CN105276784A - Wall-mounted air conditioner indoor unit - Google Patents
Wall-mounted air conditioner indoor unit Download PDFInfo
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- CN105276784A CN105276784A CN201410274545.1A CN201410274545A CN105276784A CN 105276784 A CN105276784 A CN 105276784A CN 201410274545 A CN201410274545 A CN 201410274545A CN 105276784 A CN105276784 A CN 105276784A
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Abstract
The invention discloses a wall-mounted air conditioner indoor unit comprising an indoor unit body, an air outlet arranged in a lower portion of the indoor unit body, a blinds assembly arranged in the air outlet, an air guide plate support, and an air guide plate pivoted with the air guide plate support; the blinds assembly is arranged on an inner side of the air guide plate; the air guide plate comprises an upper air guide plate and a lower air guide plate independently swinging; the upper air guide plate is arranged close to an upper side wall of the air outlet; the lower air guide plate is arranged close to a lower side wall of the air outlet; when the air guide plate closes, the upper air guide plate or the lower air guide plate can cover the air outlet. The wall-mounted air conditioner indoor unit can enlarge an air supply scope, can improve the air conditioner usage comfort level, and the temperature in the room is more uniform.
Description
Technical field
The present invention relates to refrigeration technology field, particularly relate to a kind of wall-hanging indoor unit of air conditioner.
Background technology
See Fig. 1, existing wall-hanging indoor unit of air conditioner comprises housing, is positioned at the evaporimeter 100 of housing, wind wheel 110, the blinds 120 being positioned at lower housing portion, wind deflector support (not shown), upper exhausting plate 130, lower exhausting plate 140, and with the wind deflector 150 etc. of wind deflector support pivot joint.Wherein, air outlet is formed between upper exhausting plate 130 and lower exhausting plate 140, blinds 120 and wind deflector 150 are all between upper exhausting plate 130 and lower exhausting plate 140, and blinds 120 and upper exhausting plate 130 and/or lower exhausting plate 140 pivot joint, and be positioned at the inner side of wind deflector 150.
In order to obtain preferably wind effect up and down, as shown in Figure 1, wind deflector 150 is usually one-body molded by upper and lower two pieces of wind deflectors (wind deflector 151 outside air outlet and the wind deflector 152 near blinds 120), because the spatial accommodation of air outlet is limited, in order to meet the requirement of wind deflector 150 scope of activities, therefore the size of blinds 120 reduced and compress the space shared by blinds 120, this can weaken the left and right wind effect of blinds 120 undoubtedly; Equally, be subject to the installing space restriction of blinds 120, the width dimensions of wind deflector 151 and wind deflector 152 is also restricted, and air supply direction is poor, be difficult to meet the requirement of blowing on a large scale, the region away from air conditioner room unit directly can not be subject to the impact of cold wind or the hot blast blown out from air outlet.It can thus be appreciated that existing uptake of indoor machine of air conditioner structure sweeps wind weak effect, easily causes the problems such as room temperature skewness, affects the comfortableness of user's using air-condition.
Foregoing, only for auxiliary understanding technical scheme of the present invention, does not represent and admits that foregoing is prior art.
Summary of the invention
Main purpose of the present invention is to solve wall-hanging air conditioner air outlet of indoor set structure in prior art and sweeps demeanour and enclose little technical problem.
For achieving the above object, the invention provides a kind of wall-hanging indoor unit of air conditioner, comprise indoor set body, be positioned at the air outlet of described indoor set body lower part, be positioned at the louver assembly of described air outlet, wind deflector support and the wind deflector with the pivot joint of described wind deflector support, described louver assembly is positioned at the inner side of described wind deflector, described wind deflector comprises the upper wind deflector of independent swing and lower wind deflector, described upper wind deflector is arranged near the upper side wall of described air outlet, described lower wind deflector is arranged near the lower wall of described air outlet, when described wind deflector closes, described air outlet covers by one of described upper wind deflector and described lower wind deflector.
Preferably, described upper wind deflector around the first axle of described wind deflector holder pivots, and described lower wind deflector around the second axis of described wind deflector holder pivots all on described between wind deflector and described lower wind deflector.
