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Two-phase liquid cooling microchannel, manufacturing method thereof and server

A micro-channel, phase-liquid technology, applied in cooling/ventilation/heating renovation, electrical equipment structural parts, electrical components, etc. Avoid drastic increases in gas flow rate and pressure, improve stability and controllability, avoid backflow and gas lock effects

Pending Publication Date: 2022-03-01
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the pressure at the end of the two-phase microchannel cold plate process is too high, the gas phase will flow back and form an air lock, which will induce pressure oscillation in the two-phase flow system, resulting in deterioration of heat transfer and loss of system pressure control

Method used

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  • Two-phase liquid cooling microchannel, manufacturing method thereof and server
  • Two-phase liquid cooling microchannel, manufacturing method thereof and server
  • Two-phase liquid cooling microchannel, manufacturing method thereof and server

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 1-5 As shown, the first embodiment provides a two-phase liquid-cooled microchannel, including a microchannel body 100, figure 1 The right side of the middle is the entrance 101 of the microchannel body, and the left side is the outlet 102 of the microchannel body. Two sets of nozzles 300 (or other flow dividers) distributed in parallel are arranged at the inlet 101 of the microchannel body for the cooling liquid to flow in.

[0037] A porous structure 200 is provided in the microchannel body 100 , the cooling liquid flows into the porous structure 200 from the microchannel body inlet 101 , and then leaves from the microchannel body outlet 102 .

[0038] In this embodiment, the height of the porous structure 200 decreases from the microchannel body inlet 101 to the outlet 102, and the upper surface curve of the porous structure 200 is a parabola, so that the upper gas phase space in the microchannel body 100 increases from the microchannel body inlet 101...

Embodiment 2

[0041] Such as Figure 6 As shown, the second embodiment provides a two-phase liquid-cooled microchannel, including a microchannel body 100, Figure 6 The right side of the middle is the entrance 101 of the microchannel body, and the left side is the outlet 102 of the microchannel body. Two sets of nozzles 300 (or other flow dividers) distributed in parallel are arranged at the inlet 101 of the microchannel body for the cooling liquid to flow in.

[0042] A porous structure 200 is provided in the microchannel body 100 , the cooling liquid flows into the porous structure 200 from the microchannel body inlet 101 , and then leaves from the microchannel body outlet 102 .

[0043] In this embodiment, the height of the porous structure 200 decreases from the microchannel body inlet 101 to the outlet 102, and the upper surface curve of the porous structure 200 is a parabola, so that the upper gas phase space in the microchannel body 100 increases from the microchannel body inlet 101...

Embodiment 3

[0049] Such as Figure 6 As shown, the second embodiment provides a two-phase liquid-cooled microchannel, including a microchannel body 100, Figure 6 The right side of the middle is the entrance 101 of the microchannel body, and the left side is the outlet 102 of the microchannel body. Two sets of nozzles 300 (or other flow dividers) distributed in parallel are arranged at the inlet 101 of the microchannel body for the cooling liquid to flow in.

[0050] A porous structure 200 is provided in the microchannel body 100 , the cooling liquid flows into the porous structure 200 from the microchannel body inlet 101 , and then leaves from the microchannel body outlet 102 .

[0051] In this embodiment, the height of the porous structure 200 decreases from the microchannel body inlet 101 to the outlet 102, and the upper surface curve of the porous structure 200 is a parabola, so that the upper gas phase space in the microchannel body 100 increases from the microchannel body inlet 101...

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Abstract

The invention relates to the field of two-phase liquid cooling microchannels, and particularly discloses a two-phase liquid cooling microchannel and a manufacturing method thereof, and a server, the two-phase liquid cooling microchannel comprises a microchannel body, a porous structure is arranged in the microchannel body, the height of the porous structure is gradually reduced from an inlet to an outlet of the microchannel body, and the curve of the upper surface of the porous structure is a parabola. And the gas phase space in the micro-channel is gradually increased from the inlet to the outlet. The phenomenon that the gas-phase flow velocity and the pressure are sharply increased can be avoided, gas blockage is eliminated, pressure oscillation of two-phase flow is reduced, heat transfer is enhanced, and the stability of the system is improved.

Description

technical field [0001] The invention relates to the field of two-phase liquid-cooled microchannels, in particular to a two-phase liquid-cooled microchannel, a manufacturing method thereof, and a server. Background technique [0002] With the development of data centers, in order to meet the ever-increasing demand for computing power, the power density of a single cabinet is getting higher and higher. When the power density of a single cabinet reaches 20kW, the air-cooled system is close to its cost-effective cooling limit. In this context, the heat dissipation technology of liquid-cooled data centers with low PUE and high heat dissipation density has emerged as the times require. [0003] Two-phase cold plate liquid cooling uses the latent heat of vaporization phase change of the working fluid to quickly remove heat, which undoubtedly has higher cooling efficiency. At the same time, the latent heat of phase change is much greater than the sensible heat, the flow rate of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20
CPCH05K7/208
Inventor 朱欢来
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD