CN101512237A

CN101512237A - Indoor unit of air conditioner

Info

Publication number: CN101512237A
Application number: CNA2006800491810A
Authority: CN
Inventors: 金正勋; 宋惠映; 金世睍; 洪宁基
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2005-12-26
Filing date: 2006-01-25
Publication date: 2009-08-19
Anticipated expiration: 2026-01-25
Also published as: CN101512237B; KR20070087829A

Abstract

Indoor unit which draws air through a front, and discharges air heat exchanged therein in a front direction through sides, having an optimized stricture with increased suction and discharge rates and low noise. For this, the indoor unit includes a front frame made to enable air suction through a front thereof, a base frame joined with the front frame, having outlets in sides and a bottom, and a motor seat for mounting a fan driving motor thereon, a guide frame between the front frame and the base frame for guiding an airflow, a heat exchanger between the front frame and the guide frame, a fan for discharging heat exchanged air to an outside of the indoor unit, and a front panel mounted in front of the front frame with a space thereto.

Description

The indoor unit of air-conditioning

Technical field

The present invention relates to air-conditioning, more specifically, relate to a kind of like this indoor unit, be that described indoor unit sucks air and the air that carry out heat exchange is therein passed through side discharge along forward direction by the front portion, this indoor unit has the speed of suction and rate of discharge increases and low the optimizing structure of noise.

Background technology

Usually, air-conditioning repeats kind of refrigeration cycle, in described kind of refrigeration cycle cold-producing medium be compressed, condensation, expansion and evaporation.

That is to say, the gaseous refrigerant that was in low-temp low-pressure before being incorporated into compressor is compressed into the gaseous refrigerant of HTHP at the compressor place, change into high pressure liquid refrigerant at the condenser place owing to gaseous refrigerant discharges heat, and change into the liquid refrigerant of low-temp low-pressure owing to high pressure liquid refrigerant through expansion valve.Because cold-producing medium absorbs heat when cold-producing medium process evaporimeter, thus change into low-temperature low-pressure refrigerant through the cold-producing medium of expansion valve at the evaporimeter place, and be incorporated in the compressor once more.Air-conditioning is cooling or heating desired position in the process of carrying out a series of like this circulations.

Simultaneously, in air-conditioning, have assembled air-conditioner and split-type air conditioner, described assembled air-conditioner has and is configured in an indoor unit and an outdoor unit and be installed in the window place usually in the fuselage, and described split-type air conditioner has indoor unit separated from one another and outdoor unit.In indoor unit, a kind of wall type air-conditioning that is used to be installed on the wall as a class interior decoration is arranged.

The indoor unit of disclosed correlation technique has such structure in Korean Patent No.10-2005-0089203, promptly wherein discharge air by the rear side suction air of indoor unit and by the front portion of indoor unit, to omit its detailed description below, if desired can be with reference to above-mentioned document.

Simultaneously, in above-mentioned Korean Patent the indoor unit of disclosed correlation technique owing to structure has following shortcoming.

If install indoor unit especially near wall, the airflow rate that then arrives the rear portion of indoor unit reduces, and noise increases simultaneously.

Be installed on the front panel, be used to drive turbofan and front panel vibrated when motor moves with the motor that the rear portion by indoor unit sucks air, in the design of described front panel, considered consumer's visual experience more.

The rear side structure for inhaling air has the filter that for this reason is installed in rear side, and need drag down filter from rear side and clean, and filter will be put into rear side after cleaning, and this is not convenient for the user.

Summary of the invention

Technical problem

Be used to solve a kind of indoor unit of the object of the present invention is to provide of above-mentioned variety of issue, it is by the anterior air that sucks, and be emitted on the air that heat exchange has wherein taken place by sidepiece along forward direction, having the speed of suction and rate of discharge increases and low the optimizing structure of noise.

That is to say, the present invention relates to indoor unit, that it sucks via the front portion along forward direction discharging by sidepiece, and the air of heat exchange has taken place therein, has the new construction of having optimized inlet flow and discharge stream structure and various parts, be used to increase airflow rate, keep good low noise characteristic simultaneously.

Technical scheme

By providing a kind of indoor unit that is used for air-conditioning can obtain purpose of the present invention, this indoor unit comprises: front baffle, and it is made into can be by its anterior air that sucks; The bedframe that is connected with front baffle, have motor base and be positioned at sidepiece and the bottom on outlet, be used to install the motor of drive fan on the described motor base; Guide frame between front baffle and bedframe is used for steering current; Heat exchanger between front baffle and guide frame; Fan is used for having taken place to the outside drain of indoor unit the air of heat exchange; And front panel, it is installed in the place ahead of front baffle, with the spaced apart space of described front baffle.

Simultaneously, in another aspect of this invention in, the indoor unit that is used for air-conditioning comprises: front baffle, it is made into can be by its anterior air that sucks; The bedframe that is connected with front baffle has two motor bases on the inboard that is positioned at the outlet on sidepiece and the bottom and is positioned at the front portion, is used to install two motor that drive turbofan on the described motor base; Guide frame between front baffle and bedframe is used for steering current; Heat exchanger between front baffle and guide frame; Two turbofan are used for having taken place when through over-heat-exchanger to the outside drain of indoor unit the air of heat exchange; And front panel, it is installed in the place ahead of front baffle, with the spaced apart space of front baffle.

