CN103052851B - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN103052851B
CN103052851B CN201180037968.6A CN201180037968A CN103052851B CN 103052851 B CN103052851 B CN 103052851B CN 201180037968 A CN201180037968 A CN 201180037968A CN 103052851 B CN103052851 B CN 103052851B
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China
Prior art keywords
fan
noise
rotating speed
soundproof effect
control
Prior art date
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Active
Application number
CN201180037968.6A
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Chinese (zh)
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CN103052851A (en
Inventor
道簱聪
山田彰二
福井智哉
迫田健一
加贺邦彦
森刚
铃木仁一
高守辉
向山琢也
代田光宏
谷川喜则
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication of CN103052851A publication Critical patent/CN103052851A/en
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Publication of CN103052851B publication Critical patent/CN103052851B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0029—Axial fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Duct Arrangements (AREA)
  • Air-Flow Control Members (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

There is provided a kind of can the air conditioner of restraint speckle further.The indoor set (100) of air conditioner has: housing (1), and it is formed with suction inlet (2) on top, is formed with blow-off outlet (3) on the downside of front face; The multiple axial flow type be arranged side by side in the downstream of suction inlet (2) or oblique flow type fan (20); Heat exchanger (50), it is arranged on the downstream of fan (20) and the upstream side in blow-off outlet (3); Noise detection apparatus (161,162), it detects the noise sent from fan (20); Control loudspeaker (181,182), it exports the control sound making noise reduction; Soundproof effect detects microphone (191,192), the soundproof effect of its detection control sound; Signal processing apparatus (201,202), it detects the testing result of microphone (191,192) according to noise sensing microphones (161,162) and soundproof effect, control loudspeaker (181,182) is exported and controls sound; And control device (281), it carries out rotating speed control individually to multiple fan.

Description

Air conditioner
Technical field
The present invention relates to air conditioner, this air conditioner is accommodated with fan and heat exchanger in housing, and has the muffling unit (loudspeaker and microphone) for eliminating the noise to the sound produced by this fan.
Background technology
In the past, there is the air conditioner being accommodated with fan and heat exchanger in housing.As such air conditioner, propose following scheme (such as, with reference to patent document 1), " a kind of air conditioner; this air conditioner is by the body shell with air inlet and gas outlet; and the heat exchanger arranged in this body shell is formed, in described gas outlet, place is equipped with fan unit, and this fan unit on the width of described gas outlet, arranges multiple compact spiral paddle fan simultaneously and forms ".This air conditioner arranges fan unit at gas outlet place, easily can control the direction of air-flow, and arrange mutually isostructural fan unit at suction inlet place, improves the performance of heat exchanger thus by increasing air quantity.
Prior art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2005-3244 publication (the 0012nd, 0013,0018 ~ 0021 section, Fig. 5 and Fig. 6)
Summary of the invention
The problem that invention will solve
The such air conditioner of patent document 1 is provided with heat exchanger at the upstream side of fan unit (pressure fan).Therefore, owing to being provided with movable fan unit at air outlet side, the unstability of the air-flow that the wind path change therefore movably brought due to fan or asymmetric suction cause causes air quantity to decline or adverse current etc.And then the air of movement disorder flows into fan unit.
Therefore, there are the following problems for the air conditioner that patent document 1 is such: the movement disorder of the air that the flow velocity flowing into blade part (screw) peripheral part of fan unit accelerates, fan unit itself becomes the sound source (becoming the reason of noise penalty) of noise.
Applicant is in order to solve above-mentioned problem, to proposing international application (international application no PCT/JP2009/67265) with lower device, " a kind of indoor set of air conditioner, the indoor set of this air conditioner has: housing; it is formed with suction inlet on top, on the downside of front surface part, be formed with blow-off outlet; The pressure fan of axial flow type or oblique flow type, it is arranged on the downstream of the suction inlet in housing; And heat exchanger, it is arranged on the position of the downstream of the pressure fan in housing and the upstream side of blow-off outlet, and the air blown out from pressure fan and cold-producing medium are carried out heat exchange ".
The object of the present invention is to provide a kind of air conditioner, there is in the suitable position of the air conditioner with axial flow type or oblique flow type pressure fan (fan) muffling unit (loudspeaker and microphone), thus, can restraint speckle further.
For the means of dealing with problems
Air conditioner of the present invention has: housing, and it is formed with suction inlet on top, on the downside of front face, be formed with blow-off outlet; Multiple axial flow type that the downstream of the suction inlet in housing is arranged side by side or oblique flow type fan; Heat exchanger, it is arranged on the downstream of the fan in housing and at the upstream side of blow-off outlet, carries out heat exchange to the air blown out from fan and cold-producing medium; Noise detection apparatus, it detects the noise sent from fan; Control voice output, it exports the control sound making noise reduction; Soundproof effect checkout gear, the soundproof effect of its detection control sound; Control sound generating apparatus, it is according to the testing result of noise detection apparatus and soundproof effect checkout gear, control voice output is exported and controls sound; And control device, it carries out rotating speed control individually to multiple fan, and control device, according to soundproof effect when making control sound and the noise interference sent from fan, controls the rotating speed of multiple fan.
In addition, air conditioner of the present invention has: housing, and it is formed with suction inlet on top, on the downside of front face, be formed with blow-off outlet; Multiple axial flow type that the downstream of the suction inlet in housing is arranged side by side or oblique flow type fan; Heat exchanger, it is arranged on the downstream of the fan in housing and at the upstream side of blow-off outlet, carries out heat exchange to the air blown out from fan and cold-producing medium; Control voice output, it exports the control sound making the noise reduction sent from fan; Noise/soundproof effect checkout gear, its detection noise, and the soundproof effect of detection control sound; Control sound generating apparatus, it is according to the testing result of noise/soundproof effect checkout gear, control voice output is exported and controls sound; Control device, it carries out rotating speed control individually to multiple fan, and control device, according to soundproof effect when making described control sound and the noise interference sent from fan, controls the rotating speed of multiple fan.
In addition, air conditioner of the present invention has: housing, and it is formed with suction inlet on top, on the downside of front face, be formed with blow-off outlet; Multiple axial flow type that the downstream of the suction inlet in housing is arranged side by side or oblique flow type fan; Heat exchanger, it is arranged on the downstream of the fan in housing and at the upstream side of blow-off outlet, carries out heat exchange to the air blown out from fan and cold-producing medium; Noise detection apparatus, it detects the noise sent from fan; Control voice output, it exports the control sound making noise reduction; Soundproof effect checkout gear, the soundproof effect of its detection control sound; Control sound generating apparatus, it is according to the testing result of noise detection apparatus and soundproof effect checkout gear, control voice output is exported and controls sound; Control device, it carries out rotating speed control individually to multiple fan ground, control device carry out the rotating speed improving the fan configured at the two ends of housing rotating speed control, and be reduced in housing two ends configuration fan beyond fan rotating speed rotating speed control at least one party rotating speed control.
In addition, air conditioner of the present invention has: housing, and it is formed with suction inlet on top, on the downside of front face, be formed with blow-off outlet; Multiple axial flow type that the downstream of the suction inlet in housing is arranged side by side or oblique flow type fan; Heat exchanger, it is arranged on the downstream of the fan in housing and at the upstream side of blow-off outlet, carries out heat exchange to the air blown out from fan and cold-producing medium; Control voice output, it exports the control sound making the noise reduction sent from fan; Noise/soundproof effect checkout gear, its detection noise, and the soundproof effect of detection control sound; Control sound generating apparatus, it is according to the testing result of noise/soundproof effect checkout gear, control voice output is exported and controls sound; Control device, it carries out rotating speed control individually to multiple fan, control device carry out the rotating speed improving the fan configured at the two ends of housing rotating speed control, and be reduced in housing two ends configuration fan beyond fan rotating speed rotating speed control at least one party rotating speed control.
Invention effect
Air conditioner of the present invention has " have noise detection apparatus, control voice output, soundproof effect checkout gear and control the noise elimination mechanism of sound generating apparatus ", or, " there is the noise elimination mechanism controlling voice output, noise/soundproof effect checkout gear and control sound generating apparatus ".In addition, the air conditioner of the present invention control device that there is multiple Air Blast fan and the rotating speed of these Air Blast fans is controlled separately.Therefore, control according to the rotating speed of soundproof effect to each Air Blast fan, thereby, it is possible to reduce the noise of air conditioner.
Accompanying drawing explanation
Fig. 1 is the profilograph of the indoor set of the air conditioner that embodiments of the present invention 1 are shown.
Fig. 2 is the stereoscopic figure of the indoor set of the air conditioner that embodiments of the present invention 1 are shown.
Fig. 3 is that right side of face observes the stereogram of the indoor set of embodiments of the present invention 1 in the past.
Fig. 4 is the stereogram of the indoor set observing embodiments of the present invention 1 on the right side of the back side.
Fig. 5 is the stereogram of the indoor set observing embodiments of the present invention 1 from front, left side.
Fig. 6 is the stereogram of the solidifying water pond that embodiments of the present invention 1 are shown.
Fig. 7 is the profilograph of the condensation generation position of the indoor set that embodiments of the present invention 1 are shown.
Fig. 8 is the structure chart of the signal processing apparatus that embodiments of the present invention 1 are shown.
Fig. 9 is the profilograph of another example of the indoor set of the air conditioner that embodiments of the present invention 1 are shown.
Figure 10 is the profilograph of the indoor set that embodiments of the present invention 2 are shown.
Figure 11 is the structure chart of the signal processing apparatus that embodiments of the present invention 2 are shown.
Figure 12 is the oscillogram for illustration of the method calculated the noise for cancellation from the sound after interference.
Figure 13 is the block diagram of the method for illustration of the control sound estimating embodiments of the present invention 2.
Figure 14 is the profilograph of another example of the indoor set that embodiments of the present invention 2 are shown.
Figure 15 is the profilograph of the indoor set that embodiments of the present invention 3 are shown.
The performance plot of the coherence between two microphones that the setting position that Figure 16 shows noise sensing microphones and soundproof effect detection microphone causes.
Figure 17 is the profilograph of the indoor set that embodiments of the present invention 4 are shown.
Figure 18 is the profilograph of the indoor set that embodiments of the present invention 5 are shown.
Figure 19 is the upward view (figure from the downside of Figure 18 is observed) of the fan that embodiments of the present invention 5 are shown.
Figure 20 is the M-M sectional view of Figure 19.
Figure 21 is the structure chart of the signal processing apparatus that embodiments of the present invention 5 are shown.
Figure 22 is the visualizing air currents and the figure of the experimental result obtained that are blown out by the fan from embodiments of the present invention 5.
Figure 23 is the structure chart of the circuit of the weighted units that embodiments of the present invention 5 are shown.
Figure 24 be in outside noise sensing microphones 161 being arranged on cylindrical region S and when fan 20 is worked, the detection sound of noise sensing microphones 161 and soundproof effect detect the coherence of the detection sound of microphone 191.
Figure 25 be in the inner side being arranged on cylindrical region S and when fan 20 is worked, the detection sound of noise sensing microphones 161 and soundproof effect detect the coherence of the detection sound of microphone 191.
Figure 26 is the profilograph of another example of the indoor set that embodiments of the present invention 5 are shown.
Figure 27 is the profilograph of an example again of the indoor set that embodiments of the present invention 5 are shown.
Figure 28 is the sectional view of another installation example of the noise sensing microphones illustrated in embodiments of the present invention 5.
Figure 29 is the profilograph of the indoor set that embodiments of the present invention 6 are shown.
Figure 30 is the profilograph of another example of the indoor set that embodiments of the present invention 6 are shown.
Figure 31 is the profilograph of an example again of the indoor set that embodiments of the present invention 6 are shown.
Figure 32 is the sectional view of another installation example of the noise sensing microphones illustrated in present embodiment 6.
Figure 33 is the profilograph of the indoor set that embodiments of the present invention 7 are shown.
Figure 34 is the structure chart of the signal processing apparatus that embodiments of the present invention 7 are shown.
Figure 35 is the front view of the indoor set that embodiments of the present invention 8 are shown.
Figure 36 is the side view of the indoor set that embodiments of the present invention 8 are shown.
Figure 37 is the structure chart of the control device that embodiments of the present invention 8 are shown.
Figure 38 is the front view of another example of the indoor set that embodiments of the present invention 8 are shown.
Figure 39 is the left side view of the indoor set shown in Figure 38.
Figure 40 is the front view of the indoor set of embodiments of the present invention 9.
Figure 41 is the structure chart of the control device that embodiments of the present invention 9 are shown.
Figure 42 is the front view of another example of the indoor set that embodiments of the present invention 9 are shown.
Figure 43 is the left side view of the indoor set shown in Figure 42.
Figure 44 is the front view of an example again of the indoor set that embodiments of the present invention 9 are shown.
Figure 45 is the front view of the indoor set that embodiments of the present invention 10 are shown.
Figure 46 is the structure chart of the control device that embodiments of the present invention 10 are shown.
Figure 47 is the front view of the indoor set that embodiments of the present invention 11 are shown.
Figure 48 is the front view of another example of the indoor set that embodiments of the present invention 11 are shown.
Figure 49 is the left side view of the indoor set shown in Figure 48.
Figure 50 is the front view of the indoor set that embodiments of the present invention 12 are shown.
Figure 51 is the front view of another example of the indoor set that embodiments of the present invention 12 are shown.
Figure 52 is the left side view of the indoor set shown in Figure 51.
Figure 53 is the front view of an example again of the indoor set that embodiments of the present invention 12 are shown.
Figure 54 is the front view of the indoor set that embodiments of the present invention 15 are shown.
Figure 55 is the structure chart of the control device that embodiments of the present invention 15 are shown.
Figure 56 is the structure chart of the sound deadening capacity computing unit that embodiments of the present invention 15 are shown.
Figure 57 is the front view of the indoor set that embodiments of the present invention 16 are shown.
Detailed description of the invention
Below, the detailed description of the invention of air conditioner of the present invention (being more particularly the indoor set of air conditioner) is described.In addition, in embodiment 1, the basic structure of each unit of the indoor set of formation air conditioner is described.In addition, after embodiment 2, the detailed construction of each unit or other embodiment are described.In addition, in following embodiment, for wall indoor unit, the present invention will be described.In addition, in the figure shown in each embodiment, also there is the situation that the part such as shape or size of each unit (or structure member of each unit) is different.
Embodiment 1.
< basic structure >
Fig. 1 is the profilograph of the indoor set (being called indoor set 100) of the air conditioner that embodiments of the present invention 1 are shown.In addition, Fig. 2 is the stereoscopic figure that this indoor set is shown.In addition, in present embodiment 1 and embodiment described later, the front face side of the left side of Fig. 1 as indoor set 100 is described.Below, according to Fig. 1 and Fig. 2, the structure of indoor set 100 is described.
(overall structure)
This indoor set 100, by utilizing the kind of refrigeration cycle making refrigerant circulation, provides the air through air conditioning to air-conditioning subject area such as indoor.Indoor set 100 mainly has: housing 1, and it is formed with the suction inlet 2 for being absorbed by room air and is used for the air through air conditioning to be provided to the blow-off outlet 3 of air-conditioning subject area; Fan 20, it is accommodated in this housing 1, sucks room air from suction inlet 2, blows out the air through air conditioning from blow-off outlet 3; And heat exchanger 50, it is arranged on from fan 20 to the wind path of blow-off outlet 3, carries out heat exchange, generate the air through air conditioning thus between cold-producing medium and room air.And, in housing 1, be communicated with wind path (arrow Z) by these structural elements.Suction inlet 2 is formed at the upper opening of housing 1.Blow-off outlet 3 is formed at the bottom front face of housing 1 (more particularly, the on the downside of) opening of housing 1.Fan 20 is configured in the downstream of suction inlet 2 and at the upstream side of heat exchanger 50, such as, is made up of aerofoil fan or diagonal flow fan etc.
In addition, indoor set 100 also has control device 281, control device 281 control the rotating speed of fan 20 and upper bottom wing described later (vane) 70 and left and right towards (angle) etc.In addition, in the accompanying drawing shown in present embodiment 1 and each embodiment described later, sometimes omit the diagram of control device 281.
In the indoor set 100 formed like this, because fan 20 is arranged on the upstream side of heat exchanger 50, therefore, compared with the indoor set being located at the air conditioner in the past of blow-off outlet 3 with fan 20, the air-swirl that occurs to blow out from blow-off outlet 3 can be suppressed and/or produce wind speed profile uneven.Therefore, comfortable wind can be carried to air-conditioning subject area.In addition, there is no the structure member that fan etc. is complicated at blow-off outlet 3 place, therefore when cooling operation, easily can process the condensation produced with the border of cold air at heating installation.In addition, fan motor 30 is not exposed in the air of air conditioning and cold air or heating installation, therefore, it is possible to provide long running life.
(fan)
Usually, because the installation space of the indoor set to air conditioner restricts to some extent, therefore mostly fan cannot be increased.Therefore, in order to obtain desired air quantity, and the fan of the multiple suitable size of row arrangement.As shown in Figure 2, the indoor set 100 of present embodiment 1 is configured with 3 fans 20 side by side along the length direction (in other words, the length direction of blow-off outlet 3) of housing 1.When the size of current common indoor machine of air conditioner, in order to obtain desired heat-exchange capacity, about 2 ~ 4 fans 20 of preferred disposition.In the indoor set of present embodiment 1, fan 20 is all configured to identical shape, all operates with equal action rotating speed, thereby, it is possible to obtain almost equal air output in whole fan 20.
By such structure, according to the flowing resistance of necessary air quantity and/or indoor set 100 inside, the number of combination fan 20, shape and size etc., thus, can realize the optimum fan design corresponding with all size indoor set 100.
(horn mouth (bellmouth))
In the indoor set 100 of present embodiment 1, around fan 20, be configured with the horn mouth 5 on pipeline.Horn mouth 5 is for guiding the air-breathing to fan and the exhaust from fan smoothly.As shown in Figure 1, the horn mouth 5 of present embodiment 1 is circular when overlooking.In addition, in longitudinal section, the horn mouth 5 of present embodiment 1 is shape as following.Top 5a is formed as its end and expands upward and be roughly circular shape.Central portion 5b is the straight section that bell-mouthed diameter is fixed.Bottom 5c is the roughly circular shape that its end is expanded downward.And, form suction inlet 2 in the end (circular arc portion of suction side) of the top 5a of horn mouth 5.
Horn mouth 5 shown in Fig. 1 of present embodiment 1 is configured to the high pipe shape of the impeller of aspect ratio fan 20, but is not limited thereto, and also can be the height that the is configured to horn mouth 5 semi-open type horn mouth lower than the height of the impeller of fan 20.In addition, horn mouth 5 also can be only made up of 5a, 5c of end, and does not have the straight section of the 5b shown in Fig. 1.
In addition, in order to cut down parts count and improve intensity, horn mouth 5 such as can form with housing 1.In addition, such as, can be, by modularizations such as horn mouth 5, fan 20 and fan motors 30, be set to the structure they can loaded and unloaded on housing 1, improve maintainable.
In addition, in present embodiment 1, the end (circular arc portion of suction side) of the top 5a of horn mouth 5, relative to the circumference of the opening surface of horn mouth 5, is formed with uniform shapes.That is, relative to the direction of rotation centered by the rotating shaft 20a of fan 20, horn mouth 5 does not have the structure such as otch or flange, is the uniform shape with axial symmetry.
By forming horn mouth 5 like this, the end (circular arc portion of suction side) of the top 5a of horn mouth 5 rotates to be uniform shape relative to fan 20, and the suction air-flow therefore as fan 20 also can realize uniform air-flow.Therefore, it is possible to reduce the noise produced because of the bias current of the suction air-flow of fan 20.
(about dividing plate)
As shown in Figure 2, the indoor set 100 of present embodiment 1 is provided with dividing plate 90 between adjacent fan 20.These dividing plates 90 are arranged between heat exchanger 50 and fan 20.That is, the wind path between heat exchanger 50 and fan 20 is split into multiple wind path (being 3 in present embodiment 1).Because dividing plate 90 is arranged between heat exchanger 50 and fan 20, the end of the side therefore connected with heat exchanger 50 becomes the shape along heat exchanger 50.More particularly, as shown in Figure 1, (that is, the longitudinal section of indoor set 100 is observed from right side in the front face side of machine 100 indoor to the longitudinal section of rear side.Hereinafter referred to as longitudinal section, right side) in, heat exchanger 50 is configured to roughly Λ type.Therefore, heat exchanger 50 side end of dividing plate 90 also becomes roughly Λ type.
In addition, the position of fan 20 side end determining dividing plate 90 with the following method can such as be adopted.When the fan 20 making to adjoin fully separates the degree do not had an impact each other in suction side, the end of fan 20 side of dividing plate 90 arrives the exit face of fan 20.But, at adjacent fan 20 in suction side close to the degree impacted one another and when the shape of the end of the top 5a of horn mouth 5 (circular arc portion of suction side) can be made further to be formed as enough large, can by the end of fan 20 side of dividing plate 90, the extended upstream side (suction side) to fan 20, to make not have an impact (can not affect each other in suction side to make the fan 20 adjoined) to adjacent wind path.
In addition, dividing plate 90 can be formed by various material.Such as, the metal such as steel or aluminium can be used to form dividing plate 90.In addition, resin etc. such as also can be used to form dividing plate 90.But, because when heating running, heat exchanger 50 becomes high temperature, therefore when dividing plate 90 be formed by the material of the low melting points such as resin, between dividing plate 90 and heat exchanger 50, form space a little.When dividing plate 90 is the high materials of the melting point such as aluminium or steel, dividing plate 90 can be configured to and contacts with heat exchanger 50.When heat exchanger 50 is such as fin tube type heat exchangers, dividing plate 90 can be inserted between the fin of heat exchanger 50.
As mentioned above, the wind path between heat exchanger 50 and fan 20 is divided into multiple wind path (being 3 in present embodiment 1).In this wind path, namely sound-absorbing material is set in dividing plate 90 or housing 1 etc., the noise produced in pipeline can also be reduced in.
In addition, when the wind path after these segmentations is formed as overlooking, the length of side is the roughly quadrilateral shape of L1 and L2.That is, the amplitude of the wind path after segmentation is L1 and L2.Therefore, the air quantity that the fan 20 being arranged on the roughly quadrilateral shape inside such as formed by L1, L2 produces, reliably passes through by the heat exchanger 50 in the region surrounded by L1, L2 being positioned at fan 20 downstream.
Like this, wind path in housing 1 is divided into multiple wind path, thus, even if (flow field) has swirl component in the flow field that fan 20 is formed in downstream, the air blown out from each fan 20 freely can not move on the length direction of indoor set 100 (direction vertical with paper Fig. 1).Therefore, the air that fan 20 can be made to blow out is by being arranged in the heat exchanger 50 in the region surrounded by L1, L2 in this fan 20 downstream.Consequently, the deviation of the air volume adjustment on the length direction at indoor set 100 (direction vertical with paper in Fig. 1) of inflow heat exchanger 50 entirety can be controlled, higher heat exchange performance can be had.In addition, do to cut off in housing 1 with dividing plate 90, thus, between fan 20 adjacent to each other, the interference of the eddy current produced with adjacent fan 20 can be prevented.Therefore, it is possible to interfere the energy loss of the fluid caused between suppression eddy current, in conjunction with the improvement of wind speed profile, the pressure loss of indoor set 100 can be reduced.In addition, each dividing plate 90 is not must be formed by a plate, can be formed by multiple plate yet.Such as, according to front face side heat exchanger 51 side and rear side heat exchanger 55 side, dividing plate 90 can be divided into two parts.Certainly the joint between preferred each plate forming dividing plate 90 is very close to each other.By being divided into multiple by dividing plate 90, the assembleability of dividing plate 90 can be improved.
(fan motor)
Fan 20 is driven by fan motor 30 and rotates.The fan motor 30 used can be inner-rotor type, can also to be outer-rotor type.When fan motor 30 of outer-rotor type, the fan motor of the structure (making wheel hub 21 have rotor) that rotor is integrated with the wheel hub 21 one-tenth of fan 20.In addition, the size of fan motor 30 is made to be less than the size of the wheel hub 21 of fan 20, thereby, it is possible to prevent the air-flow to fan 20 produces from bringing loss.In addition, by arranging motor in the inside of wheel hub 21, axial dimension can also be reduced.Make fan motor 30 and fan 20 become the structure of easily handling, can maintainability be improved thus.
In addition, the higher DC brushless motor of use cost as fan motor 30, can the raising of implementation efficiency, long lifetime and controlling raising, but, adopt other forms of motor certainly also can meet major function as air conditioner.In addition, fan motor 30 driving circuit can with fan motor 30 one, also can form in outside, and implement dust-proof, fire Countermeasure.
Fan motor 30 is installed within the case 1 by support of motor 16.In addition, if fan motor 30 to be set to box (by the modularization integratedly such as fan 20, basket, fan motor 30, horn mouth 5 and support of motor 16) for CPU cooling etc., become the structure that can load and unload at housing 1, then can improve maintainability, and the precision in gap (tip clearance) between the leaf improving fan 20.Usually, between preferred leaf, gap is narrow, and such wind pushing performance is high.
In addition, the drive circuit of fan motor 30 at fan motor 30 Inner Constitution, also can be formed in outside.
(support of motor)
Support of motor 16 has fixed part 17 and support component 18.Fixed part 17 is for provided with fan motor 30.Support component 18 is the parts for being fixed to housing 1 by fixed part 17.Support component 18 is such as bar-shaped, is configured to from the peripheral part of fixed part 17 such as with radiated entends.As shown in Figure 1, the support component 18 of present embodiment 1 is configured to extend roughly in the horizontal direction.In addition, support component 18 also can provide static wing effect (stator vane effect) as wing or tabular.
(heat exchanger)
The heat exchanger 50 of the indoor set 100 of present embodiment 1 is configured in the lower wind direction side of fan 20.This heat exchanger 50 such as can use fin tube type heat exchanger etc.As shown in Figure 1, heat exchanger 50 is separated by line of symmetry 50a in longitudinal section, right side.The scope that arranges of the heat exchanger 50 in this cross section is split in substantially central portion by line of symmetry 50a in the lateral direction.That is, front face side heat exchanger 51 is configured in front face side (on the left of the paper of Fig. 1) relative to line of symmetry 50a, and rear side heat exchanger 55 is configured in rear side (on the right side of the paper of Fig. 1) relative to line of symmetry 50a.And, in the mode that the interval between front face side heat exchanger 51 and rear side heat exchanger 55 expands relative to the flow direction of air, namely become the mode of roughly Λ type with the cross sectional shape of heat exchanger 50 in longitudinal section, right side, front face side heat exchanger 51 and rear side heat exchanger 55 are configured in housing 1.That is, front face side heat exchanger 51 and rear side heat exchanger 55 are configured to have gradient relative to the flow direction of the air provided from fan 20.
In addition, the feature of heat exchanger 50 is, the wind path area of rear side heat exchanger 55 is greater than the wind path area of front face side heat exchanger 51.That is, the air quantity of the rear side heat exchanger 55 of heat exchanger 50 is greater than the air quantity of front face side heat exchanger 51.In present embodiment 1, in longitudinal section, right side, the length of the length direction of rear side heat exchanger 55 is longer than the length direction length of front face side heat exchanger 51.Thus, the wind path area of rear side heat exchanger 55 is greater than the wind path area of front face side heat exchanger 51.In addition, other structures (length etc. in the depth direction in Fig. 1) of front face side heat exchanger 51 and rear side heat exchanger 55 are equal.That is, the heat transfer area of rear side heat exchanger 55 is greater than the heat transfer area of front face side heat exchanger 51.In addition, the rotating shaft 20a of fan 20 is arranged on the top of line of symmetry 50a.
By forming heat exchanger 50 like this, with arrange at blow-off outlet fan air conditioner in the past indoor set compared with, can suppress from blow-off outlet 3 blow out the generation of air-swirl and the generation of wind speed profile inequality.In addition, by forming heat exchanger 50 like this, the air quantity of rear side heat exchanger 55 can be made to be greater than the air quantity of front face side heat exchanger 51.And, because this air quantity is poor, when the air respectively by front face side heat exchanger 51 and rear side heat exchanger 55 converges, this converge after air diverts front face side (blow-off outlet 3 side).Therefore, need not near blow-off outlet 3, air-flow be turned to sharp, the pressure loss near blow-off outlet 3 can be reduced in.
In addition, in the indoor set 100 of present embodiment 1, the flow direction of air flowed out from rear side heat exchanger 55 becomes the flowing from rear side forwardly side.Therefore, the indoor set 100 of present embodiment 1 with when in longitudinal section, right side, heat exchanger 50 is configured to roughly V-shaped compared with, the flow divert making the air that have passed heat exchanger 50 can be easier to.
Indoor set 100 has multiple fan 20, and therefore weight easily becomes heavy.If indoor set 100 becomes heavy, then needing the wall for installing indoor set 100 to have necessary intensity, restricting to some extent installing.Therefore, the lightweight of heat exchanger 50 is preferably realized.In addition, indoor set 100 is at the upstream side configuration fan 20 of heat exchanger 50, and therefore the height dimension of indoor set 100 increases, and easily produces the restriction of installing.Therefore, heat exchanger 50 lightweight is preferably made.In addition, also preferably make heat exchanger 50 miniaturized.
Therefore, in present embodiment 1, use fin tube type heat exchanger as heat exchanger 50(front face side heat exchanger 51 and rear side heat exchanger 55), realize the miniaturization of heat exchanger 50.More particularly, the heat exchanger 50 of present embodiment 1 has across the stacked multiple fins 56 in predetermined gap, and multiple heat-transfer pipes 57 of these fins 56 through.In present embodiment 1, at the upper stacked fin 56 of the left and right directions (direction vertical with paper of Fig. 1) of housing 1.That is, heat-transfer pipe 57 is along left and right directions (direction vertical with paper of Fig. 1) the through fin 56 of housing 1.In addition, in present embodiment 1, in order to improve the heat exchanger effectiveness of heat exchanger 50, at the upper configuration two biographies heat pipe 57 of the direction of ventilation (width of fin 56) of heat exchanger 50.These heat-transfer pipes 57 are configured to be roughly staggered shape in longitudinal section, right side.
