KR20030076247A - Gas combustion device - Google Patents

Abstract

PURPOSE: A gas combustion device is provided to securely fix a flame-sensing unit to a predetermined position by simple assembling, without needing high dimensional accuracy and improve manufacture yield of manufactured goods. CONSTITUTION: In a gas combustion device, a flame-sensing unit(21) is fixed to an attaching member(1b) comprising a horizontal part(2) and a slant part(3) bent-up upward from the horizontal part to a burner body(10). The upper part of the flame-sensing unit is protruded from the slant part. A stone strip(9b) bent up toward the burner body is formed to the slant part of the attaching member. A groove(23) for positioning work is formed to the outer periphery of the flame-sensing unit and the groove is fitted into at least one of narrow fitting pieces(6,8). The front end of the stone strip comes in contact with the outer peripheral wall of the burner body.

Description

Gas Combustion Device {GAS COMBUSTION DEVICE}

The present invention relates to a gas combustion device in which a flame detection means for operating a safety valve in a gas cock is arranged near the burner body. More specifically, the present invention relates to a gas combustion apparatus which prevents malfunction of a safety valve by arranging the flame detection means more reliably at a predetermined position.

A number of proposals have been made in the past for the attachment structure of the thermocouple TC, which is one of the flame detection means disposed in the vicinity of the burner body in the gas combustion apparatus. For example, Japanese Patent Application Laid-Open No. 11-264544 forms an insertion hole through which an upper portion of a TC is inserted into a burner body, inserts a TC into an insertion hole formed in an attachment portion of a separate mounting bracket, and inserts an insertion hole. An attachment structure of TC is disclosed, in which an elastic stone piece cut out at the edge of a surface is brought into firm contact with an outer surface of a lower surface of a TC. Similar attachment structures of TC are disclosed in Japanese Patent Laid-Open No. 2000-283414. However, in these attachment structures, since the insertion hole is drilled in the burner body, the manufacturing cost increases. In addition, it is difficult to say that the attachment workability is excellent because the TC must be inserted from the lower side of the attachment bracket during the attachment work of the TC.

In Japanese Patent Laid-Open No. 8-135965, the upper and lower pieces having a U-shaped cutout are formed in the holder of the TC, and the width dimension of the slit groove formed around the TC is formed on one side of the lower piece. A device for attaching a TC is disclosed, in which a lower piece is inscribed in a slit groove with a step, and the TC is fitted to the holder by a fastener. However, in this attachment device, the accuracy of the step size is required, and if dispersion occurs in the step size during the processing of the holding tool for forming the step, there is a problem that the tip of the TC tends to be inclined toward the step side at a predetermined position. .

On the other hand, the present applicant has adopted the attachment structure of the flame detection means as shown in FIG. 5 and FIG. 6 in the gas combustion apparatus which detects the presence or absence of the combustion flame of a gas burner, and operates a safety device. 5 is a plan view when the flame detection means is arranged on the gas burner main body on which the burner cap is placed, and FIG. 6 is a sectional view of FIG. 5 when the burner main body is fixed to the attachment frame.

5 and 6, a is a burner main body, and the air mixing pipe b is integrally formed. Burner cap (c) is placed on the burner body (a). d is flame detection means, and the positioning groove e is formed in the lower part. The flame detection means d is connected to the gas cock in which the electromagnetic safety valve is incorporated through the cord f. g is a fixing bracket for fixing the flame detection means composed of the horizontal portion and the inclined portion, and the horizontal portion and the inclined portion are bent at a predetermined angle θ. A pair of clamping pieces h and i are formed in the upper part and the lower part of the inclined part of the attachment bracket g, and a pair of engaging pieces j are formed in the both edges in the middle. The groove (e) is sandwiched by the holding piece (i) and the flame detection means (d) is fixed to the mounting bracket (g) by the pressing member (k) engaged with the locking piece (j).

