To provide an integral type heat pump water heater capable of miniaturizing and thinning a body while securing tank volume, and capable of carrying out installation performance improvement.
A casing 20a is provided for housing a heat pump circuit 20b and a tank/water circuit 20c. The heat pump circuit 20b is composed by annularly connecting a compressor 1, a water-coolant heat exchanger 2, a pressure reducing valve, an air-coolant heat exchanger 4, a blower 5, or the like, and filling a coolant. The tank/water circuit 20 is composed of water circuit composed by connecting a hot water storage tank 6, a mixing valve, or the like, and a piping connecting part 16 connecting a water supply piping, a hot water supply piping, or the like. The hot water storage tank 6 is composed of a square or a flat type tank, and storing performance can be improved as compared with a conventional cylindrical hot water storage tank. The body can be miniaturized and thinned while securing the tank volume, and furthermore, installation performance improvement can be carried out.
NAKATANI KAZUTO
Hiroki Naito
Daisuke Nagano
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