CN114501939A - Electric appliance heat radiation structure of air conditioner and air conditioner - Google Patents
Electric appliance heat radiation structure of air conditioner and air conditioner Download PDFInfo
- Publication number
- CN114501939A CN114501939A CN202210074654.3A CN202210074654A CN114501939A CN 114501939 A CN114501939 A CN 114501939A CN 202210074654 A CN202210074654 A CN 202210074654A CN 114501939 A CN114501939 A CN 114501939A
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- Prior art keywords
- air conditioner
- air
- heat dissipation
- electric appliance
- dissipation structure
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- 230000005855 radiation Effects 0.000 title claims description 3
- 230000017525 heat dissipation Effects 0.000 claims abstract description 67
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 19
- 238000009434 installation Methods 0.000 abstract description 11
- 239000003507 refrigerant Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 abstract description 4
- 239000003570 air Substances 0.000 description 110
- 239000000498 cooling water Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 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
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
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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
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
-
- 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
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
-
- 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
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20509—Multiple-component heat spreaders; Multi-component heat-conducting support plates; Multi-component non-closed heat-conducting structures
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides an electric appliance heat dissipation structure of an air conditioner and the air conditioner, wherein the electric appliance heat dissipation structure of the air conditioner comprises an evaporator, a fan and an electric cabinet, the electric cabinet is arranged in the middle or at the bottom of the air conditioner, the top of the electric cabinet is provided with a heat dissipation structure, and the heat dissipation structure is positioned on the air return side of the evaporator. According to the electric appliance heat dissipation structure of the air conditioner and the air conditioner, the heat dissipation structure which is arranged at the top of the electric control box at the middle part or the lower part of the vertical variable frequency air conditioner and is positioned at the air return side of the evaporator is matched with the air return air of the air conditioner to dissipate heat of the frequency converter, so that the problems that a heat dissipation structure is complex, the installation space is occupied, the heat exchange quantity of a unit is lost, condensation is easy to occur and the like caused by independently arranging a heat dissipation fan or introducing a water cooling pipeline and a refrigerant pipeline to dissipate heat of the frequency converter are solved.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to an electric appliance heat dissipation structure of an air conditioner suitable for a vertical variable frequency air conditioner and the air conditioner using the same.
Background
Currently, the variable frequency air conditioner has gradually replaced the fixed frequency air conditioner, and becomes the mainstream product in the air conditioner market. However, in the existing large-scale inverter air conditioner, especially the vertical inverter air conditioner, the cooling and heat dissipation of the inverter are still the key points and difficulties affecting whether the inverter can work reliably, and if the cooling and heat dissipation effect of the inverter is not good, the inverter can be burnt out due to the fact that effective cooling and heat dissipation cannot be achieved, and potential safety hazards and economic losses are caused.
At present, for cooling and radiating of a frequency converter of a variable frequency air conditioner, common cooling and radiating structures provided on the market comprise air cooling, water cooling and refrigerant cooling, and the three types of radiating structures respectively have the following defects:
1. for the air-cooled heat dissipation structure: a cooling fan needs to be independently added for cooling, so that the heat dissipation structure has more parts and large occupied installation space; part of variable frequency air conditioner products adopt cold air generated at the air outlet side of a heat exchanger for heat dissipation, are easy to condense and cause electrical short circuit, and lose heat exchange quantity of a unit, so that the air outlet temperature is uncontrollable;
2. for the water-cooling heat dissipation structure: cooling water needs to be effectively sealed, and a cooling water pipe needs to be independently introduced, so that the heat dissipation structure is complex, and once the cooling water is leaked, electrical short circuit is easily caused and a frequency converter is burnt;
3. for the refrigerant cooling structure: a refrigerant conveying pipeline is required to be introduced to cool the frequency converter, the problems that a radiating structure is complex, the temperature is uncontrollable due to loss of heat exchange quantity of a unit and electrical short circuit is caused due to easy condensation are caused, and the problem that the frequency converter cannot adapt to flexible and changeable working conditions due to the limitation of refrigerant cooling.
