JPH109578A - Gas combustion equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively hold an ignition relative implement at a predetermined position to a burner by bending a part of a mounting plate to form standing pieces and a cover, coating bases of lead wires of the implement with the cover, and supporting predetermined lengths of the wires by the cover. SOLUTION: A U-shaped fixed piece for mounting an ignition relative implement such as a thermocouple 1 or an ignition plug is provided at a mounting plate 3, and a guide 4 having a deformable peripheral edge 5 is provided. Part of the plate 3 is bent to provide opposed standing pieces 12 and a cover 14 made of an upper surface 13. The cover 14 is made of sheet metal. The edge 5 presses and caulks a groove 2 of the thermocouple 1 to be fixed. The cover 14 having the pieces 12 is supported at a predetermined length by the pieces 12 for bending lead wires 11 drawn from the thermocouple 11 to the bottom of the plate 3 and the cover 14 made of an upper surface 13 as an opposed surface of the bottom of the plate 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-fired apparatus provided with an ignition-related device such as a thermocouple facing a burner and having a lead, or a spark plug.

[0002]

2. Description of the Related Art Conventionally, an apparatus for mounting an ignition-related tool of this type is disclosed in Japanese Patent Application Laid-Open No. 5-687. 6 and 7 show the structure of a conventional ignition-related device mounting device. That is, in the same figure, a groove 2 is provided on the outer peripheral portion of the thermocouple 1, and the groove 2 of the thermocouple 1 is engaged with the guide 4 provided on the mounting plate 3 so that the deformable peripheral portion 5 is deformed and swaged. The configuration was such that the thermocouple 1 was fixed.

[0003] In the present specification, a thermocouple and a spark plug are collectively defined as an ignition-related device. Ignition-related components are important components for combustion equipment, such as flame detection during combustion and discharge spark at the time of ignition, and are required to be securely fixed and held at proper positions. Therefore, there has been a configuration in which the ignition-related device is pressed with screws and a means for fixing using a dedicated pressing member. However, in view of the increase in the number of parts and the assembling property, in recent years, simple means for fixing the thermocouple 1 by simple caulking due to deformation of the peripheral portion 5 is becoming mainstream.

[0004]

In this apparatus for mounting an ignition-related device, as shown in FIG. 7, a cooker 9 installed on a table 8 is heated and cooked by a burner 7 installed in a firing chamber 6. Detects the flame from the burner 7 as the flame detector 10
When the flame detection unit 10 moves in the direction A or B in FIG. 7 when confirming ignition, a predetermined thermoelectromotive force cannot be obtained, which affects the ignition and combustion performance of the burner 7. That is, the distance X from the burner 7 to the flame detector 10 must be maintained at a predetermined distance. On the other hand, in the configuration of the conventional mounting plate for the ignition-related equipment, the lead wire 11 drawn from the thermocouple 1 is usually made of a hard steel material such as a piano wire. In the after-sales service, the lead wire 11 is pulled with a strong force by 360 degrees in the C direction and the D direction as shown by the dotted lines in FIGS.
° The thermocouple 1 may be drawn around in any direction, and is easily fixed by the deformable peripheral portion 5 when an external force is directly applied to the thermocouple 1, so that a caulking failure occurs and the flame detector 10 maintains a predetermined distance X. It becomes difficult to do.

As described above, the problem of the prior art that the present invention attempts to solve is that the distance between the ignition-related device and the burner is such that the lead wire of the ignition-related device is pulled during production, repair, or use. , And changes to a predetermined distance.

[0006]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides an apparatus for mounting an ignition-related device, comprising: a cover formed by bending a part of a mounting plate; The lead wire drawn out of the ignition-related device is surrounded and supports a certain length of the lead wire.

According to the present invention, the lead wire can be supported by a fixed length from the mounting portion of the ignition-related device, so that even if the lead wire is drawn from any direction with a strong force, it can be directly attached to the peripheral portion where the ignition-related device is fixed. Since no external force is applied, the ignition-related device can be reliably held at a predetermined position with respect to the burner.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a cover consisting of a standing piece and an upper surface formed by bending a part of a mounting plate covers a lead wire drawn from an ignition-related device, and a lead wire. It supports the fixed length of the lead wire, and can support the lead wire only a fixed length from the mounting part of the ignition related equipment, so if you pull the lead wire from any direction with strong force, the ignition related equipment is fixed directly. No external force is applied to the peripheral edge. Therefore, the predetermined interval between the ignition-related device and the burner does not change.

Further, the ignition-related device is a thermocouple, and a flame detecting portion is provided at a tip of the thermocouple at a predetermined interval with a part of the burner.

The ignition-related device is a spark plug, and a discharge electrode is provided at a tip of the spark plug so as to face a part of the burner at a predetermined interval.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. Parts having the same functions as in the conventional example are denoted by the same reference numerals.

FIG. 3 is a perspective view of the mounting plate before the thermocouple 1 is mounted. The mounting plate 3 is fixed to a peripheral wall of a burner of a table stove or a support plate of the burner by a screw having a thickness of 1 to 2 mm. The mounting plate 3 is provided with a U-shaped fixing piece for mounting an ignition-related device such as a thermocouple or a spark plug, and a guide 4 having a deformable peripheral portion 5 is provided. . In addition, a part of the mounting plate 3 is bent so as to be provided with an opposing standing piece and a cover part 14 composed of an upper surface 13,
The cover 14 is made of sheet metal.

