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Heat pump water heater

  • US 20040144528A1
  • Filed: 12/04/2003
  • Published: 07/29/2004
  • Est. Priority Date: 02/12/2002
  • Status: Active Grant
First Claim
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1. A heat-pump hot water device comprising:

  • a heat pump cycle including;

    a compressor;

    a radiator;

    a decompressor;

    a heat absorber; and

    a refrigerant flow path that couples the compressor, the radiator, the decompressor and the heat absorber in a closed circuit;

    a heat exchanger including a water flow path that exchanges heat with the refrigerant flow path;

    a water supply pipe for supplying tap water to the water flow path;

    a hot water supply circuit for leading the water from the water flow path to a hot water supply terminal; and

    a heater for heating the water flowing through a route, formed of the water supply pipe, the water flow path and the hot water supply circuit, at one of those three elements at least.

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