CN203518304U - Power electronic device cooling system and distributed power generation system - Google Patents
Power electronic device cooling system and distributed power generation system Download PDFInfo
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- CN203518304U CN203518304U CN201320594913.1U CN201320594913U CN203518304U CN 203518304 U CN203518304 U CN 203518304U CN 201320594913 U CN201320594913 U CN 201320594913U CN 203518304 U CN203518304 U CN 203518304U
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- cooling
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- power electronic
- cooling system
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- 238000001816 cooling Methods 0.000 title claims abstract description 118
- 238000010248 power generation Methods 0.000 title description 2
- 239000003507 refrigerant Substances 0.000 claims abstract description 49
- 238000004378 air conditioning Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a power electronic device cooling system, this cooling system include air conditioning unit, refrigerant pump, bypass throttling element and cooler, and the refrigerant pump gets liquid from air conditioning unit's first condenser, and liquid refrigerant gets into the cooler after bypass throttling element throttle, locates the low temperature refrigerant at the cooler and for the cooling of power electronic device, gets into air conditioning unit's evaporimeter behind the refrigerant outflow cooler, gets back to air conditioning system in, accomplishes a cooling cycle. The utility model discloses be used for solving among the prior art power electronic device forced air cooling system's radiating effect poor, the big problem of noise. Compared with air cooling and water cooling, the scheme provided by the utility model has good cooling effect and high cooling efficiency; an air cooling system is omitted, so that the equipment is small in size and noise is reduced; the refrigerant of the air conditioning unit is used for completing the refrigeration cycle, so that the power electronic device can be in a closed environment, the influence of dust is avoided, the interior is clean, and the service life is long.
Description
Technical field
The utility model relates to Refrigeration Technique and electric and electronic technical field, particularly a kind of power electronic devices cooling system and distributed generation system.
Background technology
The thermal losses of power electronic devices is large, need to carry out cooling to it, the type of cooling of existing power electronic devices is generally air-cooled, by being installed, the facilities such as blower fan, fan dispel the heat, but its cooling effect is poor, have a lot of problems: air-cooled cooling velocity is slow, blower fan volume is large, causes Whole Equipment volume bigger than normal; Wind Volume causes fan noise bigger than normal; Laying dust problem exerts an influence to the reliability of appliance component; Cooling blower modulability is poor, and energy consumption is high, not energy-conservation; Blower fan air draft causes electric mounting environment temperature to raise, and need to increase corresponding air-conditioning system to machine room.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of power electronic devices cooling system, to solve the poor problem of power electronic devices cooling effect in prior art.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of power electronic devices cooling system, comprise air-conditioning unit, refrigerant pump, by-pass throttle element and cooler, described air-conditioning unit comprises the evaporimeter that connects into air conditioner cooling cycle system, compressor, the first condenser and main road restricting element, described the first condenser, refrigerant pump, by-pass throttle element, cooler and evaporimeter are communicated with successively, the entrance of described refrigerant pump is communicated with described the first condenser, refrigerant delivery side of pump is communicated with by-pass throttle element the second end with the first end of described by-pass throttle element is communicated with the first end of cooler, the second end of described cooler is communicated with described evaporimeter, by described cooler and power electronic devices heat exchange, make power electronic devices cooling.
Further, cooling system also comprises check valve, and the entrance of check valve is communicated with the first condenser, and outlet is communicated with the first end of by-pass throttle element.
Further, cooling system also comprises the second condenser, and the second condenser is connected between cooler and evaporimeter.
Further, cooling system comprises many cooling branch roads, every cooling branch road comprises by-pass throttle element and at least one cooler, the entrance of described every cooling branch road is communicated with the outlet of described refrigerant delivery side of pump and described check valve, and the outlet of described every cooling branch road is communicated with described the second condenser.
Further, by-pass throttle element is a kind of in capillary, restricting orifice, heating power expansion valve, electric expansion valve, or wherein two or more combination.
Further, air-conditioning unit is cold water type air conditioner group.