FIGS. 1 and 2 show the thermocouple 1 attached to the mounting plate 3. The thermocouple 1 having a flame detector 10 is shown in FIGS.
Is provided with a groove 2 in its outer peripheral portion, and the groove 2 of the thermocouple 1
And the guide 4 of the mounting plate 3 are engaged to temporarily fix the thermocouple 1. When the mounting plate 3 and the thermocouple 1 are engaged with each other, if the cover 14 is previously inclined so that the erecting piece 12 is inclined upward to provide a gap between the mounting plate 3 and the lower surface, the thermocouple 1
Can be easily inserted into the insertion hole 15 shown in FIG. After the thermocouple 1 is engaged with the guide 4, the portion consisting of the peripheral portion 5 and the upper surface 13 facing the bottom surface of the cover portion 14 including the upstanding piece 12 is simultaneously deformed, and the peripheral portion 5 is formed by the groove of the thermocouple 1. Hold down 2 and fix with caulking,
The covering portion 14 having the standing piece 12 is a covering portion 1 composed of the rising piece 12 that bends the lead wire 11 drawn out of the thermocouple 1 with respect to the bottom surface of the mounting plate 3 and the upper surface 13 facing the bottom surface.
4, it is possible to enclose to support a certain length.

The thermoelectromotive force generated by the flame detector 10 for detecting the flame emitted from the burner and required to secure and maintain a certain distance from the burner is drawn from the thermocouple 1. And transmitted to the solenoid valve. If the distance X of the flame detector 10 from the burner 7 is irregular, the solenoid valve does not operate correctly and the raw gas continues to be ejected when the flame goes out due to ignition, combustion failure, wind, etc., which is preferable. Absent. The lead wire 11 for supplying a thermoelectromotive force to the solenoid valve is usually made of a hard steel material such as a piano wire and is drawn out in the longitudinal direction of the thermocouple 1 and is bonded to the thermocouple 1 by brazing or the like, and the lead wire 11 is routed. Is transmitted directly to the thermocouple 1.
As shown by the dotted line in the figure, if the thermocouple is pulled
It is highly conceivable that the fixing failure may occur and the distance X of the flame detector 10 may also change. Therefore, a part of the mounting plate 3 is bent with respect to the bottom surface, and a cover part 14 composed of the standing piece 12 and the upper surface 13 surrounds the lead wire 11 drawn out of the thermocouple 1, and the cover part 14 is 10 mm or more. And can cover the lead wire 11 in a certain section.

FIG. 4 is a side view of the thermocouple 1 when it is mounted. FIG. 4 shows a case where the lead wire 11 is pulled up and down. The lead wire 11 is supported at a portion facing the bottom surface of the mounting plate 3,
When pulled downward, the lead wire 11 is supported by the bottom surface of the mounting plate 3. FIG. 5 is a top view when the thermocouple is attached. In a state where the lead wire 11 is pulled left and right, when the lead wire 11 is drawn upward in the drawing, the lead wire 11 is supported by the standing pieces 12,
Standing piece 1 also bent in L-shape when pulled down
2 supports the lead wire 11.

In the above configuration, even when the lead wire 11 is drawn 360 degrees in all directions at the time of assembling at a factory or the like, as shown by a dotted line in the figure, the lead wire 11 can be connected to the end of the standing piece 12 and the mounting plate 3. The lead wire 11 that comes into contact with the bottom surface and is drawn out of the thermocouple 1 has a configuration in which bending stress is not applied to a certain section, so that the drawing force is not transmitted to the thermocouple 1, and the thermocouple 1 is not properly fixed or has a flame. The fluctuation of the distance X between the detection unit 10 and the burner 7 does not occur.

Although a thermocouple has been described in the present embodiment, it goes without saying that the same operation as in the present embodiment can be obtained by using a spark plug instead of the thermocouple.

[0018]

As described above, according to the present invention, even if an external force such as being drawn in all directions at the time of assembling or repair service is applied, the portion where the ignition-related device is fixed is directly applied. Since no force is applied, the movement of the ignition-related device is suppressed, and the ignition-related device can be reliably held at a predetermined position, and can be prevented from being mounted in an unsafe state.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a gas combustor using a device for mounting an ignition-related device according to an embodiment of the present invention.

FIG. 2 is a side view of the mounting device.

FIG. 3 is a perspective view of a main part of the mounting device before a thermocouple is mounted.

FIG. 4 is a side view of the mounting device after a thermocouple is mounted.

FIG. 5 is a top view of the mounting device after a thermocouple is mounted.

FIG. 6 is a perspective view of a main part of a conventional ignition-related device mounting device.

FIG. 7 is a side view of the mounting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thermocouple 2 Groove 3 Mounting plate 4 Guide 5 Peripheral edge 6 Burner 7 Burner 8 Standing piece 10 Flame detecting section 11 Lead wire 12 Standing piece 13 Upper surface 14 Covering portion

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kaoru Soga 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] An ignition-related device is attached to a mounting plate, and a part of the mounting plate is bent to form a cover comprising opposing standing pieces and an upper surface, and a base of a lead wire of the ignition-related device is covered by the cover. A gas-fired device having an ignition-related device surrounded by a cover and supporting a predetermined length of a lead wire with the cover. 2. The gas combustion apparatus according to claim 1, wherein the ignition-related device is a thermocouple, and a flame detecting portion is provided at a tip of the thermocouple at a predetermined interval with a part of the burner. 3. The gas combustion apparatus according to claim 1, wherein the ignition-related component is a spark plug, and a discharge electrode is provided at a tip of the spark plug at a predetermined interval with a part of the burner.