Preferably, described upper wind deflector comprises the first outer end outside the first inner and close described air outlet inside described air outlet, and the described first inner distance to described first axle is less than the distance of described first outer end to described first axle; Described lower wind deflector comprises the second outer end outside the second inner and close described air outlet inside described air outlet, and the described second inner distance to described second axis is less than the distance of described second outer end to described second axis.
Preferably, the width of described upper wind deflector is less than or equal to the width of described lower wind deflector.
Preferably, described lower wind deflector covers described air outlet when closed, and described upper wind deflector is covered in described air outlet by described lower wind deflector.
Preferably, the outer surface of described lower wind deflector is curved, and described lower wind deflector is when closed, and the outer surface of described lower wind deflector and the front panel of described indoor set body seamlessly transit.
Preferably, the width of described upper wind deflector is greater than the width of described lower wind deflector.
Preferably, described upper wind deflector covers described air outlet when closed, and described lower wind deflector is covered in described air outlet by described upper wind deflector.
Preferably, the outer surface of described upper wind deflector is curved, and described upper wind deflector is when closed, and the outer surface of described upper wind deflector and the front panel of described indoor set body seamlessly transit.
Preferably, described louver assembly comprises connecting rod and some wind blades arranged along horizontal axis, described wind blade is arcs of recesses towards the end face of the air side of described air outlet, described connecting rod is arranged at intervals with some first articulated sections, the bottom of described wind blade is provided with the second articulated section and the 3rd articulated section, the first articulated section one_to_one corresponding pivot joint on second articulated section of wind blade described in each and described connecting rod, the 3rd articulated section of wind blade described in each is articulated in the lower wall of described air outlet.
A kind of wall-hanging indoor unit of air conditioner provided by the present invention, its wind deflector comprises the upper wind deflector of independent swing and lower wind deflector, and upper wind deflector is arranged near the upper side wall of air outlet, and lower wind deflector is arranged near the lower wall of described air outlet; When air-conditioner runs, upper wind deflector and lower wind deflector are around respective pivot joint axis oscillating, in the process of carrying out upper and lower wind-guiding, the space that upper wind deflector and lower wind deflector take air outlet inside is little, larger activity space has been reserved to louver assembly, therefore by increasing the size of louver assembly, to improve left and right wind effect; In addition, when wind deflector closes, air outlet covers by one of upper wind deflector and lower wind deflector, adopt the wind deflector of this version, the width of upper wind deflector and/or lower wind deflector can be increased, and the pendulum angle scope of upper wind deflector and lower wind deflector is larger, air-supply is pointed to accurately, improves upper and lower wind effect; It can thus be appreciated that technical scheme of the present invention overcomes wall-hanging air conditioner air outlet of indoor set structure in prior art and sweeps demeanour and enclose little technical problem, reaches expansion blowing range, make room temperature more even, and improve the object of air-conditioner comfort.
Accompanying drawing explanation
Fig. 1 is the structural representation of wall-hanging indoor unit of air conditioner of the prior art;
Fig. 2 is the structural representation of wall-hanging indoor unit of air conditioner first embodiment of the present invention;
The location status schematic diagram of Fig. 3 better refrigeration wind-guiding angle for the wind deflector shown in Fig. 2 is in;
Fig. 4 is the better location status schematic diagram heating wind-guiding angle for the wind deflector shown in Fig. 2 is in;
Fig. 5 is in the location status schematic diagram of maximum wind direction for the wind deflector shown in Fig. 2;
Fig. 6 is the structural representation of wall-hanging indoor unit of air conditioner second embodiment of the present invention;
Fig. 7 is the structural representation of wall-hanging indoor unit of air conditioner of the present invention 3rd embodiment.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further see accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of wall-hanging indoor unit of air conditioner, see Fig. 2, in one embodiment, this wall-hanging indoor unit of air conditioner comprises indoor set body, be positioned at the air outlet 400 of described indoor set body lower part, be positioned at the louver assembly of described air outlet 400, wind deflector support (not shown) and the wind deflector 600 with the pivot joint of wind deflector support, and louver assembly is positioned at the inner side of wind deflector 600, wherein louver assembly can carry out the wind-guiding of left and right directions, wind deflector 600 can carry out the wind-guiding of above-below direction, in conjunction with louver assembly and wind deflector 600 wind-guiding effect and the cold wind sent via air outlet 400 or hot blast are directed to appointed area.Be understandable that, indoor set body described herein comprises the parts of wall-hanging indoor unit of air conditioner indispensability, ratio heat exchanger 200, wind wheel 300 and housing etc. as illustrated in the drawing, and these parts are known by those skilled in the art, therefore not to repeat here.
