Improvements in or relating to water boilers or heaters, more particularly for central heating plants

摘要

489,141. Internally-fired hot-water boilers. HAEGEMAN, U. Oct. 6, 1937, No. 27119. Convention date, Oct. 9, 1936. [Class 64 (i)] In a boiler for a central-heating plant, a top water space h of relatively small size, by providing a quick supply of hot water through a connection m to the boiler outlet pipe l, induces an upward circulation through the main water space. The top water space encloses a return-flue over vertical flue tubes f, g in the main water space. Water flows from the main to the top water space through a connection n.