In addition, heat-transfer pipe 57 is formed with (diameter about 3mm ~ 7mm) pipe of thinner diameter, with the cold-producing medium (at indoor set 100 and there is the cold-producing medium that in the air conditioner of this indoor set 100 use) of R32 as flowing in heat-transfer pipe 57, thus, the miniaturization of heat exchanger 50 can be realized.That is, heat exchanger 50 carries out heat exchange by fin 56 to the cold-producing medium of the internal flow at heat-transfer pipe 57 and room air.Therefore, when adopting thinner heat-transfer pipe 57, compared with the heat exchanger that heat transfer caliber is thicker, for same circulating mass of refrigerant, the pressure loss of cold-producing medium increases.But R32 and R410A compares, evaporation latent heat is large at the same temperature, can play identical ability with less circulating mass of refrigerant.Therefore, by using R32, used refrigerant amount can be cut down, the pressure loss can be reduced in heat exchanger 50.Therefore, by forming heat-transfer pipe 57 with thinner pipe, and using R32 as cold-producing medium, heat exchanger 50 can be made miniaturized.
In addition, in the heat exchanger 50 of present embodiment 1, form fin 56 and heat-transfer pipe 57 with aluminum or aluminum alloy, the lightweight of heat exchanger 50 can be realized thus.In addition, when the weight of heat exchanger 50 can not restrict installation, heat-transfer pipe 57 can certainly be formed with copper.
(finger guard device and filter)
In addition, the indoor set 100 of present embodiment 1 is provided with finger guard device 15 and filter 10 at suction inlet 2.The object arranging finger guard device 15 is to make hand can not touch the fan 20 of rotation.Therefore, as long as make hand can not touch fan 20, the shape of finger guard device 15 can be arbitrary shape.Such as, the shape of finger guard device 15 can be clathrate, also can be the circle be made up of multiple ring varied in size.In addition, finger guard device 15 can form with materials such as resins and also can form with metal material, but, when desired strength, it is desirable to form with metal.In addition, from reducing flowing resistance and keeping the viewpoint of intensity, finger guard device 15 preferably thin, that intensity is large material or shape as far as possible.It is inner to prevent dust from flowing into indoor set 100 to arrange filter 10.Filter 10 is detachably arranged within the case 1.In addition, although not shown, the indoor set 100 of present embodiment 1 also can have automatically to the automatic clearing mechanism that filter 10 is swept.
(the wind direction control wing)
In addition, the indoor set 100 of present embodiment 1 is provided with at blow-off outlet 3 mechanism of blow-off direction controlling air-flow and namely goes up bottom wing 70 and left and right (not shown).
(solidifying water pond)
Fig. 3 is that right side of face observes the stereogram of the indoor set of embodiments of the present invention 1 in the past.Fig. 4 is the stereogram observing this indoor set on the right side of the back side.Fig. 5 is the stereogram observing this indoor set from front, left side.In addition, Fig. 6 is the stereogram of the solidifying water pond that embodiments of the present invention 1 are shown.In addition, for the ease of understanding the shape of solidifying water pond, in figs. 3 and 4, the right side of indoor set 100 is shown with section, the left side of indoor set 100 is shown with section in Figure 5.
The below of the bottom (the front face side end of front face side heat exchanger 51) of front face side heat exchanger 51 is provided with front face side and coagulates water pond 110.The below of the bottom (the rear side end of rear side heat exchanger 55) of side heat exchanger 55 is provided with rear side and coagulates water pond 115 overleaf.In addition, in present embodiment 1, rear side is coagulated water pond 115 and is formed with the back part 1b of housing 1.Coagulating in water pond 115 in this rear side, in left end, the both sides of right-hand end being provided with the connector 116 for being connected drainpipe 117.In addition, need not connect drainpipe 117 to the both sides of connector 116, the connector 116 of a side connects drainpipe 117 wherein.Such as, when carrying out the installation exercise of indoor set 100, when drainpipe 117 will be drawn to the right side of indoor set 100, the connector 116 arranged to the right-hand end that water pond 115 is coagulated in side overleaf connects drainpipe 117, is arranged on blockings such as rubber caps the connector 116 that rear side coagulates the left end of water pond 115.
Front face side is coagulated water pond 110 and is configured in and coagulates the high position of water pond 115 than rear side.In addition, coagulate water pond 110 and rear side is coagulated between water pond 115 in front face side, be provided as the drainage path 111 of the mobile route of draining the both sides of left end and right-hand end.Drainage path 111 is configured to, and end and the front face side of front face side are coagulated water pond 110 and be connected, and coagulates water pond 110 from front face side and coagulate water pond 115 towards rear side and tilt downwards.In addition, tongue 111a is formed with in the end of the rear side of drainage path 111.The end of the rear side of drainage path 111 is configured to cover the upper surface that rear side coagulates water pond 115.
When cooling operation, room air is cooled in heat exchanger 50, condense in heat exchanger 50.Then, the dew be attached on front face side heat exchanger 51 drips from the bottom of front face side heat exchanger 51, is coagulated water pond 110 reclaim by front face side.The dew be attached on rear side heat exchanger 55 drips from the bottom of rear side heat exchanger 55, is recovered in rear side and coagulates in water pond 115.
In addition, in present embodiment 1, front face side is coagulated water pond 110 and be arranged on and coagulate the high position of water pond 115 than rear side, therefore coagulate the draining be recovered in water pond 110 in front face side and coagulate water pond 115 1 side towards rear side and flow on drainage path 111.Then, this draining rearwardly from the tongue 111a of drainage path 111 is coagulated water pond 115 and is dripped in side, is recovered in rear side and coagulates in water pond 115.Be recovered in rear side and coagulate draining in water pond 115 by drainpipe 117 to housing 1(indoor set 100) outside discharge.
As present embodiment 1, front face side is coagulated water pond 110 and be arranged on and coagulate the high position of water pond 115 than rear side, thereby, it is possible to the draining of reclaiming in two solidifying water ponds is gathered rear side to coagulate the solidifying water pond that water pond 115(is configured in the most rear side of housing 1).Therefore, coagulate by side overleaf the connector 116 water pond 115 being arranged drainpipe 117, water pond 110 and rear side can be coagulated coagulate being recovered in front face side the draining in water pond 115 and discharge to the outside of housing 1.Therefore, the situation of carrying out the maintenance (cleaning etc. of heat exchanger 50) of indoor set 100 at the front face etc. opening housing 1 is inferior, need not load and unload the solidifying water pond etc. being connected with drainpipe 117, improves the workability of maintenance etc.
In addition, owing to arranging drainage path 111 the both sides of left end and right-hand end, even if therefore arrange indoor set 100 in an inclined state, also can reliably coagulate draining in water pond 110 by being recovered in front face side rearwardly coagulating water pond 115 and derive in side.In addition, owing to arranging with the both sides of right-hand end the connector being connected drainpipe 117 in left end, therefore, it is possible to select the lead direction of pipe according to the mounting condition of indoor set 100, improve workability when indoor set 100 is set.In addition, the top of water pond 115 is coagulated (namely owing to drainage path 111 to be configured to cover rear side, bindiny mechanism is not needed owing to coagulating between water pond 115 at drainage path 111 and rear side), therefore easily can load and unload front face side and coagulate water pond 110, further increase maintainability.
In addition, also drainage path 111 can be configured to, the end of the rear side of drainage path 111 and rear side be coagulated water pond 115 and is connected, front face side coagulates the top that water pond 110 covers drainage path 111.In such a configuration, also can obtain and be configured to drainage path 111 and cover rear side and coagulate the same effect of the structure of the top of water pond 115.In addition, it is not must coagulate water pond 115 height than rear side that front face side coagulates water pond 110, even if front face side coagulates water pond 110, to coagulate water pond 115 with rear side are identical height, also the draining being recovered in two solidifying water ponds can be discharged from coagulating with rear side the drainpipe that water pond 115 is connected.
(nozzle)
In addition, the indoor set 100 of present embodiment 1 is configured to, in longitudinal section, right side, the Opening length d1(of the entrance side of nozzle 6 coagulates water pond 110 and rear side in front face side and coagulates constriction length d1 between the solidifying water pond that defines between water pond 115 part) be greater than the length of the Opening length d2(blow-off outlet 3 of the outlet side of nozzle 6).That is, the nozzle 6 of indoor set 100 becomes the shape (with reference to Fig. 1) of d1 > d2.
The shape that nozzle 6 becomes d1 > d2 is due to following reason.In addition, can affect the attainability of the air-flow of one of the basic function as indoor set due to d2, therefore, being set to by the d2 of the indoor set 100 of present embodiment 1 is below that length with the blow-off outlet same degree of indoor set is in the past described.
By the shape of the nozzle 6 in longitudinal section is set to d1 > d2, the wind path of air can be increased, further, the angle A (the front face side heat exchanger 51 in the downstream of heat exchanger 50 and rear side heat exchanger 55 angulation) of the heat exchanger 50 in upstream side configuration can be increased.Therefore, it is possible to make the wind speed profile produced in heat exchanger 50 relax, and increase the wind path of the air in the downstream of heat exchanger 50, therefore can reduce the pressure loss of indoor set 100 entirety.In addition, the uneven homogenising of the wind speed profile produced near the entrance of nozzle 6 can be made by the effect of contracted flow, and guide to blow-off outlet 3.
Such as when d1=d2, the wind speed profile that the inequality (such as, being partial to the flowing of rear side) of the wind speed profile produced near the entrance of nozzle 6 directly becomes at blow-off outlet 3 place is uneven.That is, when d1=d2, from blow-off outlet 3 to have the state blow out air of wind speed profile inequality.In addition, such as, when d1 < d2, when the air by front face side heat exchanger 51 and rear side heat exchanger 55 converges near the entrance of nozzle 6, contracted flow loss increases.Therefore, when d1 < d2, if the diffusion effect of blow-off outlet 3 cannot be obtained, then there is the loss of contracted flow loss (flow contraction loss) part.
（ANC）
In addition, as shown in Figure 1, the indoor set 100 of present embodiment 1 is provided with active noise elimination mechanism.
More particularly, the noise elimination mechanism of the indoor set 100 of present embodiment 1 is made up of noise sensing microphones 161, control loudspeaker 181, soundproof effect detection microphone 191 and signal processing apparatus 201.Noise sensing microphones 161 detects the noise detection apparatus comprising the operating sound (noise) of the indoor set 100 of the air-supply sound of fan 20.This noise sensing microphones 161 is configured between fan 20 and heat exchanger 50.In present embodiment 1, be arranged on the front face in housing 1.Control loudspeaker 181 is the control voice outputs for exporting the control sound for noise.This control loudspeaker 181 is configured in the downside of noise sensing microphones 161, and is configured in the upside of heat exchanger 50.In present embodiment 1, the front face in housing 1 is to arrange towards the mode of wind path central authorities.Soundproof effect detects the soundproof effect checkout gear that microphone 191 is the soundproof effects for detection control sound.This soundproof effect detects microphone 191 and is arranged near blow-off outlet 3, to detect the noise spread out of from blow-off outlet 3.In addition, soundproof effect detects microphone 191 and is installed in the position avoided wind path and flow to, with from blow-off outlet 3 blow out air out not conflict mutually.Signal processing apparatus 201 is the testing results detecting microphone 191 according to noise sensing microphones 161 and soundproof effect, makes control loudspeaker 181 export the control sound generating apparatus controlling sound.Signal processing apparatus 201 is incorporated in such as control device 281.
Fig. 8 is the structure chart of the signal processing apparatus that embodiments of the present invention 1 are shown.The signal of telecommunication detecting microphone 191 input from noise sensing microphones 161 and soundproof effect is amplified by microphone amplifier 151, and is converted to data signal by A/D converter 152 from analog signal.Data signal after conversion is imported into FIR filter 158 and LMS algorithm device 159.Control signal is generated in FIR filter 158, this control signal is applied with the noise that makes to be detected by noise sensing microphones 161 and arrives the noise arranged when soundproof effect detects the place of microphone 191 and become same-amplitude and the correction of opposite phase, and, after being converted to analog signal by D/A converter 154 from data signal, amplified by amplifier 155, from control loudspeaker 181 as control voice output.
As shown in Figure 7, when air conditioner carries out cooling operation etc., due to cold air, temperature declines the region B between heat exchanger 50 and blow-off outlet 3, and therefore the steam occurred in air becomes water droplet and occurs the phenomenon of condensation.Therefore, in indoor set 100, be provided with (not shown) such as water butts near blow-off outlet 3, do not flow out from blow-off outlet 3 to make water droplet.In addition, be namely configured with the region of noise sensing microphones 161 and control loudspeaker 181 in the upstream of heat exchanger 50, be positioned at the upstream in the region cooled by cold air, therefore do not produce condensation.
Then, the suppressing method of the operating sound of indoor set 100 is described.By being arranged on the noise sensing microphones 161 between fan 20 and heat exchanger 50, detect the operating sound (noise) comprising the air-supply sound of fan 20 in indoor set 100, and be converted into data signal via microphone amplifier 151, A/D converter 152, be input to FIR filter 158 and LMS algorithm device 159.
The tap coefficient of FIR filter 158 is successively upgraded by LMS algorithm device 159.In LMS algorithm device 159, according to formula 1(h(n+1)=h(n)+2 μ e(n) x(n)) upgrade tap coefficient, upgrade best tap coefficient, make error signal e close to zero.
Wherein, h represents the tap coefficient of wave filter, and e represents error signal, and x represents filter input signal, and μ represents step size parameter, and step size parameter μ is for controlling the filter factor renewal amount of each sampling.
Like this, analog signal is converted into being have updated the data signal passed through in the FIR filter 158 of tap coefficient by LMS algorithm device 159 in D/A converter 154, and exaggerated device 155 amplifies, and output to the wind path in indoor set 100 from the control loudspeaker 181 be arranged between fan 20 and heat exchanger 50 as control sound.
On the other hand, in the lower end of indoor set 100, detect microphone 191 with the soundproof effect be not arranged on the lateral wall direction of blow-off outlet 3 with the afoul mode of wind of releasing from blow-off outlet 3, detect the control sound that makes to export from control loudspeaker 181 and to be propagated by wind path from fan 20 and sound after the noise interference sent from blow-off outlet 3.Owing to being detected in the error signal of the above-mentioned LMS algorithm device 159 of Speech input that microphone 191 detects by soundproof effect, therefore, the tap coefficient of FIR filter 158 is updated, and makes the Sound close after this interference in zero.Consequently, the control sound that have passed FIR filter 158 can be utilized to suppress the noise near blow-off outlet 3.
Like this, in the indoor set 100 applying active sound reduction method, noise sensing microphones 161 and control loudspeaker 181 are configured between fan 20 and heat exchanger 50, soundproof effect are detected microphone 191 and be arranged on and do not flow to afoul place with the wind path from blow-off outlet 3.Therefore, the necessary parts of active noise elimination is not installed in the region B that condensation occurs, detect on microphone 191 therefore, it is possible to prevent water droplet to be attached to control loudspeaker 181, noise sensing microphones 161 and soundproof effect, the fault of the decline of acoustic attenuation performance or loudspeaker, microphone can be prevented.
In addition, the installation site that the noise sensing microphones 161 shown in present embodiment 1, control loudspeaker 181 and soundproof effect detect microphone 191 is an example.Such as, as shown in Figure 9, also with noise sensing microphones 161 together with control loudspeaker 181, soundproof effect can be detected microphone 191 and is configured between fan 20 and heat exchanger 50.In addition, enumerated and microphone has been eliminated the example of the detecting unit that the soundproof effect after noise detects as to noise or by controlling sound, but, also can be made up of the acceleration transducer etc. detecting hull vibration.In addition, also can being the disorder of air flowing by sound understanding, eliminating by noise or by controlling sound the disorder that the soundproof effect after noise is detected as air flowing.That is, eliminating as to noise or by controlling sound the detecting unit that the soundproof effect after noise detects, the flow sensor, hot wire probe etc. that detect air flowing can be used.Also can improve the gain of microphone, detect air flowing.
In addition, in present embodiment 1, FIR filter 158 and LMS algorithm device 159 is employed in signal processing apparatus 201, but, as long as make the Sound close detected by soundproof effect detection microphone 191 in the self-adaptive signal processing circuit of zero, the filtered-X algorithm usually adopted in active sound reduction method can be utilized.In addition, signal processing apparatus 201 also can be configured to generate according to fixing tap coefficient control sound, and is not Adaptive Signal Processing.In addition, signal processing apparatus 201 also can be analog signal processing circuit, and is not digital signal processing circuit.
In addition, in present embodiment 1, record for being configured with the situation of carrying out the air cooled heat exchanger 50 producing condensation, but, also can apply when configuring and not producing heat exchanger 50 of condensation degree, there is following effect: no matter condensation ground whether can be there is by heat exchanger 50, prevent noise sensing microphones 161, control loudspeaker 181 and soundproof effect from detecting the hydraulic performance decline of microphone 191 etc.
Embodiment 2.
Below, other embodiments of active sound reduction method are described.In addition, in present embodiment 2, identical label is used to carry out describing to the function identical with embodiment 1 or structure.
Figure 10 is the profilograph of the indoor set that embodiments of the present invention 2 are shown.In addition, Figure 10 is using the front face side of the right side of figure as indoor set 100.
The indoor set 100 recorded in present embodiment 2 is with the difference of the indoor set 100 of embodiment 1, in the indoor set 100 recorded in embodiment 1, the noise sensing microphones 161 for carrying out active noise elimination and soundproof effect is used to detect these two microphones of microphone 191, the generation controlling sound is carried out by signal processing apparatus 201, and in the indoor set 100 of present embodiment 2, these two microphones are replaced into a microphone and noise/soundproof effect detection microphone 211.In addition, correspondingly the method for signal transacting is different, and thus the content of signal processing apparatus 204 is different.
Export for the control loudspeaker 181 of the control sound of noise to be configured at the wall portion on the downside of fan 20 from wall towards the mode of wind path central authorities, and, on the downside of it, be configured with noise/soundproof effect detect microphone 211, it is for detecting the control sound that makes to export from control loudspeaker 181 and being propagated by wind path from fan 20 and sound after the noise interference spread out of from blow-off outlet 3.Control loudspeaker 181 and noise/soundproof effect detect microphone 211 and are installed between fan 20 and heat exchanger 50.
The output signal that noise/soundproof effect detects microphone 211 is imported into as the signal processing apparatus 204 for generating the control Sound generation unit to the signal (control sound) that control loudspeaker 181 controls.
Figure 11 is the structure chart of the signal processing apparatus that embodiments of the present invention 2 are shown.The structure chart of signal processing apparatus 204 is shown.Amplified by microphone amplifier 151 by the signal of telecommunication that noise/soundproof effect detection microphone 211 carries out changing from voice signal and obtains, and be converted to data signal by A/D converter 152 from analog signal.Data signal after conversion is transfused to LMS algorithm device 159, and this data signal is imported into FIR filter 158 and LMS algorithm device 159 with the differential signal of the signal output signal of FIR filter 158 and FIR filter 160 convolution obtained.Then, implement the convolution algorithm based on the tap coefficient calculated by LMS algorithm device 159 by FIR filter 158 pairs of differential signals, then, be converted to analog signal by D/A converter 154 from data signal, amplify at exaggerated device 155, and export from control loudspeaker 181 as control sound.
Then, the suppressing method of the operating sound of indoor set 100 is described.Sound after the control sound exported from control loudspeaker 181 is interfered the operating sound (noise) comprising the air-supply sound of fan 20 indoor set 100, detect microphone 211 by the noise/soundproof effect be arranged between fan 20 and heat exchanger 50 to detect, and via microphone amplifier 151, A/D converter 152 and become data signal.
In order to carry out the suppressing method equal with the suppressing method of the operating sound described in embodiment 1, input in FIR filter 158 is needed to want the noise of eliminating the noise, and as shown in Equation 1, in LMS algorithm device 159, input makes as the noise wanting to eliminate the noise of input signal and as the sound after the control interference of sound of error signal.But, detect in microphone 211 at noise/soundproof effect, due to the sound after making control interference of sound can only be detected, therefore need to generate according to by the sound that noise/soundproof effect detection microphone 211 detects the noise wanting to eliminate the noise.
Figure 12 be illustrate noise with control the sound after interference of sound waveform (in Figure 12 a), control the figure of the waveform (b in Figure 12) of sound and the waveform (c in Figure 12) of noise.According to voice technique principle, obtaining b+c=a, therefore, in order to obtain c according to a, c can be obtained by the difference of getting a and b.That is, according to the sound after the interference detected by noise/soundproof effect detection microphone 211 and the difference controlling sound, the noise wanting to eliminate the noise can be generated.
Figure 13 illustrates that the control signal exported from FIR filter 158 becomes control sound and export from control loudspeaker 181, then detects microphone 211 by noise/soundproof effect and detects and the figure in the path of input signal treating apparatus 204.Represent the path via detecting microphone 211 from D/A converter 154, amplifier 155, control loudspeaker 181 to noise/soundproof effect, and detect microphone 211, microphone amplifier 151 and A/D converter 152 via noise/soundproof effect.
If the transmission characteristic that this path has is set to H, then the FIR filter 160 of Figure 11 is used for estimating this transmission characteristic H.Convolution algorithm is carried out by the output signal of FIR filter 158 and FIR filter 160, the signal b detected by noise/soundproof effect detection microphone 211 can be estimated as by controlling sound, ask for the difference with the sound a detected by noise/soundproof effect after interference that microphone 211 detects again, generate the noise c wanting to eliminate the noise thus.
The noise c eliminated the noise that wants generated like this is provided to LMS algorithm device 159 and FIR filter 158 as input signal.The data signal that have passed by LMS algorithm device 159 have updated the FIR filter 158 of tap coefficient is converted to analog signal by D/A converter 154, and exaggerated device 155 amplifies, spread out of the wind path in indoor set 100 from the control loudspeaker 181 be arranged between fan 20 and heat exchanger 50 as control sound.
On the other hand, detect in microphone 211 being arranged on the noise on the downside of control loudspeaker 181/soundproof effect, detect the control sound that makes to export from control loudspeaker 181 and to be propagated by wind path from fan 20 and sound after the noise interference spread out of from blow-off outlet 3.In the error signal of above-mentioned LMS algorithm device 159, input the sound detected by noise/soundproof effect detection microphone 211, therefore, upgrade the tap coefficient of FIR filter 158, make the Sound close after this interference in zero.Consequently, the noise near the control sound suppression blow-off outlet 3 that have passed FIR filter 158 can be utilized.
Like this, in the indoor set 100 applying active sound reduction method, noise/soundproof effect detection microphone 211 and control loudspeaker 181 are configured between fan 20 and heat exchanger 50, thus, the necessary parts of active noise elimination can not be installed in the region B that condensation occurs, therefore, it is possible to prevent water droplet to be attached to control loudspeaker 181, noise/soundproof effect detects microphone 211, and can prevent the fault of the decline of acoustic attenuation performance and loudspeaker, microphone.
In addition, in present embodiment 2, noise/soundproof effect is detected the upstream side that microphone 211 is configured in heat exchanger 50, but, also the lower end of indoor set 100 can be configured in as shown in Figure 14, not with the afoul place of wind (avoiding the position that wind path flows to) blown out from blow-off outlet 3.In addition, enumerated and microphone has been eliminated the example of the detecting unit that the soundproof effect after noise detects as to noise or by controlling sound, but, also can be made up of the acceleration transducer etc. detecting hull vibration.In addition, also can being the disorder of air flowing by sound understanding, eliminating by noise or by controlling sound the disorder that the soundproof effect after noise is detected as air flowing.That is, eliminating as to noise or by controlling sound the detecting unit that the soundproof effect after noise detects, the flow sensor, hot wire probe etc. that detect air flowing can be used.Also can improve the gain of microphone, detect air flowing.
In addition, in present embodiment 2, use FIR filter 158 and LMS algorithm device 159 as the self-adaptive signal processing circuit of signal processing apparatus 204, but, as long as make the Sound close detected in noise/soundproof effect detection microphone 211 in the self-adaptive signal processing circuit of zero, the filtered-X algorithm usually adopted in active sound reduction method can be utilized.In addition, signal processing apparatus 204 also can be configured to generate according to fixing tap coefficient control sound, and is not Adaptive Signal Processing.In addition, signal processing apparatus 204 also can be analog signal processing circuit, and is not digital signal processing circuit.
In addition, in present embodiment 2, record for being configured with the situation of carrying out the air cooled heat exchanger 50 producing condensation, but, also can apply when configuring and not producing heat exchanger 50 of condensation degree, there is following effect: can not consider whether heat exchanger 50 produces condensation and occur and prevent noise/soundproof effect from detecting microphone 211, the hydraulic performance decline of control loudspeaker 181 grade.
Embodiment 3.
Such as, also noise elimination mechanism can be set in following such position.In addition, in present embodiment 3, identical label is used to carry out describing for the function identical with embodiment 1 ~ embodiment 2 or structure.
In embodiments of the present invention 3, the noise sensing microphones 161(had in the downstream of heat exchanger 50 in the structural element of noise elimination mechanism is equivalent to noise detection apparatus), control loudspeaker 181(is equivalent to control voice output) and soundproof effect detect microphone 191(and be equivalent to soundproof effect checkout gear).Therefore, it is possible to the disorder being reduced in the air-flow occurred in fan 20 detects the impact of microphone 191 on soundproof effect, the path that the control sound sent from control loudspeaker 181 arrives control point can be shortened.Therefore, the indoor set 100 of present embodiment 3 can carry out high-precision Noise measarement by noise elimination mechanism.In addition, the indoor set of present embodiment 3 can also cut down the cost of signal processing circuit.
Below, be described in more detail.
Figure 15 is the profilograph of the indoor set that embodiments of the present invention 3 are shown.This Figure 15 and Fig. 1 is same, is illustrated in the left side of figure as the front face side of indoor set 100.According to Figure 15, the structure of indoor set 100 is described.
About the structure of indoor set 100, the configuration of noise elimination mechanism and noise sensing microphones 161, control loudspeaker 181 is different from Fig. 1, and the structure beyond this is identical with the indoor set 100 of embodiment 1.
Indoor set 100 has the noise elimination mechanism be made up of noise sensing microphones 161, control loudspeaker 181, soundproof effect detection microphone 191 and signal processing apparatus 201.Noise sensing microphones 161 is arranged on the downstream of heat exchanger 50.Soundproof effect detects the blow-off outlet 3 neighbouring (such as forming nozzle 6 part of blow-off outlet 3) that microphone 191 is arranged on the downstream of heat exchanger 50.In addition, control loudspeaker 181 is arranged on the side (more particularly, in the downside of heat exchanger 50, and detecting near microphone 191 at soundproof effect) of housing 1.In addition, to configure control loudspeaker 181 from the wall of housing 1 towards the mode of wind path central authorities and soundproof effect detects microphone 191.
In addition, the setting position of soundproof effect detection microphone 191 is not limited to nozzle 6 part of blow-off outlet 3, as long as the opening portion of blow-off outlet 3.Such as, also soundproof effect can be detected bottom or the sidepiece that microphone 191 is arranged on blow-off outlet 3.In addition, in present embodiment 3, control loudspeaker 181 is arranged on the side of housing 1, but, also can control loudspeaker 181 be arranged on before housing 1 or the back side.In addition, noise sensing microphones 161 not necessarily must be arranged on the downstream of heat exchanger 50, also control loudspeaker 181 and soundproof effect can be detected the downstream that microphone 191 is arranged on heat exchanger 50.
In addition, the output signal of noise sensing microphones 161 and soundproof effect detection microphone 191 is imported into the signal processing apparatus 201 for generating the signal (control sound) that control loudspeaker 181 controls.The structure of signal processing apparatus 201 is identical with the indoor set 100 in embodiment 1.
At this, the noise elimination mechanism of present embodiment 3, in order to obtain higher soundproof effect, needs the sound that detected by noise sensing microphones 161 higher with the coherence being detected the sound that microphone 191 detects by soundproof effect.But, if there is the region of the air turbulence caused because of the rotation of the impeller 25 of fan 20 (such as, wind path between indoor set 100 fan 20 and heat exchanger 50) in noise sensing microphones 161 is set and soundproof effect detects microphone 191, then can detect the pressure oscillation composition that composition beyond noise originally and air turbulence cause, the coherence between two microphones reduces.
Therefore, in the indoor set 100 of present embodiment 3, noise sensing microphones 161 and soundproof effect are detected the downstream that microphone 191 is arranged on heat exchanger 50.Indoor set 100 arranges fan 20 at the upstream side of heat exchanger 50, arranges heat exchanger 50 therefore, it is possible to detect between microphone 191 and fan 20 at noise sensing microphones 161 and soundproof effect.When arranging noise sensing microphones 161 like this and soundproof effect detects microphone 191, the air turbulence occurred in fan 20 because of by suppressed between the fin 56 of heat exchanger 50, therefore, it is possible to detect at noise sensing microphones 161 and soundproof effect the impact reducing air turbulence in microphone 191.Therefore, the coherence that noise sensing microphones 161 and soundproof effect detect between microphone 191 rises, and can obtain higher soundproof effect.
Figure 16 be illustrate detect the setting position of microphone based on noise sensing microphones and soundproof effect two microphones between the performance plot of coherence.At this, Figure 16 (a) is the performance plot of the coherence illustrated between two microphones that noise sensing microphones 161 and soundproof effect to be detected microphone 191 is arranged on upstream side (more particularly, between fan 20 and heat exchanger 50) of heat exchanger 50.In addition, Figure 16 (b) is the performance plot of the coherence illustrated between two microphones that noise sensing microphones 161 and soundproof effect to be detected when microphone 191 is arranged on the downstream of heat exchanger 50.Figure 16 (a) and Figure 16 (b) are compared known, the such indoor set 100 of the upstream side of heat exchanger 50 is arranged at fan 20, noise sensing microphones 161 and soundproof effect are detected the downstream that microphone 191 is arranged on heat exchanger 50, and the coherence thus between two microphones rises.
In addition, the distance detecting the setting position (control point) of microphone 191 from the setting position of control loudspeaker 181 to soundproof effect also affects soundproof effect.That is, the length that the control sound exported from control loudspeaker 181 arrives the bang path at control point (soundproof effect detects the setting position of microphone 191) also affects soundproof effect.More particularly, the control sound amplitude response and the phase characteristic the bang path arriving control point (soundproof effect detects the setting position of microphone 191) that export from control loudspeaker 181 change.When in bang path, amplitude response and phase characteristic change, control sound be no longer with noise same-amplitude and opposite phase time, soundproof effect reduce.
In order to suppress the reduction of such soundproof effect caused by bang path, in common Filtered-X algorithm, obtain the bang path controlling sound in advance, and correct generating in the process controlling sound, eliminate the problems referred to above point thus.But when bang path is elongated, the filter tap number of the bang path obtained is elongated, calculation process increases.In addition, when making sonic velocity change etc. in the change because of temperature etc., when bang path is longer, the bang path obtained becomes greatly with the error of actual bang path, soundproof effect reduction.
