| 摘要 |
PURPOSE:To reduce fuel consumption under keeping clean feeling by a method wherein hot-water, overflowed from a bathtub, and waste water, used for washing in the bath room, are separated to retrieve heat energy and the overflowed hot-water is recirculated into the bathtub after heating it by a heat exchanger. CONSTITUTION:The overflowed hot-water A from a bathtub 3 is collected into an overflowed hot-water retrieving tank 6 once, thereafter, is passed through a three-way valve 10 after removing dirt by a filter 9, and one part thereof is sent into a heating heat exchanger 12 communicated with a boiler 11 to recirculate it into the bathtub 3 through a recirculating path 13 after heating while the other part thereof is recirculated into the bathtub 3 without passing through the heat exchanger 12 and these operations are effected by a sensor 21. The waste hot-water B of a washing place 2 is retrieved once into a waste hot- water retrieving tank 16 after collecting it into a waste hot-water groove 15 in order to provide clean water C in a clean water tank 20 with heat in a heat energy retrieving heat exchanger 19, thereafter, is abandoned. In case the quantity of hot-water in the bathtub 3 is short, pre-heated clean water C is supplemented through the overflowed hot-water retrieving tank 6. |
