Heat pump hot water apparatus

Abstract

According to a heat pump hot water apparatus of the invention, the hot water tank 7 is disposed on one side of the casing 50 , the antifreeze liquid circulating means 41 and the heat pump circuit are disposed on the other side of the casing 50 , and the water/refrigerant heat exchanger 2 is disposed at a location higher than the compressor 1 . According to this configuration, the heat pump circuit and the hot water tank circuit are accommodated in one casing 50 , stability and noise-reduction effect can be realized when the heat pump hot water apparatus is installed, and the casing 50 can be made smaller in size by enhancing layout balance of functional parts in the casing 50.

1 . A heat pump hot water apparatus comprising:
 an antifreeze liquid circuit including antifreeze liquid circulating means which makes antifreeze liquid circulate, and an earth thermal heat exchanger which absorbs earth thermal by the antifreeze liquid;   a heat pump circuit including a compressor which compresses a refrigerant and discharges the same, a water/refrigerant heat exchanger which absorbs heat from the refrigerant discharged from the compressor to produce hot water, a decompressor which decompresses the refrigerant which dissipates heat in the water/refrigerant heat exchanger, and an antifreeze liquid refrigerant heat exchanger which absorbs heat from the antifreeze liquid by the refrigerant decompressed by the decompressor; and   a hot water tank in which hot water heated by the water/refrigerant heat exchanger is stored; in which   the antifreeze liquid circulating means, the heat pump circuit and the hot water tank are accommodated in one casing, wherein   the hot water tank is disposed on one of sides of the casing,   the antifreeze liquid circulating means and the heat pump circuit are disposed on the other side of the casing, and   the water/refrigerant heat exchanger is disposed at a location higher than the compressor.   
     
     
         2 . The heat pump hot water apparatus according to  claim 1 , wherein the water/refrigerant heat exchanger and the antifreeze liquid refrigerant heat exchanger are disposed at locations higher than the compressor and the antifreeze liquid circulating means. 
     
     
         3 . The heat pump hot water apparatus according to  claim 1 , further comprising a hermetic first expansion tank connected to the hot water tank, wherein
 the first expansion tank is disposed at a location higher than the hot water tank.   
     
     
         4 . The heat pump hot water apparatus according to  claim 3 , further comprising a hermetic second expansion tank connected to the antifreeze liquid circuit, wherein
 the second expansion tank is disposed at a location higher than the antifreeze liquid refrigerant heat exchanger.   
     
     
         5 . The heat pump hot water apparatus according to  claim 4 , wherein the first expansion tank is disposed on the one side of the casing, and the second expansion tank is disposed on the other side of the casing.