Therefore, in order to suppress the decline of the soundproof effect caused by bang path, preferably control loudspeaker 181 and soundproof effect being detected microphone 191 and closely arranging.By arranging control loudspeaker 181 and soundproof effect detection microphone 191 like this, the transmission distance controlling sound can be shortened, the change of amplitude response and phase characteristic can be suppressed for less.That is, by control loudspeaker 181 and soundproof effect are detected microphone 191 close to arranging, the superposition of high-precision sound wave can be realized, therefore, it is possible to obtain higher soundproof effect.Therefore, in the indoor set 100 of present embodiment 3, control loudspeaker 181 is set at the soundproof effect detection setting position of microphone 191 and the downstream of heat exchanger 50.Therefore, it is possible to shorten the bang path that the control sound exported from control loudspeaker 181 arrives control point (soundproof effect detects the setting position of microphone 191), higher soundproof effect can be obtained.
In addition, indoor set 100 can arrange fan 20 at the upstream side of heat exchanger 50, therefore, it is possible to the top that will be arranged on as the fan 20 of noise source in housing 1.Therefore, it is possible to the noise extended to from fan 20 export from blow-off outlet 3 till the bang path of noise.Therefore, by control loudspeaker 181 being arranged on the downstream of heat exchanger 50, can noise sensing microphones 161 and the distance of control loudspeaker 181 be obtained longer.That is, the operation time of longer generation for the control sound of the sound detected by noise sensing microphones 161 can be obtained, thus will arithmetic speed not be set at a high speed.Therefore, the indoor set 100 of present embodiment 1 can reduce A/D converter 152 or carry out the specification of digital signal processor of signal transacting, thus can cut down cost.
In addition, when noise sensing microphones 161, control loudspeaker 181 and soundproof effect being detected microphone 191 and being arranged on the downstream of heat exchanger 50, may produce owing to directly contacting with cold air and condense, therefore can use the parts implementing waterproof processing.
Above, the indoor set 100 of present embodiment 3 has at least control loudspeaker 181 in the structural element of noise elimination mechanism and soundproof effect detects microphone 191 in the downstream of heat exchanger 50.Therefore, indoor set 100 can be reduced in the disorder of the air-flow occurred in fan 20 to the impact of soundproof effect detection microphone 191, can shorten the path that the control sound sent from control loudspeaker 181 arrives control point (soundproof effect detects the setting position of microphone 191).Therefore, indoor set 100 can carry out high-precision Noise measarement by noise elimination mechanism.
In addition, in the indoor set 100 of present embodiment 3, noise sensing microphones 161 is also arranged on the downstream of heat exchanger 50.Therefore, it is possible to the disorder being reduced in the air-flow occurred in fan 20 detects the impact of microphone 191 on noise sensing microphones 161 and soundproof effect, the coherence between two microphones can be improved, therefore, it is possible to obtain higher soundproof effect.
In addition, in the indoor set 100 of present embodiment 3, can at the upstream side of heat exchanger 50 and in housing 1 above fan 20 is set.Therefore, it is possible to the bang path of the noise from fan 20 is got longer, that noise sensing microphones 161 and the distance of control loudspeaker 181 can be got is longer.Therefore, will the speed of calculation process not be set at a high speed, therefore, it is possible to cut down the cost of indoor set 100.
Embodiment 4.
Use following noise elimination mechanism so also can obtain the soundproof effect same with embodiment 3.In addition, in present embodiment 4, the not special project described is identical with embodiment 1 ~ embodiment 3, uses identical label to carry out describing to identical function or structure.
Figure 17 is the profilograph of the indoor set that embodiments of the present invention 4 are shown.
The indoor set 100 of present embodiment 4 is with the difference of the indoor set 100 of embodiment 3, and the microphone for active noise elimination is different.More particularly, the indoor set 100 of embodiment 3 uses two microphones (noise sensing microphones 161 and soundproof effect detect microphone 191), carries out by signal processing apparatus 201 generation controlling sound.On the other hand, in the indoor set 100 of present embodiment 4, these noise sensing microphones 161 and soundproof effect are detected microphone 191 and be replaced into a microphone and noise/soundproof effect detection microphone 211.In addition, because the method for the different thus signal transacting of the microphone for initiatively eliminating the noise is different, therefore the indoor set 100 of present embodiment 4 uses the signal processing apparatus 204 different from the signal processing apparatus 201 of the indoor set 100 of embodiment 3.
That is, the indoor set 100 of present embodiment 4 has the noise elimination mechanism be made up of control loudspeaker 181, noise/soundproof effect detection microphone 211 and signal processing apparatus 204.
More particularly, noise/soundproof effect detects the blow-off outlet 3 neighbouring (such as forming nozzle 6 part of blow-off outlet 3) that microphone 211 is installed in the downstream being positioned at heat exchanger 50.This noise/soundproof effect detect microphone 211 detect the control sound that makes to export from control loudspeaker 181 interfere with the operating sound (noise) of indoor set 100 of the air-supply sound comprising fan 20 after sound.In addition, the control loudspeaker 181 exported for the control sound of noise is arranged on the side (more particularly, in the downside of heat exchanger 50, and detecting near microphone 211 at noise/soundproof effect) of housing 1.In addition, control loudspeaker 181 and noise/soundproof effect detects microphone 211 to be configured in the downside of heat exchanger 50 towards the mode of wind path central authorities from the wall of housing 1.
In addition, the setting position of noise/soundproof effect detection microphone 211 is not limited to nozzle 6 part of blow-off outlet 3, as long as the opening portion of blow-off outlet 3.Such as, also noise/soundproof effect can be detected bottom or the sidepiece that microphone 211 is arranged on blow-off outlet 3.In addition, in present embodiment 4, control loudspeaker 181 is arranged on the side of housing 1, but, also can control loudspeaker 181 be arranged on before housing 1 or the back side.
In addition, the output signal of noise/soundproof effect detection microphone 211 is imported into the signal processing apparatus 204 for generating the signal (control sound) that control loudspeaker 181 controls.In addition, the structure of signal processing apparatus 204 is identical with the indoor set 100 in embodiment 2.
At this, the noise elimination mechanism of present embodiment 4, in order to obtain higher soundproof effect, needs to make detected in the sound that microphone 211 detects the pressure oscillation composition not comprising air turbulence and cause by noise/soundproof effect.
Therefore, in the indoor set 100 of present embodiment 4, noise/soundproof effect is detected the downstream that microphone 211 is arranged on heat exchanger 50.Indoor set 100 arranges fan 20 at the upstream side of heat exchanger 50, arranges heat exchanger 50 therefore, it is possible to detect between microphone 211 and fan 20 at noise/soundproof effect.When arranging noise/soundproof effect like this and detecting microphone 211, the air turbulence occurred in fan 20 is because of suppressed between the fin 56 by heat exchanger 50.Therefore, noise/soundproof effect detects the impact that microphone 211 reduces air turbulence, can obtain higher soundproof effect.
In addition, from the setting position of control loudspeaker 181 to noise/distance of setting position (control point) that soundproof effect detects microphone 211 also affects soundproof effect.That is, the length that the control sound exported from control loudspeaker 181 arrives the bang path at control point (noise/soundproof effect detects the setting position of microphone 211) also affects soundproof effect.More particularly, the control sound amplitude response and the phase characteristic the bang path arriving control point (noise/soundproof effect detects the setting position of microphone 211) that export from control loudspeaker 181 change.When in bang path, amplitude response and phase characteristic change, control sound be no longer with noise same-amplitude and opposite phase time, soundproof effect reduce.
In order to suppress the reduction of such soundproof effect caused by bang path, in common Filtered-X algorithm, obtain the bang path controlling sound in advance, and correct generating in the process controlling sound, eliminate the problems referred to above point thus.But when bang path is elongated, the filter tap number of the bang path obtained is elongated, calculation process increases.In addition, when making sonic velocity change etc. in the change because of temperature etc., when bang path is longer, the bang path obtained becomes greatly with the error of actual bang path, soundproof effect reduction.
Therefore, in order to suppress the decline of the soundproof effect caused by bang path, preferably control loudspeaker 181 and noise/soundproof effect are detected microphone 211 close to arranging.By arranging control loudspeaker 181 and noise/soundproof effect detection microphone 211 like this, the transmission distance controlling sound can be shortened, the change of amplitude response and phase characteristic can be suppressed for less.That is, by control loudspeaker 181 and noise/soundproof effect are detected microphone 211 close to arranging, the superposition of high-precision sound wave can be realized, therefore, it is possible to obtain higher soundproof effect.
Therefore, in the indoor set 100 of present embodiment 4, control loudspeaker 181 is set at noise/soundproof effect detection setting position of microphone 211 and the downstream of heat exchanger 50.Therefore, it is possible to shorten the bang path that the control sound exported from control loudspeaker 181 arrives control point (noise/soundproof effect detects the setting position of microphone 211), higher soundproof effect can be obtained.
In addition, when control loudspeaker 181 and noise/soundproof effect being detected microphone 211 and being arranged on the downstream of heat exchanger 50, may produce owing to directly contacting with cold air and condense, therefore can use the parts implementing waterproof processing.
Above, heat exchanger 50 is arranged on the downstream of fan 20 by the indoor set 100 of present embodiment 4.Further, indoor set 100 has at least control loudspeaker 181 in the structural element of noise elimination mechanism and noise/soundproof effect detects microphone 211 in the downstream of heat exchanger 50.Therefore, indoor set 100 can be reduced in the disorder of the air-flow occurred in fan 20 to the impact of noise/soundproof effect detection microphone 211, can shorten the path that the control sound sent from control loudspeaker 181 arrives control point (noise/soundproof effect detects the setting position of microphone 211).Therefore, indoor set 100 can carry out high-precision Noise measarement by noise elimination mechanism.
Embodiment 5.
(on wheel hub, noise sensing microphones is set)
In addition, such as also noise elimination mechanism can be set in following such position.In addition, in present embodiment 5, identical label is used to carry out describing for the function identical with embodiment 1 ~ embodiment 4 or structure.
Figure 18 is the profilograph of the indoor set that embodiments of the present invention 5 are shown.The front face side of the right side of figure as indoor set 100 illustrates by this Figure 18.
Heat exchanger 50 is fixed in housing 1 by heat exchanger fixed part 58 by the indoor set 100 of present embodiment 5.As shown in the hollow arrow in Figure 18, when fan 20 works, from suction inlet 2 to the air in suction chamber the wind path in indoor set 100, this suction air is cooled or heating at the heat exchanger 50 being arranged in fan 20 bottom, then from blow-off outlet 3 to indoor blowout.
Figure 19 is the upward view (figure from the downside of Figure 18 is observed) of the fan of embodiments of the present invention 5.In addition, Figure 20 is the sectional view being cut along cross section M by the fan 20 shown in Figure 19 and obtain.
In present embodiment 5, use the fan after by modularizations such as fan 20, fan motor, horn mouth and support of motors 16.This is because, if be formed as the structure that can load and unload within the case 1, then can improve maintainability, and the precision in gap between the leaf improving fan 20.Fan 20 has the impeller 25 being called as movable wing.Fan motor as the power source of this impeller 25 is arranged in the fixed part 17 of support of motor 16.In addition, fixed part 17 is connected with by the basket etc. of the fan after modularization by support component 18.Latticed dash area in Figure 19 illustrates the part (that is, tangent with the inner peripheral portion of the blade of impeller 25 inscribed circle) of the inner circumferential of the blade being equivalent to fan 20.In addition, support component 18 also can provide static wing effect as wing or tabular.
Be connected by rotating shaft 20a with the wheel hub 21 of impeller 25 as the fan motor of the power source of impeller 25.Thus, the rotation of fan motor is delivered to impeller 25 via rotating shaft 20a, and impeller 25 rotates.Rotated by impeller 25, hollow arrow from air to Figure 20 shown in direction flowing (air-supply).In addition, the part shown in oblique line is utilized to represent the part rotated when fan 20 works in Figure 20.In addition, even if do not have the part of oblique line to represent when fan 20 works also non-rotary part (not dynamic component).In addition, the part (that is, tangent with the inner peripheral portion of the blade of impeller 25 inscribed circle) of the inner circumferential of the blade of fan 20 becomes the peripheral part of wheel hub 21.In addition, in present embodiment 5, the diameter of fixed part 17 is formed as roughly the same with the diameter of wheel hub 21.
Again be conceived to Figure 18, be provided with the noise sensing microphones 161 as noise detection apparatus at the fixed part 17 of inner circumferential of the blade being equivalent to fan 20, it detects the operating sound (noise) comprising the indoor set 100 of the air-supply sound of fan 20.That is, noise sensing microphones 161 is configured in cylindrical region (hereinafter referred to as cylindrical region S), and this cylindrical region makes the inscribed circle tangent with the inner peripheral portion of the blade of impeller 25 extend on the rotating shaft direction of impeller 25 and be formed.In addition, as shown in figure 20, this fixed part 17 is configured to the non rotating when fan 20 works, and is independently relative to the impeller 25 rotated.Therefore, noise sensing microphones 161 also non rotating when fan 20 works.In addition, as exporting for the control loudspeaker 181 of the control voice output of the control sound of noise, to be configured in the downside of noise sensing microphones 161 towards the mode of wind path central authorities from the wall of housing 1.
In addition, on the wall of the lower end of indoor set 100, as detecting the noise that spreads out of from blow-off outlet 3 and the soundproof effect detecting the soundproof effect checkout gear of soundproof effect detects microphone 191, the such as top of blow-off outlet 3 is installed in.This soundproof effect detects microphone 191 and is installed into towards the direction contrary with stream.In addition, the setting position of soundproof effect detection microphone 191 is not limited to the top of blow-off outlet 3, as long as the opening portion of blow-off outlet 3.Such as also soundproof effect can be detected bottom or the sidepiece that microphone 191 is arranged on blow-off outlet 3.In addition, soundproof effect detects microphone 191 does not need to be set to towards contrary with stream exactly.As long as towards indoor set 100(housing) arranged outside soundproof effect detect microphone 191.That is, as long as soundproof effect detects microphone 191 and is arranged on the position can detected and be output to indoor noise.
Further, the output signal that noise sensing microphones 161 and soundproof effect detect microphone 191 is imported into for generating control sound generating apparatus to the signal (control sound) that control loudspeaker 181 controls and signal processing apparatus 207.The noise elimination mechanism of indoor set 100 is made up of these noise sensing microphones 161, control loudspeaker 181, soundproof effect detection microphone 191 and signal processing apparatus 207.
Then the action of indoor set 100 is described.When indoor set 100 works, the impeller 25 of fan 20 rotates, the air in the upside suction chamber of fan 20, and carries air on the downside of fan 20, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20, produce operating sound (noise), this sound is propagated to downstream.
Near the blow-off outlet 3 of fan 20, produce air turbulence due to the rotation of impeller 25.In addition, the air blown out from fan 20 blows out toward the outer side from the blow-off outlet of fan 20, thus bumps against the sidewall of the housing 1 of indoor set 100, causes air turbulence further.Therefore, the pressure oscillation caused in the side-walls air turbulence of housing 1 increases.In contrast to this, in the inner circumferential region in the inner part (cylindrical region S) of the ratio blade of fan 20, air turbulence is less, and the pressure oscillation that air-flow causes is also less.
In order to prove this phenomenon, Figure 22 shows the experimental result obtained by the visualizing air currents blown out from fan 20.Figure 22 is the right-hand member provided with fan 20 of the cylinder at pipe shape, makes white cigarette be trapped in pipeline, photo when then making fan 20 work.Observe the neighbouring discovery of blow-off outlet of fan 20, except the region near fixed part 17 and except cylindrical region S, the white cigarette be detained weakens, and white cigarette flows along with air-flow.On the other hand, the state keeping white cigarette to be detained with cylindrical region S near the fixed part 17 of fan 20, the impact of air-flow is less.That is, near the fixed part 17 of known fan 20 and cylindrical region S be not vulnerable to the impact of air-flow, the pressure oscillation that air turbulence causes is less.
The air carried by fan 20 passes through in wind path, and heat exchanger 50 is carried.Such as, when carrying out cooling operation, from refrigerant piping heat exchanger 50 refrigerant conveying be connected with off-premises station (not shown).The air that heat exchanger 50 is carried is become cold air, directly from blow-off outlet 3 to indoor releasing by the refrigerant cools of flowing in heat exchanger 50.
Then, the suppressing method of the operating sound of indoor set 100 is described.
Figure 21 is the structure chart of the signal processing apparatus that embodiments of the present invention 5 are shown.
The operating sound (noise) comprising the air-supply sound of fan 20 in indoor set 100, the noise sensing microphones 161 installed by the fixed part 17 at fan 20 detects.The noise detected by noise sensing microphones 161 via microphone amplifier 151, A/D converter 152 and become data signal, and inputs FIR filter 158 and LMS algorithm device 159.
The tap coefficient of FIR filter 158 is successively upgraded by LMS algorithm device 159.In LMS algorithm device 159, same with the formula 1 of embodiment 1, according to (h(n+1)=h(n)+2 μ e(n) x(n)) upgrade best tap coefficient, make error signal e close to zero.
Like this, analog signal is converted into being have updated the data signal passed through in the FIR filter 158 of tap coefficient by LMS algorithm device 159 in D/A converter 154, and exaggerated device 155 amplifies, and output to the wind path in indoor set 100 from control loudspeaker 181 as control sound.
On the other hand, be arranged on the blow-off outlet 3 of indoor set 100 top and towards with the rightabout soundproof effect of stream detect microphone 191 detect the control sound that makes to export from control loudspeaker 181 with to be propagated from fan 20 by wind path and from blow-off outlet 3 output to indoor noise interfere after sound.The signal detected by soundproof effect detection microphone 191 is converted into data signal, and is averaged by weighted units 153.
Figure 23 is the structure chart of the circuit of the weighted units that embodiments of the present invention 5 are shown.Weighted units 153 is made up of integrator, and this integrator is formed by being multiplied by the multiplier 121 of weight coefficient, adder 122, the delay element 123 postponing 1 sampling and multiplier 124 to input signal.
In present embodiment 5, the weight coefficient of multiplier 121 can set from outside according to arranging environment etc.
Such as, under the environment comparatively large in interference, action is unstable, less weight coefficient can be set to multiplier 121.On the contrary, under the environment that interference is less, larger weight coefficient can be set to multiplier 121.Thereby, it is possible to change the susceptibility to environmental change.At this, also can be, before LMS algorithm device 159 is stable, be not weighted the equalization that unit 153 performs.This is because, fully can not reduce noise in LMS algorithm device 159 unstabilized period, there is the situation that the output valve of weighted units 153 is out of control.In addition, also can be set as resetting when the output valve of weighted units 153 exceedes certain numerical value.
The error signal e of the signal be averaged like this as above-mentioned LMS algorithm device 159 is processed.And, carry out FEEDBACK CONTROL and make this error signal e close to zero, and suitably upgrade the tap coefficient of FIR filter 158.Consequently, the noise near blow-off outlet 3 can be suppressed according to the control sound that have passed FIR filter 158.
The noise from indoor set 100 that people feels outputs to the noise behind indoor from blow-off outlet 3, thus namely indoor towards the opposition side of stream by making soundproof effect detect microphone 191, can detect and be output to indoor noise.That is, detecting microphone 191 by installing soundproof effect on the top of blow-off outlet 3 and towards the direction contrary with stream, the sound higher with the coherence being output to indoor noise can be detected.In addition, soundproof effect detects microphone 191 and does not directly conflict mutually with air-flow, the broken empty sound that air-flow causes thus can not be detected.On the other hand, if make soundproof effect detect microphone 191 towards in stream, then the noise in stream can be detected.Therefore, the characteristic variations at the sound from blow-off outlet output cannot be detected, the characteristic of the sound of thus soundproof effect detection microphone 191 detection is different from indoor noise.Therefore, the sound detected by soundproof effect detection microphone 191 is caused to reduce with the coherence outputting to indoor sound.In addition, detect microphone 191 because air-flow directly impacts soundproof effect, thus cause soundproof effect to detect microphone 191 and empty sound detected brokenly, cause coherence to reduce further.
In addition, comprise the sound beyond the noise much produced from fan 20 in indoor, thus cause the stability of FEEDBACK CONTROL to be damaged by the sound beyond these noises.Therefore, in the prime configuration weighted units 153 of FEEDBACK CONTROL, thus by the sound equalization beyond noise.Thereby, it is possible to eliminate the composition of the sound beyond incoherent noise, FEEDBACK CONTROL can be made to play consistently effect.That is, the coherence that noise sensing microphones 161 and soundproof effect detect microphone 191 can be improved.
Further, in present embodiment 5, noise sensing microphones 161 is installed on the fixed part 17 of fan 20, thus air-flow does not directly conflict with noise sensing microphones 161.Therefore, it is possible to reduce noise sensing microphones 161 the pressure oscillation composition that air turbulence causes to be detected.Therefore, noise sensing microphones 161 can detect and the operating sound of fan 20 and the higher sound of the coherence of noise.In addition, detect microphone 191 owing to installing soundproof effect on the top of blow-off outlet 3 and towards the direction contrary with stream, thus air-flow does not detect microphone 191 with soundproof effect and directly conflicts, and soundproof effect detects the impact that microphone 191 is not subject to air-flow.In addition, soundproof effect detects microphone 191 only can detect the noise being output to indoor, soundproof effect thus can be utilized to detect microphone 191 and the noise higher with the coherence being physically located in the noise that indoor people hears detected.In addition, weighted units 153 is utilized to average the sound detected by soundproof effect detection microphone 191, and carry out FEEDBACK CONTROL, thus can be detected the composition equalization except the noise from indoor set 100 comprised in sound that microphone 191 detects by soundproof effect and eliminate.Therefore, the detection sound for noise sensing microphones 161 and soundproof effect detection microphone 191 can obtain higher coherence.Based on these situations, detect between the detection sound of microphone 191 and the noise of the indoor of machine 100 output noise indoor at the detection sound of the noise produced from fan 20, noise sensing microphones 161, soundproof effect, higher coherence can be obtained, higher soundproof effect can be obtained.
To by noise sensing microphones 161 actual installation the blade inner circumferential (cylindrical region S) comparing fan 20 in inner side time, coherence's determination experiment result that noise sensing microphones 161-soundproof effect detects between microphone 191 is described.
Figure 24 illustrates that detection sound when outside noise sensing microphones 161 being arranged on cylindrical region S makes fan 20 work, noise sensing microphones 161 and soundproof effect detect the coherence of the detection sound of microphone 191.In addition, detection sound when Figure 25 illustrates in inner side noise sensing microphones 161 being arranged on cylindrical region S and fan 20 is worked, noise sensing microphones 161 and soundproof effect detect the coherence of the detection sound of microphone 191.Compared by Figure 24 and Figure 25 known, coherence when noise sensing microphones 161 being arranged on the inner side of cylindrical region S is obviously higher.
In addition, by noise sensing microphones 161 being installed on the fixed part 17 of fan 20, noise sensing microphones 161 can being easily installed, and new parts count can not be increased, not need accurate installing mechanism.Further, by noise sensing microphones 161 being installed on the fixed part 17 of fan 20, fan 20 is shorter with the distance of noise sensing microphones 161, thus can shorten the height of indoor set 100.
In addition, in present embodiment 5, noise sensing microphones 161 is arranged on fixed part 17, but the intrinsic mechanical oscillation that also there is the rotation with fan 20 and produce pass to fixed part 17, cause noise sensing microphones 161 situation of this vibration to be detected.In this situation, noise sensing microphones 161 and soundproof effect is caused to detect the coherence of microphone 191 in local deteriorated sometimes.In this case, also noise sensing microphones 161 can be arranged on the position beyond the fixed part 17 in cylindrical region S.Such as also according to shown in Figure 26, noise sensing microphones 161 can be arranged on the heat exchanger 50 in the scope be in cylindrical region S.In addition, such as also according to shown in Figure 27, noise sensing microphones 161 can be arranged on below the heat exchanger fixed part 58 in the scope be in cylindrical region S.By arranging noise sensing microphones 161 like this, compared with noise sensing microphones 161 being arranged on the situation of fixed part 17, the coherence that noise sensing microphones 161 and soundproof effect detect microphone 191 can be improved further, higher soundproof effect can be obtained.
In addition, also can as shown in figure 28, wall components 270 be utilized to cover noise sensing microphones 161.Owing to can intercept air-flow by wall components, thus noise sensing microphones 161 is not more vulnerable to the impact of air-flow, can obtain higher soundproof effect.Although wall components 270 is formed as roughly cylindric in Figure 28, the shape of wall components 270 can be arbitrary.
In addition, when noise sensing microphones 161 being installed on heat exchanger 50 or heat exchanger fixed part 58, wall components 270 also can be utilized to cover noise sensing microphones 161.Noise sensing microphones 161 is not more vulnerable to the impact of air-flow, can obtain higher soundproof effect.
In addition, wall components covering also can be utilized to be arranged on the top of blow-off outlet 3 and to detect microphone 191 towards with the rightabout soundproof effect of stream.Owing to blocking air-flow, thus soundproof effect detects the impact that microphone 191 is not vulnerable to air-flow yet, can obtain higher soundproof effect.
In addition, in present embodiment 5, FIR filter 158 and LMS algorithm device 159 is employed in signal processing apparatus 207, as long as but make the Sound close detected by soundproof effect detection microphone 191 in the self-adaptive signal processing circuit of zero, the filtered-X algorithm usually adopted in active sound reduction method can be utilized.In addition, weighted units 153 needs not be integrator, as long as the means that can average.In addition, signal processing apparatus 207 needs not be the structure of carrying out Adaptive Signal Processing, also can be to generate according to fixing tap coefficient the structure controlling sound.In addition, signal processing apparatus 207 needs not be digital signal processing circuit, also can be analog signal processing circuit.
In the indoor set 100 of above-described present embodiment 5, the noise sensing microphones 161 as noise detection apparatus is located in cylindrical region S, and is located at the not dynamic component of fan 20.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of indoor set 100, noise sensing microphones 161 can be set, thus can realize arranging the higher indoor set of the free degree 100.
In addition, the not dynamic component of fan 20 is not limited to fixed part 17.As long as be configured in the not dynamic component in cylindrical region S in the structural element of fan 20 at least partially, noise sensing microphones 161 can be set in the scope being in cylindrical region S of this not dynamic component.
In addition, in the indoor set 100 of present embodiment 5, the noise sensing microphones 161 as noise detection apparatus is located in cylindrical region S, and is located at the downstream of fan 20.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of indoor set 100, noise sensing microphones 161 can be set, thus can realize arranging the higher indoor set of the free degree 100.Further, because noise sensing microphones 161 does not detect the intrinsic mechanical oscillation produced along with the rotation of fan 20, thus with noise sensing microphones 161 is located at fan 20 not dynamic component situation compared with, can carry out precision higher active eliminate the noise.
In addition, when noise sensing microphones 161 is located at the downstream of fan 20, the structural element for arranging noise sensing microphones 161 is not limited to heat exchanger 50 or heat exchanger fixed part 58.As long as be configured in the structural element in the downstream of fan 20 at least partially in cylindrical region S, noise sensing microphones 161 can be set in the scope being in cylindrical region S of this structural element.
In addition, in the indoor set 100 of present embodiment 5, the soundproof effect as soundproof effect checkout gear is detected the opening portion that blow-off outlet 3 is located at by microphone 191, and configures towards the outside of indoor set 100.Therefore, it is possible to do not detect by the impact ground of air-flow the noise being output to indoor.Therefore, the room noise exported for machine 100 indoor and soundproof effect detect the detection sound of microphone 191, can obtain higher coherence.Therefore, it is possible to carry out high-precision active noise elimination to the room noise that machine 100 exports indoor.
In addition, in the indoor set 100 of present embodiment 5, have following circuit as the signal processing apparatus 207 controlling sound generating apparatus, this circuit is weighted the testing result detected by the soundproof effect detection microphone 191 as soundproof effect checkout gear, and carries out FEEDBACK CONTROL.Therefore, it is possible to average the sound except the noise of indoor set 100 detected by soundproof effect detection microphone 191 and eliminate.Detect at noise sensing microphones 161 and soundproof effect the sound that between microphone 191, coherence is higher therefore, it is possible to detect, the higher active of precision can be carried out and eliminate the noise.
In addition, in the indoor set 100 of present embodiment 5, noise sensing microphones 161 is arranged on the scope being arranged in cylindrical region S of the fixed part 17 of fan 20.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of air conditioner, noise sensing microphones 161 can be set, thus can realize arranging the higher indoor set of the free degree 100.
In addition, in the indoor set 100 of present embodiment 5, noise sensing microphones 161 is arranged on the scope that heat exchanger 50 is arranged in cylindrical region S.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of air conditioner, noise sensing microphones 161 can be set, thus can realize arranging the higher indoor set of the free degree 100.Further, because noise sensing microphones 161 does not detect the intrinsic mechanical oscillation produced along with the rotation of fan 20, thus with noise sensing microphones 161 is located at fan 20 not dynamic component situation compared with, the higher active of precision can be carried out and eliminate the noise.
In addition, in the indoor set 100 of present embodiment 5, noise sensing microphones 161 is arranged on the scope being arranged in cylindrical region S of heat exchanger fixed part 58.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of air conditioner, noise sensing microphones 161 can be set, thus can realize arranging the higher indoor set of the free degree 100.Further, because noise sensing microphones 161 does not detect the intrinsic mechanical oscillation produced along with the rotation of fan 20, thus with noise sensing microphones 161 is located at fan 20 not dynamic component situation compared with, the higher active of precision can be carried out and eliminate the noise.
In addition, in the indoor set 100 of present embodiment 5, wall components 270 is utilized to cover noise sensing microphones 161.By intercepting air-flow, noise sensing microphones 161 is not more vulnerable to the impact of air-flow, thus can obtain higher soundproof effect.
In addition, in the indoor set 100 of present embodiment 5, utilize wall components to cover soundproof effect and detect microphone 191.By intercepting air-flow, soundproof effect detects the impact that microphone 191 is not more vulnerable to air-flow, thus can obtain higher soundproof effect.
Embodiment 6.
Such indoor set 100 is described as follows in present embodiment 6, this indoor set 100 is configured with noise/soundproof effect and detects microphone 211, detects the noise/soundproof effect checkout gear of microphone 191 as the noise sensing microphones 161 be integrated with in present embodiment 5 and soundproof effect.In addition, in present embodiment 6, the not special project described is identical with embodiment 5, uses identical label to carry out describing to identical function or structure.
Figure 29 is the profilograph of the indoor set that embodiments of the present invention 6 are shown.The front face side of the right side of figure as indoor set 100 illustrates by this Figure 29.
