EP2602562B1 - Indoor unit for air conditioner, and air conditioner - Google Patents

Indoor unit for air conditioner, and air conditioner Download PDF

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Publication number
EP2602562B1
EP2602562B1 EP10855571.5A EP10855571A EP2602562B1 EP 2602562 B1 EP2602562 B1 EP 2602562B1 EP 10855571 A EP10855571 A EP 10855571A EP 2602562 B1 EP2602562 B1 EP 2602562B1
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EP
European Patent Office
Prior art keywords
heat exchanger
fan
indoor unit
air
noise
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10855571.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2602562A4 (en
EP2602562A1 (en
Inventor
Shoji Yamada
Tomoya Fukui
Kenichi Sakoda
Kunihiko Kaga
Satoshi Michihata
Takeshi Mori
Shinichi Suzuki
Akira Takamori
Takuya Mukoyama
Mitsuhiro Shirota
Yoshinori Tanikawa
Takashi Matsumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP2602562A1 publication Critical patent/EP2602562A1/en
Publication of EP2602562A4 publication Critical patent/EP2602562A4/en
Application granted granted Critical
Publication of EP2602562B1 publication Critical patent/EP2602562B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24F13/20—Casings or covers
    • 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
    • F24F13/20—Casings or covers
    • F24F2013/205—Mounting a ventilator fan therein
    • 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
    • F24F2013/242—Sound-absorbing material
    • 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

