| 摘要 |
PROBLEM TO BE SOLVED: To reduce a variation in the height dimension of a bound body of a gas combustion chamber 3A to a heat exchange part 4A in a water heater comprising the gas combustion chamber 3A, the heat exchange part 4A, and an exhaust duct part 56 which are arranged in a casing 9 in this order from the underside. SOLUTION: Each of a set of a right side wall 33 for combustion chamber and a right side wall 45 for heat exchange, a set of a left side wall 34 for combustion chamber and a left side wall 46 for heat exchange, and a set of a rear side wall 36 for combustion chamber and a rear side wall 48 for heat exchange forming the gas combustion chamber 3A and the heat exchange part 4A is formed of one sheet of plate. COPYRIGHT: (C)2006,JPO&NCIPI
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