CN109413963A - Storing apparatus and air-conditioning equipped with it - Google Patents
Storing apparatus and air-conditioning equipped with it Download PDFInfo
- Publication number
- CN109413963A CN109413963A CN201811522826.9A CN201811522826A CN109413963A CN 109413963 A CN109413963 A CN 109413963A CN 201811522826 A CN201811522826 A CN 201811522826A CN 109413963 A CN109413963 A CN 109413963A
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- China
- Prior art keywords
- cooling
- section
- chamber
- storing apparatus
- accommodating chamber
- 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.)
- Pending
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 170
- 239000007788 liquid Substances 0.000 claims description 40
- 230000004907 flux Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 239000003507 refrigerant Substances 0.000 description 15
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20327—Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present invention relates to a kind of storing apparatus and equipped with its air-conditioning, storing apparatus includes: the accommodating chamber with cooling wall, forms the cooling chamber for being located at accommodating chamber side in cooling wall；Cooling structure is at least partially housed in cooling chamber；Wherein, cooling structure can carry out heat exchange with accommodating chamber.Above-mentioned storing apparatus, the cooling wall that inside is equipped with cooling structure can carry out heat exchange with accommodating chamber to cool down to accommodating chamber.Since cooling structure is directly arranged at the inside of cooling wall, therefore cooling structure and accommodating chamber have biggish contact area and shorter heat transfer distance, cooling structure has good cooling effect to accommodating chamber, the heat in accommodating chamber can be made effectively to distribute, making the electrical component in accommodating chamber, normal table works in a long time, extends the service life of electrical component.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly to a kind of storing apparatus and equipped with its air-conditioning.
Background technique
In air conditioner industry, electric member is influenced whether for accommodating the temperature height of the interior of electrical box of electrical component in air-conditioning
The longtime running of device, especially when the temperature is excessively high by for influence electrical component service life, therefore electrical appliance kit needs have
Higher heat dissipation performance.But at the same time, electrical appliance kit also needs to reach higher seal request, to prevent the objects such as extraneous liquid
Matter invasion.And since thermal diffusivity and leakproofness are the characteristic of two opposition under normal conditions, the electrical appliance kit with excellent radiating effect
It is generally necessary to therefore, it is difficult to reach good leakproofness, and there is the electric appliance of good leakproofness with the abundant convection current of outside air
Box be then difficult to outside air convection current and be difficult to reach good thermal diffusivity, therefore be perplex the industry in a difficult point.
In air-conditioner set, the preferable solution of heat dissipation effect is refrigerant heat dissipation at present.Traditional refrigerant radiates due to it
Fault of construction, it is difficult to play maximum radiating efficiency, heat dissipation effect is poor.
Summary of the invention
Based on this, it is necessary to for the electrical appliance kit leakproofness and the poor problem of thermal diffusivity of air-conditioning, provide a kind of sealing
Property with the good electrical appliance kit of thermal diffusivity and the air-conditioning equipped with the electrical appliance kit.
A kind of storing apparatus, the storing apparatus include:
Accommodating chamber with cooling wall, the interior cooling chamber for forming the neighbouring accommodating chamber of the cooling wall；
Cooling structure is at least partially housed in the cooling chamber and carries out heat exchange with the accommodating chamber.
Above-mentioned storing apparatus, inside be equipped with cooling structure cooling wall can with accommodating chamber carry out heat exchange with to accommodating chamber into
Row cooling.Since cooling structure is directly arranged at the inside of cooling wall, cooling structure 40 has biggish connect with accommodating chamber
The long-pending and shorter heat transfer distance of contacting surface, cooling structure have good cooling effect to accommodating chamber 21, can make in accommodating chamber
Heat effectively distributes, and making the electrical component in accommodating chamber, normal table works in a long time, extends the use of electrical component
Service life.
The cooling structure includes cooling structure main body in one of the embodiments, and the cooling structure main body includes
Cooling section, liquid input section and liquid section out, the cooling section be located in the cooling chamber and with the liquid input section and it is described go out liquid section
Common connection forms cooling channel, and one end of the liquid input section is connect with the cooling section, and the other end stretches out outside the cooling wall；
One end of the liquid section out is connect with the cooling section, and the other end stretches out outside the cooling wall.
