| 摘要 |
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 suff iciently greater than the vessel breadth to cause the container peripheral wall and the v essel peripheral wall to define a circumferential space therebetween, an upright air f low 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 contai ner 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 co nvection heat exchange air flow conduit between the flow control member and the vessel pe ripheral wall, and an upper heat outlet between said control member and said vessel for d ischarge of heated air; air flow inlet openings in the container adjacent the container b ottom, 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 parti ally up through the air flow conduit to the upper heat outlet, to draw ambient air throu gh the container openings and partially through the orifices for continued air circulat ion. A closure cover is configured to removably interfit with the vessel open top, and has a thermally insulated handle for portability.
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