Particularly, louver assembly comprises connecting rod (not shown) and some wind blades 500 arranged along horizontal axis, and the concrete quantity of wind blade 500 can be determined according to the actual size specification of wall-hanging indoor unit of air conditioner, is not restricted this.In better embodiment, wind blade 500 is arcs of recesses towards the end face 530 of the air side of air outlet 400, thus form the clearance position dodging wind deflector 600, to install larger sized wind blade 500 and wind deflector 600 in limited air outlet 400 spatial accommodation, thus reach the object expanding and sweep demeanour and enclose.In the present embodiment, connecting rod is arranged at intervals with some first articulated section (not shown)s, the bottom of wind blade 500 is provided with the second articulated section 510 and the 3rd articulated section 520, second articulated section 510 and the first articulated section one_to_one corresponding pivot joint on connecting rod of each wind blade 500,3rd articulated section 520 of each wind blade 500 is articulated in the lower wall 420 of air outlet 400, therefore each wind blade 500 can turn an angle around the 3rd articulated section 520 under manual drive or motor drive, thus realizes left and right wind-guiding.
In the present embodiment, wind deflector 600 comprises the upper wind deflector 610 of independent swing and lower wind deflector 620, upper wind deflector 610 is arranged near the upper side wall 410 of air outlet 400, lower wind deflector 620 is arranged near the lower wall 420 of air outlet 400, wind deflector support is provided with the public articulated section be connected with upper wind deflector 610 and lower wind deflector 620 pivotable respectively, upper wind deflector 610 and lower wind deflector 620 are equipped with the female articulated section with the corresponding pivot joint in male articulated section of wind deflector support, when the quantity of female articulated section of upper wind deflector 610 is greater than 1, female articulated section is arranged along horizontal axis, namely the length direction along upper wind deflector 610 is arranged, in like manner, female articulated section on lower wind deflector 620 is also arranged along horizontal axis, preferably, public articulated section is the rotating shaft of projection on wind deflector support, female articulated section is be arranged on the axis hole on wind deflector 610 and lower wind deflector 620, or, public articulated section is be arranged on the axis hole on wind deflector support, female articulated section is the rotating shaft of projection on upper wind deflector 610 and lower wind deflector 620.Be understandable that, the motor that two covers work alone is provided with in indoor set body, be respectively used to drive wind deflector 610 and lower wind deflector 620 to rotate, such as, wherein one end relative wind deflector support under the motor of indoor set body drives of upper wind deflector 610 rotates, in like manner, wherein one end of lower wind deflector 620 also under the motor of indoor set body drives relatively wind deflector support rotate.When wind deflector 600 closes, air outlet 400 covers with one of lower wind deflector 620 by upper wind deflector 610.
When wall-hanging indoor unit of air conditioner runs, lower wind deflector 620 shown in Fig. 2 and Fig. 6 turns clockwise around its pivot points 621, to open air outlet 400, and upper wind deflector 610 turns clockwise around its pivot points 611 after relatively playing wind deflector 620 to postpone a period of time, thus avoid the phenomenon that occurs that wind deflector 610 is interferenceed with lower wind deflector 620, then, rotate with state synchronized in a certain angle between upper wind deflector 610 and lower wind deflector 620, to carry out upper and lower wind-guiding; For the wind deflector 600 shown in Fig. 7, upper wind deflector 610 is rotated counterclockwise around its pivot points 611, to open air outlet 400, and lower wind deflector 620 is relatively gone up after wind deflector 610 postpones a period of time and is rotated counterclockwise around its pivot points 621, thus avoid the phenomenon that occurs that wind deflector 610 is interferenceed with lower wind deflector 620, then, rotate with state synchronized in a certain angle between upper wind deflector 610 and lower wind deflector 620, to carry out upper and lower wind-guiding.
