HOT-WATER BOILER Russian patent published in 1999 - IPC

FIELD: low-capacity boiler houses used for heating systems and hot water systems. SUBSTANCE: hot-water boiler includes furnace with rear. roof and side framing shields and convective shields mounted in convective gas duct separated from furnace by means of baffles. Tubes of all shields are connected with respective headers; headers of convective shields and side framing shields are provided with transversal baffles. Convective gas ducts are divided by L-shaped gas directing baffle having horizontal and vertical shelves. Vertical shelf is located coaxially relative to first (in way of motion of water) transversal baffle of upper convective header and horizontal shelf is located in central portion of gas duct; length of this shelf corresponds to distance between transversal baffles of upper convective header. Upper headers of convective shields are connected to upper headers of side framing shields whose lower headers are connected with lower header of rear shield whose upper header is used as rear header of roof shield. EFFECT: complete use of flue gases due to increased density of thermal fluxes in flue gas duct and forming of counter crossing flow in way of gas and medium being heated. 2 cl, 3 dwg