Definitions

  • the indoor unit 100 includes a controller 281 which controls the rotation speed of the fan 20, the directions (angles) of upper and lower vanes 70 and right and left vanes 80, which will be discussed later, etc.
  • the controller 281 may not be shown.
  • the bell mouth 5 of Embodiment 1 shown in FIG. 1 is formed in the shape of a duct having a height higher than that of the impeller of the fan 20.
  • the bell mouth 5 is not restricted to this configuration. Instead, the bell mouth 5 may be formed as a semi-opened bell mouth having a height lower than that of the impeller of the fan 20.
  • the bell mouth 5 may be constituted by only the top and bottom portions 5a and 5c at the ends without the straight part of the middle portion 5b shown in FIG. 1 .
  • the divided flow channels are each formed in a substantially quadrilateral shape having a side L1 and a side L2, as viewed from above. That is, the widths of the divided flow channels are L1 and L2. Accordingly, the airflow generated by the fan 20 which is disposed within the substantially quadrilateral shape defined by the widths L1 and L2 reliably passes through the heat exchanger 50, which is positioned in an area surrounded by the widths L1 and L2, on the downstream side the fan 20.
  • the partition board 90 may be divided into two boards at a position of a front-side heat exchanger 51 and at a position of a back-side heat exchanger 55. It is preferable that there is no gap between joint portions of the divided boards forming the partition board 90. By dividing the partition board 90 into a plurality of boards, the mountability of the partition board 90 is improved.
  • the heat exchanger 50 for use in the indoor unit 100 according to Embodiment 1 is disposed on the downstream side of the fan 20.
  • a finned tube heat exchanger for example, may be appropriately used.
  • the heat exchanger 50 is divided, with respect to a symmetric line 50a, as viewed from a right-side longitudinal cross section.
  • the symmetric line 50a serves to divide the installation range of the heat exchanger 50 viewed from this cross section into right and left sides with respect to the substantially center of the installation range.
  • the indoor unit 100 includes a plurality of fans 20, it may be heavy. If the indoor unit 100 is heavy, the strength of a wall on which the indoor unit 100 is mounted is required, which is a restriction on mounting the indoor unit 100. Accordingly, it is desirable to reduce the weight of the heat exchanger 50. Additionally, in the indoor unit 100, since the fan 20 is disposed on the upstream side of the heat exchanger 50, the height of the indoor unit 100 becomes high, which may also be a restriction on mounting the indoor unit 100. It is thus desirable to reduce the weight of the heat exchanger 50. It is also desirable to reduce the size of the heat exchanger 50.
  • the heat exchanger 50 by the use of a finned tube heat exchanger as the heat exchanger 50 (front-side heat exchanger 51 and back-side heat exchanger 55), the size of the heat exchanger 50 is reduced.
  • the heat exchanger 50 according to Embodiment 1 includes a plurality of fins 56 stacked on one another with a predetermined gap therebetween and a plurality of heat exchanger pipes 57 passing through these fins 56.
  • the fins 56 are stacked on one another in the horizontal direction (in the direction perpendicular to the plane of FIG. 1 ) of the casing 1.
  • FIG. 3 is a perspective view illustrating the indoor unit according to Embodiment 1 of the present invention, as viewed from the right side of the front portion.
  • FIG. 4 is a perspective view illustrating this indoor unit as viewed from the right side of the back portion.
  • FIG. 5 is a perspective view illustrating this indoor unit as viewed from the left side of the front portion.
  • FIG. 6 is a perspective view illustrating a drain pan according to Embodiment 1 of the present invention.
  • the right side of the indoor unit 100 is shown as a cross section in FIGs. 3 and 4
  • the left side of the indoor unit 100 is shown as a cross section in FIG. 5 .
  • the noise-cancellation effect detecting microphone 191 is fixed at a position at which it can avoid airflow so that it will not be exposed to air blown out of the air outlet 3.
  • the signal processor 201 is a control sound generating device that causes the control speaker 181 to output control sound on the basis of detection results obtained by the noise detecting microphone 161 and the noise-cancellation effect detecting microphone 191.
  • the signal processor 201 is stored in, for example, the controller 281.
  • FIGs. 13 through 16 are perspective views illustrating examples in which the fan motor is mounted on a fixing member of the motor stay according to Embodiment 2.
  • FIG. 22 is a front view illustrating another example of a fan according to Embodiment 5.
  • FIG. 29 is a longitudinal sectional view illustrating an example of a fan according to Embodiment 9 of the present invention.
  • the fan 20 may be formed, for example, in the following manner.
  • the same functions and configurations as those of Embodiment 1 through Embodiment 9 are designated by like reference numerals.
  • a leakage flow 253 shown in FIG. 35(b) is produced, thereby reducing the efficiency of the fan. More specifically, the leakage flow 253 is produced on the outer periphery edge of the blade 303 from the air discharge side, which is a high pressure, to the air suction side, which is a low pressure, thereby reducing the efficiency of the fan.
  • the sealing performance between the impeller 25 and the housing 26 can be enhanced, thereby further improving the efficiency of the fan 20.
  • the insulating layer 257 may be provided on the outer periphery of the rotor 31.
  • the insulating layer 257 may be provided on the inner periphery of the stator 40.
  • the insulating layer 257 may be provided both on the outer periphery of the rotor 31 and on the inner periphery of the stator 40.
  • FIG. 41 is an enlarged view (longitudinal sectional view) illustrating the essential part of an example of a fan according to Embodiment 13.
  • the solid arrows shown in FIG. 41 indicate the direction of airflow.
  • a step portion is formed in a range of the housing 26 which opposes the forward end of the discharge guide 256.
