JP3480345B2 - Flame port member - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flame hole member constituting a flame hole of a combustion device. [0002] 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 recent years, the density burner burner manufactured by press forming a metal plate has a more complicated structure than a general Bunsen burner, so 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 flame hole member, the present applicant has disclosed in
There is one disclosed in Japanese Patent Application Laid-Open No. 310908/310. FIG.
It is a perspective view of the flame hole member of a prior art. JP-A-7-310
In the flame hole member disclosed in Japanese Patent Application Publication No. 908, a plurality of strip-shaped metal plates having projections and depressions as shown in FIG. 6 are connected to each other via a narrow connecting portion 111, and the connecting portion 111 is bent. The partition plate is folded. In the folded state, adjacent partition plates are formed with a contact portion where the convex portions contact each other and a separation portion having a gap between the two partition plates, and the gap serves as a gas flow path. [0003] By the way, when this kind of flame hole member is mounted on a burner, the bent connection portion becomes:
It is divided into one that protrudes at the upper end on the flame hole side and one that protrudes at the lower end on the opposite side. Here, the connection part protruding to the flame hole surface side of both is exposed to the high temperature of the flame, and the combustion is performed in a state where the flame length is short by narrowing the combustion amount by using a fuel gas having a particularly fast burning speed. If it continues, it often glows red.
If such a state is repeated frequently over a long period of time, there is a possibility that the connecting portion is deteriorated or broken, and an external force such as vibration or pressure is applied, so that the partition plate may fall into the burner. For example, six partition plates 10 as shown in FIG.
In the flame hole member in which 1 to 106 are folded, the partition plates 103 and 104 located at the center are supported in a suspended state by the connection portion 111. Therefore, when all the connection portions 111 are broken, the partition plate 103 is broken. , 104 fall into the burner. An object of the present invention is to solve the above problems and provide a flame hole member that can maintain a predetermined flame hole shape without a partition plate falling off even when a connection portion on a flame hole surface side is broken. And [0004] In order to achieve the above object, the present invention provides a plurality of strip-shaped partition plates which are connected to each other via a narrow connecting portion. In the flame hole member in which the gap between the partition plates becomes a gas flow path, a partition plate supported in a suspended state by a connection portion, and a combination of the partition plates adjacent to the partition plate. hints at least one pair or more, both the partition plates together with partially close, the one Specifications
A hole or a concave portion is provided in the close portion of the cutting plate,
Is provided with a protrusion, and the hole or recess and the protrusion
And the two partition plates are engaged with each other . [0005] In the flame hole member of the present invention, it is suspended by the connecting portion.
The partition plate supported in the lowered state and the adjacent partition plate
Is provided on one partition plate
Holes or recesses and protrusions on the other partition plate.
The two partition plates are engaged. Therefore, in the flame hole member of the present invention, the engagement of the partition plate is ensured, and even if the connecting portion is broken, the partition plate does not drop. In addition, since the holes and projections can be easily formed by pressing, the flame hole member of the present invention is easy to manufacture. Hereinafter, specific embodiments of the present invention will be described. FIG. 1 is a sectional view of a flame hole member according to a specific embodiment of the present invention. FIG. 2 is an explanatory diagram when the flame hole member of FIG. 1 is folded. FIG. 3 is a perspective view of a combustion apparatus using the flame hole member of FIG. FIG. 4 is a cross-sectional view of the combustion device of FIG. FIG. 5 is a sectional view of a flame hole member according to another embodiment of the present invention. In the drawings, reference numeral 1 denotes a flame hole member according to an embodiment of the present invention. The flame-hole member 1 of the present embodiment is composed of six strip-shaped partition plates 2a to 2f each having a connection portion 3 having an extremely narrow width.
