JPS61161326A - Catalytic combustion device - Google Patents

Abstract

PURPOSE:To provide a catalytic combustion device in which a positive control over a combustion can be performed by a method wherein grooves having a larger diameter than widths of O-rings are provided in a main body nozzle provided with O-rings and in a control nozzle. CONSTITUTION:The width of groove 17a has such a length as that O-ring 14 may not abut against both end surfaces of the groove even if the main body nozzle 17 is slid in an opening 3, and a width of groove 18a also corresponds to such a length as that O-ring 15 may not abut against both end surfaces. With this arrangement, O-ring 14 shows a smaller area abutting against the main body nozzle 17 than that abutting against the opening 3, further shows in inside sliding operation between it and the main body nozzle 17 and so a force required for sliding the main body nozzle 17 becomes smaller than that required for performing an outside sliding operation. Similarly, O-ring 15 may also show in inside sliding movement between it and the control nozzle 18 and then the force required for performing a sliding movement of the control nozzle 18 becomes low. Therefore, it is possible to slide both control nozzle 18 and the main body nozzle 17 sufficiently even with a low force in which the control valve 9 is extended, resulting in that the positive control over gas flow rate can be attained between the shutter valve 7 and the main body nozzle 17.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a catalytic combustion device used in hair curlers, irons, etc.

BACKGROUND OF THE INVENTION A conventional catalytic combustion device for a hair curler will be explained with reference to FIG.

In FIG. 2, reference numeral 1 denotes a tank containing liquefied fuel 2 and having a cylindrical opening 3. In the opening 3, a vaporizer 4 is installed on the upstream side in the direction of flow of the liquefied fuel 2, and a cylindrical evaporator 4 is installed on the downstream side in the flow direction of the liquefied fuel 2. A main body nozzle 6 is provided. Inside this main body nozzle 6, a shutter pulp 7 which is larger than the inner diameter of the main body nozzle 5 is provided on the upstream side in the flow direction of the liquefied fuel 2 and outside the main body nozzle 5, and the downstream half is cylindrical. A control nozzle 6 is provided. At the tip of the control nozzle 6, an injector 8 for mixing air into the flow of the liquefied fuel 2 and a control pipe 9 having a high coefficient of thermal expansion are provided. Further, a main body 10 is provided on the opening 3 side of the fuel tank 1, and a thermobase 1 containing a control pipe 9 is provided in this main body 1Q.
1 is fixed. The thermobase 11 has its tip fixed to the control pipe 9 and is provided with a catalytic burner 12 on its side. On the other hand, the tank 1 is biased toward the catalytic burner 12 by the first spring 13 of the five main body nozzles, and the control nozzle 6 is connected to the first spring 13 provided between the protrusion 6a of the control nozzle 6 and the cut-off part 6a of the main body nozzle 6. The main body nozzle 5 is biased toward the catalyst 12 by the spring 13a of No. 2. Furthermore, a first O-ring 1 is provided between the opening 3 and the main body nozzle 6.
4, and a second O-ring 15 seals between the main body nozzle 6 and the control nozzles.

Further, a switch 16 provided on the side surface of the main body 1o is connected to the main body nozzle 5.

Next, the operation of the above configuration will be explained. First, switch 1
6 slides, the main body nozzle 6 connects to the catalytic burner 12.
Since it slides to the side and a gap is created between it and the shutter pulp 7, the liquefied fuel 2 in the tank 1 is vaporized by the vaporizer 4 in the opening 3. This vaporized fuel is 0/4
seals between the opening 3 and the main nozzle, so it passes between the control nozzle 6 and the main nozzle 5 through the gap between the shutter pulp 7 and the main nozzle 5, and from the middle due to the 0s/g 15. It passes through the control nozzle θ and is ejected to the injector 8, where it is mixed with air. The vaporized fuel mixed with air passes through the control pipe 9 and is supplied to the catalyst nozzle 12, where it is combusted.

When combustion occurs in the catalytic burner 12, the control pipe 9 thermally expands, but the pace pipe 11 does not expand thermally at all, so the control nozzle is biased toward the catalyst 12 via the spring 13 and the spring 13a. 6 is slid toward the tank 1 side, and the gap between the shutter pulp 7 and the main body nozzle 6 becomes smaller. Then, the amount of vaporized fuel passing through the gap between the shutter pulp 7 and the main body nozzle 6 becomes smaller, and the catalytic burner 12
combustion is controlled.

Problems to be Solved by the Invention However, in the above configuration, the O-ring 14 slides between the opening 3 and the O-ring 15 slides between the main body nozzle 5. However, since a large amount of force is required for sliding and the force of the control pipe 9 is small, there is a problem in that combustion control becomes impossible.

In view of the above problems, the present invention provides a catalytic combustion device that can reliably control combustion.

Means for Solving the Problems In order to solve the above problems, the catalytic combustion apparatus of the present invention
A groove portion wider than the QIJ ring is provided in the main body nozzle and the control nozzle in which the ring is provided.

Operation With the above configuration, each O-ring slides between the main body nozzle and the control nozzle, and the force required for sliding is reduced.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. Here, the same members as in the conventional example shown in FIG. 2 are given the same numbers, and their explanations will be omitted.

In FIG. 1, 17 is a main body nozzle provided in the opening of the fuel tank 1, and a groove 17a is provided on the outer periphery of the main body nozzle, and this groove 17a is sealed with a KO ring 14 provided therein. The width of the groove 17a is such that even when the main body nozzle 1 slides within the opening 3, the O-ring 14 does not come into contact with both end surfaces thereof. Further, a control nozzle 18 is provided within the main body nozzle 17, and a groove 18a is provided on the outer periphery of the control nozzle 18, and a KO ring 15 is provided in this groove 18a for sealing.

The width of the groove portion 18a is such that the control nozzle 18 is the same as the main body nozzle 17.
The length is such that the QIJ ring 15 does not come into contact with both end surfaces even if it slides inside.

With the above configuration, the area of the O-ring 14 that contacts the main body nozzle 17 is smaller than the area that contacts the opening 3, and the O-ring 14 slides between the 10 and the main body nozzle 17. The force required to slide the main body nozzle 17 is much smaller than in the example. Similar KO ring 15
The force required for sliding of the control nozzle 18 is reduced when the control nozzle 18 is slid inwardly.

As is clear from the above, it becomes possible to slide the control nozzle 18 and the main body nozzle 17 sufficiently even with a small force caused by the extension of the control pipe 9, and the gas flow rate between the Schacter pulp 7 and the main body nozzle 17 can be controlled. Become certain.

Effects of the Invention As is clear from the description of the embodiments above, the catalytic combustion device of the present invention has a groove portion having a width larger than the width of the O-ring in the control nozzle and the main nozzle, and an O-ring is provided in this groove portion. In particular, much less force is required to slide the main nozzle and control nozzle, resulting in more accurate temperature control.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a catalytic combustion device according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional catalytic combustion device. 14.15...Q ring, 17...Body nozzle, 1 a, 18a...Groove, 18...
...Control nozzle. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A first O-ring provided between the main body nozzle and the tank opening, the fuel tank having a cylindrical main body nozzle provided at the tank opening, and a control nozzle sliding within the main body nozzle; A second groove, which is larger in width than the thickness of the first O-ring and is provided between the first groove of the main body nozzle to which the first O-ring is attached, and the control nozzle and the main body nozzle.
A catalytic combustion device comprising: an O-ring; and a groove portion of the control nozzle having a width larger than the thickness of the second O-ring and to which the second O-ring is attached.