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CN-122028384-A - Liquid cooling device, control method, control system, and readable storage medium

CN122028384ACN 122028384 ACN122028384 ACN 122028384ACN-122028384-A

Abstract

The invention discloses a liquid cooling device, a control method, a control system and a readable storage medium, relates to the field of heat dissipation, and belongs to heat exchange devices in strategic emerging industry classification and international patent classification. The liquid cooling device comprises a first flow path, a second flow path, a first pressure regulating device, a back pressure pump and at least one heat exchange component. The second flow path communicates with the first flow path and is configured to receive fluid after passing through the heat exchange assembly. The first pressure regulating device is mounted to the first flow path. The back pressure pump is mounted to the first flow path. Each heat exchange assembly comprises a first branch, a second branch, a heat exchanger, a liquid supply pump and a second pressure regulating device. The second branch is positioned downstream of the first branch, the heat exchanger is arranged between the first branch and the second branch, the liquid supply pump is positioned between the first branch and the heat exchanger, and the second pressure regulating device is communicated with the first branch and is positioned upstream of the liquid supply pump. The scheme is flexible to adjust.

Inventors

  • WANG YANJIE
  • ZHOU JIANGFENG
  • JIANG GUOFAN

Assignees

  • 珠海格力电器股份有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (16)

  1. 1. A liquid cooling apparatus, comprising: a first flow path (1) configured to provide a fluid; a second flow path (2) communicating with the first flow path (1) and configured to receive the fluid exiting from the heat exchange assembly (5); a first pressure regulating device (3) mounted to the first flow path (1); a back pressure pump (4) mounted on the first flow path (1) and located upstream of the first pressure regulating device (3), and At least one heat exchange assembly (5), each heat exchange assembly (5) comprising a first branch (51), a second branch (52), a heat exchanger (53), a liquid supply pump (54) and a second pressure regulating device (55); wherein the second branch (52) is located downstream of the first branch (51), the heat exchanger (53) is arranged between the first branch (51) and the second branch (52) and is in communication with both the first branch (51) and the second branch (52), the liquid supply pump (54) is located between the first branch (51) and the heat exchanger (53) and is in communication with both, and the second pressure regulating device (55) is in communication with the first branch (51) and is located upstream of the liquid supply pump (54).
  2. 2. The liquid cooling device according to claim 1, wherein each heat exchange assembly (5) further comprises a switching valve (56), the switching valve (56) being installed between the second pressure regulating device (55) and the second branch (52) to control the connection and disconnection between the second pressure regulating device (55) and the second branch (52).
  3. 3. Liquid cooling device according to claim 1, characterized in that the first pressure regulating device (3) comprises an expansion tank and/or the second pressure regulating device (55) comprises an expansion tank.
  4. 4. The liquid cooling device according to claim 1, characterized in that the volume of the first pressure regulating device (3) is larger than the volume of the second pressure regulating device (55).
  5. 5. The liquid cooling device according to claim 1, wherein the number of heat exchanging assemblies (5) is plural, and each heat exchanging assembly (5) is arranged in parallel to the first flow path (1).
  6. 6. The liquid cooling apparatus according to claim 1, wherein the set back pressure of each of the second pressure adjusting devices (55) is the same.
  7. 7. The liquid cooling apparatus according to claim 1, further comprising: A pressure detecting element (6) mounted to the second flow path (2) to detect a fluid pressure, and/or, A flow monitoring element (7) mounted on the second flow path (2) to detect the flow rate of the return liquid and/or, And a temperature monitoring element (8) which is installed on the second flow path (2) to detect the temperature of the liquid return.
  8. 8. The liquid cooling apparatus according to claim 1, further comprising: And a user heat load unit (9) mounted on the second flow path (2) and the first flow path (1).
  9. 9. The liquid cooling device control method is characterized by comprising the following steps: starting the liquid cooling device according to any one of claims 1-8; A second pressure regulating device (55) and a second branch (52) of the liquid cooling device are conducted; judging the fluid pressure of the second flow path (2) and a first set back pressure value, wherein the first set back pressure value is a preset value; If the fluid pressure of the second flow path (2) is greater than or equal to the first set back pressure value, disconnecting a second pressure regulating device (55) and a second branch (52) of the liquid cooling device; judging the inlet pressure of the liquid supply pump (54) of each heat exchange assembly (5) and a second set back pressure value, wherein the second set back pressure value is a preset value; And if the inlet pressure of the liquid supply pump (54) is greater than or equal to the second set back pressure value, starting the liquid supply pump (54).
  10. 10. The liquid cooling apparatus control method according to claim 9, wherein if the fluid pressure of the second flow path (2) is smaller than the first set back pressure value, the back pressure pump (4) is turned on to replenish the second flow path (2).
  11. 11. The liquid cooling apparatus control method according to claim 10, further comprising the steps of: and continuously detecting the fluid pressure of the second flow path (2) after fluid supplementing, closing the back pressure pump (4) if the fluid pressure of the second flow path (2) is greater than or equal to the first set back pressure value, and otherwise, continuously supplementing the fluid to the second flow path (2) by the back pressure pump (4).
  12. 12. The liquid cooling apparatus control method according to claim 9, wherein after a set period of time for which the second pressure adjusting device (55) and the second branch (52) of the liquid cooling apparatus are turned on, the second pressure adjusting device (55) and the second branch (52) of the liquid cooling apparatus are turned off.
  13. 13. The liquid cooling apparatus control method according to claim 9, wherein the inlet pressure of the liquid supply pump (54) of each heat exchange unit (5) and the second set back pressure value are determined; the liquid supply pump (54) of the heat exchange assembly (5) is turned on under the condition that the inlet pressure of the liquid supply pump (54) of the heat exchange assembly (5) is greater than or equal to a second set back pressure value.
  14. 14. The liquid cooling apparatus control method according to claim 13, further comprising the step of: The liquid supply pump (54) of the heat exchange assembly (5) is turned off and a second pressure regulating device (55) of the heat exchange assembly (5) is in communication with the second branch (52) to increase the inlet pressure of the liquid supply pump (54) by the second pressure regulating device (55) such that the inlet pressure of the liquid supply pump (54) of the heat exchange assembly (5) is greater than or equal to a second set back pressure value.
  15. 15. A liquid cooling apparatus control system, comprising: Memory, and A processor coupled to the memory, the processor configured to execute the liquid cooling device control method of any one of claims 9-14 based on instructions stored in the memory.
  16. 16. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the liquid cooling apparatus control method according to any one of claims 9 to 14.