Heat exchanger 50 is fixed in housing 1 by heat exchanger fixed part 58 by the indoor set 100 of present embodiment 6.As shown in the hollow arrow in Figure 29, when fan 20 works, from suction inlet 2 to the air in the wind path suction chamber in indoor set 100, this suction air is cooled or heats by the heat exchanger 50 being positioned at the bottom of fan 20, then from blow-off outlet 3 to indoor blowout.
The indoor set 100 of present embodiment 6 has following difference with the indoor set 100 of embodiment 5.That is, the indoor set 100 of embodiment 5 uses the noise sensing microphones 161 for carrying out active noise elimination and soundproof effect to detect these two microphones of microphone 191, and carries out by signal processing apparatus 207 generation controlling sound.And in the indoor set 100 of present embodiment 6, these two microphones are replaced as a microphone and noise/soundproof effect detection microphone 211.In addition, correspondingly the method for signal transacting is different, and therefore the content of signal processing apparatus 204 is different.Export for the control loudspeaker 181 of the control sound of noise to be configured in the sidewall portion of the housing 1 of indoor set 100 towards the mode of wind path central authorities from wall.In addition, configure noise/soundproof effect in the scope being arranged in cylindrical region S of fixed part 17 and detect microphone 211, its detect the control sound that makes to export from control loudspeaker 181 interfere with the operating sound (noise) of indoor set 100 of the air-supply sound comprising fan 20 after sound.
In addition, non rotating when this fixed part 17 is configured to the work when fan 20 is independently relative to the impeller 25 rotated.Therefore, noise/soundproof effect detects microphone 211 also non rotating when the work of fan 20.The output signal that noise/soundproof effect detects microphone 211 is imported into for generating control sound generating apparatus to the signal (control sound) that control loudspeaker 181 controls and signal processing apparatus 204.The noise elimination mechanism of indoor set 100 detects microphone 211, control loudspeaker 181 and signal processing apparatus 204 by these noises/soundproof effect and forms.The structure of signal processing apparatus 204 is identical with the Figure 11 illustrated in embodiment 2.
Then, the action of indoor set 100 is described.When indoor set 100 works, the impeller 25 of fan 20 rotates, the air in the upside suction chamber of fan 20, and carries air on the downside of fan 20, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20, produce operating sound (noise), this sound is propagated to downstream.Near the blow-off outlet of fan 20, same with embodiment 5, produce air turbulence due to the rotation of impeller 25.In addition, the air blown out from fan 20 blows out toward the outer side from the blow-off outlet of fan 20, thus bumps against the sidewall of the basket of indoor set 100, causes air turbulence further.Therefore, the pressure oscillation caused in the side-walls air turbulence of indoor set 100 increases.In contrast to this, less than inner circumferential region in the inner part (cylindrical region S) middle air turbulence at the blade of fan 20, the pressure oscillation that air-flow causes is also less.
The air carried by fan 20 passes through in wind path, and heat exchanger 50 is carried.Such as, when carrying out cooling operation, from refrigerant piping heat exchanger 50 refrigerant conveying be connected with off-premises station (not shown).The air that heat exchanger 50 is carried is become cold air, directly from blow-off outlet 3 to indoor releasing by the refrigerant cools of flowing in heat exchanger 50.
The suppressing method of the operating sound of indoor set 100 is identical with the method illustrated in embodiment 2, with make by noise/soundproof effect detect noise that microphone 211 detects close to zero mode export control sound, consequently, the action that restraint speckle/soundproof effect detects the noise in microphone 211 is carried out.
Like this, in present embodiment 6, in the indoor set 100 applying active sound reduction method, noise/soundproof effect is detected the scope being arranged in cylindrical region S that fixed part 17 is located at by microphone 211, thus directly do not conflict with air mobile phase, the situation pressure oscillation composition that air turbulence causes being detected can be reduced.Therefore, it is possible to detect the sound higher with the coherence of the operating sound of fan 20 and noise, higher soundproof effect can be obtained.
In addition, by noise/soundproof effect is detected the fixed part 17 that microphone 211 is installed on fan 20, noise/soundproof effect easily can be installed and detect microphone 211, and new parts count can not be increased, not need accurate installing mechanism.Further, by noise/soundproof effect is detected the fixed part 17 that microphone 211 is arranged at fan 20, the distance that fan 20 and noise/soundproof effect detect microphone 211 is shorter, thus can shorten the height of indoor set 100.
In addition, in present embodiment 6, noise/soundproof effect is detected microphone 211 and is arranged on fixed part 17, but the intrinsic mechanical oscillation that also there is the rotation with fan 20 and produce pass to noise/soundproof effect and detect microphone 211, noise/soundproof effect detection microphone 211 is caused the situation of this vibration to be detected.Therefore, soundproof effect is caused to reduce sometimes.In this case, also noise/soundproof effect detection microphone 211 can be arranged on the position beyond the fixed part 17 in cylindrical region S.Such as also according to shown in Figure 30, noise/soundproof effect can be detected microphone 211 and is arranged on the heat exchanger 50 of the scope being arranged in cylindrical region S.In addition, such as also according to shown in Figure 31, noise/soundproof effect can be detected microphone 211 and is arranged on below the heat exchanger fixed part 58 of the scope being arranged in cylindrical region S.Detecting microphone 211 by arranging noise/soundproof effect like this, and noise/soundproof effect being detected microphone 211 and be arranged on compared with the situation of fixed part 17, higher soundproof effect can be obtained.
In addition, also as shown in figure 32, wall components 270 can be utilized to cover noise/soundproof effect and to detect microphone 211.Owing to can intercept air-flow by wall components 270, noise/soundproof effect detects the impact that microphone 211 is not more vulnerable to air-flow, can obtain higher soundproof effect.Although wall components 270 is formed as roughly cylindric in Figure 32, the shape of wall components 270 can be arbitrary.In addition, when noise/soundproof effect being detected microphone 211 and being installed on heat exchanger 50 or heat exchanger fixed part 58, wall components 270 also can be utilized to cover noise/soundproof effect and to detect microphone 211.Thus noise/soundproof effect detects the impact that microphone 211 is not vulnerable to air-flow yet, can obtain higher soundproof effect.
Above, in the indoor set 100 of present embodiment 6, the noise/soundproof effect as noise/soundproof effect checkout gear detects microphone 211 and is located in cylindrical region S, and is located at the not dynamic component of fan 20.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, the parts count not increasing indoor set 100 can arrange noise/soundproof effect and detect microphone 211, thus can realize arranging the higher indoor set of the free degree 100.
In addition, in present embodiment 6, FIR filter 158 and LMS algorithm device 159 is employed in signal processing apparatus 204, as long as but make the Sound close by noise/soundproof effect detection microphone 211 detects can utilize in the self-adaptive signal processing circuit of zero the filtered-X algorithm usually adopted in active sound reduction method.In addition, signal processing apparatus 204 needs not be the structure of carrying out Adaptive Signal Processing, also can be to generate according to fixing tap coefficient the structure controlling sound.In addition, signal processing apparatus 204 needs not be digital signal processing circuit, also can be analog signal processing circuit.
In addition, in the indoor set 100 of present embodiment 6, the noise/soundproof effect as noise/soundproof effect checkout gear detects microphone 211 and is located in cylindrical region S, and is located at the downstream of fan 20.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of indoor set 100, noise/soundproof effect can be set and detect microphone 211, thus can realize arranging the higher indoor set of the free degree 100.The intrinsic mechanical oscillation produced along with the rotation of fan 20 are not detected because noise/soundproof effect detects microphone 211, thus with noise/soundproof effect is detected microphone 211 and is located at compared with the situation of the not dynamic component of fan 20, the higher active of precision can be carried out and eliminate the noise.
In addition, in the indoor set 100 of present embodiment 6, noise/soundproof effect detection microphone 211 is arranged on the scope being arranged in cylindrical region S in the fixed part 17 of fan 20.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of the parts count of air conditioner, noise/soundproof effect can be set and detect microphone 211, thus can realize arranging the higher indoor set of the free degree 100.
In addition, in the indoor set 100 of present embodiment 6, noise/soundproof effect detects the scope being arranged in cylindrical region S that microphone 211 is arranged on heat exchanger 50.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of the parts count of air conditioner, noise/soundproof effect can be set and detect microphone 211, thus can realize arranging the higher indoor set of the free degree 100.And, the intrinsic mechanical oscillation produced along with the rotation of fan 20 are not detected because noise/soundproof effect detects microphone 211, thus with noise/soundproof effect is detected microphone 211 and is located at compared with the situation of the not dynamic component of fan 20, the higher active of precision can be carried out and eliminate the noise.
In addition, in the indoor set 100 of present embodiment 6, noise/soundproof effect detects the scope being arranged in cylindrical region S that microphone 211 is arranged on heat exchanger fixed part 58.Therefore, it is possible to reduce the impact from the air-flow of the blow-off outlet of fan 20, the sound higher with the coherence of noise can be detected, thus can carry out high-precision active noise elimination.In addition, do not need the mechanism changing fan 20, do not increase the parts count of the parts count of air conditioner, noise/soundproof effect can be set and detect microphone 211, thus can realize arranging the higher indoor set of the free degree 100.And, the intrinsic mechanical oscillation produced along with the rotation of fan 20 are not detected because noise/soundproof effect detects microphone 211, thus with noise/soundproof effect is detected microphone 211 and is located at compared with the situation of the not dynamic component of fan 20, the higher active of precision can be carried out and eliminate the noise.
In addition, in the indoor set 100 of present embodiment 6, utilize wall components 270 to cover noise/soundproof effect and detect microphone 211.By intercepting air-flow, noise/soundproof effect detects the impact that microphone 211 is not more vulnerable to air-flow, thus can obtain higher soundproof effect.
Embodiment 7.
Such indoor set 100 is described in present embodiment 7, and this indoor set 100 detects microphone 211 on the top of blow-off outlet 3 to arrange noise/soundproof effect towards the mode with stream opposition side.In addition, in present embodiment 7, the not special project described is identical with embodiment 5 or embodiment 6, uses identical label to carry out describing to identical function or structure.
Figure 33 is the profilograph of the indoor set that embodiments of the present invention 7 are shown.The right side of figure illustrates as the front face side of indoor set 100 by this Figure 33.
The indoor set 100 of present embodiment 7 is with the difference of the indoor set 100 of embodiment 6, detects microphone 211 on the top of blow-off outlet 3 to configure noise/soundproof effect towards the mode with stream opposition side.Correspondingly the structure of signal processing apparatus 208 is also different.The top and stream rightabout of blow-off outlet 3 are installed noise/soundproof effect when detecting microphone 211, same with embodiment 6, do not increase new parts count, noise/soundproof effect easily can be installed and detect microphone 211, not need accurate installing mechanism.Export for the control loudspeaker 181 of the control sound of noise to be configured in the sidewall portion of the housing 1 of indoor set 100 towards the mode of wind path central authorities from wall.In addition, configure noise/soundproof effect on the top of blow-off outlet 3 in the mode of the opposition side towards stream and detect microphone 211, its detect the control sound that makes to export from control loudspeaker 181 interfere with the operating sound (noise) of indoor set 100 of the air-supply sound comprising fan 20 after sound.The output signal that noise/soundproof effect detects microphone 211 is imported into for generating control sound generating apparatus to the signal (control sound) that control loudspeaker 181 controls and signal processing apparatus 208.
Figure 34 illustrates the structure chart of signal processing apparatus 208.Be with the difference of the signal processing apparatus 204 shown in Figure 11, between the output and the input of LMS algorithm device 159 of A/D converter 152, be configured with weighted units 153.Structure beyond this is identical with the signal processing apparatus 204 of embodiment 2.
Then, the action of indoor set 100 is described.When indoor set 100 action, the impeller 25 of fan 20 rotates, the air on the upside of fan 20 in suction chamber, and carries air on the downside of fan 20, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20, produce operating sound (noise), this sound is propagated to downstream.Near the blow-off outlet of fan 20, same with embodiment 5 and embodiment 6, produce air turbulence due to the rotation of impeller 25.In addition, the air blown out from fan 20 blows out toward the outer side from the blow-off outlet of fan 20, thus bumps against the sidewall of the basket of indoor set 100, causes air turbulence further.Therefore, the pressure oscillation caused in the side-walls air turbulence of indoor set 100 increases.
But, in present embodiment 7, noise/soundproof effect detect microphone 211 be configured in blow-off outlet 3 top and towards the direction contrary with stream.Near blow-off outlet 3 compared with near fan 20, the distance to the blow-off outlet of the larger fan 20 of air turbulence is enough large.In addition, near blow-off outlet 3, heat exchanger 50 pairs of air turbulence carry out rectification.Therefore, the air turbulence that noise/soundproof effect detects near microphone 211 diminishes.In addition, air-flow does not directly impact and is provided with the region that noise/soundproof effect detects microphone 211, and thus noise/soundproof effect detects microphone 211 hardly by the impact of air turbulence.In addition, the noise from indoor set 100 that people feels is blown out to the noise behind indoor from blow-off outlet 3, thus namely indoor towards the opposition side of stream by making noise/soundproof effect detect microphone 211, can detect and be blown out to indoor noise.That is, by detecting microphone 211 on the top of blow-off outlet 3 towards installing noise/soundproof effect on the contrary with stream, the sound higher with being blown out to indoor noise coherence can be detected.
Then, the suppressing method of the operating sound of indoor set 100 is described.The generation method of the control sound of present embodiment 7 is identical with the method described in embodiment 2.The difference of the method described in the generation method of the control sound of present embodiment 7 and embodiment 2 is, is averaged the signal being input to LMS algorithm device 159 as error signal by weighted units 153.The direction that the top of blow-off outlet 3 is contrary with stream configures noise/soundproof effect detection microphone 211, detect at noise/soundproof effect in the noise of microphone 211 detection, comprise much from the sound beyond the noise of fan 20 generation.Therefore, the stability of FEEDBACK CONTROL is caused to be damaged by the sound beyond these noises.Therefore, in present embodiment 7, in the prime configuration weighted units 153 of FEEDBACK CONTROL, thus by the sound equalization beyond noise.Thereby, it is possible to eliminate the composition of the sound beyond incoherent noise, FEEDBACK CONTROL can be made stably to work.That is, can improve and be blown out to from blow-off outlet 3 coherence that the noise behind indoor and noise/soundproof effect detect microphone 211.
In addition, same with embodiment 5, also can be, before LMS algorithm device 159 is stable, be not weighted the equalization that unit 153 performs.This is because, fully can not reduce noise in LMS algorithm device 159 unstabilized period, there is the situation that the output valve of weighted units 153 is out of control.In addition, also can be set as resetting when the output valve of weighted units 153 exceedes certain value.In addition, in order to further not by the impact of air-flow, wall components 270 also can be utilized to cover noise/soundproof effect and to detect microphone 211.Due to air-flow can be intercepted by wall components, be not thus more vulnerable to the impact of air-flow, higher soundproof effect can be obtained.
In addition, the setting position of noise/soundproof effect detection microphone 211 is not limited to the top of blow-off outlet 3, as long as the opening portion of blow-off outlet 3.Such as also noise/soundproof effect can be detected bottom or the sidepiece that microphone 211 is arranged on blow-off outlet 3.In addition, noise/soundproof effect detects microphone 211 not to be needed to be set to the direction towards contrary with stream exactly.As long as towards indoor set 100(housing) arranged outside noise/soundproof effect detect microphone 211.That is, as long as noise/soundproof effect detects microphone 211 and is arranged on the position can detected and be output to indoor noise.
In addition, in present embodiment 7, FIR filter 158 and LMS algorithm device 159 is employed in signal processing apparatus 208, as long as but make the Sound close by noise/soundproof effect detection microphone 211 detects can utilize in the self-adaptive signal processing circuit of zero the filtered-X algorithm usually adopted in active sound reduction method.In addition, weighted units 153 needs not be integrator, as long as the unit that can average.In addition, signal processing apparatus 208 needs not be the structure of carrying out Adaptive Signal Processing, also can be to generate according to fixing tap coefficient the structure controlling sound.In addition, signal processing apparatus 208 needs not be digital signal processing circuit, also can be analog signal processing circuit.
Above, in the indoor set 100 of present embodiment 7, the noise/soundproof effect as noise/soundproof effect checkout gear is detected the opening portion that blow-off outlet 3 is located at by microphone 211, and configures towards the outside of indoor set 100.Therefore, it is possible to do not detect by the impact ground of air-flow the noise being output to indoor.Therefore, the room noise exported for machine 100 indoor and noise/soundproof effect detect the detection sound of microphone 211, can obtain higher coherence.Therefore, it is possible to carry out high-precision active noise elimination to the room noise that machine 100 exports indoor.
In addition, in the indoor set 100 of present embodiment 7, as the signal processing apparatus 208 controlling sound generating apparatus, there is following circuit, this circuit is weighted by the testing result that noise/soundproof effect detection microphone 211 detects as noise/soundproof effect checkout gear, and carries out FEEDBACK CONTROL.Therefore, it is possible to eliminate being averaged by the sound except the noise of indoor set 100 that noise/soundproof effect detection microphone 211 detects.Eliminate the noise therefore, it is possible to carry out the higher active of precision.In addition, in the indoor set 100 of present embodiment 7, utilize wall components 270 to cover noise/soundproof effect and detect microphone 211.By intercepting air-flow, noise/soundproof effect detects microphone 211 more not by the impact of air-flow, thus can obtain higher soundproof effect.
Embodiment 8.
(fan controls separately)
By controlling the rotating speed being located at each fan 20 of indoor set 100 individually, the soundproof effect of active noise elimination mechanism can be improved further.In addition, in present embodiment 8, identical label is used to carry out describing to the function identical with embodiment 1 ~ embodiment 7 or structure.
Figure 35 is the front view of the indoor set that embodiments of the present invention 8 are shown.In addition, Figure 36 is the side view that the indoor set shown in Figure 35 is shown.In addition, Figure 36 is the figure observing the indoor set 100 shown in Figure 35 from the direction of arrow being filled with oblique line of Figure 35, illustrates through the sidewall of the housing 1 of indoor set 100.In addition, in Figure 36, omit the diagram of the remote controller 280 shown in Figure 35, control device 281 and motor driver 282A ~ 282C.
Indoor set 100 shown in Figure 35 and Figure 36 at indoor set 100(more particularly, the housing 1 of indoor set 100) upper opening form suction inlet 2, at indoor set 100(more particularly, the housing 1 of indoor set 100) lower ending opening form blow-off outlet 3.That is, in indoor set 100, be formed with the wind path being communicated with suction inlet 2 and blow-off outlet 3.And the downside of the suction inlet 2 in wind path, is provided with multiple fan 20 with impeller 25 along left and right directions (length direction).In addition, in present embodiment 8, be provided with 3 fans (fan 20A ~ 20C).The rotating shaft center that these fans 20A ~ 20C is configured to impeller 25 becomes substantially vertical direction.These fans 20A ~ 20C is connected with the Air Blast fan control unit 171 of control device 281 via motor driver 282A ~ 282C respectively.In addition, control device 281 is described later in detail.
Be configured with heat exchanger 50 in the below of fan 20A ~ 20C, it carries out heat exchange to air and cools or heat.As shown in the hollow arrow of Figure 35, when fan 20A ~ 20C works, from suction inlet 2 to the air in the wind path suction chamber in indoor set 100, this suction air is cooled or heats by the heat exchanger 50 being positioned at fan 20A ~ 20C bottom, then from blow-off outlet 3 to indoor blowout.
In addition, the indoor set 100 of present embodiment 8 is provided with the noise elimination mechanism for active noise elimination.The noise elimination mechanism of the indoor set 100 of present embodiment 8 by noise sensing microphones 161,162, control loudspeaker 181,182, soundproof effect detects microphone 191,192 and signal processing apparatus 201,202 is formed.That is, the noise elimination mechanism of the indoor set 100 of present embodiment 8 has two noise sensing microphones, two control loudspeakers and two soundproof effects detection microphones.Below, the noise elimination mechanism be made up of noise sensing microphones 161, control loudspeaker 181, soundproof effect detection microphone 191 and signal processing apparatus 201 is set to noise elimination mechanism A.In addition, the noise elimination mechanism be made up of noise sensing microphones 162, control loudspeaker 182, soundproof effect detection microphone 192 and signal processing apparatus 202 is set to noise elimination mechanism B.
Noise sensing microphones 161,162 is noise detection apparatus of the operating sound (noise) of indoor set 100 for detecting the air-supply sound (noise from fan 20A ~ 20C sends) comprising fan 20A ~ 20C.Noise sensing microphones 161,162 is arranged on the position (such as, between fan 20A ~ 20C and heat exchanger 50) in the downstream being positioned at fan 20A ~ 20C.In addition, noise sensing microphones 161 is located at the left surface of indoor set 100, and noise sensing microphones 162 is located at the right flank of indoor set 100.
Control loudspeaker 181,182 exports the control voice output for the control sound of noise.Control loudspeaker 181,182 is arranged on the position (such as, the downstream of heat exchanger 50) in the downstream being positioned at noise sensing microphones 161,162.In addition, the left surface of indoor set 100 is located at by control loudspeaker 181, and the right flank of indoor set 100 is located at by control loudspeaker 182.Further, control loudspeaker 181,182 configures in the mode of the wall of the housing 1 of machine 100 indoor towards wind path central authorities.
Soundproof effect detects the soundproof effect checkout gear that microphone 191,192 is soundproof effects of detection control sound.Soundproof effect detects the position that microphone 191,192 is arranged on the downstream being positioned at control loudspeaker 181,182.In addition, soundproof effect detects microphone 191 and is arranged on the roughly extended line of the rotating shaft of such as fan 20A, and soundproof effect detects microphone 192 and is arranged on the roughly extended line of the rotating shaft of such as fan 20C.In addition, in present embodiment 8, the nozzle 6 forming blow-off outlet 3 is provided with soundproof effect and detects microphone 191,192.That is, soundproof effect detects microphone 191,192 and detects the noise spread out of from blow-off outlet 3, detects soundproof effect.
The structure of signal processing apparatus 201,202 is identical with the structure shown in the Fig. 8 illustrated in embodiment 1.
Figure 37 is the structure chart of the control device that embodiments of the present invention 8 are shown.
The various action below illustrated and unit are undertaken by performing the program of installing in the control device 281 that has at indoor set 100.Control device 281 mainly having input part 130 for inputting the signal from external input device such as remote controllers 280, carrying out the CPU131 of computing and the memory 132 for storing data and/or program according to the program of installing.In addition, CPU131 has Air Blast fan control unit 171.
Air Blast fan control unit 171 has same rotational speed determining means 133, fan and controls separately rotating speed determining means 134 and multiple SW135(quantity is identical with fan 20).Same rotational speed determining means 133, according to the operation information inputted from remote controller 280, determines to make fan 20A ~ 20C all with rotating speed during identical rotary speed working.The operation information inputted from remote controller 280 is such as cooling operation pattern, heating mode of operation and operation mode information such as dehumidifying operation mode etc., or by force, in, the air quantity information such as weak.Fan controls separately the every speed that rotating speed determining means 134 determines when controlling the rotating speed of fan 20A ~ 20C individually.SW 135, according to the signal inputted from such as remote controller 280, switches the rotation control signal of the fan 20A ~ 20C carried to motor driver 282A ~ 282C.That is, SW 135 makes fan 20A ~ 20C all with identical rotary speed working for switching to, or makes fan 20A ~ 20C with rotary speed working independent separately.
Then, the action of indoor set 100 is described.
When indoor set 100 action, the impeller of fan 20A ~ 20C rotates, the air in the upside suction chamber of fan 20A ~ 20C, and carries air on the downside of fan 20A ~ 20C, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20A ~ 20C, produce operating sound (noise), this sound is propagated to downstream.The air carried by fan 20A ~ 20C passes through in wind path, and heat exchanger 50 is carried.Such as, when carrying out cooling operation, from the cold-producing medium of pipe arrangement heat exchanger 50 transporting low temperature be connected with off-premises station (not shown).The air that heat exchanger 50 is carried is become cold air by the refrigerant cools of flowing in heat exchanger 50, directly sends from blow-off outlet 3 to indoor.
In addition, noise elimination mechanism A is identical with embodiment 1 with the action of noise elimination mechanism B, with make by soundproof effect detect noise that microphone 191,192 detects close to zero mode export control sound, consequently, carry out suppressing soundproof effect to detect the action of the noise in microphone 191,192.
In active sound reduction method, become the mode with noise opposite phase with the setting position (control point) detecting microphone 191,192 at soundproof effect, export from control loudspeaker 181,182 and control sound.Therefore, detect near microphone 191,192 at soundproof effect, soundproof effect improves, but when changing away from the phase place controlling sound time this.Therefore, detecting with soundproof effect the position that microphone 191,192 leaves distance, noise increases with the phase deviation controlling sound, causes soundproof effect to reduce.
Then, the control method (controlling separately hereinafter also referred to as fan) of the rotating speed controlling fan 20A ~ 20C is individually described.
The operation information selected by remote controller 280 is imported into control device 281.Operation information is the operation mode information such as such as cooling operation pattern, heating mode of operation and dehumidifying operation mode.In addition, strong, in, the air quantity information such as weak too, input to control device 281 from remote controller 280 as operation information.The operation information being imported into control device 281 is imported into same rotational speed determining means 133 via input part 130.Be transfused to the same rotational speed determining means 133 of operation information according to inputted operation information, determined to make fan 20A ~ 20C all with rotating speed during identical rotary speed working.When not carrying out fan and controlling separately, all control fan 20A ~ 20C(with identical rotating speed and control hereinafter also referred to as same rotational speed).
The information of the rotating speed (rotating speed when same rotational speed controls) determined by same rotational speed determining means 133 is input to fan and controls separately rotating speed determining means 134.On the other hand, control separately in rotating speed determining means 134 at fan, when reading product export, be stored in advance in the Air Blast fan information in memory 132.This Air Blast fan information exports the information making the fan 20 of the noise that soundproof effect during control interference of sound is higher.That is, this Air Blast fan information detects the information of the higher fan 20 of microphone 191,192 relevance.These identification numbers detect microphone according to each soundproof effect and distribute.In present embodiment 8, as Air Blast fan information, use the identification number detecting the fan 20 of microphone 191,192 nearest (relevance is high) with soundproof effect.Specifically, be detect with soundproof effect the nearest fan 20A of microphone 191 identification number and detect the identification number of the nearest fan 20C of microphone 192 with soundproof effect.
Fan controls separately rotating speed determining means 134 according to the rotary speed information determined by same rotational speed determining means 133 and the Air Blast fan information read from memory 132, determines the rotating speed of each fan 20 carried out when fan controls separately.Specifically, fan controls separately rotating speed determining means 134 and improves the rotating speed detecting microphone 191,192 nearest fan 20A, 20C with soundproof effect, and reduces the rotating speed of the fan 20B away from soundproof effect detection microphone 191,192.Now, also can be that the mode of air quantity identical when controlling with same rotational speed to make the air quantity carrying out obtaining when fan controls separately become, determines the rotating speed of each fan 20A ~ 20C.Because air quantity and rotating speed have proportionate relationship, when the structure that thus such as Figure 35 is such, by the rotating speed of fan 20A and fan 20C is improved 10%, and the rotating speed of fan 20B is reduced by 20% thus obtains identical air quantity.
When have input movement information signal (signal such as such as silent mode) that will carry out fan and control separately from remote controller 280, by switching SW 135, the rotation control signal controlled from same rotational speed switches to the rotation control signal that fan controls separately, and is exported from control device 281 to fan 20A ~ 20C by this rotation control signal.The rotation control signal exported from control device 281 is imported into motor driver 282A ~ 282C, and controlling fan 20A ~ 20C becomes the rotating speed corresponding to rotation control signal.
As mentioned above, when carrying out active noise elimination, the soundproof effect that soundproof effect as the control point of Noise measarement detects microphone 191,192 and periphery thereof improves, but in the position away from control point, the control sound exported from control loudspeaker 181,182 and the phase deviation of noise increase, and cause soundproof effect to reduce.But, for having the structure of multiple fan 20A ~ 20C in indoor set 100 in present embodiment 8, thus can improve the soundproof effect higher with soundproof effect and detect microphone 191,192 exports the higher noise of soundproof effect fan apart near fan 20A, 20C() rotating speed, and reduce the fan that the fan 20B(detecting microphone 191,192 away from soundproof effect exports the lower noise of soundproof effect) rotating speed.
Consequently, indoor set 100 soundproof effect in the region that soundproof effect is higher of present embodiment 8 improves further, in the region that soundproof effect is lower, noise reduces, thus with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.In addition, controlled the rotating speed of multiple fan 20A ~ 20C by the mode certain with air quantity, can also realize not reducing aeroperformance.
In addition, as shown in Figure 38 and Figure 39, by the wind path of indoor set 100 is divided into multiple region, soundproof effect can be improved further.
Figure 38 is the front view of another example of the indoor set that embodiments of the present invention 8 are shown.In addition, Figure 39 is the left side view of the indoor set shown in Figure 38.In addition, Figure 39 illustrates through the sidewall of the housing 1 of indoor set 100.Indoor set 100 dividing plate 90 shown in Figure 38 and Figure 39,90a split wind path, the region that the air that the region that the air being divided into fan 20A blowout thus passes through, fan 20B blow out passes through and the region that the air that fan 20C blows out passes through.And the noise sensing microphones 161 of noise elimination mechanism A, control loudspeaker 181 and soundproof effect detect microphone 191 and are configured in the region that air that fan 20A blows out passes through.In addition, the noise sensing microphones 162 of noise elimination mechanism B, control loudspeaker 182 and soundproof effect detect microphone 192 and are configured in the region that air that fan 20C blows out passes through.
By forming indoor set 100 like this, can by the noise separation that sends from fan 20A ~ 20C in regional, noise elimination mechanism A only reduces the noise sent from fan 20A, and noise elimination mechanism B only reduces the noise sent from fan 20C.Therefore, can prevent noise sensing microphones 161,162 and soundproof effect from detecting microphone 191,192 and detect the noise sent from fan 20B, thus noise sensing microphones 161,162 and soundproof effect detect the crosstalk noise composition reduction of microphone 191,192.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.On the other hand, reduce the rotating speed not arranging the fan 20B of noise elimination mechanism, thus, the noise not arranging the region of noise elimination mechanism reduces.Therefore, by forming indoor set 100 as Figure 38 and Figure 39, compared with the structure of Figure 35, noise can be reduced further.In addition, in Figure 38 and Figure 39, in the whole region of wind path, insert dividing plate, but such as also can only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.