The cooling structure main body is in hollow tubular structure in one of the embodiments, and the cooling section is described
Bending extends in cooling chamber, and the liquid input section is connected to described cooling section one end, and it is remote that the liquid input section is connected to the cooling section
The other end from the liquid input section.
The cooling structure further includes control valve and/or temperature sensing unit, the control in one of the embodiments,
Valve processed and/or the temperature sensing unit are installed on the cooling structure main body, and the control valve is described cold for controlling
But the cold medium flux size in channel, the temperature sensing are used to detect the temperature of the cooling duct.
In one of the embodiments, the control valve and/or the temperature sensing unit be set to the liquid input section and/
Or the liquid section out.
In one of the embodiments, the liquid input section with it is described go out liquid Duan Jun be respectively equipped with the control valve with it is described
Temperature sensing unit, the temperature sensing unit are located at the control valve close to the cooling section side.
The cooling wall is provided with heat exchanging chamber backwards to the surface of the accommodating chamber in one of the embodiments, described to change
Hot chamber and the accommodating chamber are interconnected.
Run through on the cooling wall in one of the embodiments, and offers the connection accommodating chamber and the heat exchanging chamber
Connectivity slot.
The cooling wall is equipped with cooling fins far from one side surface of accommodating chamber in one of the embodiments, multiple
The cooling fins are alternatively arranged.
A kind of air-conditioning, including above-mentioned storing apparatus, the accommodating chamber of the storing apparatus is for accommodating electrical component.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the storing apparatus of one embodiment of the invention；
Fig. 2 be storing apparatus shown in FIG. 1 A-A to cross-sectional view；
Fig. 3 is the partial enlarged view at B shown in FIG. 1；
Fig. 4 is the explosive view of storing apparatus shown in FIG. 1；
Fig. 5 is the cooling wall of storing apparatus shown in FIG. 1 and the structural schematic diagram of cooling structure.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
As shown in Figures 1 and 2, a kind of air-conditioning of the invention, including the storing apparatus 100 for accommodating electrical component.Tool
Body, storing apparatus 100 includes main casing 20 and cooling structure 40, and main casing 20 is in hollow cube structure, and formation has
The accommodating chamber 21 of cooling wall 22, the interior formation of cooling wall 22 is neighbouring and independently of the cooling chamber of accommodating chamber 21, and cooling structure 40 is at least
It is partially housed in cooling chamber.
In this way, the internal cooling wall 22 for being equipped with cooling structure 40 and accommodating chamber 21 carry out heat exchange to carry out to accommodating chamber 21
Cooling.Since cooling structure 40 is directly arranged at the inside of cooling wall 22, cooling structure 40 has larger with accommodating chamber 21
Contact area and shorter heat transfer distance, cooling structure 40 has good cooling effect to accommodating chamber 21, can make to accommodate
Heat in chamber 21 effectively distributes, and making the electrical component in accommodating chamber 21, normal table works in a long time, extends electric member
The service life of device.
As shown in figure 4, specifically, main casing 20 include cooling wall 22, the first side wall 23, second sidewall 24, upper cover plate 25,
Lower cover plate 26 and main cover plate 27, cooling wall 22, the first side wall 23, second sidewall 24, upper cover plate 25, lower cover plate 26 and main cover
Accommodating chamber 21 is collectively formed to accommodate electrical component in plate 27.Wherein, cooling wall 22 and main cover plate 27 are in rectangle, between the two every simultaneously
It is arranged in parallel, and the outer profile of the outer profile and cooling wall 22 of orthographic projection of the cooling wall 22 on main cover plate 27 substantially overlaps.The
One side wall 23, second sidewall 24, upper cover plate 25 connect cooling wall 22 and main cover plate 27 with lower cover plate 26 and enclose set on cooling wall 22
With the periphery of main cover plate 27, wherein the first side wall 23 and second sidewall 24 are in rectangle, between the two every and be arranged in parallel, and first
The outer profile of orthographic projection of the side wall 23 in second sidewall 24 and the outer profile of second sidewall 24 substantially overlap；Upper cover plate 25 is under
Cover board 26 be in rectangle, between the two every and be arranged in parallel, and upper cover plate 25 the orthographic projection on lower cover plate 26 outer profile under
The outer profile of cover board 26 substantially overlaps.In this way, cooling wall 22, the first side wall 23, second sidewall 24, upper cover plate 25, lower cover plate 26
And hollow cube structure is collectively formed in main cover plate 27.It is appreciated that in other embodiments, the shape of main casing 20 is not
It is limited to this, can be set as needed as different shape.
