HEAT TRANSFER MEMBER AND COOLING DEVICE HAVING HEAT TRANSFER MEMBER

• Main Authors: TORATANI TOMOAKI, IWANO YUKI, SORIMACHI MASATO
• Format: Patent
• Language: English; Japanese
• Published: 02.09.2021
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; 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; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MECHANICAL ENGINEERING; PRINTED CIRCUITS; SEMICONDUCTOR DEVICES; WEAPONS

To provide a heat transfer member with which it is possible to improve efficiency of delivering/receiving latent heat when a first coolant is changed from a liquid phase to a gaseous phase and thereby increase heat transfer efficiency, and a cooling device including such a heat transfer member.SOLUTION: There is provided a heat transfer member 10 for transferring heat from a heat generating element 4 to a first coolant R1 (L) in a liquid phase which is sealed in below an internal space S of a container 30 and thereby heating and boiling the first coolant R1 and causing the phase of the first coolant R1 to change from the liquid phase to a gaseous phase. The heat transfer member 10 includes a raised part 11 which is raised upward from an underside 11a adhered to an inner face 31a of bottom 31 of the container 30, and a contact area increasing part 12 for increasing a contact area with the first coolant R1 is formed in at least a portion of top face 11b of the raised part 11. A contour shape of the raised part 11 exhibits a substantially circular shape at least as seen in one cross section when cut in a plane passing through a maximum thickness position 11c of the raised part 11 and including a thickness direction of the raised part 11.SELECTED DRAWING: Figure 1 【課題】第１冷媒を液相から気相に相変化させた際の潜熱の受け渡し効率を向上させて熱伝達率を高めることを可能にした伝熱部材と、この伝熱部材を有する冷却装置を提供する。【解決手段】伝熱部材１０は、発熱体４からの熱を、コンテナ３０の内部空間Ｓの下部に封入された液相の第１冷媒Ｒ１（Ｌ）に伝えることで第１冷媒Ｒ１を加熱・沸騰させ、第１冷媒Ｒ１を液相から気相に相変化させる伝熱部材１０において、伝熱部材１０は、コンテナ３０の底部３１の内面３１ａに固着される下面１１ａから上方に向かって隆起した隆起部１１を有し、隆起部１１の上面１１ｂの少なくとも一部に、第１冷媒Ｒ１との接触面積を増大させる接触面積増大部１２が形成されており、かつ、隆起部１１の輪郭形状は、隆起部１１の最大厚さ位置１１ｃを通り、隆起部１１の厚さ方向を含む平面で、切断したときの少なくとも一つの断面で見て、略楕円形状を有する。【選択図】図１