Simultaneously, in another aspect of this invention in, the indoor unit that is used for air-conditioning comprises: front baffle, it is made into can be by its anterior air that sucks; The bedframe that is connected with front baffle, have be positioned at the outlet on the sidepiece and be positioned at upside or the inboard of downside on motor base, described motor base is used to install the motor that drives cross flow fan; Be positioned at the heat exchanger at front baffle rear; Be positioned at the cross flow fan on the left side and the right side at heat exchanger rear; And the front panel that is positioned at front baffle the place ahead, with the spaced apart space of front baffle, be used to block the suction face of front baffle.

Beneficial effect

The indoor unit that is used for air-conditioning has following advantage.

At first, suck air from the front portion and allow to optimize structure, suck and discharge speed when reducing noise, to increase by the indoor unit that the air of heat exchange taken place side discharge.

That is to say that the present invention allows to provide a kind of indoor unit of new construction, it has the suction/discharge structure and the various parts of optimization, makes to keep low noise properties when improving air velocity.

At length, compare,, also can guarantee to suck the flow velocity of air even install indoor unit of the present invention near wall with correlation technique.

In addition, will drive on the motor mounting former frame frame of turbofan differently, consider during design that the front panel of consumer's visual experience does not vibrate, the noise when being reduced in drive motor with the indoor unit of correlation technique.

Filter is installed in the front side and allows to facilitate to the user, because the attaching/detaching filter is easy during cleaning.

Description of drawings

Fig. 1 illustrates the exterior perspective view according to the indoor unit of preferred implementation of the present invention;

Fig. 2 illustrates the exploded perspective view of Fig. 1;

Fig. 3 illustrates along the sectional view of the indoor unit of the line I-I among Fig. 1;

Fig. 4 illustrates plane of " A " part among Fig. 2, is used to illustrate the marginal texture of the front panel of indoor unit of the present invention;

Fig. 5 illustrates the stereogram of the front baffle of indoor unit of the present invention;

Fig. 6 illustrates the stereogram of the guide frame of indoor unit of the present invention;

Fig. 7 illustrates the front view of Fig. 6;

Fig. 8 illustrates along the sectional view of the line II-II among Fig. 6;

Fig. 9 illustrates a chart, shows the relation of the ratio of pore radius and fan diameter with respect to noise;

Figure 10 illustrates a stereogram, shows the variant of the turbofan of indoor unit of the present invention;

Figure 11 illustrates a stereogram, shows another variant of the turbofan of indoor unit of the present invention;

Figure 12 illustrates a chart, and the noise properties that shows the fan of applied turbofan of the present invention and correlation technique compares;

Figure 13 illustrates the plane of Figure 10;

Figure 14 illustrates the stereogram of the motor mounting base of indoor unit of the present invention;

Figure 15 illustrates the sidepiece stereogram of Figure 14;

Figure 16 illustrates and is used to illustrate the plane that the electronics dust-collector is installed to the installation site of indoor unit of the present invention;

Figure 17 illustrates the side view of Figure 16;

Figure 18 illustrates the visible reference diagram of flow pattern of the discharge portion office that makes the indoor unit that is positioned at correlation technique;

Figure 19 to 21 is respectively according to the front view of the indoor unit of other preferred implementation of the present invention, has two turbofan that are applied to indoor unit respectively under these situations and has turbulent structure in each case;

Figure 22 illustrates the stereogram according to the indoor unit of another preferred implementation of the present invention, and described indoor unit has the cross flow fan that is applied thereon; And

Figure 23 to 26 illustrates the cross-sectional view according to the variant of the indoor unit of preferred implementation of the present invention respectively, and described indoor unit has two cross flow fans that are applied thereon.

The specific embodiment

To describe preferred implementation of the present invention in detail now, its example shown in the drawings.

The indoor unit of foundation first preferred implementation of the present invention is described below with reference to Fig. 1 to 17.

Fig. 1 illustrates the exterior perspective view according to the indoor unit of preferred implementation of the present invention; Fig. 2 illustrates the exploded perspective view of Fig. 1; And Fig. 3 illustrates along the sectional view of the indoor unit of the line I-I of Fig. 1.

Fig. 4 illustrates plane of " A " part among Fig. 2, is used to illustrate the marginal texture of the front panel of indoor unit of the present invention; And Fig. 5 illustrates the stereogram of the front baffle of indoor unit of the present invention.

Fig. 6 illustrates the stereogram of the guide frame of indoor unit of the present invention; Fig. 7 illustrates the front view of Fig. 6; Fig. 8 illustrates along the sectional view of the line II-II among Fig. 6; And Fig. 9 illustrates a chart, shows the relation of the ratio of pore radius and fan diameter with respect to noise.

Figure 10 illustrates a stereogram, shows the variant of the turbofan of indoor unit of the present invention; Figure 11 illustrates a stereogram, shows another variant of the turbofan of indoor unit of the present invention; Figure 12 illustrates a chart, and the noise properties that shows the fan of applied turbofan of the present invention and correlation technique compares; And Figure 13 illustrates the plane of Figure 10.

Figure 14 illustrates the stereogram of the motor mounting base of indoor unit of the present invention; And Figure 15 illustrates the rear side stereogram of Figure 14.