In one embodiment, cooling wall 22, the first side wall 23, second sidewall 24, upper cover plate 25, lower cover plate 26 and main cover
At least one of plate 27 is additionally provided with cooling fins far from the side of accommodating chamber 21, and multiple cooling fins are alternatively arranged to increase heat dissipation
Area further increases the heat dissipation effect of storing apparatus 100.It is appreciated that the shape of cooling fins, quantity, arrangement mode are not
Limit, cooling fins can be arranged along different directions, can also be the different shapes such as waveform, aciculiform.In other embodiments, the first side
Wall 23 and second sidewall 24 can also be not provided with cooling fins, but be radiated by setting shutter.
Fig. 4 and Fig. 5 is please referred to, cooling structure 40 includes cooling structure main body 41, and cooling structure main body 41 is in hollow pipe
Shape structure, including cooling section 414, liquid input section 412 and liquid section 416 out.Wherein, cooling section 414 is located at the cooling of cooling wall 22
Intracavitary and be bent and extend in cooling chamber, one end of liquid input section 412 connect with 414 one end of cooling section, other end stretching cooling wall
22 is outer easily to connect other devices；One end of liquid section 416 is connect with cooling section 414 far from 412 one end of liquid input section out, another
It is outer easily to connect other devices that cooling wall 22 is stretched out at end.In this way, cooling section 414, liquid input section 412 and 416 phase of liquid section out
Intercommunicated formation cooling channel, refrigerant can flow in the cooling channel, to take away the heat in accommodating chamber 21.Since refrigerant is logical
Road is directly contained in the cooling wall 22 to form accommodating chamber 21, therefore there is no refrigerant pipes in the prior art and heat sink to paste
Closing between not tight or both has air layer.
It is appreciated that the bore shape of cooling structure main body 41 is unlimited, it can be the shapes such as round, rectangle or polygon.
As shown in figure 4, specifically in one embodiment, the bore shape of cooling structure main body 41 is circle.
It is appreciated that the shape that cooling section 414 is formed by bending can also be set as needed.As shown in figure 5, specifically one
In embodiment, cooling section 414 includes multiple straight line portions and bending section.Wherein, each straight line portion is flat with the short side of cooling wall 22
The length of row and straight line portion is slightly less than the length of short side, and multiple straight line portions are alternatively arranged along the length direction of cooling wall 22.Bending
Portion is semicircular arc, and the both ends of bending section connect the both ends of two adjacent straight line portions, to be formed along the length side of cooling wall 22
To sinuous cooling channel.Further, in the above-described embodiments, the distance between every group of two neighboring straight line portion is equal, and
Straight line portion forms the biggish heat exchange area of area uniformly throughout entire cooling wall 21.And in other embodiments, different positions
The distance between two neighboring straight line portion set can be different, and the density degree of straight line portion distribution can be according to the hair of electrical component
Heat carries out specific aim arrangement, the straight line portion more crypto set in the higher region of calorific value, and the straight line portion in the low region of calorific value
It is then more sparse, to make the higher region of calorific value that there is higher cooling velocity, be conducive to each position of accommodating chamber 21
Temperature uniformly decline, while having saved the usage amount of cooling structure main body 41 Yu refrigerant.
As shown in Figures 4 and 5, cooling structure 40 further includes control valve 43 and/or temperature sensing unit 45, control valve
43 and/or temperature sensing unit 45 be installed on cooling structure main body 41, control valve 43 is used to control the refrigerant stream of cooling duct
Size is measured, temperature sensing unit 45 is used to detect the temperature of cooling duct.In this way, control valve 43 can be according to the temperature of cooling duct
Degree adjustment cold medium flux size.
