CN112236017A - Electrical box heat dissipation structure, refrigerating unit and control method of refrigerating unit - Google Patents
Electrical box heat dissipation structure, refrigerating unit and control method of refrigerating unit Download PDFInfo
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- CN112236017A CN112236017A CN202011221078.8A CN202011221078A CN112236017A CN 112236017 A CN112236017 A CN 112236017A CN 202011221078 A CN202011221078 A CN 202011221078A CN 112236017 A CN112236017 A CN 112236017A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims description 24
- 238000005057 refrigeration Methods 0.000 claims description 18
- 230000008020 evaporation Effects 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
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
- H05K7/20136—Forced ventilation, e.g. by fans
-
- 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
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
-
- 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
-
- 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
- H05K7/20309—Evaporators
-
- 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
- H05K7/20318—Condensers
-
- 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
- H05K7/20354—Refrigerating circuit comprising a compressor
-
- 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
- H05K7/20381—Thermal management, e.g. evaporation control
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides an electric appliance box heat dissipation structure, a refrigerating unit and a control method of the refrigerating unit. The heat dissipation structure of the electrical box comprises a box body and a heat dissipation disk body, wherein at least part of the first side of the box body is a heat conduction plate, an electrical element is arranged in the box body, and the electrical element is connected with the heat conduction plate. The heat dissipation disk body is arranged on the first side outside the box body and connected with the heat conduction plate, and a heat dissipation air channel is formed between the heat dissipation disk body and the heat conduction plate. By applying the technical scheme of the invention, the electric elements are arranged in the box body, the heat-radiating air channel is formed outside the box body through the heat-conducting plate and the heat-radiating disk, the waterproof performance of the box body can be prevented from being damaged, and the heat-radiating air channel can be used for radiating by other wind power components, so that the stability of heat radiation of the electric appliance box is ensured.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an electric appliance box heat dissipation structure, a refrigerating unit and a control method of the refrigerating unit.
Background
In the new forms of energy refrigerator car transport refrigeration unit, the heat dissipation of automatically controlled box generally adopts traditional heat dissipation, and traditional heat dissipation mode generally realizes through installing extra cooling fan. The heat dissipation mode has the problems of high failure rate, poor waterproof performance and the like.
Disclosure of Invention
The embodiment of the invention provides an electric appliance box heat dissipation structure, a refrigerating unit and a control method of the refrigerating unit, and aims to solve the technical problem that a new energy refrigerator car in the prior art is poor in heat dissipation stability of an electric appliance box.
An embodiment of the present invention provides an electrical box heat dissipation structure, including: the box body, at least part of the first side of the box body is a heat conducting plate, and an electric element is arranged in the box body and connected with the heat conducting plate; the heat dissipation disk body is arranged on the first side outside the box body and connected with the heat conduction plate, and a heat dissipation air channel is formed between the heat dissipation disk body and the heat conduction plate.
In one embodiment, the heat-dissipating plate body is connected with the heat-conducting plate through heat-dissipating ribs.
In one embodiment, the heat sink ribs are formed on the heat sink tray body.
In one embodiment, the heat dissipation ribs extend along the airflow flowing direction of the heat dissipation air duct.
In one embodiment, the heat dissipation ribs are multiple, and the multiple heat dissipation ribs are arranged in parallel at intervals.
In one embodiment, the heat conducting plate is arranged on the first side of the box body in a covering mode, and the heat radiating disk body is arranged on the first side of the box body in a covering mode.
In one embodiment, the heat dissipation structure of the electrical box further comprises a negative pressure connection component, and the negative pressure connection component is arranged at the first end of the heat dissipation air duct.
In one embodiment, the heat dissipation structure of the electrical box further comprises a filter screen, and the filter screen is disposed at the second end of the heat dissipation air duct.
The invention also provides a refrigerating unit, which comprises an electrical box heat dissipation structure, wherein the electrical box heat dissipation structure is the electrical box heat dissipation structure, and the refrigerating unit comprises: the condensation fan or the evaporation fan is arranged on the air duct cavity, and the negative pressure connecting component is communicated with the air duct cavity.
In one embodiment, the refrigeration unit is a refrigeration unit for a new energy refrigerated vehicle.
The invention also provides a control method of the refrigerating unit, the control method is used for controlling the refrigerating unit, the refrigerating unit comprises a compressor and a drive plate for controlling the compressor, the electric element comprises the drive plate, and the control method comprises the following steps: detecting the real-time temperature t of the driving plate, and comparing the real-time temperature t with the set temperature t 1; if t is less than t1, controlling the condensing fan or the evaporating fan to continuously operate at the current rotating speed; and if t is more than or equal to t1, controlling the condensing fan or the evaporating fan to operate at a higher rotating speed.
