CN107816751A - The indoor set of wall-hanging air conditioner - Google Patents
The indoor set of wall-hanging air conditioner Download PDFInfo
- Publication number
- CN107816751A CN107816751A CN201610819277.6A CN201610819277A CN107816751A CN 107816751 A CN107816751 A CN 107816751A CN 201610819277 A CN201610819277 A CN 201610819277A CN 107816751 A CN107816751 A CN 107816751A
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- CN
- China
- Prior art keywords
- air
- indoor set
- wind
- housing
- mixed
- 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.)
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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
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
-
- 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
-
- 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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
-
- 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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
-
- 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
- F24F13/30—Arrangement or mounting of heat-exchangers
Abstract
The invention provides a kind of indoor set of wall-hanging air conditioner, it includes the housing formed with air inlet and air outlet and the heat exchanger and blower fan that are arranged in housing, also include main air duct, the heat exchange wind with heat exchanger heat exchange for blower fan to be discharged is guided to air outlet, main air duct is limited by spiral case and snail tongue and formed, one end of snail tongue may be pivotally mounted to housing, to adjust the spacing of snail tongue and spiral case, and then the area of passage in regulating main air road by pivoting；With mixed wind air channel, indoor environment and main air duct are connected, is mixed for the air of indoor environment to be guided to going out in main air duct with heat exchange wind.The indoor function of the present invention still has higher mixed air quantity when the blower fan slow-speed of revolution is run with mixed wind mode operation.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of indoor set of wall-hanging air conditioner.
Background technology
The indoor set of some wall-hanging air conditioners is using mixed wind pattern air-out, that is, the air of indoor environment is guided to wind
After being mixed in road with heat exchange wind, further blown out with from air outlet, to reduce (during heating) or be lifted leaving air temp (during refrigeration),
Make one to feel uncomfortable to avoid the heat exchange wind of low temperature (during refrigeration) or high temperature (during heating) from blowing on human body.
Currently used mixed wind pattern is in the presence of blower fan, heat exchange wind is flowed out air outlet at a high speed and is produced and be less than
The area of low pressure of indoor air pressure, room air are drawn at air outlet under differential pressure action, mixed with heat exchange wind.
However, when the blower fan slow-speed of revolution is run, foregoing pressure difference will diminish, and make to enter in air channel the air capacity mixed with heat exchange wind (i.e.
Mixed air quantity) greatly reduce, influence mixed wind effect.
The content of the invention
It is an object of the present invention to provide a kind of indoor set of wall-hanging air conditioner, its can with mixed wind mode operation, and
Still there is higher mixed air quantity in blower fan slow-speed of revolution operation.
It is another object of the present invention to the mixed wind pattern of indoor set is turned on and off according to the needs of user.
Therefore, the invention provides a kind of indoor set of wall-hanging air conditioner, it is included formed with air inlet and air outlet
Housing and the heat exchanger and blower fan being arranged in housing, in addition to main air duct, are changed with heat exchanger for discharge blower fan
The heat exchange wind of heat, which is guided to air outlet, main air duct, to be limited by spiral case and snail tongue and formed, and one end of snail tongue may be pivotally mounted to
Housing, to adjust the spacing of snail tongue and spiral case, and then the area of passage in regulating main air road by pivoting；With mixed wind air channel, connect
Logical indoor environment and main air duct, mixed for the air of indoor environment to be guided to going out in main air duct with heat exchange wind.
Alternatively, formed with the arc-shaped rack extended towards the direction away from main air duct in snail tongue, the center of circle of arc-shaped rack falls
On the pivot axis of snail tongue；And it is additionally provided with housing with the gear of arc-shaped rack cooperation and for drive gear rotation
First driving means.
Alternatively, air outlet is located at the lower front of housing；And snail tongue is located at the front of spiral case, and it is close to air outlet
One end may be pivotally mounted to housing.
Alternatively, indoor set also includes air door, is pivotably disposed in mixed wind air channel, to adjust mixed wind by pivoting
The area of passage in air channel.
Alternatively, mixed wind air channel is limited by wainscot and lower wall panels forms, and wainscot extends back from the lower edge of spiral case,
Lower wall panels are located at the lower section of wainscot, and the both ends of its length direction along housing are folded upward to be connected to housing.
