Heat pump type hot water supply apparatus and heating and hot water supply apparatus

Abstract

A heat pump type hot water supply apparatus includes a heat pump unit 2 for heating water, a hot water tank 1 for storing therein hot water heated by the heat pump unit 2 , and a hot water supply heat exchanger 10 which is placed substantially over a vertical entirety of interior of the hot water tank 1 and in which water flows from lower side toward upper side. Water that has flowed out from the upper side of the hot water supply heat exchanger 10 is discharged out from the top portion of the hot water tank 1.

1 . A heat pump type hot water supply apparatus comprising:
 a heat pump unit for heating water;   a hot water tank for storing therein hot water heated by the heat pump unit; and   a hot water supply heat exchanger which is placed substantially over a vertical entirety of interior of the hot water tank and in which water flows from lower side toward upper side of the interior, wherein   a hot water supply pipe connected to a top portion of the hot water supply heat exchanger projects from a top portion of the hot water tank.   
   
   
       2 . The heat pump type hot water supply apparatus as claimed in  claim 1 , wherein
 the hot water supply heat exchanger includes a coil-like pipe.   
   
   
       3 . The heat pump type hot water supply apparatus as claimed in  claim 2 , wherein
 the coil-like pipe of the hot water supply heat exchanger is denser in coil pitch on its lower side than on its upper side.   
   
   
       4 . The heat pump type hot water supply apparatus as claimed in  claim 1 , wherein
 water that has flowed in the hot water supply heat exchanger from the top portion of the hot water tank flows from lower side toward upper side of the hot water supply heat exchanger so as to be discharged out from the top portion of the hot water tank.   
   
   
       5 . The heat pump type hot water supply apparatus as claimed in  claim 1 , wherein
 water that has flowed in the hot water supply heat exchanger from a lower portion of the hot water tank flows from lower side toward upper side of the hot water supply heat exchanger so as to be discharged out from the top portion of the hot water tank.   
   
   
       6 . The heat pump type hot water supply apparatus as claimed in  claim 1 , further comprising
 a heater placed in the hot water tank and between upper end and lower end of the hot water supply heat exchanger.   
   
   
       7 . A heating and hot water supply apparatus including:
 the heat pump type hot water supply apparatus as claimed in  claim 1 ;   a heating terminal connected between a heating-use outlet and a heating-use inlet of the hot water tank of the heat pump type hot water supply apparatus; and   a circulating pump for circulating hot water in the hot water tank via the heating terminal.