  • Embodiment 19 through Embodiment 21 a plurality of fans 20 having the same shape (same specifications) are provided, and the rotation speeds of the fans 20 are changed, thereby individually controlling the amounts of airflow of the fans 20.
  • this is only an example, and by the use of the fans 20 having different levels of air-sending performance (for example, fans 20 having different fan diameters, boss ratios, or angles of incidence), advantages similar to those of Embodiment 19 through Embodiment 21 are obtained.
  • FIG. 67 shows schematic views illustrating examples of the shapes of the heat exchanger 50.
  • FIG. 67 shows the heat exchanger 50 as viewed from a right-side longitudinal cross section.
  • the heat exchangers 50 shown in FIG. 67 are formed, as a whole, in a substantially inverted V shape. However, this configuration is only an example.
  • each of the front-side heat exchanger 51 and the back-side heat exchanger 55 is formed by a combination of a plurality of heat exchangers
  • the total length of the plurality of heat exchangers forming the front-side heat exchanger 51 is the length of the front-side heat exchanger 51
  • the total length of the plurality of heat exchangers forming the back-side heat exchanger 55 is the length of the back-side heat exchanger 55.
  • the heat exchanger 50 may be configured as follows.
  • Embodiment 28 points different from Embodiment 24 through Embodiment 27 will be mainly discussed, and the same portions as those of Embodiment 24 through Embodiment 27 are designated by like reference numerals.
  • FIG. 62 is a longitudinal sectional view illustrating an indoor unit according to Embodiment 28 of the present invention.
  • the direction of airflow flowing out of the back-side heat exchanger 55 is from the back side to the front side. Accordingly, in the indoor unit 100 according to Embodiment 29, it is even easier to deflect the airflow which has passed through the heat exchanger 50. That is, in the indoor unit 100 according to Embodiment 29, it is even easier to control airflow blown out of the air outlet 3 than in the indoor unit 100 according to Embodiment 26. Accordingly, in the indoor unit 100 according to Embodiment 29, it is not even necessary to suddenly deflect the airflow near the air outlet 3 compared with the indoor unit 100 according to Embodiment 26, thereby further reducing power consumption and noise.
  • FIG. 68 is a longitudinal sectional view illustrating an indoor unit according to Embodiment 33 of the present invention.
  • the right side of the drawing is the front side of the indoor unit 100.
  • the FIR filter 160 shown in FIG. 69 is a filter obtained by estimating this transfer characteristic H.
  • control sound can be estimated as a signal b detected by the noise/noise-cancellation effect detecting microphone 211.
  • the difference between the signal b and sound a subjected to interference processing which is detected by the noise/noise-cancellation effect detecting microphone 211 is found, thereby generating noise c to be canceled.
  • Embodiment 34 By individually controlling the rotation speeds of the fans 20 provided in the indoor unit 100, noise cancellation effects of an active noise cancellation mechanism are further improved.
  • Embodiment 34 the same functions and configurations of Embodiment 1 through Embodiment 33 are designated by like reference numerals.
  • the air-sending fan control means 171 includes identical-rotation-speed determining means 133, fan-individual-control rotation speed determining means 134, and a plurality of SWs 135 (the same number as that of the fans 20).
  • the identical-rotation-speed determining means 133 determines the rotation speed used for rotating all of the fans 20A through 20C at the same rotation speed, on the basis of operation information input from the remote controller 280.
  • the operation information input from the remote controller 280 includes, for example, operation mode information indicating a cooling operation mode, a heating operation mode, or a dehumidifying operation mode, and also includes air amount information indicating the amount of air represented by the level, such as high, middle, or low.
  • These rotation control signals are output from the controller 281 to the fans 20A through 20C.
  • the rotation control signals output from the controller 281 are input into the motor drivers 282A through 282C, and the fans 20A through 20C are controlled so that they may be operated at rotation speeds in accordance with the rotation control signals.
  • the air-sending fan control means 171 is constituted by the CPU 131 within the controller 281.
  • the air-sending fan control means 171 may be constituted by hardware, such as a LSI (Large Scale Integration) or a FPGA (Field Programmable Gate Array).
  • the configuration of the air-sending fan control means 171 is not restricted to the configuration shown in FIG. 75 .
  • the operation of the noise cancellation mechanisms A through C are exactly the same as that discussed in Embodiment 34.
  • the noise cancellation mechanisms A through C are operated as follows.
  • the noise cancellation mechanisms A through C respectively output control sound so that noise detected by the noise-cancellation effect detecting microphones 191 through 193 may approximate to zero, thereby reducing noise detected by the noise-cancellation effect detecting microphones 191 through 193.
  • noise-cancellation effect detecting microphone 193 In the indoor unit 100 according to Embodiment 35, not only noise output from the fan 20B, but also noise (crosstalk noise components) output from the adjacent fans 20A and 20C, is input into the noise-cancellation effect detecting microphone 193. In contrast, crosstalk noise components detected by the noise-cancellation effect detecting microphones 191 and 192 are smaller than those detected by the noise-cancellation effect detecting microphone 193. This is because the noise-cancellation effect detecting microphones 191 and 192 have only one adjacent fan (fan 20B). Thus, noise cancellation effects of the noise cancellation mechanisms A and B become higher than the noise cancellation mechanism C.
  • the operation information input into the controller 281 is input into the identical-rotation-speed determining means 133 through the input section 130.
  • the identical-rotation-speed determining means 133 determines, on the basis of the received operation information, the rotation speed used for operating all of the fans 20A through 20C at the same operation speed.
