| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump water heater which can use heat radiation from a compressor to heat water with high efficiency, and improve the operation efficiency. <P>SOLUTION: The heat pump water heater includes: a refrigerant circuit (refrigeration cycle 101) having the compressor 1 for compressing a refrigerant, a water-refrigerant heat exchanger 2 for providing heat exchange between the refrigerant and water, an expansion valve 3 for expanding the refrigerant, and an air heat exchanger 4 for providing heat exchange between the refrigerant and air; a water heat exchanger 7 which is disposed outside the compressor 1 and in which water receives heat of the compressor 1; a water circuit (hot-water supply circuit 201) having a channel of water passing through the water-refrigerant heat exchanger 2 and the water heat exchanger 7; and a vacuum heat insulating material 14 covering the water heat exchanger 7. <P>COPYRIGHT: (C)2013,JPO&INPIT |
