| 摘要 |
PURPOSE:To effect drop-in into a bathtub by the simultaneous operation of a hot water supplier and a bath boiler and shorten the time of drop-in operation by a method wherein the amount of drop-in supplying water is operated from the temperature of water, supplied into the hot water supplier, a bath set temperature and the maximum number of size of the bath boiler to control the same so as to be a set objective drop-in water supplying amount. CONSTITUTION:An objective drop-in water supplying amount Q2C is operated and set by a formula; Q2C=25. Gmax/(TQ-TC) from the temperature of water TC supplied into a hot water supplier 1, a bath set temperature TQ and the maximum number of size Gmax of a bath boiler. The valve travel of a water amount regulating valve 42 provided with closing function is regulated so that a drop-in supplying amount of water Q2 from a drop-in water supplying passage 41, which is mixed with the drop-in supplying hot-water from a drop-in hot-water supplying passage 43, becomes equal to the objective drop-in supplying amount of water Q2C to control the drop-in supplying hot-water temperature T2 whereby the simultaneous operation of the hot water supplier 1 and the bath boiler 2 can be effected upon the drop-in operation into the bathtub. As a result, the time of drop-in operation can be shortened. On the other hand, the set temperature TQ of bath can be obtained surely even when the pressure of water is low. |
