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Title:
HEAT PUMP WATER HEATER
Document Type and Number:
Japanese Patent JP2009092323
Kind Code:
A
Abstract:

To provide a small and inexpensive heat pump water heater.

This heat pump water heater comprises: a heat pump unit including a heat pump cycle; a hot water storage tank 1; a first water circuit 50 connecting the upper and lower parts of the hot water storage tank 1, the first water circuit 50 including a boiling reheating exchanger 2 for heat exchanging with bath water, and a first three-way valve 20; and a second water circuit 51 for connecting the upper and lower parts of the hot water storage tank 1, the second water circuit 51 including a water refrigerant heat exchanger 9, and a second three-way valve 19. The first three-way valve 20 is connected to the second three-way valve 19. A circulation pump 18 is provided between the first three-way valve 20 and the second three-way valve 19. A suction side of the circulation pump 18 is connected to the first three-way valve 20 side.


Inventors:
KITANISHI HIROSHI
Application Number:
JP2007000264290
Publication Date:
April 30, 2009
Filing Date:
October 10, 2007
Export Citation:
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Assignee:
PANASONIC CORP
International Classes:
F24H1/00; F24H1/18
Domestic Patent References:
JP2009068761A2009-04-02
JP2004218907A2004-08-05
JP2007255820A2007-10-04
JP2004069084A2004-03-04
JP2007113836A2007-05-10
JP2007232225A2007-09-13
JP2003139392A2003-05-14
JP2009068760A2009-04-02
Attorney, Agent or Firm:
岩橋 文雄
内藤 浩樹
永野 大介