CN108561979B - Outdoor unit, photovoltaic air conditioning system and electrical equipment - Google Patents
Outdoor unit, photovoltaic air conditioning system and electrical equipment Download PDFInfo
- Publication number
- CN108561979B CN108561979B CN201810491316.3A CN201810491316A CN108561979B CN 108561979 B CN108561979 B CN 108561979B CN 201810491316 A CN201810491316 A CN 201810491316A CN 108561979 B CN108561979 B CN 108561979B
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- China
- Prior art keywords
- condensation
- shell
- outdoor unit
- space
- electrical box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/22—Arrangement or mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/24—Cooling of electric components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
- F24F2005/0067—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention provides an outdoor unit, a photovoltaic air conditioning system and electrical equipment. According to the outdoor unit, the photovoltaic air conditioning system and the electrical equipment, the condensation plate or the partition piece is arranged, the condensation space is formed, the electrical box is only subjected to condensation in the condensation space by utilizing the negative pressure generated by the fan, the problems of short circuit caused by the condensation in the electrical box and the short circuit caused by the condensation generated by the cold air flowing back to the heating area when the negative pressure of the fan disappears are effectively prevented, the heat in the electrical box can be transferred to the air duct cavity through the heat dissipation structure by the heat dissipation structure, the heat is taken away by utilizing the air flow generated by the fan in the photovoltaic power generation mode, the effect of enhancing heat dissipation of the electrical box is achieved, and the air flow can be forced to be formed in the electrical box by utilizing the negative pressure of the fan by utilizing the air outlet, so that the heat dissipation effect in the electrical box is improved.
Description
Technical Field
The invention relates to the technical field of air treatment equipment, in particular to an outdoor unit, a photovoltaic air conditioning system and electrical equipment.
Background
Photovoltaic air conditioners, in particular to full direct current photovoltaic air conditioners, use a large number of power devices (such as photovoltaic inversion grid-connected DC/AC modules, rectification AC/DC modules, direct current load power supply DC/DC modules and the like), all require good space and channels for heat dissipation so as to ensure safe and reliable operation of a unit, but the side air outlet shell of the traditional photovoltaic air conditioning system cannot meet the heat dissipation requirement and has condensation phenomenon.
Disclosure of Invention
In order to solve the above technical problems, an outdoor unit, a photovoltaic air conditioning system and an electrical apparatus are provided that increase heat dissipation efficiency and prevent condensation.
An electrical box comprises a shell, wherein a heating area is formed inside the shell, and a condensation space is formed on the shell.
Further, the electrical box comprises a condensation plate, wherein the condensation plate is arranged outside the shell and encloses the condensation space with part of the outer surface of the shell.
Further, an air inlet is formed in a first side face of the shell, and the condensation plate and all or part of the first side face jointly enclose the condensation space.
Further, an air outlet is formed in the second side face of the shell, and the condensation plate and all or part of the second side face jointly enclose the condensation space.
Further, an air inlet is formed in a first side face of the shell, an air outlet is formed in a second side face of the shell, and the condensation plate and the first side face and the second side face respectively enclose a condensation space;
Or the condensation plate and the first side surface and the second side surface jointly enclose the condensation space
Further, the first side face and the second side face are disposed opposite to each other.
Further, the electrical box comprises a partition member, the partition member is arranged inside the shell, the shell is divided into a condensation space and an installation space, and the heating area is arranged in the installation space.
Further, the partition piece is provided with an air passing hole, and the installation space is communicated with the condensation space through the air passing hole.
An air inlet is formed in a first side face of the shell, an air outlet is formed in a second side face of the shell, and the partition piece and the first side face or the second side face enclose a condensation space.
Further, the first side face and the second side face are disposed opposite to each other.
Further, a heat dissipation structure is arranged on the electrical box, and the heat dissipation structure is arranged corresponding to the heating area.