As described above, in the conventional attachment structure of the flame detection means shown in Figs. 5 and 6, the positioning of the flame detection means is regulated by the bending angle θ formed by the attachment bracket. Therefore, in some cases, by means of dispersion of the bending angle θ at the time of bending during the manufacture of the fixing tool for fixing the flame detection means, the member to which the mounting bracket is fixed, specifically, a burner The dispersion | distribution of the dimension at the time of processing of the attachment frame for fixation of a main body generate | occur | produced the dispersion in the attachment position of the flame detection means with respect to a burner main body. The gas combustion device in which the flame detection means is not fixed at a predetermined position is treated as a defective product because the safety valve of the gas cock does not operate normally, resulting in a decrease in the production yield of the gas combustion device.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and does not require high dimensional accuracy for a fixing attachment bracket of a flame detection means arranged in a gas combustion device or a member to which it is fixed, and simple assembly. It is possible to reliably fix the flame detection means at a predetermined position by the operation, and to improve the production yield of the product.

Figure 1a is a perspective view of a mounting bracket for fixing the first flame detection means attached to the gas combustion apparatus of the present invention

Figure 1b is a perspective view of the mounting bracket for fixing the second flame detection means attached to the gas combustion apparatus of the present invention

Figure 2 is a plan view showing a state in which the second attachment bracket is attached to the burner body of the gas combustion apparatus of the present invention on which the burner cap is mounted;

3 is a cross-sectional view of Fig. 2 showing a state in which a burner body is fixed to an attachment frame thereof;

Figure 4 is a plan view showing a state in which the burner body is fixed to the attachment frame

5 is a plan view showing a state in which the flame detection means is attached to the conventional gas burner body on which the burner cap is placed;

6 is a cross-sectional view of Fig. 5 showing a state in which the burner body is fixed to the attachment frame thereof;

* Description of the symbols for the main parts of the drawings *

1-Mounting bracket 2-Horizontal part

3-slope 9-stone piece

10-Burner body 21-Flame detection means

In order to solve the above-mentioned problems, the present inventors have made thorough reviews, and formed a stone piece bent to the main body side of the burner in an attachment bracket for fixing the flame detection means, and the tip of the stone piece was formed on the outer circumferential wall of the burner body. By contacting, it has been solved the problem of the present invention.

That is, in the gas combustion apparatus which fixed the flame | sense detection means in the state which the upper part protruded from the inclination part to the mounting bracket which consists of the horizontal part and the inclination part bent upwards from the horizontal part to the burner main body side, It is characterized in that the stone piece bent toward the burner body side is formed on the inclined portion of the mounting bracket, and the tip of the stone piece is in contact with the outer circumferential wall of the burner body.

According to the present invention (invention according to claim 1), as described above, the stone piece is formed in the mounting bracket to which the flame detection means is fixed, and the tip thereof is brought into contact with the outer circumferential wall of the burner body. The position of the upper end part (heating part) of the flame detection means is set in close contact with the outer circumferential wall of the burner body. Therefore, since the arrangement position of the heat sensing portion of the flame detection means is mainly restricted by the length of the protrusion, the angle is compared with the positioning means of the conventional flame detection means, which simply depends on the angle θ formed between the horizontal portion and the inclined portion of the mounting bracket. Even if (θ) is slightly dispersed during processing, the attachment position of the flame detection means to the burner main body is not so dispersed but stabilized.

According to the invention of claim 2, since the protrusions are formed substantially parallel to the horizontal parts of the mounting brackets, the installation position of the flame detection means can be easily managed by managing the length dimension of the protrusions. Can be placed more reliably.

According to the invention of claim 3, since the protrusions are formed at the upper end of the inclined portion, the positioning of the flame detection means can be improved, and the dispersion of the positions can be prevented more effectively. Moreover, in invention of Claim 2, 3, the length of the protrusion piece from the inclination part to the contact position of the outer peripheral wall of a burner body does not become longer than necessary.

According to the invention according to claim 4, since the shape of the front end face of the stone piece is substantially matched to the shape of the outer circumferential wall of the burner body, the contact surface between the front end and the outer circumferential wall of the stone piece can be widened, so the attachment bracket to the burner body is It is easy to stabilize the fixing of.

According to the invention of claim 5, since the stone piece is made up of a pair of pieces, the tip of the stone piece comes into contact with two outer circumferential walls of the burner body, so that the installation position of the flame detection means with respect to the burner body can be easily stabilized. have. Furthermore, in the invention according to claims 4 and 5, the protrusions smoothly contact the outer circumferential wall of the burner body.