In addition, in present embodiment 8, by the two sides of noise sensing microphones 161,162 machine 100 disposed in the interior, as long as but the upstream side of control loudspeaker 181,182, the setting position of noise sensing microphones 161,162 can be any position.In addition, in present embodiment 8, by the two sides of control loudspeaker 181,182 machine 100 disposed in the interior, as long as but the downstream of noise sensing microphones 161,162 and be that soundproof effect detects the upstream side of microphone 191,192, the setting position of control loudspeaker 181,182 can be any position.In addition, in present embodiment 8, soundproof effect being detected microphone 191,192 is configured on the roughly extended line of the rotating shaft of fan 20A, 20C, as long as but the downstream of control loudspeaker 181,182, then soundproof effect detects the setting position of microphone 191,192 can be any position.In addition, in present embodiment 8, configure two noise sensing microphones, control loudspeaker, soundproof effect detection microphone and signal processing apparatus respectively, but quantity is not limited thereto.
In addition, in present embodiment 8, form Air Blast fan control unit 171 by the CPU 131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 171.In addition, the structure of Air Blast fan control unit 171 is also not limited to the structure shown in Figure 37.
In addition, in present embodiment 8, Air Blast fan control unit 171 is configured to, improve and detect the rotating speed of microphone 191,192 apart near fan 20A, 20C with soundproof effect, further, reduce the rotating speed of the fan 20B of distance, but also can be configured to only carry out a side wherein.
Above, in the indoor set 100 of present embodiment 8, configure multiple fan 20A ~ 20C, and the control device 281(arranging the rotating speed controlling fan 20A ~ 20C is individually more particularly Air Blast fan control unit 171).Air Blast fan control unit 171 controls, to improve the rotating speed of fan 20A, 20C of detecting the region air-supply near microphone 191,192 to the higher region of soundproof effect and soundproof effect, and carry out rotating speed control, to reduce to the lower region of soundproof effect the rotating speed of fan 20B that i.e. distance soundproof effect detects microphone 191,192 region air-supplies far away.Therefore, the region soundproof effect that soundproof effect is higher improves further, and the noise region that soundproof effect is lower reduces.Therefore, with in mutually isostructural noise elimination mechanism, use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, higher noise reduction can being obtained.
In addition, Air Blast fan control unit 171 controls fan 20A ~ 20C rotating speed separately, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, can make each self-separation of noise sent from fan 20A ~ 20C, noise elimination mechanism A only reduces the noise sent from fan 20A, and noise elimination mechanism B only reduces the noise sent from fan 20C.Therefore, the crosstalk noise composition that the noise sent from fan 20B causes reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced.In addition, reduce the rotating speed not arranging the fan 20B of noise elimination mechanism, the noise not arranging the region of noise elimination mechanism thus reduces, and compared with the structure of Figure 35, can obtain higher noise reduction.
Embodiment 9.
Be not limited to the structure of embodiment 8, also can detect according to soundproof effect the soundproof effect that microphone detects and carry out fan and control separately.In addition, in present embodiment 9, by with the difference of above-mentioned embodiment 8 centered by be described, identical label is marked to the part identical with embodiment 8.
Figure 40 is the front view of the indoor set of embodiments of the present invention 9.
The indoor set 100 of present embodiment 9 is with the difference of the indoor set 100 of embodiment 8, is provided with noise elimination mechanism C(noise sensing microphones 163, control loudspeaker 183, soundproof effect detection microphone 193 and signal processing apparatus 203).The structure of signal processing apparatus 203 and signal processing apparatus 201,202 identical.In addition, the installation site that noise sensing microphones 163, control loudspeaker 183 and soundproof effect detect microphone 193 is identical with embodiment 8, sets gradually noise sensing microphones 163, control loudspeaker 183 and soundproof effect detect microphone 193 from the downstream of fan 20B
In addition, be also provided with the holding wire (holding wire of conveying signal S1, S2, S3) connected from signal processing apparatus 201 ~ 203 to Air Blast fan control unit 172, this point is also different from the indoor set 100 of embodiment 8.Therefore, the structure of Air Blast fan control unit 172 is also different from the structure of the Air Blast fan control unit 171 of embodiment 8.Specifically, signal from signal processing apparatus 201 ~ 203 to Air Blast fan control unit 172 S1, S2, S3 of carrying from detect from soundproof effect the signal that microphone 191 ~ 193 inputs to be carried out the signal after digital translation via microphone amplifier 151 by A/D converter 152.That is, signal S1, S2, S3 is the digital value being detected the sound pressure level that microphone 191 ~ 193 detects by soundproof effect.
Then, the structure of Air Blast fan control unit 172 is described.
Figure 41 is the structure chart of the control device that embodiments of the present invention 9 are shown.The various action below illustrated and unit, undertaken by performing the program of installing in the control device 281 that has of indoor set 100.Identical with the structure described in embodiment 8, control device 281 mainly have input from the input part 130 of the signal of the external input device such as remote controller 280, to carry out the CPU 131 of computing according to the program of installing and store the memory 132 of data or program.In addition, CPU 131 has Air Blast fan control unit 172.
It is identical that Air Blast fan control unit 172 has same rotational speed determining means 133, multiple equalization unit 136(quantity and soundproof effect detect microphone), fan controls separately rotating speed determining means 134A and multiple SW 135(quantity is identical with fan 20).Same rotational speed determining means 133, according to the operation information inputted from remote controller 280, determines rotating speed when fan 20A ~ 20C is all worked with same rotational speed.The operation information inputted from remote controller 280 is such as cooling operation pattern, heating mode of operation and operation mode information such as dehumidifying operation mode etc., or by force, in, the air quantity information such as weak.Equalization unit 136 is detected digital value S1, S2, S3 of the sound pressure level that microphone 191 ~ 193 detects by soundproof effect for inputting, and average according to a certain set time the signal of these S1, S2, S3.
Fan controls separately rotating speed determining means 134A according to each signal by S1, S2, the S3 after equalization unit 136 equalization and the rotary speed information that inputs from same rotational speed determining means 133, determines the respective rotating speed carrying out when fan controls separately to fan 20A ~ 20C.SW135, such as according to the signal inputted from remote controller 280, switches the rotation control signal of the fan 20A ~ 20C carried to motor driver 282A ~ 282C.That is, SW 135 makes fan 20A ~ 20C all with identical rotary speed working (carrying out same rotational speed control) for switching, or makes fan 20A ~ 20C with respective independently rotary speed working (carrying out fan to control separately).
Then, the action of indoor set 100 is described.
Identical with embodiment 8, when indoor set 100 action, the impeller of fan 20A ~ 20C rotates, the air in the upside suction chamber of fan 20A ~ 20C, and carries air on the downside of fan 20A ~ 20C, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20A ~ 20C, produce operating sound (noise), this sound is propagated to downstream.The air carried by fan 20A ~ 20C passes through in wind path, and heat exchanger 50 is carried.Such as, when carrying out cooling operation, from the cold-producing medium of pipe arrangement heat exchanger 50 transporting low temperature be connected with off-premises station (not shown).The air that heat exchanger 50 is carried is become cold air, directly from blow-off outlet 3 to indoor releasing by the refrigerant cools of flowing in heat exchanger 50.
In addition, the action of noise elimination mechanism A ~ C is identical with embodiment 8, with make by soundproof effect detect the noise that detects of microphone 191 ~ 193 close to zero mode export control sound, consequently, carry out suppressing soundproof effect to detect the action of the noise in microphone 191 ~ 193.
In addition, present embodiment 9 indoor set 100 when, except the noise sent from fan 20B, the noise (crosstalk noise composition) sent from adjacent fan 20A, 20C also enters soundproof effect and detects microphone 193.On the other hand, by soundproof effect detect crosstalk noise composition that microphone 191,192 detects with detected by soundproof effect compared with crosstalk noise composition that microphone 193 detects little.Because soundproof effect detection microphone 191,192 only has an adjacent fan 20(fan 20B).Therefore, compared with noise elimination mechanism C, the soundproof effect of noise elimination mechanism A, B is high.
Then, control separately to be described to the fan of the fan 20A ~ 20C of present embodiment 9.
The operation information utilizing remote controller 280 to select is imported into control device 281.As mentioned above, operation information is the operation mode information such as such as cooling operation pattern, heating mode of operation and dehumidifying operation mode.In addition, strong, in, the air quantity information such as weak too, input to control device 281 from remote controller 280 as operation information.The operation information being imported into control device 281 is imported into same rotational speed determining means 133 via input part 130.The same rotational speed determining means 133 that have input operation information according to inputted operation information, determine to fan 20A ~ 20C carry out same rotational speed control time rotating speed.
On the other hand, the S1 ~ S3(inputted from signal processing apparatus 201 ~ 203 to equalization unit 136 detects by soundproof effect the digital value of sound pressure level that microphone 191 ~ 193 detects) be averaged unit 136 and average according to a certain fixing period.
The information averaging the sound pressure level value obtained and the rotating speed determined by same rotational speed determining means 133 (rotating speed when same rotational speed controls) respectively to these S1 ~ S3 is imported into fan and controls separately rotating speed determining means 134A.Fan controls separately rotating speed determining means 134A according to these information, determines the rotating speed of each fan 20 carried out when fan controls separately.Specifically, determine the rotating speed of fan as follows, improve with equalization after sound pressure level value less soundproof effect detects the rotating speed of microphone apart near (relevance is higher) fan, and to reduce and soundproof effect that sound pressure level value after equalization is larger detects the rotating speed of microphone apart near (relevance is higher) fan.Now, also can be, the mode of air quantity identical when controlling with same rotational speed to make the air quantity carrying out obtaining when fan controls separately become determine fan 20A ~ 20C rotating speed separately.
Such as, in the indoor set 100 of present embodiment 9,45dB being detected the mean value of noise level that microphone 191 detects by soundproof effect, the mean value being detected the noise level that microphone 192 detects by soundproof effect is 45dB, and when the mean value of the noise level detected by soundproof effect detection microphone 193 is 50dB, fan controls separately rotating speed determining means 134A to improve the rotating speed of fan 20A, 20C, and the mode lowering the rotating speed of fan 20B determines the rotating speed of each fan 20.Air quantity and rotating speed have proportionate relationship, thus such as when the structure that Figure 40 is such, by the rotating speed of fan 20A and fan 20C is improved 10%, and the rotating speed of fan 20B reduction by 20% are obtained identical air quantity.
In addition, the determining method of the rotating speed of above-mentioned fan 20A ~ 20C is only an example.Such as, 45dB being detected the mean value of noise level that microphone 191 detects by soundproof effect, the mean value being detected the noise level that microphone 192 detects by soundproof effect is 47dB, and when the mean value of the noise level detected by soundproof effect detection microphone 193 is 50dB, also can be, with improve fan 20A rotating speed, reduce fan 20B rotating speed and maintain the mode of the rotating speed of fan 20C, determine the rotating speed of each fan 20.Namely, also can be, the rotating speed of microphone 191 apart near fan 20A is detected with the soundproof effect that the noise level improved with detect is minimum, reduce the soundproof effect maximum with the noise level detected and detect the rotating speed of microphone 193 apart near fan 20B, and maintain the mode not belonging to the rotating speed of the fan 20C of above situation, determine the rotating speed of each fan 20.
When have input movement information signal (signals of such as silent mode etc.) that will carry out fan and control separately from remote controller 280, by switching SW135, the rotation control signal controlled from same rotational speed switches to the rotation control signal that fan controls separately, and is exported from control device 281 to fan 20A ~ 20C by this rotation control signal.The rotation control signal exported from control device 281 is imported into motor driver 282A ~ 282C, controls fan 20A ~ 20C for the rotating speed corresponding to rotation control signal.
At this, as mentioned above, when indoor set 100 of present embodiment 9, due to the size of the crosstalk noise composition from adjacent fan, compared with detecting the region near microphone 193 with soundproof effect, the region soundproof effect that soundproof effect detects near microphone 191,192 is higher.That is, present embodiment 9 indoor set 100 when, compared with detecting the region near microphone 193 with soundproof effect, the noise level that soundproof effect detects the region detection near microphone 191,192 reduces.On the other hand, the region soundproof effect that soundproof effect detects near microphone 193 reduces.Therefore, in the indoor set 100 of present embodiment 9 with multiple fan 20A ~ 20C, detected in the mean value of the noise level value that microphone 191 ~ 193 detects by soundproof effect, improve the soundproof effect less with the noise level mean value detected and detect the rotating speed of microphone 191,192 apart near fan 20A, 20C, reduce the soundproof effect larger with the noise level mean value detected and detect the rotating speed of microphone 193 apart near fan 20B.
Consequently, the indoor set 100 of present embodiment 9 improves further at the region soundproof effect that soundproof effect is higher, the noise region lower at soundproof effect reduces, thus with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.
In addition, as shown in Figure 42 and Figure 43, by the wind path of indoor set 100 is divided into multiple region, soundproof effect can be improved further.
Figure 42 is the front view of another example of the indoor set that embodiments of the present invention 9 are shown.In addition, Figure 43 is the left side view of the indoor set shown in Figure 42.In addition, Figure 43 illustrates through the sidewall of the housing 1 of indoor set 100.Indoor set 100 dividing plate 90 shown in Figure 42 and Figure 43,90a split wind path, the region that the air that the region that the air being divided into fan 20A blowout thus passes through, fan 20B blow out passes through and the region that the air that fan 20C blows out passes through.And the noise sensing microphones 161 of noise elimination mechanism A, control loudspeaker 181 and soundproof effect detect microphone 191 and are configured in the region that air that fan 20A blows out passes through.In addition, the noise sensing microphones 162 of noise elimination mechanism B, control loudspeaker 182 and soundproof effect detect microphone 192 and are configured in the region that air that fan 20C blows out passes through.In addition, the noise sensing microphones 163 of noise elimination mechanism C, control loudspeaker 183 and soundproof effect detect microphone 193 and are configured in the region that air that fan 20B blows out passes through.
By forming indoor set 100 like this, can by the noise separation that sends from fan 20A ~ 20C in regional, noise elimination mechanism A only reduces the noise sent from fan 20A, and noise elimination mechanism B only reduces the noise sent from fan 20C, and noise elimination mechanism C only lowers the noise sent from fan 20B.Therefore, noise sensing microphones 161 ~ 163 and soundproof effect detect crosstalk noise composition (noise from the fan the being located at adjacent stream sends) reduction that microphone 191 ~ 193 detects.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.Therefore, by forming indoor set 100 as Figure 42 and Figure 43, compared with the structure of Figure 40, noise can be reduced further.In addition, in Figure 42 and Figure 43, in the whole region of wind path, insert dividing plate, but such as also can only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.In addition, same with embodiment 8, even if exist as shown in Figure 44 noise elimination mechanism is not set fan 20(in Figure 44, noise elimination mechanism C is not arranged to fan 20B) when, by reducing the rotating speed of this fan 20, also can reduce the noise in the region that noise elimination mechanism is not set, same soundproof effect can be obtained.
In addition, as long as the setting position of noise sensing microphones 161 ~ 163 is at the upstream side of control loudspeaker 181 ~ 183.In addition, as long as the setting position of control loudspeaker 181 ~ 183 detects the upstream side of microphone 191 ~ 193 in the downstream of noise sensing microphones 161 ~ 163 at soundproof effect.In addition, in present embodiment 9, soundproof effect is detected microphone 191 ~ 193 to be configured on the roughly extended line of the rotating shaft of fan 20A ~ 20C, as long as but the downstream of control loudspeaker 181 ~ 183, the setting position that soundproof effect detects microphone 191 ~ 193 can be optional position.In addition, in present embodiment 9, configure 2 ~ 3 noise sensing microphones, control loudspeaker, soundproof effect detection microphone and signal processing apparatus respectively, but be not limited to this quantity.
In addition, in present embodiment 9, form Air Blast fan control unit 172 by the CPU 131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 172.In addition, the structure of Air Blast fan control unit 172 is also not limited to the structure shown in Figure 41.
In addition, in present embodiment 9, Air Blast fan control unit 172 is configured to, improve the soundproof effect less with noise level and detect the rotating speed of microphone 191,192 apart near fan 20A, 20C, and, reduce the soundproof effect larger with noise level and detect the rotating speed of microphone 193 apart near fan 20B, but also can be configured to only carry out a side wherein.
Above, in the indoor set 100 of present embodiment 9, configure multiple fan 20A ~ 20C, and the control device 281(arranging the rotating speed controlling fan 20A ~ 20C is individually more particularly Air Blast fan control unit 172).Air Blast fan control unit 172 controls, make detected in the mean value of the noise level that microphone 191 ~ 193 detects by soundproof effect, improve the soundproof effect less with the noise level that detects and detects the rotating speed of microphone apart near fan, and to reduce and soundproof effect that the noise level that detects is larger detects the rotating speed of microphone apart near fan.Therefore, (that is, noise level is less) region soundproof effect that soundproof effect is higher improves further, and (namely noise level is larger) noise region that soundproof effect is lower reduces.Therefore, with use the indoor set of single fan in mutually isostructural noise elimination mechanism or do not carry out compared with indoor set that fan controls separately, noise to be reduced further.
In addition, Air Blast fan control unit 172 controls fan 20A ~ 20C rotating speed separately, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, the each self-separation of noise sent from fan 20A ~ 20C can be made, noise elimination mechanism A only reduces the noise sent from fan 20A, noise elimination mechanism B only reduces the noise sent from fan 20C, and noise elimination mechanism C only reduces the noise sent from fan 20B.Therefore, in each region, the crosstalk noise composition caused by the noise outputting to neighboring region reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, thus compared with the structure of Figure 40, higher noise reduction can be obtained.In addition, even if when having do not arrange noise elimination mechanism fan 20 as shown in Figure 44, by reducing the rotating speed of this fan 20, also can reduce the noise in the region that noise elimination mechanism is not set, same soundproof effect can be obtained.
Embodiment 10.
When carrying out fan according to the soundproof effect of soundproof effect detection microphone detection and controlling separately, such as, can carry out fan as described below and control separately.In addition, in present embodiment 10, by with the difference of above-mentioned embodiment 8 or embodiment 9 centered by be described, identical label is marked to the part identical with embodiment 8 or embodiment 9.
Figure 45 is the front view of the indoor set that embodiments of the present invention 10 are shown.
The indoor set 100 of present embodiment 10 is with the difference of the indoor set 100 of embodiment 9, is also provided with the holding wire (holding wire of conveying signal T1, T2, T3) connected from signal processing apparatus 201 ~ 203 to Air Blast fan control unit 173.Therefore, the structure of Air Blast fan control unit 173 is also different from the structure of the Air Blast fan control unit 172 of embodiment 9.Specifically, same with embodiment 9, signal from signal processing apparatus 201 ~ 203 to Air Blast fan control unit 173 S1, S2, S3 of carrying from detect from soundproof effect the signal that microphone 191 ~ 193 inputs to be carried out the signal after digital translation via microphone amplifier 151 by A/D converter 152.That is, signal S1, S2, S3 is the digital value being detected the sound pressure level that microphone 191 ~ 193 detects by soundproof effect.In addition, new signal T1, T2, T3 added is that the signal that inputs from noise sensing microphones 161 ~ 163 is carried out the signal after digital translation via microphone amplifier 151 by A/D converter 152.That is, signal T1, T2, T3 is the digital value of the sound pressure level detected by noise sensing microphones 161 ~ 163.
Then, the structure of Air Blast fan control unit 173 is described.
Figure 46 is the structure chart of the control device that embodiments of the present invention 10 are shown.The various action below illustrated and unit, undertaken by performing the program of installing in the control device 281 that has at indoor set 100.Identical with the structure described in embodiment 9, control device 281 mainly having input part 130 for inputting the signal from external input device such as remote controllers 280, carrying out the CPU 131 of computing and the memory 132 for storing data or program according to the program of installing.In addition, CPU 131 has Air Blast fan control unit 173.
It is identical that Air Blast fan control unit 173 has same rotational speed determining means 133, multiple coherence arithmetic element 137(quantity and soundproof effect detect microphone), fan controls separately rotating speed determining means 134B and multiple SW135(quantity is identical with fan 20).Same rotational speed determining means 133, according to the operation information inputted from remote controller 280, determines to make fan 20A ~ 20C all with rotating speed during identical rotary speed working.The operation information inputted from remote controller 280 is such as cooling operation pattern, heating mode of operation and operation mode information such as dehumidifying operation mode etc., or by force, in, the air quantity information such as weak.Coherence's arithmetic element 137 inputs digital value T1, T2, T3 of being detected the digital value S1 of the sound pressure level that detects of microphone 191 ~ 193, S2, S3 and the sound pressure level that detected by noise sensing microphones 161 ~ 163 by soundproof effect.The coherence of coherence's arithmetic element 137 couples of S1 and T1, S2 and T2 and S3 and T3 carries out computing.
Fan controls separately rotating speed determining means 134B according to the coherent value by coherence's arithmetic element 137 computing and the rotary speed information that inputs from same rotational speed determining means 133, determines the rotating speed carrying out when fan controls separately separately to fan 20A ~ 20C.SW135, such as according to the signal inputted from remote controller 280, switches the rotation control signal of the fan 20A ~ 20C carried to motor driver 282A ~ 282C.That is, SW135 is to making fan 20A ~ 20C all with identical rotary speed working (carrying out same rotational speed control), or fan 20A ~ 20C is switched with various independent rotary speed working (carrying out fan to control separately).
Then, the action of indoor set 100 is described.
Same with embodiment 9, when indoor set 100 action, the impeller of fan 20A ~ 20C rotates, the air in the upside suction chamber of fan 20A ~ 20C, and carries air on the downside of fan 20A ~ 20C, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20A ~ 20C, produce operating sound (noise), this sound is propagated to downstream.The air carried by fan 20A ~ 20C passes through in wind path, and heat exchanger 50 is carried.Such as, when carrying out cooling operation, from the cold-producing medium of pipe arrangement heat exchanger 50 transporting low temperature be connected with off-premises station (not shown).The air that heat exchanger 50 is carried is become cold air, directly from blow-off outlet 3 to indoor releasing by the refrigerant cools of flowing in heat exchanger 50.
In addition, the action of noise elimination mechanism A ~ C is also identical with embodiment 9, carries out following action: with make by soundproof effect detect noise that microphone 191 ~ 193 detects close to zero mode export and control sound and suppress soundproof effect to detect noise in microphone 191 ~ 193 as a result.
Usually, the coherent value that noise sensing microphones 161 ~ 163 and soundproof effect detect microphone 191 ~ 193 affects very large on the soundproof effect of active noise elimination.That is, if to detect the coherence of microphone 191 ~ 193 not high for noise sensing microphones 161 ~ 163 and soundproof effect, then soundproof effect cannot be expected.On the contrary, the coherent value that also can detect microphone 191 ~ 193 according to noise sensing microphones 161 ~ 163 and soundproof effect predicts soundproof effect.
Therefore, the indoor set 100(of present embodiment 10 is more particularly the Air Blast fan control unit 173 of control device 281) coherent value of microphone 191 ~ 193 is detected according to noise sensing microphones 161 ~ 163 and soundproof effect, improve the rotating speed being presumed to the fan in the higher region of soundproof effect, and reduce the mode being presumed to the rotating speed of the fan in the lower region of soundproof effect, control the rotating speed of fan 20A ~ 20C.
Then, control separately to be described to the fan of the fan 20A ~ 20C of present embodiment 10.
The operation information selected by remote controller 280 is imported into control device 281.As mentioned above, operation information is the operation mode information such as such as cooling operation pattern, heating mode of operation and dehumidifying operation mode.In addition, strong, in, the air quantity information such as weak too, input to control device 281 from remote controller 280 as operation information.The operation information being imported into control device 281 is imported into same rotational speed determining means 133 via input part 130.The same rotational speed determining means 133 that have input operation information according to inputted operation information, determine to fan 20A ~ 20C carry out same rotational speed control time rotating speed.
On the other hand, about the digital value S1 ~ S3 being detected the sound pressure level that microphone 191 ~ 193 detects by soundproof effect inputted from signal processing apparatus 201 ~ 203, with the digital value T1 ~ T3 of the sound pressure level detected by noise sensing microphones 161 ~ 163, coherence's arithmetic element 137 is utilized to obtain coherent value between each microphone.
The coherent value calculated by coherence's arithmetic element 137 and the information of rotating speed while controlling (same rotational speed rotating speed) determined by same rotational speed determining means 133, be imported into fan and control separately rotating speed determining means 134B.Fan controls separately rotating speed determining means 134B according to these information, determines the rotating speed of each fan carried out when fan controls separately.Specifically, the rotating speed of microphone apart near (relevance is higher) fan is detected to improve the soundproof effect higher with coherent value, and reduce and detects the mode of microphone apart from the rotating speed of near (relevance is higher) fan with coherent value lower soundproof effect, the rotating speed of decision fan.Now, also can be, with the air quantity carrying out obtaining when fan controls separately become control with same rotational speed time identical air quantity mode, determine the respective rotating speed of fan 20A ~ 20C.
Such as, in the indoor set 100 of present embodiment 10, when noise sensing microphones 161 and the soundproof effect coherent value detected between microphone 191 be 0.8, noise sensing microphones 162 and the soundproof effect coherent value detected between microphone 192 be 0.8 and noise sensing microphones 163 and the soundproof effect coherent value detected between microphone 193 are 0.5, fan controls separately rotating speed determining means 134B to improve the rotating speed of fan 20A, 20C, and reduce the mode of the rotating speed of fan 20B, determine the rotating speed of each fan.Air quantity and rotating speed have proportionate relationship, when the structure that thus such as Figure 45 is such, the rotating speed of fan 20A and fan 20C are improved 10%, and the rotating speed of fan 20B is reduced by 20%, obtain identical air quantity thus.
In addition, the determining method of the rotating speed of above-mentioned fan 20A ~ 20C is only an example.Such as, when noise sensing microphones 161 and the soundproof effect coherent value detected between microphone 191 be 0.8, noise sensing microphones 162 and the soundproof effect coherent value detected between microphone 192 be 0.7 and noise sensing microphones 163 and the soundproof effect coherent value detected between microphone 193 are 0.5, also can be, to improve the rotating speed of fan 20A, reduce the rotating speed of fan 20B, and maintain the mode of the rotating speed of fan 20C, determine the rotating speed of each fan.Namely, also can be, the rotating speed of microphone 191 apart near fan 20A is detected to improve the soundproof effect the highest with coherent value, reduce the soundproof effect minimum with coherent value and detect the rotating speed of microphone 193 apart near fan 20B, and maintain the mode not belonging to the rotating speed of the fan 20C of above-mentioned situation, determine the rotating speed of each fan.
When have input movement information signal (signals of such as silent mode etc.) that will carry out fan and control separately from remote controller 280, by switching SW135, the rotation control signal controlled from same rotational speed switches to the rotation control signal that fan controls separately, and is exported from control device 281 to fan 20A ~ 20C by this rotation control signal.The rotation control signal exported from control device 281 is imported into motor driver 282A ~ 282C, controls fan 20A ~ 20C for the rotating speed corresponding to rotation control signal.
As mentioned above, when using active noise elimination, because noise sensing microphones 161 ~ 163 is different from the coherent value that soundproof effect detects microphone 191 ~ 193, the soundproof effect expected is different.That is, the soundproof effect detection microphone soundproof effect that can be speculated as coherent value higher is higher, and the soundproof effect detection microphone soundproof effect that can be speculated as coherent value lower is lower.Therefore, in the indoor set 100 of present embodiment 10 with multiple fan 20A ~ 20C, improve and detects the rotating speed of microphone apart near fan with coherent value higher soundproof effect, and to reduce and soundproof effect that coherent value is lower detects the rotating speed of microphone apart near fan.
Consequently, the indoor set 100 of present embodiment 10 enters a raising at the soundproof effect being speculated as the higher region of soundproof effect, is being speculated as the lower noise region reduction of soundproof effect.Therefore, with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.In addition, the rotating speed of the mode that when indoor set 100 of present embodiment 10 is to control with same rotational speed, air quantity is constant to multiple fan 20A ~ 20C controls individually, can suppress the reduction of aeroperformance thus.
In addition, as shown in Figure 42 and Figure 43 of embodiment 9, the wind path of indoor set 100 is divided into multiple region, soundproof effect can be improved further thus.That is, can make the noise separation that sends from fan 20A ~ 20C regional, noise elimination mechanism A only reduces the noise sent from fan 20A, and noise elimination mechanism B only reduces the noise sent from fan 20C, and noise elimination mechanism C only reduces the noise sent from fan 20B.Therefore, noise sensing microphones 161 ~ 163 and soundproof effect detect crosstalk noise composition (noise from the fan the being located at adjacent stream sends) reduction that microphone 191 ~ 193 detects.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.Therefore, by the wind path of indoor set 100 is divided into multiple region, compared with the structure of Figure 45, noise can be reduced further.In addition, same with Figure 44 of embodiment 9, when existence does not arrange the fan of noise elimination mechanism, reduce the rotating speed of this fan 20, the noise not arranging the region of noise elimination mechanism thus reduces, and can obtain same soundproof effect.
In addition, as long as the setting position of the noise sensing microphones 161 ~ 163 of present embodiment 10 is at the upstream side of control loudspeaker 181 ~ 183.In addition, as long as the setting position of control loudspeaker 181 ~ 183 detects the upstream side of microphone 191 ~ 193 in the downstream of noise sensing microphones 161 ~ 163 at soundproof effect.In addition, in present embodiment 10, the setting position that soundproof effect detects microphone 191 ~ 193 soundproof effect detected microphone 191 ~ 193 to be configured on the roughly extended line of the rotating shaft of fan 20A ~ 20C, as long as but in the downstream of control loudspeaker 181 ~ 183, can be optional position.In addition, in present embodiment 10, be configured with 3 noise sensing microphones, control loudspeaker, soundproof effect detection microphone and signal processing apparatus respectively, but be not limited to this quantity.
In addition, in present embodiment 10, form Air Blast fan control unit 173 by the CPU 131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 173.In addition, the structure of Air Blast fan control unit 173 is also not limited to the structure shown in Figure 46.
In addition, in present embodiment 10, Air Blast fan control unit 173 is configured to, improve the soundproof effect larger with coherent value and detect the rotating speed of microphone 191,192 apart near fan 20A, 20C, and, reduce the soundproof effect less with coherent value and detect the rotating speed of microphone 193 apart near fan 20B, but also can be configured to only carry out a side wherein.