Figure 16 illustrates and is used to illustrate the plane that the electronics dust-collector is installed to the installation site of indoor unit of the present invention; And Figure 17 illustrates the side view of Figure 16.

Referring to figs. 1 to 3, the indoor unit 1 of air-conditioning of the present invention comprises: front baffle 200, and it is manufactured into can be by its anterior air that sucks; Bedframe 400 is used for being connected with front baffle 200, have outlet at sidepiece and bottom, and forwardly centre has base portion 410, and described base portion 410 is used to settle the motor of drive fan; Guide frame 300, it is used for steering current between front baffle 200 and bedframe 400; Heat exchanger 500, it is between front baffle 200 and guide frame 300; Turbofan 600, its air that is used for to heat exchange to have taken place when the over-heat-exchanger 500 is discharged into the outside of indoor unit; And front panel 100, it is installed in the place ahead of front baffle 200 and spaced apart with front baffle 200.

With reference to figure 4, front panel 100 has preset thickness except the marginal portion, and the thickness of described marginal portion outwards more from the precalculated position becomes thin more at it, in order to reduce the air suction resistance.That is to say that the marginal portion of front panel 100 has predetermined angle of inclination beta.

If desired, the periphery of front panel 100 can have chamfering 110.

With reference to figure 5, the air intake 210 that front baffle has lattice types at the front, center place that is used to suck air, and have projection 220 in the outside of air intake 210, be used for fixing front panel.

Has the filter 800 that is used for impurity screening on the air intake 210 of former frame frame 200.Generally speaking, filter has the mesh shape.

The top side intake section ' B ' of front baffle 200 has curved surface, is used for the minimum stream dynamic resistance.

With reference to figure 6 to 8, guide frame 300 comprise be used for the hole 310 that the air-flow that turbofan 600 sucks is led and be used for to the air-flow of discharging from turbofan 600 lead and the fixed discharge direction/following

scrollwork

320a and 320b.

For last/following

scrollwork

320a and 320b, last scrollwork 320a has the aggregate surface that two curved surfaces combine, and this aggregate surface is around turbofan 600, has at the separation of the first quartile (surface, upper left side) of guide frame 300

,

Coordinate, wherein

The diameter of expression turbofan 600, and x and y represent the coordinate of initial point in the center of turbofan 600.

Simultaneously, with reference to figure 2 and 3, guide frame 300 also is included in the heat exchanger supports part 330 on the opposed surface of scrollwork, is used to remain on the gap between hole 310 and the heat exchanger 500.

When the gap ' G ' of bottom between the bottom of heat exchanger 500 in hole 310 be turbofan diameter 9.5～10.5% the time, performance the best of noise minimum and turbofan.

For example, if the diameter of turbofan 600 is 300mm, then gap ' G ' is that 28.5～31.5mm is most preferred.

Simultaneously, with reference to figure 8 and 9, preferably, the diameter of radius in hole 310 ' R ' and turbofan 600

Ratio

Be 0.05～0.07, be used for the optimum shape in the hole 310 of definite minimum stream dynamic resistance, in this scope, noise properties and turbofan performance all are optimized.Particularly, the diameter of 310 radius ' R ' and turbofan 600 in the hole

Ratio

Be that noise properties and turbofan performance are best under 0.06 the situation.

With reference to figure 2 and 3, guide frame 300 has edge plane 340, and edge plane 340 is to be used for surface that air discharged is led and towards the front side bending of indoor unit.

With reference to figure 2 and 3, particularly with reference to figures 10 to 13,

turbofan

600 or 600a comprise: shroud 610, and it has the center suction opening; Hub 630, its have relative with shroud 610 and with shroud mainboard 620 spaced apart by a predetermined distance, be used for connecting the turning cylinder of motor in centre; And a plurality of

blades

640 or 640a, each blade has predetermined curvature, and is connected between the mainboard 620 and shroud 610 of hub 630 along the circumferencial direction of hub 630.

The blade 640 of

turbofan

600 or 600a or the blade end pitch of 640a are variable or equate, wherein, in general, variable pitch is favourable for fan performance (with respect to the static pressure characteristic of same airflow speed) and noise, and the pitch that equates effect is favourable for balance of fan.Thereby the number of consideration fan diameter, width of blade and blade becomes to have variable pitch or equal pitch with fan design.For example, at fan diameter

The width (L sees Figure 10) that is 300mm, blade is that the number of 50mm and blade is under 13 the situation, and the fan with equal pitch has best noise properties.

No matter be to equate pitch or variable pitch, the width of blade can be always identical, with from the center of turbofan to the range-independence (see figure 10) of blade end, or the center of accompanying or follow turbofan changes (seeing Figure 11) to the distance of blade end.

That is to say that the width of blade can always have identical size as shown in Figure 10, and with to the radius centered range-independence of turbofan, or far more after vanes is crossed mainboard as shown in Figure 11 become more little.

Turbofan among Figure 10 is guaranteeing that aspect the big flow velocity be favourable, and how blade all has the blade 640 of same size to the distance of the fan center with larger area blade; And the turbofan 600a among Figure 11 consider to suppress because to be connected to aspect the mainboard 620 of hub 630 and the eddy current that the mobile interference between the blade causes be favourable, the width of blade 640a shape far away more after vanes is crossed mainboard becomes more little, and its mainboard 620 sides that are shaped as blade are cut off.

