To provide heat pump water heater having a reduced size, improved performance, low cost and good user-friendliness by improving the storage and maintenance properties of structural components.
The heat pump water heater comprises a refrigerant circuit 7 having radiators 3, 4 connected to a compressor 2, an evaporator 6 and a pressure reducing means 5 each as one element, in sequence, to form a closed circuit in which refrigerant is circulated by the compressor 2, a blowing means 8 for blowing air to the evaporator 6, and a water-refrigerant heat exchanger for heat exchange with the radiators 3, 4. The water-refrigerant heat exchanger consists of a hot water supply water-refrigerant heat exchanger 9 and a bath heat retention reheating water-refrigerant heat exchanger 17. Thus, a body has a smaller size and lower cost, and eventually the heat pump water heater has improved maintenance property, reduced cost and good user-friendliness.
COPYRIGHT: (C)2006,JPO&NCIPI
Shinji Watanabe
| JP2001082818A | ||||
| JP2003279133A |
Hiroki Naito
Daisuke Nagano