The partition plates 2a to 2f are bent from the connecting portion 3 and folded. The structure of the flame hole member 1 of the present embodiment will be described in the order of its manufacturing procedure as follows. When manufacturing the flame hole member 1 of the present embodiment, first, one steel plate is pressed to form a developed plate. The shape of the unfolding plate is six partition plates 2a to 2
f are connected by connecting portions 3 each having an extremely small width. Each of the partition plates 2a to 2f is embossed, and the whole is wavy in an uneven shape. As a characteristic configuration of the flame hole member of the present embodiment, a round through hole 7 is provided in the vicinity of the connection between the two partition plates 2c and 2d located at the center. Further, projections 8 are provided on the partition plates 2b, 2e adjacent to the partition plates 2c, 2d. The projection 8 is formed by pressing a part of a metal plate by pressing, and has a circular shape. Through holes 7 provided in the above-mentioned partition plates 2c, 2d
The positional relationship between the projections 8 provided on the partition plates 2b and 2e is a part that coincides with each other when the partition plates 2a to 2f are folded as shown in FIGS. In a state where the plates 2a to 2f are folded, they are convex toward the center partition plates 2c and 2d. The flame hole member 1 is formed by folding the connecting portions 3 so as to sequentially and alternately fold the partition plates 2a to 2f in the same manner as in the prior art. The connecting portion 3 is located at a position where the convex surfaces contact each other, is bent, and forms a “U” shape as shown in FIG. In the folded state, a gap penetrating in the width direction is formed between the partition plates 2a to 2f, and the gap serves as a gas flow path. Further, as a configuration unique to the present embodiment, the center partition plates 2c and 2d as shown in FIG.
And the partition plates 2b and 2e adjacent to each other.
Is engaged with the projection 8. Here, the center partition plates 2c and 2d are supported in a state of being suspended from above by the connecting portion 3, and in the prior art, when the connecting portion 3 is broken, it falls into the burner. It was an inevitable part to do.
On the other hand, in the flame hole member 1 of the present embodiment, the partition plate 2
The through holes 7 are provided in c and 2d, and the projections 8 of the partition plates 2b and 2e adjacent to the through holes 7 are engaged. Therefore, in the flame hole member 1 of the present embodiment, even if the connection portion 3 is broken, the center partition plates 2c and 2d are held by the partition plates 2b and 2e on both sides, and the partition plates do not fall into the burner. . The flame hole member 1 of this embodiment is mounted on a burner 10 of a combustion device as shown in FIG. 3, for example. Burner 10
In this method, rich and light combustion is performed, and a light mixed gas in which air is excessively mixed and a rich mixed gas in which the amount of air mixed is small are injected from adjacent flame holes. Specifically, as shown in FIG.
The rich mixed gas chamber 11 is disposed on the left and right, and the flame hole member 1 is mounted between the rich mixed gas chamber 11 above the combustion pipe main body 12. In the burner 10 of the present embodiment, a space interposed between the rich mixed gas chambers 11 exists at the top of the combustion tube main body 12. This space forms the light mixed gas passage 15. A through-hole (not shown) is provided between the combustion pipe main body 12 and the rich mixed gas chamber 11, and the combustion pipe main body 12
From the concentrated mixed gas chamber 11. Further, there is a gap between the rich mixed gas chamber 11 and the combustion pipe main body 12 as shown in FIG.
6 is open. The rich mixed gas discharged from the combustion tube main body 12 into the gap is mixed with air entered from the lower opening 18 to become a light mixed gas, and passes through the light mixed gas passage 15 sandwiched between the rich mixed gas chambers 11. Flows. Then, the light mixed gas is injected into the outside air through the gap of the flame hole member 1 to generate a main flame. Further, a rich mixed gas is injected from a flame hole provided on the top surface of the rich mixed gas chamber 11 to generate supplementary flame. Therefore, a main flame is generated in the portions of the center partition plates 2c and 2d, and the portions are exposed to high heat, so that the connecting portions 3 in the portions may be broken. However, in the flame hole member 1 of the present embodiment, the through holes 7 are provided in the partition plates 2c and 2d, and the partition plates 2b and 2b adjacent to the through holes 7 are provided.
Since the projections 8 of 2e are engaged, the partition plates 2 on both sides are engaged.