Simultaneously, if the air discharge area of indoor unit 1 fix, if the diameter of turbofan then

Ratio with the width of blade

Being 6.5～7.5, is best at fan aspect flow velocity, high static pressure and the low noise characteristic then.

Preferably, the blade end of

blade

640 or 640a is positioned at the position identical with the edge of shroud 610.

Simultaneously, refer to figs. 14 and 15, are annular flange portion 410a in the motor base part 410 of the motor that is used for drive fan of the centre of bedframe 400, be used to allow to guarantee the stable and sufficient width of blade.

With reference to Figure 15, near the motor base part 410 on the rear side of bedframe 400, be provided with rib 420, be used to gain in strength and inequality with the intrinsic frequency of motor.

Simultaneously, for outside the intrinsic frequency of motor, can change the thickness of bedframe 400.The thickness of bedframe 400 of the present invention ' t ' is in the scope of 4～8mm, with outside the intrinsic frequency of motor.

With reference to figure 3, though guide frame 300 has edge plane 340, but the inside of the downside of the outlet 430 of bedframe 400 on the edge of bedframe 400 has the guide surface 440 of predetermined curvature, be used for will air discharged preceding side directed to indoor unit.

According to this scheme, even be not additionally provided with the direction of air control appliance, indoor unit 1 of the present invention also can be with the front side discharging of air towards indoor unit.

Certainly, the outlet 430 of indoor unit 1 of the present invention can be provided with the shutter (not shown), with by the mode opening/closing of stepping motor with sliding type.

In this example, the open angle of shutter be confirmed as making shutter do not hinder by discharged air guide surface 440 guiding of the inner surface of bedframe 400 along the forward direction air discharged.

Current, though shutter also be used for will air discharged preceding side directed towards indoor unit, but because even indoor unit 1 of the present invention is not provided with the additional control appliance that flows to, indoor unit 1 also can be towards the front side discharged air of indoor unit, so indoor unit 1 can not be provided with shutter.

Yet preferably, indoor unit 1 is provided with shutter, because shutter covers the outlet of indoor unit, with the exterior clean of maintenance indoor unit, and prevents that when indoor unit 1 does not move dust or impurity from entering by outlet.

Simultaneously, with reference to figure 2 and 3 and 16 and 17, the air-breathing plane of indoor unit 1 heat exchanger 500 of the present invention is provided with electronics dust-collector 700.

In this example, preferably, electronics dust-collector 700 is mounted to center one segment distance apart from turbofan 600.

In more detail, referring to figs. 16 and 17, preferably, it is 5～6 position that electronics dust-collector 700 is installed in ratio l/h, wherein " l " represents the distance at the center of turbofan 600, and the height of " h " expression from the upper surface of turbofan 600 to the center of electronics dust-collector 700 has minimum noise at this position electronics dust-collector 700 and keeps performance identical simultaneously.

Generally speaking, electronics dust-collector 700 is fixed on the fin of heat exchanger 500.That is to say that the fixture (not shown) of electronics dust-collector 700 is pressed between the fin of heat exchanger 500, so that electronics dust-collector 700 is fixed to heat exchanger 500.

Simultaneously, high voltage is removed airborne fine dust and to air deodorization to be used to apply though photocatalysis plasma electronics dust-collector preferably is provided, if only remove fine dust then common electronics dust-collector can be set.

That is to say that though common electronics dust-collector can be caught dust, common electronics dust-collector can not solve the problem of deodorizing, active carbon filter can additionally be set.

Simultaneously, photocatalysis plasma electronics dust-collector comprises: ionization module is used for the dust of ionized air and launches luminous energy; Capturing unit is used to be captured in the dust that the ionization module place is ionized; Photocatalytic filter is used to decompose the foul smell particle of catching by from the luminous energy of ionization module emission; And the high voltage generation unit, be used for applying high voltage to the dust de-entrainment filter.

The operation of various details indoor unit 1 and effect.

At first, make after indoor unit 1 brings into operation, turbofan 600 is rotated, with the suction room air by the space between plate 100 and the front baffle 200 in front.

That is to say,, room air is incorporated into the air intake 210 in the front portion of former frame frame 200 by the upper/lower and the left/right four direction of front panel 100.

Then, when air passed through the filter 800 at air intake 210 places that are positioned at front baffle 200, the impurity that air has was filtered device and filters.Then, air is heated at heat exchanger 500 places, and is inhaled into turbofan 600 under the guide effect in the hole 310 that is arranged in guide frame 300 places.

In this process, a part of room air during this period, if dust-collector is a photocatalysis plasma electronics dust-collector, is then caught and is filtered trickle dust, and air is carried out deodorizing through electronics dust-collector 700.

Simultaneously, be inhaled into air in the turbofan 600 through electronics dust-collector 700 by radial discharge, and air-flow is divided into along a left side/right and downward direction under the guiding of last scrollwork 320a and following scrollwork 320b along fan.

Then, air under the guiding of the edge plane of the guide surface 440 of bedframe 400 and guide frame 300 by front side discharging towards indoor unit.

Thereby the function of the various piece of indoor unit 1 of the present invention and effect are as follows.

