Flat-plate-type water sublimation cold plate for aerospace radiation

Abstract

The invention provides a flat-type-type water sublimation cold plate for aerospace radiation. The flat-type-type water sublimation cold plate is composed of a cover plate, a teflon cushion block, a sealing ring, a perforated plate, a metal foam or micropore fin, a base body, a water supply channel sealing pressing plate, a water supply pipeline, a connecting bolt and a lock nut. A water supply channel is formed in the bottom face of the base body in the circumferential direction. The installation space matched with the metal foam or micropore fin, the perforated plate and the sealing ring is reserved in the upper surface of the base body. The metal foam or micropore fin is located inside the installation space, the perforated plate is located above the metal foam or micropore fin, and the metal foam or micropore fin is compressed onto the base body through welding of the perforated plate and the base body. A plurality of through holes are formed in the contact face of the base body and the metal foam or micropore fin in the thickness direction. The through holes are communicated with the water supply channel. A reinforcing rib and an air outlet channel are arranged on the cover plate. According to the flat-type-type water sublimation cold plate for aerospace radiation, the triple-point characteristics of water working media are utilized for sublimating the water working media through the structural design, and therefore the radiating function is achieved.

Description

technical field [0001] The invention belongs to the technical field of spacecraft thermal control, and in particular relates to a flat water sublimation cold plate for aerospace heat dissipation. Background technique [0002] In the thermal control design of aerospace models, some short-term or one-time working parts with high heat consumption are often faced. The current thermal control ideas are nothing more than the following three: Passive heat dissipation plus compensation method: that is, to set the heat dissipation requirements of the components during operation Sufficient passive heat dissipation means consume power for heating compensation when the equipment is not working; phase change energy storage method: use the phase change of phase change materials to absorb part or most of the heat loss of components when they are working; active thermal control: use fluid circuits, Spray cooling and other means to collect and dissipate heat flow. [0003] With the increasi...

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Problems solved by technology

[0003] With the increasing compactness of spacecraft and the increasing heat consumption of components, it is entirely possible that none of the above technologies can meet the requirements. The shape cannot provide enough heat dissipation area or there is not enough compensation heating energy budget; the heat transfer efficiency of the phase change energy storage method is low so that the temperature requirements of the components cannot be met; the weight of the system does not support the use of complex active thermal control technology

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