| 摘要 |
PROBLEM TO BE SOLVED: To provide a bath device of superior convenience in its use in which uncomfortable feeling caused by feeding of cold water into a bathtub during an additional boiling work is not given to a user during taking bath.SOLUTION: An additional boiling circulation passage 25 is provided with a changing-over valve 17 acting as hot water discharging means for branching hot water passing through the additional boiling circulation passage 25 from a going-pipe 24 connecting a discharging side of an additional boiling heat exchanger with a bathtub 26 and discharging the hot water into a bath room 30. The additional boiling circulation passage 25 having a return pipe connecting the input side of the additional boiling heat exchanger with the bathtub 26 is provided with return hot water temperature detecting means. When a temperature of hot water in the additional boiling circulation passage 25 detected by the return hot water temperature detecting means is lower than a prescribed hot water discharging reference temperature at the time of starting the additional boiling operation for performing the additional boiling of the bathtub hot water, the changing-over valve 17 is controlled as shown in FIG.1(a) so as to perform a low temperature water discharging operation for discharging hot water in the additional boiling circulation passage 25 from the additional boiling circulation passage 25 to the bath room 30. |
