CN209913696U - High-voltage frequency converter cooling device adopting heat pipe for heat transfer - Google Patents
High-voltage frequency converter cooling device adopting heat pipe for heat transfer Download PDFInfo
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- CN209913696U CN209913696U CN201921133081.7U CN201921133081U CN209913696U CN 209913696 U CN209913696 U CN 209913696U CN 201921133081 U CN201921133081 U CN 201921133081U CN 209913696 U CN209913696 U CN 209913696U
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Abstract
The utility model discloses an adopt high-voltage inverter cooling device of heat pipe heat transfer relates to cooling arrangement technical field. The utility model discloses a set up the water-cooling heat exchanger in the high-pressure frequency conversion room and set up the air cooling heat exchanger outside the high-pressure frequency conversion room, the water-cooling heat exchanger is used for cooling the produced high-temperature gas of high-pressure frequency conversion, and the air cooling heat exchanger is used for cooling the refrigerant of the gasification of being heated. The utility model discloses can be applicable to high-voltage inverter's cooling process. The utility model has the advantages of simple structure, installation and maintenance are convenient and with low costs, and the cooling effect is good, and the energy consumption is low in the operation process, has good practical value and economic benefits.
Description
Technical Field
The utility model relates to a cooling arrangement technical field, concretely relates to adopt high-voltage inverter cooling device of heat pipe heat transfer.
Background
The frequency converter is an electric energy control device which converts a power frequency power supply into another frequency by utilizing the on-off action of a power semiconductor device. With the rapid development of modern power electronic technology and microelectronic technology, high-voltage high-power variable-frequency speed regulation devices are continuously mature, and the high-voltage problem which is difficult to solve originally is solved well in recent years by device series connection or unit series connection.
High-voltage inverter generally installs in the high-voltage inverter, high-voltage inverter can produce high temperature at the operation in-process, these heats mainly spill through the radiator fan at high-voltage inverter top, consequently can have a large amount of high-temperature gas (about 50 ℃) in high-voltage inverter's radiator fan exit, these high-temperature gas can make the temperature rise in the high-voltage inverter, need carry out timely cooling to the high-voltage inverter in, otherwise the phenomenon that high temperature burns out high-voltage inverter will appear.
In the prior art, two ways of reducing the temperature of the high-voltage frequency conversion chamber are provided, one way is to adopt an indoor air conditioner, and although the method can achieve a good cooling effect, the comprehensive cost of the method is very high due to very high installation and operation and maintenance costs of the air conditioner and huge energy consumption. And the other method is to adopt a water-cooling heat exchanger for cooling, the method is to extract high-temperature gas in the high-pressure frequency conversion chamber to the water-cooling heat exchanger positioned outside the high-pressure frequency conversion chamber for heat exchange with cooling water, and convey low-temperature gas after heat exchange to the high-pressure frequency conversion chamber, so as to achieve the purpose of cooling. Although the operation energy consumption of the method is low, the method needs to be matched with a water pump, a cooling tower and a large number of pipelines for use, the installation cost is high, the installation work amount is large, the cooling effect is general, a large number of water resources are consumed in the operation process, and the method cannot adapt to the current energy-saving and environment-friendly production concept.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide an adopt heat pipe heat transfer's high-voltage inverter cooling device. The utility model has the advantages of simple structure, installation and maintenance are convenient and with low costs, and the cooling effect is good, and the energy consumption is low in the operation process, has good practical value and economic benefits.
The utility model relates to a high-voltage inverter cooling device adopting heat pipes to transfer heat, which comprises a water-cooling heat exchanger, an air-cooling heat exchanger, a fan, a cooling mechanism and a high-voltage frequency conversion chamber for installing the high-voltage inverter; the water-cooling heat exchanger is arranged in the high-voltage frequency conversion chamber and is provided with a first hot air channel and a refrigerant channel which exchange heat with each other; the air-cooled heat exchanger is arranged outside the high-voltage frequency conversion chamber, a cavity is arranged in the air-cooled heat exchanger, and a second hot air channel and a cold air channel which exchange heat with each other are arranged in the cavity; the cavity is provided with an air inlet communicated with the outside of the air-cooled heat exchanger; the fan is used for extracting gas in the cavity;
one end of the first hot air channel is communicated with an outlet of the heat dissipation fan, and the other end of the first hot air channel is communicated with the inside of the high-voltage frequency conversion chamber; a refrigerant is arranged in the refrigerant channel, and the refrigerant channel is communicated with the second hot air channel end to end;
one end of the cold air channel is communicated with the air inlet through the cooling mechanism, the other end of the cold air channel is communicated with the cavity, and the setting height of the air cooling heat exchanger is higher than that of the water cooling heat exchanger.
