| 摘要 |
PROBLEM TO BE SOLVED: To reduce an amount of bubbles by minifying a space to an impeller from a bath pump suction opening composed in a bath pump upper part of a bath pump interior being a portion prone to form bubbles in bath piping. SOLUTION: The storage type hot-water supply device is provided with a hot water storage tank storing hot water, a bath heat exchanger carrying out heat exchange between the hot water stored in the hot water storage tank and hot water in a bathtub, and a bath pump 1 sending the hot water of the bathtub to the bath heat exchanger. The bath pump 1 is composed of the suction opening 2 sucking in at least the hot water in the bathtub, a discharge opening 5 discharging hot water into the bathtub, the impeller 3 circulating hot water from the suction opening to the discharge opening, and a casing housing components composing the bath pump. An indentation part is provided in a path from the suction opening to the impeller. COPYRIGHT: (C)2008,JPO&INPIT
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