Specifically, when temperature sensing unit 45 detects the temperature of cooling duct below preset temperature, control valve 43
It is in close state, refrigerant present in cooling duct continues to exchange with the progress heat of accommodating chamber 21, until the temperature of cooling duct
Degree reaches preset temperature, and openable control valve 43 makes the refrigerant for completing to exchange heat outflow at this time, while introducing new refrigerant and continuing
Accommodating chamber 21 is cooled down.Moreover, control valve 43 can also change openings of sizes by the change rate of the temperature of cooling duct,
To change the flow of refrigerant.When the change rate of temperature is larger, the cold medium flux of cooling duct is larger, so that heat exchange can be improved
Efficiency.When the change rate of temperature is smaller, the cold medium flux of refrigerant passage is smaller, to make refrigerant that can be filled with accommodating chamber 21
Divide heat exchange, it is energy saving.
In one embodiment, since volumetric constraint, control valve 43 and/or temperature sensing unit 45 are set to liquid input section 412
And/or liquid section 416 out, and not in cooling section 414.Specifically in one embodiment, liquid input section 412 and liquid section 416 out are equal
It is respectively equipped with control valve 43 and temperature sensing unit 45, and temperature sensing unit 45 is located at control valve 43 close to cooling section
414 sides.In this way, the temperature of cooling duct can accurately be monitored according to the temperature of liquid input section 412 and liquid section 416 out, neatly adjust
Save cold medium flux.
As shown in Fig. 2, cooling wall 22 is provided with heat exchanging chamber 28, heat exchanging chamber 28 and accommodating chamber 21 backwards to the surface of accommodating chamber 21
It is interconnected.Separated in this way, heat exchanging chamber 28 is located at 22 two sides of cooling wall with accommodating chamber 21 with passing through cooling wall 22, heat exchanging chamber
28 can carry out air cycle heat radiation with accommodating chamber 21, further increase the radiating efficiency of accommodating chamber 21.Moreover, heat exchanging chamber 28 can also
To cooling wall 22 play protection, isolation, it is heat-insulated the effects of, avoid cooling wall 22 from directly contacting other external device (ED)s, it is cooling simultaneously
Wall 22 can also play cooling effect by heat exchanging chamber 28 simultaneously.
Specifically, the first side wall 23, second sidewall 24, upper cover plate 25 and 26 one end of lower cover plate stretch out cooling wall 22, main
Shell 20 further includes heat exchanging chamber backboard 28, and the periphery of heat exchanging chamber backboard 28 is connected to the first side wall 23, second sidewall 24, upper cover plate
25 and lower cover plate 26 stretch out 22 one end of cooling wall.In this way, heat exchanging chamber backboard 28, the first side wall 23, second sidewall 24, upper cover
Heat exchanging chamber 28 is collectively formed in plate 25, lower cover plate 26 and cooling wall 22.Short side edge of the cooling wall 22 close to 25 side of upper cover plate
Middle part through-thickness through connectivity slot 221 is offered, the length of connectivity slot 221 is less than the short side of cooling wall 22, connectivity slot
221 connection accommodating chambers 21 and heat exchanging chamber 28, to make heat exchanging chamber 28 and accommodating chamber 21 that can carry out air cycle heat radiation.It can manage
Solution, the position that connectivity slot 221 opens up is without being limited thereto, can also be opened in the other positions of cooling wall 22 as needed.
Above-mentioned storing apparatus 100 and the air-conditioning equipped with it, in setting accommodating chamber 21 and heat exchanging chamber 28 to form dual chamber two
On the basis of stage cooling structure, the cooling wall 22 by being equipped with cooling structure 40 carries out further accommodating chamber 21 and heat exchanging chamber 28
It is cooling, the heat that the electrical component in accommodating chamber 21 generates effectively has been taken away by the refrigerant flowing of large area, has not influenced to hold
It receives under the premise of the closure of device 100, effectively increases the heat dissipation performance of storing apparatus 100, avoid temperature in accommodating chamber 21
Service life that is excessively high and reducing electrical component.Moreover, the flow of the refrigerant in cooling duct can be according to the real-time of cooling duct
Temperature is flexible, accurately controls.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of storing apparatus (100), which is characterized in that the storing apparatus (100) includes:
Accommodating chamber (21) with cooling wall (22), the interior cooling for forming neighbouring the accommodating chamber (21) of the cooling wall (22)
Chamber；
Cooling structure (40) is at least partially housed in the cooling chamber and carries out heat exchange with the accommodating chamber (21).
