Catalytic combustion arrangement
AssigneesMatsushita Electric Industrial Co., Ltd., Osaka Gas Co., Ltd.
InventorsEiji Murai, Tomiji Suzuki, Hiroki Sadamori, Kazuhito Taguchi
Life of this patent
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Abstract
The disclosure is directed to an improved catalytic combustion arrangement for use, for example, in a gas stove or the like, which has a heat insulation diffusion layer is provided in a catalytic mat layer for the improvement of combustion rate around the catalytic mat, and, through employment of two sets of thermo-couples, a heating burner for the catalytic mat is adapted to burn only during starting of combustion, and to be automatically extinguished upon arrival at a steady combustion state for continuous combustion only by the catalytic mat, with a simultaneous indication of such combustion.
Claims3
A catalytic combustion arrangement which comprises:
- a catalytic mat layer having a catlytic mat which supports a catalyst;
- a casing having said catalytic mat layer mounted therein;
- means for supplying a fuel into said casing;
- a safety valve in said fuel supplying means for controlling the flow of fuel and having an electromotive actuating means;
- a preheating burner directed at said catalytic mat for heating said catalytic mat;
- means connected to said preheating burner for feeding fuel to said preheating burner;
- a control valve in said fuel feeding means for controlling the flow of fuel and having an electromotive actuating means;
- a first set of thermo-couples, one of which is disposed adjacent to the edge of said catalytic mat and the other of which is disposed adjacent to said preheating burner, said thermo-couples in said first set being connected in series with each other in a direction for adding the electromotive force-producing currents produced therein by the heating and coupled with said actuating means of said safety valve for, when the amount of electromotive force-producing currents is sufficient, maintaining said safety valve open by electromotive force;
- and
- a second set of thermo-couples, one of which is disposed adjacent to the edge of said catalytic mat and the other of which is disposed adjacent to said preheating burner, said thermo-couples in said second set being connected in series with each other in a direction for cancelling the electromotive force-producing currents produced therein by the heating and coupled with said actuating means of said control valve for, when the amount of electromotive force-producing currents is sufficient, maintaining said control valve open only by electromotive force.
Dependencies are inferred from the claim text.