Front panel 100 is attached to the front portion of indoor unit 1 of the present invention, blocks the air intake 210 that filter is installed, so that indoor unit 1 seems more attractive in appearance.

Certainly, further seem more attractive in appearance in order to make indoor unit 1, can attached ornament materials or design.

A side of plate 100 in front, can be provided with individually the display unit (not shown) or with front panel 100 as a unit be provided with the display unit (not shown), be used for showing operation and/or the mode of operation or the function treatment state of indoor unit 1 to the user.

With reference to figure 4, the marginal portion of front panel 100 have otch on the surface so that its thickness just thin more near the edge more, thereby enlarged the air intake area between the plate 100 and front baffle 200 in front.

That is to say, be incorporated into the suction area of the air of the front/rear of front panel 100 and upper/lower, can increase airflow rate by expansion.

Then, the top side intake section of front baffle 200 formed have predetermined curve, the flow resistance that is used for minimum air is because the top side intake section height of front baffle 200, if make when indoor unit 1 is installed on the wall then it be can't see the user.

That is to say that basically, if the excesssive gap between front panel 100 and the front baffle 200, though be favourable aspect the air suction then, it has following shortcoming: the inside that can see indoor unit 1 by this gap.Yet comparatively speaking, the top side intake section of front baffle 200 does not have such problem.

Simultaneously, consider to suck the flow resistance of air certainly if desired more, have no relations if perhaps indoor unit 1 is installed in the downside of wall, then not only the bottom side inlet of top side inlet and front baffle 200 can be a curve.

Then, the filter 800 on the air intake 210 of front baffle 200 is filters of mesh-type, the dust of the large-size in the filtered air and impurity.

Then, the hole 310 in guide frame 300 is directed effectively to inhaled air in the turbofan 600, helping to reduce the noise of indoor unit 1, and is used to make the performance of turbofan 600 to be improved to greatest extent.

Be similar to hole 310, the scrollwork of guide frame 300 is used for fixing from the emission direction of turbofan 600 air discharged and the air-flow of institute's air discharged is evenly distributed, help to reduce the noise of indoor unit 1, and by to the discharged air channeling conduct performance of turbofan being improved to greatest extent.

In addition, in heat exchanger supports part 330 retaining holes 310 of outstanding predetermined altitude and the gap between the heat exchanger 500 on the opposed surface of scrollwork, be used to guarantee the required heat exchange area between institute's inhaled air and the heat exchanger 500.

That is to say, if heat exchanger 500 and hole 310 in abutting connection with and do not have heat exchanger supports part 330, then greatly reduce air and suck area, can not guarantee required heat exchange area.Yet, because the size (degree of depth of indoor unit) of the front/rear direction of the big more indoor unit of projecting height of heat exchanger supports part 330 is just big more, so need this situation with due regard to design the height of indoor unit.

Together with this situation, the radius ' R ' in the hole 310 of guide frame 300 and the diameter of turbofan

Ratio

Be designed so that noise properties is optimized.

The edge plane 340 towards the front side bending of indoor unit 1 of guide frame 300 has been improved the flow resistance of the air that is discharged, thereby reduced noise, and prevented that air from refluxing so that be inhaled into once more by the gap between front panel 100 and the front baffle 200.

That is to say that with reference to figure 3, the flat surfaces of the marginal portion 340 of guide frame 300 is partly compared flow resistance and the backflow that has reduced air with the curved edge of guide frame 300.

Then, because the pressure of the blade of turbofan 600 and the end that flow speed characteristic often concentrates on fan, so increase the terminus area of blade, to improve static pressure characteristic and noise properties.

That is to say that generally speaking, if turbofan has big width, for the area that makes blade is bigger, pressure component increases, then meaning needs fan to overcome flow resistance when required flow rate is provided.

The width of blade of each blade that uses with the turbofan 600 among Figure 10 is compared up to all identical situation in the end of blade end, the width of each blade that turbofan 600a among Figure 11 uses in mainboard 620 sides when when blade end is near more, becoming more little, has poor static pressure characteristic, thereby need fan faster, cause noise to increase, because the rotating speed of turbofan is the main source of noise.

According to this situation,,, then can reduce the noise that rotating speed causes even also can guarantee enough air velocitys so that rotating speed is low if use the turbofan 600 of the blade of the width have as shown in Figure 10 and length.

On the other hand, has the turbofan 600a of shape blade as shown in Figure 11 if use, being reduced in and mainboard 620 that hub 630 forms as one and the flow resistance between the blade, thereby make the eddy current at the blade end place reduce, then the turbofan noise that is caused by eddy current is minimized.

That is to say that though the turbofan among Figure 11 is being favourable aspect the noise that is caused by eddy current, if increase the shortcoming that rotating speed overcomes low flow velocity, then it has following shortcoming: the noise of motor increases along with the increase of described rotating speed.Though unfavorable aspect the noise that is caused by eddy current, it is favourable to the turbofan among Figure 10 with respect to the turbofan among Figure 11, obtain to make the effect that reduces the noise reduction that produces owing to rotating speed with expectation aspect airflow rate.Shown in the chart among Figure 12, as test result, it is better that the noise of the turbofan of Figure 10 reduces effect.Although the turbofan of Figure 10 has better noise reduction effect than the turbofan of Figure 11, because the turbofan among Figure 11 has the favorable noise characteristic, so turbofan 1 goes for indoor unit 1 of the present invention.