In one embodiment, the control method further comprises: the real-time temperature t is also compared with a critical temperature t 2; if t is more than or equal to t1 and less than t2, controlling the condensing fan or the evaporating fan to increase the rotating speed to operate; if t is more than or equal to t2, the operation frequency of the compressor is reduced while the condensing fan or the evaporating fan is controlled to increase the rotating speed for operation.
In the above embodiment, the electrical element is arranged inside the box body, and the heat dissipation air channel is formed outside the box body through the heat conduction plate and the heat dissipation disc body, so that the waterproof performance of the box body can be prevented from being damaged, and the heat dissipation air channel can be used for dissipating heat by other wind power parts, thereby ensuring the stability of heat dissipation of the electrical box.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic cross-sectional structural view of an embodiment of a heat dissipation structure of an electrical box according to the present invention;
FIG. 2 is an exploded view of the heat dissipating structure of the electrical box of FIG. 1;
FIG. 3 is a schematic view in partial perspective of an embodiment of a refrigeration unit according to the present invention;
fig. 4 is a flow chart illustrating a control method of the refrigeration unit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Fig. 1 and 2 show an embodiment of a heat dissipating structure of an electrical box according to the present invention, which includes a box body 10 and a heat dissipating disc body 30, at least a portion of a first side of the box body 10 is a heat conductive plate 11, an electrical component 20 is disposed in the box body 10, and the electrical component 20 is connected to the heat conductive plate 11. The heat-dissipating disc 30 is disposed at a first side outside the case body 10, and the heat-dissipating disc 30 is connected to the heat-conducting plate 11, and a heat-dissipating air duct c is formed between the heat-dissipating disc 30 and the heat-conducting plate 11.
By applying the technical scheme of the invention, the electric element 20 is arranged in the box body 10, and the heat-radiating air duct c is formed outside the box body 10 through the heat-conducting plate 11 and the heat-radiating disc body 30, so that the waterproof performance of the box body 10 can be prevented from being damaged, and the heat-radiating air duct c can be used for radiating by other wind power parts, thereby ensuring the stability of heat radiation of the electric appliance box.
In the solution of the present embodiment, all of the first side of the box body 10 is the heat conducting plate 11, and the heat dissipating disc body 30 is covered on the first side of the box body 10. As another alternative embodiment, a part of the first side of the box 10 may be the heat conducting plate 11. In the technical scheme of this embodiment, the heat conducting plate 11 is formed at the bottom of the box body 10, and the corresponding heat dissipation disk body 30 is also installed at the bottom of the box body 10, so that the waterproof problem of the electrical box can be effectively solved, and the shock resistance of the electrical control box can be effectively improved. As another alternative embodiment, the heat conducting plate 11 may be disposed on the other side of the box body 10.
As shown in fig. 1, as a more preferred embodiment, the heat-dissipating disk body 30 is connected to the heat-conducting plate 11 via heat-dissipating ribs 31. The heat dissipating ribs 31 serve to increase the heat dissipating area and transfer the heat of the heat conducting plate 11. In the solution of the present embodiment, the heat dissipation ribs 31 are formed on the heat dissipation plate body 30. As another alternative embodiment, the heat dissipating ribs 31 may be formed on the bottom of the heat conductive plate 11.
As shown in fig. 2, preferably, in the solution of the present embodiment, the heat dissipation rib 31 extends along the airflow flowing direction of the heat dissipation air duct c. The heat dissipating ribs 31 constitute a part of the heat dissipating air duct c, and guide the airflow. More preferably, the heat dissipation ribs 31 are multiple, and the multiple heat dissipation ribs 31 are arranged at intervals in parallel, so that the heat dissipation area can be further increased.
As an alternative embodiment, as shown in fig. 1, the heat dissipation structure of the electrical box further includes a negative pressure connection component 40, and the negative pressure connection component 40 is disposed at the first end of the heat dissipation air duct c. When in use, the negative pressure connecting component 40 can be communicated with a component generating negative pressure or a part generating negative pressure in the refrigerating unit, so as to drive airflow to circulate in the heat dissipation air duct c. More preferably, the heat dissipation structure of the electrical box further includes a filter screen 50, the filter screen 50 is disposed at the second end of the heat dissipation air duct c, and the filter screen 50 is disposed to prevent impurities in the air from entering the heat dissipation air duct c.
As shown in fig. 3, the present invention further provides a refrigeration unit, which includes the above-mentioned heat dissipation structure for an electrical box. The refrigerating unit comprises a condensing fan 60, the condensing fan 60 is arranged on the air duct cavity 70, and the negative pressure connecting component 40 is communicated with the air duct cavity 70. When the air duct structure is used, the air duct cavity 70 where the condensing fan 60 is located generates negative pressure, and further, airflow heat dissipation can be generated in the heat dissipation air duct c through the negative pressure connecting component 40.
As other alternative embodiments, the heat dissipation structure of the electrical box may also be mounted to the evaporation fan.
By applying the technical scheme of the invention, the existing fan component of the refrigerating unit is utilized to radiate the electric box, the use of an additional fan is reduced, the reliability of the condensing fan 60 or the evaporating fan is higher, the forced convection effect is better, and the reliability of the refrigerating unit on the radiation of the electric box is further improved.
It should be noted that the technical scheme of the refrigerating unit is particularly suitable for the refrigerating unit for the new energy refrigerator car.
Alternatively, the heat dissipation plate body 30 and the heat conduction plate 11 may be made of an aluminum block.
As shown in fig. 4, the present invention further provides a control method of a refrigeration unit, which is used for controlling the refrigeration unit, wherein the refrigeration unit comprises a compressor and a driving plate for controlling the compressor, and the electric element 20 comprises the driving plate. The control method comprises the following steps:
detecting the real-time temperature t of the driving plate, and comparing the real-time temperature t with the set temperature t 1;
if t is less than t1, controlling the condensing fan 60 or the evaporating fan to continuously run at the current rotating speed;
and if t is more than or equal to t1, controlling the condensing fan 60 or the evaporating fan to operate at a higher rotating speed.
By applying the technical scheme of the invention, when the real-time temperature t of the driving plate is lower than the set temperature t1, the driving plate can be cooled by generating airflow heat dissipation in the heat dissipation air duct c through the negative pressure connecting part 40 through the normal operation of the condensing fan 60 or the evaporating fan; if the real-time temperature t of the driving plate is higher than the set temperature t1, the condensing fan 60 or the evaporating fan is controlled to increase the rotating speed to operate, so that the airflow in the heat dissipation air duct c is accelerated, and the heat dissipation effect is improved.
It should be noted that if t < t1, the condensing fan 60 or the evaporating fan is controlled to continue to operate at the current rotation speed, where "the current rotation speed" refers to the rotation speed of the condensing fan 60 or the evaporating fan based on the condensing requirement or the evaporating requirement, that is, in the case of t < t1, the condensing fan 60 or the evaporating fan is not controlled based on the temperature detection.
More preferably, in the technical solution of this embodiment, the control method further includes: the real-time temperature t is also compared with a critical temperature t 2;
if t is more than or equal to t1 and less than t2, controlling the condensing fan 60 or the evaporating fan to increase the rotating speed to operate;
if t is more than or equal to t2, the operation frequency of the compressor is reduced while the condensing fan 60 or the evaporating fan is controlled to operate at a higher rotating speed.
In this embodiment, if the real-time temperature t of the driving plate is far higher than the set temperature t1 and exceeds the critical temperature t2, which indicates that the heat dissipation effect cannot meet the requirement of cooling the driving plate even if the condensing fan 60 or the evaporating fan is controlled to operate at a higher rotation speed, the operating frequency of the compressor is reduced, and the generation of the temperature of the driving plate is controlled.
According to the control method of the refrigerating unit, the temperature of the driving plate can be quickly reduced, the effect of quickly radiating is achieved, the frequency limitation and the frequency reduction of the compressor are avoided, and the effect of quickly refrigerating the whole unit is achieved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. The utility model provides an electrical apparatus box heat radiation structure which characterized in that includes:
the box body (10), at least part of the first side of the box body (10) is a heat-conducting plate (11), an electric element (20) is arranged in the box body (10), and the electric element (20) is connected with the heat-conducting plate (11);
the heat dissipation plate body (30) is arranged on the first side outside the box body (10), the heat dissipation plate body (30) is connected with the heat conduction plate (11), and a heat dissipation air duct (c) is formed between the heat dissipation plate body (30) and the heat conduction plate (11).
2. The heat dissipating structure of an electrical box as claimed in claim 1, wherein the heat dissipating plate body (30) is connected to the heat conducting plate (11) by a heat dissipating rib (31).
3. The heat dissipating structure of the electrical box as claimed in claim 2, wherein the heat dissipating ribs (31) are formed on the heat dissipating tray body (30).
4. The heat dissipating structure of the electrical box according to claim 2, wherein the heat dissipating ribs (31) extend in the airflow direction of the heat dissipating air duct (c).
5. The heat dissipation structure of an electrical box as claimed in claim 4, wherein the heat dissipation ribs (31) are multiple, and the multiple heat dissipation ribs (31) are arranged in parallel at intervals.
