JPH031065Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a gas ignition catalyst that can be incorporated as a heating element in gas fuel appliances such as gas lighters and gas stoves.

BACKGROUND ART Conventionally, as this type of gas ignition catalyst, an oxidation reaction catalyst formed of a porous solid material such as alumina oxide has been generally used.

Problems to be Solved by the Invention However, with this porous solid catalyst for oxidation reactions, the oxidation reaction occurs only at the location where gas acts from the jet nozzle of the gas fuel appliance. For example, if the tip of the gas jet nozzle is placed so as to correspond to the approximate center of the oxidation reaction catalyst, the oxidation reaction will occur in the center, but not in the periphery, so the ignition action surface will be localized. Not only is the ignition efficiency poor, but the gas combustion efficiency is also poor.

Means for Solving the Problems In the gas ignition catalyst according to the present invention, the ignition surface is formed of a porous solid oxidation reaction catalyst, but the ignition surface is formed on the back side of the oxidation reaction catalyst on the side where gas is injected from the jet nozzle. It is constructed so that flocculent oxidation reaction catalysts are laminated together.

Function: In the structure of this gas ignition catalyst, the cotton-like oxidation catalyst causes an oxidation reaction that is uniform throughout, and the oxidation reaction acts on the porous solid body on the ignition surface, resulting in a uniform oxidation reaction as a whole. Becomes capable of igniting.

Embodiments The following description will be made with reference to the accompanying drawings.

This gas ignition catalyst is formed as a multilayer body in which a porous solid oxidation reaction catalyst 1 and a cotton-like oxidation reaction catalyst 2 are laminated together (see FIGS. 1 and 2). Among these oxidation reaction catalysts, the porous solid body 1 can be a honeycomb-shaped or randomly porous fired ceramic body such as Al ₂ O ₃ or cordierite, and the cotton-like body 2 can be silicon. Acid glass fiber etc. can be applied. This porous solid body 1 forms an ignition surface that applies heat to the object to be burned or heated, and the flocculent oxidation reaction catalyst 2 has a porous solid body so as to be located on the gas fuel injection side. It is integrally attached to the back side of the solid body 1.

The gas ignition catalyst constructed in this manner can be incorporated as a heating element in a gas lighter, gas stove, etc., and can be formed into a block or plate shape of an appropriate size depending on the form of the fitting.
When this catalyst A is incorporated into various gas appliances to function as a heating element, gas is supplied to the catalyst A from the jet nozzle B of the appliance, and the gas fuel C is exposed to sparks from the discharge nozzle and nichrome wire. It ignites due to heat generation, etc. At this time, the fuel gas flows within the flocculent oxidation reaction catalyst 2 while being dispersed throughout along the fiber structure, so that gas combustion occurs at least throughout the catalyst structure.
This combustion effect has a ripple effect on the entire surface of the porous solid body 1, and heat can be generated from the entire area of the solid body 1. This heat generation can ignite a cigarette or efficiently heat an object to be heated, and if the fuel gas continues to be ejected, gas combustion can be sustained.

In the above-mentioned embodiment, the porous solid body 1 and the flocculent oxidation reaction catalyst 2 were formed in two layers, but the flocculent oxidation reaction catalyst 2 was sandwiched in a sandwich pattern to form a porous solid body. It is also possible to form three layers of layers 1 and 3 (see Figures 4 and 5). In this case, the oxidation reaction catalyst 2 laminated in the innermost layer may be formed of the same material as that forming the ignition surface, or may be formed into a porous solid body of a different material. In this catalyst structure, the solid body 3 in the innermost layer receives the fuel gas intensively and can conduct it to the intermediate flocculent catalyst 2 so as to distribute it evenly over the entire surface. This will prevent fuel gas from scattering even if installed in Furthermore, if a powdered oxidation reaction catalyst such as alumina is attached to the porous solid bodies 1 and 3, including the inside of the pores or the surface thereof, the contact area with the gas can be increased and the reaction efficiency can be improved.
This powdered oxidation reaction catalyst can be dispersed before firing the porous solid bodies 1 and 3, and then fixed on the solid bodies 1 and 3 to be subjected to the firing process.

Effects of the invention As described above, according to the catalyst structure for gas ignition according to the invention, it is possible to efficiently ignite gas fuel, and moreover, since the ignition surface is formed of a porous solid material, Even if it comes into contact with a burnt object or a heated object, it will not be deformed or worn out.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the catalyst according to the present invention, Fig. 2 is a side sectional view of the catalyst, Fig. 3 is an explanatory view showing the exothermic action of the catalyst, and Fig. 4 is another embodiment. FIG. 5 is a perspective view of the catalyst according to the example, and FIG. 5 is a side sectional view of the same catalyst. 1, 3: Catalyst for oxidation reaction of porous solid body, 2:
Catalyst for oxidation reaction of flocculent material.

Claims (1)

[Scope of utility model registration request] A gas ignition catalyst structure characterized in that an ignition surface is formed of a porous solid oxidation reaction catalyst, and a cotton-like oxidation reaction catalyst is integrally laminated on the back side of the ignition surface.