Self-circulating submerged jet phase-change liquid-cooling heat dissipation device inside the blade server shell

Abstract

This application discloses a self-circulating submerged jet phase-change liquid-cooled heat dissipation device inside the blade server shell. The liquid-cooled heat dissipation device includes: a refrigerant delivery device is arranged at the bottom of the cavity, connected to the liquid inlet end of the submerged jet device, and is used to turn the cavity The liquid refrigerant at the bottom of the body is transported to the submerged jet device; the submerged jet device is fixed on the side wall of the cavity and installed on the opposite side of the heating element. The side wall of the submerged jet device is provided with multiple upwardly inclined jet nozzles, and multiple jets The nozzles are respectively connected to a plurality of flow channel branches that are divided step by step in the knife shell flow channel. The knife shell flow channel is connected to the refrigerant delivery device. The liquid refrigerant ejected from the jet nozzle hits the heating element, and the gap between the jet nozzle hole and the heating element The spacing is a preset multiple of the diameter of the jet orifice. Through the technical solution in this application, the liquid refrigerant that has not undergone phase change in the blade housing is directly sprayed onto the heating element through the jet nozzle, taking away the heat generated by the heating element, and improving the heat dissipation performance of the liquid-cooled server.

Description

technical field [0001] The present application relates to the technical field of submerged liquid cooling servers, and in particular, to a submerged jet phase change liquid cooling device inside a blade server shell. Background technique [0002] The heat dissipation principle of the liquid-cooled server is to use the working fluid as an intermediate heat transfer medium, and transfer the heat from the hot zone to the distant place for cooling. Since the specific heat of liquid is much larger than that of air, and the heat dissipation rate is much higher than that of air, the cooling efficiency is much higher than that of air cooling. [0003] The traditional immersion liquid-cooled server submerges the server motherboard in the server blade housing with liquid refrigerant. During the data processing of the server, the heating element on the motherboard heats up. When the temperature of the heating element is higher than the boiling point of the refrigerant When the liquid ...

AI Technical Summary

Problems solved by technology

[0004] At present, the heat flux density of supercomputer heating elements has been further increased, and the arrangement of heating elements is becoming more and more dense. Since the boiling bubbles hinder the direct contact between the liquid refrigerant and the surface of the heat source, it is impossible to transfer heat efficiently.

Bubbles generated solely by immersion refrigerant boiling cannot take away more heat, and cannot maintain the temperature of the heating element below the high temperature upper limit of the heating element, which may cause the heating element to burn out

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