6. The heat dissipating structure of an electrical box according to claim 1, wherein the heat conductive plate (11) is formed on the entire first side of the box body (10), and the heat dissipating disc body (30) is disposed to cover the first side of the box body (10).
7. The heat dissipating structure of an electrical box according to claim 1, further comprising a negative pressure connecting member (40), wherein the negative pressure connecting member (40) is disposed at the first end of the heat dissipating air duct (c).
8. The electrical box heat dissipation structure of claim 7, further comprising a filter screen (50), wherein the filter screen (50) is disposed at the second end of the heat dissipation air duct (c).
9. A refrigeration unit including an appliance box heat dissipation structure, wherein the appliance box heat dissipation structure is as claimed in claim 7 or 8, the refrigeration unit comprising:
the negative pressure connecting component comprises a condensation fan (60) or an evaporation fan, wherein the condensation fan (60) or the evaporation fan is arranged on an air duct cavity (70), and the negative pressure connecting component (40) is communicated with the air duct cavity (70).
10. The refrigeration unit of claim 9, wherein the refrigeration unit is a refrigeration unit for a new energy refrigerated vehicle.
11. A control method for a refrigeration unit, characterized in that it is used to control a refrigeration unit as claimed in claim 9 or 10, said refrigeration unit comprising a compressor and a drive plate controlling said compressor, said electrical element (20) comprising said drive plate, said control method comprising:
detecting the real-time temperature t of the driving plate, and comparing the real-time temperature t with a set temperature t 1;
if t is less than t1, controlling the condensing fan (60) or the evaporating fan to continuously run at the current rotating speed;
and if t is more than or equal to t1, controlling the condensing fan (60) or the evaporating fan to operate at a higher rotating speed.
12. The refrigeration unit control method according to claim 11, further comprising: also comparing the real-time temperature t with a critical temperature t 2;
if t is more than or equal to t1 and less than t2, controlling the condensing fan (60) or the evaporating fan to increase the rotating speed to operate;
if t is more than or equal to t2, the operation frequency of the compressor is reduced while the condensing fan (60) or the evaporating fan is controlled to operate at a higher rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011221078.8A CN112236017B (en) | 2020-11-04 | Heat dissipation structure of electric box, refrigerating unit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011221078.8A CN112236017B (en) | 2020-11-04 | Heat dissipation structure of electric box, refrigerating unit and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112236017A true CN112236017A (en) | 2021-01-15 |
| CN112236017B CN112236017B (en) | 2024-07-16 |
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|---|---|---|---|---|
| CN105333576A (en) * | 2015-11-20 | 2016-02-17 | 广东美的制冷设备有限公司 | Method and device for controlling outdoor fan of air conditioner |
| CN107166563A (en) * | 2017-05-31 | 2017-09-15 | 海信（广东）空调有限公司 | Window type air conditioner and electric control heat dissipation method thereof |
| CN109882946A (en) * | 2019-03-26 | 2019-06-14 | 珠海格力电器股份有限公司 | Electrical apparatus box and air conditioner |
| CN110356192A (en) * | 2019-06-26 | 2019-10-22 | 珠海格力电器股份有限公司 | Vehicle air conditioner, heat dissipation method of circuit heating device, computer device and computer readable storage medium |
| CN111878913A (en) * | 2020-07-02 | 2020-11-03 | 宁波奥克斯电气股份有限公司 | Variable frequency control method and device, air conditioner and storage medium |
| CN213522849U (en) * | 2020-11-04 | 2021-06-22 | 珠海格力电器股份有限公司 | Electrical apparatus box heat radiation structure and refrigerating unit |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333576A (en) * | 2015-11-20 | 2016-02-17 | 广东美的制冷设备有限公司 | Method and device for controlling outdoor fan of air conditioner |
| CN107166563A (en) * | 2017-05-31 | 2017-09-15 | 海信（广东）空调有限公司 | Window type air conditioner and electric control heat dissipation method thereof |
| CN109882946A (en) * | 2019-03-26 | 2019-06-14 | 珠海格力电器股份有限公司 | Electrical apparatus box and air conditioner |
| CN110356192A (en) * | 2019-06-26 | 2019-10-22 | 珠海格力电器股份有限公司 | Vehicle air conditioner, heat dissipation method of circuit heating device, computer device and computer readable storage medium |
| CN111878913A (en) * | 2020-07-02 | 2020-11-03 | 宁波奥克斯电气股份有限公司 | Variable frequency control method and device, air conditioner and storage medium |
| CN213522849U (en) * | 2020-11-04 | 2021-06-22 | 珠海格力电器股份有限公司 | Electrical apparatus box heat radiation structure and refrigerating unit |
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