The center partitions 2c and 2d are held by b and 2e, and the partitions 2c and 2d do not fall into the burner. In the flame hole member 1 described above, an example is shown in which the through holes 7 are provided in the center partition plates 2c and 2d, and the projections 8 are provided in the partition plates 2b and 2e adjacent thereto. However, the present invention is not limited to this configuration, but provides projections on the center partition plates 2c and 2d (partition plates supported in a hanging manner by the connection portions 3), and provides holes in adjacent partition plates. May be engaged with each other. In the above-described embodiment, the projections 8 are formed in a concavo-convex shape by press molding. However, projections formed by cutting and raising 20 as shown in FIG. Further, the holes need not necessarily be through-holes, and may be recessed by pressing. In the above embodiment, the shapes of the projection 8 and the through hole 7 are round, but a slit-shaped hole or a peak-shaped projection can also be adopted. In this embodiment, the number of the partition plates is six, but the number of the partition plates is arbitrary. Further, in the present embodiment, the configuration in which all of the partition plates supported in a suspended manner by the connection portions are engaged with the surrounding partition plates is exemplified, but it is not necessary that all of the partition plates be engaged with the surrounding partition plates. . Further, in the above-described embodiment, an example has been shown in which the flame hole member and the main body of the burner are separately formed, and both are connected later. However, the flame including the main body of the burner such as the combustion tube main body is shown. The expanded shape of the hole member is stamped and formed with a press, etc.
The structure of the flame hole member of the present invention can also be used when employing a structure in which the flame hole member and the main body portion of the burner are simultaneously formed by folding this. As described above, in the flame hole member of the present invention, the partition plate supported in a suspended state by the connecting portion is engaged with the adjacent partition plate at a close portion. Therefore, in the flame hole member of the present invention, even if the connecting portion is broken, the partition plate supported in a suspended state is held by the adjacent partition plate and does not fall. Therefore, the flame hole member of the present invention has an effect of preventing a change in the flame hole shape due to the breakage of the connection portion and the deterioration of the combustion performance due to the change. Further , the flame hole member of the present invention can be easily formed by pressing and is easy to manufacture.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a flame hole member according to a specific embodiment of the present invention. FIG. 2 is an explanatory view when the flame hole member of FIG. 1 is folded. FIG. 3 is a perspective view of a combustion apparatus using the flame hole member of FIG. 1; FIG. 4 is a cross-sectional view of the combustion device of FIG. 3 in the A plane. FIG. 5 is a sectional view of a flame hole member according to another embodiment of the present invention. FIG. 6 is a perspective view of a prior art flame hole member. FIG. 7 is a sectional view of a prior art flame hole member. [Description of Signs] 1 Flame hole members 2a to 2f Partition plate 7 Through hole 8 Projection 20 Cut and raised

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shuji Kameyama 93rd Edocho, Chuo-ku, Kobe City, Hyogo Prefecture Inside Noritz Co., Ltd. 72) Inventor Hidenori Hata 93, Edo-cho, Chuo-ku, Kobe-city, Hyogo Prefecture Inside Noritz Co., Ltd. (56) References JP-A-8-233223 (JP, A) JP-A-9-210321 (JP, A) JP 2-33510 (JP, A) JP-A-8-200630 (JP, A) JP-A-56-103726 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23D 14/02 F23D 14/08

Claims (1)

(57) [Claims 1] A plurality of strip-shaped partition plates are connected to each other via a narrow connecting portion, and the connecting portions are bent so that the partition plates are folded. In the flame hole member in which the gap between the partition plates serves as a gas flow path, the partition plate supported in a suspended state by the connecting portion, and at least one set of a combination of the partition plates adjacent to the partition plate is included, and both partition plates are included. Partially close, and one of the partition plates
A hole or recess is provided in the close part, and a protrusion is provided in the other part.
A protrusion is provided, and the partition is formed by the hole or recess and the protrusion.
A flame hole member, wherein the plate is engaged.