From schematic construction in figure, upper wind deflector 610 and lower wind deflector 620 are in the process of carrying out wind-guiding, upper wind deflector 610 is near the upper side wall 410 of air outlet 400, lower wind deflector 620 is near the lower wall 420 of air outlet 400, and upper wind deflector 610 and lower wind deflector 620 are around respective pivot joint axis oscillating, the wind deflector 600 of this version has many-sided advantage compared to wall-hanging indoor unit of air conditioner air outlet structure of the prior art, such as, on the one hand, wind deflector 600 compact conformation be made up of upper wind deflector 610 and the lower wind deflector 620 of independent operating, in the process of carrying out upper and lower wind-guiding, its space taking air outlet 400 inside is little, larger activity space has been reserved to wind blade 500, therefore by increasing the size of wind blade 500, to improve left and right wind effect, on the other hand, when upper wind deflector 610 and lower wind deflector 620 launch wind-guiding, upper wind deflector 610 and lower wind deflector 620 extend out to outside air outlet 400 in most of structure of width, therefore by increasing the width of upper wind deflector 610 and lower wind deflector 620 to improve the wind-guiding ability of wind deflector 600, and the pendulum angle scope of upper wind deflector 610 and lower wind deflector 620 is larger, air-supply is pointed to accurately, improves upper and lower wind effect, moreover, in the process of carrying out upper and lower wind-guiding, the upper side wall 410 of air outlet 400 pressed close to by upper wind deflector 610, and the lower wall 420 of air outlet 400 pressed close to by lower wind deflector 620, therefore can reduce the wind loss of air outlet 400 edge, more effectively realize upper and lower Wide blowing angle.In sum, technical scheme of the present invention overcomes wall-hanging indoor unit of air conditioner air outlet structure of the prior art and sweeps demeanour and enclose little technical problem, reach expansion blowing range, make room temperature more even, and improve the object of air-conditioner comfort.
It is worth mentioning that, if wall-hanging indoor unit of air conditioner is in refrigeration operational state, then go up wind deflector 610 and lower wind deflector 620 rotates to position shown in Fig. 3, the wind-guiding face of now going up wind deflector 610 and lower wind deflector 620 all levels off to horizontal level, to be sent toward horizontal direction by cold wind, thus improve refrigeration; If when wall-hanging indoor unit of air conditioner is in heating operation state, then go up wind deflector 610 and lower wind deflector 620 rotates to position shown in Fig. 4, the wind-guiding face of now going up wind deflector 610 and lower wind deflector 620 all levels off to vertical position, down to be sent by hot blast, thus improves heating effect; If wall-hanging indoor unit of air conditioner is in air-supply running status, then go up wind deflector 610 and lower wind deflector 620 rotates to position shown in Fig. 5, the upper side wall 410 now going up the wind-guiding face of wind deflector 610 and air outlet 400 is almost parallel, the wind-guiding face of lower wind deflector 620 and the lower wall 420 of air outlet 400 almost parallel, thus reduce crushing and wind loss, air-supply better effects if.Therefore, multiple angles combination can be realized between upper wind deflector 610 and lower wind deflector 620, select targetedly according to air-supply type, thus improve wind effect, to improve the comfort level of user's using air-condition device.
In the present embodiment, upper wind deflector 610 around the first axle of wind deflector holder pivots, and lower wind deflector 620 around the second axis of wind deflector holder pivots all between upper wind deflector 610 and lower wind deflector 620.Preferably, upper wind deflector 610 is arranged near first axle, lower wind deflector 620 is arranged near the second axis, in the process of carrying out upper and lower wind-guiding, the radius of a circle of the movement locus that upper wind deflector 610 and lower wind deflector 620 are formed in air outlet 400 inside is all less, therefore when wind deflector 600 is movable, requisite space is compared existing wind deflector and is greatly reduced, structure is compacter, when air outlet 400 interior accommodating space is certain, the requirement of the wind-guiding area increasing wind blade 500 and wind deflector 600 can be met simultaneously, about strengthening wall-hanging indoor unit of air conditioner, to blow up and down effect, there is wind-guiding apart from farther, sweep the advantages such as wind angle is larger.
