GREAT-POWER FLAT EVAPORATOR RESISTING AGAINST POSITIVE PRESSURE, PROCESSING METHOD THEREFOR, AND FLAT-PLATE LOOP HEAT PIPE BASED ON EVAPORATOR

摘要

The invention provides a positive-pressure-resistant high-power flat evaporator, processing methods thereof and a flat loop heat pipe based on the evaporator, and belongs to the technical field of spacecraft structures. The evaporator comprises a housing, and reinforcing ribs and a capillary wick which are positioned inside the housing, and the arrangement of the reinforcing ribs can ensure that the strength of the whole evaporator meets the requirement for positive pressure resistance. The capillary wick is composed of four parts, namely, an evaporating wick, a heat insulating wick, a sealing wick and a transfer wick. Through the large permeability of the transfer wick, liquid supply with low flow resistance can be realized, the heat transfer capability of the loop heat pipe is greatly improved, and the problems of long liquid supply path and large flow resistance caused by a large-area evaporator are solved. The transfer wick and the heat insulating wick with low thermal conductivity can reduce heat leakage of the evaporator to a reservoir, and also have good permeability, so as to reduce the flow resistance in the capillary wick, and improve the operation stability of a product.