Further, power electronic devices comprises rectification module and inversion module, and described cooling branch road comprises the first cooling branch road and the second cooling branch road, and described the first cooling branch road and the second cooling branch road are respectively used to cooling described rectification module and inversion module.
Further, power electronic devices also comprises reactor, and described cooling branch road also comprises the 3rd cooling branch road for cooling described reactor.
Further, the first cooling branch road comprises that the first branch road restricting element, the second cooling branch road comprise that the second branch road restricting element, the 3rd cooling branch road comprise the 3rd branch road restricting element, first throttle element and second section fluid element are adjustable restricting element, and the 3rd cooling branch road is fixed proportion formula restricting element.
The utility model also provides a kind of distributed generation system, comprise above-mentioned electronic components cooling system and distributed power station, distributed generation system is powered to the load and/or is generated electricity by way of merging two or more grid systems by described power electronic devices, and described load comprises described air-conditioning unit.
Further, power electronic devices comprises from net inverter, and described distributed power station is connected from net inverter with described, by described from net inverter, be that described air-conditioning unit is powered.
Further, power electronic devices also comprises current transformer, and described current transformer one end is connected with public electric wire net, and the other end is with described distributed power station and be connected from net inverter.
The beneficial effects of the utility model are: with respect to air-cooled and water-cooled, and the good cooling results that refrigerant is cooling, cooling effectiveness is high; Save air cooling system, make equipment volume little, reducing noise; Utilize the refrigerant of air-conditioning unit to complete kind of refrigeration cycle, make power electronic devices avoid dust impact in closed environment, inner clean, service life is long; Be not subject to the impact of air-conditioning unit startup-shutdown.
Accompanying drawing explanation
Fig. 1 is the power electronic devices cooling system structure framework schematic diagram of the utility model embodiment mono-;
Fig. 2 is the power electronic devices cooling system structure framework schematic diagram with the cooling branch road of multichannel of the utility model embodiment mono-;
Fig. 3 is the distributed generation system system structural framework schematic diagram of the utility model embodiment bis-.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment mono-
The power electronic devices cooling system of the present embodiment comprises air-conditioning unit part and power electronic devices cool cycles part, as shown in Figure 1, is the power electronic devices cooling system structure schematic diagram of the present embodiment.Wherein air-conditioning unit comprises evaporimeter 11, compressor 12, the first condenser 13 and main road restricting element 14, the air entry of compressor 12 is communicated with one end of evaporimeter 11 by suction line, the exhaust outlet of compressor 12 is communicated with one end of the first condenser 13 by gas exhaust piping, and the other end of evaporimeter 11 is communicated with the other end of the first condenser 13 by main road restricting element 14.
Power electronic devices cool cycles partly comprises refrigerant pump 31, by-pass throttle element 32 and cooler (not shown).The import of refrigerant pump 31 is communicated with the drain pipe of the first condenser 13, and the outlet of refrigerant pump 31 is communicated with the first end of by-pass throttle element 32, and the second end of by-pass throttle element 32 is communicated with the first end of cooler, and the second end of cooler is communicated with evaporimeter 11.Cooler contacts or near power electronic devices, takes away the heat of power electronic devices by the low temperature refrigerant circulating in cooler, is power electronic devices cooling.
When air-conditioning compressor emergency shutdown, refrigerant pump 31 starts, for refrigerant circulation provides power.Refrigerant pump 31 is pumped to by-pass throttle element 32 by the liquid refrigerants in the first condenser 13, and refrigerant, through throttling, after heat absorption evaporation, finally flows into evaporimeter 11, completes a cool cycles.Cooling to power electronic devices while having realized air-conditioning compressor emergency shutdown by such scheme.