In the preferred embodiment, upper wind deflector 610 comprises the first outer end outside the first inner and close air outlet 400 inside air outlet 400, and the first inner distance to first axle is less than the distance of the first outer end to first axle; Similarly, lower wind deflector 620 comprises the second outer end outside the second inner and close air outlet 400 inside air outlet 400, and second the inner is less than the distance of the second outer end to the second axis to the distance of the second axis.Also be, with first axle and the second axis for segmentation benchmark, upper wind deflector 610 and lower wind deflector 620 are all divided into two parts of Length discrepancy on respective width, it is less that the upper wind deflector 610 of obvious this arrangement form and lower wind deflector 620 take air outlet 400 inner space, improves the utilization rate of air outlet 400 inner space.
According to the air outlet structure of wall-hanging indoor unit of air conditioner of the present invention, the concrete enforcement structure of upper wind deflector 610 and lower wind deflector 620 has multiple, thus adapts to the air outlet structure of the wall-hanging indoor unit of air conditioner of plurality of specifications.
Fig. 2 shows the first embodiment of wind deflector 610 and lower wind deflector 620, in the present embodiment, the width of upper wind deflector 610 equals the width of lower wind deflector 620, wind deflector 620 is wherein played to cover air outlet 400 when closed, and upper wind deflector 610 is covered in air outlet 400 by lower wind deflector 620, in rounding state between upper wind deflector 610 and lower wind deflector 620, therefore the structure of wind deflector 600 is compacter, and the inner space taking air outlet 400 when closed is also less.In addition, the outer surface of lower wind deflector 620 is curved, and this lower wind deflector 620 is when closed, the outer surface of lower wind deflector 620 and the front panel (not shown) of indoor set body seamlessly transit, thus can not affect the overall uniformity of wall-hanging indoor unit of air conditioner outward appearance and attractive in appearance.
Fig. 6 shows the second embodiment of wind deflector 610 and lower wind deflector 620, in the present embodiment, the width of upper wind deflector 610 is less than the width of lower wind deflector 620, same as above, lower wind deflector 620 covers air outlet 400 when closed, and upper wind deflector 610 is covered in air outlet 400 by lower wind deflector 620, relative to the first embodiment of upper wind deflector 610 and lower wind deflector 620, when wind deflector 600 is in closure state, the upper wind deflector 610 of the present embodiment is covered in air outlet 400 by lower wind deflector 620 completely, that is, lower wind deflector 620 is only had to manifest from air outlet 400, therefore the wall-hanging indoor unit of air conditioner of the present embodiment is more attractive in appearance, and air outlet 400 is formed and effectively covers, prevent dust from entering.
Fig. 7 shows the third embodiment of wind deflector 610 and lower wind deflector 620, in the present embodiment, the width of upper wind deflector 610 is greater than the width of lower wind deflector 620, therefore when wind deflector 600 closes, by upper wind deflector 610, air outlet 400 is covered, and lower wind deflector 620 is covered in air outlet 400 by upper wind deflector 610 completely, preferably, the outer surface of upper wind deflector 620 is curved, and upper wind deflector 610 is when closed, the outer surface of upper wind deflector 610 and the front panel (not shown) of indoor set body seamlessly transit, thus to the overall uniformity of wall-hanging indoor unit of air conditioner outward appearance and attractive in appearancely can not to impact.It is worth mentioning that, the width of upper wind deflector 620 arranges can reach better heating effect more greatly, because upper wind deflector 620 is positioned at the upside of air outlet 400, therefore can by the hot blast blown out from air outlet 400 toward pressing down, air-supply is pointed to accurately, greatly reduce the air quantity leaked from the upper edge of air outlet 400, thus decrease the hot-air be gathered in above wall-hanging indoor unit of air conditioner.Thus, the wall-hanging indoor unit of air conditioner of the present embodiment is more applicable for the environment for use that the time of heating is greater than cooling time.
