초록 ▼

A portable heating unit having a housing with a carrying handle, the housing including a motor portion, a blower and an air intake. The housing also includes a mounting nose for receiving a hot air delivery barrel which has a double safety wall construction through that area in which flames for heat

A portable heating unit having a housing with a carrying handle, the housing including a motor portion, a blower and an air intake. The housing also includes a mounting nose for receiving a hot air delivery barrel which has a double safety wall construction through that area in which flames for heating air will be generated. A gas nozzle assembly is received either at an angle through an opening in the barrel wall or disposed concentrically within the barrel portion for introducing gas into the barrel. The nozzle assembly draws its air supply for combustion either in the back of the nozzle member and independent of the forced air supply or through the rear end of the barrel and an igniter is provided for lighting the gas by spark means. Provision is made for igniting the combustible gas at a location apart from the turbulent forced air flow and, for safety reasons, ignition of the combustible gasses is not possible in the absence of a forced air stream for delivering the generated heat from the barrel of the device.

대표청구항 ▼

A portable hot air generating heating device comprising; a housing device having carrying handle means, a blower, blower motor means for driving said blower, air intake means and a mounting nose portion through which air is directed by said blower, an elongated cylindrical barrel member received on

A portable hot air generating heating device comprising; a housing device having carrying handle means, a blower, blower motor means for driving said blower, air intake means and a mounting nose portion through which air is directed by said blower, an elongated cylindrical barrel member received on and detachably secured to said mounting nose portion of said housing, said barrel member having double wall construction whereby an outer barrel wall and an inner safety wall extend through a predetermined area where flame is generated to heat air from said blower, said inner safety wall being concentrically spaced from said outer wall to define an annular cooling space through which air from said blower may be directed, said barrel member including an elongated opening, a gas nozzle assembly mounted at an angle in said barrel member and including a control valve means and a gas nozzle member attached to said valve means, said gas nozzle member having an outer end portion received in said opening, said opening being positioned such that said outer end of the gas nozzle is located generally adjacent the inner end of said double wall construction of the barrel member, said nozzle assembly extending into said barrel member such that flame from gas in said nozzle member is generated within said barrel area having double wall construction, and power means for driving said blower, fitting means for attaching a gas supply line to said control valve means, and igniter means for igniting gas in said nozzle member.