公开(公告)号：US11168945B2

公开(公告)日：2021-11-09

申请号：US16513037

申请日：2019-07-16

Applicant: BEIJING INSTITUTE OF SPACECRAFT SYSTEM ENGINEERING

Inventor： Hongxing Zhang ,  Guanglong Man ,  Guoguang Li ,  Jingtuzhi Li

IPC: F28D15/04 ,  B22F3/14 ,  B22F5/10 ,  F28D15/02

Abstract: A hot-press sintering method to prepare a loop heat pipe evaporator includes: putting a shell of the evaporator into a mould, uniformly and compactly filling corresponding positions in the mould with material powders of an evaporation core, a heat insulation core and a transmission core, applying a pressure high enough to tightly fit the evaporation core and the transmission core to the shell at corresponding sintering temperatures of powder materials for the evaporation core and the transmission core, carrying out hot-press sintering for molding, carrying out cooling after metallurgically bonding the powder materials of the evaporation core and the transmission core, and carrying out demolding to obtain the loop heat pipe evaporator, wherein the mould is provided with corresponding structures shaped like steam channels on positions where the evaporation core is provided with the steam channels.

公开(公告)号：US11656034B2

公开(公告)日：2023-05-23

申请号：US16831723

申请日：2020-03-26

Applicant: BEIJING INSTITUTE OF SPACECRAFT SYSTEM ENGINEERING

Inventor： Guoguang Li ,  Hongxing Zhang ,  Guanglong Man ,  Shuai Wang ,  Dongxiao Liu

IPC: F28D15/04

CPC classification number: F28D15/04

Abstract: The present disclosure provides a positive-pressure-withstanding high-power flat evaporator, processing methods thereof and a flat loop heat pipe including the evaporator. The evaporator includes 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 is capable of withstanding positive pressure. 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.