Fuel and related compositions – Liquid fuels – Organic oxygen compound containing
Patent
1998-07-23
2000-09-19
McAvoy, Ellen M.
Fuel and related compositions
Liquid fuels
Organic oxygen compound containing
44519, 431320, C10L 100, F23D 324
Patent
active
061205664
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a liquid fuel for combustion appliances, such as lighters provided with a combustion wick. This invention also relates to a combustion appliance using the liquid fuel.
This invention particularly relates to a composition of the liquid fuel for use in combustion appliances, such as lighters for smoker's requisites and other types of lighters, which liquid fuel produces a combustion flame having a high visual perceptibility and eliminates the problems in that, in cases where alcohols are employed as the fuels, a colorless combustion flame is produced and cannot easily be perceived visually.
BACKGROUND ART
Ordinarily, as fuels in combustion appliances, such as lighters for smoker's requisites, other types of lighters, torches, and illumination devices, alcohol fuels, such as ethyl alcohol, petroleum benzine types of benzine fuels, or liquefied gas fuels, such as butane gas or propane gas, have heretofore been utilized.
The performances, the levels of convenience of handling, and the design structures of the combustion appliances vary in accordance with the kinds of the fuels used, and the fuels have their own features.
For example, in cases where the benzine fuels, which are mixtures of petroleum benzine types of hydrocarbon compounds, are used, since such a fuel is the mixture of the compounds having different boiling points, the problems described below occur. Specifically, a benzine constituent having a low boiling point volatilizes at the initial stage of use, at which the combustion appliance is lighted, and the constituent which volatilizes successively shifts to hydrocarbons having high boiling points. Therefore, the composition of the fuel, which remains in the combustion appliance, changes with the passage of the combustion time, and a change in flame length occurs. The same problems are also encountered with gasoline. Also, since benzine has a high volatility, the combustion appliance using benzine must have an enclosed structure for reducing the volatilization of benzine from a fuel storage region and the portion of a combustion wick. If the enclosure is insufficient, the fuel will be lost due to volatilization, and the operation for replenishing the fuel must be carried out very frequently. Further, benzine and gasoline have specific odors, which some persons dislike.
The liquefied gas fuels have a high gas pressure at temperatures falling within the range, in which the combustion appliance is used, and therefore the vessel for storing the fuels must have a pressure-resistant structure. Also, the flame length varies in accordance with variations in gas pressure. In particular, the liquefied gas fuels have the characteristics such that their gas pressures markedly vary logarithmically with respect to temperatures, and therefore the problems occur in that the flame length changes markedly, depending upon temperatures. In order for the change in flame length to be reduced, a special design countermeasure for carrying out temperature compensation for a fuel feeding mechanism of the combustion appliance must be taken. Therefore, the structure cannot be kept simple, and the cost cannot be kept low.
As for the alcohol fuels, lower monohydric alcohols, such as ethyl alcohol, methyl alcohol, and propyl alcohol, are liquids at normal temperatures and have comparatively low vapor pressures. Therefore, the enclosure with respect to the fuel storing region and the combustion wick may be carried out with a comparatively simple enclosed structure such that the alcohols may not volatilize. Accordingly, the structure of the combustion appliance can be kept simple, and the cost can be kept comparatively low. However, the alcohol fuels have the problems in that their combustion flames are colorless and cannot easily be perceived visually, and therefore the lighting and burning state cannot be confirmed easily at a light site.
Various techniques for coloring the flames produced by the alcohol fuels described above have heretofore been proposed. In a first technique, a fla
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European Patent Office Search report dated Mar. 3, 2000.
Mifune Hideo
Nakamura Yasuaki
Tsukamoto Takashi
McAvoy Ellen M.
Tokai Corporation
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