| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bathtub hot water supply device and a washing water pouring device preventing the large amount of water leak caused by freezing water remaining in a backflow preventive device due to drainage. <P>SOLUTION: The bathtub hot water supply device 1 comprises a hot water supply part 2 for heating water used for feeding hot water and a reheating part 5 for reheating water inside a bathtub 3. The backflow preventive device 50 is provided between a hot water circuit 11 (a clean water circuit) provided with the hot water supply part 2 and a bathtub circulation circuit 22 (a water circuit for miscellaneous use) provided with the reheating part 5. The backflow preventive device 50 opens and closes an overflow port 52 according to a difference in the water feed pressure of water fed from the hot water circuit 11 side to the bathtub circulation circuit 22 side. A freezing preventive heater 88 is arranged near the backflow preventive device 50. The bathtub hot water supply device 1 restrains the function of preventing water leak from the overflow port 52 by prohibiting the supply of hot water into a bathtub 3 for a predetermined period of time. <P>COPYRIGHT: (C)2004,JPO |
