Circulative cooling system and method for controlling circulation in the cooling system

Patent metadata

Field	Value
Publication number	US-9756762-B2
Application number	US-201214361834-A
Country	US
Kind code	B2
Filing date	May 29, 2012
Priority date	Dec 1, 2011
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A circulative cooling system and a method for controlling the circulative cooling system are disclosed. The circulative cooling system is divided into three parts: an internal cooling circulation device, a plate heat exchanger and an external cooling circulation device. The internal cooling circulation device is adapted to perform circulation cooling on a heat-generating device; the plate heat exchanger is adapted to perform heat exchange between external cooling water in the external cooling circulation device and the internal cooling water in the internal cooling circulation device. The external cooling circulation device is adapted to cool the external cooling water. The external cooling primary circulation pump, the cold accumulation water pool, the water-air plate-wing heat exchanger, the cold accumulation air cooler, and the first valve and the second valve may be controlled.

First claim

What is claimed is:

1. A circulative cooling system, comprising an internal cooling circulative device, a plate heat exchanger and an external cooling circulative device, wherein the external cooling cirulative device comprises an external cooling primary circulation pump and a cold-accumulation water pool, a water-air plate wing heat exchanger, a cold-accumulation air cooler, and a first valve and a second valve, wherein:
the internal cooling circulative device is adapted to circulatingly cool a heat-generating device;
the plate heat exchanger is adapted to perform heat exchange between external cooling water from the external cooling circulating device and internal cooling water from the internal cooling circulative device;
the external cooling circulative device is adapted to cool the external cooling water, wherein in the external cooling circulative device;
the external cooling primary circulation pump is adapted to drive the external cooling water to circulate in the external cooling circulation device;
the cold accumulation water pool is adapted to store and cool the external cooling water,
and receive the external cooling water from the plate heat exchanger;
the water-air plate-wing heat exchanger is adapted to cool the external cooling water from the cold accumulation water pool, and supply the external cooling water to the cold accumulation air cooler;
the cold accumulation air cooler is adapted to cool the external cooling water from the water-air plate-wing heat exchanger, and supply the external cooling water to the plate heat exchanger;
the first valve is adapted to control the supplying of the external cooling water stored in the cold accumulation water pool to the plate heat exchanger;
the second valve is adapted to control the supplying of the external cooling water stored in the cold accumulation water pool to the water-air plate-wing heat exchanger.

2. The system according to claim 1 , wherein the system further comprises:
a temperature sensor adapted to measure ambient temperature periodically;
a controller adapted to control the external cooling primary circulation pump, the cold accumulation air cooler, the first valve and the second valve of the external cooling circulation device according to the ambient temperature measured by the temperature sensor.

3. The system according to claim 2 , wherein the internal cooling circulation device comprises a internal cooling primary circulation pump, an internal cooling air cooler, a third valve, a fourth valve and a fifth valve; wherein, in the internal cooling circulation device:
the internal cooling primary circulation pump is adapted to drive the internal cooling water to circulate in the internal cooling circulation device;
the internal cooling air cooler is adapted to cool the internal cooling water heated by a heat generating device;
the third valve is adapted to control the supplying of the internal cooling water by the internal cooling air cooler to the heat generating device;
the fourth valve is adapted to control the supplying of the internal cooling water by the internal cooling air cooler to the plate heat exchanger;
the fifth valve is adapted to control the supplying of the internal cooling water by the plate heat exchanger to the heat generating device.

4. The system according to claim 3 , wherein
the controller further controls the internal cooling primary circulation pump, the internal cooling air cooler, the third valve, the fourth valve and the fifth valve of the internal cooling circulation device according to the ambient temperature measured by the temperature sensor.

5. The system according to claim 4 , wherein
when the ambient temperature measured by the temperature sensor is not higher than a temperature T 1 , the controller is configured to turn on the external cooling primary circulation pump, the internal cooling primary circulation pump, and to turn off fans of the internal cooling air cooler and the cold accumulation air cooler, to open the second valve, the fourth valve, the fifth valve and to close the first valve and third valve.

6. The system according to claim 5 , wherein
when the ambient temperature measured by the temperature sensor is lower than a temperature T 0 and the operation of the heat generating device has been stopped, the controller is configured to open the first valve and close the second valve, wherein T 0 <T 1 .

7. The system according to claim 5 , wherein
when the ambient temperature measured by the temperature sensor is higher than the temperature T 1 and is not higher than a temperature T 2 , the controller is configured to turn on the external cooling primary circulation pump and the internal cooling primary circulation pump; to turn on the fan of the cold accumulation air cooler; to turn off the fan of the internal cooling air cooler; to open the second valve, the fourth valve, the fifth valve, and to close the first valve and the third valve, wherein T 1 <T 2 .

8. The system according to claim 7 , wherein
when the ambient temperature measured by the temperature sensor is higher than the temperature T 2 and not higher than a temperature T 3 , the controller is configured to turn off the external cooling primary circulation pump and turn off the fan of the cold accumulation air cooler, turn on the internal cooling primary circulation pump and the fan of the internal cooling air cooler; open the third valve, close the fourth valve and the fifth valve, wherein T 2 <T 3 and the internal cooling air cooler operates at a predetermined percentage of full power.

9. The system according to claim 8 , wherein
when the ambient temperature measured by the temperature sensor is higher than the temperature T 3 and not higher than a temperature T 4 , the controller is configured to turn on the external cooling primary circulation pump and the internal cooling primary circulation pump; turn on the fan of the internal cooling air cooler and turn off the fan of the cold accumulation air cooler; open the second valve, the fourth valve, and the fifth valve, and close the first valve and the third valve, wherein T 3 <T 4 and the internal cooling air cooler operates at a predetermined percentage of full power.

10. The system according to claim 9 , wherein
when the ambient temperature measured by the temperature sensor is higher than the temperature T 4 and not higher than a temperature T 5 , the controller is configured to turn on the external cooling primary circulation pump and the internal cooling primary circulation pump; turn on the fan of the internal cooling air cooler and the fan of the cold accumulation air cooler; meanwhile, open the second valve, the fourth valve, and the fifth valve, and close the first valve and the third valve, wherein T 4 <T 5 and the internal cooling air cooler operates at a predetermined percentage of full power.

11. The system according to claim 10 , wherein
when the ambient temperature measured by the temperature sensor is higher than the temperature T 5 and not higher than a temperature T 6 , the controller is configured to turn off the external cooling primary circulation pump and turn off the fan of the cold accumulation air cooler, turn on the internal cooling primary circulation pump and the fan of the internal cooling air cooler; open the third valve, and close the fourth valve and the fifth valve, wherein T 5 <T 6 and the internal cooling air cooler operates at a predetermined percentage of full power.

12. The system according to claim 11 , wherein
when the ambient temperature measured by the temperature sensor is higher than the temperature T 6 , the controller is configured to turn on the internal c

Assignees

• Ding Yigong
• Yao Weizheng
• Zhang Jian
• Ruan Weihua
• Wang Dawei
• State Grid Corp China
• Xuchang Xuji Jing Rui Science & Tech Co Ltd

Inventors

• Ding Yigong
• Yao Weizheng
• Zhang Jian
• Ruan Weihua
• Wang Dawei

Classifications

• H05K7/20945

  Thermal management, e.g. inverter temperature control · CPC title

• H05K7/20281 Primary

  Thermal management, e.g. liquid flow control · CPC title

• H05K7/20927 Primary

  Liquid coolant without phase change · CPC title