| 摘要 |
A pipe laying structure in heat exchanging tubes for both a boiler and a hot water supply is provided. The pipe laying structure is formed by subsequently laying a corrosion-resistant auxiliary heat exchanger (5) in which a heat exchange area or a heat transfer area is designed so that both latent hear and combustion heat, or only combustion heat is absorbed while combustion heat generated by combustion of a gas burner (2) located in a combustion chamber (Ia) contact a water recollection tube (6) which recollects hot water so that a heat medium such as water flows against or returning to a flow of discharging the combustion heat in the air via a gas outlet of an exhaust gas duct (3) from the combustion chamber (Ia), a main heat exchanger (4) which is connected with the auxiliary heat exchanger (5) via connection tubes (7a), and is designed to absorb only combustion heat at the lowermost limit within a proportional control range, and a water tube (7) in which one end of the water tube (7) is connected with the main heat exchanger (4) to thereby absorb heat which radiates toward an outer wall of the combustion chamber (Ia) and the other end thereof is connected with a supply tube (8), to thereby form a hot water flow path, and to thus maximize an efficiency, prevent corrosion, and allow an easy assembly. |
