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US 4,734,029 AGranted
Burner for campstove
AssigneeThe Coleman Company, Inc.
InventorDuncan Newman
Life of this patent
Estimating the term…
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AssigneeThe Coleman Company, Inc.
InventorDuncan Newman
Estimating the term…
A campstove burner includes a burner box which is located above the burner pan of the burner. The burner rings are positioned between the burner pan and the burner box, and a fuel and air mixture within the burner box flows through the burner rings where it is ignited. Since the burner box is located above the burner pan, liquid fuel within the burner box will flow through the burner rings and will be ignited in the burner pan outside of the burner box. The burner box includes an L-shaped aspirator tube for mixing fuel and air. An inlet end of the aspirator tube communicates with a source of primary combustion air, and a fuel tube extends into the outlet end of the aspirator tube for aspirating combustion air into the inlet end. The burner box includes a generally cylindrical sidewall and the outlet end of the aspirator tube directs the fuel and air mixture generally tangentially to the inside of the cylindrical sidewall to promote swirling and mixing of the fuel and air.
A burner assembly for a campstove comprising a burner pan, a plurality of burner rings mounted on the pan for permitting fuel and air to flow therethrough, a burner box mounted on said burner rings and providing a fuel and air mixing chamber above said burner rings, an aspirator tube extending upwardly from an opening in the burner pan into the mixing chamber, and a fuel tube which extends into said aspirator tube for permitting fuel and air to enter said mixing chamber whereby a fuel and air mixture within the mixing chamber can flow through said burner rings and liquid fuel within the mixing chamber can flow by gravity through the burner rings and be collected by the burner pan.
A campstove comprising a fuel tank, a burner pan mounted above the fuel tank, a burner box above the burner pan, burner box support means between the burner pan and the burner box for supporting the burner box, the burner box support means having passages for permitting fuel and air to flow therethrough, the burner box providing a fuel and air mixing chamber above said passages, means for permitting fuel and air to enter said mixing chamber whereby a fuel and air mixture within the mixing chamber can flow through the passages of the burner box support means and liquid fuel within the mixing chamber can flow by gravity through the passages in the burner box support means and be collected by the burner pan, and a grate mounted above the burner box.
A burner assembly for a campstove burner comprising a top wall, a bottom wall, and a cylindrical side wall between the top and bottom walls, said walls forming a chamber for mixing fuel and air, a generally L-shaped aspirator tube in the chamber, the L-shaped aspirator tube including an upwardly extending inlet portion which extends upwardly from an opening in the bottom wall and an outwardly extending outlet portion, a fuel tube extending into the aspirator tube for delivering fuel to the aspirator tube, said outwardly extending outlet portion of said aspirator tube being offset from the diameter of said cylindrical side wall and extending generally parallel to a tangent to said cylindrical side wall whereby fuel and air are caused to swirl around the inside of said cylindrical side wall, and means for allowing fuel and air to exit from the chamber.
Dependencies are inferred from the claim text.