Patents Assigned to Japan Energy Corporation & Mayekawa Manufacturing Co. Ltd.
  • Working fluid composition and method for lubricating ammonia refrigerating machine
    Patent number: 5651257
    Abstract: The present invention provides a working fluid composition for a refrigerating machine obtained by mixing an ammonia refrigerant with a lubricating oil which is extremely excellent in solubility with the ammonia refrigerant. The working fluid composition comprises a mixture of ammonia and one or more kinds of polyether compounds; the refrigerating machine is characterized by constituting a refrigerating cycle or a heat pump cycle through which the working fluid composition is circulated.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 29, 1997
    Assignee: Japan Energy Corporation & Mayekawa Manufacturing Co. Ltd.
    Inventors: Keisuke Kasahara, Kuniaki Kawamura, Takashi Kaimai, Hisashi Yano