发明授权
- 专利标题: Heat pump type water heater
- 专利标题(中): 热泵式热水器
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申请号: US10502618申请日: 2003-01-27
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公开(公告)号: US07883024B2公开(公告)日: 2011-02-08
- 发明人: Hiroshi Nakayama , Shinichi Sakamoto
- 申请人: Hiroshi Nakayama , Shinichi Sakamoto
- 申请人地址: JP Osaka
- 专利权人: Daikin Industries, Ltd.
- 当前专利权人: Daikin Industries, Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP.
- 优先权: JP2002-019506 20020129
- 国际申请: PCT/JP03/00703 WO 20030127
- 国际公布: WO03/064935 WO 20030807
- 主分类号: F24D11/02
- IPC分类号: F24D11/02
摘要:
A hot water storage tank (3) and a circulating path (12) coupled to the hot water storage tank (3) are provided. An operation is possible wherein low-temperature water, let out from a lower part of the hot water storage tank (3) and entering the circulating path (12), is heated and boiled up by a heat pump heating source for forwarding to an upper part of the hot water storage tank (3). A refrigerant circulating circuit of the heat pump heating source is provided with a defrost circuit (38) for supplying hot gas from a compressor (25) to an air heat exchanger (28). It is possible to perform a defrost operation for providing a supply of hot gas to the air heat exchanger (28), with a water circulation pump (13) of the circulating path (12) held in abeyance. The water circulation pump (13) is made active if the defrost operation has been continued for not less than a predetermined time period since the start thereof.
公开/授权文献
- US20050150969A1 Heat pump type water heater 公开/授权日:2005-07-14
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