US 12,238,902 B2
Refrigeration system for data center
Zhiming Luo, Beijing (CN)
Assigned to BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD., Beijing (CN)
Filed by BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD., Beijing (CN)
Filed on Jul. 25, 2022, as Appl. No. 17/814,625.
Claims priority of application No. 202111629810.X (CN), filed on Dec. 28, 2021; and application No. 202123362735.3 (CN), filed on Dec. 28, 2021.
Prior Publication US 2022/0361379 A1, Nov. 10, 2022
Int. Cl. H05K 7/20 (2006.01)
CPC H05K 7/20827 (2013.01) [H05K 7/20309 (2013.01); H05K 7/20318 (2013.01); H05K 7/20327 (2013.01); H05K 7/20354 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A refrigeration system for a data center, the data center comprising a cabinet in a room thereof, the system comprising:
an indoor module;
a main outdoor heat-dissipation module comprising a first condenser and a first compressor, wherein an inlet of the first compressor is connected to an outlet of the indoor module, an outlet of the first compressor is connected to a gaseous refrigerant inlet of the first condenser, and a liquid refrigerant outlet of the first condenser is connected to an inlet of the indoor module; and
an auxiliary outdoor heat-dissipation module comprising a second condenser and a second compressor, wherein an inlet of the second compressor is connected to the outlet of the indoor module, an outlet of the second compressor is connected to a gaseous refrigerant inlet of the second condenser, and a liquid refrigerant outlet of the second condenser is connected to the inlet of the indoor module,
wherein a refrigeration cycle passage for the data center is formed by the indoor module, the first condenser and the first compressor when the main outdoor heat-dissipation module is in a normal condition,
the refrigeration cycle passage for the data center is formed by the indoor module, the second condenser and the second compressor when the main outdoor heat-dissipation module fails;
wherein the indoor module comprises a first gas-liquid separator, a first refrigerant pump and an evaporator, the evaporator comprises a back plate, and the back plate is attached to the cabinet to be cooled which is arranged in the room of the data center,
wherein a liquid inlet of the first gas-liquid separator is connected to the liquid refrigerant outlets of the first condenser and the second condenser, respectively,
a liquid outlet of the first gas-liquid separator is connected to an inlet of the first refrigerant pump, and an outlet of the first refrigerant pump is connected to an inlet of the back plate,
a gas inlet of the first gas-liquid separator is connected to an outlet of the back plate, and a gas outlet of the first gas-liquid separator is connected to the inlets of the first compressor and the second compressor, respectively;
wherein the indoor module further comprises a second gas-liquid separator and a second refrigerant pump,
wherein a liquid inlet of the second gas-liquid separator is connected to the liquid refrigerant outlets of the first condenser and the second condenser, respectively,
a liquid outlet of the second gas-liquid separator is connected to an inlet of the second refrigerant pump, and an outlet of the second refrigerant pump is connected to the inlet of the back plate,
a gas inlet of the second gas-liquid separator is connected to the outlet of the back plate, and a gas outlet of the second gas-liquid separator is connected to the inlets of the first compressor and the second compressor, respectively.