  • FIG. 80 is a front view illustrating another example of an indoor unit according to Embodiment 35 of the present invention.
  • FIG. 81 is a left side view illustrating the indoor unit shown in FIG. 80 .
  • the side wall of the casing 1 of the indoor unit 100 is transparent.
  • the flow channel is divided by partition boards 90 and 90a so that it may be separated into a region through which air blown out of the fan 20A passes, a region through which air blown out of the fan 20B passes, and a region through which air blown out of the fan 20C passes.
  • the noise-cancellation effect detecting microphones 191 through 193 may be mounted at any positions as long as they are on the downstream side of the control speakers 181 through 183, respectively.
  • two or three noise detecting microphones, two or three control speakers, two or three noise-cancellation effect detecting microphones, and two or three signal processors are provided.
  • Embodiment 35 is not restricted to this configuration.
  • the operation information input into the controller 281 is input into the identical-rotation-speed determining means 133 through the input section 130.
  • the identical-rotation-speed determining means 133 determines, on the basis of the received operation information, the rotation speed when identical rotation speed control is performed for operating all of the fans 20A through 20C at the same operation speed.
  • a noise cancellation mechanism for carrying out the present invention is not restricted to the noise cancellation mechanisms discussed in Embodiment 34 through Embodiment 36.
  • a noise cancellation mechanism different from the above-described noise cancellation mechanisms an air-conditioning apparatus exhibiting advantages similar to those discussed in Embodiment 34 through Embodiment 36 can be obtained.
  • Embodiment 37 an example in which a different noise cancellation mechanism is used in the air-conditioning apparatus according to Embodiment 34 will be discussed.
  • points different from Embodiment 34 through Embodiment 36 will be mainly discussed, and the same portions as those of Embodiment 34 through Embodiment 36 are designated by like reference numerals.
  • the indoor unit 100 includes the plurality of fans 20A through 20C
  • the rotation speeds of the fans 20A and 20C (fans that output noise which is likely to be cancelled) positioned closer to the noise/noise-cancellation effect detecting microphones 211 and 212, respectively, can be increased
  • the rotation speed of the fan 20B (fan that outputs noise which is not likely to be canceled) positioned farther away from the noise/noise-cancellation effect detecting microphones 211 and 212 can be decreased.
  • the noise/noise-cancellation effect detecting microphones 211 and 212 are mounted on the downstream side of the control speakers 181 and 182, respectively. However, the noise/noise-cancellation effect detecting microphones 211 and 212 may be mounted on the upstream side of the control speakers 181 and 182, respectively. In Embodiment 37, two control speakers, two noise/noise-cancellation effect detecting microphones, and two signal processors are provided. However, Embodiment 37 is not restricted to this configuration.
  • the air-sending fan control means 171 is configured so that the rotation speeds of the fans 20A and 20C positioned close to the noise/noise-cancellation effect detecting microphones 211 and 212, respectively, may be increased and so that the rotation speed of the fan 20B positioned farther away from the noise/noise-cancellation effect detecting microphones 211 and 212 may be decreased.
  • the air-sending fan control means 171 may be configured so that the rotation speeds of the fans 20A and 20C will be increased or so that the rotation speed of the fan 20B will be decreased.
  • the noise detecting microphones 161 and 162 and the noise-cancellation effect detecting microphones 191 and 192 are integrated into the noise/noise-cancellation effect detecting microphones 211 and 212, respectively. Accordingly, the number of microphones can be reduced, and thus, the number of parts can be reduced, thereby making it possible to further decrease the cost.
  • the rotation speeds of the fans may be determined so that the rotation speed of the fan 20A positioned close to the noise/noise-cancellation effect detecting microphone 211 which has detected the smallest noise level will be increased, and so that the rotation speed of the fan 20B positioned close to the noise/noise-cancellation effect detecting microphone 213 which has detected the largest noise level will be decreased, and so that the rotation speed of the fan 20C positioned close to the noise/noise-cancellation effect detecting microphone 212 which has detected neither of the smallest noise level nor the largest noise level will remain the same.
  • the rotation speeds of the fans 20A and 20C positioned close to the noise/noise-cancellation effect detecting microphones 211 and 212, respectively, corresponding to smaller averaged noise levels are increased, and the rotation speed of the fan 20B positioned close to the noise/noise-cancellation effect detecting microphone 213 corresponding to a larger averaged noise level is decreased.
  • FIG. 89 is a front view illustrating another example of an indoor unit according to Embodiment 38 of the present invention.
  • FIG. 90 is a left side view illustrating the indoor unit shown in FIG. 89 .
  • the side wall of the casing 1 of the indoor unit 100 is transparent.
  • the flow channel is divided by partition boards 90 and 90a so that it may be separated into a region through which air blown out of the fan 20A passes, a region through which air blown out of the fan 20B passes, and a region through which air blown out of the fan 20C passes.
  • the air-sending fan control means 172 is configured so that the rotation speed of a fan positioned close to a noise/noise-cancellation effect detecting microphone which has detected smaller noise levels may be increased and so that the rotation speed of a fan positioned close to a noise/noise-cancellation effect detecting microphone which has detected larger noise levels may be decreased.
  • the plurality of fans 20A through 20C are provided, and the controller 281 (more specifically, the air-sending fan control means 172) which individually controls the rotation speeds of the fans 20A through 20C is provided.
