| 摘要 |
A tubular steam boiler is provided to prevent scales from occurring on an inner wall of a water pipe by varying upper and lower diameters of the water pipe connected to a steam pipe head and a water pipe head, respectively. A tubular steam boiler comprises a steam pipe head(410) and a water pipe head(420), which are horizontally installed at upper and lower portions of the tubular steam boiler. The steam pipe head and the water pipe head have ring shapes with different diameters. A plurality of water pipes(300) are connected to the steam pipe head and the water pipe head. A combustion chamber(700) is formed in the water pipes. Burner flame(800) is generated in the combustion chamber. A diameter of an upper portion of the water pipe is different from a diameter of a lower portion of the water pipe. |
