JP2000193214A - Combustion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combustion device to perform smooth diffusion of heat from a partition plate and solve a problem on burning of a burner port member. SOLUTION: This combustion device 1 comprises a combustion pipe body 2; two outer wall parts 3; and a burner port member 5. The burner port member 5 is formed that six partition plates 20a-20f are intercoupled through an extremely narrow connection part 3 and by effecting bending from the connection part 3, the partition plates 20a-20f are folded back. The burner port member 5 is formed that since openings 21 are formed in the outermost first partition plates 20a and 20f and through a part of the second partition plates 20b and 20e located at an internal part are exposed through the opening 21, a part of the second partition plates 20b and 20e at an internal part also make contact with an inner wall part 29 of an outer wall part 3. As a result, the heat of the second partition plates 20b and 20e are transmitted to the outer wall part 3 and heat is emitted directly from the outer wall part 3. Thereby, the second partition plates 20b and 20e are prevented from heating-to-redness and the damage of the burner port member 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a combustion apparatus.

[0002]

2. Description of the Related Art A gas burner is often used as a combustion device such as a hot water supply device or a small boiler. In a gas burner, a flame hole member is generally used to prevent flashback, and a gas is injected from a flame hole of the flame hole member to generate a flame on the flame hole member. In contrast, in the burner of the gray-scale combustion type manufactured by pressing a metal plate, which is recently seen, the structure is more complicated than that of a general Bunsen combustion type burner. Therefore, the flame hole member is formed separately from the burner body. In many cases, the flame hole member is mounted on the burner body and used. As an example of this type of combustion apparatus, the present applicant has previously disclosed in
Japanese Patent Application Laid-Open No. 310908/310. FIG.
FIG. 2 is an exploded perspective view of a main part of a conventional combustion device. FIG. 11 is a cross-sectional view of a conventional combustion device. The flame hole member employed in the combustion device disclosed in Japanese Patent Application Laid-Open No. 7-310908 is formed by stacking a plurality of partition plates. That is, the flame hole member 100 employed in the prior art
As shown in FIG. 10, partition plates 101 to 106, which are a plurality of strip-shaped metal plates having irregularities as shown in FIG. 10, are connected to each other via a narrow connecting portion 111, and the connecting portions 111 are bent to form Folded. In the folded state, adjacent partition plates 101 to 106
Is formed with an abutting portion where the protruding portions abut each other, and a separated portion having a gap between both metal plates, and the gap serves as a gas flow path.

[0003] The flame hole member 100 is mounted on a portion surrounded by the outer wall 107. Here, the relationship between the outer wall portion 107 and the flame hole member 100 in the conventional combustion device is as shown in FIG. 11. Only the outermost partition plates 101 and 106 of the flame hole member 100 are connected to the outer wall portion 107.
Contact with That is, in the prior art, the flame hole member 10
0, only the outermost partition plates 101 and 106 are in contact with the outer wall.

[0004]

In the combustion apparatus having the above-described structure, the gas emitted from the gap above the flame hole member 100 is ignited, and a flame is generated above the flame hole member 100. Therefore, the flame hole member 100 is heated by the flame. The heat of the flame hole member 100 is transferred to the partition plate 10.
The contact between the outer wall 107 and the outer wall 107
7 and released to the atmosphere.

Here, in the conventional combustion apparatus, the partition plates 101 to 106 constituting the flame hole member 100 as described above.
Since only the outermost partition plates 101 and 106 are in contact with the outer wall portion 107, the heat of the flame hole member 100 is conducted only from the outermost partition plates 101 and 106 and the other partition plates The heat of 102 to 105 is not easily conducted. That is, the partition plates 102 to 105 at the intermediate portion
Is transmitted to the adjacent partition plates and further to the outermost partition plates 101 and 106, and then is released to the atmosphere in contact with the outer wall portion 107. However, the outer partition plates 101 and 106 themselves are Since the temperature is considerably high, the middle partition plates 102 to 105 and the outer partition plates 101, 1
It is difficult for heat conduction to take place between 06. Therefore, heat of the intermediate partition plates 102 to 105 is hardly conducted, and the partition plate 1
There is a problem that 02 to 105 glows red, and the partition plates 102 to 105 are deformed or burnt to cause defects. In particular, when the combustion device is used in a state where the calorific value is small, the amount of heat received by the intermediate partition plates 102 to 105 is large,
The problem of burning of the flame holes was apparent.