Then, on the annular flange portion 410a of the motor base part 410 of the centre of bedframe 400 motor ' M ' is installed, annular flange portion 410a is preceding side-prominent to indoor unit.

Rib around the motor base part 410 on the dorsal part of bedframe 400 increases the intensity of bedframe 400, and the frequency characteristic that makes bedframe 400 drops on outside the intrinsic frequency of motor, thereby makes bedframe 400 and motor not resonate.

In addition, as mentioned above, although the annular flange portion 410a at bedframe 400 places is used to reinforce and avoids resonance when motor moves, annular flange portion 410a also is used to keep the width of blade of turbofan constant.

That is to say that with reference to figure 3, the mainboard 620 of turbofan makes it possible to fully guarantee the width of blade around the design of the annular flange portion 410a of bedframe 400 in the position lower than the highest projecting point of the annular flange portion 410a in the accompanying drawing.

Simultaneously, the change of the thickness of bedframe 400 ' t ' causes changing in the quality at place, end, the vibration characteristics of bedframe is dropped on outside the intrinsic frequency of motor, thereby prevent the resonance between bedframe 400 and motor.

Then, the electronics dust-collector 700 that is positioned on the getter surface of heat exchanger was removed airborne fine dust at air before over-heat-exchanger 500.

In addition, the electronics dust-collector 700 that is positioned at away from the one preset distance place, center of turbofan can provide the dust wipe performance that meets the demands, and electronics dust-collector 700 does not hinder air simultaneously.

Simultaneously, though front panel 100 can be a fixed type, but consider the defective that reduces front panel 100, also can preferably use the front panel 100 that sucks regional variable type, wherein panel 100 tilts in the following manner: the upside of front panel 100 or downside move away from front baffle etc. in the indoor unit running, and front panel 100 is closed when indoor unit does not move, or whole front panel 100 moves forward to increase the suction area.

Situation from two turbofan 600 to indoor unit that wherein use will be described below.

Basically, though this embodiment is identical with aforementioned embodiments in the following areas: room air sucks by anterior, and discharge towards the front side of indoor unit by heat exchanger 500 and turbofan 600, but present embodiment is different with aforementioned embodiments in the following areas: this embodiment provides two turbofan 600, and the structure partial that therefore causes changes.

Generally speaking, can know that under the situation of the fan that only rotates along direction, the discharged air flow pattern of indoor unit of only using a turbofan is at a left side/right and downward direction skewness (seeing Figure 18).

Therefore, the indoor unit of two fans of a kind of application is provided in the embodiment of wishing to be described below, so that the discharged air flow pattern is more even, in addition, by differently controlling the rotating speed of two fans, can change the left side of indoor unit and the flow velocity of right side or left side and right side and downside air discharged.

The indoor unit of using two turbofan 600 is described below with reference to Figure 19 to 21.

Before beginning to describe this embodiment, give identical title and reference number to the parts identical, and they can be shown with aforementioned embodiments.

The indoor unit of this embodiment comprises: front baffle 200 (see figure 2)s, and it is made into can be by its anterior air that sucks; Bedframe 400 (see figure 2)s are used for being connected with front baffle 200, have air outlet slit in side and bottom, and forwardly have two motor bases 410 (seeing Figure 14) on the inboard, are used to drive turbofan; Guide frame 300 between former frame frame 200 and the bedframe 400 (seeing Fig. 2 and 6) is used for steering current; Heat exchanger 500 between former frame frame 200 and the guide frame 300; And front panel 100 (see figure 2)s, it is installed in the front portion of front baffle 200, with the spaced apart space of front baffle.

With reference to Figure 19, this embodiment is characterised in that: two turbofan 600 are installed in upside and downside respectively, middle scrollwork 320c is installed between two turbofan, be used to make two turbofan to isolate and the guiding exhaust jet stream, last scrollwork 320a is positioned at the turbofan top, following scrollwork 320b is positioned at turbofan below down, is used for downward side directed air discharging.

Guide frame 300 has the hole 310 of corresponding formation with turbofan, is used for respectively to the turbofan steering current.

Turbofan is installed into along different directions rotates.

Under the situation of this structure, though the air emission direction mainly is along left side and right side, but because middle scrollwork is with the upside of air-conditioning and downside separately, so and air not only along left side and right side and along the downside discharging, indoor unit finally has five air emission directions.

In this case, compare with the situation that a turbofan only is set, the air discharge flow is more evenly distributed.

Be not positioned at the following scrollwork 320b to downward side directed air-flow discharging of turbofan below down if be not provided with, though then the air emission direction is divided into left to and right, but because middle scrollwork separates upper space and lower space, so finally always have four emission directions.

With reference to the Figure 20 that wherein shows the middle scrollwork 320d of another structure, equally in this case, the air discharge flow distributes than only using the situation of a fan more even.

Figure 21 shows the middle scrollwork 320e that compares with Figure 19 to tilt in opposite direction.

Simultaneously, rotate along equidirectional, also do not produce any difference even be installed in the turbofan of upside and downside respectively.

