Vapor-liquid diverting type capillary core vapor chamber heat exchanger and preparation method

Abstract

The invention relates to a vapor-liquid diverting type capillary core vapor chamber heat exchanger and a preparation method, and belongs to the technical field of electronic device heat dissipation. The vapor-liquid diverting type capillary core vapor chamber heat exchanger is composed of a vapor cavity, fins and a heat dissipation fan. The vapor-liquid diverting type capillary core vapor chamberheat exchanger is simple in structure, the vapor cavity is filled with an integrally-sintered capillary core, and the capillary core is divided into an upper-layer capillary core and a lower-layer capillary core, wherein a tree-shaped vapor channel is machined in the upper-layer capillary core; phase change working media filling the vapor cavity are boiled and evaporated after absorbing heat, flowto the side wall surface and the upper wall surface of the vapor cavity in the tree-shaped vapor channel in the vapor cavity and are condensed for heat exchange; other capillary core structures except the vapor channel are used for sucking condensate to flow back to a heated area to form a working cycle, the gas-phase working medium and the liquid-phase working medium in the vapor cavity flow inthe vapor channel and the capillary core respectively, the mutual influence in the flowing process of the two phase working media is reduced, vapor is rapidly diffused to the condensation surface forheat exchange favorably, and the condensate flows back to the hot end of the heat exchanger in time so that the heat exchange performance of the vapor chamber heat exchanger can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation for electronic devices, and relates to a capillary soaker heat exchanger and a preparation method thereof, in particular to a gas-liquid two-phase flow radiator with a vapor-liquid shunting function and improved heat exchange effect and preparation method. Background technique [0002] With the continuous advancement of science and technology, the power density of electronic devices is increasing. In order to ensure the reliability of devices, the heat dissipation requirements of electronic devices are getting higher and higher. Aiming at the problem of heat dissipation of electronic devices, the current form of radiator There are many kinds, such as fin type and heat pipe type, etc. Due to the difference in the heat transfer mode inside the radiator, the performance of the fin type radiator is weaker than that of the heat pipe type radiator. Among heat pipe radiators, capillary steam ch...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that during the working process of the existing capillary core soaking plate heat exchanger, the working medium is heated and evaporates to boil, the steam flows along the pores in the capillary core to the condensation surface, and the condensed liquid flows along the capillary suction under the capillary suction. The pores return to the heating surface, and the steam and condensate interfere with each other, which affects the effective distribution and flow of the two, and restricts the working performance of the capillary soaker. A capillary soaker with vapor-liquid separation is proposed. Heater and preparation method, by improving the capillary core structure in the steam chamber, the circulation of the steam-liquid working liquid can be effectively improved, and the heat exchange capacity can be improved

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