Patent ID: 6050809
Filing Date: 2000-04-18
Classification: F23C,F23D

Abstract:
A burner for producing an air and fuel mixture and combusting the mixture down an immersion tube, the burner comprising:a housing having a front and rear ends, the rear end including means for mounting fuel supply apparatus to the housing, the housing further having an air inlet, and a discharge outlet, a fan connected to the air inlet for supplying air to the burner,a combustion sleeve mounted inside the housing having an inlet end and an outlet end, the outlet end engaging the discharge outlet of the housing,an igniter extending into the combustion sleeve, anda burner nozzle for mixing the fuel and air, the burner nozzle having a center shaft aligned along an axis and a nixing plate, the center shaft having an attachment end sized to accept fuel supply apparatus near the rear end of the housing and a mixing end carrying a plurality of fuel outlet ports for delivering fuel inside the combustion sleeve, the mixing plate extending radially from the center shaft between the attachment and mixing ends, a periphery of the mixing plate connected-to the inlet end of the combustion sleeve, a plurality of holes extending through the mixing plate to allow air to pass therethrough,wherein the housing has a restriction orifice located at the air inlet, the restriction orifice creating a pressure drop which reduces air pressure fluctuations pulsating between the fan and the burner nozzle, thereby reducing flame instability.