JPS6135898B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a catalyst element formed by winding a stack of a tape-shaped cloth catalyst and a corrugated metal spacer formed from a thin stainless steel plate.

For example, as shown in Figure 1, such a catalyst element is placed in a deodorizer 2 installed directly above the combustion tube 1 of a reflective kerosene stove, and decomposes and purifies CO and THC generated during combustion in the kerosene stove. It is used as such.

The internal structure of this deodorizer 2 is shown in FIG. The catalyst element 3 is attached to the upper part of the deodorizer 2.

The catalytic element 3 utilized in this way is
As shown in the figure, a cross catalyst 4 and a metal spacer 5 formed into a corrugated stainless steel plate were wound in a stacked manner to form a structure as shown in FIG. 4.

However, with the above configuration, the fifth
As shown in the figure, the cross catalyst 4 and the metal spacer 5 tend to slide against each other, causing their relative positions to shift easily, and the catalyst is vulnerable to shocks such as vibrations and drops.

The present invention eliminates the drawbacks of the prior art as described above.

Embodiments of the present invention will be described below with reference to FIGS. 6 to 10.

First, in FIG. 6, a hole 6 is formed by piercing a pin into the tip of a convex portion of a metal spacer 5 formed by forming a stainless thin steel plate into a corrugated shape, and a burr formed on the outer surface is formed by this hole 6. 7.

That is, as shown in FIG.
This is intended to prevent the burrs 7 and the metal spacer 5 from coming into contact with each other and causing the burrs 7 to bite into the eyes of the cloth catalyst 4, thereby preventing relative positional deviation between the cloth catalyst 4 and the metal spacer 5.

The dimensions of the burr 7 of the metal spacer 5 in the present invention are hemispherical with an outer diameter of 1.5 mm and a height of 0.7 mm in accordance with the thickness and mesh size of the cloth catalyst 4 used. If , these dimensions naturally need to be changed, and the approximate dimensions, i.e., the outer diameter and height dimensions of the burr 7, are appropriate to be 60 to 90% of the mesh size and thickness of the cross catalyst 4, respectively. .

As shown in Fig. 8, a pair of gears 8 are installed with a distance between the axes of the pitch circle diameter + 0.7 to 1.0 mm, and a pin 9 is attached to the tip of the tooth. Depending on the implanted device, a metal spacer 5 with burrs 7 can be obtained.

In addition to forming the burr 7 with the pin 9, it is also possible to provide a protrusion 10 by bead forming as shown in FIG. 9 or projection forming as shown in FIG.
These methods are somewhat less effective, but can achieve the purpose of the present invention.

Since the catalyst element of the present invention is configured as described above, the relative position of the cross catalyst and the metal spacer is fixed, and it is stable even when subjected to vibrations or shocks, making it possible to achieve stable quality. It has many advantages such as simple structure, excellent productivity, and can be provided at low cost, and is of great industrial value.

[Brief explanation of the drawing]

Figure 1 is a front view of a reflective kerosene stove that uses a catalyst element, Figure 2 is a sectional view of the same deodorizer, Figure 3 is an exploded perspective view of the main parts of a conventional catalyst element, and Figure 4. is a top view of the same catalyst element, FIG. 5 is an enlarged view of the same essential parts, FIG. 6 is a cross-sectional view of the main parts of a metal spacer in an embodiment of the catalyst element of the present invention, and FIG. 7 is a main part of the same catalyst element. FIG. 8 is an explanatory view showing the processing steps of the same metal spacer, FIG. 9 is a perspective view of the main part showing a metal spacer of another example, and FIG. 10 is a metal spacer of still another example. FIG. 4...Cross catalyst, 5...Metal spacer, 6...
...hole, 7...burr, 10...protrusion.

Claims (1)

[Claims] 1. In a catalyst element constructed by winding a cross catalyst laminated with a corrugated metal spacer, a burr or protrusion that is generated during hole formation is provided at the tip of the protrusion of the corrugated metal spacer, and this burr or protrusion is removed from the cross. A catalyst element characterized by fixing the relative position of a cross catalyst and a metal spacer by hooking it onto the catalyst.