| 摘要 |
<p>PURPOSE:To heat city water by the waste hot-water or a bath to reduce the necessary heat-generating amount of a heater and serve for energy saving by a method wherein a city water pipe, passing through a waste hot-water tank, is connected to a three-way valve interposed in a pipeline connecting a bathtub with the heat exchanger of the heater. CONSTITUTION:In the bath device 1, the three-way valve 7 is interposed in the pipeline 6, connecting the bathtub 2 to the heat exchanger 4 of the heater 3, and said three-way valve 7 is communicated with the city water pipe 10, and passing through the waste hot-water tank 9. Said heater 3 is provided with a burner 21 for burning gas and the heat exchanger 4 heated by the combustion heat of the burner while said heat exchanger 4 is connected to the bathtub 2 through said pipeline 6. The pipeline 6 consisting of the pipeline 23, connecting the inlet port of the heat exchanger to the bathtub 2 and arranged at the upstream side of said heat exchanger 4, and a return pipeline 24, connecting the outlet port of the heat exchanger 4 to the bathtub 2 and arranged at the downstream side of the heat exchanger 4.</p> |