  • the air-sending fan control means 172 controls the rotation speeds so that, among averaged noise levels detected by the noise/noise-cancellation effect detecting microphones 211 through 213, the rotation speed of a fan positioned close to a noise/noise-cancellation effect detecting microphone which has detected an averaged smaller noise level may be increased, and so that the rotation speed of a fan positioned close to a noise/noise-cancellation effect detecting microphone which has detected an averaged larger noise level may be decreased.
  • the air-sending fan control means 172 controls the rotation speeds of the fans 20A through 20C so that the amount of air output from the air outlet 3 when fan individual control is performed may become the same as that when identical rotation speed control is performed. It is thus possible to reduce noise without causing degradation in aerodynamic performance.
  • control speakers 181 and 182 have a certain thickness, and thus, if they are mounted on the front surface or the back surface of the indoor unit 100, they block the flow channel, which may cause degradation in aerodynamic performance. Accordingly, in Embodiment 39, the control speakers 181 and 182 are stored in machine boxes (a box (not shown) in which a control substrate, etc. are stored) each provided on either side surface of the casing 1. By arranging the control speakers 181 and 182 in this manner, it is possible to prevent the control speakers 181 and 182 from protruding into the flow channel.
  • the fan-individual-control rotation speed determining means 134 of the air-sending fan control means 171 determines rotation speeds of the fans 20 used when performing fan individual control, on the basis of the rotation speed information determined by the identical-rotation-speed determining means 133 and the air-sending fan information read from the memory 132. More specifically, the fan-individual-control rotation speed determining means 134 increases the rotation speeds of the fans 20A and 20C whose identification numbers are stored in the memory 132, and decreases the rotation speed of the fan 20B whose identification number is not stored in the memory 132.
  • the air-sending fan control means 171 is configured so that the rotation speeds of the fans 20A and 20C fixed at both ends of the indoor unit 100 may be increased and so that the rotation speed of the fan 20B fixed at a portion other than both ends of the indoor unit 100 may be decreased.
  • the air-sending fan control means 171 may be configured so that the rotation speeds of the fans 20A and 20C will be increased or so that the rotation speed of the fan 20B will be decreased.
  • the fan-individual-control rotation speed determining means 134 of the air-sending fan control means 171 determines rotation speeds of the fans 20 used when performing fan individual control, on the basis of the rotation speed information determined by the identical-rotation-speed determining means 133 and the air-sending fan information read from the memory 132. More specifically, the fan-individual-control rotation speed determining means 134 increases the rotation speeds of the fans 20A and 20C whose identification numbers are stored in the memory 132, and decreases the rotation speed of the fan 20B whose identification number is not stored in the memory 132.
  • the noise/noise-cancellation effect detecting microphones 211 and 212 are mounted on the downstream side of the control speakers 181 and 182, respectively. However, the noise/noise-cancellation effect detecting microphones 211 and 212 may be mounted on the upstream side of the control speakers 181 and 182, respectively. In Embodiment 40, two control speakers, two noise/noise-cancellation effect detecting microphones, and two signal processors are provided. However, Embodiment 40 is not restricted to this configuration.
  • the operation information input from the remote controller 280 includes, for example, operation mode information indicating a cooling operation mode, a heating operation mode, or a dehumidifying operation mode, and also includes air amount information indicating the amount of air represented by the level, such as high, middle, or low.
  • the noise-cancellation-amount calculating means 138 receive digital values S1, S2, and S3 indicating sound pressure levels detected by the noise-cancellation effect detecting microphones 191, 193, and 192, respectively, and calculate the noise cancellation amounts from these signals S1, S2, and S3.
  • the identification numbers of the fans 20 positioned closest to the noise detecting microphones having the highest coherence values with the respective noise-cancellation effect detecting microphones 191 through 193, may be used as air-sending fan information.
  • crosstalk noise components detected by the noise/noise-cancellation effect detecting microphones 211 and 212 are smaller than those detected by the noise/noise-cancellation effect detecting microphone 213. This is because the noise/noise-cancellation effect detecting microphones 211 and 212 has only one adjacent fan (fan 20B).
  • noise cancellation effects of the noise cancellation mechanisms D and E become higher than those of the noise cancellation mechanism F.
  • the air-sending fan control means 174 is constituted by the CPU 131 within the controller 281.
  • the air-sending fan control means 174 may be constituted by hardware, such as a LSI (Large Scale Integration) or a FPGA (Field Programmable Gate Array).
  • the configuration of the air-sending fan control means 174 is not restricted to the configuration shown in FIG. 93 .
  • the air-sending fan control means 174 may be configured so that the rotation speed of a fan which outputs noise highly related to sound detected by a noise-cancellation effect detecting microphone having a larger noise cancellation amount will be increased or so that the rotation speed of a fan which outputs noise highly related to sound detected by a noise/noise-cancellation effect detecting microphone having a smaller noise cancellation amount will be decreased.
  • the noise detecting microphones 161 through 163 and the noise-cancellation effect detecting microphones 191 through 193 are integrated into the noise/noise-cancellation effect detecting microphones 211 through 213, respectively. Accordingly, the number of microphones can be reduced, and thus, the number of parts can be reduced, thereby making it possible to further decrease the cost.

