| 摘要 |
PROBLEM TO BE SOLVED: To control a constant flow rate of hot-water added to a bathtub by accurately grasping a flow rate of added hot-water, even when the simultaneous supply is performed in accompany with the supply of the hot-water, in a single supply mode for supplying the hot-water of high temperature only to the bathtub as the added hot-water, and to stably keep the flow rate and a temperature of the added hot-water even in transition to the simultaneous supply. SOLUTION: The flow rate Qb of added hot-water is determined by subtracting a branched flow rate Qh to a general hot-water supply passage 5, from an incurrent flow rate Qk detected by a can body flow rate sensor 32, the unknown branched flow rate is determined on the basis of a following formula: Qb = Qk-Qh = Qk-[ä(Tks-Tc)/(Ths-Tc)}Qy], in which Qy is the flow rate of supplied hot-water detected by a hot-water flow rate sensor 57, Tks is a set hot-water temperature set in a remote controller 101, Ths is a set outcurrent hot-water temperature of high temperature poured from the can body 2, and Tc is the water supply temperature detected by an incurrent temperature sensor 33. An opening of a flow rate control valve 71 with stopping function is controlled on the basis of the Qb. COPYRIGHT: (C)2004,JPO
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