CN110785068B - Electric cabinet and air conditioner of air conditioner - Google Patents
Electric cabinet and air conditioner of air conditioner Download PDFInfo
- Publication number
- CN110785068B CN110785068B CN201911158327.0A CN201911158327A CN110785068B CN 110785068 B CN110785068 B CN 110785068B CN 201911158327 A CN201911158327 A CN 201911158327A CN 110785068 B CN110785068 B CN 110785068B
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- Prior art keywords
- electric cabinet
- air conditioner
- cooling
- insulating
- temperature
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- 239000002826 coolant Substances 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000000110 cooling liquid Substances 0.000 claims abstract description 8
- 238000005057 refrigeration Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002791 soaking Methods 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 11
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009423 ventilation Methods 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
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20936—Liquid coolant with phase change
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20945—Thermal management, e.g. inverter temperature control
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an electric cabinet of an air conditioner and the air conditioner, which comprises a heating component arranged in the electric cabinet, an insulating coolant which is arranged in the electric cabinet and used for soaking at least one heating component, and a cooling component which is connected with a refrigerating system of the air conditioner and used for cooling the insulating coolant. According to the invention, the electric cabinet is sealed, the frequency conversion plate is soaked by the insulating cooling liquid for cooling and radiating, the possibility of contact with air does not exist in the cooling process, so that condensed water cannot be generated in the cooling process to influence the safety performance of an electric appliance, and meanwhile, the cooling component is directly connected with a refrigeration system of an air conditioner to cool the insulating coolant, so that the cooling effect is obvious, and the electric performance is greatly improved.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an electric cabinet of an air conditioner and the air conditioner.
Background
When the special variable frequency air conditioner works under a high-temperature working condition, the electric cabinet cannot actively dissipate heat due to overhigh external temperature, and particularly the IPM module of the variable frequency board can report protection, so that the electric safety of the whole machine is not facilitated, and the high-temperature working capacity of the special variable frequency air conditioner is greatly reduced. And traditional ventilation cooling mode can reduce the electric cabinet leakproofness, is unfavorable for EMC's test. And another kind of refrigerant heat dissipation can cause the condensation phenomenon in the electric cabinet, is unfavorable for electrical safety more.
Disclosure of Invention
The invention provides an electric cabinet of an air conditioner and the air conditioner, aiming at solving the technical problem that in the prior art, a frequency conversion plate is poor in heat dissipation effect or easy to condense.
The technical scheme adopted by the invention is as follows:
the invention provides an electric cabinet of an air conditioner, which comprises a heating component arranged in the electric cabinet and also comprises: the cooling component is arranged in the electric cabinet and used for soaking the insulating coolant of at least one heating component and is connected with a refrigerating system of an air conditioner to cool the insulating coolant.
Further, the heating component comprises a frequency conversion plate. Be equipped with the jack of a plurality of connections frequency conversion boards on the electric cabinet, the jack includes: power inlet wire jack, frequency conversion outlet wire jack, communication inlet wire jack. The electric cabinet is provided with a switchable liquid filling port.
In one embodiment, a cooling assembly comprises: and the heat exchange tube is arranged in the electric cabinet and communicated with a pipeline for flowing a refrigerant in the refrigerating system.
In another embodiment, the cooling assembly comprises a heat exchange pipe communicated with a heat exchanger playing a role in evaporation in the refrigeration system, a cooling box exchanging heat with the heat exchange pipe, a pipeline connecting the cooling box and the electric cabinet into a loop for circulating the insulating cooling liquid, and a pump body arranged on the pipeline and driving the insulating cooling liquid to circularly flow.
Furthermore, the liquid outlet end of the heat exchange tube is connected to an outlet pipeline of the evaporator, the liquid inlet end is provided with branch pipelines which are respectively connected to an inlet pipeline and an outlet pipeline of the evaporator, the branch pipelines of the inlet pipeline are provided with first electromagnetic valves, and the branch pipelines of the outlet pipeline are provided with second electromagnetic valves.