Preferably, the cooling mechanism comprises a wet film, a water pump, a water tank and a water replenishing pipe; the wet film is arranged on one side of the air inlet, and the air flowing in from the air inlet passes through the wet film; the water pump is communicated with the water tank and used for pumping water in the water tank to supply water for the wet film, and the water replenishing pipe is communicated with the water tank.
Preferably, a ball valve is arranged between the water tank and the water replenishing pipe.
Preferably, a first water pan is arranged below the water-cooled heat exchanger.
Preferably, a second water pan is arranged below the air-cooled heat exchanger.
Preferably, a filter screen is arranged at the air inlet.
Preferably, the second hot air channel is arranged above the refrigerant channel, and the outlet of the second hot air channel is higher than the inlet of the refrigerant channel.
A high-voltage inverter cooling device that adopts heat pipe to conduct heat, its advantage lies in:
1. the utility model discloses set up the water-cooling heat exchanger indoor, set up the air cooling heat exchanger outdoor. High-temperature gas generated by the high-voltage frequency converter enters the water-cooling heat exchanger, the refrigerant exchanges heat with the high-temperature gas to carry away heat in the high-temperature gas, and the cooled gas is discharged into the high-voltage frequency conversion chamber to reduce the temperature in the high-voltage frequency conversion chamber. And the refrigerant absorbs heat and evaporates to become gas which flows to a second hot air channel of the air-cooled heat exchanger. The air cooling heat exchanger extracts outside air and cools the air to enable low-temperature air to exchange heat with the gaseous refrigerant, so that the temperature of the gaseous refrigerant is reduced, and the gaseous refrigerant is condensed and liquefied. Because the air cooling heat exchanger is higher than the water cooling heat exchanger, the liquid refrigerant naturally flows back into the refrigerant channel under the action of gravity, and the high-temperature gas is cooled by repeated heat exchange. The utility model discloses an above-mentioned structure can effectively cool off high-temperature gas to refrigerant reuse, device self forms a cooling circulation, and simple structure need not supporting a large amount of water pumps, cooling tower and water pipe and uses, and installation and maintenance are convenient and with low costs, and the cooling effect is good, and the energy consumption is low in the operation process, has good practical value and economic benefits.
2. The utility model discloses because the refrigerant can reuse, need not external a large amount of cooling water, only need external a small amount of water be used for wet film moisturizing process, can practice thrift the water resource consumption of cooling process greatly. And because the refrigerant can high-efficient heat transfer, the volume that realizes the cooling is less, and the liquid volume that circulates in the device is less promptly, can effectively reduce the emergence of device weeping phenomenon, improves the factor of safety of device, reduces the device weeping and leads to the possibility of harm high-voltage inverter.
3. The utility model discloses a gas circulation is airtight circulation, consequently can not produce the negative pressure in the high-pressure frequency conversion room, and the outdoor dust of high-pressure frequency conversion can not be because of the negative pressure gets into in the high-pressure frequency conversion room, avoids the high-pressure frequency converter to receive the dust influence to lead to damaging.
Drawings
Fig. 1 is a schematic structural diagram of a cooling apparatus for a high-voltage inverter using heat pipes to transfer heat according to the present invention;
fig. 2 is a structural block diagram of the heat exchange process of the present invention.
Description of reference numerals: 1-a water-cooled heat exchanger, 11-a first hot air channel, 12-a refrigerant channel, 2-an air-cooled heat exchanger, 21-a cold air channel and 22-a second hot air channel; 3-a fan, 4-a cooling mechanism, 41-a wet film, 42-a water pump, 43-a water tank, 44-a water replenishing pipe, 45-a ball valve, 5-an air inlet, 6-a pipeline, 7-a first water pan, 8-a second water pan, 9-a filter screen, 10-a high-voltage frequency converter and 101-a cooling fan.