Above, in the indoor set 100 of present embodiment 10, configure multiple fan 20A ~ 20C, and the control device 281(arranging the rotating speed controlling fan 20A ~ 20C is individually more particularly Air Blast fan control unit 173).Air Blast fan control unit 173 calculating noise detection microphone 161 ~ 163 and soundproof effect detect the coherent value of microphone 191 ~ 193, and control, the rotating speed of microphone apart near fan is detected with the soundproof effect higher with the coherent value of noise sensing microphones to improve, and carry out rotating speed control, detect the rotating speed of microphone apart near fan to reduce with the soundproof effect lower with the coherent value of noise sensing microphones.Consequently, can expect that the region soundproof effect of higher soundproof effect improves further, can not expect that the noise region of soundproof effect reduces.Therefore, with use the indoor set of single fan in mutually isostructural noise elimination mechanism or do not carry out compared with indoor set that fan controls separately, noise to be reduced further.
In addition, Air Blast fan control unit 173 controls fan 20A ~ 20C rotating speed separately, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, the each self-separation of noise sent from fan 20A ~ 20C can be made, noise elimination mechanism A only reduces the noise sent from fan 20A, noise elimination mechanism B only reduces the noise sent from fan 20C, and noise elimination mechanism C only reduces the noise sent from fan 20B.Therefore, in each region, the crosstalk noise composition caused by the noise outputting to neighboring region reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, thus compared with the structure of Figure 45, higher noise reduction can be obtained.In addition, even if when existence does not arrange fan 20 of noise elimination mechanism, by reducing the rotating speed of this fan 20, the noise in the region not arranging noise elimination mechanism also can be reduced, can obtain same soundproof effect.
In addition, in the indoor set 100 of present embodiment 10, the coherent value detecting microphone according to noise sensing microphones and soundproof effect carries out the control of rotating speed.Theoretic soundproof effect can be inferred according to coherent value, thus detect the coherent value of microphone according to each soundproof effect, that more optimize, meticulous rotation speed of the fan can be realized and control.Therefore, the indoor set 100 of present embodiment 10 is compared with the structure of embodiment 8 with embodiment 9, can obtain higher soundproof effect.
Embodiment 11.
The noise elimination mechanism shown in embodiment 8 ~ embodiment 10 is not limited to for implementing noise elimination mechanism of the present invention.Even if such as use and above-mentioned different noise elimination mechanism, also can obtain having the air conditioner with embodiment 8 ~ embodiment 10 effect same.In addition, in present embodiment 11, be described using the example of the noise elimination mechanism different from the air conditioner of embodiment 8.In addition, in present embodiment 11, by with the difference of above-mentioned embodiment 8 ~ embodiment 10 centered by be described, identical label is marked to the part identical with embodiment 8 ~ embodiment 10.
Figure 47 is the front view of the indoor set that embodiments of the present invention 11 are shown.
Indoor set 100 and the difference of the indoor set 100 of embodiment 8 of present embodiment 11 are structures of noise elimination mechanism.Specifically, in the noise elimination mechanism A of the indoor set 100 of embodiment 8, in order to carry out active noise elimination, employ two microphones (noise sensing microphones 161 and soundproof effect detect microphone 191).On the other hand, two microphones (noise sensing microphones 161 and soundproof effect detect microphone 191) of noise elimination mechanism A are replaced as 1 microphone (noise/soundproof effect detects microphone 211) by the noise elimination mechanism D used in the indoor set 100 of present embodiment 11 as the noise elimination mechanism corresponding with noise elimination mechanism A.Equally, in the noise elimination mechanism B of the indoor set 100 of embodiment 8, in order to carry out active noise elimination, employ two microphones (noise sensing microphones 162 and soundproof effect detect microphone 192).On the other hand, two microphones (noise sensing microphones 162 and soundproof effect detect microphone 192) of noise elimination mechanism B are replaced as 1 microphone (noise/soundproof effect detects microphone 212) by the noise elimination mechanism E used in the indoor set 100 of present embodiment 11 as the noise elimination mechanism corresponding with noise elimination mechanism B.In addition, correspondingly the method for signal transacting is different, and thus in the indoor set 100 of present embodiment 11, signalization treating apparatus 204,205 replaces signal processing apparatus 201,202.In addition, the structure of signal processing apparatus 204,205 is identical with the structure illustrated in embodiment 2.
Then, the action of indoor set 100 is described.
Identical with embodiment 8, when indoor set 100 action, the impeller of fan 20A ~ 20C rotates, the air in the upside suction chamber of fan 20A ~ 20C, and carries air on the downside of fan 20A ~ 20C, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20A ~ 20C, produce operating sound (noise), this sound is propagated to downstream.The air carried by fan 20A ~ 20C passes through in wind path, and heat exchanger 50 is carried.Such as, when carrying out cooling operation, from the cold-producing medium of pipe arrangement heat exchanger 50 transporting low temperature be connected with off-premises station (not shown).The air that heat exchanger 50 is carried is become cold air, directly from blow-off outlet 3 to indoor releasing by the refrigerant cools of flowing in heat exchanger 50.
In addition, the suppressing method of the operating sound of indoor set 100 is identical with embodiment 2, carry out action, with make by noise/soundproof effect detect noise that microphone 211,212 detects close to zero mode export control sound, inhibit noise/soundproof effect to detect noise in microphone 211,212 as a result.
As illustrated in embodiment 8, in active sound reduction method, become the mode with noise opposite phase with the setting position (control point) detecting microphone 211,212 at noise/soundproof effect, export from control loudspeaker 181,182 and control sound.Therefore, detect near microphone 211,212 at noise/soundproof effect, soundproof effect improves, but the phase place controlling sound when leaving this changes.Therefore, leaving the position of noise/soundproof effect detection microphone 211,212, noise increases with the phase deviation controlling sound, causes soundproof effect to reduce.
In addition, the fan of the fan 20A ~ 20C of present embodiment 11 controls separately to be the control identical with the Air Blast fan control unit 171 illustrated in embodiment 8.
Like this, in the indoor set 100 with multiple fan 20A ~ 20C, improve and detect the rotating speed of microphone 211,212 apart near fan 20A, 20C with noise/soundproof effect, and reduce the rotating speed detecting the fan 20B of microphone 211,212 distance with noise/soundproof effect, thus, can increase and detect noise near microphone 211,212 to noise/soundproof effect that the soundproof effect of initiatively eliminating the noise is higher, and the noise detecting the region of microphone 211,212 away from noise/soundproof effect that the soundproof effect reducing initiatively to eliminate the noise reduces.
Namely, when using active noise elimination, as mentioned above, noise/the soundproof effect being positioned at the control point of Noise measarement detects the soundproof effect raising of microphone 211,212 and its periphery, but in the position leaving control point, the control sound exported from control loudspeaker 181,182 and the phase deviation of noise increase, and cause soundproof effect to reduce.But, in present embodiment 11, indoor set 100 is for having the structure of multiple fan 20A ~ 20C, thus can make to detect microphone 211,212 exports the higher noise of soundproof effect fan apart near fan 20A, 20C(with noise/soundproof effect) rotating speed improve, and reduce the fan that the fan 20B(detecting microphone 211,212 distance with noise/soundproof effect exports the lower noise of soundproof effect) rotating speed.
Consequently, indoor set 100 soundproof effect in the region that soundproof effect is higher of present embodiment 11 improves further, in the region that soundproof effect is lower, noise reduces, thus with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.In addition, the rotating speed of the mode making air quantity constant when the indoor set 100 of present embodiment 11 is to control with same rotational speed to multiple fan 20A ~ 20C controls individually, can suppress the reduction of aeroperformance thus.
In addition, as shown in Figure 48 and Figure 49, by the wind path of indoor set 100 is divided into multiple region, soundproof effect can be improved further.
Figure 48 is the front view of another example of the indoor set that embodiments of the present invention 11 are shown.In addition, Figure 49 is the left side view of the indoor set shown in Figure 48.In addition, Figure 49 illustrates through the sidewall of the housing 1 of indoor set 100.Indoor set 100 dividing plate 90 shown in Figure 48 and Figure 49,90a split wind path, the region that the air that the region that the air being divided into fan 20A blowout thus passes through, fan 20B blow out passes through and the region that the air that fan 20C blows out passes through.And, the region that the control loudspeaker 181 of noise elimination mechanism D and the air that noise/soundproof effect detection microphone 211 is configured in fan 20A blowout pass through.In addition, the control loudspeaker 182 of noise elimination mechanism E and noise/soundproof effect detect microphone 212 and are configured in the region that air that fan 20C blows out passes through.
By forming indoor set 100 like this, can by the noise separation that sends from fan 20A ~ 20C in regional, noise elimination mechanism D only reduces the noise sent from fan 20A, and noise elimination mechanism E only reduces the noise sent from fan 20C.Therefore, it is possible to prevent noise/soundproof effect from detecting microphone 211,212 noise sent from fan 20B detected, the crosstalk noise composition that thus noise/soundproof effect detects microphone 211,212 reduces.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.Therefore, by forming indoor set 100 as Figure 48 and Figure 49, compared with the structure of Figure 47, noise can be reduced further.In addition, in Figure 48 and Figure 49, in the whole region of wind path, insert dividing plate, but such as also can only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.
In addition, in present embodiment 11, noise/soundproof effect is detected the downstream that microphone 211,212 is arranged on control loudspeaker 181,182, but also noise/soundproof effect detection microphone 211,212 can be set at the upstream side of control loudspeaker 181,182.In addition, in present embodiment 11, two control loudspeakers are set respectively, noise/soundproof effect detects microphone and signal processing apparatus, but be not limited to this quantity.
In addition, in present embodiment 11, form Air Blast fan control unit 171 by the CPU 131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 171.In addition, embodiment 8 is same, and the structure of Air Blast fan control unit 171 is also not limited to the structure shown in Figure 37.
In addition, in present embodiment 11, Air Blast fan control unit 171 is configured to, and improves and detects the rotating speed of microphone 211,212 apart near fan 20A, 20C with noise/soundproof effect, and reduce the rotating speed of the fan 20B of distance, but also can be configured to only carry out a side wherein.
Above, in the indoor set 100 of present embodiment 11, configure multiple fan 20A ~ 20C, and the control device 281(arranging the rotating speed controlling fan 20A ~ 20C is individually more particularly Air Blast fan control unit 171).Air Blast fan control unit 171 controls, to improve the rotating speed of fan 20A, 20C of detecting the region air-supply near microphone 211,212 to the higher region of soundproof effect and noise/soundproof effect, and carry out rotating speed control, the rotating speed of the fan 20B blown in the region namely detecting microphone 211,212 distance with noise/soundproof effect with the region reduced to soundproof effect step-down.Therefore, the region soundproof effect that soundproof effect is higher improves further, and the noise region that soundproof effect is lower reduces.Therefore, with in mutually isostructural noise elimination mechanism, use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, noise to be reduced further.
In addition, Air Blast fan control unit 171 controls fan 20A ~ 20C rotating speed separately, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, can make each self-separation of noise sent from fan 20A ~ 20C, noise elimination mechanism D only reduces the noise sent from fan 20A, and noise elimination mechanism E only reduces the noise sent from fan 20C.Therefore, the crosstalk noise composition that the noise sent from fan 20B causes reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced.In addition, reduce the rotating speed not arranging the fan 20B of noise elimination mechanism, the noise not arranging the region of noise elimination mechanism thus reduces, and compared with the structure of Figure 47, can obtain higher noise reduction.
In addition, in present embodiment 11, noise sensing microphones 161,162 and soundproof effect are detected microphone 191,192 and be integrated into noise/soundproof effect and detect microphone 211,212, thus can reduce the quantity of microphone, can parts count be cut down, thus can reduce costs further.
Embodiment 12.
The noise elimination mechanism shown in embodiment 11 can certainly be used in the indoor set shown in embodiment 9.In addition, in present embodiment 12, by with the difference of above-mentioned embodiment 8 ~ embodiment 11 centered by be described, identical label is marked to the part identical with embodiment 8 ~ embodiment 11.
Figure 50 is the front view of the indoor set that embodiments of the present invention 12 are shown.
The indoor set 100 of present embodiment 12 is with the difference of the indoor set 100 of embodiment 11, is provided with noise elimination mechanism F(control loudspeaker 183, noise/soundproof effect detects microphone 213 and signal processing apparatus 206).The structure of signal processing apparatus 206 and signal processing apparatus 204,205 identical.
In addition, same with embodiment 9, be also provided with the holding wire (holding wire of conveying signal S1, S2, S3) connected from signal processing apparatus 204 ~ 206 to Air Blast fan control unit 172, these are also different from the indoor set 100 of embodiment 11.Signal from signal processing apparatus 204 ~ 206 to Air Blast fan control unit 172 S1, S2, S3 of carrying from detect signal that microphone 211 ~ 213 inputs via microphone amplifier 151 from noise/soundproof effect to be carried out the signal after digital translation by A/D converter 152.That is, signal S1, S2, S3 is the digital value being detected the sound pressure level that microphone 211 ~ 213 detects by noise/soundproof effect.
The structure of Air Blast fan control unit 172 is identical with the structure illustrated in embodiment 9, is the structure shown in Figure 41.It is identical that Air Blast fan control unit 172 has same rotational speed determining means 133, multiple equalization unit 136(quantity and soundproof effect detect microphone), fan controls separately rotating speed determining means 134A and multiple SW135(quantity is identical with fan 20).Same rotational speed determining means 133, according to the operation information inputted from remote controller 280, determines rotating speed when fan 20A ~ 20C is all worked with same rotational speed.The operation information inputted from remote controller 280 is such as cooling operation pattern, heating mode of operation and operation mode information such as dehumidifying operation mode etc., or by force, in, weak etc. air quantity information.Equalization unit 136 is detected digital value S1, S2, S3 of the sound pressure level that microphone 191 ~ 193 detects by soundproof effect for inputting, and average according to certain hour the signal of these S1, S2, S3.
Fan controls separately rotating speed determining means 134A according to each signal by S1, S2, the S3 after equalization unit 136 equalization and the rotary speed information that inputs from same rotational speed determining means 133, determines the every speed carrying out when fan controls separately to fan 20A ~ 20C.SW135, such as according to the signal inputted from remote controller 280, switches the rotation control signal of the fan 20A ~ 20C carried to motor driver 282A ~ 282C.That is, SW135 makes fan 20A ~ 20C all with identical rotary speed working (carrying out same rotational speed control) for switching to, or makes fan 20A ~ 20C separately with independently rotary speed working (carrying out fan to control separately).
Then, the action of indoor set 100 is described.
With the action that the difference of embodiment 11 is only Air Blast fan control unit 172.In addition, Air Blast fan control unit 172 action with illustrate in embodiment 9 identical.That is, equalization unit 136 averaged the digital value S1 ~ S3 being detected the sound pressure level that microphone 211 ~ 213 detects by noise/soundproof effect according to certain period.Fan control separately rotating speed determining means 134A be averaged according to these after sound pressure level value and the rotating speed that determined by same rotational speed determining means 133, determine the rotating speed of each fan carried out when fan controls separately.Specifically, determine the rotating speed of fan as follows, improve be averaged after sound pressure level value less noise/soundproof effect detects the rotating speed of microphone apart near (relevance is higher) fan, and to reduce and noise/soundproof effect that sound pressure level value after being averaged is larger detects the rotating speed of microphone apart near (relevance is higher) fan.Now, also can be, with the air quantity carrying out obtaining when fan controls separately become control with same rotational speed time identical air quantity mode, determine the respective rotating speed of fan 20A ~ 20C.
Such as, in the indoor set 100 of present embodiment 12,45dB at the mean value being detected the noise level that microphone 211 detects by noise/soundproof effect, the mean value being detected the noise level that microphone 212 detects by noise/soundproof effect is 45dB, and when the mean value of the noise level detected by noise/soundproof effect detection microphone 213 is 50dB, fan controls separately rotating speed determining means 134A to improve the rotating speed of fan 20A, 20C, and the mode reducing the rotating speed of fan 20B determines the rotating speed of each fan.Air quantity and rotating speed have proportionate relationship, when the structure that thus such as Figure 50 is such, by the rotating speed of fan 20A and fan 20C is improved 10%, and the rotating speed of fan 20B reduction by 20% are obtained identical air quantity.
In addition, the determining method of the rotating speed of above-mentioned fan 20A ~ 20C is only an example.Such as, 45dB at the mean value being detected the noise level that microphone 211 detects by noise/soundproof effect, the mean value being detected the noise level that microphone 212 detects by noise/soundproof effect is 47dB, and when the mean value of the noise level detected by noise/soundproof effect detection microphone 213 is 50dB, also can be, to improve the rotating speed of fan 20A, reduce the rotating speed of fan 20B, and maintain the mode of the rotating speed of fan 20C, determine the rotating speed of each fan.Namely, also can be, the rotating speed of microphone 211 apart near fan 20A is detected with noise/soundproof effect that the noise level improved with detect is minimum, reduce the noise/soundproof effect maximum with the noise level detected and detect the rotating speed of microphone 213 apart near fan 20B, and maintain the mode not belonging to the rotating speed of the fan 20C of above situation, determine the rotating speed of each fan.
When have input movement information signal (signals of such as silent mode etc.) that will carry out fan and control separately from remote controller 280, control the rotating speed of each fan individually.Namely, when have input movement information signal (signals of such as silent mode etc.) that will carry out fan and control separately from remote controller 280, by switching SW135, the rotation control signal controlled from same rotational speed switches to the rotation control signal that fan controls separately, and is exported from control device 281 to fan 20A ~ 20C by this rotation control signal.The rotation control signal exported from control device 281 is imported into motor driver 282A ~ 282C, controls fan 20A ~ 20C for the rotating speed corresponding to rotation control signal.
At this, present embodiment 12 indoor set 100 when, same with embodiment 9, due to the size of the crosstalk noise composition from adjacent fan, compared with detecting the region near microphone 213 with noise/soundproof effect, the region soundproof effect that noise/soundproof effect detects near microphone 211,212 improves.That is, compared with detecting the region near microphone 213 with noise/soundproof effect, the noise level that noise/soundproof effect detects the region detection near microphone 211,212 reduces.On the other hand, noise/soundproof effect detects the region near microphone 213, and soundproof effect reduces.Therefore, in the indoor set 100 of present embodiment 12 with multiple fan 20A ~ 20C, detected in the mean value of the noise level value that microphone 211 ~ 213 detects by noise/soundproof effect, improve the noise/soundproof effect less with the noise level mean value detected and detect the rotating speed of microphone 211,212 apart near fan 20A, 20C, reduce the noise/soundproof effect larger with the noise level mean value detected and detect the rotating speed of microphone 213 apart near fan 20B.
Consequently, the indoor set 100 of present embodiment 12 improves further at the region soundproof effect that soundproof effect is higher, the noise region lower at soundproof effect reduces, thus with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.In addition, the rotating speed of the mode that when indoor set 100 of present embodiment 12 is to control with same rotational speed, air quantity is constant to multiple fan 20A ~ 20C controls individually, can suppress the reduction of aeroperformance thus.
In addition, as shown in Figure 51 and Figure 52, the wind path of indoor set 100 is divided into multiple region, soundproof effect can be improved further thus.
Figure 51 is the front view of another example of the indoor set that embodiments of the present invention 12 are shown.In addition, Figure 52 is the left side view of the indoor set shown in Figure 51.In addition, Figure 52 illustrates through the sidewall of the housing 1 of indoor set 100.Indoor set 100 dividing plate 90 shown in Figure 51 and Figure 52,90a split wind path, are divided into the region passed through of air that air that fan 20A blows out blown out by region, fan 20B and the region that the air that fan 20C blows out passes through thus.And, the region that the control loudspeaker 181 of noise elimination mechanism D and the air that noise/soundproof effect detection microphone 211 is configured in fan 20A blowout pass through.In addition, the control loudspeaker 182 of noise elimination mechanism E and noise/soundproof effect detect microphone 212 and are configured in the region that air that fan 20C blows out passes through.In addition, the control loudspeaker 183 of noise elimination mechanism F and noise/soundproof effect detect microphone 213 and are configured in the region that air that fan 20B blows out passes through.
By forming indoor set 100 like this, can by the noise separation that sends from fan 20A ~ 20C in regional, noise elimination mechanism D only reduces the noise sent from fan 20A, and noise elimination mechanism E only reduces the noise sent from fan 20C, and noise elimination mechanism F only reduces the noise sent from fan 20B.Therefore, noise/soundproof effect detects crosstalk noise composition (noise from the fan the being located at adjacent stream sends) reduction that microphone 211 ~ 213 detects.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.Therefore, by forming indoor set 100 as Figure 51 and Figure 52, compared with the structure of Figure 50, noise can be reduced further.In addition, in Figure 51 and Figure 52, in the whole region of wind path, insert dividing plate, but such as also can only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.In addition, same with embodiment 11, even if when having do not arrange noise elimination mechanism fan 20 as shown in Figure 53, by reducing the rotating speed of this fan 20, also can reduce the noise in the region that noise elimination mechanism is not set, same soundproof effect can be obtained.
In addition, in present embodiment 12, noise/soundproof effect is detected the downstream that microphone 211 ~ 213 is arranged on control loudspeaker 181 ~ 183, but also noise/soundproof effect detection microphone 211 ~ 213 can be set at the upstream side of control loudspeaker 181 ~ 183.In addition, in present embodiment 12, configure 2 ~ 3 control loudspeakers respectively, noise/soundproof effect detects microphone and signal processing apparatus, but be not limited to this quantity.
In addition, in present embodiment 12, form Air Blast fan control unit 172 by the CPU131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 172.In addition, same with embodiment 9, the structure of Air Blast fan control unit 172 is also not limited to the structure shown in Figure 41.
In addition, in present embodiment 12, Air Blast fan control unit 172 is configured to, improve the noise/soundproof effect less with noise level and detect the rotating speed of microphone apart near fan, and, reduce the noise/soundproof effect larger with noise level and detect the rotating speed of microphone apart near fan, but also can be configured to only carry out a side wherein.
Above, in the indoor set 100 of present embodiment 12, configure multiple fan 20A ~ 20C, arranging the control device 281(controlled individually the rotating speed of fan 20A ~ 20C is more particularly Air Blast fan control unit 172).Air Blast fan control unit 172 controls, make detected in the mean value of the noise level that microphone 211 ~ 213 detects by noise/soundproof effect, improve the noise/soundproof effect less with the noise level that detects and detects the rotating speed of microphone apart near fan, and to reduce and noise/soundproof effect that the noise level that detects is larger detects the rotating speed of microphone apart near fan.Therefore, (that is, noise level is less) region soundproof effect that soundproof effect is higher improves further, and (namely noise level is larger) noise region that soundproof effect is lower reduces.Therefore, with use the indoor set of single fan in mutually isostructural noise elimination mechanism or do not carry out compared with indoor set that fan controls separately, noise to be reduced further.
In addition, Air Blast fan control unit 172 controls the rotating speed of fan 20A ~ 20C, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, the each self-separation of noise sent from fan 20A ~ 20C can be made, noise elimination mechanism D only reduces the noise sent from fan 20A, noise elimination mechanism E only reduces the noise sent from fan 20C, and noise elimination mechanism F only reduces the noise sent from fan 20B.Therefore, in each region, the crosstalk noise composition caused by the noise outputting to adjacent region reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced.Therefore, the soundproof effect that noise/soundproof effect detects in microphone 211 ~ 213 improves, and compared with the structure of Figure 51, can reduce noise further.In addition, even if when existence does not arrange fan 20 of noise elimination mechanism, by reducing the rotating speed of this fan 20, the noise in the region not arranging noise elimination mechanism also can be reduced, can obtain same soundproof effect.
In addition, in present embodiment 12, noise sensing microphones 161 ~ 163 and soundproof effect are detected microphone 191 ~ 193 and be integrated into noise/soundproof effect and detect microphone 211 ~ 213, thus can reduce the quantity of microphone, parts count can be cut down, a step-down low cost of going forward side by side.
Embodiment 13.
In embodiment 8 ~ embodiment 12, to detect fan (that is, export soundproof effect detect microphone or noise/soundproof effect detects the fan that microphone is easy to the noise playing soundproof effect) that microphone or noise/soundproof effect detect the higher noise of microphone relevance with soundproof effect and be set to by exporting and detect microphone with soundproof effect or noise/soundproof effect detects microphone apart near fan.Be not limited thereto, also can to detect exporting the fan (that is, export soundproof effect detect microphone or noise/soundproof effect detects the fan that microphone is easy to the noise playing soundproof effect) that microphone or noise/soundproof effect detect the higher noise of microphone relevance with soundproof effect and be set to following such fan.In addition, in present embodiment 13, be described for the air conditioner of embodiment 8.In addition, in present embodiment 13, by with the difference of above-mentioned embodiment 8 ~ embodiment 12 centered by be described, identical label is marked to the part identical with embodiment 8 ~ embodiment 12.
As mentioned above, the basic structure of the indoor set 100 of present embodiment 13 is identical with the Figure 35 illustrated in embodiment 8.The indoor set 100 of present embodiment 13 is with the difference of the indoor set 100 of embodiment 8, and the Air Blast fan information being input to the memory 132 of control device 281 is different.That is, the indoor set 100 of present embodiment 13 is with the difference of the indoor set 100 of embodiment 8, controls separately the Air Blast fan information difference that rotating speed determining means 134 inputs from memory 132 to fan.
In addition, in embodiment 8, detailed the arrange structure of control loudspeaker 181,182 to indoor set 100 side is not described, in present embodiment 13, as described below by control loudspeaker 181,182 machine 100 side disposed in the interior.
Because control loudspeaker 181,182 has certain thickness, if thus before the machine 100 disposed in the interior or back side, then can block wind path, cause aeroperformance to decline.Therefore, in present embodiment 13, configuration control loudspeaker 181,182 in the mechanical box (storage controls the box of substrate etc., not shown) of both sides face being located at housing 1.By configuring control loudspeaker 181,182 like this, can prevent control loudspeaker 181,182 from exposing in wind path.
More particularly, in embodiment 8, detect the identification number of microphone 191,192 apart near fan 20 as Air Blast fan information using with soundproof effect.On the other hand, in present embodiment 13, the identification number of the fan 20 arranged at the two ends of the housing 1 at indoor set 100 is as Air Blast fan information.That is, as shown in Figure 35, the Air Blast fan information in present embodiment 13 is the identification number of fan 20A and fan 20C.
The action of indoor set 100 is identical with the action illustrated in embodiment 8.Therefore, control separately to be described to the fan of fan 20A ~ 20C below.
Identical with embodiment 8, the fan of Air Blast fan control unit 171 controls separately rotating speed determining means 134 according to the rotary speed information determined by same rotational speed determining means 133 and the Air Blast fan information read from memory 132, determines the rotating speed of each fan 20 carried out when fan controls separately.Specifically, fan controls separately rotating speed determining means 134 and improves the rotating speed that identification number is imported into fan 20A, 20C of memory 132, and reduces the rotating speed that identification number is not imported into the fan 20B of memory 132.Its result, fan controls separately the rotating speed that rotating speed determining means 134 improves fan 20A, the 20C arranged at the two ends of the housing 1 of indoor set 100, and is reduced in the rotating speed of the fan 20B arranged beyond the two ends of the housing 1 of indoor set 100.In addition, now, also can be, with the air quantity having carried out obtaining when fan controls separately become control with same rotational speed time identical air quantity mode, determine fan 20A ~ 20C rotating speed separately.
When have input movement information signal (signals of such as silent mode etc.) that will carry out fan and control separately from remote controller 280, by switching SW135, the rotation control signal controlled from same rotational speed switches to the rotation control signal that fan controls separately, and is exported from control device 281 to fan 20A ~ 20C by this rotation control signal.The rotation control signal exported from control device 281 is imported into motor driver 282A ~ 282C, controls fan 20A ~ 20C for the rotating speed corresponding to rotation control signal.
When the noise that fan 20A, the 20C at two ends are sent carry out active noise elimination situation, carry out active noise elimination with the noise sent the fan 20B beyond two ends, crosstalk noise composition when detecting the noise of these fans is different.This is because when detecting the noise sent from fan 20B, the noise sent from adjacent fan 20A, 20C is also included in as crosstalk noise composition.Therefore, in present embodiment 13, indoor set 100 is set to the structure with multiple fan 20A ~ 20C, improve the rotating speed of fan 20A, the 20C at crosstalk noise composition is less when noise measuring two ends, and when being reduced in noise measuring crosstalk noise composition larger, the rotating speed of fan 20B beyond two ends.
Consequently, the indoor set 100 of present embodiment 13 improves further at the region soundproof effect that soundproof effect is higher, the noise region lower at soundproof effect reduces, thus with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.In addition, the rotating speed of the mode that when indoor set 100 of present embodiment 13 is to control with same rotational speed, air quantity is constant to multiple fan 20A ~ 20C controls individually, can suppress the reduction of aeroperformance thus.
In addition, in present embodiment 13, by the two sides of control loudspeaker 181,182 machine 100 disposed in the interior, do not expose in wind path to make control loudspeaker 181,182.Therefore, it is possible to prevent from, because control loudspeaker 181,182 is exposed to the pressure loss produced in wind path, the decline of aeroperformance can being prevented.
In addition, in the indoor set 100 of present embodiment 13, same with the indoor set 100 shown in Figure 38 and Figure 39 of embodiment 8, the wind path of indoor set 100 is divided into multiple region, also can improves soundproof effect further thus.
Namely, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, can make the noise separation sent from fan 20A ~ 20C regional, noise elimination mechanism A only reduces the noise sent from fan 20A, and noise elimination mechanism B only reduces the noise sent from fan 20C.Therefore, can prevent noise sensing microphones 161,162 and soundproof effect from detecting microphone 191,192 and detect the noise sent from fan 20B, thus noise sensing microphones 161,162 and soundproof effect detect the crosstalk noise composition reduction of microphone 191,192.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.On the other hand, reduce the rotating speed not arranging the fan 20B of noise elimination mechanism, the noise not arranging the region of noise elimination mechanism thus reduces.Therefore, in the indoor set 100 of present embodiment 13, by the wind path of indoor set 100 is divided into multiple region, compared with the structure of Figure 35, noise can be reduced further.In addition, do not need to arrange dividing plate in the whole region of wind path, can be yet, such as, only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.
In addition, in present embodiment 13, by the two sides of noise sensing microphones 161,162 machine 100 disposed in the interior, as long as but the upstream side of control loudspeaker 181,182, the setting position of noise sensing microphones 161,162 can be optional position.In addition, in present embodiment 13, soundproof effect is detected microphone 191,192 to be configured on the roughly extended line of the rotating shaft of fan 20A, 20C, as long as but the downstream of control loudspeaker 181,182, the setting position that soundproof effect detects microphone 191,192 can be optional position.In addition, in present embodiment 13, configure two noise sensing microphones, control loudspeaker, soundproof effect detection microphone and signal processing apparatus respectively, but be not limited to this quantity.