The invention also comprises a temperature sensor for detecting the temperature of the insulating coolant, and a controller for controlling the opening of the electromagnetic valve or the opening of the electromagnetic valve and the pump body according to the temperature of the insulating coolant.
The control is as follows:
and when the temperature of the insulating coolant is greater than a first preset value, the pump body is started.
And when the temperature of the insulating coolant is lower than a second preset value, opening the second electromagnetic valve to close the first electromagnetic valve.
And when the temperature of the insulating coolant is higher than a second preset value, opening the first electromagnetic valve to close the second electromagnetic valve, and when the temperature of the insulating coolant is higher than the first preset value and lower than the second preset value, opening the second electromagnetic valve to close the first electromagnetic valve.
The invention also provides an air conditioner which comprises the electric cabinet, and also mainly comprises a compressor, a condenser, a stop valve and an evaporator which are sequentially and circularly communicated through pipelines.
Compared with the prior art, the frequency conversion board is soaked in the insulating cooling liquid to be cooled and radiated by sealing the electric cabinet, the possibility of contacting with air does not exist in the cooling process, so that the safety performance of an electric appliance cannot be influenced by condensed water generated in the cooling process, and meanwhile, the cooling component is directly connected with a refrigerating system of an air conditioner to cool the insulating coolant, so that the cooling effect is obvious, and the electrical performance is greatly improved.
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 structural diagram of an electric cabinet in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of the present invention;
FIG. 3 is a schematic view of the heat exchange tube in communication with a refrigeration system according to the present invention;
FIG. 4 is a flow chart of an embodiment of the present invention without the pump body;
FIG. 5 is a flow chart of a pump with a pump body according to another embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and 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.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
As shown in fig. 1 and 2, the invention provides an electric cabinet of an air conditioner, which comprises a heating component 2, an insulating coolant and a cooling component, wherein the heating component is installed in the electric cabinet 1, the heating component 2 specifically comprises a frequency conversion board and is installed in the electric cabinet 1 through a bracket, the insulating coolant is specifically insulating oil and is contained in the electric cabinet 1 to soak the heating component 2, the electric cabinet 1 is of a sealing structure, and the cooling component is connected with a refrigerating system of the air conditioner to cool the insulating coolant. Because of insulating coolant liquid soaks the frequency conversion board and cools off the heat dissipation, the cooling process does not have the possibility with the air contact, so can not produce the comdenstion water among the cooling process and influence the security performance of electrical apparatus, and cooling assembly is direct to be connected with the refrigerating system of air conditioner and cools off insulating coolant simultaneously, and the cooling effect is obvious, improves electrical property greatly.
Be equipped with the jack of a plurality of connections frequency conversion boards on the electric cabinet 1, the jack specifically includes: the power supply incoming line jack 11, the frequency conversion outgoing line jack 12 and the communication incoming line jack 13 are provided with aerial plugs, and the sealing performance is excellent. The electric cabinet is also provided with a liquid filling port 14 for adding insulating coolant, the liquid filling port 14 is a metal knob cover, and the electric cabinet is not opened at ordinary times and is only used for filling oil when the insulating coolant in the electric cabinet is insufficient.
As shown in fig. 1, in an implementation, the cooling component includes a heat exchange tube 3, the heat exchange tube 3 is disposed in the electric cabinet 1, and the heat exchange tube 3 is communicated with a pipeline through which a refrigerant flows in the refrigeration system, and is specifically connected to an inlet pipe and an outlet pipe of a heat exchanger (i.e., an evaporator 74) having an evaporation function, the insulating oil is directly cooled by the refrigerant flowing in the refrigeration system, and the heat dissipation efficiency of directly cooling the insulating oil in the electric cabinet is higher.
