HEATING BOILER Russian patent published in 1998 - IPC

FIELD: power engineering; sectional boilers. SUBSTANCE: cavity in each plate-like section 1, 2, 3 around which heat-transfer agent passes is formed by tube 6 of tube system (6') cast in light-metal housing; joints 4 and 5 for straight and return lines project from each light-metal housing. Joints 4 and 5 are connected to straight and return headers (4', 5') located on unit B. At least one intermediate section 3 and both end sections (1, 2) are provided with circular edge connecting fins 8 whose ends are made in form of gas-sealing surfaces (8'). Intermediate section 3 has hole (10') forming furnace 10. EFFECT: enhanced efficiency. 11 cl, 10 dwg