| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water heater with a reheating function of a latent heat recovery type carrying out space saving by compactly composing a secondary heat exchanger in comparison with a conventional one, and improving heat exchange efficiency by securing an overall length of a heat absorbing pipe. <P>SOLUTION: The water heater is provided with a combustion means for burning fuel, a primary heat exchanger recovering sensible heat of combustion gas generated by the combustion means by the heat absorbing pipe, and the secondary heat exchanger recovering latent heat of the combustion gas having passed through the primary heat exchanger by the heat absorbing pipe. The heat absorbing pipe of the secondary heat exchanger continuously has a meandering shape comprised of straight parts and curved parts, and intervals between the heat absorbing pipes adjacent to each other in outer sides of the curved parts are smaller than intervals between the heat absorbing pipes adjacent to each other in inner sides of the curved parts. <P>COPYRIGHT: (C)2007,JPO&INPIT |
