| 摘要 |
PURPOSE:To contrive an accurate scalding of a filter by a method wherein the switching action of valve means is brought about by commands from a control part provided in a heat source device to switch the flow supply of a hot temp. water from circulating pipes to a bathtub water purification filter and the temp. of hot water supplied is maintained at a value not less than specified. CONSTITUTION:Valve means 13, 14 and 22 are provided at the intermediate parts along circulation pipes 4 and 5 connected between a circulation pump 2 and a bathtub 1 and a pipe 2b is connected to a heat source device 30 to supply hot water therefrom. The switching action of the aforesaid valve means is brought about by commands from a control part 31a provided in the heat source device 31 to switch the flow supply of a high temp. water from the circulation pipes 4 and 5 to a bathtub water purification filter 3 and the temp. of the hot water supplied from the heat source device 31 is maintained at not lower than 80 deg.C in conjunction with the switching action of the valve means. As a result, the bathtub water purification filter can be scalded accurately without the need of any manual switching operation for sterilization. |