Detailed Description
As shown in fig. 1 and fig. 2, a high-voltage inverter cooling device using heat pipe for heat transfer includes a high-voltage frequency conversion chamber for installing a high-voltage inverter 10. The top of the high-voltage frequency converter 10 is provided with a cooling fan 101, and a water-cooled heat exchanger 1 is hung on one side of the high-voltage frequency converter 10. The water-cooled heat exchanger 1 comprises a shell, wherein a cavity is arranged in the shell, a plurality of heat exchange tubes are arranged in the cavity, and the heat exchange tubes are first hot air channels 11. One end of the first hot air channel 11 is provided with an outlet communicated with the heat dissipation fan 101 through a pipeline, and the other end is communicated with the inside of the high-voltage frequency conversion chamber. The space outside the heat exchange tube in the cavity is a refrigerant channel 12 for the circulation of refrigerant. The refrigerant channel 12 is communicated with the second hot air channel 22 in the air-cooling heat exchanger 2 end to form a closed cycle, so that the refrigerant is circularly converted in liquid and gas states and circularly flows in the two channels, and the temperature reduction process is repeated. When the water-cooled heat exchanger 1 works, high-temperature gas generated by the high-voltage frequency converter 10 enters the first hot air channel 11, and meanwhile, a refrigerant circulates in a cavity outside the first hot air channel 11. The refrigerant exchanges heat with high-temperature gas through the pipe wall of the first hot air channel 11, the refrigerant takes away heat in the high-temperature gas, so that the temperature of the high-temperature gas is reduced, and the cooled gas flows into the high-pressure frequency conversion chamber through the outlet of the first hot air channel 11, so that the temperature in the high-pressure frequency conversion chamber is reduced. The refrigerant absorbs heat, the temperature rises and is gasified, and the gaseous refrigerant flows into the second hot air channel 22 and is cooled and liquefied in the air-cooled heat exchanger 2. In this embodiment, the refrigerant may be ammonia or R-134A or R-404A.
The structure of the air-cooled heat exchanger 2 is similar to that of the water-cooled heat exchanger 1, gaseous refrigerant circulates in the second hot air channel 22, low-temperature air extracted from the outside flows in the cold air channel 21, heat is exchanged between the gaseous refrigerant and the cold air channel 21 through the pipe wall of the second hot air channel 22, the gaseous refrigerant is cooled and liquefied, and the gaseous refrigerant flows back to the refrigerant channel 12 of the water-cooled heat exchanger 1 to be reused. The air cooling heat exchanger 2 is arranged outside the high-voltage frequency conversion chamber in a wall-mounted mode, and the height of the air cooling heat exchanger is higher than that of the water cooling heat exchanger 1, so that gaseous refrigerant can naturally flow back to the refrigerant channel 12 under the action of gravity after being liquefied. The air-cooled heat exchanger 2 is provided with an air inlet 5, the air inlet 5 is communicated with the outside of the air-cooled heat exchanger 2, the air-cooled heat exchanger is also provided with a fan 3, the air inlet of the fan 3 is communicated with the cavity inside the air-cooled heat exchanger 2, and the air outlet is communicated with the outside of the air-cooled heat exchanger 2. A cooling mechanism 4 is arranged between the air inlet 5 and the inlet of the cold air channel 21, and the cooling mechanism 4 is used for cooling and humidifying the air flowing in from the air inlet 5. The cooling mechanism 4 comprises a wet film 41, a water tank 43, a water pump 42, a water replenishing pipe 44 and a ball valve 45. The wet film 41 is parallel to the plane of the air inlet 5 and is arranged on the inner side of the air inlet 5, so that the air flowing in from the air inlet 5 passes through the wet film 41, the wet film 41 has the function of cooling and humidifying the passing air, and the cooling process is equal enthalpy cooling. The water tank 43 is connected to the water pump 42 and also to the water supply pipe 44. The water replenishing pipe 44 is communicated with an external water supply device, such as municipal water replenishing or domestic water, and the water replenishing pipe 44 replenishes water for the water tank 43. The water inlet of the water pump 42 is communicated with the water tank 43, the water outlet is arranged right above the wet film 41, the water pump 42 pumps the water in the water tank 43 to the upper part of the wet film 41 to flow out, so as to supplement water for the wet film 41, and the temperature of the gas flowing through the wet film 41 is greatly reduced. A ball valve 45 is arranged between the water tank 43 and the water replenishing pipe 44, and the ball valve 45 is used for controlling the communication or the closing between the water replenishing pipe 44 and the water tank 43, so that a worker can conveniently control the water tank 43 to start or stop water replenishing.