Embodiment of the Invention

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

In the gas combustion apparatus of the present invention, any flame detection means (hereinafter referred to as a flame detector) is not particularly limited as long as it can detect the flame. For example, a thermocouple, a flame rod, a thermocouple, or the like is used. Examples of the mounting bracket to which the flame detector is fixed include first and second mounting brackets having a structure as described later.

The first mounting bracket is composed of a horizontal portion and an inclined portion bent upward on the burner body side. The inclined portion is provided with a pair of clamping pieces for holding the body portion of the flame detector and projections for positioning the flame detector. And it is preferable to form a pair of engaging pieces for pressing the trunk | drum of a flame detector on a slope by the linear or plate-shaped press member. And the inclined portion is formed with a stone piece whose tip is in contact with the outer peripheral wall of the burner body.

The sandwich piece is bent at right angles to the burner body with respect to the inclined portion and is flat in the vertical direction. In order to fix the flame detector more stably, it is preferable to further form a separate holding piece on the inclined portion above or below the holding piece. The separate sandwich pieces are composed of a pair of pieces, which are bent at right angles to the burner body opposite to the inclined portion and are flat in the horizontal direction. The protrusion slightly protrudes from the burner body to the inclined portion. This projection is engaged with the positioning groove for the heat sensing portion formed in the outer circumference of the body of the flame detector to engage the flame detector on the inclined portion. Since the mounting bracket is preferably made of one sheet metal, a cutout is formed in the inclined portion, a sandwich piece is formed at both edges of the cutout, and a projection is formed at the bottom edge of the cutout. In addition, the engaging piece is bent at a right angle to the side opposite to the burner body with respect to the inclined portion and is flat in the vertical direction. In order to press the flame detector on the inclined portion with the pressing member, it is preferable that the engaging piece has a bent portion having an inverted L shape, for example, and both ends of the pressing member are engaged with the bent portion.

The protrusion piece is bent toward the burner body with respect to the inclined portion and is flat in the horizontal direction. This protrusion is preferably formed substantially parallel to the horizontal portion of the mounting bracket so that the distance from the inclined portion to the contact position of the outer circumferential wall of the burner body is not longer than necessary. For the same reason, it is preferable to form the projection piece on the top of the inclined portion, and it is particularly preferable to form the top edge of the inclined portion. One or more such protrusions can be formed.

In addition, it is preferable that the distal end face of the protrusion piece coincides with or almost coincides with the shape of the outer circumferential wall. For example, if the outer circumferential wall of the burner body is cylindrical in shape, the distal end face of the protrusion is curved in a concave shape. In this way, if the shape of both is coincided, the protrusions are smoothly contacted with the outer peripheral wall of the burner body, and the contact surface between the tip and the outer peripheral wall of the protrusion is wide, so that the mounting bracket can be easily and stably fixed to the burner body. have. In the case where a plurality of the projections are formed, it is preferable that the tip end surface of the projections is in point contact with the outer circumferential wall of the burner body. And even if the recessed part is formed in the circumferential direction of the outer peripheral wall of a burner main body, for example, it is easy to make the front-end surface of a protrusion piece contact | abut in this recessed part.

In the case of forming a plurality of pairs of pieces and protrusions of the sandwich pieces and the engaging pieces, they are arranged symmetrically in the center line in the height direction of the inclined portion, and in the case of forming one projection and the protrusion piece, they are disposed on the center line. In addition, a pair of leg pieces bent vertically downwards are formed at both edges of the horizontal portion, and the leg pieces are fixed to an attachment frame to which the burner body is fixed.

Similarly to the first attachment bracket, the second attachment bracket is composed of a horizontal portion and an inclined portion bent upward on the burner body side. It is preferable that the inclined portion is provided with a pair of clamping pieces for sandwiching the trunk portion of the flame detector, and also to form the clamping pieces described above. The inclined portion is formed with a stone piece whose tip is in contact with the outer circumferential wall of the burner body.

