HEAT EXCHANGER, LOOP TYPE HEAT PIPE, COOLING DEVICE, AND ELECTRONIC APPARATUS

To provide a heat exchanger, a loop type heat pipe, a cooling device, and an electronic apparatus such that an elastic wick and a housing can be sufficiently sealed.SOLUTION: An evaporator 2 as a heat exchanger comprises an inflow part that a liquid-phase working fluid flows in, a discharge part which discharges a working fluid having been vaporized by receiving heat from outside, and a wall part 11a which has a partition part partitioning off the inflow part and the discharge part, and internally has an elastic wick 15 that the liquid-phase working fluid permeates. The wall part 11a has a liquid communication part 10 that the liquid-phase working fluid passes through, and the elastic wick 15 is held between the wall part 11a and an opposite wall part 14 facing the wall part to block the liquid communication part 10. Then a seal region 15b abutting on a circumference of the liquid communication part 10 of the wall part of the elastic wick 15 is made larger in elastic deformation quantity than a liquid receiving region 15a facing the liquid communication part 10.SELECTED DRAWING: Figure 4 【課題】弾性ウィックと筐体とのシールを十分に行うことができる熱交換器、ループ型ヒートパイプ、冷却装置及び電子機器を提供する。【解決手段】熱交換器たる蒸発器２は、液相の作動流体が流入する流入部と、外部からの受熱により気化した作動流体を排出する排出部と、流入部と前記排出部とを仕切る部分を有する壁部１１ａとを備え、液相の作動流体が浸透する弾性ウィック１５を内部に有する。壁部１１ａは液相の作動流体が通過する液連通部１０を有し、弾性ウィック１５は、液連通部１０を塞ぐように、壁部１１ａと壁部に対向する対向壁部１４とで挟持されている。そして、弾性ウィック１５の壁部の液連通部１０の周囲に当接するシール領域１５ｂの弾性変形量が、液連通部１０に対向する受液領域１５ａの弾性変形量よりも大きくしている。【選択図】図４