Patent ID: 6257875
Filing Date: 2001-07-10
Classification: A01M,F23D,Y02E

Abstract:
A burner device for flame cultivation and flaming purposes, comprising:a primary burner having at least one fuel delivery jet nozzle arranged in an open combustion chamber defined within a burner skirt to direct a stream of fuel towards a flame delivery opening of the skirt;a vaporiser located in heat exchanging proximity to the primary burner and having a pressurisation chamber with an inlet for liquid fuel and an outlet for vaporised, gaseous fuel, the inlet being arranged to receive fuel in liquid state from a source of pressurised liquid fuel and the outlet being in fluid communication with the nozzle of the primary burner;a metering duct located in close vicinity to or within the vaporiser and arranged to discretely limit the amount of liquid fuel entering the vaporisation chamber via its inlet; anda first pressure reduction duct provided in the flow path of gaseous fuel between the vaporisation chamber outlet and the nozzle of the primary burner; the first pressure reduction duct arranged to impart a discrete pressure drop to gaseous fuel flowing therethrough from the vaporisation chamber to the nozzle of the primary burner, the discrete pressure drop being used to generate a low velocity combustion flame in the primary burner during normal torch operation.