In addition, in present embodiment 13, form Air Blast fan control unit 171 by the CPU 131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 171.In addition, the structure of Air Blast fan control unit 171 is also not limited to the structure shown in Figure 37.
In addition, in present embodiment 13, Air Blast fan control unit 171 is configured to, and improves the rotating speed of fan 20A, the 20C at the two ends of indoor set 100, and, reduce the rotating speed of the fan 20B beyond two ends, but also can be configured to only carry out a side wherein.
Above, in the indoor set 100 of present embodiment 13, configure multiple fan 20A ~ 20C, the Air Blast fan control unit 171 controlled individually the rotating speed of fan 20A ~ 20C is set.Air Blast fan control unit 171 controls, and to improve the rotating speed of fan 20A, 20C of arranging at the two ends of indoor set 100, and carries out rotating speed control, to be reduced in the rotating speed of the fan 20B arranged beyond the two ends of indoor set 100.Therefore, improve further at and the region soundproof effect that soundproof effect is higher less from the crosstalk noise composition of adjacent fan, reduce at the comparatively large and noise region that soundproof effect is lower of crosstalk noise composition.Therefore, with in the noise elimination mechanism of identical structure, use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, higher noise reduction can being obtained.
In addition, Air Blast fan control unit 171 controls the respective rotating speed of fan 20A ~ 20C, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the two sides of control loudspeaker 181,182 machine 100 disposed in the interior, do not expose to wind path to make control loudspeaker 181,182.Therefore, it is possible to prevent the pressure loss produced because control loudspeaker 181,182 is exposed to wind path, the decline of aeroperformance can be prevented.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, can make each self-separation of noise sent from fan 20A ~ 20C, noise elimination mechanism A only reduces the noise sent from fan 20A, and noise elimination mechanism B only reduces the noise sent from fan 20C.Therefore, the crosstalk noise composition that the noise sent from fan 20B causes reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced.In addition, reduce the rotating speed not arranging the fan 20B of noise elimination mechanism, the noise not arranging the region of noise elimination mechanism thus reduces, and compared with the structure of Figure 35, can obtain higher noise reduction.
Embodiment 14.
The Air Blast fan information shown in embodiment 13 can certainly be used in the indoor set of embodiment 11.In addition, in present embodiment 14, by with the difference of above-mentioned embodiment 8 ~ embodiment 13 centered by be described, identical label is marked to the part identical with embodiment 8 ~ embodiment 13.
The basic structure of the indoor set 100 of present embodiment 14 is identical with the Figure 47 illustrated in embodiment 11.The indoor set 100 of present embodiment 14 is with the difference of the indoor set 100 of embodiment 11, and the Air Blast fan information being input to the memory 132 of control device 281 is different.More particularly, in present embodiment 14, the identification number of the fan 20 arranged at the two ends of the housing 1 at indoor set 100 is as Air Blast fan information.That is, as shown in Figure 47, the Air Blast fan information of present embodiment 14 is the identification number of fan 20A and fan 20C.
In addition, in embodiment 11, detailed the arrange structure of control loudspeaker 181,182 to indoor set 100 side is not described, in present embodiment 14, as described below control loudspeaker 181,182 is arranged to indoor set 100 side.
Because control loudspeaker 181,182 has certain thickness, if thus before the machine 100 disposed in the interior or back side, then can block wind path, cause aeroperformance to decline.Therefore, in present embodiment 14, configuration control loudspeaker 181,182 in the mechanical box (storage controls the box of substrate etc., not shown) of both sides face being located at housing 1.By configuring control loudspeaker 181,182 like this, can prevent control loudspeaker 181,182 from exposing at wind path.
The action of indoor set 100 is identical with the action illustrated in embodiment 11.Therefore, control separately to be described to the fan of fan 20A ~ 20C below.
Identical with embodiment 11, the fan of Air Blast fan control unit 171 controls separately rotating speed determining means 134 according to the rotary speed information determined by same rotational speed determining means 133 and the Air Blast fan information read from memory 132, determines the rotating speed of each fan carried out when fan controls separately.Specifically, fan controls separately rotating speed determining means 134 and improves the rotating speed that identification number is imported into fan 20A, 20C of memory 132, and reduces the rotating speed that identification number is not imported into the fan 20B of memory 132.Consequently, fan controls separately the rotating speed that rotating speed determining means 134 improves fan 20A, the 20C arranged at the two ends of the housing 1 of indoor set 100, and is reduced in the rotating speed of the fan 20B arranged beyond the two ends of the housing 1 of indoor set 100.In addition, now, also can be, with the air quantity having carried out obtaining when fan controls separately become control with same rotational speed time identical air quantity mode, determine fan 20A ~ 20C rotating speed separately.
When have input movement information signal (signals of such as silent mode etc.) that will carry out fan and control separately from remote controller 280, by switching SW135, the rotation control signal controlled from same rotational speed switches to the rotation control signal that fan controls separately, and is exported from control device 281 to fan 20A ~ 20C by this rotation control signal.The rotation control signal exported from control device 281 is imported into motor driver 282A ~ 282C, controls fan 20A ~ 20C for the rotating speed corresponding to rotation control signal.
When the noise that fan 20A, the 20C at two ends are sent carry out active noise elimination situation, carry out active noise elimination with the noise sent the fan 20B beyond two ends, crosstalk noise composition when detecting the noise of these fans is different.This is because when detecting the noise sent from fan 20B, the noise sent from adjacent fan 20A, 20C is also included in as crosstalk noise composition.Therefore, in present embodiment 14, indoor set 100 is set to the structure with multiple fan 20A ~ 20C, improve the rotating speed of fan 20A, the 20C at crosstalk noise composition is less when noise measuring two ends, and the rotating speed of fan 20B beyond the two ends that when being reduced in noise measuring, crosstalk noise composition is larger.
Consequently, the indoor set 100 of present embodiment 14 improves further at the region soundproof effect that soundproof effect is higher, the noise region lower at soundproof effect reduces, thus with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.In addition, the rotating speed of the mode that when indoor set 100 of present embodiment 14 is to control with same rotational speed, air quantity is constant to multiple fan 20A ~ 20C controls individually, can suppress the reduction of aeroperformance thus.
In addition, in present embodiment 14, by the two sides of control loudspeaker 181,182 machine 100 disposed in the interior, do not expose to wind path to make control loudspeaker 181,182.Therefore, it is possible to prevent the pressure loss produced because control loudspeaker 181,182 is exposed to wind path, the decline of pneumatic performance can be prevented.
In addition, in the indoor set 100 of present embodiment 14, same with the indoor set 100 shown in Figure 48 and Figure 49 of embodiment 11, the wind path of indoor set 100 is divided into multiple region, also can improves soundproof effect further thus.
Namely, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, can make the noise separation sent from fan 20A ~ 20C regional, noise elimination mechanism D only reduces the noise sent from fan 20A, and noise elimination mechanism E only reduces the noise sent from fan 20C.Therefore, it is possible to prevent noise/soundproof effect from detecting microphone 211,212 noise sent from fan 20B detected, the crosstalk noise composition that thus noise/soundproof effect detects microphone 211,212 reduces.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.On the other hand, reduce the rotating speed not arranging the fan 20B of noise elimination mechanism, the noise not arranging the region of noise elimination mechanism thus reduces.Therefore, in the indoor set 100 of present embodiment 14, by the wind path of indoor set 100 is divided into multiple region, compared with the structure of Figure 47, noise can be reduced further.In addition, do not need to arrange dividing plate in the whole region of wind path, can be yet, such as, only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.
In addition, in present embodiment 14, noise/soundproof effect is detected the downstream that microphone 211,212 is arranged on control loudspeaker 181,182, but also noise/soundproof effect detection microphone 211,212 can be set at the upstream side of control loudspeaker 181,182.In addition, in present embodiment 14, two control loudspeakers are set respectively, noise/soundproof effect detects microphone and signal processing apparatus, but be not limited to this quantity.
In addition, in present embodiment 14, form Air Blast fan control unit 171 by the CPU 131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 171.In addition, the structure of Air Blast fan control unit 171 is also not limited thereto.
In addition, in present embodiment 14, Air Blast fan control unit 171 is configured to, and improves the rotating speed of fan 20A, the 20C at the two ends of indoor set 100, and, reduce the rotating speed of the fan 20B beyond two ends, but also can be configured to only carry out a side wherein.
Above, in the indoor set 100 of present embodiment 14, configure multiple fan 20A ~ 20C, the Air Blast fan control unit 171 controlled individually the rotating speed of fan 20A ~ 20C is set.Air Blast fan control unit 171 controls, and to improve the rotating speed of fan 20A, 20C of arranging at the two ends of indoor set 100, and carries out rotating speed control, to be reduced in the rotating speed of the fan 20B arranged beyond the two ends of indoor set 100.Therefore, improve further at and the region soundproof effect that soundproof effect is higher less from the crosstalk noise composition of adjacent fan, reduce at the comparatively large and noise region that soundproof effect is lower of crosstalk noise composition.Therefore, with in the noise elimination mechanism of identical structure, use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, noise to be reduced further.
In addition, Air Blast fan control unit 171 controls fan 20A ~ 20C rotating speed separately, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the two sides of control loudspeaker 181,182 machine 100 disposed in the interior, do not expose to wind path to make control loudspeaker 181,182.Therefore, it is possible to prevent the pressure loss produced because control loudspeaker 181,182 is exposed to wind path, the decline of aeroperformance can be prevented.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, can make each self-separation of noise sent from fan 20A ~ 20C, noise elimination mechanism D only reduces the noise sent from fan 20A, and noise elimination mechanism E only reduces the noise sent from fan 20C.Therefore, the crosstalk noise composition that the noise sent from fan 20B causes reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced.In addition, reduce the rotating speed not arranging the fan 20B of noise elimination mechanism, the noise not arranging the region of noise elimination mechanism thus reduces, and compared with the structure of Figure 47, can obtain higher noise reduction.
In addition, in present embodiment 14, noise sensing microphones 161,162 and soundproof effect are detected microphone 191,192 and be integrated into noise/soundproof effect and detect microphone 211,212, thus can reduce the quantity of microphone, parts count can be cut down, a step-down low cost of going forward side by side.
Embodiment 15.
When carrying out fan according to the soundproof effect of soundproof effect detection microphone or noise/soundproof effect detection microphone and controlling separately, also such as can carry out fan so below and control separately.In addition, in present embodiment 15, by with the difference of above-mentioned embodiment 8 ~ embodiment 14 centered by be described, identical label is marked to the part identical with embodiment 8 ~ embodiment 14.
Figure 54 is the front view of the indoor set that embodiments of the present invention 15 are shown.
Indoor set 100 and the difference of the indoor set 100 of embodiment 9 of present embodiment 15 are only the structures of Air Blast fan control unit 174.
The Air Blast fan control unit 174 of present embodiment 15 is described.
Figure 55 is the structure chart of the control device that embodiments of the present invention 15 are shown.The various action below illustrated and unit, undertaken by performing the program of installing in the control device 281 that has at indoor set 100.Identical with the structure described in embodiment 8 ~ embodiment 14, control device 281 mainly having input part 130 for inputting the signal from external input device such as remote controllers 280, carrying out the CPU 131 of computing and the memory 132 for storing data or program according to the program of installing.In addition, the CPU 131 of present embodiment 15 has Air Blast fan control unit 174.
It is identical that Air Blast fan control unit 174 has same rotational speed determining means 133, multiple sound deadening capacity computing unit 138(quantity and soundproof effect detect microphone), fan controls separately rotating speed determining means 134C and multiple SW 135(is identical with fan 20).Same rotational speed determining means 133, according to the operation information inputted from remote controller 280, determines rotating speed when fan 20A ~ 20C is all worked with same rotational speed.The operation information inputted from remote controller 280 is the operation mode information of such as cooling operation pattern, heating mode of operation and dehumidifying operation mode etc., or by force, in, the air quantity information such as weak.Sound deadening capacity computing unit 138 is detected digital value S1, S2, S3 of the sound pressure level that microphone 191 ~ 193 detects by soundproof effect for inputting, and calculate sound deadening capacity according to the signal of these S1, S2, S3.
Fan controls separately rotating speed determining means 134C according to the sound deadening capacity calculated by sound deadening capacity computing unit 138 and the Air Blast fan information stored in memory 132, determines the every speed carrying out when fan controls separately to fan 20A ~ 20C.Air Blast fan information detects the information of the higher fan 20 of microphone 191 ~ 193 relevance.SW135, such as according to the signal inputted from remote controller 280, switches the rotation control signal of the fan 20A ~ 20C carried to motor driver 282A ~ 282C.That is, SW135 switches to and makes fan 20A ~ 20C all with identical rotary speed working (carrying out same rotational speed control), or makes fan 20A ~ 20C respectively with independent rotary speed working (carrying out fan to control separately).
Figure 56 is the structure chart of the sound deadening capacity computing unit that embodiments of the present invention 15 are shown.
Sound deadening capacity computing unit 138 has: the equalization unit 136 averaged inputted signal (S1, S2 or S3); For store start active eliminate the noise control before sound pressure level control before sound pressure level memory cell 139; And difference engine 140.
Then, the action of indoor set 100 is described.
Same with embodiment 9, when indoor set 100 action, the impeller of fan 20A ~ 20C rotates, the air in the upside suction chamber of fan 20A ~ 20C, and carries air on the downside of fan 20A ~ 20C, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20A ~ 20C, produce operating sound (noise), this sound is propagated to downstream.The air carried by fan 20A ~ 20C passes through in wind path, and heat exchanger 50 is carried.Such as, when carrying out cooling operation, from the cold-producing medium of pipe arrangement heat exchanger 50 transporting low temperature be connected with off-premises station (not shown).The air that heat exchanger 50 is carried is become cold air, directly from blow-off outlet 3 to indoor releasing by the refrigerant cools of flowing in heat exchanger 50.
In addition, the action of noise elimination mechanism A ~ C is also identical with embodiment 9, carry out action, with make by soundproof effect detect noise that microphone 191 ~ 193 detects close to zero mode export control sound, suppress soundproof effect to detect noise in microphone 191 ~ 193 as a result.
Present embodiment 15 indoor set 100 when, except the noise sent from fan 20B, the noise (crosstalk noise composition) sent from adjacent fan 20A, 20C also enters soundproof effect and detects microphone 193.On the other hand, by soundproof effect detect crosstalk noise composition that microphone 191,192 detects with detected by soundproof effect compared with crosstalk noise composition that microphone 193 detects little.Because soundproof effect detection microphone 191,192 only has an adjacent fan 20(fan 20B).Therefore, compared with noise elimination mechanism C, the soundproof effect of noise elimination mechanism A, B improves.
Then, control separately to be described to the fan of the fan 20A ~ 20C of present embodiment 15.
The operation information utilizing remote controller 280 to select is imported into control device 281.As mentioned above, operation information is the operation mode information such as such as cooling operation pattern, heating mode of operation and dehumidifying operation mode.In addition, strong, in, the air quantity information such as weak too, input to control device 281 from remote controller 280 as operation information.The operation information being imported into control device 281 is imported into same rotational speed determining means 133 via input part 130.The same rotational speed determining means 133 that have input operation information according to inputted operation information, determine to fan 20A ~ 20C carry out same rotational speed control time rotating speed.When not carrying out fan and controlling separately, control fan 20A ~ 20C with all identical rotating speed.
On the other hand, in sound deadening capacity computing unit 138, S1 ~ S3(is detected the digital value of the sound pressure level that microphone 191 ~ 193 detects by soundproof effect) input from signal processing apparatus 201 ~ 203 to equalization unit 136.In addition, before carrying out active noise elimination control, sound deadening capacity computing unit 138 is averaged according to certain period the sound pressure level detected by soundproof effect detection microphone 191 ~ 193 by equalization unit 136, and the sound pressure level after this being averaged is stored in the front sound pressure level memory cell 139 of control.Then, sound deadening capacity computing unit 138 is averaged according to certain period the sound pressure level detected by soundproof effect detection microphone 191 ~ 193 by equalization unit 136 when active noise elimination controls.
And, sound deadening capacity computing unit 138 according to " active eliminate the noise and control time average according to certain period the sound pressure level obtained to being detected the sound pressure level that detects of microphone 191 ~ 193 by soundproof effect by equalization unit 136 " with " and carry out active eliminates the noise controls before during necessarily, average the sound pressure level obtained to being detected the sound pressure level that microphone 191 ~ 193 detects by soundproof effect by equalization unit 136 " difference of (being stored in the front sound pressure level before controlling in sound pressure level memory cell 139), calculating sound deadening capacity.The sound deadening capacity calculated by sound deadening capacity computing unit 138 is imported into fan and controls separately rotating speed determining means 134C.
In addition, in memory 132, Air Blast fan information is stored.Air Blast fan information is the information of the fan 20 exporting the noise the highest with the relevance being detected the sound that microphone 191 ~ 193 detects by soundproof effect.These identification numbers detect microphone according to each each soundproof effect and distribute.In present embodiment 15, obtain the identification number as Air Blast fan information as described below.Such as, confirm that the sound detected by soundproof effect detection microphone 191 is with the highest from which noise correlation the noise that fan 20A ~ 20C sends.When being detected microphone 191 sound detected and the noise correlation sent from fan 20A by soundproof effect and being the highest, become with the Air Blast fan information that soundproof effect detects microphone 191 corresponding the identification number representing fan 20A.Equally, also microphone 192,193 is detected to soundproof effect and determine corresponding Air Blast fan information, and store in memory 132 in advance.
The decision of Air Blast fan information can be carried out like that such as below.Such as, before product export, under the state making fan 20A ~ 20C work, detected by the microphone that can detect the noise sent from fan 20A ~ 20C exactly.And, measure the sound detected by these microphones and the coherent value being detected the sound that microphone 191 detects by soundproof effect.Then, microphone soundproof effect being detected to the highest detected value of microphone 191 detected value coherent value is determined.The identification number of fan 20 exporting the noise that this microphone detects becomes and detects Air Blast fan information corresponding to microphone 191 with soundproof effect.Similarly can determine to detect with soundproof effect microphone 192,193 corresponding Air Blast fan information.
In addition, the decision of Air Blast fan information also can be carried out like that such as below.In Air Blast fan control unit 174 grade of indoor set 100, coherence's arithmetic element 137 such shown in embodiment 10 is installed in advance.And, during running after product export, measure the coherent value that the detected value of noise sensing microphones 161 ~ 163 and soundproof effect detect the detected value of microphone 191 ~ 193.And, distance and each soundproof effect can be detected the identification number of the nearer fan 20 of the highest noise sensing microphones of microphone 191 ~ 193 coherent value as Air Blast fan information.
In addition, the method for the decision of Air Blast fan information is not limited to said method.As long as can determine to export the method for the fan of the noise the highest with being detected sound relevance that microphone 191 ~ 193 detects by soundproof effect.
The sound deadening capacity calculated by sound deadening capacity computing unit 138 and the Air Blast fan information stored in memory 132 are imported into fan and control separately rotating speed determining means 134C.Fan controls separately rotating speed determining means 134C according to these information, determines the rotating speed of each fan carried out when fan controls separately.Specifically, determine the rotating speed of fan as follows, improve the rotating speed of the fan higher with being detected sound relevance that microphone detects by the soundproof effect that sound deadening capacity is larger, and reduce and detected by the soundproof effect that sound deadening capacity is less the rotating speed of the higher fan of sound relevance that microphone detects.Now, also can be that the air quantity obtained when having carried out fan and having controlled separately becomes the mode of air quantity identical when controlling with same rotational speed, determine fan 20A ~ 20C rotating speed separately.
Such as, in the indoor set 100 of present embodiment 15, the fan supposing to export the noise the highest with being detected sound relevance that microphone 191 detects by soundproof effect is fan 20A, the fan exporting the noise the highest with being detected sound relevance that microphone 192 detects by soundproof effect is fan 20C, exports and the fan that detects the highest noise of sound relevance that microphone 193 detects by soundproof effect is fan 20B.And suppose that the sound deadening capacity of soundproof effect detection microphone 191 is-5dB, the sound deadening capacity that soundproof effect detects microphone 192 is-5dB, and the sound deadening capacity that soundproof effect detects microphone 193 is-2dB.In this situation, fan controls separately rotating speed determining means 134C to improve the rotating speed of fan 20A, 20C, and the mode reducing the rotating speed of fan 20B determines the rotating speed of each fan.Air quantity and rotating speed have proportionate relationship, thus such as, when the such structure of Figure 54, by the rotating speed of fan 20A and fan 20C is improved 10%, and the rotating speed of fan 20B is reduced by 20% obtain identical air quantity.
In addition, the determining method of the rotating speed of above-mentioned fan 20A ~ 20C is only an example.Such as, in the indoor set 100 of present embodiment 15, the fan supposing to export the noise the highest with being detected sound relevance that microphone 191 detects by soundproof effect is fan 20A, the fan exporting the noise the highest with being detected sound relevance that microphone 192 detects by soundproof effect is fan 20C, exports and the fan that detects the highest noise of sound relevance that microphone 193 detects by soundproof effect is fan 20B.And suppose that the sound deadening capacity of soundproof effect detection microphone 191 is-5dB, the sound deadening capacity that soundproof effect detects microphone 192 is-3dB, and the sound deadening capacity that soundproof effect detects microphone 193 is-2dB.In this situation, Ke Yishi, to improve the rotating speed of fan 20A, reduces the rotating speed of fan 20B, and maintains the mode of the rotating speed of fan 20C, determine the rotating speed of each fan.Namely, can be, to improve the rotating speed that the soundproof effect maximum with sound deadening capacity detects the higher fan 20A of microphone 191 relevance, the soundproof effect minimum with sound deadening capacity is detected the rotating speed of the higher fan 20B of microphone 193 relevance, and maintain the mode not belonging to the rotating speed of the fan 20C of above situation, determine the rotating speed of each fan.
When have input movement information signal (signals of such as silent mode etc.) that will carry out fan and control separately from remote controller 280, by switching SW135, the rotation control signal controlled from same rotational speed switches to the rotation control signal that fan controls separately, and is exported from control device 281 to fan 20A ~ 20C by this rotation control signal.The rotation control signal exported from control device 281 is imported into motor driver 282A ~ 282C, and controlling fan 20A ~ 20C becomes the rotating speed corresponding to rotation control signal.
At this, as mentioned above, when indoor set 100 of present embodiment 15, due to the size of the crosstalk noise composition from adjacent fan, compared with detecting the region near microphone 193 with soundproof effect, the region sound deadening capacity that soundproof effect detects near microphone 191,192 is higher.On the other hand, the region sound deadening capacity that soundproof effect detects near microphone 193 reduces.Therefore, in the indoor set 100 of present embodiment 15 with multiple fan 20A ~ 20C, improve and export the rotating speed that the soundproof effect larger with sound deadening capacity detects microphone 191,192 relevance higher noise fan 20A, 20C, and reduce the rotating speed that the output soundproof effect less with sound deadening capacity detects the fan 20B of the higher noise of microphone 193 relevance.
Consequently, the indoor set 100 of present embodiment 15 improves further at the region soundproof effect that soundproof effect is higher, the noise region lower at soundproof effect reduces, thus with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.In addition, the rotating speed of the mode that when indoor set 100 of present embodiment 15 is to control with same rotational speed, air quantity is constant to multiple fan 20A ~ 20C controls individually, can suppress the reduction of aeroperformance thus.
In addition, in the indoor set 100 of present embodiment 15, same with the indoor set 100 shown in Figure 42 and Figure 43 of embodiment 9, the wind path of indoor set 100 is divided into multiple region, soundproof effect can be improved further thus.
Namely, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, can make the noise separation sent from fan 20A ~ 20C regional, noise elimination mechanism A only reduces the noise sent from fan 20A, noise elimination mechanism B only reduces the noise sent from fan 20C, and noise elimination mechanism C only reduces the noise sent from fan 20B.Therefore, noise sensing microphones 161 ~ 163 and soundproof effect detect crosstalk noise composition (noise from the fan the being located at adjacent stream sends) reduction that microphone 191 ~ 193 detects.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.Therefore, in the indoor set 100 of present embodiment 15, by the wind path of indoor set 100 is divided into multiple region, compared with the structure of Figure 54, noise can be reduced further.On the other hand, when existence does not arrange the fan of noise elimination mechanism, reduce the rotating speed of this fan 20, the noise not arranging the region of noise elimination mechanism thus reduces, and can obtain same effect.In addition, in Figure 42 and Figure 43, insert dividing plate in the whole region of wind path, but also can be, such as, only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.
In addition, in present embodiment 15, the setting position that soundproof effect detects microphone 191 ~ 193 soundproof effect detected microphone 191 ~ 193 to be configured on the roughly extended line of the rotating shaft of fan 20A ~ 20C, as long as but in the downstream of control loudspeaker 181 ~ 183, can be optional position.In addition, in present embodiment 15,3 noise sensing microphones, control loudspeaker, soundproof effect detection microphone and signal processing apparatus are set respectively, but are not limited to this quantity.
In addition, in present embodiment 15, form Air Blast fan control unit 174 by the CPU131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 174.In addition, the structure of Air Blast fan control unit 174 is also not limited to the structure shown in Figure 55 and Figure 56.
In addition, in present embodiment 15, Air Blast fan control unit 174 is configured to, improve the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by the soundproof effect that sound deadening capacity is larger, and, reduce the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by the soundproof effect that sound deadening capacity is less, but also can be configured to only carry out a side wherein.
In addition, in present embodiment 15, soundproof effect is used to detect the parameter of sound deadening capacity as the rotating speed of control fan of microphone 191 ~ 193, but, other amount can certainly be used to be used as the parameter of the rotating speed controlling fan.Also can be, such as, calculate and detect by soundproof effect the mean value of sound pressure level that microphone 191 ~ 193 detects respectively, reduce the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by the soundproof effect that the mean value of sound pressure level is maximum.In addition, also can be, such as, calculate and detect by soundproof effect the mean value of sound pressure level that microphone 191 ~ 193 detects respectively, improve the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by the soundproof effect that the mean value of sound pressure level is minimum.Above two sides can certainly be carried out.
In addition, as the parameter of rotating speed controlling fan, noise sensing microphones 161 and soundproof effect detect the coherent value of microphone 191, noise sensing microphones 162 and soundproof effect detect microphone 192 coherent value, noise sensing microphones 163 and soundproof effect can be used to detect the coherent value of microphone 193.Also can be such as, reduce the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by the soundproof effect that coherent value is minimum.In addition, also can be such as, improve the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by the soundproof effect that coherent value is maximum.Above two sides can certainly be carried out.
Above, in the indoor set 100 of present embodiment 15, configure multiple fan 20A ~ 20C, arranging the control device 281(controlled individually the rotating speed of fan 20A ~ 20C is more particularly Air Blast fan control unit 174).Air Blast fan control unit 174 controls, make to detect in the sound deadening capacity of microphone 191 ~ 193 at soundproof effect, improve the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by the soundproof effect that sound deadening capacity is larger, and reduce output and detected the rotating speed of fan of the higher noise of sound relevance that microphone detects by the soundproof effect that sound deadening capacity is less.Therefore, by improving the rotating speed in the larger region of sound deadening capacity, soundproof effect improves further, and by reducing the rotating speed in the less region of sound deadening capacity, the noise in this region reduces.Therefore, with in mutually isostructural noise elimination mechanism, use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, noise to be reduced further.
In addition, in the indoor set 100 of present embodiment 15, determine to export the fan of the noise higher with being detected sound relevance that microphone detects by the soundproof effect that sound deadening capacity is larger, even if thus when employing the different multiple fan 20A ~ 20C of exported sound pressure level, also rotating speed control can be carried out exactly.
In addition, Air Blast fan control unit 174 controls fan 20A ~ 20C rotating speed separately, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, the each self-separation of noise sent from fan 20A ~ 20C can be made, noise elimination mechanism A only reduces the noise sent from fan 20A, noise elimination mechanism B only reduces the noise sent from fan 20C, and noise elimination mechanism C only reduces the noise sent from fan 20B.Therefore, in each region, the crosstalk noise composition caused by the noise outputting to adjacent region reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, thus compared with the structure of Figure 54, higher noise reduction can be obtained.On the other hand, when existence does not arrange the region of noise elimination mechanism, reduce the rotating speed not arranging the fan of noise elimination mechanism, thus, the noise in this region reduces, and can obtain soundproof effect equally.
Embodiment 16.
Fan shown in embodiment 15 controls separately, and (using the fan detecting the information of the higher fan of microphone relevance 20 from soundproof effect to control separately) also can implement in the air conditioner with the noise elimination mechanism different with the noise elimination mechanism of embodiment 15.In addition, below the situation that the fan adopted in the indoor set of embodiment 12 shown in embodiment 15 controls separately is described.In addition, in present embodiment 16, by with the difference of above-mentioned embodiment 8 ~ embodiment 15 centered by be described, identical label is marked to the part identical with embodiment 8 ~ embodiment 15.
Figure 57 is the front view of the indoor set that embodiments of the present invention 16 are shown.
Indoor set 100 and indoor set 100 difference of embodiment 12 of present embodiment 16 are only the structures of Air Blast fan control unit 174.In addition, the structure shown in the structure of Air Blast fan control unit 174 and Figure 55 of embodiment 15 is identical
Then, the action of indoor set 100 is described.
Identical with embodiment 12, when indoor set 100 action, the impeller of fan 20A ~ 20C rotates, the air in the upside suction chamber of fan 20A ~ 20C, and carries air on the downside of fan 20A ~ 20C, produces air-flow thus.Be accompanied by this, near the blow-off outlet of fan 20A ~ 20C, produce operating sound (noise), this sound is propagated to downstream.The air carried by fan 20A ~ 20C passes through in wind path, and heat exchanger 50 is carried.Such as, when carrying out cooling operation, from the cold-producing medium of pipe arrangement heat exchanger 50 transporting low temperature be connected with off-premises station (not shown).The air that heat exchanger 50 is carried is become cold air, directly from blow-off outlet 3 to indoor releasing by the refrigerant cools of flowing in heat exchanger 50.
In addition, the action of noise elimination mechanism D ~ F is also identical with embodiment 12, carry out action with make by noise/soundproof effect detect noise that microphone 211 ~ 213 detects close to zero mode export control sound, restraint speckle as a result/soundproof effect detects the noise of microphone 211 ~ 213.
Present embodiment 16 indoor set 100 when, except the noise from fan 20B, the noise (crosstalk noise composition) sent from adjacent fan 20A, 20C also enters noise/soundproof effect and detects microphone 213.On the other hand, by noise/soundproof effect detect crosstalk noise composition that microphone 211,212 detects with detected by noise/soundproof effect compared with crosstalk noise composition that microphone 213 detects little.Because noise/soundproof effect detection microphone 211,212 only has an adjacent fan 20(fan 20B).Therefore, compared with noise elimination mechanism F, the soundproof effect of noise elimination mechanism D, E improves.