A pair of clamping pieces are formed in the upper part and the lower part of the inclination part. The upper and lower clamping pieces are bent at right angles to the burner body opposite to the inclined portion and are flat in the horizontal direction. More precisely, the sandwich pieces are formed upward because they are bent at right angles to the inclined portion. In addition, the locking piece is usually formed in the middle of the upper and lower clamping pieces. The protrusion pieces are bent toward the burner body with respect to the inclined portion and are flat in the vertical direction. For the reason as described above, it is preferable to form the projection piece substantially parallel with the horizontal part of the mounting bracket and at the top of the inclined part, in particular at the upper edge thereof. Then, it is preferable to bend the tip faces of the pair of protrusions so as to contact the outer circumferential wall of the burner body in a convex shape so that the outer circumferential wall is in contact with the outer circumferential wall in two-point contact. When each piece of the pair of protrusion pieces is formed at both edges of the inclined portion and the two-point contact with a wider interval is adopted, the installation position of the flame detector is particularly stable.

Each piece of the clamping piece, the locking piece, and the protrusion piece is disposed symmetrically or on the center line with the center line in the height direction of the inclined portion. Moreover, the leg pieces mentioned above are formed in the both edges of a horizontal part.

When the mounting bracket (leg piece) is finally fixed to the attachment frame of the burner body, the angle of the inclined portion relative to the horizontal portion is generally in the range of 50 to 70 degrees, preferably in the range of 55 to 65 degrees. When the angle is in the range of 50 to 70 °, in the commercial gas combustion device, the flame detector is attached at the optimum position without the position of the heat sensing portion of the flame detector being too close to or too far from the outer peripheral wall of the burner body. can do. The optimum position of the flame detector means that the thermal detector portion of the flame detector is arranged at the outer edge of the flame flame burner body when the burner is burned with weak thermal power.

In the flame detector, a groove for positioning the thermal portion is formed at the outer circumference of the pencil-shaped body portion. The flame detector is mounted on the mounting bracket by engaging the positioning groove between the projection of the first mounting bracket or at least one pair of the clamping pieces of the second mounting bracket, and pressing the flame detector toward the burner body side. After contacting the body of the flame detector with the inclined portion of the mounting bracket, it is possible to operate only by engaging both end portions of the pressing member with the engaging piece. In other words, the flame detector can be fixed on the inclined portion of the mounting bracket by a simple press-fit on the opposite side to the burner body and a locking operation of the pressing member against the locking piece. In the case where the positioning grooves are engaged with the sandwich pieces on the upper and lower sides, the pair of the sandwich pieces on the other side sandwich the trunk portion of the flame detector at a position separated from the positioning grooves. When the flame detector is fixed to the mounting bracket, the upper portion of the flame detector (heating portion) is in a state protruding from the inclined portion.

In the second mounting bracket, it is preferable to form the positioning groove in the lower part of the flame detector body portion and to sandwich the lower gripping piece, but to sandwich the upper gripping piece or to form two positioning grooves in the upper portion. And the lower gripping piece may be sandwiched. Moreover, since it is enough to form a positioning groove in the position engaged by a pair of clamping pieces, it is not necessary to necessarily form a groove in the perimeter of a flame detector body part. Moreover, it is also preferable to form the groove | channel in the trunk | drum of a flame detector which the arcuate-curved pressing member fits loosely or loosely.

To fix the mounting bracket with the flame detector on the mounting frame for fixing the burner body, first, insert the front end of the horizontal portion on the burner body side into the gap between the rear surface of the burner body and the upper surface of the attachment frame, Insert the legs of the mounting bracket into the pair of slits formed on the upper surface of the bracket. Subsequently, the mounting bracket is press-fitted until the pair of protrusions abuts against the outer circumferential wall of the burner body. The mounting bracket is fixed to the mounting frame by fastening the burner body to the mounting frame, for example, by screwing it in the state where the protrusion piece abuts. The gap and the slit are set to a degree slightly wider than the plate thickness of the horizontal portion and the leg piece, respectively. The slit also serves as positioning of the mounting bracket relative to the mounting frame.

Here, before the mounting bracket is fixed to the mounting frame of the burner body, the inclination angle of the inclined portion with respect to the horizontal portion is set to 1 to 5 degrees, preferably 2 to 4 degrees, smaller than the final angle described above. In this way, if the inclined angle at the time of processing is fixed to the attachment frame while the protrusion is pressed against the outer circumferential wall of the burner body using an attachment bracket that is set smaller than the final angle, the inclination angle is slightly increased. The final tilt angle is adjusted.

