STEEL HOT-WATER BOILED Russian patent published in 1997 - IPC

FIELD: heating of dwelling-houses. SUBSTANCE: hot-water boiled has outer and inner shells interconnected and provided with covers; they are connected by common bottom; boiled is provided with branch pipe for connection with smoke flue and ferrules for mounting and securing the doors equipped with shields and shut-off device. Lower door is provided with air intake device with cover secured by means of hinge and provided with adjusting screw. Upper door is used for cleaning hot-water section and middle door is used for pouring solid fuel. Lower door is used for poking, lighting up fuel and removal of ash and slag. Furnace 13 is provided with grate bars 14 for burning solid fuel; boiled may be provided with gas burner for burning natural gas. Hot-water sections 15 are secured in upper portion of furnace 13 in side walls of inner shell; they are inclined in two directions forming space between them; sections 15 are shifted relative to each other. Such position of hot-water sections 15 provided for free spaces which are connected with space between hot-water sections 15, thus forming zigzag passage for flue gases at higher efficiency of heat transfer. During operation of boiled, gases flow in succession over each section 15 on three sides; transverse passages for gases between hot-water sections increase heat-transfer time by 1.5 to 2 times. To enhance circulation of water and intensify its preheating during passage through all spaces of sections 15, grooves 17 are made at ends of sections on opposite sides edgewise in half-profile; as a result, projections 16 are formed edgewise in half-profile which limit volumes between boiler walls which are connected with volumes of hot-water sections 15 through grooves 17 forming zigzag passage for water at more effective heating due to inconsiderable inclination (1.5 to 2 deg.) of walls of hot-water sections 15. EFFECT: saving of fuel; intensified heating and more effective heating of water. 3 cl, 5 dwg