| 摘要 |
1,218,578. Sectional boilers. SOC. GENERALE DE FONDERIE. 12 March, 1968 [5 April, 1967], No. 12082/68. Heading F4A. Adjacent boiler sections 1, la defining a combustion chamber 1 have grooves 2 which in abutted surfaces define ducts 3 connected only to a common header 4. The header 4 may be connected to the pressure or suction side of the fan (7), Fig. 3 (not shown), supplying air to the combustion chamber or to the boiler smokebox (10). The ducts 3 may be sealed by asbestos packing 5. |