Disclosure of Invention
In order to solve the technical problems that the heat dissipation structure of the traditional inverter air conditioner in the prior art is complex, occupies installation space, loses heat exchange amount of a unit and is easy to condense to cause electrical short circuit, the invention provides an electric appliance heat dissipation structure of an air conditioner particularly suitable for a vertical inverter air conditioner and the air conditioner using the same.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides an electric appliance heat dissipation structure of an air conditioner, which comprises an evaporator, a fan and an electric cabinet,
the electric cabinet is arranged at the middle part or the bottom part of the air conditioner, the top part of the electric cabinet is provided with a heat dissipation structure, and the heat dissipation structure is positioned at the air return side of the evaporator.
Further, the heat dissipation structure includes:
the electric cabinet comprises an installation plate which is arranged on the top of the electric cabinet and seals the electric cabinet, a radiator which is arranged on the top of the installation plate, and at least one electric appliance which is arranged on the bottom of the installation plate.
Further, the heat sink includes:
the heat dissipation base is arranged on the mounting plate, and a plurality of heat dissipation fins are arranged on the top of the base at intervals in an upward mode.
Preferably, the fins are arranged in the same direction as the return air flow of the evaporator.
Further, still include:
and the electric appliance is arranged at the bottom of the heat dissipation structure and supported at the top of the bracket.
Further, the bracket includes:
the support plate is horizontally arranged, the pair of installation side plates are respectively and correspondingly arranged at two ends of the support plate, the pair of installation side plates are respectively installed on corresponding inner side walls of the electric cabinet, and the bracket and the installation plate clamp the frequency converter between the bracket and the installation plate.
Preferably, the height of the heat dissipating ribs is 30-50 mm.
The invention also provides an air conditioner, which comprises an air outlet arranged at the upper part of the air conditioner, a fan arranged at the middle part of the air conditioner, an evaporator and a return air inlet arranged at the lower part of the air conditioner, an electric cabinet arranged between the evaporator and the return air inlet and arranged at the return air side of an evaporation cavity of the evaporator, and an electric appliance heat dissipation structure of the air conditioner.
Preferably, the air conditioner is a variable frequency air conditioner, and the electrical appliance is a variable frequency.
Further, the return air inlet includes: the air return panel is arranged on the side wall of the unit shell of the air conditioner, and the plurality of shutters are distributed on the air return panel at intervals; the heat dissipation structure extends towards the direction close to the return air panel.
Compared with the prior art, the heat dissipation structure of the electric appliance of the air conditioner and the air conditioner provided by the invention have the advantages that the heat dissipation structure which is arranged at the top of the electric control box at the middle part or the lower part of the vertical variable frequency air conditioner and is positioned at the air return side of the evaporator is matched with the air return air of the air conditioner to dissipate heat of the frequency converter, and the problems of complex heat dissipation structure, occupied installation space, unit heat exchange loss, easy condensation and the like caused by independently arranging a heat dissipation fan or introducing a water cooling pipeline and a refrigerant pipeline to dissipate heat of the frequency converter are solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic view of an overall structure of an air conditioner according to the present invention;
FIG. 2 is a schematic view of an assembly structure of the heat dissipating structure of the air conditioner according to the present invention;
FIG. 3 is an exploded view of the heat dissipating structure of the air conditioner;
fig. 4 is a schematic view showing the arrangement direction of the heat dissipation fins of the heat dissipation structure of the air conditioner and the return air flow direction of the evaporator according to the present invention.