In the present invention, since the arrangement position of the heat sensing portion of the flame detector is regulated solely by the length of the stone piece, there is some dispersion in the inclination angle in the manufacturing process of the mounting bracket, or the back surface of the burner body before fixing and the upper surface of the attachment frame and Even if there is some dispersion in the interval of, the positional relationship between the burner body and the flame detector hardly changes with the predetermined one. In addition, even after the attachment bracket is fixed to the attachment frame for fixing the burner body, the positional relationship is hardly changed even when the flame detector is attached to the attachment bracket in the above-described order.

The second mounting bracket in the present invention can be manufactured from one sheet metal by press working, for example. Specifically, a cutout portion is formed over the horizontal portion at the lower portion of the inclined portion, and sometimes in the lower portion of the inclined portion. At the upper edge of this cutout, a lower clamping piece is formed before bending to protrude therein.

In order to manufacture the attachment brackets, first, the cutouts are formed together with the horizontal and inclined portions of the sheet metal cut and smoothly continuous. At that time, each of the pair of protrusions, the upper pinching pieces, and the locking pieces described above are left outside the periphery of the inclined portion, and the pair of leg pieces is left on both sides of the horizontal portion. The protrusions are formed at the upper edges of both sides of the inclined portion, and are slightly upward when bent parallel to the horizontal portion. The upper clamping piece is formed at the upper end of the inclined portion. In addition, the engaging pieces are formed at both edges of the inclined portion. And it is preferable to make the width | variety of the protrusion piece and the latching piece formed in the outer side of both edges of an inclination part narrower than the width | variety of the leg piece formed in the outer side of both edges of a horizontal part. The width here means the distance between the tip of each pair of pieces.

The cut sheet metal is then bent to the leg piece in the above-described direction to produce a second attachment bracket.

It will be apparent from the above description that the first mounting bracket can also be manufactured from one sheet metal based on the above-described method.

Next, this invention is demonstrated concretely, referring drawings.

In FIG. 1A, reference numeral 1a denotes a first thermocouple fixing bracket, and includes a horizontal portion 2 and an inclined portion 3. The inclined portion 3 is bent upward to the burner body side at an inclination angle of 58 degrees with the horizontal portion 2. In addition, the notch part 4a is formed in the substantially center part of the inclination part 3. As shown in FIG. On both edges of the horizontal portion 2, a pair of leg pieces 5 bent vertically downward are formed.

In the notch part 4a of the inclination part 3, the projection 6a and the pair of longitudinally long clamping pieces 6b are formed in the center and both edges of a lower edge, respectively. In addition, the inclined portion 3 is provided with a pair of locking pieces 7 at both edges, a pair of clamping pieces 8 extending horizontally at the upper edge, and a protrusion piece 9a at the center of the upper edge, respectively. Each pair of these pieces 6b, 7 and 8 is arrange | positioned symmetrically to the centerline of the height direction of the inclination part 3. As shown in FIG.

The projection 6a protrudes to the opposite side to the burner body. The longitudinally long clamping piece 6b, the flat locking piece 7 in the vertical direction, and the laterally clamping piece 8 are bent at right angles to the inclined portion 3 on the opposite side to the burner body. The locking piece 7 forms an inverted L shape. The horizontally flat projection 9a is bent toward the burner body side and is parallel to the horizontal portion 2. Moreover, the front end surface of the protrusion 9a is curved in concave shape so that it may correspond with the shape of the outer peripheral wall of a burner main body.

FIG. 1B shows a second thermocouple fixing bracket, in which members having the same function as the first fixing bracket are denoted by the same reference numerals in FIG. 1B.

