发明授权
- 专利标题： Refrigerant flow control device
- 专利标题（中）： 制冷剂流量控制装置
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申请号： US824552申请日： 1986-01-23
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公开(公告)号： US4617804A公开(公告)日： 1986-10-21
- 发明人: Toshihiko Fukushima , Seigo Miyamoto , Kosaku Sayo , Kenji Emi
- 申请人： Toshihiko Fukushima , Seigo Miyamoto , Kosaku Sayo , Kenji Emi
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX60-14183 19850130
- 主分类号： F25B1/00
- IPC分类号： F25B1/00 ; F25B41/06 ; G05D23/19 ; F25B41/00
摘要：
In a refrigeration cycle in which the opening of the expansion valve is controlled by the super-heat degree of the refrigerant periodically detected at the outlet of the evaporator, a negative control signal is produced to rapidly change the opening of the expansion valve when the detected super-heat degree has reached zero. As a result, occurrence of the liquid back is prevented.