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Two-phase cooling system multi-parallel branch stabilization device and method

A technology of cooling system and stabilizing device, applied in circuits, semiconductor devices, lighting and heating equipment, etc., can solve the problems of unbalanced heat load, unstable flow, uneven flow distribution, etc., and achieve the effect of improving robustness

Active Publication Date: 2022-03-08
CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a stabilizing device and method for multi-parallel branches of a two-phase cooling system in view of the deficiencies of the prior art, which can solve the thermal load of multi-parallel branches of a two-phase cooling system through functions such as inlet throttling and flow regulation. Imbalance leads to uneven flow distribution and flow instability, ensuring that each branch will not be burned out due to excessive temperature

Method used

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  • Two-phase cooling system multi-parallel branch stabilization device and method
  • Two-phase cooling system multi-parallel branch stabilization device and method
  • Two-phase cooling system multi-parallel branch stabilization device and method

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Embodiment 1

[0054] An embodiment of the present invention is a device and method for stabilizing multiple parallel branches of a two-phase cooling system, which are used to solve the instability problem of multiple parallel branches of the two-phase cooling system.

[0055] like figure 1 As shown, the multi-parallel branch stabilization device of the two-phase cooling system in this embodiment includes a control unit 1 , a flow regulating unit 2 , a monitoring unit 3 , a cold plate 5 with a heat load, and a pipeline 6 . The composition of each branch is the same, and each branch includes a flow regulating unit 2, a monitoring unit 3, and a cold plate 5 with heat load.

[0056] The control unit 1 is used to process the flow and temperature monitoring signals on each branch, determine the flow control information corresponding to the temperature information or temperature change information from the preset control table according to the flow and temperature data, and control the flow adjust...

Embodiment 2

[0067] Another embodiment of the present invention has basically the same structure as Embodiment 1, except that a resistance adjustment element 4 is also provided on the liquid supply port of each branch.

[0068] like image 3 As shown, the multi-parallel branch stabilization device of the two-phase cooling system in this embodiment includes a control unit 1 , a flow regulating unit 2 , a monitoring unit 3 , a resistance regulating element 4 , a cold plate with heat load 5 , and a pipeline 6 . The composition of each branch is the same, and each branch includes a flow regulating unit 2, a monitoring unit 3, a resistance regulating element 4, and a cold plate 5 with heat load.

[0069] The resistance adjustment element 4 of each branch corresponds to the flow adjustment unit 2 .

[0070] The resistance adjustment element 4 is used to pre-adjust the single-phase flow resistance of each branch, so that the single-phase flow resistance on each branch is much greater than the ch...

Embodiment 3

[0073] Another embodiment of the present invention has basically the same structure as Embodiment 2, except that instead of using a flow regulating unit to adjust the two-phase working fluid flow in each branch, the liquid supply in each branch On the mouth, there is a resistance adjustment element 4, which is used to pre-adjust the single-phase flow resistance of each branch, so that the single-phase flow resistance on each branch is much greater than the change in the resistance of the two-phase working medium due to slight thermal load changes. Thereby reducing flow fluctuations in the two-phase cooling system caused by small resistance changes.

[0074] like Figure 4As shown, the multi-parallel branch stabilization device of the two-phase cooling system in this embodiment includes a monitoring unit 3 , a resistance adjustment element 4 , a cold plate 5 with a heat load, and a pipeline 6 . The composition of each branch is the same, and each branch includes a monitoring u...

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Abstract

The invention belongs to the technical field of cooling equipment, and discloses a multi-parallel branch stabilization device and method for a two-phase cooling system. The device includes a control unit, a monitoring unit for each branch, a flow adjustment unit, and a cold plate with heat load , and the pipeline: the control unit determines the corresponding driving control signal for adjusting the flow regulating unit according to the temperature on the branch; the monitoring unit collects the flow and temperature on the branch, and feeds back to the control unit; The flow rate of the two-phase cooling working medium of the circuit; the cold plate is provided with a two-phase cooling flow channel; the pipeline connects the flow regulating unit, the monitoring unit, and the cold plate with heat load in each branch to form a parallel two-phase working medium passage. Adopting the present invention can solve the uneven flow distribution and flow instability caused by the unbalanced heat load of multiple parallel branches of the two-phase cooling system through functions such as inlet throttling and flow adjustment, and ensure that each branch is not blocked due to excessive temperature. burn out.

Description

technical field [0001] The invention belongs to the technical field of cooling equipment, and in particular relates to a multi-parallel branch stabilization device and method for a two-phase cooling system. Background technique [0002] With the continuous improvement of chip technology and performance, the heat flux and heat consumption of chips also increase. Miniaturization, multi-point heat sources, high heat consumption, and high heat flux have become the main challenges of system thermal management. Due to its small size and high heat transfer efficiency, two-phase flow heat dissipation technology has become one of the key research heat dissipation methods in the industry. [0003] In a two-phase cooling system, if multiple parallel branches have the same heat load, then the amount of the two-phase cooling medium on each branch from liquid to gas (gasification rate) is basically the same, and the flow resistance on the branches is basically the same. System traffic re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D15/02F28D15/06H01L23/427
CPCF28D15/02F28D15/06H01L23/427
Inventor 钱吉裕陈琦李力吴进凯
Owner CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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