Certainly, as can recognizing, even the center of rotation no-fix of turbofan that is positioned at upside and downside can not produce any difference yet on same vertical curve from Figure 19 to 21.

Particularly, if having the end that the indoor unit of two turbofan is installed to wall, then a left side/right side air the discharge speed by the control indoor unit can improve air-flow effectively.

That is to say that if indoor unit is not the central authorities at wall, but in a side of wall, then the air-flow towards adjacent wall is deflected on the wall, this makes the aeroscepsin variation at the customer location place.Yet, under the situation of the embodiment of using two fans, change air velocity by the rotating speed of controlling a fan, to obtain desirable aeroscepsin along left/right.

If add comment, when fixing the air discharge speed according to the scrollwork shape of turbofan or rotation direction, control one of them fan by the installation site of considering indoor unit, can change left side or right side rate of discharge and obtain desirable aeroscepsin.

The indoor unit of using two cross flow fans 900 is described below with reference to Figure 23 to 26.

Similar with the above-mentioned situation of using two turbofan, the indoor unit of this embodiment and the something in common of aforementioned embodiments are: can be along the left/right air discharge speed that distributes equably, and can consider the indoor unit installation site and change air discharge speed, to obtain desirable aeroscepsin along left/right.

Figure 22 shows the stereogram of the indoor unit of having used two cross flow fans 900, comprising: front baffle 200, and it is made into can be by the anterior air that sucks; Bedframe 400 is used for being connected with front baffle 200, have be positioned at the outlet on the side and be positioned at upside and the inboard of downside on motor base, described motor base is used to install the motor that drives cross flow fan; Be positioned at the heat exchanger 500 at the rear of front baffle 200; Be positioned at the left side at rear of heat exchanger 500 and the cross flow fan 900 on right side; And the front panel 100 that is positioned at the place ahead of front baffle 200, separate a space with front baffle, be used to block the suction face of front baffle 200.

Basically, front panel 100 is installed to be and makes its upper/lower and left/right have to the identical air-breathing gap of the suction face of front baffle 200.

Simultaneously, Figure 23 to 26 shows the sectional view of the variant of the indoor unit of the present invention of using two cross flow fans 900, except the shape difference of the diameter of front panel mounting structure, fan and heat exchanger 500, the basic structure that is had is identical with the structure shown in Figure 11.

That is to say, indoor unit among Figure 23 has and the isolated front panel 100 of the suction face of front baffle 200, make front baffle 200 from suction face angle of inclination ' θ ', wherein front panel 100 closely contacts with the suction face of front baffle 200, to close air intake, up to driving independent driver element (not shown) to open the predetermined angle of inclination of front panel.

The indoor unit of Figure 24 has and is similar to the front panel 100 that cantilever is installed to a side of front baffle 200 the samely, wherein front panel 100 closely contacts with the suction face of front baffle 200, up to driving independent driver element (not shown), thereby open suction face so that front panel integrally separates identical distance with suction face.

Indoor unit among Figure 23 and 24 has the heat exchanger for rectilinear cross-section.

Indoor unit among Figure 25 has front panel 100, and front panel 100 closely contacts with the suction face of front baffle 200, up to driving independent driver element (not shown) so that front panel 100 separate with suction face.Heat exchanger 500 has and is rectilinear cross section, and it is thinner than mid portion at the thickness towards the opposite edges place of cross flow fan 900.That is to say that the mid portion of heat exchanger 500 has two row's refrigerant pipes, and opposite edges has single refrigerant pipe.

Indoor unit among Figure 26 has front panel 100, and this front panel 100 is separated a distance with the suction face of front baffle 200, up to driving independent driver element (not shown) so that front panel 100 separates greatlyyer with suction face.

Heat exchanger 500 integral body have ' V ' tee section.

Simultaneously, with reference to Figure 25 and 26, can have the thickness thinner than mid portion towards the opposite edges of the heat exchanger of cross flow fan 900.

Preferably, indoor unit according to the embodiment of the present invention is installed on the wall vertically.Certainly, indoor unit according to the embodiment of the present invention can flatly be installed.Perhaps, indoor unit according to the embodiment of the present invention can be installed along any direction, such as being installed in obliquity.Yet, consider the position and the airflow direction of air outlet slit, preferably, indoor unit is according to the embodiment of the present invention installed vertically.

It will be apparent to those skilled in the art that and under the situation that does not deviate from the spirit or scope of the present invention, can make various modifications and variations the present invention.Thereby, contain modification and the modification that gets final product in the scope of appended claims and equivalent thereof that fall into of the present invention as long as mean the present invention.

Claims

1. indoor unit that is used for air-conditioning comprises:

Front baffle, it is made into can be by its anterior air that sucks;

With the bedframe that described front baffle is connected, described bedframe have motor base and be positioned at sidepiece and the bottom on outlet, be used to install the motor of drive fan on the described motor base;

Guide frame between described front baffle and described bedframe is used for steering current;

Heat exchanger between described front baffle and described guide frame;

Fan is used for having taken place to the outside drain of described indoor unit the air of heat exchange; And

Front panel, it is installed in the place ahead of described front baffle, with the spaced apart space of described front baffle.

2. indoor unit according to claim 1, wherein, described front panel comprises the marginal portion, each marginal portion has the thickness thinner than the other parts of described front panel, on the inner surface of described front panel, have the inclined-plane, be used for when sucking air, reducing flow resistance by described front panel.