Alternatively, air door includes door-plate and the cursor being fixed on door-plate, and cursor may be pivotally mounted to wainscot,
So that door-plate can rotate between the expanded position of the stowed position of wainscot lower surface and the mixed wind air channel of capping is posted by.
Alternatively, air door also includes the second drive device, is configured to controllably drive cursor to rotate.
Alternatively, the leading edge of wainscot is located in the extended surface of spiral case formed with deflection plate, deflection plate.
Alternatively, indoor set also includes wind deflector, is rotatably arranged at air outlet, for adjusting the air-out of air outlet
Direction.
Alternatively, air inlet is located at the top of housing.
The indoor set of the wall-hanging air conditioner of the present invention, one end of snail tongue are pivotably mounted on housing, can pass through pivot
To adjust the spacing of snail tongue and spiral case, and then the area of passage in regulating main air road.When the blower fan slow-speed of revolution is run, pivot can be passed through
Snail tongue reduces the area of passage of main air duct, lifts the flow velocity of heat exchange wind, reduces pressure, and increase indoor air is handed over heat
The pressure difference of wind is changed, promotes more air to enter main air duct from mixed wind air channel, that is, increases mixed air quantity, lifts mixed wind effect.
Further, indoor set of the invention, pinion and rack is formed using arc-shaped rack and gear, is easy to drive snail
Tongue pivots.
Further, indoor set of the invention, by setting air door to realize the controlled operation of mixed wind pattern, in refrigeration mould
Air door fully on mixed wind air channel can be made during formula, in the presence of blower fan, the heat exchange wind in housing blows out at a high speed air outlet, main
Atmospheric pressure in air channel is relatively low, and the wind of indoor set indoor environment can be made to be drawn onto through mixed wind air channel at exhaust air flue and heat exchange
Wind mixes, and lifts leaving air temp, makes air-out more comfortable.And in heating mode, air door completely closes or mixed wind is closed in part
Air channel, avoid mixed air quantity excessive and seriously reduce leaving air temp and then cause user to feel uncomfortable.
Further, indoor set of the invention, deflection plate is provided with the wainscot in mixed wind air channel, can be made from mixed wind wind
Road flows to the wind of air outlet through deflection plate rear steering, reduction both interflow caused by noise consistent with the flow direction of heat exchange wind.
In addition, the setting of deflection plate can also be such that the Mixed Zone of the air-out of main air duct and the air-out in mixed wind air channel subtracts away from indoor set
The condensation of each component surface of few indoor set.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the schematic diagram of the indoor set of the wall-hanging air conditioner of one embodiment of the invention；
Fig. 2 is the sectional view obtained along the indoor set of the perpendicular cut away view 1 of a front and rear extension, and wherein air door, which is in, receives
Play position；
Fig. 3 is schematic diagram of the indoor set after snail tongue pivots certain angle in Fig. 2；
Fig. 4 is the schematic diagram of the snail tongue of the indoor set in Fig. 2, arc-shaped rack and gear；
Fig. 5 is schematic diagram of the indoor set after air door turns to expanded position in Fig. 2.
Embodiment
The indoor set of the wall-hanging air conditioner of the present invention, during being described below, institute are described below with reference to Fig. 1 to Fig. 5
" on ", " under ", " preceding " and " rear " claimed be on the basis of the normal operating condition of indoor set for.Wherein, Fig. 1 is this hair
The schematic diagram of the indoor set of the wall-hanging air conditioner of bright one embodiment；Fig. 2 is cutd open along the perpendicular of a front and rear extension
The sectional view that Fig. 1 indoor set obtains is cut, wherein air door is in stowed position；Fig. 3 is that the indoor set in Fig. 2 pivots one in snail tongue
Determine the schematic diagram after angle；Fig. 4 is the schematic diagram of the snail tongue of the indoor set in Fig. 2, arc-shaped rack and gear, Fig. 2 and Fig. 3 arrows
Head illustrates the flow direction of wind.
As depicted in figs. 1 and 2, the embodiments of the invention provide a kind of indoor set 10 of wall-hanging air conditioner, it is in general manner
It may include housing 100, heat exchanger 200, blower fan 300, main air duct 400 and mixed wind air channel 500.Wherein, defined inside housing 100
Receiving space, and with for from the air inlet 110 of indoor environment air intake and for the air outlet 120 to indoor environment air draft.