Therefore, the present invention focuses on the above-mentioned problems of the prior art, and develops a combustion apparatus capable of smoothly dissipating heat from a partition plate and eliminating the problem of burning of a flame hole member. It is an issue.

[0007]

According to a first aspect of the present invention, there is provided a combustion apparatus in which a flame hole member is disposed in a main body formed by an outer wall portion. The member is a combustion device wherein a plurality of partition plates are stacked, and at least one of the partition plates stacked inside is in contact with an outer wall portion of the main body.

[0008] In the combustion device of the present invention, at least one of the partition plates stacked inside is in contact with the outer wall of the main body. Therefore, the heat of the internal partition plate is directly conducted to the outer wall, and is released to the atmosphere from the outer wall.

[0009] Claim 2 for achieving the same object.
The invention described in the above, in the body formed by the outer wall portion,
In the combustion device in which the flame hole member is arranged, the flame hole member is formed by stacking a plurality of partition plates, and an opening or notch is provided in the outermost partition plate of the flame hole member. A combustion device characterized in that a part of an inner partition plate is exposed from a notch, and an exposed portion of the partition plate is in contact with an outer wall portion of a main body.

In the combustion apparatus of the present invention, an opening or notch is provided in the outermost partition plate of the flame hole member,
A part of the internal partition plate is exposed from the opening or the like, and the exposed portion of the partition plate is in contact with the outer wall of the main body. That is, in the combustion device of the present invention, the inner partition plate is in direct contact with the outer wall. Therefore, the heat of the internal partition plate is directly conducted to the outer wall, and is released to the atmosphere from the outer wall.

According to a third aspect of the present invention, a projection is provided on an inner partition plate, and the projection enters an opening or a notch of an outer partition plate, and a tip end thereof has an opening or a notch. 3. The combustion apparatus according to claim 2, wherein the combustion apparatus is exposed from and is in contact with an outer wall of the main body.

In the combustion apparatus of the present invention, the inner partition plate is provided with a convex portion, and the convex portion enters the opening or the like of the partition plate located outside, and the leading end of the convex portion is inserted through the opening or notch. It is exposed. Therefore, in the combustion device of the present invention, the internal partition plate is securely in contact with the outer wall of the main body.

[0013]

Embodiments of the present invention will be described below. In the following description, the term “up and down” refers to a state in which the combustion device is installed with the flame hole facing upward. FIG.
It is a perspective view of a combustion device in an embodiment of the present invention. FIG. 2 is an exploded perspective view of the combustion device of FIG. FIG. 3 is an exploded perspective view of a flame hole member employed in the combustion device of FIG.
FIG. 4 is an exploded perspective view of the vicinity of a flame hole member of the combustion device of FIG. FIG. 5 is a sectional view of a tip portion of the combustion device of FIG. FIG. 7 is a cross-sectional view taken along the plane A in FIG.

The combustion apparatus 1 according to the present embodiment is used in a case formed separately, and is used side by side, or used alone. The combustion device 1 includes a combustion tube main body 2 as shown in FIG.
And two outer wall portions 3 and a flame hole member 5. The combustion tube main body 2 is formed by pressing a single steel plate to form a developed figure having irregularities on its surface, bending the formed figure, and then joining it by spot welding.

The shape of the combustion tube body 2 after assembly is such that a front plate 8 and a symmetrical back plate 9 are superposed on the front plate 8 (see FIG. 6). The appearance of the combustion tube main body 2 has a flat shape, has a top portion 24, and its periphery is closed so that gas does not leak. A series of gas channels are formed inside the front plate 8 and the back plate 9 inside.

The combustion tube main body 2 employed in the present embodiment has a fuel gas introduction hole 14 as shown in FIG. 1 in the lower corner similarly to the known one, and the inside thereof has a gradually increasing cross-sectional area. Further, the mixing section 11 is formed by changing the direction of the flow path largely. Large and small holes 16 and 17 are provided in the upper side surface of the combustion tube main body 2.

The outer wall portion 3 is also formed by pressing a single steel plate to form a developed figure having irregularities and bending the same as in the combustion tube body 2 described above. As shown in FIGS. 4 and 6, the outer wall portion 3 has an inner wall portion 29 and an outer surface plate 15 arranged with a gap therebetween, has a narrow top portion 34, and is folded back so that gas does not leak around the other periphery. Things. The gap between the inner wall portion 29 and the outer surface plate 15 forms a gas flow path inside the outer wall portion 3. In other words, the entire area of the outer wall portion 3 functions as a gas flow path that goes upward from below.