The thermocouple fixing bracket 1b has a horizontal portion 2 and an inclined portion 3. The inclined portion 3 is composed of a lower portion having the same width as the horizontal portion 2, a middle portion narrower than the lower portion and an upper portion narrower than the middle portion, and a burner body (58) at an inclination angle of the horizontal portion 2 with 58 degrees. It is bent upward to 10) side (refer FIG. 3). In addition, a cutout portion 4b is formed in the attachment bracket 1b over a part of the horizontal portion 2 at the lower portion of the inclined portion 3. On both edges of the horizontal portion 2, a pair of leg pieces 5 bent vertically downward are formed. The leg piece 5 is formed in a substantially rectangular shape, and the bent portion on the opposite side to the burner body is cut off, and the lower edge portion on the opposite side is cut off to form a trapezoid.

The inclined portion 3 has a pair of lower clamping pieces 6 at the upper edge of the notch 4b formed at the bottom, a pair of locking pieces 7 at both edges of the middle portion, and a pair of upper edges at the upper edge thereof. A pair of protrusion pieces 9b are formed at both upper edge pieces 8 and upper edges of the upper end portions, respectively. Each pair of these pieces 5, 6, 7, 8, and 9b is disposed symmetrically with the centerline in the height direction of the inclined portion 3.

The lower and upper clamping pieces 6, 8 flat in the horizontal direction are bent at right angles to the inclined portion 3 on the opposite side to the burner body. The locking piece 7 flat in the vertical direction is bent at a right angle with the inclined portion 3 on the opposite side to the burner body, and its shape forms an inverted L shape. The flat projection 9b in the vertical direction is bent at a right angle with the inclined portion 3 toward the burner body side, and its top surface is parallel to the horizontal portion 2. Moreover, the front end surface of the protrusion 9b is curved convexly.

2 and 3 show, as an example, the attachment bracket 1b shown in FIG. 1B attached to the burner body of the gas cooker on which the burner cap is placed, and FIG. 4 secures the burner body to the attachment frame. The state which was made up is shown.

2 to 4, reference numeral 10 denotes a burner main body of the gas combustion apparatus, and is composed of an air mixing pipe 11, a ring-shaped burner head 12, and a flat flat portion 13. As shown in FIG. The burner body 10 is formed by caulking the outer periphery of two metal plates with each other. The air mixing pipe 11 is provided with a nozzle for supplying fuel gas inside the end portion, and a primary air intake port is formed in the cross section (not shown).

The burner cap 14 is detachably mounted on the burner head 12. A plurality of grooves are formed on the rear surface of the outer periphery of the burner cap 14, and a plurality of flame holes 16 are formed between the grooves and the combustion gas outlet 15 formed in the burner head 12. And the flame hole group which consists of several center flame hole 17 is arrange | positioned on the center ring-shaped part of the burner head 12. As shown in FIG. In addition, screw holes 18 and 18 are formed in the leading edge portion of the flat portion 13.

On the other hand, the burner body fixing frame 19 is composed of an elongated member having a cross-section c-shaped with an opening downward. Engaging pieces 20 are formed at both ends of the attachment frame 19, and these engaging pieces 20 are engaged with engaging holes formed in the grill box and the main body side plate of the gas cooking appliance, respectively (not shown). 3 shows an engaging piece 20 which is engaged with the engaging hole on the grill box side.

Numeral 21 denotes a thermocouple having a thermal portion 22 at its top portion, and a positioning groove 23 is formed at the bottom thereof. A groove into which the pressing member 24 is fitted is also formed in the middle portion of the thermocouple 21. The pressing member 24 is composed of a substantially semi-circular rigid member having rings at both ends. The thermocouple 21 is connected to a gas cock (not shown) in which an electronic safety valve is incorporated through the electric cord 25.

To mount the thermocouple 21 to the mounting bracket 1b, the positioning groove 23 is engaged between a pair of pieces of the lower clamping piece 6, and the thermocouple 21 is moved toward the burner body 10 side. It press-fits and makes the outer surface of the thermocouple 21 abut on the inclination part 3 of the mounting bracket 1b. Thereafter, the pressing member 24 is inserted into the groove, and both ends thereof are engaged with the locking pieces 7 so that the thermocouple 21 is fixed to the mounting bracket 1b.

The mounting bracket 1b to which the thermocouple 21 is fixed is fixed to the attachment frame 19 as follows.

