公开(公告)号：US5182920A

公开(公告)日：1993-02-02

申请号：US903275

申请日：1992-06-24

申请人： Fumio Matsuoka ,  Kouichi Negoro ,  Takeshi Sugimoto ,  Toshiaki Yamaguchi ,  Tetsuya Yamashita

发明人： Fumio Matsuoka ,  Kouichi Negoro ,  Takeshi Sugimoto ,  Toshiaki Yamaguchi ,  Tetsuya Yamashita

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

CPC分类号： F25B41/043 ,  F25B41/062 ,  F25B2341/065 ,  F25B2500/15 ,  Y02B30/72

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.