Refrigeration cycle system
    41.
    发明授权
    Refrigeration cycle system 失效
    制冷循环系统

    公开(公告)号:US5182920A

    公开(公告)日:1993-02-02

    申请号:US903275

    申请日:1992-06-24

    IPC分类号: F25B1/00 F25B41/04 F25B41/06

    摘要: 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.