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ROTARY JOINT FOR LOW-TEMPERATURE APPLICATION

外国特許コード F120006922
整理番号 S2009-0781
掲載日 2012年10月10日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2010JP059365
国際公開番号 WO 2010/140627
国際出願日 平成22年6月2日(2010.6.2)
国際公開日 平成22年12月9日(2010.12.9)
優先権データ
  • 特願2009-133204 (2009.6.2) JP
発明の名称 (英語) ROTARY JOINT FOR LOW-TEMPERATURE APPLICATION
発明の概要(英語)

A small-sized lightweight rotary joint for low-temperature application. A rotary joint for low-temperature application comprises: a housing (2)

a non-rotation refrigerant pipe (3) provided within the housing (2) and having one end connected to the outside refrigerant source and the other end communicated with a portion to be cooled within a rotary machine

a rotatable rotation member (4) provided within the housing (2), having the refrigerant pipe (3) loosely inserted therethrough, and having one end affixed to the rotation section of the rotary machine

and a cylindrical relative rotation member (5) coaxial with both the refrigerant pipe (3) and the rotation member (4), having an affixed-side member (5a) affixed to the inner surface of the housing (2), and having a rotation-side member (5b) disposed so as to be rotatable inside the affixed-side member (5a). The affixed-side member (5a) is connected to the refrigerant pipe (3) through a refrigerant-pipe extension section (3a), and the rotation-side member (5b) is connected to the rotation member (4) through a rotation-member extension section (4a). The space (7) between the refrigerant pipe (3) and the rotation member (4) and the space (8) between the refrigerant-pipe extension section (3a) and the rotation-member extension section (4a) form a refrigerant region. A seal member (10) is provided between the affixed-side member (5a) and the rotation-side member (5b). A vacuum chamber and a pressure chamber are defined within the housing (2) by the peripheral wall of the refrigerant pipe (3), the refrigerant-pipe extension section (3a), and the affixed-side member (5a) of the relative rotation member (5).

  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGY,
  • KITANO SEIKI CO., LTD,
  • IZUMI, MITSURU,
  • MIKI, MOTOHIRO,
  • KITANO, MASAHIRO
  • 発明者(英語)
  • IZUMI, MITSURU,
  • MIKI, MOTOHIRO,
  • KITANO, MASAHIRO
国際特許分類(IPC)

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