Patents by Inventor Kouichi Negoro

Kouichi Negoro has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Refrigeration cycle system
    Patent number: 5182920
    Abstract: A condenser (2), an electronic expansion valve (5), an evaporator (6), and a motorized suction throttle valve (8) are connected in series with a compressor. When a capacity is increased, the electronic expansion valve (5) is controlled to be in a throttling direction and the motorized suction throttle valve (8) is controlled to be in an unthrottling direction in association with the control of the electronic expansion valve (5), and when a capacity is decreased, the electronic expansion valve (5) is controlled to be in an unthrottling direction and the motorized suction throttle valve (8) is controlled to be in a throttling direction in association with the control of the electronic expansion valve (5). While a capacity control of a compressor by a throttle control is been carried out, such associated control is made between the electronic expansion valve (5) and the motorized suction throttle valve (8), realizing a fine temperature control in a refrigerating machine without hunting.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: February 2, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Fumio Matsuoka, Kouichi Negoro, Takeshi Sugimoto, Toshiaki Yamaguchi, Tetsuya Yamashita