When the air-cooled heat exchanger 2 is in use, the gaseous refrigerant flows through the second hot air path 22. The fan 3 draws out the gas in the cavity of the air cooling heat exchanger 2, so that negative pressure is formed inside the air cooling heat exchanger, and the outside gas flows in from the air inlet 5 and is changed into low-temperature gas after being cooled by the cooling mechanism 4. The low-temperature gas flows into the cold air passage 21 as a cooling medium, and exchanges heat with the gaseous refrigerant in the second hot air passage 22 to take away heat of the gaseous refrigerant, so that the gaseous refrigerant is liquefied. The liquefied refrigerant will flow back into the refrigerant channel 12 by gravity for reuse. And the gas in the cold air channel 21 rises in temperature after the heat exchange is completed, and flows into the cavity inside the air-cooling heat exchanger 2 from the outlet of the cold air channel 21, the gas with the raised temperature is continuously pumped out by the fan 3, and the gas with low temperature outside is continuously pumped into the air-cooling heat exchanger 2 and is used as a cooling medium after being cooled by the cooling mechanism 4.
The refrigerant passage 12 and the second hot air passage 22 are communicated with each other through a pipe 6. The pipe 6 may be a conventional plastic connecting pipe.
The first water pan 7 is arranged below the water-cooled heat exchanger 1, the leakage problem caused by equipment aging can occur after the service life of part of the water-cooled heat exchanger 1 is longer, and the first water pan 7 is used for receiving the leakage which possibly occurs in the water-cooled heat exchanger 1, so that the leakage is prevented from flowing out to pollute the environment.
A second water pan 8 is arranged below the air-cooled heat exchanger 2, and the second water pan 8 is used for receiving liquid flowing out of the air-cooled heat exchanger 2, such as water in the water tank 43 or condensed water in the cooling process.
A filter screen 9 is arranged at the air inlet 5 of the air-cooled heat exchanger 2, and the filter screen 9 is an air filter screen and mainly used for filtering impurities in the outside air and preventing the impurities from damaging the device.
The second hot air channel 22 is arranged above the refrigerant channel 12, and the height of the outlet of the second hot air channel 22 is higher than the height of the inlet of the refrigerant channel 12. The gaseous refrigerant is cooled and liquefied in the second hot air channel 22, and the second hot air channel 22 is located above the refrigerant channel 12, and under the action of gravity, the liquid refrigerant flows into the inlet of the refrigerant channel 12 from the outlet of the second hot air channel 22, naturally flows back into the refrigerant channel 12, and is repeatedly used for the high-temperature gas cooling process. Because foretell structural design need not external power equipment, can realize the liquid refrigerant backward flow, further reduced the utility model discloses an energy consumption of high-voltage inverter cooling device in the use.
The utility model discloses set up water-cooling heat exchanger 1 indoor, set up air cooling heat exchanger 2 outdoor. High-temperature gas generated by the high-voltage frequency converter 10 enters the water-cooled heat exchanger 1, the refrigerant exchanges heat with the high-temperature gas to carry away heat in the high-temperature gas, and the cooled gas is discharged into the high-voltage frequency conversion chamber to reduce the temperature in the high-voltage frequency conversion chamber. And the refrigerant absorbs heat and evaporates to become gas that flows into the second hot air passageway 22 of the air-cooled heat exchanger 2. The air cooling heat exchanger 2 extracts outside air and cools the air to enable low-temperature air to exchange heat with the gaseous refrigerant, so that the temperature of the gaseous refrigerant is reduced, and the gaseous refrigerant is condensed and liquefied. Because the air-cooled heat exchanger 2 is higher than the water-cooled heat exchanger 1, the liquid refrigerant naturally flows back into the refrigerant channel 12 under the action of gravity, and the high-temperature gas is cooled by repeated heat exchange. The utility model discloses an above-mentioned structure can effectively cool off high-temperature gas to refrigerant reuse, device self forms a cooling circulation, and simple structure need not supporting a large amount of water pumps, cooling tower and water pipe and uses, and installation and maintenance are convenient and with low costs, and the cooling effect is good, and the energy consumption is low in the operation process, has good practical value and economic benefits.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.
