| 摘要 |
PURPOSE: A hot water supply device is provided to reduce a cost of the hot water supply device in spite of proving a first hot water supply pipe for supplying a hot water to a kitchen, a bath room and a bathtub and a second hot water supply device for supplying the water to the bathtub. CONSTITUTION: A hot water supply device comprises a combustion device(2) provided to an upper portion of a housing(1) and a body(3). The body is connected to the combustion device(2) and forms a passage for guiding a combustion exhaust air. The combustion device(2) comprises a gas burner(4a,4b) made of a porous ceramic, a gas pipe(5) for supplying a gas to the fuel gas burner and a combustion fan(6) for supplying an air for a combustion. The body(3) comprises a main heat exchanger(10) and a sub heat exchanger(11). The main heat exchanger(10) is composed of a first hot water supply pipe(13a) connected through a plurality of a suction pin(12) and a second hot water supply pipe(13b). The first hot water supply pipe(13a) is connected from the sub heat exchanger(11). One end of the sub heat exchanger is connected to a water works and an end of the main heat exchanger(10) is connected to a kitchen or a bath room. The second hot water supply device is connected only to the main heat exchanger(10). One end of the second hot water supply pipe(13a) is connected directly to a bathtub(15), and the other end of thereof is connected to the bathtub through a circulating pump(16).
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