Cold plate and refrigerating system with same

Abstract

The invention provides a cold plate and a refrigerating system. The cold plate comprises an inlet pipe, an outlet pipe and a multi-layer entity formed by combining plates based on a multi-layer thin plate, wherein the multi-layer entity sequentially comprises at least one upper cover plate piece, at least one upper chamber plate piece, at least one middle plate piece, at least one lower chamber plate piece and at least one heat conduction plate piece from top to bottom, the upper chamber plate piece forms a hollow flow storage chamber, the middle plate piece forms a slender throttling groove channel, and the lower chamber plate piece forms a hollow evaporation chamber. The refrigerating system comprises the cold plate, a compressor, a condenser, a condensing fan, a connecting pipeline, a refrigerant, a clamping device and the like. When the compressor works, the high-pressure liquid refrigerant enters a liquid storage chamber through the inlet pipe, is throttled and depressurized through the throttling groove channel, generates the spray jet flow in the evaporation chamber, impacts the heat conduction plate piece and takes away heat of a heating element in contact with a lower surface of the heat conduction plate piece. The cold plate is advantaged in that the cold plate is compact in structure and high in heat flux density, and a heating element can be cooled to be below the environment temperature.

Description

technical field [0001] The invention provides a cold plate and a vapor compression refrigeration system based on the cold plate, belonging to the field of heat transfer and refrigeration. Background technique [0002] A cold plate refers to a heat exchanger in which only one fluid participates in heat exchange, and is usually used in the field of heat dissipation for electronic equipment. The cold plate is usually made of metal with good heat conduction, and a cooling medium is passed inside it. When in use, the surface of the cold plate is in direct contact with the surface of the heating element. After the heating element transfers heat to the cold plate through heat conduction, the cold plate will The heat is transferred to the internal cooling medium in the form of convection. After absorbing the heat, the temperature of the cooling medium rises and flows out of the cold plate. The cooling medium cools down outside the cold plate and then returns to the cold plate for re...

AI Technical Summary

Problems solved by technology

However, the existing jet cooling technology usually can only maintain the temperature of the cooled element above the ambient temperature, and in some occasions where the temperature of the cooled element needs to be lower than the ambient temperature, it seems unable to do what it wants.

In addition, the higher the pressure in front of the micro-nozzle, the better the atomization effect of the jet. The existing jet cooling schemes all use pumps to pressurize the cooling medium, and the boosting capacity of the pump is higher than that of the compressor. The pressure capacity is very limited, which limits the further improvement of the jet cooling effect

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