US 5,651,356 AGranted

Portable heater

OwnerMichael D. Kainesinventor

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Abstract

A portable heater comprising a fire chamber vessel, an outer enclosure container around the vessel for retaining it, the container bottom being spaced below the vessel bottom to define a vertical space therebetween, the container breadth being sufficiently greater than the vessel breadth to cause the container peripheral wall and the vessel peripheral wall to define a circumferential space therebetween, an upright air flow control member in the circumferential space spaced from the container peripheral wall to create convection air-flow, heat-insulating space between the control member and container peripheral wall, and having an upper discharge outlet; the control member being spaced from the vessel peripheral wall and oriented to create an upwardly convergent convection heat exchange air flow conduit between the flow control member and the vessel peripheral wall, and an upper heat outlet between said control member and said vessel for discharge of heated air; air flow inlet openings in the container adjacent the container bottom, and air flow inlet orifices past said air flow control member adjacent the container bottom from the circumferential space to the conduit, whereby convection air flow will occur partially up through the heat insulating space to the discharge outlet and partially up through the air flow conduit to the upper heat outlet, to draw ambient air through the container openings and partially through the orifices for continued air circulation. A closure cover is configured to removably interfit with the vessel open top, and has a thermally insulated handle for portability.

Claims15

Dependent claims

A portable heater comprising:

a fire chamber vessel having a peripheral wall, a bottom, a depth, a breadth and an open top;
an outer enclosure container around said vessel for retaining said vessel;
said container having a bottom, a peripheral wall, an open top, and a breadth;
said container bottom being spaced below said vessel bottom to define a vertical space therebetween;
said container breadth being sufficiently greater than said vessel breadth to cause said container peripheral wall and said vessel peripheral wall to define a circumferential space therebetween;
mounting fasteners between said vessel and said container, retaining said vessel and said container in spaced relationship to each other;
an upright air flow control member in said circumferential space, said control member being spaced from said container peripheral wall to create convection air-flow, heat-insulating space between said control member and said container peripheral wall, and having an upper discharge outlet;
said control member being spaced from said vessel peripheral wall and oriented to create an upwardly convergent, convection heat exchange air flow conduit between said flow control member and said vessel peripheral wall, and an upper heat outlet between said control member and said vessel for discharge of heated air;
air flow inlet openings in said container adjacent said container bottom;
and
air flow inlet orifice means for air flow past said air flow control member, adjacent said container bottom, from said circumferential space to said conduit whereby convection air flow will occur partially up through said heat insulating space and through said discharge outlet, and partially up through said upwardly convergent air flow conduit and through said upper heat outlet, to draw ambient air through said container openings and partially through said orifice means for continued air circulation.

8 more elements

Dependencies are inferred from the claim text.