Wherein, in the drawings, the reference numerals are mainly as follows:
1-an air conditioner; 11-a unit housing; 2-an evaporator; 3, an electric cabinet; 4-a heat dissipation structure; 41-mounting plate; 42-a heat sink; 421-a heat dissipation base; 422-radiating ribs; 5-a bracket; 51-a pallet; 52-mounting side plates; 6-air outlet; 7-air return inlet; 71-return air panel; 711-blinds; 8-frequency converter.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following will explain the principle and structure of the present invention in detail with reference to fig. 1-4 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides an electrical appliance heat dissipation structure 4 of an air conditioner 1, wherein the air conditioner 1 is preferably a vertical or cabinet air conditioner 1, and comprises a unit housing 11, an evaporator 2, a fan (not shown in the figure) and an electric cabinet 3, which are arranged in the unit housing 11; in this embodiment, the electric cabinet 3 is arranged in the middle or at the bottom of the unit housing 11 of the air conditioner 1, the heat dissipation structure 4 is arranged outside the top of the electric cabinet 3, and the heat dissipation structure 4 is positioned on the air return side of the evaporation cavity of the evaporator 2.
Referring to fig. 1-4, in the present embodiment, the heat dissipation structure 4 includes: the mounting plate is arranged on the top of the electric cabinet 3 and used for sealing the electric cabinet 3, is made of copper or aluminum or other heat-conducting metals and alloy materials, and is used as a top plate of the electric cabinet 3; the heat radiator 42 is arranged on the top of the mounting plate, at least one electric appliance is arranged on the bottom of the mounting plate through the reverse buckling of the circuit board of the electric appliance, heat emitted when the power consumption device of the electric appliance works is transmitted to the heat radiator 42 through the contact of the circuit board of the electric appliance and the mounting plate, and the heat radiator 42 radiates heat to the external environment. In the present embodiment, the radiator 42 is an air-cooled radiator 42, and the radiator 42 includes: a heat dissipation base 421 mounted on the mounting board, wherein the heat dissipation base 421 is made of copper or aluminum or other heat conductive metals and alloy materials; a plurality of heat dissipation fins 422 spaced upward from the top of the base; referring to fig. 4, as a preferred embodiment, the arrangement direction of the heat dissipation ribs 422 is the same as the return air flow direction of the evaporator 2, so as to maximize the heat dissipation efficiency per unit area of the heat dissipation ribs 422; as another embodiment, the heat dissipating ribs 422 may be replaced with heat dissipating fins.
Because the radiator 42 of the heat dissipation structure 4 is positioned at the outer side of the top of the electric cabinet 3 and is arranged at the air return side of the evaporation cavity of the evaporator 2, the electric cabinet 3 does not need to be additionally provided with a fan or a cooling water pipe or a refrigerant pipeline for air cooling or water cooling, and the environmental air in a machine room can be fully utilized for heat dissipation; meanwhile, the return air has a certain flow rate, so that the problem that heat cannot be dissipated due to heat accumulation caused by heat dissipation dead zones is solved; the return air temperature is usually the environmental temperature set by the machine room, and the temperature is stable and is not easy to cause condensation; the temperature of the machine room is generally set to be about 27 ℃, so that the temperature of the frequency converter 8 can be stably controlled to be about 30 ℃ of optimal working temperature, and the service life and the reliability of devices can be greatly improved. As a preferred embodiment, the fins 422 have a height of 30-50 mm to ensure adequate heat dissipation.
In this embodiment, the method further includes: and the electric appliance is arranged at the bottom of the heat dissipation structure 4 and supported on the bracket 5. As a preferred embodiment, the bracket 5 comprises: the air conditioning unit comprises a horizontally arranged supporting plate, a pair of mounting side plates 52 which are respectively and correspondingly arranged at two ends of the supporting plate, wherein the pair of mounting side plates 52 are respectively mounted on corresponding inner side walls of the electric cabinet 3, the bracket 5 and the mounting plate clamp an electric appliance between the electric appliance and the supporting plate, and the electric appliance is fastened at the bottom of the mounting plate through screws, so that the problem that the electric appliance is loosened from the heat dissipation structure 4 to cause poor heat dissipation due to long-term vibration, thermal aging and other factors under severe working conditions is avoided, and the air conditioning unit can be suitable for severe working conditions such as high-vibration, high-impact and high-swing marine environments.