Further, the heating area is provided with a DC/AC module and an AC/DC module, and the heat dissipation structure is arranged corresponding to the DC/AC module and/or the AC/DC module.
Furthermore, the condensation space is a hollow structure surrounded by double-layer sheet metal parts.
Further, an insect-proof net is arranged in the condensation space.
Further, a water outlet is arranged at the bottom or on the side wall of the condensation space.
Furthermore, a chute is arranged in the condensation space, and the lowest end of the chute is communicated with the water outlet.
The utility model provides an off-premises station, includes casing, fan, baffle and foretell electrical apparatus box, the baffle set up in the casing is inside will the casing divide into wind channel chamber and automatically controlled chamber, the fan with electrical apparatus box all set up in the wind channel chamber, just the fan is in condensation space department produces negative pressure.
Further, the shell is arranged on the partition board, the air inlet penetrates through the partition board and is communicated with the electric control cavity, and gas in the electric control cavity sequentially passes through the air inlet, the heating area and the condensation space and then enters the air channel cavity.
Further, the condensation space is located at one side of the shell away from the partition plate.
Further, the number of fans is two, and two fans are arranged in the shell along the length direction of the partition board, and the electrical box is arranged above the fans above.
A photovoltaic air conditioning system comprises the electrical box or the outdoor unit.
An electrical apparatus comprises the electrical box or the outdoor unit.
According to the outdoor unit, the photovoltaic air conditioning system and the electrical equipment, the condensation plate or the partition piece is arranged, the condensation space is formed, the negative pressure generated by the fan is used for enabling the electrical box to be condensed in the condensation space, the problems of short circuit caused by the condensation generated in the electrical box and the short circuit caused by the condensation generated by the cold air flowing back to the heating area when the negative pressure of the fan disappears are effectively prevented, the heat in the electrical box can be transferred to the air duct cavity through the heat dissipation structure by the heat dissipation structure, the heat is taken away by the air flow generated by the fan in the photovoltaic power generation mode, the effect of enhancing heat dissipation of the electrical box is achieved, the negative pressure of the fan is used for enabling the air flow to be forced in the electrical box, the heat dissipation effect in the electrical box is improved, and the problem of complex structure of the electrical box caused by the fact that the insect prevention structure is independently arranged outside the electrical box is avoided by the insect prevention net is arranged, and the space arrangement of the electrical box is more reasonable.
Drawings
Fig. 1 is a schematic structural diagram of an electrical box of an embodiment of an outdoor unit, a photovoltaic air conditioning system and electrical equipment provided by the invention;
Fig. 2 is a schematic structural diagram of an electrical box of an embodiment of an outdoor unit, a photovoltaic air conditioning system and electrical equipment provided by the invention;
Fig. 3 is a schematic structural diagram of an outdoor unit of an embodiment of an outdoor unit, a photovoltaic air conditioning system and an electrical apparatus according to the present invention;
fig. 4 is a schematic diagram of a portion a of fig. 3 in an embodiment of an outdoor unit, a photovoltaic air conditioning system, and an electrical apparatus provided by the present invention;
In the figure:
101. A housing; 102. a heat-generating region; 103. a condensation space; 104. a condensation plate; 105. an air inlet; 106. an air outlet; 107. a fin; 1. a housing; 2. a blower; 3. a partition plate; 11. an air duct cavity; 12. an electric control cavity.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment of the electrical box shown in fig. 1 to 4 comprises a housing 101, wherein a heating area 102 is formed inside the housing 101, and a condensation space 103 is arranged on the housing 101.
The electric control system of the electric equipment is placed in the shell, and meanwhile, components generating heat in the electric control system are placed at the heating area 102, so that the heat generated in the electric equipment box is concentrated at the heating area 102, the air flow forced to pass through the heating area 102 can be effectively utilized to dissipate heat of the heating area 102, the air flow after absorbing the heat at the heating area 102 can enter the condensation space 103 and is in contact with external cold air in the condensation space 103, condensation is effectively prevented from being generated in the condensation space 103, meanwhile, when the air flow forced to pass through the heating area 102 disappears, the condensation space 103 can block the cold air flowing back to the heating area 102 to a certain extent, and the cold air can exchange heat in the condensation space 103 under the blocked state, so that the cold air is condensed in the condensation space 103, the problem of short circuit caused by condensation of the electric equipment box is effectively prevented.