In order to realize when air-conditioning unit is started shooting cooling to power electronic devices.Between the first condenser 13 and by-pass throttle element 32, be also provided with the refrigerant circulation duct in parallel with refrigerant pump 31.Preferably, on this refrigerant circulation duct, be provided with check valve 34, the arrival end of check valve 34 is communicated with the first condenser 13, and the port of export is communicated with the first end of by-pass throttle element 32.Check valve 34 can effectively prevent the short circuit of refrigerant bypass, guarantees that cooling power electronic device has enough cold medium fluxes.
When air-conditioning unit start running, because condensation side pressure is much larger than evaporation side pressure, be subject to the inner refrigerant pressure-acting of air-conditioning unit, liquid refrigerants in the first condenser 13 is through 32 throttlings of by-pass throttle element, in the heat absorption evaporation of cooler place, final inflow in evaporimeter 11, completes a cool cycles.
Refrigerant is flowed through after power electronic devices, can absorb a large amount of heat energy, if do not discharge, finally all can be accumulated in the refrigerant of air-conditioning unit, causes system temperature and the system pressure of the air-conditioning unit under stopped status constantly to rise.If cooling system long-term work under air-conditioning unit stopped status, system temperature continues to rise, and can affect the cooling effect to power electronic devices, and system pressure constantly raises, and can affect the security of whole cooling cycle system.Preferably, between cooler and evaporimeter 11, be provided with the second condenser 33, the low temperature refrigerant flowing out from by-pass throttle element 32 absorbs the heat that power electronic devices distributes and evaporates at cooler, becomes the refrigerant steam that temperature is higher, during refrigerant vapor stream to the second condenser 33, with air or water heat exchange, heat release condensation, becomes liquid refrigerants again, enters evaporimeter 11, get back in air-conditioning unit, complete a cool cycles.
The effect of the second condenser 33 is exactly the reliability that improves system, and cooling system can be run well for a long time under air-conditioning unit stopped status.During this external air conditioner group start work, the second condenser 33 can also prevent that a large amount of heat energy from entering in evaporimeter 11 and causing air-conditioning efficiency to decline.The second condenser 33 is generally selected fin-tube heat exchanger or plate type heat exchanger.
Wherein, cooler is the inner metallic cold plate that is embedded with refrigerant flow path, metallic cold plate contacts with power electronic devices, also can be according to factors such as the shape of site environment situation, power electronic devices, cooling requirements, select suitable cooler type, for example, for can not contact heat-exchanging or to cooling less demanding device, can select fin-tube heat exchanger, plate-fin heat exchanger etc. as cooler.
The quantity of cooling power electronic devices is more as required, or be subject to structural limitations, cannot complete cooling by a cooler, connect on the pipeline between by-pass throttle element 32 and the second condenser 33 a plurality of coolers or many cooling branch roads in parallel are set between refrigerant pump 31 and the second condenser 33, every cooling branch road is provided with by-pass throttle element 32 and at least one cooler.By-pass throttle element 32 can adopt multi-form choke valve, as capillary, restricting orifice (fixing or variable), heating power expansion valve or electric expansion valve, and the wherein combination of two or more choke valve.
As shown in Figure 2, be the cooling power electronic devices cooling system structure schematic diagram of multichannel.Refrigerant through refrigerant pump 31 and/or check valve 34 outputs, after part flow arrangement shunting, enters the three cooling branch roads in tunnel, is equipped with by-pass throttle element 32 and at least one cooler on every branch road.Concrete this power electronic devices is current transformer 20, comprises rectification module, inversion module and reactor.Because the heat radiation of rectification module and inversion module is had relatively high expectations, the first by-pass throttle element 32a on two branch roads and the second by-pass throttle element 32b are adjustable restricting element, as electric expansion valve, according to the actual temperature of rectification module and inversion module, regulate the aperture of electric expansion valve, to obtain suitable cold medium flux.The 3rd by-pass throttle element 32c being positioned on another branch road can adopt fixation type throttle element, as fixedly orifice plate or capillary, according to systematic function, mates best restricting element.Wherein the cooler for cooling rectification module and inversion module is the metallic cold plate structure with refrigerant circulation pipeline, rectification module and inversion module contact with metallic cold plate, the cooling effect of the relative wind-cooling heat dissipating of this radiating mode is better, cooling velocity is fast, cooling effectiveness is high, can greatly reduce the requirements of type selecting of volume and the element of current transformer.
