Combustion – Candle – e.g. – taper – etc. – Having structure additional to wax and wick
Patent
1998-01-20
1999-11-09
Dority, Carroll
Combustion
Candle, e.g., taper, etc.
Having structure additional to wax and wick
431289, 431291, 431292, 431298, 431325, 362161, F23D 316
Patent
active
059802413
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a paraffin lamp (tea-light and lamp) having a container for a fuel with at least a partial cover, and a non-combustible wick in a wick holder comprising a holder tube for the lower wick section from which funnel segments extend upwards to receive the fuel and transmitted heat; the invention furthermore relates to a non-combustible wick and to the design of the fuel to be burned in the lamp.
It is the object of the invention to improve the above paraffin lamp and its components, namely with respect to fuel bodies causes them to alter their shape and which holds a supply of fuel bodies and permits automatic feeding of the fuel bodies to the flame area, as the first object of the invention, manufactured cost-effectively, as the second object of the invention, advantageously designed and combined fiber materials with a specially treated exterior sheath, as the third object of the invention, and specially designed wick holder (burner) to permanently prevent cracking residue deposits in the entire combustion zone (wick, wick holder and lamp container).
The first object is met according to claim 1 with at least one roller or upright body positioned above the container near the wick holder, or a disc of solid fuel positioned inside the container around the wick holder, so that the fuel of the rollers and upright bodies or of the disc, respectively, is melted by the flame and cover heat and collected by the container and/or the wick holder as supplementary fuel.
The second object is met according to claims 2 and 3 with a wick holder that can be manufactured easily and cost-effectively from a cut template in a bending process and can be easily positioned in the cover of the fuel container. The wick holder is suspended inside the container without direct heat transfer to the container bottom and has a good air conduction and heat transfer to the fuel and an optimum fuel transfer to the wick. Because of openings in its jacket, said wick holder furthermore permits a view of the remaining fuel despite the lamp cover.
The third object is met with the wick formed of twisted quartz fiber glass bundles that are conglutinated either along their exterior sheath or throughout according to claim 4, said wick having good absorption properties and a glow zone that travels downward for a lasting good burning performance of the non-combustible wick. When the wick goes out, it glows downward beyond the clogging-prone zone, i.e., practically up to the funnel end of the wick holder.
The third object is furthermore met with a non-combustible wick according to claim 18 having a core of an absorbing material, preferably quartz glass fibers, and surrounded by a metal wire coil and/or tube of quartz glass, with a gap provided as insulation between the upper combustion zone and the lower pre-heating and suction zone of the wick.
As a result of this gap, the flame is defined and specifically directed at the upper coil area, thus causing the flame to attain its high flame point. In this combustion zone the temperature reaches over 220.degree. C.
On one hand, the described gap prevents the flame from extending downward, so that it continuously remains only in the combustion zone with the high flame temperature, and on the other hand it produces an optimal (long) insulation area for the temperature transition from approx. 80.degree. C. to 220.degree. C. between the pre-heating and suction zone and the combustion zone.
The gap permits a certain thermal conductivity to prewarm the paraffin inside the wick which, however, has no adverse effect on the high flame temperature.
The combustion zone formed by the metal wire coil or the tube and delimited by the gap or insulation, respectively, is relatively long according to the desired height of the flame, so that the high temperatures in the combustion zone are maintained.
The lower part of the metal wire coil or the tube may, in addition to the gap in the coil or in lieu of the gap, also be provided with an insulation layer which has a high flame point and contributes to the
REFERENCES:
patent: 2504584 (1950-04-01), Ramos
patent: 2774235 (1956-12-01), Ruetz
patent: 3888620 (1975-06-01), Devon
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