Compact antigravity loop heat pipe

Abstract

The invention relates to the technical field of thermal control equipment, and discloses a compact antigravity loop heat pipe, wherein a liquid pipeline, an evaporator, a gas pipeline and a condenserare sequentially connected to form a loop, and the loop heat pipe further comprises a secondary evaporator; the liquid pipeline and the gas pipeline are of a pipe-in-pipe structure, and the secondaryevaporator is communicated with a condenser pipe of the condenser. According to the compact antigravity loop heat pipe disclosed by the invention, by setting the gas pipeline and the liquid pipeline into the pipe-in-pipe structure, only small pipe space is required between the evaporator and the condenser, the structure is simple, the space occupied by a system is reduced, and the flexible layoutof the system is facilitated; in a low temperature environment, the thermal insulation protection can be more conveniently performed on the outside of the pipeline, thereby greatly saving the system space; by setting the secondary evaporator, auxiliary power is provided for the circulating flow of a working medium in the pipeline, so that the loop heat pipe can be reliably started and operated when the loop heat pipe is in a horizontal state or in an antigravity state.

Description

technical field [0001] The invention relates to the technical field of thermal control equipment, in particular to a compact anti-gravity loop heat pipe. Background technique [0002] A heat pipe is a highly efficient heat transfer device, its heat transfer capacity is one or two orders of magnitude higher than that of metal, and it is called a thermal superconductor. The traditional heat pipe mainly includes a metal shell, capillary structure and working medium. The capillary structure is usually composed of channels or sintered porous structures, and is distributed along the entire length of the heat pipe. Although the structure is simple, the flexibility is poor. With a full capillary structure, the liquid flow resistance is relatively large, and the liquid and gas flow in opposite directions in the same space, and there is a problem of carrying, which affects the further improvement of the heat transfer capacity of the heat pipe. [0003] The loop heat pipe is also a th...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a compact anti-gravity loop heat pipe, which is used to solve or partly solve the problem that there are usually two, three or even more transmission pipelines between the evaporator and the condenser of the existing loop heat pipe, and the structure is complicated. Occupies a larger system space; and many loop heat pipes need the assistance of gravity to operate normally, and the problem of unreliable work in a horizontal state or an anti-gravity state

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