著者

林 知生 近藤 義広 豊田 浩之 佐藤 重匡 椿 繁裕

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 (ISSN:21879761)

巻号頁・発行日

vol.83, no.850, pp.16-00580-16-00580, 2017 (Released:2017-06-25)

参考文献数

10

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We have developed the evaluation method for two performance factors to design the thermal connector: Insertion force of thermal grease and thermal conductance. The thermal connector was comprised of a thermal plug and a thermal socket, and the thermal grease which was filled into the gap between the thermal plug and the thermal socket connected the thermal plug and the thermal socket thermally. Firstly, the insertion force was theoretically calculated using the Bingham plastic model for rheology characteristics of the thermal grease and the slip model on the surfaces of the thermal plug and the thermal socket. The calculated results were in good agreement with the experimental results. Secondly, the experimental results of the thermal conductance between the thermal plug and the thermal sockets at the first connection to the 20 times connection were -1 to +26 percent greater than the theoretical value. The reason why some experimental results exceed the theoretical results is the eccentricity between the thermal plug and the thermal socket. In addition, the filling status of the thermal grease in the gap was visualized by ultrasonic testing. The results after the 20 times connections showed there were some voids in the thermal grease and the area of voids was 4 percent of the heat transfer area. Therefore, the thermal conductance was mostly not influenced by the voids. Finally, it was found that the proposed methods to predict the insertion force and thermal conductance were reasonable.

著者

林 知生

出版者

社団法人 日本伝熱学会

雑誌

日本伝熱シンポジウム講演論文集

巻号頁・発行日

vol.2009, pp.317-317, 2009

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高発熱電子機器の冷却に用いる着脱自在な熱コネクタを試作した。試作した熱コネクタは,放熱プラグを受熱ソケットに挿入し,その隙間に熱伝導の良いグリスを充填することにより熱的に良好に接続される。放熱プラグを抜き取る際,グリスは元のグリス溜めに還流する構造となっており,熱コネクタは繰返しの着脱が可能である。本報告では,熱抵抗の目標を満たすための熱コネクタの寸法検討,熱コネクタ挿入の際に必要な力を低減するためのバネを用いたグリス充填構造の検討など,本熱コネクタの設計手法の検討を中心に説明する。