In another embodiment, as shown in fig. 2, the cooling assembly comprises: the heat exchange tube 3 is arranged in the cooling box 4, the heat exchange tube 3 is communicated with a pipeline through which a refrigerant flows in the refrigerating system and is specifically connected to a pipeline for feeding and discharging the refrigerant from the evaporator 74, and the cooling box 4 and the electric cabinet 1 are connected through the pipeline to form a loop for circulating the insulating cooling liquid. The pump body 5 is specifically an oil pump, and is arranged on a pipeline to drive the insulating cooling liquid to circularly flow. This way the volume of the electric cabinet can be made smaller compared to the previous embodiment.
As shown in fig. 3, since the refrigerant temperature of the inlet pipe and the outlet pipe of the evaporator 74 are different, the heat dissipation effect is different, the refrigerant temperature at the inlet end of the evaporator 74 is about 7 degrees celsius, and the refrigerant temperature at the outlet end of the evaporator is about 13 degrees celsius, so the present invention also provides the following more detailed embodiment.
Specifically, the liquid outlet end of the heat exchange tube 3 is connected to the position of an outlet pipeline of an evaporator of the air conditioner, which is close to the compressor 71, the liquid inlet end of the heat exchange tube 3 is provided with a branch pipeline which is respectively connected to an inlet pipeline and an outlet pipeline of the evaporator 74, the branch pipeline connected to the inlet pipeline is provided with a first electromagnetic valve 61, and the branch pipeline connected to the outlet pipeline is provided with a second electromagnetic valve 62. And the device also comprises a temperature sensor for detecting the temperature of the insulating coolant, and a controller for controlling the opening of the electromagnetic valve or the electromagnetic valve and the pump body according to the temperature of the insulating coolant. In a specific embodiment, the controller is a single chip microcomputer, and is preset with a first preset value (indicated by preset value a in the figure) and a second preset value (indicated by preset value B in the figure), and the second preset value is greater than the first preset value. The temperature sensor is a temperature sensing bulb, and the single chip microcomputer controls the opening and closing of the oil pump by opening and closing the oil pump contactor.
As shown in fig. 5, the specific control manner in the case of the oil pump is specifically as follows: firstly, judging whether the temperature of the insulating oil is greater than a first preset value or not; if not, the pump body 5, the first electromagnetic valve 61 and the second electromagnetic valve 62 are kept closed, and when the temperature of the insulating coolant is greater than the first preset value, the pump body 5 is opened, so that the insulating coolant in the cooling box and the insulating refrigerant in the electric cabinet circulate, and subsequent judgment is continued.
When the temperature of the insulating coolant is higher than a second preset value, the oil temperature is higher, the first electromagnetic valve 61 is opened, the second electromagnetic valve 62 is closed, the insulating oil is cooled by a refrigerant with lower temperature, and the cooling efficiency is improved. When the temperature of the insulating coolant is less than the second preset value, the second solenoid valve 62 is opened and the first solenoid valve 61 is closed.
As shown in fig. 4, the specific control manner in the case of no oil pump and no cooling tank is as follows: firstly, judging whether the temperature of the insulating oil is greater than a first preset value or not, if not, keeping the first electromagnetic valve 61 and the second electromagnetic valve 62 closed, when the temperature of the insulating coolant is greater than the first preset value and less than a second preset value, opening the second electromagnetic valve 62 to close the first electromagnetic valve 61, and when the temperature of the insulating coolant is greater than the second preset value, opening the first electromagnetic valve 61 to close the second electromagnetic valve 62.
