Title:
HEAT PUMP TYPE WATER HEATER
Document Type and Number:
WIPO Patent Application WO/2003/064935
Kind Code:
A1
Abstract:
A heat pump type water heater, comprising a hot water storage tank (3), a circulating passage (12) connected to the hot water storage tank (3), and a refrigerant circulation circuit for a heat pump heating source having a defroster circuit (38) for feeding hot gas from a compressor (25) to an air heat exchanger (28), whereby low temperature water flowing out from the lower part of the hot water storage tank (3) to the circulating passage (12) can be heated by the heat pump heating source for boiling and fed to the upper part of the hot water storage tank (3), by a defrost operation, the hot gas can be fed to the air heat exchanger (28) with a water circulation pump (13) in the circulating passage (12) stopped, and a specified time or longer after the defrost operation is started, the water circulation pump (13) is driven.
Inventors:
NAKAYAMA HIROSHI (JP)
SAKAMOTO SHINICHI (JP)
SAKAMOTO SHINICHI (JP)
Application Number:
PCT/JP2003/000703
Publication Date:
August 07, 2003
Filing Date:
January 27, 2003
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
NAKAYAMA HIROSHI (JP)
SAKAMOTO SHINICHI (JP)
NAKAYAMA HIROSHI (JP)
SAKAMOTO SHINICHI (JP)
International Classes:
F24D19/10; F24H4/04; F24H1/00; F25B1/00; F25B30/02; F25B40/00; F25B47/02; F25B9/00; (IPC1-7): F24H1/00; F25B30/02
Foreign References:
| JP2001263800A | 2001-09-26 | |||
| JPH08152193A | 1996-06-11 | |||
| JPS5912249A | 1984-01-21 | |||
| JPS63223458A | 1988-09-16 | |||
| JPH1163661A | 1999-03-05 | |||
| JPH0117016Y2 | 1989-05-18 | |||
| JP2002048399A | 2002-02-15 | |||
| JP2002213821A | 2002-07-31 |
Other References:
See also references of EP 1484559A4
Attorney, Agent or Firm:
Maeda, Hiroshi (4-8 Utsubohonmachi 1-chome, Nishi-k, Osaka-shi Osaka, JP)
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