Further, the electrical box comprises a condensation plate 104, the condensation plate 104 is arranged outside the shell 101, and forms the condensation space 103 with part of the outer surface of the shell 101, under the condition that the structure of the electrical box is not changed, the condensation space 103 is formed outside the shell 101, the problem that the condensation enters the interior of the electrical box to cause short circuit and the like is effectively prevented, and therefore an electronic element is effectively separated from the condensation, and the reliability of the electrical box is improved.
Further, an air inlet 105 is disposed on the first side surface of the housing, and the condensation plate 104 and all or part of the first side surface enclose the condensation space 103 together, that is, the condensation space 103 is disposed in the air inlet direction of the heating area, so that the air entering the heating area is condensed first and then absorbs heat in the heating area.
Further, an air outlet 106 is formed on the second side surface of the housing, the condensation plate 104 and all or part of the second side surface enclose the condensation space 103 together, that is, the condensation space 103 is arranged in the air outlet direction of the heating area 102, so that the air after absorbing heat in the heating area enters the condensation space to be condensed, and meanwhile, when the forced air flow stops, the problem that a large amount of cold air flows back at the air outlet 106 to condense in the heating area 102 can be prevented.
Further, an air inlet 105 is formed on a first side surface of the housing, an air outlet 106 is formed on a second side surface of the housing, the condensation plate 104 and the first side surface and the second side surface respectively enclose one condensation space, namely two condensation spaces 103 are formed on the housing, and meanwhile, air return of the air inlet and the air outlet is prevented;
or the condensation plate 104 and the first side surface and the second side surface enclose the condensation space together, that is, the cross section of the condensation plate 104 is in a U shape, and two sides of the U shape are respectively covered on the corresponding first side surface and second side surface, so as to form a condensation space 103, and the processing procedure of the condensation plate 104 is reduced under the condition of preventing the return air of the air inlet and the air outlet.
Further, the first side face and the second side face are disposed opposite to each other.
Further, the electrical box comprises a partition, the partition is arranged inside the shell 101, and the shell 101 is divided into a condensation space 103 and an installation space, the heating area 102 is arranged in the installation space, namely the partition is arranged in the electrical box, so that the electronic element in the electrical box is separated from the condensation on the premise that the volume of the electrical box is not increased, the electronic element is prevented from being short-circuited, and meanwhile, the condensation space is utilized, under the condition that the forced gas feeding into the electrical box is stopped, the condensation of external cold air in the installation space in the electrical box caused by the backflow of the external cold air into the electrical box is prevented, and the problem of short circuit caused by the condensation of the electrical box is effectively prevented.
Further, the partition is provided with a gas passing hole, and the installation space and the condensation space 103 can exchange gas, so that the gas can exchange heat and condensation in the condensation space 103.
Further, an air inlet 105 is disposed on a first side surface of the housing, an air outlet 106 is disposed on a second side surface of the housing, the partition member and the first side surface or the second side surface enclose the condensation space 103, that is, the partition member can enclose the condensation space 103 with all or part of the first side surface or enclose the condensation space 103 with all or part of the second side surface, or the partition member can be in a U-shaped structure or the like and can cooperate with the first side surface and the second side surface simultaneously to form the condensation space 103, and by utilizing the condensation space, gas during heat dissipation or gas during backflow is firstly condensed in the condensation space 103 and then enters the installation space.