2. storing apparatus (100) according to claim 1, which is characterized in that the cooling structure (40) includes cooling knot
Structure main body (41), the cooling structure main body (41) include cooling section (414), liquid input section (412) and liquid section (416) out, institute
Cooling section (414) are stated to be located in the cooling chamber and be connected to formation jointly with the liquid input section (412) and liquid section (416) out
One end of cooling channel, the liquid input section (412) is connect with the cooling section (414), and the other end stretches out the cooling wall (22)
Outside；The one end of liquid section (416) out is connect with the cooling section (414), and the other end stretches out the cooling wall (22) outside.
3. storing apparatus (100) according to claim 2, which is characterized in that the cooling structure main body (41) is in hollow
Tubular structure, the cooling section (414) is bent extension in the cooling chamber, and the liquid input section (412) is connected to described cold
But section (414) one end, the liquid input section (412) are connected to the cooling section (414) far from the another of the liquid input section (412)
End.
4. storing apparatus (100) according to claim 2, which is characterized in that the cooling structure (40) further includes control
Valve (43) and/or temperature sensing unit (45), the control valve (43) and/or the temperature sensing unit (45) are installed on
The cooling structure main body (41), the control valve (43) is used to control the cold medium flux size of the cooling duct, described
Temperature sensing unit (45) is used to detect the temperature of the cooling duct.
5. storing apparatus (100) according to claim 4, which is characterized in that the control valve (43) and/or the temperature
Spend sensing unit (45) be set to the liquid input section (412) and/or it is described go out liquid section (416).
6. storing apparatus (100) according to claim 5, which is characterized in that the liquid input section (412) and the liquid section out
(416) control valve (43) and the temperature sensing unit (45), temperature sensing unit (45) position are respectively equipped with
In the control valve (43) close to the cooling section (414) side.
7. storing apparatus (100) according to claim 1, which is characterized in that the cooling wall (22) is backwards to the receiving
The surface of chamber (21) is provided with heat exchanging chamber (28), and the heat exchanging chamber (28) and the accommodating chamber (21) are interconnected.
8. storing apparatus (100) according to claim 1, which is characterized in that run through on the cooling wall (22) and offer
It is connected to the connectivity slot (221) of the accommodating chamber (21) Yu the heat exchanging chamber (28).
9. storing apparatus (100) according to claim 1, which is characterized in that the cooling wall (22) is far from the receiving
(21) one side surface of chamber is equipped with cooling fins, and multiple cooling fins are alternatively arranged.
10. a kind of air-conditioning, which is characterized in that described including storing apparatus as described in any one of claims 1-9 (100)
The accommodating chamber (21) of storing apparatus (100) is for accommodating electrical component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522826.9A CN109413963A (en) | 2018-12-13 | 2018-12-13 | Storing apparatus and air-conditioning equipped with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522826.9A CN109413963A (en) | 2018-12-13 | 2018-12-13 | Storing apparatus and air-conditioning equipped with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109413963A true CN109413963A (en) | 2019-03-01 |
Family
ID=65458927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811522826.9A Pending CN109413963A (en) | 2018-12-13 | 2018-12-13 | Storing apparatus and air-conditioning equipped with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109413963A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072372A (en) * | 2019-05-28 | 2019-07-30 | 珠海格力电器股份有限公司 | Electrical appliance kit and air conditioner |
| CN111757649A (en) * | 2020-07-07 | 2020-10-09 | 珠海格力电器股份有限公司 | Frequency converter with double cooling modes and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072372A (en) * | 2019-05-28 | 2019-07-30 | 珠海格力电器股份有限公司 | Electrical appliance kit and air conditioner |
| CN111757649A (en) * | 2020-07-07 | 2020-10-09 | 珠海格力电器股份有限公司 | Frequency converter with double cooling modes and air conditioner |
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