The fan of fan 20A ~ 20C controls separately almost identical with the content illustrated in embodiment 15.The difference that the fan of present embodiment 16 controls separately to control separately with the fan that illustrates in embodiment 15 is, the S1 ~ S3 being input to sound deadening capacity computing unit 138 is the digital value being detected the sound pressure level that microphone 211 ~ 213 detects by noise/soundproof effect.In addition, the fan of present embodiment 16 controls separately to walk raising separately with the fan that illustrates in embodiment 15.Therefore, in the indoor set 100 of present embodiment 16, by the wind path of indoor set 100 is divided into multiple region, compared with the structure of Figure 57, noise can be reduced further.On the other hand, when existence does not arrange the fan of noise elimination mechanism, reduce the rotating speed of this fan 20, the noise not arranging the region of noise elimination mechanism thus reduces, and can obtain same effect.In addition, in Figure 51 and Figure 52, insert dividing plate in the whole region of wind path, but also can be, such as, only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.
Therefore, the fan of Air Blast fan control unit 174 controls separately rotating speed determining means 134C according to the sound deadening capacity calculated by sound deadening capacity computing unit 138 and the Air Blast fan information stored in memory 132, determine the rotating speed of fan as follows, improve the rotating speed of the fan higher with being detected sound relevance that microphone detects by noise/soundproof effect that sound deadening capacity is larger, and reduce and detected by noise/soundproof effect that sound deadening capacity is less the rotating speed of the higher fan of sound relevance that microphone detects.Now, also can be, with the air quantity having carried out obtaining when fan controls separately become control with same rotational speed time identical air quantity mode, determine fan 20A ~ 20C rotating speed separately.
Such as, in the indoor set 100 of present embodiment 16, the fan supposing to export the noise the highest with being detected sound relevance that microphone 211 detects by noise/soundproof effect is fan 20A, the fan exporting the noise the highest with being detected sound relevance that microphone 212 detects by noise/soundproof effect is fan 20C, exports and the fan that detects the highest noise of sound relevance that microphone 213 detects by noise/soundproof effect is fan 20B.And suppose that the sound deadening capacity of noise/soundproof effect detection microphone 211 is-5dB, the sound deadening capacity that noise/soundproof effect detects microphone 212 is-5dB, and the sound deadening capacity that noise/soundproof effect detects microphone 213 is-2dB.In this situation, fan controls separately rotating speed determining means 134C to improve the rotating speed of fan 20A, 20C, and the mode reducing the rotating speed of fan 20B determines the rotating speed of each fan.Air quantity and rotating speed have proportionate relationship, thus such as, when the such structure of Figure 57, by the rotating speed of fan 20A and fan 20C is improved 10%, and the rotating speed of fan 20B is reduced by 20% obtain identical air quantity.
In addition, the determining method of the rotating speed of above-mentioned fan 20A ~ 20C is only an example.Such as, in the indoor set 100 of present embodiment 16, the fan supposing to export the noise the highest with being detected sound relevance that microphone 211 detects by noise/soundproof effect is fan 20A, the fan exporting the noise the highest with being detected sound relevance that microphone 212 detects by noise/soundproof effect is fan 20C, exports and the fan that detects the highest noise of sound relevance that microphone 213 detects by noise/soundproof effect is fan 20B.And suppose that the sound deadening capacity of noise/soundproof effect detection microphone 211 is-5dB, the sound deadening capacity that noise/soundproof effect detects microphone 212 is-3dB, and the sound deadening capacity that noise/soundproof effect detects microphone 213 is-2dB.In this situation, Ke Yishi, to improve the rotating speed of fan 20A, reduces the rotating speed of fan 20B, and maintains the mode of the rotating speed of fan 20C, determine the rotating speed of each fan.Namely, can be, to improve the rotating speed that the soundproof effect maximum with sound deadening capacity detects the higher fan 20A of microphone 191 relevance, reduce the rotating speed that the soundproof effect minimum with sound deadening capacity detects the higher fan 20B of microphone 193 relevance, and maintain the mode not belonging to the rotating speed of the fan 20C of above situation, determine the rotating speed of each fan.
When have input movement information signal (signals of such as silent mode etc.) that will carry out fan and control separately from remote controller 280, by switching SW135, the rotation control signal controlled from same rotational speed switches to the rotation control signal that fan controls separately, and is exported from control device 281 to fan 20A ~ 20C by this rotation control signal.The rotation control signal exported from control device 281 is imported into motor driver 282A ~ 282C, controls fan 20A ~ 20C for the rotating speed corresponding to rotation control signal.
At this, as mentioned above, present embodiment 16 indoor set 100 when, due to the size of the crosstalk noise composition from adjacent fan, compared with detecting the region near microphone 213 with noise/soundproof effect, the region sound deadening capacity that noise/soundproof effect detects near microphone 211,212 increases.On the other hand, the region sound deadening capacity that noise/soundproof effect detects near microphone 213 reduces.Therefore, in the indoor set 100 of present embodiment 16 with multiple fan 20A ~ 20C, improve and export the rotating speed that the soundproof effect larger with sound deadening capacity detects fan 20A, 20C of the higher noise of microphone 191,192 relevance, and reduce the rotating speed that the output soundproof effect less with sound deadening capacity detects the fan 20B of the higher noise of microphone 193 relevance.
Consequently, the indoor set 100 of present embodiment 16 improves further at the higher region soundproof effect of soundproof effect, the noise region lower at soundproof effect reduces, thus with use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, the noise sent from blow-off outlet 3 entirety can being reduced.In addition, the rotating speed of the mode that when indoor set 100 of present embodiment 16 is to control with same rotational speed, air quantity is constant to multiple fan 20A ~ 20C controls individually, can suppress the reduction of aeroperformance thus.
In addition, in the indoor set 100 of present embodiment 16, same with the indoor set 100 shown in Figure 51 and Figure 52 of embodiment 12, the wind path of indoor set 100 is divided into multiple region, soundproof effect can be improved further thus.
Namely, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, can make the noise separation sent from fan 20A ~ 20C regional, noise elimination mechanism D only reduces the noise sent from fan 20A, noise elimination mechanism E only reduces the noise sent from fan 20C, and noise elimination mechanism F only reduces the noise sent from fan 20B.Therefore, noise/soundproof effect detects crosstalk noise composition (noise from the fan the being located at adjacent stream sends) reduction that microphone 211 ~ 213 detects.
In addition, wind path, close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, and thus soundproof effect improves further.Therefore, in the indoor set 100 of present embodiment 16, by the wind path of indoor set 100 is divided into multiple region, compared with the structure of Figure 57, noise can be reduced further.On the other hand, when existence does not arrange the fan of noise elimination mechanism, reduce the rotating speed of this fan 20, the noise not arranging the region of noise elimination mechanism thus reduces, and can obtain same effect.In addition, in Figure 51 and Figure 52, insert dividing plate in the whole region of wind path, but also can be, such as, only at the upstream side of heat exchanger 50 or only in the downstream of heat exchanger 50, by a part for baffle for separating wind path.
In addition, in present embodiment 16, noise/soundproof effect is detected the downstream that microphone 211 ~ 213 is arranged on control loudspeaker 181 ~ 183, but also noise/soundproof effect detection microphone 211 ~ 213 can be set at the upstream side of control loudspeaker 181 ~ 183.In addition, in present embodiment 16,3 control loudspeakers are set respectively, noise/soundproof effect detects microphone and signal processing apparatus, but be not limited to this quantity.
In addition, in present embodiment 16, form Air Blast fan control unit 174 by the CPU131 in control device 281, but also can pass through LSI(Large Scale Integration: large scale integrated circuit) or FPGA(Field Programmable Gate Array: field programmable gate array) etc. hardware form Air Blast fan control unit 174.In addition, the structure of Air Blast fan control unit 174 is also not limited to the structure shown in Figure 55.
In addition, in present embodiment 16, Air Blast fan control unit 174 is configured to, improve the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by noise/soundproof effect that sound deadening capacity is larger, and, reduce the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by noise/soundproof effect that sound deadening capacity is less, but also can be configured to only carry out a side wherein.
In addition, in present embodiment 16, noise/soundproof effect is used to detect the parameter of sound deadening capacity as the rotating speed of control fan of microphone 211 ~ 213, but, other amount can certainly be used to be used as the parameter of the rotating speed controlling fan.Also can be, such as, calculate the mean value being detected the sound pressure level that microphone 211 ~ 213 detects respectively by noise/soundproof effect, reduce the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by noise/soundproof effect that the mean value of sound pressure level is maximum.In addition, also can be, such as, calculate the mean value being detected the sound pressure level that microphone 211 ~ 213 detects respectively by noise/soundproof effect, improve the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by noise/soundproof effect that the mean value of sound pressure level is minimum.Above two sides can certainly be carried out.
Above, in the indoor set 100 of present embodiment 16, configure multiple fan 20A ~ 20C, arranging the control device 281(controlled individually the rotating speed of fan 20A ~ 20C is more particularly Air Blast fan control unit 174).Air Blast fan control unit 174 controls, make to detect in the sound deadening capacity of microphone 211 ~ 213 at noise/soundproof effect, improve the rotating speed of the fan exporting the noise higher with being detected sound relevance that microphone detects by noise/soundproof effect that sound deadening capacity is larger, and reduce output and detected the rotating speed of fan of the higher noise of sound relevance that microphone detects by noise/soundproof effect that sound deadening capacity is less.Therefore, the region soundproof effect that sound deadening capacity is larger improves further, and the noise region that sound deadening capacity is less reduces.Therefore, with in the noise elimination mechanism of identical structure, use the indoor set of single fan or do not carry out compared with indoor set that fan controls separately, noise to be reduced further.
In addition, in the indoor set 100 of present embodiment 16, determine to export the fan of the noise higher with being detected sound relevance that microphone detects by noise/soundproof effect that sound deadening capacity is larger, even if thus when employing the different multiple fan 20A ~ 20C of exported sound pressure level, also rotating speed control can be carried out exactly.
In addition, Air Blast fan control unit 174 controls fan 20A ~ 20C rotating speed separately, make to have carried out when fan controls separately identical with the air quantity exported from blow-off outlet 3 carried out when same rotational speed controls, thus can reduce noise and not make aeroperformance decline.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, the each self-separation of noise sent from fan 20A ~ 20C can be made, noise elimination mechanism D only reduces the noise sent from fan 20A, noise elimination mechanism E only reduces the noise sent from fan 20C, and noise elimination mechanism F only reduces the noise sent from fan 20B.Therefore, in each region, the crosstalk noise composition caused by the noise outputting to adjacent region reduces.
In addition, by the wind path of indoor set 100 being divided into multiple region with dividing plate 90,90a, making wind path close to pipe configuration, thus can catch noise in one dimension.Therefore, impartial in the phase place of the noise of indoor set 100 internal delivery, phase error during control interference of sound is reduced, thus compared with the structure of Figure 57, higher noise reduction can be obtained.On the other hand, when existence does not arrange the region of noise elimination mechanism, reduce the rotating speed not arranging the fan of noise elimination mechanism, the noise in this region reduces thus, can obtain soundproof effect equally.
In addition, in present embodiment 16, noise sensing microphones 161 ~ 163 and soundproof effect are detected microphone 191 ~ 193 and be integrated into noise/soundproof effect and detect microphone 211 ~ 213, thus can reduce the quantity of microphone, parts count can be cut down, a step-down low cost of going forward side by side.
Label declaration
1: housing, 1b: back part, 2: suction inlet, 3: blow-off outlet, 5: horn mouth, 5a: top, 5b: central portion, 5c: bottom, 6: nozzle, 10: filter, 15: finger guard device, 16: support of motor, 17: fixed part, 18: support component, 20(20A ~ 20C): fan, 20a: rotating shaft, 21: wheel hub, 25: impeller, 30: fan motor, 50: heat exchanger, 50a: line of symmetry, 51: front face side heat exchanger, 55: rear side heat exchanger, 56: fin, 57: heat-transfer pipe, 58: heat exchanger fixed part, 70: blade up and down, 90: dividing plate, 90a: dividing plate, 100: indoor set, 110: front face side coagulates water pond, 111: drainage path, 111a: tongue, 115: rear side coagulates water pond, 116: connector, 117: drainpipe, 121: multiplier, 122: adder, 123: delay element, 124: multiplier, 130: input part, 131:CPU, 132: memory, 133: same rotational speed determining means, 134(134A, 134B, 134C): fan controls separately rotating speed determining means, 135:SW, 136: equalization unit, 137: coherence's arithmetic element, 138: sound deadening capacity computing unit, 139: sound pressure level memory cell before controlling, 140: difference engine, 151: microphone amplifier, 152:A/D converter, 153: weighted units, 154:D/A converter, 155: amplifier, 158, 160:FIR wave filter, 159:LMS algorithm device, 161 ~ 163: noise sensing microphones, 171 ~ 174: Air Blast fan control unit, 181 ~ 183: control loudspeaker, 191 ~ 193: soundproof effect detects microphone, 201 ~ 208: signal processing apparatus, 211 ~ 213: noise/soundproof effect detects microphone, 270: wall components, 280: remote controller, 281: control device, 282A ~ 282C: motor driver.

Claims (34)

1. an air conditioner, the feature of described air conditioner is, it has:
Housing, it is formed with suction inlet on top, on the downside of front face, be formed with blow-off outlet;
Multiple Air Blast fan, it is disposed side by side on the downstream of the described suction inlet in described housing;
Heat exchanger, it is arranged on the downstream of the described fan in described housing and at the upstream side of described blow-off outlet, carries out heat exchange to the air blown out from described fan and cold-producing medium;
Noise detection apparatus, it detects the noise sent from described fan;
Control voice output, it exports the control sound making described noise reduction;
Soundproof effect checkout gear, it detects the soundproof effect of described control sound;
Control sound generating apparatus, it, according to the testing result of described noise detection apparatus and described soundproof effect checkout gear, makes described control voice output export described control sound; And
Control device, it carries out rotating speed control individually to multiple described fan,
Described control device, according to soundproof effect when making described control sound and the noise interference sent from described fan, controls the rotating speed of multiple described fan.
2. air conditioner according to claim 1, is characterized in that,
Described control device, based on the soundproof effect detected by described soundproof effect checkout gear, according to the relevance of the sound detected by described soundproof effect checkout gear and described fan, changes the rotating speed of described fan.
3. air conditioner according to claim 2, is characterized in that,
Described control device carry out following two kinds of rotating speeds control in the rotating speed of at least one party control: improves the rotating speed of rotating speed exported with by the described fan detecting the noise that sound relevance that the described soundproof effect checkout gear of large soundproof effect detects is the highest and control, and the rotating speed of the rotating speed reducing the described fan exporting the noise minimum with the sound relevance detected by this soundproof effect checkout gear controls.
4. the air conditioner according to Claims 2 or 3, is characterized in that,
Described control device carries out following rotating speed control: reduce export with by the rotating speed of described fan detecting the noise that sound relevance that the described soundproof effect checkout gear of little soundproof effect detects is the highest.
5. air conditioner according to claim 2, is characterized in that,
Described air conditioner has multiple described soundproof effect checkout gear, the sound pressure level that described control device detects according to multiple described soundproof effect checkout gear, carry out following two kinds of rotating speeds control in the rotating speed of at least one party control: improve the rotating speed of rotating speed exported with by the described fan detecting the noise that sound relevance that the described soundproof effect checkout gear of minimal sound pressure levels detects is the highest and control, with reduce the rotating speed of rotating speed exported with by the described fan detecting the noise that sound relevance that the described soundproof effect checkout gear of maximum sound pressure level detects is the highest and control.
6. air conditioner according to claim 2, is characterized in that,
Described air conditioner has multiple described noise detection apparatus and multiple described soundproof effect checkout gear,
Described control device calculates the coherent value of the detected value of described noise detection apparatus and the detected value of described soundproof effect checkout gear, carry out following two kinds of rotating speeds control in the rotating speed of at least one party control: the rotating speed improving the rotating speed of the described fan exporting the noise the highest with the sound relevance detected by the described soundproof effect checkout gear that coherent value is maximum controls, and the rotating speed of the rotating speed reducing the described fan exporting the noise the highest with the sound relevance detected by the described soundproof effect checkout gear that coherent value is minimum controls.
7. air conditioner according to claim 1 and 2, is characterized in that,
Described control device has storage and the memory of described soundproof effect checkout gear apart near described fan, carry out following two kinds of rotating speeds control in the rotating speed of at least one party control: improve and store controlling with the rotating speed of described soundproof effect checkout gear apart from the rotating speed of near described fan in which memory, and reduce storage controlling with the rotating speed of described soundproof effect checkout gear apart from the rotating speed of the described fan beyond near described fan in which memory.
8. air conditioner according to claim 1 and 2, is characterized in that,
Described control device has storage and the memory of described soundproof effect checkout gear apart near described fan, the rotating speed carrying out at least one party in following two kinds of rotating speeds control controls: reduce and detect that the described soundproof effect checkout gear of high sound pressure level controls apart from the rotating speed of the rotating speed of near described fan, and improve and detect that the described soundproof effect checkout gear of low sound pressure levels controls apart from the rotating speed of the rotating speed of near described fan.
9. air conditioner according to claim 1 and 2, is characterized in that,
Described control device has storage and the memory of described soundproof effect checkout gear apart near described fan, calculate the coherent value of the detected value of described noise detection apparatus and the detected value of described soundproof effect checkout gear, carry out following two kinds of rotating speeds control in the rotating speed of at least one party control: reduce the described soundproof effect checkout gear low with coherent value and controls apart from the rotating speed of the rotating speed of near described fan, and raising and the high described soundproof effect checkout gear of coherent value control apart from the rotating speed of the rotating speed of near described fan.
10. air conditioner according to claim 1 and 2, is characterized in that,
Multiple region is divided into by described housing by dividing plate.
11. air conditioners according to claim 10, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device carries out following rotating speed control: in multiple described region, reduces the rotating speed of the described fan be located in the described region not arranging described soundproof effect checkout gear.
12. air conditioners according to claim 10, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device carries out following rotating speed control: in multiple described region, improves the rotating speed of the described fan be located in the described region being provided with described soundproof effect checkout gear.
13. air conditioners according to claim 1 and 2, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device, to make the mode that air quantity is equal with the air quantity carried out before this rotating speed control, carries out rotating speed control individually to multiple described fan.
14. 1 kinds of air conditioners, is characterized in that, described air conditioner has:
Housing, it is formed with suction inlet on top, has and be formed with blow-off outlet on the downside of front face;
Multiple Air Blast fan, it is disposed side by side on the downstream of the described suction inlet in described housing;
Heat exchanger, it is arranged on the downstream of the described fan in described housing and at the upstream side of described blow-off outlet, carries out heat exchange to the air blown out from described fan and cold-producing medium;
Control voice output, it exports the control sound making the noise reduction sent from described fan;
Noise/soundproof effect checkout gear, it detects described noise, and detects the soundproof effect of described control sound;
Control sound generating apparatus, it is according to the testing result of described noise/soundproof effect checkout gear, makes described control voice output export described control sound; And
Control device, it carries out rotating speed control individually to multiple described fan,
Described control device, according to soundproof effect when making described control sound and the noise interference sent from described fan, controls the rotating speed of multiple described fan.
15. air conditioners according to claim 14, is characterized in that,
Described control device, based on the soundproof effect detected by described noise/soundproof effect checkout gear, according to the relevance of the sound detected by described noise/soundproof effect checkout gear and described fan, changes the rotating speed of described fan.
16. air conditioners according to claim 15, is characterized in that,
Described control device carry out following two kinds of rotating speeds control in the rotating speed of at least one party control: improves the rotating speed of rotating speed exported with by the described fan detecting the noise that sound relevance that the described noise/soundproof effect checkout gear of large soundproof effect detects is the highest and control, and the rotating speed of the rotating speed reducing the described fan exporting the noise minimum with the sound relevance detected by this noise/soundproof effect checkout gear controls.
17. air conditioners according to claim 15 or 16, is characterized in that,
Described control device carries out following rotating speed control: reduce export with by the rotating speed of described fan detecting the noise that sound relevance that the described noise/soundproof effect checkout gear of little soundproof effect detects is the highest.
18. air conditioners according to claim 15, is characterized in that,
Described air conditioner has multiple described noise/soundproof effect checkout gear, the sound pressure level that described control device detects according to multiple described noise/soundproof effect checkout gear, carry out following two kinds of rotating speeds control in the rotating speed of at least one party control: improve the rotating speed of rotating speed exported with by the described fan detecting the noise that sound relevance that the described noise/soundproof effect checkout gear of minimal sound pressure levels detects is the highest and control, with reduce export with by the rotating speed of described fan detecting the noise that sound relevance that the described noise/soundproof effect checkout gear of maximum sound pressure level detects is the highest.
19. air conditioners according to claims 14 or 15, is characterized in that,
Described control device has storage and the memory of described noise/soundproof effect checkout gear apart near described fan, carry out following two kinds of rotating speeds control in the rotating speed of at least one party control: improve and store controlling with the rotating speed of described noise/soundproof effect checkout gear apart from the rotating speed of near described fan in which memory, and reduce storage controlling with the rotating speed of described noise/soundproof effect checkout gear apart from the rotating speed of the described fan beyond near described fan in which memory.
20. air conditioners according to claims 14 or 15, is characterized in that,
Described control device has storage and the memory of described noise/soundproof effect checkout gear apart near described fan, the rotating speed carrying out at least one party in following two kinds of rotating speeds control controls: reduce and detect that the described noise/soundproof effect checkout gear of high sound pressure level controls apart from the rotating speed of the rotating speed of near described fan, and improve and detect that the described noise/soundproof effect checkout gear of low sound pressure levels controls apart from the rotating speed of the rotating speed of near described fan.
21. air conditioners according to claims 14 or 15, is characterized in that,
Multiple region is divided into by described housing by dividing plate.
22. air conditioners according to claim 21, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device carries out following rotating speed control: in multiple described region, reduces the rotating speed of the described fan be located in the described region not arranging described noise/soundproof effect checkout gear.
23. air conditioners according to claim 21, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device carries out following rotating speed control: in multiple described region, improves the rotating speed of the described fan be located in the described region being provided with described noise/soundproof effect checkout gear.
24. air conditioners according to claims 14 or 15, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device, to make the mode that air quantity is equal with the air quantity carried out before this rotating speed control, carries out rotating speed control individually to multiple described fan.
25. 1 kinds of air conditioners, is characterized in that, described air conditioner has:
Housing, it is formed with suction inlet on top, on the downside of front face, be formed with blow-off outlet;
Multiple Air Blast fan, it is disposed side by side on the downstream of the described suction inlet in described housing;
Heat exchanger, it is arranged on the downstream of the described fan in described housing and at the upstream side of described blow-off outlet, carries out heat exchange to the air blown out from described fan and cold-producing medium;
Noise detection apparatus, the noise that its described fan detecting two ends from the length direction being configured in described housing sends;
Control voice output, it is configured in the two ends on the length direction of described housing, exports the control sound making described noise reduction;
Soundproof effect checkout gear, it is configured in the two ends of described housing, detects the soundproof effect when noise sent for the described fan from the two ends being configured in described housing exports described control sound;
Control sound generating apparatus, it, according to the testing result of described noise detection apparatus and described soundproof effect checkout gear, makes described control voice output export described control sound; And
Control device, it carries out rotating speed control individually to multiple described fan,
The rotating speed that described control device carries out improving the rotating speed of the described fan in the configuration of the two ends of described housing controls, and be reduced in described housing two ends configuration described fan beyond the rotating speed of rotating speed of described fan control in the rotating speed of at least one party control.
26. air conditioners according to claim 25, is characterized in that,
Multiple region is divided into by described housing by dividing plate.
27. air conditioners according to claim 26, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device carries out following rotating speed control: in multiple described region, reduces the rotating speed of the described fan be located in the described region not arranging described soundproof effect checkout gear.
28. air conditioners according to claim 26 or 27, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device carries out following rotating speed control: in multiple described region, improves the rotating speed of the described fan be located in the described region being provided with described soundproof effect checkout gear.
29. air conditioners according to claim 25 or 26, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device, to make the mode that air quantity is equal with the air quantity carried out before this rotating speed control, carries out rotating speed control individually to multiple described fan.
30. 1 kinds of air conditioners, is characterized in that, described air conditioner has:
Housing, it is formed with suction inlet on top, on the downside of front face, be formed with blow-off outlet;
Multiple Air Blast fan, it is disposed side by side on the downstream of the described suction inlet in described housing;
Heat exchanger, it is arranged on the downstream of the described fan in described housing and at the upstream side of described blow-off outlet, carries out heat exchange to the air blown out from described fan and cold-producing medium;
Control voice output, it is configured in the two ends on the length direction of described housing, exports the control sound making the noise reduction sent from described fan;
Noise/soundproof effect checkout gear, it is configured in the two ends of described housing, the noise that the described fan detecting two ends from the length direction being configured in described housing sends, and detect the soundproof effect when noise sent for the described fan from the two ends being configured in described housing exports described control sound;
Control sound generating apparatus, it is according to the testing result of described noise/soundproof effect checkout gear, makes described control voice output export described control sound; And
Control device, it carries out rotating speed control individually to multiple described fan,
The rotating speed that described control device carries out improving the rotating speed of the described fan in the configuration of the two ends of described housing controls, and be reduced in described housing two ends configuration described fan beyond the rotating speed of rotating speed of described fan control in the rotating speed of at least one party control.
31. air conditioners according to claim 30, is characterized in that,
Multiple region is divided into by described housing by dividing plate.
32. air conditioners according to claim 31, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device carries out following rotating speed control: in multiple described region, reduces the rotating speed of the described fan be located in the described region not arranging described noise/soundproof effect checkout gear.
33. air conditioners according to claim 31 or 32, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device carries out following rotating speed control: in multiple described region, improves the rotating speed of the described fan be located in the described region being provided with described noise/soundproof effect checkout gear.
34. air conditioners according to claim 30 or 31, is characterized in that,
When carrying out rotating speed to multiple described fan individually and controlling, described control device, to make the mode that air quantity is equal with the air quantity carried out before this rotating speed control, carries out rotating speed control individually to multiple described fan.
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Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104344535B (en) * 2013-08-02 2017-01-25 广东美的制冷设备有限公司 Method and device for adaptively adjusting frequency of conditioner motor and air conditioner
CN105115112B (en) * 2015-09-18 2018-02-27 珠海格力电器股份有限公司 Control method and device of air conditioning unit
CN105241013A (en) * 2015-10-23 2016-01-13 青岛海尔空调器有限总公司 Control method and device for air conditioner and air conditioner
CN105674534B (en) * 2016-03-25 2018-09-14 海信（山东）空调有限公司 Air-conditioning active noise reducing device and noise-reduction method
WO2017187480A1 (en) * 2016-04-25 2017-11-02 三菱電機株式会社 Air conditioner
JP6414197B2 (en) * 2016-12-28 2018-10-31 ダイキン工業株式会社 Axial fan and blower unit
CN107255342B (en) * 2017-06-15 2019-10-01 青岛海尔空调器有限总公司 A kind of control method of air conditioner indoor unit
JP2019164263A (en) 2018-03-20 2019-09-26 株式会社東芝 Noise reduction device
CN108593271A (en) * 2018-03-26 2018-09-28 珠海格力电器股份有限公司 Silencer measuring device
CN108981131B (en) * 2018-06-06 2020-07-03 珠海格力电器股份有限公司 Method for reducing noise of loudspeaker in air conditioner remote control process
GB2582372B (en) * 2019-03-22 2021-08-18 Dyson Technology Ltd Noise control
GB2582373B (en) 2019-03-22 2021-08-11 Dyson Technology Ltd Noise control
CN112503716B (en) * 2020-12-11 2022-05-17 广东美的暖通设备有限公司 Air conditioning equipment and control method thereof, design method of water receiving container and storage medium
CN113049287A (en) * 2021-04-06 2021-06-29 珠海格力智能装备有限公司 Air conditioner detection system and air conditioner detection method
CN114413440B (en) * 2022-01-04 2023-07-04 宁波奥克斯电气股份有限公司 Air conditioner control method, air conditioner and storage medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1621825A2 (en) * 2001-04-20 2006-02-01 Lg Electronics Inc. Indoor unit for air conditioner

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347186Y2 (en) * 1985-12-13 1991-10-07
JPH04281125A (en) * 1991-02-07 1992-10-06 Mitsubishi Electric Corp Muffler and muffling
JPH051914U (en) * 1991-03-11 1993-01-14 三菱電機株式会社 Active control air conditioner
JPH051914A (en) * 1991-06-25 1993-01-08 Pioneer Electron Corp Compensating magnetized vector
JP3072174B2 (en) * 1992-02-19 2000-07-31 株式会社日立製作所 Active silencer in three-dimensional space
JPH08146970A (en) * 1994-11-25 1996-06-07 Hitachi Ltd Electronic apparatus mounted with active silencer
JPH09264564A (en) * 1996-03-26 1997-10-07 Mitsubishi Heavy Ind Ltd Heat exchanger
JPH10197034A (en) * 1996-12-29 1998-07-31 Sanyo Electric Co Ltd Muffler of air conditioner
JP3973807B2 (en) * 1999-10-12 2007-09-12 松下エコシステムズ株式会社 Bathroom dryer
JP2004053235A (en) * 2002-07-22 2004-02-19 Kiyoshi Yanagimachi Air conditioner
JP4252340B2 (en) * 2003-03-20 2009-04-08 東芝キヤリア株式会社 refrigerator
JP2004332973A (en) * 2003-05-01 2004-11-25 Hitachi Ltd Air conditioning system and air conditioning unit
JP2004340431A (en) * 2003-05-14 2004-12-02 Nakano Refrigerators Co Ltd Condensing unit, and showcase with built-in freezer
JP2005201565A (en) * 2004-01-16 2005-07-28 Toshiba Kyaria Kk Indoor unit of air conditioner
KR100714592B1 (en) * 2005-06-28 2007-05-07 엘지전자 주식회사 Inner-door unit of air-conditioner
JP2007093068A (en) * 2005-09-28 2007-04-12 Sanyo Electric Co Ltd Heat exchanging device
JP5425106B2 (en) * 2009-02-05 2014-02-26 三菱電機株式会社 Air conditioner indoor unit and air conditioner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1621825A2 (en) * 2001-04-20 2006-02-01 Lg Electronics Inc. Indoor unit for air conditioner

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