| 摘要 |
PURPOSE:To maintain the hot water temp. in a bathtub at a moderate temp. in the daytime by utilizing midnight power by a method wherein a pump circulating forcibly the hot water in a circuit and an electric heater accumulating heat at a heat accumulating part are installed and when the hot water temp. is reduced, heat is supplied to the hot water from the heat accumulating part. CONSTITUTION:When a pump 3 is operated and the hot water temp. in a bathtub 1 is reduced to moderate temp. or less, a motor-operated valve 14 is switched over to the side of a heat accumulating part 4 on the basis of the signal from a temp. sensor 11 and the hot water in a circuit 2 exchanges heat with the part 4 to be heated and high temp. water is discharged from a discharge port 6 to raise up the hot water temp. in the bathtub 1. After the part 4 exchanges heat with the hot water in the circuit 2 all day long to release its heat, the amount of heat accumulated in the part 4 is gradually reduced to lower the temp. of the part 4, however, a timer 12 is turned on in the midnight every day to heat an electric heater 10 and the part 4 is heated to an extremely high temp. than the hot water temp. and a large amount of heat is accumulated in the part 4 and when the temp. of the part 4 reaches a set temp. or morning comes, the timer is turned off.
|