Referring to fig. 1, the present invention further provides an air conditioner 1, wherein the indoor unit of the air conditioner 1 is a vertical or cabinet type air conditioner 1, and the air conditioner 1 comprises an air outlet 6 arranged at the upper part in a unit shell 11 of the indoor unit of the air conditioner 1, a fan arranged at the middle part of the air conditioner 1, an evaporator 2 and an air return opening 7 arranged at the lower part of the air conditioner 1, an electric cabinet 3 arranged at the air return side, and an electric appliance heat dissipation structure 4 of the air conditioner 1, wherein the air return side of an evaporation cavity of the evaporator 2 is arranged between the evaporator 2 and the air return opening 7. As a preferred embodiment, the air conditioner 1 adopts a frequency conversion air conditioner 1, the external machine of the air conditioner 1 adopts water cooling heat dissipation, the electric cabinet 3 of the internal machine adopts the electric appliance heat dissipation structure 4 of the air conditioner 1 to carry out air cooling heat dissipation, the electric appliance adopts a frequency converter 8 and comprises a frequency conversion plate arranged at the bottom of the mounting plate and a frequency converter 8 which is arranged on the frequency conversion plate in an inverted way, the top of the frequency converter 8 is supported on the top of a bracket 5 in an inverted way, and the bracket 5 and the mounting plate clamp the frequency converter 8 between the two. When the electric cabinet 3 door is closed, the frequency converter 8 is located in the closed space inside the electric cabinet 3, so that the electromagnetic compatibility and the anti-electromagnetic interference performance of the frequency converter set are improved.
As a preferred embodiment, the return air opening 7 includes: the return air panel 71 is provided on a side wall of the unit casing 11 of the air conditioner 1, and a plurality of louvers 711 are provided at intervals on the return air panel 71. In a preferred embodiment, the heat dissipating base 421 of the heat dissipating structure 4 and the heat dissipating fins 422 on the top thereof extend in a direction close to the return air panel 71, i.e., the heat dissipating area can be increased according to the heat generated by the frequency converter 8, and the width thereof can extend to a position close to the return air panel 71.
The air conditioner 1 provided by the invention can be installed in rooms with large spaces such as meeting rooms, horizontal rooms, dining rooms, kitchens and machine rooms, ambient air in the rooms enters the unit shell 11 from the louver 711 of the air return panel 71, is cooled through heat exchange of the evaporator 2, and is sent out from the air outlet 6 by the fan to cool the rooms.
In this embodiment, the air outlet side of the evaporation cavity of the evaporator 2 is communicated with one end of the vertical air outlet channel, the fan is located in the air outlet channel, and the other end of the air outlet channel is communicated with the air outlet 6, so as to form an air conditioner 1 external environment, namely, a unit lower air return opening 7, an air return side (a unit lower electric cabinet 3 and a heat dissipation structure 4 thereof), an evaporator 2, an air outlet side, an air outlet channel (a unit middle fan), an air conditioner unit air outlet 6 of the unit upper air outlet, and air outlet and air return circulation, and the heat of the frequency converter 8 is taken away through the gap of the heat dissipation fins 422 through the return air flow.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an electrical apparatus heat radiation structure of air conditioner, includes evaporimeter, fan, electric cabinet, its characterized in that:
the electric cabinet is arranged in the middle or at the bottom of the air conditioner, and a heat dissipation structure is arranged at the top of the electric cabinet and is positioned on the air return side of the evaporator.
2. The electric appliance heat dissipation structure of an air conditioner as set forth in claim 1, wherein the heat dissipation structure comprises:
the electric cabinet comprises an electric cabinet, a mounting plate, a radiator and at least one electric appliance, wherein the mounting plate is mounted at the top of the electric cabinet and used for sealing the electric cabinet, the radiator is mounted at the top of the mounting plate, and the at least one electric appliance is mounted at the bottom of the mounting plate.
