PURPOSE: To impart energy-saving water supply, instantaneous water supply and hot water storing functions by forming a pump circulating path between a large capacity hot water storage tank and a heat source, disposing a heat exchange for the bath in the return path, and constituting the circulation path by three-way valves in a manner switchable to hot water supply faucet, tank lower part, tank middle part and bath heating.
CONSTITUTION: Hot water in a large capacity hot water storage tank 1 circulated by a pump 12 through hot water supply reciprocating pipe 13, heat source 10, threeway switching electromagnetic valve 14, electromagnetic valve 27, hot water supply return pipe 15, orifice part 17 and three-way electromagnetic valve 16. In this case, when by switching the three-way switching electromagnetic valve 16 to communicate an inlet 5 for storing hot water in a large quantity, hot water stored in a large quantity can be obtained, and the three-way valve is communicated with the side of an inlet 6 for storing hot water in a small quantity, hot water stored in a small quantity can be obtained. Further, when the three-way vale 14 is switched to the side of the water supply faucet, the instantaneous hot water supply is started. When the electromagnetic valve 17 is closed in a state where a large quantity of hot water is heated up and hot water is flowed into the heat exchanger 27, additional heating of the bath can be performed. By this construction, a hot water supply bath unit combined with a low-input instantaneous hot water supplier and a large capacity hot water tank, which is energy-saving and convenient for use, can be obtained.
| JP2008170081 | HEAT PUMP TYPE WATER HEATER |
| WO/1992/008930 | GAS BURNER SYSTEM, GAS BURNER AND A METHOD FOR COMBUSTION CONTROL |
| JPS604024 | [Title of the device] Bath heater device |
INDOU MASAHIRO
KANEKO HIDEKI
SUGANO TADAO
