摘要 |
PROBLEM TO BE SOLVED: To provide a bath boiler capable of pouring water in a bathtub at a user's set temperature without being affected with a season or a time of washing and without consuming a wasteful energy. SOLUTION: When a reheating heat quantity is K, a water pouring amount per unit time in a washing machine is Q, a water pouring temperature set value to the machine is Tset, a bathtub water temperature is Tin, and bathtub water temperature after heating by a reheating heat exchanger is Tout, the quantity K is set variable between a minimum reheating heat quantity Kmin and a maximum reheating heat quantity Kmax, a value of the K is changed to (Tset-Tin)×Q to become Tset=Tout if Tset>=Kmin/Q+Tin is satisfied, the water is poured in the machine after the reheating of the bathtub water is conducted, and if Tset<Kmin/Q+Tin is satisfied, the water is poured in the machine without reheating of the bathtub water. |