JPS6222746Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a mat used in a catalytic burner.

Catalytic burners burn gas and can be used, for example, in gas stoves. The combustion gas is diffused more uniformly in the pine layer of such a catalytic burner, reducing heat transfer due to contact between the pine layer and the surroundings of the storage box that houses the pine layer, and at the same time increasing the heat retention effect of the entire pine layer. The purpose is to

Conventionally, there have been no mats of catalytic burners in which the thickness and density of the heat-retaining diffusion layer has been changed, and the mat has only one layer.

FIGS. 1 and 2 show the structure of a catalyst mat in an embodiment of the present invention.

A heat-resistant wire mesh 2, a mat 3 supporting a catalyst, a heat-insulating diffusion layer 5, a diffusion heat-insulating layer 4, and a receiving plate 7 having through holes are stacked one on top of the other in order from the top, and the entire mat layer is stored in a storage box 6. Then, it is fixed with a cover 1 that presses the entire periphery of the heat-resistant wire mesh 2 from above.

The combustible gas passes from inside the storage box 6 to the receiving plate 7, the diffusion heat insulation layer 4, the heat insulation diffusion layer 5, the mat 3, and the heat-resistant wire mesh 2 in this order, and when passing through the mat 3, the combustible gas is completely combusted. It is something.

For this reason, the activation of the catalyst decreases when the temperature decreases, so the heat retention layer 4 and the heat retention diffusion layer 5 are used to retain the combustion heat and to uniformly diffuse it.

In addition, the periphery of the pine layer comes into contact with the storage box 6 for attachment, and is inevitably more easily cooled than the central area, so the area that comes into contact with the storage box 6 is made particularly dense to dilute the combustion gas and as much as possible. It is constructed to avoid direct contact of the catalyst mat layer with the cooling part.

The heat-retaining diffusion layer 5 is mainly for heat retention and has a thickness about half that of the diffusion heat-retaining layer 4 and a density about twice that of the diffusion heat-retaining layer 4. The diffusion heat-retaining layer 4 is mainly for diffusion.

As described above, according to the present invention, gas diffusion becomes uniform due to the provision of each layer, and the catalyst mat is not cooled by the storage box.

Furthermore, the part of the mat that contacts the storage box has a higher density than the other parts, so the catalyst mat is not cooled by the storage box, allowing stable combustion. Furthermore, the part of the pine that comes into contact with the storage box has a higher density than the other parts, so it is easier to install and has a uniform density than pressing with a presser to compress it and increase the density. Can be done. Furthermore, since the cover provided around the heat-resistant wire mesh located on the surface of the mat simply covers the wire mesh, installation is simplified.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a catalytic burner according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the same. DESCRIPTION OF SYMBOLS 1... Cover, 2... Heat-resistant wire mesh, 3... Mat, 4... Diffusion heat retention layer, 5... Heat retention diffusion layer, 6...
...storage box, 7...receiver plate.

Claims (1)

[Scope of utility model registration request] A heat-resistant wire mesh, a mat supporting a catalyst, a heat-insulating diffusion layer, a diffusion heat-insulating layer, and a receiving plate are stacked and integrated in order from the front side, and the heat-resistant wire mesh is placed on the surface of the integrated product, and the front opening of the storage box is opened. A catalytic burner in which a portion of the mat that is attached and comes into contact with the storage box has a higher density than the rest of the mat itself, and the periphery of the heat-resistant wire mesh is covered with a cover.