In addition, also it should be noted that, on the basis of above-described embodiment, the wind-guiding face of upper wind deflector 610 and lower wind deflector 620 can be plane, also can be arcwall face, for the wind-guiding face adopting arcwall face design, can finely tune air supply direction, expand blowing range, to meet the requirement of environment for use.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a wall-hanging indoor unit of air conditioner, comprise indoor set body, be positioned at the air outlet of described indoor set body lower part, be positioned at the louver assembly of described air outlet, wind deflector support and the wind deflector with the pivot joint of described wind deflector support, described louver assembly is positioned at the inner side of described wind deflector, it is characterized in that, described wind deflector comprises the upper wind deflector of independent swing and lower wind deflector, described upper wind deflector is arranged near the upper side wall of described air outlet, described lower wind deflector is arranged near the lower wall of described air outlet, when described wind deflector closes, described air outlet covers by one of described upper wind deflector and described lower wind deflector.
2. wall-hanging indoor unit of air conditioner as claimed in claim 1, it is characterized in that, described upper wind deflector around the first axle of described wind deflector holder pivots, and described lower wind deflector around the second axis of described wind deflector holder pivots all on described between wind deflector and described lower wind deflector.
3. wall-hanging indoor unit of air conditioner as claimed in claim 2, it is characterized in that, described upper wind deflector comprises the first outer end outside the first inner and close described air outlet inside described air outlet, and the described first inner distance to described first axle is less than the distance of described first outer end to described first axle; Described lower wind deflector comprises the second outer end outside the second inner and close described air outlet inside described air outlet, and the described second inner distance to described second axis is less than the distance of described second outer end to described second axis.
4. the wall-hanging indoor unit of air conditioner as described in claim 1,2 or 3, is characterized in that, the width of described upper wind deflector is less than or equal to the width of described lower wind deflector.
5. wall-hanging indoor unit of air conditioner as claimed in claim 4, it is characterized in that, described lower wind deflector covers described air outlet when closed, and described upper wind deflector is covered in described air outlet by described lower wind deflector.
6. wall-hanging indoor unit of air conditioner as claimed in claim 4, it is characterized in that, the outer surface of described lower wind deflector is curved, and described lower wind deflector is when closed, and the outer surface of described lower wind deflector and the front panel of described indoor set body seamlessly transit.
7. the wall-hanging indoor unit of air conditioner as described in claim 1,2 or 3, is characterized in that, the width of described upper wind deflector is greater than the width of described lower wind deflector.
8. wall-hanging indoor unit of air conditioner as claimed in claim 7, it is characterized in that, described upper wind deflector covers described air outlet when closed, and described lower wind deflector is covered in described air outlet by described upper wind deflector.
9. wall-hanging indoor unit of air conditioner as claimed in claim 7, it is characterized in that, the outer surface of described upper wind deflector is curved, and described upper wind deflector is when closed, and the outer surface of described upper wind deflector and the front panel of described indoor set body seamlessly transit.
10. wall-hanging indoor unit of air conditioner as claimed in claim 1, it is characterized in that, described louver assembly comprises connecting rod and some wind blades arranged along horizontal axis, described wind blade is arcs of recesses towards the end face of the air side of described air outlet, described connecting rod is arranged at intervals with some first articulated sections, the bottom of described wind blade is provided with the second articulated section and the 3rd articulated section, the first articulated section one_to_one corresponding pivot joint on second articulated section of wind blade described in each and described connecting rod, 3rd articulated section of wind blade described in each is articulated in the lower wall of described air outlet.
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| CN105805840A (en) * | 2016-05-27 | 2016-07-27 | 珠海格力电器股份有限公司 | Indoor unit and air conditioner |
| CN105953311A (en) * | 2016-06-20 | 2016-09-21 | 珠海格力电器股份有限公司 | Air conditioner indoor unit and air deflector assembly thereof |
| CN106287963A (en) * | 2016-08-23 | 2017-01-04 | 美的集团武汉制冷设备有限公司 | Air-conditioner and air supply method thereof |
| CN106871410A (en) * | 2017-03-31 | 2017-06-20 | 美的集团武汉制冷设备有限公司 | Wind deflector drive mechanism and air-conditioner |
| CN106895548A (en) * | 2017-01-18 | 2017-06-27 | 广东美的制冷设备有限公司 | A kind of control method of indoor apparatus of air conditioner wind guide strip anti-interference |
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| CN111981571A (en) * | 2020-08-13 | 2020-11-24 | Tcl空调器(中山)有限公司 | Wall-mounted air conditioner indoor unit, air conditioner and air supply method of air conditioner |
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