The tip of the horizontal portion 2 is formed in the gap between the rear surface of the burner body 10 and the plate thickness of the horizontal portion 2 between the upper surface of the attachment frame 19 and the top plate of the attachment frame 19. The leg pieces 5 are inserted into the pair of slits (not shown) which serve as the positioning of the mounting bracket 1b obliquely downward from the side opposite to the burner body 10 with respect to the attachment frame 19. The upper surface plate of the mounting frame 19 also has a screw hole formed at a position corresponding to the screw holes 18 and 18 formed in the flat portion 13, and when the screw hole is formed, the screw hole portion is cut off and raised. The gap is secured by bending and making it almost overlap with the top plate.

When the pair of leg pieces 5 are inserted into the slit, the pair of protrusion pieces 9b are press-fitted until they come into contact with the outer circumferential wall of the burner body 10 while raising the mounting bracket 1b upwards. The burner body 10 is fixed to the attachment frame 19 by inserting the screw 26 into the screw hole 18 and screwing it in the state which pushed the protrusion piece 9b to the burner body 10. When the burner body 10 is fixed to the mounting frame 19 in this manner, the inclination angle of the inclined portion 3 with respect to the horizontal portion 2 is increased by about 2 degrees, and the inclination angle is finally 60 degrees.

According to the present invention, since the stone piece bent toward the burner body side is formed on the inclined portion of the mounting bracket to which the flame detection means is fixed, the tip thereof is brought into contact with the outer circumferential wall of the burner body. The arrangement position of the flame detection portion of the flame detection means is set in a state of being in close contact with the outer circumferential wall. Therefore, since the position of the flame detection means is regulated solely by the length of the stone piece, the fixed position of the flame detection means with respect to the burner body is stabilized.

As a result, even if there is some dispersion in the inclination angle of the inclined portion with respect to the horizontal portion of the mounting bracket in the processing, there is no great influence on the installation position of the flame detection portion. In addition, even if there is a slight gap in the distance between the back surface of the burner body before fixing and the upper surface of the attachment frame, the positional relationship between the burner body and the flame detection means is almost unchanged from the predetermined one, and thus the freedom of processing at the time of manufacturing the mounting bracket. Grows Therefore, the production yield of the gas combustion device due to the malfunction of the gas cock safety valve is improved.

According to the invention according to claim 2, since the installation position of the flame detection means can be easily managed by managing the length dimension of the stone piece, the flame detection means can be reliably disposed at a predetermined position. According to the invention of claim 3, since the positioning of the flame detection means is improved, dispersion of the position can be prevented more effectively. In addition, the invention according to claims 2 and 3 has the advantage that the length of the projection piece from the inclined portion of the mounting bracket to the contact position of the outer circumferential wall of the burner body is not longer than necessary.

According to the invention according to claim 4, the front end face of the protrusion piece is made to correspond to the shape of the outer circumferential wall of the burner body, so that it is also possible to cope with a burner head having a special structure. In addition, since the contact surface between the tip of the protrusion and the outer circumferential wall is wide, the fixing of the mounting bracket to the burner body can be easily stabilized. According to the invention according to claim 5, the tip of each pair of protrusions contacts the outer circumferential wall of the burner body at two places, whereby the installation position of the flame detection means with respect to the burner body can be stabilized more easily. Further, in the inventions according to claims 4 and 5, there is an advantage that the projection piece smoothly contacts the outer peripheral wall of the burner body.

Claims (5)

In the gas combustion apparatus which fixed the flame | sense detection means in the state which the upper part protruded from the inclination part to the attachment tool which consists of a horizontal part and the inclination part bent upwards from the horizontal part to the burner main body side, to the burner main body side with respect to the inclination part. A bent stone piece is formed on the inclined portion of the mounting bracket, and the tip of the stone piece is in contact with the outer circumferential wall of the burner body. The method according to claim 1, And said protrusion is substantially parallel to the horizontal portion of the mounting bracket. The method according to claim 1 or 2, Gas burner, characterized in that the protrusion piece is formed on the upper end of the inclined portion. The method according to any one of claims 1 to 3, A gas combustion device, characterized in that the distal end face of the protrusion is substantially matched to the shape of the outer circumferential wall of the burner body. The method according to any one of claims 1 to 4, The gas combustion device, characterized in that the stone piece consists of a pair of pieces.