Next, the flame hole member 5 will be described. The flame hole member 5 employed in the combustion apparatus 1 of the present embodiment is configured such that six strip-shaped partition plates 20a to 20f are connected to each other via a connection portion 30 having an extremely narrow width. The partition plates 20a to 20f are bent and folded. That is, the flame hole member 5 has the left first partition plate 20a and the right first partition plate 20f on the outermost sides, and the left second partition plate 20b, the right second partition plate 20e, and the left third partition plate 20c therein. , Right third partition plate 20d. The details of the structure of the flame hole member 5 of the present embodiment will be described below in the order of its manufacturing procedure. When manufacturing the flame hole member 5 of the present embodiment, first, a single steel plate is pressed,
A development plate is formed. The shape of the developing plate is such that six partition plates 20a to 20f are connected by connecting portions 30 having extremely small widths. Each partition plate 20a-20f
Is embossed, and the whole is wavy in an uneven shape.

As a characteristic configuration of the flame hole member 5 of the present embodiment, the outermost first partition plate 20a,
An opening 21 is provided in the partition plate 20f.
a, 20f, the second partition plate 20 adjacent to the inside
Protrusions 22 are provided on b and 20e. In the present embodiment, the shape of the opening 21 is substantially rectangular. On the other hand, the protrusion 22
Has a substantially square shape. The protruding portion 22 is obtained by partially deforming a metal plate by pressing. The tip of the projection 22 is a flat surface.

The outermost first partition plate 20a,
The positional relationship between the opening 21 provided in the second partition plate 20f and the convex portions 22 provided in the second partition plates 20b and 20e adjacent to each other is such that the partition plates 20a to 20f are folded as shown in FIGS. Sometimes coincident with each other. Therefore, the projections 22 of the second partition plates 20b and 20e are
When a through 20f are folded, they enter the opening 21 and the leading end is exposed to become the outermost portion of the flame hole member 5.

As in the prior art, the flame hole member 5 is formed by bending the connecting portion 30 so that the partition plates 20a to 20
f are alternately folded one after another. The connecting portion 30 is located at a position where the convex surfaces abut each other, is bent,
Form a "U" shape. In the folded state, gaps penetrating in the width direction of the partition plates 20a to 20f are formed by embossed irregularities as shown in FIG. 5, and the gaps serve as gas flow paths. A step 23 is formed on the outer surface of the flame hole member 5. Further, as a configuration unique to the present embodiment, as described above, the protrusions 22 of the second partition plates 20b and 20e enter the openings 21 of the first partition plates 20a and 20f located at the outermost sides, and The tip portion is exposed outside the flame hole member 5.

Next, the relationship between the members of the combustion apparatus 1 of the present embodiment will be described. Combustion device 1 of the present embodiment
The outer wall portion 3 is disposed on the left and right with the combustion tube main body 2 as the center, and the flame hole member 5 is mounted on the upper portion of the combustion tube main body 2 between the outer wall portions 3. Combustion tube body 2
The positional relationship between the outer wall 3 and the outer wall 3 is arranged in parallel with the outer wall 3 protruding from the top 24 of the combustion tube main body 2. In other words, the top 24 of the combustion tube main body 2 is below the top of the outer wall 3, and the combustion tube main body 2 is in a valley sandwiched by the outer wall 3. Therefore, at the top 24 of the combustion tube main body 2, there is a space sandwiched between the inner walls 29 of the outer wall 3.

When the combustion tube main body 2 and the outer wall portion 3 are assembled, the holes 16 of the combustion tube main body 2 are aligned with the holes provided in the outer wall portion 3, and the combustion tube main body 2 communicates with the outer wall portion 3. (Not shown). The flame hole member 5 is a space sandwiched between the inner wall portions 29 of the outer wall portion 3 and is disposed at a position slightly away from the top of the combustion tube main body 2. The flame hole member 5 is shown in FIG.
As shown in FIG. 6, the steps 23 of the outermost first partition plates 20a and 20f are positioned on the steps 26 (not shown in FIGS. 4 and 8) of the outer wall 3.