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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 Room Units, And Self-Contained Units In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP10855571.5A 2010-08-04 2010-08-04 Indoor unit for air conditioner, and air conditioner Active EP2602562B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/004908 WO2012017479A1 (ja) 2010-08-04 2010-08-04 空気調和機の室内機、及び空気調和機

Publications (3)

Publication Number Publication Date
EP2602562A1 EP2602562A1 (en) 2013-06-12
EP2602562A4 EP2602562A4 (en) 2016-11-30
EP2602562B1 true EP2602562B1 (en) 2018-12-26

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ID=45559013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10855571.5A Active EP2602562B1 (en) 2010-08-04 2010-08-04 Indoor unit for air conditioner, and air conditioner

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Country Link
EP (1) EP2602562B1 (zh)
JP (1) JP5606533B2 (zh)
CN (1) CN103140717B (zh)
WO (1) WO2012017479A1 (zh)

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JP5826098B2 (ja) * 2012-04-04 2015-12-02 三菱電機株式会社 プロペラファンおよび空気調和機
CN103375841B (zh) * 2012-04-13 2015-07-08 珠海格力电器股份有限公司 壁挂式空调室内机
JPWO2014006650A1 (ja) * 2012-07-03 2016-06-02 三菱電機株式会社 空気調和機の室内機、及びこの室内機を備えた空気調和機
JP5748916B2 (ja) * 2012-07-03 2015-07-15 三菱電機株式会社 空気調和機の室内機、及びこの室内機を備えた空気調和機
JP6248486B2 (ja) * 2013-09-11 2017-12-20 ダイキン工業株式会社 空気調和機のダクト型室内機
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EP2602562A4 (en) 2016-11-30
EP2602562A1 (en) 2013-06-12
WO2012017479A1 (ja) 2012-02-09
JPWO2012017479A1 (ja) 2013-09-19
JP5606533B2 (ja) 2014-10-15
CN103140717A (zh) 2013-06-05
CN103140717B (zh) 2016-05-04

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