3. indoor unit according to claim 1, wherein, described front baffle has top side inlet and bottom side inlet, and described top side inlet and described bottom side inlet are formed has curve form, is used to be minimized in the flow resistance when sucking air.

4. indoor unit according to claim 1, wherein, described guide frame comprises:

The hole is used for guiding the air-flow that is inhaled into described fan;

Last scrollwork and following scrollwork are used to guide from the air-flow of described fan discharging and the emission direction of fixed air.

5. indoor unit according to claim 4, wherein, the described scrollwork of going up has by two aggregate surfaces that curved surface forms around described fan, has at the separation of the first quartile of described guide frame

Coordinate, wherein

The diameter of expression turbofan, and x and y represent the coordinate of initial point in the center of described turbofan.

6. indoor unit according to claim 4, wherein, described guide frame also comprises the heat exchanger supports part on the opposed surface that is positioned at described scrollwork, is used to remain to the gap of described heat exchanger.

7. indoor unit according to claim 4, wherein, the gap ' G ' between the bottom that described hole begins and the bottom of described heat exchanger be turbofan diameter 9.5～10.5%.

8. indoor unit according to claim 4, wherein, ratio

In 0.05～0.07 scope, wherein ' R ' represents the radius of described fan, and

The diameter of representing described fan.

9. indoor unit according to claim 1, wherein, described guide frame comprises towards the edge plane of the front side bending of described indoor unit, is used to guide the air discharging.

10. indoor unit according to claim 1, wherein, described fan is a turbofan, comprising:

Shroud has the center suction opening;

Hub has relative with described shroud and separates the mainboard of preset distance with described shroud, is used for connecting in centre the turning cylinder of described motor; And

A plurality of blades, each described blade has predetermined curvature, is connected between the described mainboard and described shroud of described hub along the circumferencial direction of described hub.

11. indoor unit according to claim 10, wherein, the end segment of the described blade of described turbofan distance is variable or equates, and the width of described blade begins to have identical size to described end from the coupling part to described hub.

12. indoor unit according to claim 10, wherein, if discharge area is fixed the diameter of described fan then

Ratio with the width ' L ' of described blade

Be 6.5～7.5.

13. according to each described indoor unit of claim 10 to 12, wherein, the end of described blade is positioned in the position much at one, edge with described shroud.

14. indoor unit according to claim 1, wherein, the described motor base that is positioned at the centre of described bedframe is the preceding side-prominent annular flange portion to described indoor unit.

15. indoor unit according to claim 1 also is included near the rib described motor base of being positioned on the dorsal part of described bedframe, is used to increase intensity and different with the intrinsic frequency of described motor.

16. indoor unit according to claim 1, wherein, described bedframe has makes the thickness ' t ' of described bedframe outside the intrinsic frequency of described motor.

17. indoor unit according to claim 1 also comprises the electronics dust-collector on the anterior suction face that is positioned at described heat exchanger.

18. indoor unit according to claim 17, wherein, described electronics dust-collector is installed to be the one preset distance place, center that is positioned at away from described fan.

19. according to claim 17 or 18 described indoor units, wherein, it is 5～6 position that described electronics dust-collector is installed in ratio l/h, wherein " l " expression from the center of described turbofan to the distance at the center of described electronics dust-collector, and the height of " h " expression from the upper surface of described turbofan to the center of described electronics dust-collector.

20. indoor unit according to claim 1, wherein, the air intake of described front baffle is provided with filter, is used for impurity screening.

21. an indoor unit that is used for air-conditioning comprises:

Front baffle, it is made into can be by its anterior air that sucks;

With the bedframe that described front baffle is connected, have two motor bases on the inboard that is positioned at the outlet on sidepiece and the bottom and is positioned at the front portion, be used to install two motor that drive turbofan on the described motor base;

Heat exchanger between described front baffle and described guide frame;

Two turbofan are used for having taken place when through described heat exchanger to the outside drain of described indoor unit the air of heat exchange; And

22. an indoor unit that is used for air-conditioning comprises:

Front baffle, it is made into can be by its anterior air that sucks;

With the bedframe that described front baffle is connected, have be positioned at the outlet on the sidepiece and be positioned at upside or the inboard of downside on motor base, described motor base is used to install the motor that drives cross flow fan;

Be positioned at the heat exchanger at described front baffle rear;

Be positioned at the left side at described heat exchanger rear and the cross flow fan on right side; And

Be positioned at the front panel in described front baffle the place ahead,, be used to block the suction face of described front baffle with the spaced apart space of described front baffle.

23. according to claim 21 or 22 described indoor units, wherein, described front panel is installed as the suction face predetermined oblique angle with respect to described front baffle.

24. according to claim 21 or 22 described indoor units, wherein, described front panel is a side that is fixed to described front baffle cantilever-shapedly.

25. indoor unit according to claim 22, wherein, described heat exchanger has rectilinear cross-section.

26. indoor unit according to claim 22, wherein, described heat exchanger has ' V ' tee section.

27. according to claim 25 or 26 described indoor units, wherein, described heat exchanger has the opposed edges part towards described cross flow fan, the thickness of each described marginal portion is than the thin thickness of the mid portion of described heat exchanger.