The invention also provides an air conditioner, which mainly comprises the following components by using the electric cabinet: a compressor 71, a condenser 72, a shut-off valve 73 and an evaporator 74 which are connected in series by a pipe.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides an electric cabinet of air conditioner, is including installing heating element (2) in electric cabinet (1), its characterized in that still includes: insulating cooling agent which is loaded in the electric cabinet (1) and soaked in at least one heating component (2) and a cooling component which is connected with a refrigeration system of an air conditioner and used for cooling the insulating cooling agent, the cooling assembly includes: a heat exchange tube (3) communicated with the heat exchanger which plays a role of evaporation in the refrigeration system, a cooling box (4) which exchanges heat with the heat exchange tube, a pipeline which connects the cooling box and the electric control box into a loop for the circulation of the insulating cooling liquid, a pump body (5) which is arranged on the pipeline and drives the insulating cooling liquid to flow circularly, the liquid outlet end of the heat exchange tube (3) is connected to an outlet pipeline of the evaporator, the liquid inlet end is provided with branch pipelines which are respectively connected to an inlet pipeline and an outlet pipeline of the evaporator, the branch pipelines of the inlet pipeline are provided with first electromagnetic valves (61) and connected, and the branch pipelines of the outlet pipeline are provided with second electromagnetic valves (62).
2. The electric cabinet of an air conditioner according to claim 1, wherein the heat generating component includes a frequency conversion board.
3. The electric cabinet of the air conditioner according to claim 2, wherein a plurality of jacks for connecting the inverter board are provided on the electric cabinet, and the jacks include: a power supply inlet wire jack (11), a frequency conversion outlet wire jack (12) and a communication inlet wire jack (13).
4. The electric cabinet of air conditioner as claimed in claim 1, wherein said electric cabinet (1) is provided with a switchable filling opening (14).
5. An electric cabinet for an air conditioner according to claim 1, further comprising a temperature sensor for detecting a temperature of the insulating coolant, and a controller for controlling the opening of the solenoid valve or the opening of the solenoid valve and the pump body in accordance with the temperature of the insulating coolant.
6. An electric cabinet for an air conditioner according to claim 5, wherein the pump body is turned on when the insulating coolant temperature is greater than a first preset value.
7. The electric cabinet of an air conditioner according to claim 6, wherein the first solenoid valve is opened to close the second solenoid valve when the temperature of the insulating coolant is greater than a second preset value, and the second solenoid valve is opened to close the first solenoid valve when the temperature of the insulating coolant is less than the second preset value.
8. The electric cabinet of an air conditioner according to claim 6, wherein the first solenoid valve is turned on to turn off the second solenoid valve when the temperature of the insulating coolant is greater than a second preset value, and the second solenoid valve is turned on to turn off the first solenoid valve when the temperature of the insulating coolant is greater than the first preset value and less than the second preset value.
9. An air conditioner characterized by comprising an electric cabinet according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911158327.0A CN110785068B (en) | 2019-11-22 | 2019-11-22 | Electric cabinet and air conditioner of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911158327.0A CN110785068B (en) | 2019-11-22 | 2019-11-22 | Electric cabinet and air conditioner of air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110785068A CN110785068A (en) | 2020-02-11 |
| CN110785068B true CN110785068B (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911158327.0A Active CN110785068B (en) | 2019-11-22 | 2019-11-22 | Electric cabinet and air conditioner of air conditioner |
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| Country | Link |
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| CN (1) | CN110785068B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114025599A (en) * | 2021-11-03 | 2022-02-08 | 珠海格力电器股份有限公司 | Refrigeration plant electric cabinet electromagnetic suppression structure and refrigeration plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7220365B2 (en) * | 2001-08-13 | 2007-05-22 | New Qu Energy Ltd. | Devices using a medium having a high heat transfer rate |
| CN205002333U (en) * | 2015-08-31 | 2016-01-27 | 山东朗进科技股份有限公司 | Fuel cell is air conditioning unit for vehicle |
| CN106091459A (en) * | 2016-06-06 | 2016-11-09 | 济南欧菲特制冷设备有限公司 | A kind of integral type refrigerating system unit |
| CN106569565A (en) * | 2016-10-31 | 2017-04-19 | 曙光信息产业(北京)有限公司 | Immersed liquid-cooled server |
| CN208143687U (en) * | 2018-04-12 | 2018-11-23 | 合肥天鹅制冷科技有限公司 | The cold liquid supply system of self-adaptive temperature |
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| CN110785068A (en) | 2020-02-11 |
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