发明授权
- 专利标题： Heat pump type hot-water supply system capable of performing defrosting operation
- 专利标题（中）： 能够进行除霜运转的热泵式热水供给系统
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申请号： US09656487申请日： 2000-09-07
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公开(公告)号： US06418737B1公开(公告)日： 2002-07-16
- 发明人: Jyouji Kuroki , Hisayoshi Sakakibara , Masahiko Ito , Tomoaki Kobayakawa , Kazutoshi Kusakari , Michiyuki Saikawa
- 申请人： Jyouji Kuroki , Hisayoshi Sakakibara , Masahiko Ito , Tomoaki Kobayakawa , Kazutoshi Kusakari , Michiyuki Saikawa
- 优先权： JP11-258812 19990913
- 主分类号： F24H100
- IPC分类号： F24H100
摘要：
A heat pump type hot-water supply system performs an ordinary operation for heating liquid stored in a reservoir by circulating the liquid in a heat exchanger for supplying hot water. When an outlet temperature of an exterior heat exchanger is lowered to about −5° C., the ordinary operation is switched to a defrosting operation, and an opening degree of an expansion valve is decreases as compared to that at the ordinary operation. Accordingly, hot gas discharged from a compressor radiates a decreased amount of thermal energy in the heat exchanger for supplying the hot gas. Hot gas discharged from the compressor can reach the exterior heat exchanger without lowering its temperature largely to perform defrosting of the exterior heat exchanger.
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