The outermost first partition plates 20a and 20f of the flame hole member 5 are in direct contact with the inner wall 29 of the outer wall 3. In the combustion device 1 of the present embodiment, the openings 21 are provided in the outermost first partition plates 20a, 20f, and the internal second partition plates 20b, 2b are formed from the openings 21.
0e is exposed, so that the inner second partition plate 20
A part of b and 20e is also in contact with the inner wall 29 of the outer wall 3. More specifically, the flat portions at the tips of the projections 22 of the partition plates 20b and 20e directly contact the inner wall 29 of the outer wall 3.

In the combustion device 1 of the present embodiment, the rich mixed gas released from the combustion tube main body 2 into the space between the outer wall portions 3 is
It mixes with the air that has entered through the lower opening 18 to form a light mixed gas, which rises upward. Then, the light mixed gas is injected into the outside air through the gap of the flame hole member 5 to generate a main flame. Note that a rich mixed gas is injected from a flame hole provided on the top surface of the outer wall portion 3 to generate supplementary flame.

As described above, the internal second partition plate 20
Since the main flame is generated at the portions b and 20e, the second partition plates 20b and 20e are exposed to high heat. However, in the combustion device 1 of the present embodiment, the internal second partition plate 20
Since b and 20e are in direct contact with the inner wall portion 29 of the outer wall portion 3, the heat of the second partition plates 20b and 20e is
And is radiated directly from the outer wall 3. Therefore, the second partition plates 20b and 20e do not glow red,
The flame hole member 5 is not damaged.

In the embodiment described above, the outermost first partition plate 2 of the partition plates constituting the flame hole member 5 is provided.
0a and 20f are provided with openings 21 and the openings 21
The configuration in which the convex portions 22 provided on the partition plates 20b and 20e are inserted is illustrated. However, the present invention is not limited to the configuration in which the opening is provided as described above, and a modified example will be described below. In the following embodiments, the same components as those in the previous embodiment are denoted by the same reference numerals in the drawings, and redundant description will be omitted.

FIG. 7 is an exploded perspective view of a flame hole member used in another embodiment of the present invention. FIG. 8 is an exploded perspective view around a flame hole member of a combustion apparatus according to another embodiment of the present invention.
FIG. 9 is a cross-sectional view around a flame hole member of a combustion apparatus according to another embodiment of the present invention. The combustion device 50 shown in FIGS.
Notch 5 instead of opening 21 used in the previous embodiment
1, the projection 22 provided on the inner second partition plates 20 b and 20 e is exposed from the notch 51, and the inner second partition plate 20 is provided on the inner wall portion 29 of the outer wall portion 3.
b, 20e. Even when the notches 51 are provided in the first partition plates 20a and 20f as in the present embodiment, the same operation and effect as in the previous embodiment can be exhibited.

In each of these examples, a projection is provided on the inner partition plate and the projection is exposed from the opening or the notch. However, the projection is not necessarily provided on the inner partition plate. For example, an inwardly convex portion is provided on the inner wall portion 29 of the outer wall portion 3, and the convex portion is made to coincide with the opening of the outermost partition plate. In this configuration, the convex portion provided on the outer wall portion 3 enters the opening of the flame hole member, and the distal end portion of the outer wall portion contacts the internal partition plate.

Further, if the height of the partition plate is changed, the height of the outermost partition plate is designed to be low, and the inner partition plate is exposed from above or below the outer partition plate. Part of the inner partition plate is in contact with the outer wall portion 3 without providing an opening or a notch.

In the above embodiment, the projections 22 are provided on the second partition plates 20b and 20e located second from the outside, and a part of the second partition plates 20b and 20e is exposed to the outside. Third partition plates 20c, 20d on the inside
May be exposed to the outside. FIG. 9 shows an example in which a part of the third partition plate is exposed. That is, the flame hole member 60 employed in the combustion device 70 of the present embodiment has six partition plates 61a to 61f as in the previous example, but the second partition plates 61b and 1e located second from the outside.
Is provided with an opening 62, and the third partition plates 61c and 61d are provided with a convex portion 63. The openings 62 of the second partition plates 61b and 61e arranged secondly communicate with the openings 65 of the outermost first partition plates 61a and 61f. The convex portions 63 of the third partition plates 61c and 61d pass through both the opening 62 of the second partition plates 61b and 61e and the opening 65 of the first partition plates 61a and 61f, and are exposed to the outside, and Abut. Also in the present embodiment, the convex portions 66 are provided on the second partition plates 61b and 61e, and the convex portions 66 are exposed to the outside from the openings 65 of the outermost first partition plates 61a and 61f. And is in contact with the outer wall portion 3. Also, the convex portions 67 are provided on the outermost first partition plates 61a and 61f.
The outermost first partition plate 61a,
61f and outer wall part 3 are touching. Therefore, in the combustion device 70 of the present embodiment, the first partition plates 61a and 61f, the second partition plates 61b and 61e, and the third partition plates 61c and 61c.
All of 1d independently contact the outer wall portion 3 to radiate heat.

