| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic bath hot-water supply device capable of automatically supplying hot water and additionally supplying hot-water to a bathtub from an initial time by simple setting. SOLUTION: This automatic bath hot-water supply device provided with a flow rate adjustment valve 13, a flow rate counter 17 and a water level sensor 15 in a hot water supply pipe conduit for supplying hot water to the bathtub, and adjusting the amount of hot water supply and the amount of hot water additionally supplied to the bathtub by controlling operation of the flow rate adjustment valve by a control unit 40, the control unit is provided with a memorizing portion 27 memorizing a plurality of sets of the set hot water supply amount designated by an user and the supposed amount of bathtub depth corresponded to the set hot water supply amount in advance, and an additional hot water supply control portion 26c calculating the additionally-supplied hot water amount by multiplying a horizontal sectional area of the bathtub determined from the set hot water supply amount and the supposed amount of bathtub depth memorized in the memorizing portion corresponding to the set hot water supply amount by the difference in water level of the bathtub between the completion of hot water supply and the present water level determined as a result of the detection by the water level sensor. COPYRIGHT: (C)2009,JPO&INPIT
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