Heat exchanger 200 is arranged in housing 100, for carrying out heat exchange with the wind flowed into from air inlet 110, forms heat exchange wind.It is right
For pump type heat wall-hanging air conditioner, indoor set 10, which has, freezes and heats two kinds of mode of operations, and heat is handed under two kinds of mode of operations
It is respectively cold wind and hot blast to change wind.Blower fan 300 is used to promote air to flow from air inlet 110 towards air outlet 120, accelerates refrigeration
Or heating process, lift refrigerating capacity or heating capacity.Main air duct 400 is used for having been exchanged heat with heat exchanger 200 of discharging of blower fan 300
Heat exchange wind is guided to air outlet 120.Mixed wind air channel 500 connects indoor environment and main air duct 400, for by the sky of indoor environment
Gas is guided to after going out in main air duct 400 and mixed with heat exchange wind, is further blown out with from air outlet 120, is freezed with machine 10 indoors
During operation, leaving air temp is lifted, indoors during 10 heating operation of machine, leaving air temp is reduced, avoids temperature too low or too high heat
Exchange wind makes one to feel uncomfortable to human body.
Specifically, as shown in Figures 2 and 3, main air duct 400 is limited and formed by spiral case 410 and snail tongue 420, and the one of snail tongue 420
End may be pivotally mounted to housing 100, to adjust the spacing of snail tongue 420 and spiral case 410, and then regulating main air road by pivoting
400 area of passage.When blower fan 300 is run with the slow-speed of revolution, snail tongue 420 can be made to pivot certain angle, example towards the direction of spiral case 410
Fig. 3 state is such as switched to from Fig. 2 state, the x1 of its minimum distance with spiral case 410 as shown in Figure 2 is reduced to Fig. 3 institutes
The x2 shown, the area of passage of main air duct 400 is so reduced, the flow velocity of heat exchange wind is improved, reduces heat exchange wind
Pressure, so as to increase the pressure difference of indoor air and heat exchange wind, more air are promoted to enter main wind from mixed wind air channel 500
Road 400, mixed air quantity is increased, lift mixed wind effect.
In certain embodiments, snail tongue 420 is rotated using pinion and rack, as shown in Figures 2 to 4, in snail tongue 420
Arc-shaped rack 430 formed with direction (front upper place i.e. shown in Fig. 2) extension towards remote main air duct 400, arc-shaped rack 430
The center of circle falls on the pivot axis (i.e. the axis of the pivotal axis 422 of Fig. 4 snail tongues 420) of snail tongue 420.It is additionally provided with housing 100
The gear 440 coordinated with arc-shaped rack 430, and the first driving means (not shown) rotated for drive gear 440.First
Drive device can be stepper motor, it can be made to be controlled by air-conditioner controller, be adjusted with the height of the rotating speed according to blower fan 300
The position of snail tongue 420.
As depicted in figs. 1 and 2, air outlet 120 can be located at the lower front of housing 100, and along the length direction of housing 100
(i.e. the x directions indicated in Fig. 1) extends, that is, forms strip.Air inlet 110 can be located at the top of housing 100.Such as Fig. 2, spiral case
410 in the curved extension in the rear of blower fan 300, heat exchange wind is guided to air outlet 120, snail tongue 420 is located at spiral case 410
Front, and it may be pivotally mounted to housing 100 close to one end of air outlet 120, one end bent outward away from air outlet 120
Substantially 90 ° of folding.
In certain embodiments, as shown in Figure 2 and Figure 5, indoor set 10 also includes air door 600, and air door 600 is pivotly set
It is placed in mixed wind air channel 500, to adjust the area of passage in mixed wind air channel 500 by pivoting.
In this way, indoors 10 refrigerating operaton of machine when, the fully on mixed wind air channel 500 (with reference to figure 2) of air door 600 can be made,
In the presence of blower fan 300, heat exchange wind in housing 100 blowout air outlet 120 at a high speed, atmospheric pressure in main air duct 400 compared with
It is low, the air of the indoor environment of indoor set 10 (flow direction is represented with hollow arrow) through mixed wind air channel 500 be drawn onto at main air duct 400 with
Heat exchange wind mixes, and can lift leaving air temp, make air-out more comfortable.Meanwhile being mixed into for indoor air also increases out
The air output in air port 120, the air circulation of indoor environment is accelerated, improves refrigerating speed.
