Low-temperature loop heat pipe

Abstract

The invention relates to heat control equipment, and provides a low-temperature loop heat pipe. The low-temperature loop heat pipe comprises an evaporator and a condenser, a liquid outlet of the condenser communicates with a liquid inlet of the evaporator through a liquid pipeline, a gas outlet of the evaporator communicates with a gas inlet of the condenser through a gas pipeline, a first capillary structure is arranged in the liquid pipeline, a liquid absorption core is arranged in the evaporator, one end of the first capillary structure extends into the condenser, the other end of the firstcapillary structure is connected with the liquid absorption core, and a heat insulation transition structure covers the liquid pipeline. According to the heat pipe, the first capillary structure is arranged in the liquid pipeline, a liquid working medium can be conveyed by means of the capillary action of the first capillary structure, the liquid working medium can be continuously provided for the evaporator without the assistance of gravity and extra power consumption, the axial heat leakage of the evaporator can be reduced through the heat insulation transition structure, so that the liquidin the contact area between the evaporator and the liquid pipeline is prevented from being burnt and dried, the liquid working medium is blocked from flowing to the liquid absorption core, and reliable starting and stable running of the low-temperature loop heat pipe are guaranteed.

Description

technical field [0001] The invention relates to thermal control equipment, in particular to a low-temperature loop heat pipe. Background technique [0002] The low-temperature loop heat pipe is a high-efficiency low-temperature heat transfer element, which is mainly used in the fields of spacecraft thermal control, superconducting magnet cooling, and optical device cooling. It can effectively realize long-distance heat transfer between the cold source and the cooled device, Isolate vibration and electromagnetic interference, etc. At present, the traditional loop heat pipe includes an evaporator, a condenser, a gas pipeline and a liquid pipeline, which form a closed loop, and the working fluid filled into the loop is in a liquid state or a gas-liquid two-phase state at room temperature. The mass circulates in the circuit and conducts efficient heat transfer through gas-liquid phase transition. Compared with the traditional loop heat pipe, because the low-temperature loop he...

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Problems solved by technology

[0004] There are some problems and deficiencies in the above technical means: the application environment of the low-temperature loop heat pipe that relies on gravity to start and operate is severely limited, and cannot work in a horizontal state or an anti-gravity state; when setting the secondary evaporator, it is necessary to apply additional heating energy Moreover, the cooling process of the low-temperature loop heat pipe is slow; when the secondary loop is set, additional heating energy consumption is also required, and at the same time, the pipeline of the low-temperature loop heat pipe increases and the structure is complicated

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