3. The electric appliance heat dissipating structure of an air conditioner as set forth in claim 2, wherein the heat sink comprises:
and the heat dissipation base is arranged on the mounting plate, and a plurality of heat dissipation fins are upwards arranged at the top of the base at intervals.
4. The air conditioner appliance heat dissipating structure as set forth in claim 3, wherein said heat dissipating ribs are arranged in the same direction as the return air flow of said evaporator.
5. The electric appliance heat dissipating structure of an air conditioner as set forth in claim 4, further comprising:
and the electric appliance is arranged at the bottom of the heat dissipation structure and supported on the bracket.
6. The electric appliance heat dissipating structure of an air conditioner as set forth in claim 5, wherein the bracket comprises:
the bracket comprises a horizontally arranged supporting plate and a pair of mounting side plates which are respectively and correspondingly arranged at two ends of the supporting plate, the pair of mounting side plates are respectively mounted on corresponding inner side walls of the electric cabinet, and the bracket and the mounting plates clamp the frequency converter between the bracket and the mounting plates.
7. The heat dissipating structure of an electric appliance of an air conditioner as claimed in claim 3, wherein the height of the heat dissipating ribs is 30 to 50 mm.
8. An air conditioner, characterized by comprising an air outlet arranged at the upper part of the air conditioner, a fan arranged at the middle part of the air conditioner, an evaporator and a return air inlet arranged at the lower part of the air conditioner, wherein the return air side of an evaporation cavity of the evaporator is arranged between the evaporator and the return air inlet, and an electric cabinet arranged at the return air side, and further comprising the electric appliance heat dissipation structure of the air conditioner as claimed in any one of claims 1 to 7.
9. The air conditioner according to claim 8, wherein the air conditioner is an inverter air conditioner, and the electric appliance is an inverter.
10. The air conditioner as claimed in claim 9, wherein the air return opening comprises: the air return panel is arranged on the side wall of the unit shell of the air conditioner, and the plurality of shutters are distributed on the air return panel at intervals; the heat dissipation structure extends towards the direction close to the air return panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210074654.3A CN114501939A (en) | 2022-01-21 | 2022-01-21 | Electric appliance heat radiation structure of air conditioner and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210074654.3A CN114501939A (en) | 2022-01-21 | 2022-01-21 | Electric appliance heat radiation structure of air conditioner and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN114501939A true CN114501939A (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210074654.3A Pending CN114501939A (en) | 2022-01-21 | 2022-01-21 | Electric appliance heat radiation structure of air conditioner and air conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN114501939A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111836520A (en) * | 2020-07-15 | 2020-10-27 | 珠海格力电器股份有限公司 | Submerged air conditioner electrical apparatus box heat radiation structure and interior external machine integral type air conditioner |
| CN112050295A (en) * | 2020-09-21 | 2020-12-08 | 青岛海信电子设备股份有限公司 | Indoor unit of air conditioner |
| CN112228989A (en) * | 2020-11-11 | 2021-01-15 | 珠海格力电器股份有限公司 | Air conditioning system of movable working cabin and movable working cabin |
| CN216960627U (en) * | 2022-01-21 | 2022-07-12 | 珠海格力电器股份有限公司 | Electric appliance heat radiation structure of air conditioner and air conditioner |
-
2022
- 2022-01-21 CN CN202210074654.3A patent/CN114501939A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111836520A (en) * | 2020-07-15 | 2020-10-27 | 珠海格力电器股份有限公司 | Submerged air conditioner electrical apparatus box heat radiation structure and interior external machine integral type air conditioner |
| CN112050295A (en) * | 2020-09-21 | 2020-12-08 | 青岛海信电子设备股份有限公司 | Indoor unit of air conditioner |
| CN112228989A (en) * | 2020-11-11 | 2021-01-15 | 珠海格力电器股份有限公司 | Air conditioning system of movable working cabin and movable working cabin |
| CN216960627U (en) * | 2022-01-21 | 2022-07-12 | 珠海格力电器股份有限公司 | Electric appliance heat radiation structure of air conditioner and air conditioner |
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