And indoors 10 heating mode of machine when, air door 600 completely closes mixed wind air channel 500 (with reference to figure 5), i.e., mixed wind pattern
It is closed, mixed air quantity can be avoided excessive and seriously reduce leaving air temp, cause user to feel uncomfortable.Certainly, also can be incomplete
Mixed wind air channel 500 is closed, and the area of passage in mixed wind air channel 500 is only adjusted by controlling the rotational angle of air door 600, is adjusted
The intake in mixed wind air channel 500, the leaving air temp of air outlet 120 is adjusted with this.
Preferably, mix wind air channel 500 to be limited and formed by wainscot 510 and lower wall panels 520, wherein wainscot 510 is from spiral case
410 lower edge extends back, and lower wall panels 520 are located at the lower section of wainscot 510, and the two of its length direction along housing 100
End is folded upward to be connected to housing 100 (such as Fig. 1).More specifically, such as Fig. 2, wainscot 510 may include to be located behind substantially
Horizontal-extending part and the forward upward in front tilt the part of extension.Lower wall panels 520 include be located behind approximately along
Horizontal-extending part and the forward downward positioned at front tilt the part of extension.In fig. 2, the flow direction of heat exchange wind is
Towards front lower place, the wind of indoor environment is directed towards front upper place into the flow direction in mixed wind air channel 500, and both flow directions are big
Cause vertical.
Such as Fig. 2, air door 600 may be pivotally mounted to wainscot 510.Specifically, air door 600 includes door-plate 610 and fixed
Cursor 620 on door-plate 610, cursor 620 may be pivotally mounted to wainscot 510, so that door-plate 610 can be posted by
Turn between the expanded position (with reference to figure 5) in the stowed position (with reference to figure 2) of the lower surface of wainscot 510 and the mixed wind air channel 500 of capping
It is dynamic.
Air door 600 also includes the second drive device 630, is configured to controllably drive cursor 620 to rotate.Second driving dress
It can be stepper motor to put 630, it can be made to be controlled by air-conditioner controller, to be needed to drive cursor 620 to rotate according to user,
It is turned on and off mixed wind pattern.
In certain embodiments, the leading edge of wainscot 510 can be made to be bent to form deflection plate 530, deflection plate 530 downwards
In in the extended surface of spiral case 410, as shown in Fig. 2 wind is after indoor environment is flow at deflection plate 530, by forward downward baffling, with
Collaborate again with heat exchange wind after identical with the flow direction of heat exchange wind, reduce noise caused by both interflow.In addition, baffling
The setting of plate 530 can also be such that the Mixed Zone of the wind of main air duct 400 and the wind in mixed wind air channel 500 is reduced away from indoor set 10
The condensation of 10 each component surface of indoor set.
In addition, the lower surface of wainscot 510 formed with it is multiple be parallel to each other and along housing 100 length direction extend
Convex tendon 512, to form corrugated surface.Corrugated surface can reduce the flowing velocity of indoor air, reduce condensation at air outlet 120
Generation.
Indoor set 10 may also include wind deflector 700, and it is rotatably arranged at air outlet 120, for adjusting air outlet
120 air-out direction.In addition, blower fan 300 is preferably cross flow fan, heat exchanger 200 is finned heat exchanger.In cross flow fan
Length direction (Fig. 1 x direction) of the mandrel along indoor set 10 is set, and finned heat exchanger can be multi-segment structure, to enclose
The periphery of cross flow fan is wound on, lifts air circulation effect, strengthens heat exchange amount.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of indoor set of wall-hanging air conditioner, including the housing formed with air inlet and air outlet and it is arranged at the housing
Interior heat exchanger and blower fan, in addition to：
Main air duct, the heat exchange wind with heat exchanger heat exchange for the blower fan to be discharged are guided to the air outlet,
The main air duct is limited by spiral case and snail tongue and formed, and one end of the snail tongue may be pivotally mounted to the housing, to pass through pivot
Transfer and adjust the snail tongue and the spacing of the spiral case, and then adjust the area of passage of the main air duct；With
Mixed wind air channel, connection indoor environment and the main air duct, for by the air of indoor environment guide to it is described go out main air duct
It is interior to be mixed with the heat exchange wind.