Claims (7)
1. A high-voltage frequency converter cooling device adopting heat pipes for heat transfer is characterized in that the high-voltage frequency converter cooling device comprises a water-cooling heat exchanger (1), an air-cooling heat exchanger (2), a fan (3), a cooling mechanism (4) and a high-voltage frequency conversion chamber for installing the high-voltage frequency converter (10); the water-cooled heat exchanger (1) is arranged in the high-voltage frequency conversion chamber, and the water-cooled heat exchanger (1) is provided with a first hot air channel (11) and a refrigerant channel (12) which exchange heat with each other; the air-cooled heat exchanger (2) is arranged outside the high-voltage frequency conversion chamber, a cavity is arranged inside the air-cooled heat exchanger (2), and a second hot air channel (22) and a cold air channel (21) which exchange heat with each other are arranged in the cavity; the cavity is provided with an air inlet (5) communicated with the outside of the air-cooled heat exchanger (2); the fan (3) is used for extracting gas in the cavity;
one end of the first hot air channel (11) is communicated with an outlet of the heat radiation fan (101), and the other end of the first hot air channel is communicated with the inside of the high-voltage frequency conversion chamber; a refrigerant is arranged in the refrigerant channel (12), and the refrigerant channel (12) is communicated with the second hot air channel (22) end to end;
one end of the cold air channel (21) is communicated with the air inlet (5) through the cooling mechanism (4), the other end of the cold air channel is communicated with the cavity, and the air cooling heat exchanger (2) is higher than the water cooling heat exchanger (1).
2. The cooling device of the high-voltage inverter using the heat pipe for transferring heat according to claim 1, wherein the cooling mechanism (4) comprises a wet film (41), a water pump (42), a water tank (43) and a water replenishing pipe (44); the wet film (41) is arranged on one side of the air inlet (5), and the air flowing into the air inlet (5) passes through the wet film (41); the water pump (42) is communicated with the water tank (43) and is used for pumping water in the water tank (43) to supply water for the wet film (41), and the water replenishing pipe (44) is communicated with the water tank (43).
3. The cooling apparatus for a high voltage inverter using heat pipe for transferring heat as claimed in claim 2, wherein a ball valve (45) is disposed between the water tank (43) and the water replenishing pipe (44).
4. The cooling device of the high-voltage inverter adopting the heat pipe for transferring heat according to claim 1, wherein a first water pan (7) is arranged below the water-cooled heat exchanger (1).
5. The cooling device of the high-voltage inverter using the heat pipe for transferring heat according to claim 1, wherein a second water pan (8) is provided below the air-cooled heat exchanger (2).
6. The cooling apparatus for a high voltage inverter using heat pipe for heat transfer according to claim 1, wherein a filter screen (9) is disposed at the air inlet (5).
7. The cooling apparatus for a high-voltage inverter using heat pipes for transferring heat according to claim 1, wherein the second hot air channel (22) is disposed above the refrigerant channel (12), and the outlet of the second hot air channel (22) is located at a height higher than the inlet of the refrigerant channel (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133081.7U CN209913696U (en) | 2019-07-18 | 2019-07-18 | High-voltage frequency converter cooling device adopting heat pipe for heat transfer |
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| CN201921133081.7U CN209913696U (en) | 2019-07-18 | 2019-07-18 | High-voltage frequency converter cooling device adopting heat pipe for heat transfer |
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| CN209913696U true CN209913696U (en) | 2020-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114963357A (en) * | 2020-09-23 | 2022-08-30 | 广州森科节能科技有限公司 | Energy-efficient air-to-air cooling system and equipment thereof |
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2019
- 2019-07-18 CN CN201921133081.7U patent/CN209913696U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114963357A (en) * | 2020-09-23 | 2022-08-30 | 广州森科节能科技有限公司 | Energy-efficient air-to-air cooling system and equipment thereof |
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Address after: 511300 building g-1, No. 82, Xinsha Avenue North, Xintang Town, Zengcheng District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Senke Energy Saving Technology Co.,Ltd. Address before: 511300 building g-1, No. 82, Xinsha Avenue North, Xintang Town, Zengcheng District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Senke Energy Saving Technology Co.,Ltd. |
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