Gas heating method and apparatus

Claim 1

Heating apparatus of the type in which heat is produced by burning a mixture of air and fuel gas in a combustion chamber, the apparatus comprising: a heat insulating casing holdable by hand; a rechargeable gas container disposed in said casing for containing an amount of liquefied fuel gas; a gas introduction passage having one end immersed in said gas container and the other end extending to later-mentioned air-gas mixing means, said other end having a gas outlet nozzle; gas-flow adjusting means interposed in said gas introduction passage for feeding an adjusted amount of gas under suction from said gas container; gas vaporizing means interposed in said gas introduction passage for feeding a vaporized state gas to later-mentioned air-gas mixing means; air-gas mixing means for mixing said vaporized gas from said gas vaporizing means with fresh air from the atmosphere, said air-gas mixing means having an outlet nozzle from which a jet of air-gas mixture is supplied and having air inlet aperture therein; a combustion chamber extending from said casing and having apertures on the periphery thereof, for having an introduction of said jet of air-gas mixture therein, said combustion chamber including two carriers carrying catalyzing substances of different character disposed therein for promoting the oxidation reaction of said jet of air-gas mixture; a heat conducting rod extending from said combustion chamber having a heating tip at one end; and ignition circuit means for igniting said jet of air-gas mixture in said combustion chamber, said ignition means including electrical power source, ignition means and means for selectively closing said ignitiion circuit means for connecting said power source and ignition means.