Wherein rectification module and inversion module can be cooling by a cooling branch road, and rectification module is arranged on same cooler or on a branch road two coolers of connecting are set with inversion module, is respectively rectification module and inversion module is cooling.Can reduce the control of Dui Yi road restricting element like this, simplify control and saving components and parts, reduce costs.
Air-conditioning unit is central air-conditioning unit preferably, and the refrigerant storage of central air-conditioning unit is large, enough meets cooling requirement, is further cold water type air conditioner group, is further centrifugal refrigerating machines or screw-type water chiller.
Power electronic devices in the present embodiment can be to maintain the power electronic devices that air-conditioning unit itself runs well, and can be also the power electronic devices in other equipment.
To sum up, the cooling system providing according to the utility model can well solve the cooling problem of power electronic devices, and the cooling capacity of refrigerant is better than air-cooled and water-cooled; This programme is not affected by the switching on and shutting down of air-conditioning unit, during the shutdown of air-conditioning unit, can meet cooling needs equally; Can also, according to cooling requirement, regulate the flow of each branch road refrigerant; Refrigerant is insulator, does not have short circuit or electric leakage hidden danger, safe, utilizes the refrigerant of air-conditioning unit to complete kind of refrigeration cycle, makes power electronic devices avoid dust impact in closed environment, and inner clean, service life is long.
Embodiment bis-
The utility model also provides a kind of distributed generation system, as shown in Figure 3, this distributed generation system comprises above-mentioned power electronic devices cooling system (not shown) and distributed power station 40, and distributed power station 40 is powered and/or generates electricity by way of merging two or more grid systems to public electric wire net 60 to load 50 by power electronic devices.Load 50 comprises above-mentioned air-conditioning unit, can also comprise other electric equipments.This power electronic devices comprises current transformer 20, from net inverter 21 etc.From net inverter 21, be connected between distributed power station 40 and air-conditioning unit or other loads, by described, from net inverter 21, distributed power station 40 is to air-conditioning unit or other load supplyings.Current transformer 20 one end connect public electric wire net 60, the other end connects distributed power station 40 and/or from net inverter 21, distributed power station 40 generates electricity by way of merging two or more grid systems to public electric wire net 60 by current transformer 20, and air-conditioning unit or other loads can be by current transformer 20 from public electric wire net power takings.
Particularly, distributed power station can be photovoltaic plant, wind-power electricity generation power station, wind light mutual complementing power station, biomass power generation power station etc., is preferably photovoltaic plant.
The distributed generation system providing according to the utility model, with power electronic devices cooling unit, can improve reliability and the service life of distributed generation system, reduces the requirements of type selecting of power electronic devices.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (12)
1. a power electronic devices cooling system, is characterized in that:
Comprise air-conditioning unit, refrigerant pump, by-pass throttle element and cooler,
Described air-conditioning unit comprises evaporimeter, compressor, the first condenser and the main road restricting element that connects into air conditioner cooling cycle system,
Described the first condenser, refrigerant pump, by-pass throttle element, cooler and evaporimeter are communicated with successively,
The entrance of described refrigerant pump is communicated with described the first condenser, refrigerant delivery side of pump is communicated with the first end of described by-pass throttle element, the second end of described by-pass throttle element is communicated with the first end of described cooler, the second end of described cooler is communicated with described evaporimeter, by described cooler and described power electronic devices heat exchange, make described power electronic devices cooling.
2. cooling system according to claim 1, is characterized in that, described cooling system also comprises check valve, and the entrance of described check valve is communicated with the first condenser, and outlet is communicated with the first end of described by-pass throttle element.
3. cooling system according to claim 1 and 2, is characterized in that, described cooling system also comprises the second condenser, and described the second condenser is connected between described cooler and described evaporimeter.