Description

Liquid cooling device, control method, control system, and readable storage medium Technical Field The invention relates to the field of heat dissipation, in particular to a liquid cooling device, a control method, a control system and a readable storage medium. Background With the rapid development of chip technology, high temperature resistant chips have gradually entered engineering application stages. Under the background, electronic equipment in scenes such as large antennas, supercomputers and the like has put forward new demands on the liquid cooling device, namely, the liquid cooling device is supplied at the temperature of 30 ℃ below the original low temperature, and the liquid cooling device is supplied at the temperature of 65 ℃ below. This change in demand makes the liquid cooling device no longer need to cool the coolant at a low temperature by the compressor, but directly cool the coolant at a normal temperature by the fan, which is simply referred to as normal cooling. In order to meet the requirements of different heat dissipation capacities of electronic equipment, the liquid cooling device adopts a modularized design. The heat exchange quantity of a single heat exchange assembly is 30 kW-60 kW, and the heat exchange quantity of 480kW (calculated according to 8 heat exchange assemblies) can be output at most through parallel combination of a plurality of heat exchange assemblies. For a normally-cooled liquid cooling device, the normal operation of a liquid supply pump is the basic condition for the stable operation of the liquid supply pump. According to the working characteristics of the liquid supply pump, the back pressure value of the suction inlet of the liquid supply pump must be ensured to be higher than the cavitation allowance, otherwise, the liquid supply pump can generate cavitation phenomenon in the operation process, so that the impeller inside the pump is damaged, and finally the liquid supply pump is invalid, and the operation of the whole liquid cooling device is influenced. Here, the unit of the cavitation margin is meter, and the back pressure value is higher than the cavitation margin thereof, specifically, the number of meters corresponding to the back pressure value is higher than the cavitation margin. In order to ensure the normal circulation of the cooling liquid in the multi-module parallel system, two liquid supply modes, namely concentrated liquid supply and distributed liquid supply, are adopted at present. The centralized liquid supply mode needs to be provided with 1-2 large liquid supply pumps (independent liquid supply pumps are not arranged in a single heat exchange assembly), and the back pressure value of the liquid supply pump suction inlet is fixed by 1 liquid adding and supplementing device. The mode has the obvious defects that the liquid supply pump is huge in size, the noise of a single liquid supply pump is high (generally more than 80dB (A)), and in addition, the whole liquid cooling device is stopped directly once the single liquid supply pump fails due to the small number of the liquid supply pumps, so that the reliability is poor. The inventor finds that at least the following problems exist in the prior art, namely, the problem of centralized liquid supply is solved well by a distributed liquid supply mode. This mode all sets up 1 small-size liquid feed pump in every heat exchange component, for corresponding heat exchange component liquid feed specially, even if the liquid feed pump of other modules breaks down, also can not influence this heat exchange component's normal operating, has effectively promoted the reliability of liquid cooling device. However, the distributed liquid supply also brings new problems that the pressure of the suction inlet of the liquid supply pump in each heat exchange assembly is different due to uneven liquid distribution of the main pipe, the back pressure value of part of the heat exchange assemblies is possibly lower than the cavitation allowance of the liquid supply pump, and the failure risk of the liquid supply pump exists. Disclosure of Invention The invention provides a liquid cooling device, a control method, a control system and a readable storage medium, which are used for enabling the liquid supply back pressure of a dispersion type liquid cooling device to meet the requirement. The embodiment of the invention provides a liquid cooling device, which comprises: A first flow path configured to provide a fluid; A second flow path in communication with the first flow path and configured to receive the fluid after passing through the heat exchange assembly; A first pressure regulating device mounted to the first flow path; a back pressure pump mounted in the first flow path and upstream of the first pressure regulator, and At least one heat exchange assembly, each heat exchange assembly comprising a first branch, a second branch, a heat exchanger, a liquid supply pump and a second pressure regulating device