EVAPORATION FACE STRUCTURE OF COOLING DEVICE, ITS MANUFACTURING METHOD, COOLING DEVICE AND HEAT PIPE

• Main Authors: TORATANI TOMOAKI, INAGAKI YOSHIKATSU, AOKI HIROSHI, SORIMACHI MASATO, KAMIKUBO MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2022
• Subjects: BLASTING; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

To provide an evaporation face structure or the like of a cooling device which is remarkably improved in cooling performance by effectively increasing a surface area without largely lowering the heat conductivity of a sintered body layer.SOLUTION: An evaporation face structure of a cooling device 1 of this invention comprises an evaporation part 5 for evaporating a liquid-phase working fluid, and phase-changing it to a gas phase, and a condensation part 7 arranged in a position separated from the evaporation part 5, and phase-changing the gas-phase working fluid to a liquid phase by condensing the gas-phase working fluid at a container 3 having an internal space S into which the working fluid is sealed. A sintered body layer 9 formed by sintering metal particles is arranged at an inner face of the evaporation part 5 of the container 3, the sintered body layer 9 has a sintered aggregation part 15 in which a plurality of minute air gaps 19 are formed at least on a surface, and whose air gap rate is equal to or higher than 50%, and in the sintered aggregation part 15, a plurality of cracked coarse air gaps 17 whose air gap sizes are larger than the minute air gaps 19, and whose air gap rates are 100% are partially formed at least on a surface.SELECTED DRAWING: Figure 1 【課題】本発明は、焼結体層の熱伝導率をさほど低下させずに、表面積を有効に増加させて冷却性能を格段に向上させた、冷却装置の蒸発面構造等を提供する。【解決手段】本発明の冷却装置１の蒸発面構造は、作動流体が封入された内部空間Ｓを有するコンテナ３に、液相の作動流体を蒸発させて気相へと相変化させる蒸発部５と、蒸発部５から離隔した位置に配設され、気相の作動流体を凝縮させて液相へと相変化させる凝縮部７とを備え、コンテナ３の蒸発部５の内面に、金属粒子を焼結して形成した焼結体層９を有し、焼結体層９は、少なくとも表面に複数の微小空隙１９が形成された、空隙率が５０％以上である焼結集合部１５を有し、焼結集合部１５は、少なくとも表面に、微小空隙１９よりも空隙サイズが大きく、かつ空隙率が１００％であるクラック状の複数の粗大空隙１７が部分的に形成されている【選択図】図１