Combustion – Porous – capillary – particulate or sievelike flame holder,...
Patent
1980-09-26
1983-11-22
Scott, Samuel
Combustion
Porous, capillary, particulate or sievelike flame holder,...
431152, 431337, 431344, 126 43, 126 44, F23D 340
Patent
active
044166176
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an apparatus for burning spirit or similar liquid fuels, comprising a fuel container which is filled with a mass absorbing the fuel and having a completely or partly exposed surface from which the fuel evaporates, and a draught or burner tube projecting from the container and provided with a gap for the intake of combustion air between the tube and the absorbing mass.
Apparatuses of this kind are already disclosed in Swedish patent specifications Nos. 223,021 and 331,333, wherein the draught or burner tube forms an upward extension of a passage arranged in the absorbing mass and having a completely or partly exposed surface. According to the patent specification No. 223,021, the draught or burner tube is arranged in a fixed position in relation to the fuel container and the control of the flame is performed by means of a manually adjustable valve at the lower end of the passage arranged in the absorbing mass. According to the patent specification No. 331,333, the draught or burner tube is dimensioned and located in relation to the passage in the absorbing mass in such a way that an annular gap for the intake of combustion air is formed between the tube and the passage, the control of the flame being possible by changing the axial position of the draught or burner tube in relation to the passage in the absorbing mass.
In another embodiment shown and described in the British patent specification No. 1,249,165 the burner tube is arranged centrally in a top cover of the container, and valve-controlled ,apertures are arranged in the top cover around the burner tube for the intake of combustion air through the top cover above the exposed surface of the absorbing mass.
The purpose of the invention is to provide an apparatus of the kind initially referred to which provides an improved evaporation of the fuel and reduced wind sensitivity, which altogether provides an improved efficiency.
It is a further object of the invention to provide an apparatus having a more reliable functioning due to a reduced risk of soot generation, elimination of the possibility of removing the fuel container before the flame is completely extinguished, and reduction of the inconveniences associated with over-boiling when the apparatus is being used.
Finally, it is an object of the invention to provide a simpler construction of the apparatus and particularly the fuel container included therein, a continuous control of the flame in a simple manner at the same time being obtained by means of a manually adjustable control member provided on the apparatus.
The related objects are achieved by an apparatus of the kind initially referred to having obtained the characteristics according to claim 1.
In order to illustrate the invention an embodiment thereof will be described in more detail below, reference being made to the accompanying drawings in which
FIG. 1 is a cross-sectional view of the apparatus according to the invention with the lid in closed position,
FIG. 2 is a fragmentary plan view of the apparatus, the lid and parts connected therewith being removed, and
FIG. 3 is a side view of the fuel container when fuel being filled therein.
The apparatus shown in the drawings for burning spirit or similar liquid fuels is primarily intended as spirit stove for cooking, particularly in boats. The apparatus comprises a rectangular box 10 having a lid 11 which is pivotally connected to the box 10 at the left edge in a hinge 11' to be swung between a closed position according to FIG. 1 and a raised or opened position. The lid is formed in a conventional way with a circular annular depression 12 defined by a circumferential outer sloping shoulder 13 and a central inner flanged overflow edge 14 surrounding a central circular aperture 15 in the lid 11. Thus, between the shoulder 13 and the overflow edge 14 there is defined an annular tray formed by the depression 12 for receiving overflow at over-boiling. On the lid 11 there can be provided in a conventional manner a stand for supporting the cooking utensils.
A draught or burn
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Green Randall L.
Origoverken I Halmstad Aktiebolag
Scott Samuel
LandOfFree
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