Patent ID: 7356942

Claim:
A gas hot air gun comprising: a blower; a nozzle; a main body including a barrel and a handle, with a heating chamber and a mixing chamber in said barrel, and a battery set and a gas can inside said handle, wherein the gas can contains burnable fluid; an ignition device installed inside said barrel; and a switch set installed inside said main body, said switch set including a power switch and an ignition switch, when said power switch is pressed, gas is sprayed out from said nozzle into said mixing chamber to mix with air and sent to said heating chamber, wherein said ignition switch has said ignition device ignite the mixed gas and air and generate heat, said blower blows hot air inside said heating chamber out, wherein a metal slice is inside said heating chamber, with the metal slice having a good heat exchange rate and heat conductivity to be heated up and cooled down rapidly, said metal slice also has air flow direction regulation effect, with the metal slice including an axially extending burning chamber, with the metal slice further including a plurality of lobes, with the lobes and the main body defining a plurality of passages radially spaced from and circumferentially spaced around the burning chamber.