Further, the first side face and the second side face are disposed opposite to each other. The air flow passing through the air inlet 105 sequentially passes through the installation space, the partition piece and the condensation space 103 and then is discharged out of the shell 101 through the air outlet 106, namely, the air flow passing through the air inlet 105 absorbs heat in the installation space, enters the condensation space 103 through the partition piece for heat exchange, and is finally discharged out of the air outlet 106.
Further, a heat dissipation structure is arranged on the electrical box and corresponds to the heating area 102, so that heat of the heating area 102 can be directly led to the outside of the electrical box by using the heat dissipation structure, and the heat dissipation effect is improved.
Further, the heat dissipation structure comprises a plurality of fins 107, one end of each fin 107 is fixedly arranged on the electrical box, and the other end of each fin is far away from the electrical box.
Further, the heat generating area 102 is provided with a DC/AC module and an AC/DC module, and the heat dissipation structure is disposed corresponding to the DC/AC module and/or the AC/DC module.
At least one refrigerant pipeline is arranged in the electric appliance box, heat exchange is carried out between refrigerants in all the refrigerant pipelines and heat in the electric appliance box, and low-temperature refrigerants in the refrigerant pipelines are utilized to absorb heat in the electric appliance box, so that the temperature in the electric appliance box is reduced.
Further, the condensation space 103 is a hollow structure surrounded by a double-layer sheet metal part.
Further, the insect-proof net is arranged in the condensation space 103, so that the problem that the structure of the electrical box is complex due to the fact that the insect-proof structure is independently arranged on the outer side of the electrical box can be avoided.
Further, a drain port is provided on a side wall surrounding the condensation space 103, so that the condensation generated in the condensation space 103 can be drained through the drain port.
Further, a chute is disposed in the condensation space 103, and the lowest end of the chute is communicated with the water outlet.
The utility model provides an off-premises station, includes casing 1, fan 2, baffle 3 and foretell electrical apparatus box, baffle 3 set up in casing 1 inside will casing 1 divide into wind channel chamber 11 and automatically controlled chamber 12, fan 2 with electrical apparatus box all set up in the wind channel chamber 11, just fan 2 is in condensation space 103 department produces the negative pressure, utilizes the negative pressure that fan 2 produced to make produce the air current that flows to condensation space 103 in the electrical apparatus box, and then brings the heat in the electrical apparatus box to the condensation space 103.
Further, the casing 101 is disposed on the partition board 3, and the air inlet 105 penetrates through the partition board 3 and is communicated with the electric control cavity 12, and the air in the electric control cavity 12 sequentially passes through the air inlet 105, the heating area 102 and the condensation space 103 and then enters the air channel cavity 11.
Further, the condensation space 103 is located at a side of the housing 101 away from the partition plate 3.
Further, the number of the fans 2 is two, and the two fans 2 are disposed inside the casing 101 along the length direction of the partition plate 3, and the electrical box is disposed above the fans 2 above.
Preferably, the distance from the condensation space 103 to the partition plate 3 is greater than the distance from the axis of the fan 2 to the partition plate 3.
A photovoltaic air conditioning system comprises the electrical box or the outdoor unit.
An electrical apparatus comprises the electrical box or the outdoor unit.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. An outdoor unit, characterized in that: comprises a shell (1), a fan (2), a baffle plate (3) and an electrical box; the electric appliance box comprises a shell (101), a heating area (102) is formed inside the shell (101), a condensation space (103) is formed in the shell (101), and the fan (2) generates negative pressure at the condensation space (103); the electric appliance box comprises a condensation plate (104), wherein the condensation plate (104) is arranged outside the shell (101) and forms a condensation space (103) with part of the outer surface of the shell (101); an air inlet (105) is formed in a first side face of the shell, an air outlet (106) is formed in a second side face of the shell, and the condensation plate (104) and the first side face and the second side face jointly enclose the condensation space;
Or, the electrical box comprises a partition piece, the partition piece is arranged inside the shell (101) and divides the shell (101) into a condensation space (103) and an installation space, and the heating area (102) is arranged in the installation space; an air inlet (105) is formed in a first side surface of the shell, an air outlet (106) is formed in a second side surface of the shell, and the partition piece and the first side surface or the second side surface enclose the condensation space (103);
a heat dissipation structure is arranged on the electrical box and corresponds to the heating area (102);
the first side and the second side are disposed opposite to each other.
