BURNER UNIT AND DOMESTIC HEATING STOVE FOR LIQUID FUEL Russian patent published in 2004 - IPC

FIELD: domestic heating appliances working fuel (kerosene, diesel fuel) without additional energy; evaporation-type burner units at control of natural draught.

SUBSTANCE: proposed burner unit has cylindrical housing fastened with base made in form of disk and provided with air intake ports; housing is provided with two cylindrical perforated shells forming combustion chambers in between them; air supply passage is provided between housing and external shell. Internal shell is closed with blind diaphragm at the top and with perforated diaphragm at the bottom. Housing terminates in contraction at the top and has holes for delivery of secondary air which are located in upper half. Mounted in internal shell is tubular fuel evaporator whose inlet is communicated with fuel system of heating appliance and outlet is communicated with gas collector made in base between shells in form of circular passage; this passage is provide with gas dispersion unit made from porous hygroscopic heat-resistant material, asbestos cardboard for example in form of stack of belts. Upper end faces of shells are provided with swirlers in form of throttling grate with many guide vanes. Guide vanes are located in plan between housing and internal shell in radial direction. Device is provided with ignition unit for firing-up the stove which is located near collector and is used for pouring fuel. Stove includes fuel tank with flow regulator, body inside which combustion chamber and air chamber are located. Gas duct mounted above combustion chamber is provided with exhaust branch pipe fitted with rarefaction regulator. Burner unit is so mounted in partition that upper portion of its housing is located in combustion chamber of stove and remaining part with holes for delivery of secondary air is located in air chamber. Housing may bypass surrounding air to gas duct through combustion chamber beyond burner unit by means of bypass port made in partition. Delivery of fuel from tank to evaporator of burner unit is performed by gravity. Maximum level of fuel in tank is at height excluding its overflow from evaporator to collector.

EFFECT: complete combustion of fuel; enhanced reliability; improved characteristics without re-adjustment.

25 cl, 9 dwg