4. cooling system according to claim 3, it is characterized in that, described cooling system comprises many cooling branch roads, every cooling branch road comprises by-pass throttle element and at least one cooler, the entrance of described every cooling branch road is communicated with the outlet of described refrigerant delivery side of pump and described check valve, and the outlet of described every cooling branch road is communicated with described the second condenser.
5. cooling system according to claim 3, is characterized in that, described by-pass throttle element is a kind of in capillary, restricting orifice, heating power expansion valve, electric expansion valve, or wherein two or more combination.
6. cooling system according to claim 3, is characterized in that, described air-conditioning unit is cold water type air conditioner group.
7. cooling system according to claim 4, it is characterized in that, described power electronic devices comprises rectification module and inversion module, described cooling branch road comprises the first cooling branch road and the second cooling branch road, and described the first cooling branch road and the second cooling branch road are respectively used to cooling described rectification module and inversion module.
8. cooling system according to claim 7, is characterized in that, described power electronic devices also comprises reactor, and described cooling branch road also comprises the 3rd cooling branch road for cooling described reactor.
9. cooling system according to claim 8, it is characterized in that, described the first cooling branch road comprises that the first branch road restricting element, the second cooling branch road comprise that the second branch road restricting element, the 3rd cooling branch road divide and comprise the 3rd branch road restricting element, described first throttle element and second section fluid element are adjustable restricting element, and described the 3rd cooling branch road is fixed proportion formula restricting element.
10. a distributed generation system, comprise power electronic devices cooling system and distributed power station as described in claim 1 to 9 any one, described distributed generation system is powered to the load and/or is generated electricity by way of merging two or more grid systems by described power electronic devices, and described load comprises described air-conditioning unit.
11. distributed generation systems according to claim 10, is characterized in that, described power electronic devices comprises from net inverter, and described distributed power station is connected from net inverter with described, by described from net inverter, be that described air-conditioning unit is powered.
12. distributed generation systems according to claim 11, is characterized in that, described power electronic devices also comprises current transformer, and described current transformer one end is connected with public electric wire net, and the other end is with described distributed power station and be connected from net inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594913.1U CN203518304U (en) | 2013-09-25 | 2013-09-25 | Power electronic device cooling system and distributed power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594913.1U CN203518304U (en) | 2013-09-25 | 2013-09-25 | Power electronic device cooling system and distributed power generation system |
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| CN203518304U true CN203518304U (en) | 2014-04-02 |
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| CN201320594913.1U Expired - Lifetime CN203518304U (en) | 2013-09-25 | 2013-09-25 | Power electronic device cooling system and distributed power generation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486752A (en) * | 2013-09-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Power electronic device cooling system and distributed power generation system |
| CN110986439A (en) * | 2019-12-18 | 2020-04-10 | 珠海格力电器股份有限公司 | Air conditioning unit with refrigerant filling and recycling functions |
| CN112747391A (en) * | 2019-10-29 | 2021-05-04 | 青岛海尔空调电子有限公司 | Air conditioning unit and compressor cooling control method thereof |
-
2013
- 2013-09-25 CN CN201320594913.1U patent/CN203518304U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486752A (en) * | 2013-09-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Power electronic device cooling system and distributed power generation system |
| WO2015043259A1 (en) * | 2013-09-25 | 2015-04-02 | 珠海格力电器股份有限公司 | Cooling system for power electronic device, and distributed power generation system |
| US10356962B2 (en) | 2013-09-25 | 2019-07-16 | Gree Electric Appliances, Inc. Of Zhuhai | Power electronic device cooling system and distributed power generation system |
| CN112747391A (en) * | 2019-10-29 | 2021-05-04 | 青岛海尔空调电子有限公司 | Air conditioning unit and compressor cooling control method thereof |
| CN110986439A (en) * | 2019-12-18 | 2020-04-10 | 珠海格力电器股份有限公司 | Air conditioning unit with refrigerant filling and recycling functions |
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