2. The outdoor unit of claim 1, wherein: and the partition piece is provided with a gas passing hole.
3. The outdoor unit of claim 1, wherein: the heating area is provided with a DC/AC module and an AC/DC module, and the heat dissipation structure is arranged corresponding to the DC/AC module and/or the AC/DC module.
4. The outdoor unit of claim 1, wherein: the condensation space is a hollow structure surrounded by double-layer sheet metal parts.
5. The outdoor unit of any one of claims 1 to 4, wherein: an insect-proof net is arranged in the condensation space (103).
6. The outdoor unit of any one of claims 1 to 4, wherein: a water outlet is arranged on the bottom or the side wall of the condensation space (103).
7. The outdoor unit of claim 6, wherein: the condensation space (103) is internally provided with a chute, and the lowest end of the chute is communicated with the water outlet.
8. A photovoltaic air conditioning system, characterized by: an outdoor unit including any one of claims 1 to 7.
9. An electrical device, characterized in that: an outdoor unit including any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491316.3A CN108561979B (en) | 2018-05-21 | 2018-05-21 | Outdoor unit, photovoltaic air conditioning system and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491316.3A CN108561979B (en) | 2018-05-21 | 2018-05-21 | Outdoor unit, photovoltaic air conditioning system and electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108561979A CN108561979A (en) | 2018-09-21 |
| CN108561979B true CN108561979B (en) | 2024-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810491316.3A Active CN108561979B (en) | 2018-05-21 | 2018-05-21 | Outdoor unit, photovoltaic air conditioning system and electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108561979B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708215A (en) * | 2019-02-21 | 2019-05-03 | 珠海格力电器股份有限公司 | Air conditioning unit and fan section thereof |
| CN115342444B (en) * | 2022-08-18 | 2024-06-28 | 珠海格力电器股份有限公司 | Cabinet air conditioner and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013011392A (en) * | 2011-06-29 | 2013-01-17 | Panasonic Corp | Air conditioner |
| JP2013015295A (en) * | 2011-07-06 | 2013-01-24 | Panasonic Corp | Cooling device and air conditioner with same |
| CN205807680U (en) * | 2016-07-22 | 2016-12-14 | 海信科龙电器股份有限公司 | Air condensing units and air conditioner |
| CN208720368U (en) * | 2018-05-21 | 2019-04-09 | 珠海格力电器股份有限公司 | Electrical apparatus box, off-premises station, photovoltaic air conditioning system and electrical equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5611605B2 (en) * | 2010-01-28 | 2014-10-22 | 三洋電機株式会社 | Air conditioner outdoor unit |
| CN103052852B (en) * | 2011-06-29 | 2016-03-02 | 松下电器产业株式会社 | Cooling device and the air conditioner with this cooling device |
-
2018
- 2018-05-21 CN CN201810491316.3A patent/CN108561979B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013011392A (en) * | 2011-06-29 | 2013-01-17 | Panasonic Corp | Air conditioner |
| JP2013015295A (en) * | 2011-07-06 | 2013-01-24 | Panasonic Corp | Cooling device and air conditioner with same |
| CN205807680U (en) * | 2016-07-22 | 2016-12-14 | 海信科龙电器股份有限公司 | Air condensing units and air conditioner |
| CN208720368U (en) * | 2018-05-21 | 2019-04-09 | 珠海格力电器股份有限公司 | Electrical apparatus box, off-premises station, photovoltaic air conditioning system and electrical equipment |
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| Publication number | Publication date |
|---|---|
| CN108561979A (en) | 2018-09-21 |
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