FIELD: heating.
SUBSTANCE: invention concerns power industry, particularly heating system devices, and can be applied in various vehicles. Recuperative air heater includes air heat exchanger and fuel and air mix combustion chamber, their end walls forming gas and air annular channels with ambient air inlet pipe and heated air and combustion product outlet pipe, fuel duct, flat evaporator element for liquid fuel out of heat-proof porous material featuring a hole and mounted on holder at combustion chamber side, shutting outlet orifice of fuel duct. Inlet collector of ambient air is formed between front wall and annular channels of heat exchanger, and holder is attached to front end wall where fuel and air mix preignition chamber is attached from the outside. To that effect, the holder features hole of the diametre matching respective attached end of preignition chamber and shut by evaporator element, and orifice in evaporator element is made in the centre of attached preignition chamber end, in front of which an igniter is mounted un the preignition chamber. Preignition chamber is connected by air duct to ambient air feed pipe connected over collector to combustion chamber by tubes installed in wall along combustion chamber perimetre with tangential orientation of ambient air feed jet in combustion chamber for vortex stirring of fuel and air mix.
EFFECT: improved efficiency due to improved quality of fuel and air mix formation, allowing for complete combustion and reduced content of toxic substances in gas emitted into air.
6 cl, 3 dwg
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Authors
Dates
2009-09-10—Published
2007-12-24—Filed