In each of the above-described embodiments, the number of partitions is six, but the number of partitions is arbitrary.

Further, in the above-described embodiment, an example is shown in which the inside of the outer wall portion 3 is hollow, but the outer wall portion may be a simple plate.

[0034]

According to the first aspect of the present invention, at least one of the partition plates stacked inside is in contact with the outer wall of the main body, so that the heat of the internal partition plate is directly transferred to the outer wall. Conducted and released from the outer wall to the atmosphere. Therefore, in the combustion device of the present invention, heat is smoothly dissipated from the partition plate, and the flame hole member does not burn.

The same applies to the combustion device according to the second aspect, wherein a part of the internal partition plate is exposed from the opening or the like, and the exposed portion of the partition plate contacts the outer wall of the main body to promote internal heat radiation. Has the effect of doing Therefore, in the combustion device of the present invention, heat is smoothly dissipated from the partition plate, and the flame hole member does not burn.

Further, in the combustion apparatus according to the third aspect, the inner partition plate is reliably brought into contact with the outer wall portion of the main body by the convex portion, and heat is radiated smoothly from the partition plate, and the flame hole member is burned. Absent.

[Brief description of the drawings]

FIG. 1 is a perspective view of a combustion device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the combustion device of FIG.

FIG. 3 is an exploded perspective view of a flame hole member used in the combustion device of FIG. 1;

FIG. 4 is an exploded perspective view of the vicinity of a flame hole member of the combustion device of FIG. 1;

FIG. 5 is a sectional view of a tip portion of the combustion device of FIG. 1;

FIG. 6 is a cross-sectional view taken along a plane A in FIG.

FIG. 7 is an exploded perspective view of a flame hole member used in another embodiment of the present invention.

FIG. 8 is an exploded perspective view around a flame hole member of a combustion apparatus according to another embodiment of the present invention.

FIG. 9 is a cross-sectional view of the vicinity of a flame hole member of a combustion apparatus according to another embodiment of the present invention.

FIG. 10 is an exploded perspective view of a main part of a conventional combustion device.

FIG. 11 is a sectional view of a conventional combustion device.

[Explanation of symbols]

 1, 50, 70 Combustion device 2 Combustion pipe main body 3 Outer wall 5, 52, 60 Flame hole member 20a to 20f Partition plate 21 Opening 29 Inner wall 30 Connection part 51 Notch 61a to 61f Partition plate 62 Opening 63 Convex portion 65 Opening 66 convex part 67 convex part

Continuing on the front page (72) Inventor Hirosaku Shirode 93, Edo-cho, Chuo-ku, Kobe-shi, Hyogo Pref. 72) Inventor Ryoji Kutsuna 93 Edo-cho, Chuo-ku, Kobe-shi, Hyogo Pref. AB02 AC02 AD13

Claims (3)

[Claims] 1. A combustion apparatus in which a flame hole member is disposed in a main body formed by an outer wall portion, wherein the flame hole member is formed by stacking a plurality of partition plates, and at least one of the partition plates stacked inside. A combustion device characterized in that one is in contact with the outer wall of the main body. 2. A combustion apparatus in which a flame hole member is disposed in a main body formed by an outer wall portion, wherein the flame hole member is formed by stacking a plurality of partition plates, and is located at the outermost side of the flame hole member. An opening or notch is provided in the partition plate, and a part of the internal partition plate is exposed from the opening or notch,
A combustion device wherein an exposed portion of the partition plate is in contact with an outer wall portion of the main body. 3. A projection is provided on an inner partition plate, and the projection enters an opening or a notch of an outer partition plate, and a tip end thereof is exposed from the opening or the notch to form an outer wall of the main body. The combustion device according to claim 2, wherein the combustion device is in contact with a portion.