Immersion liquid cooling system and control method thereof, and data center

An immersion liquid cooling system, comprising:

• a liquid cooling device and two refrigerating devices, wherein the liquid cooling device and the two refrigerating devices exchange heat through a heat exchanger;
• the liquid cooling device comprises a liquid cooling cabinet and two cooling capacity distribution units;
• wherein the cooling capacity distribution unit comprises the heat exchanger and a liquid cooling circulation pump, a first medium outlet of the heat exchanger communicates with an inlet-liquid port of the liquid cooling cabinet, a first medium inlet of the heat exchanger communicates with a return-liquid port of the liquid cooling cabinet, the liquid cooling circulation pump is connected in series between the heat exchanger and the liquid cooling cabinet;
• the two refrigerating devices respectively correspond to the two cooling capacity distribution units;
• the refrigerating device comprises a refrigerating circulation pump, a condenser, and a throttling apparatus that are sequentially connected in series between a second medium outlet and a second medium inlet of the heat exchanger, and a compressor connected in parallel with the refrigerating circulation pump, wherein one of the compressor and the refrigerating circulation pump is selected to operate.

A data center, comprising a server room and an immersion liquid cooling system;

• wherein the immersion liquid cooling system comprises:
• a liquid cooling device and a refrigerating device, the liquid cooling device and the refrigerating device exchange heat through a heat exchanger;
• the liquid cooling device comprises a liquid cooling cabinet and a cooling capacity distribution unit;
• wherein the cooling capacity distribution unit comprises the heat exchanger and a liquid cooling circulation pump, a first medium outlet of the heat exchanger communicates with an inlet-liquid port of the liquid cooling cabinet, a first medium inlet of the heat exchanger communicates with a return-liquid port of the liquid cooling cabinet, the liquid cooling circulation pump is connected in series between the heat exchanger and the liquid cooling cabinet;
• the refrigerating device comprises a refrigerating circulation pump, a condenser, and a throttling apparatus that are sequentially connected in series between a second medium outlet and a second medium inlet of the heat exchanger, and a compressor connected in parallel with the refrigerating circulation pump, wherein one of the compressor and the refrigerating circulation pump is selected to operate;
• wherein the liquid cooling device of the immersion liquid cooling system is arranged inside the server room, the refrigerating device of the immersion liquid cooling system is arranged outside the server room, the liquid cooling device and the refrigerating device are connected via a pipeline passing through a wall of the server room.