Heat pump water heater
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United States of America Patent
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-
Nov 1, 2016
Grant Date -
Aug 13, 2015
app pub date -
Jul 23, 2013
filing date -
Sep 25, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A heat pump water heater includes: a compressor; a first water-refrigerant heat exchanger; a second water-refrigerant heat exchanger; refrigerant paths capable of forming a refrigerant circuit; and water channels including a flow channel, the flow channel leading hot water that has passed through the second water-refrigerant heat exchanger to the first water-refrigerant heat exchanger. The heat pump water heater is able to perform a heating operation. In the heating operation, the hot water heated in the second water-refrigerant heat exchanger is fed to the first water-refrigerant heat exchanger and the hot water further heated in the first water-refrigerant heat exchanger is supplied to a downstream side of the water channels. The first water-refrigerant heat exchanger is able to be replaced without replacing the second water-refrigerant heat exchanger.
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