2. indoor set according to claim 1, wherein
Formed with the arc-shaped rack extended towards the direction away from the main air duct in the snail tongue, the center of circle of the arc-shaped rack falls
On the pivot axis of the snail tongue；And
The gear coordinated with the arc-shaped rack and first for driving the pinion rotation is additionally provided with the housing
Drive device.
3. indoor set according to claim 2, wherein
The air outlet is located at the lower front of the housing；And
The snail tongue is located at the front of the spiral case, and it may be pivotally mounted to the shell close to one end of the air outlet
Body.
4. indoor set according to claim 3, in addition to：
Air door, it is pivotably disposed in the mixed wind air channel, to adjust the area of passage in the mixed wind air channel by pivoting.
5. indoor set according to claim 4, wherein
The mixed wind air channel is limited by wainscot and lower wall panels to be formed, and the wainscot prolongs backward from the lower edge of the spiral case
Stretch, the lower wall panels are located at the lower section of the wainscot, and the both ends of its length direction along the housing are folded upward to connect
It is connected to the housing.
6. indoor set according to claim 5, wherein
The air door includes door-plate and the cursor being fixed on the door-plate, and the cursor may be pivotally mounted on described
Wallboard, so that the door-plate can be posted by the stowed position of the wainscot lower surface and cover the expansion in the mixed wind air channel
Rotated between position.
7. indoor set according to claim 6, wherein the air door also includes：
Second drive device, it is configured to controllably drive the cursor to rotate.
8. indoor set according to claim 5, wherein
The leading edge of the wainscot is located in the extended surface of the spiral case formed with deflection plate, the deflection plate.
9. indoor set according to claim 1, in addition to：
Wind deflector, it is rotatably arranged at the air outlet, for adjusting the air-out direction of the air outlet.
10. indoor set according to claim 1, wherein
The air inlet is located at the top of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819277.6A CN107816751B (en) | 2016-09-12 | 2016-09-12 | Indoor unit of wall-mounted air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819277.6A CN107816751B (en) | 2016-09-12 | 2016-09-12 | Indoor unit of wall-mounted air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107816751A true CN107816751A (en) | 2018-03-20 |
| CN107816751B CN107816751B (en) | 2020-11-03 |
Family
ID=61600564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610819277.6A Active CN107816751B (en) | 2016-09-12 | 2016-09-12 | Indoor unit of wall-mounted air conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN107816751B (en) |
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| CN109237707A (en) * | 2018-08-24 | 2019-01-18 | 青岛海尔空调电子有限公司 | A kind of air conditioning control method |
| CN109237706A (en) * | 2018-08-24 | 2019-01-18 | 青岛海尔空调电子有限公司 | A kind of air conditioning control method |
| CN110410867A (en) * | 2019-08-26 | 2019-11-05 | 珠海格力电器股份有限公司 | The method of indoor unit, air conditioner and air conditioner control |
| CN110864357A (en) * | 2018-08-07 | 2020-03-06 | 青岛海尔空调器有限总公司 | Air conditioner with drainage and shunting functions |
| CN113074446A (en) * | 2021-03-09 | 2021-07-06 | 海信（山东）空调有限公司 | Air conditioner control method and device, air conditioner and computer readable storage medium |
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| CN110864357A (en) * | 2018-08-07 | 2020-03-06 | 青岛海尔空调器有限总公司 | Air conditioner with drainage and shunting functions |
| CN110864357B (en) * | 2018-08-07 | 2021-06-11 | 重庆海尔空调器有限公司 | Air conditioner with drainage and shunting functions |
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| CN110410867B (en) * | 2019-08-26 | 2023-12-08 | 珠海格力电器股份有限公司 | Indoor unit, air conditioner and air conditioner control method |
| CN113074446A (en) * | 2021-03-09 | 2021-07-06 | 海信（山东）空调有限公司 | Air conditioner control method and device, air conditioner and computer readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107816751B (en) | 2020-11-03 |
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