Cooling system

Patent metadata

Field	Value
Publication number	US-11612082-B2
Application number	US-202017035020-A
Country	US
Kind code	B2
Filing date	Sep 28, 2020
Priority date	May 15, 2020
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

A cooling system for a data center includes an evaporative condenser, a pump cabinet and a heat exchange terminal. The pump cabinet has a first branch and a second branch, the first branch including a liquid storage tank and a fluorine pump. An input end of the liquid storage tank is connected to an output end of the evaporative condenser, an output end of the liquid storage tank is connected to an input end of the fluorine pump, and an output end of the fluorine pump is connected to an input end of the heat exchange terminal. The second branch includes a compressor with an input end connected to an output end of the heat exchange terminal and an output end connected to an input end of the evaporative condenser.

First claim

What is claimed is:

1. A cooling system, comprising: an evaporative condenser, a pump cabinet and a heat exchange terminal, the pump cabinet comprises a first branch and a second branch, wherein
the first branch comprises a liquid storage tank and a fluorine pump, an input end of the liquid storage tank is connected to an output end of the evaporative condenser, an output end of the liquid storage tank is connected to an input end of the fluorine pump, and an output end of the fluorine pump is connected to an input end of the heat exchange terminal,
the second branch comprises a compressor, an input end of the compressor is connected to an output end of the heat exchange terminal and an output end of the compressor is connected to an input end of the evaporative condenser,
wherein the compressor is an oil-free compressor, the pump cabinet further comprises a third branch which includes a make-up pump and a gas tank, and
wherein an input end of the make-up pump is connected to an output end of the fluorine pump, an output end of the make-up pump is connected to an input end of the gas tank, and an output end of the gas tank is connected to an input end of the compressor,
wherein the third branch further comprises a first electrical ball valve by means of which the make-up pump and the gas tank are connected,
wherein an input end of the electrical ball valve is connected to an output end of the make-up pump, and an output end of the electrical ball valve is connected to an input end of the gas tank,
wherein the third branch further comprises a first check valve by means of which the first electrical ball valve and the gas tank are connected, and
wherein an input end of the first check valve is connected to an output end of the first electrical ball valve, and an output end of the first check valve is connected to an input end of the gas tank.

2. The system according to claim 1 , wherein the pump cabinet further comprises a fourth branch which includes a second electrical ball valve, and
wherein an input end of the second electrical ball valve is connected to an output end of the fluorine pump, and an output end of the second electrical ball valve is connected to an input end of the compressor.

3. The system according to claim 2 , wherein the fourth branch further comprises a first electronic expansion valve by means of which the second electrical ball valve and the compressor are connected, and
wherein an input end of the first electronic expansion valve is connected to an output end of the second electrical ball valve, and an output end of the first electronic expansion valve is connected to an input end of the compressor.

4. The system according to claim 1 , wherein the heat exchange terminal comprises a back plate, a heat exchanger and a fan, a ventilation passage is provided in the back plate, the heat exchanger and the fan are located within the ventilation passage, and
wherein an input end of the heat exchanger is connected to an output end of the fluorine pump, and an output end of the heat exchanger is connected to an input end of the compressor.

5. The system according to claim 4 , wherein the heat exchanger is selected from one of the following types:
copper tube aluminum fin heat exchanger;
micro-channel heat exchanger.

6. The system according to claim 4 , wherein the heat exchange terminal further comprises a second electronic expansion valve, and
wherein an input end of the second electronic expansion valve is connected to an output end of the fluorine pump, and an output end of the second electronic expansion valve is connected to an input end of the heat exchanger.

7. The system according to claim 4 , wherein the system further comprises a first temperature sensor, a second temperature sensor, a bypass valve and a controller, and
wherein the first temperature sensor is located within the evaporative condenser, the second temperature sensor is located at an outlet of the ventilation passage, the bypass valve is connected to the compressor in parallel, and the controller is electrically connected to the first temperature sensor, the second temperature sensor and the bypass valve, respectively.

Assignees

• Beijing Baidu Netcom Sci & Tech Co Ltd
• Beijing Baidu Netcom Sci & Tech Co Ltd

Inventors

• Luo Zhiming
• Duan Yiyi
• Yi Bin
• Li Xiaozhong

Classifications

• H10W40/40

  involving heat exchange by flowing fluids · CPC title

• H05K7/20318

  Condensers · CPC title

• H05K7/20327

  Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds · CPC title

• F28D2021/0028

  for cooling heat generating elements, e.g. for cooling electronic components or electric devices · CPC title

• F25B49/02

  for compression type machines, plants or systems · CPC title