JPS62169911A - Combustion device - Google Patents

Abstract

PURPOSE:To prevent thermal expansion and contraction of a burner case during heating and cooling and to prevent thermal strain and thermal deformation of a burner port wire net, by a method wherein plural beads, extended along a peripheral direction, are placed to the burner case formed in an U-shape in cross section. CONSTITUTION:Gas, injected through a nozzle 18 of a burner case 11, attracts air therearound through a damper 20 by the ejector effect of a throat part 19, the gas is mixed with primary air, and the mixture is burnt at a burner port wire net 4. Since plural beads 13, extended in a peripheral direction, are projected on the outer peripheral surface of the burner case 11 formed in an U-shape in cross section, deformation of the burner case 11 due to thermal expansion and contraction during heating and cooling is decreased, resulting in prevention of thermal strain and thermal deformation of the burner port wire net 14 and improvement of reliability and durability.

Description

【発明の詳細な説明】 産業上の利用分野 木１ｅ明は、ガスストーブやｊｆスＮｆｆ１機などの燃
焼Ｓ置に関し、特にガスを燃焼させるバーナの構３告に
関ダるものである。DETAILED DESCRIPTION OF THE INVENTION The field of industrial application relates to combustion systems such as gas stoves and JF-1 engines, and particularly to the structure of burners for burning gas.

従来の技術 従来の燃焼装置について、第４図および第５図を用いて
説明する。第４図は従来の燃焼装置としてのバーナの断
面図、第５図は同外観斜視図で、バーナ本体（Ａ＞の炎
孔板１の周囲は、枠２によりバーナ本体（Ａ）の上面開
口縁にカシメられている。前記バーナ本体（Ａ）は、左
側板３とこれに相対する右側板４とで主に構成されるも
のであり、５はガスは一次空気吸引のためのスロート部
である。そしてバーナ本体（Ａ＞内のガス温度分布を均
一にするためのラス網板６とパンチング板７とパツキン
９とが、左側板３と右側板４とによってささえられ、上
方からは、枠２によってカシメられている。さらにバー
ナ本体（Ａ＞の周囲は、左側板３の外縁を右側板４の外
縁が覆い、周Ｉ２！ｌをカシメる構成であった。2. Description of the Related Art A conventional combustion apparatus will be explained with reference to FIGS. 4 and 5. Fig. 4 is a sectional view of a burner as a conventional combustion device, and Fig. 5 is a perspective view of the same external appearance. The burner body (A) is mainly composed of a left side plate 3 and a right side plate 4 facing it, and 5 is a throat part for sucking primary air. The lath mesh plate 6, punching plate 7, and packing 9 for making the gas temperature distribution uniform in the burner body (A>) are supported by the left side plate 3 and the right side plate 4, and from above, the frame Furthermore, the outer edge of the left side plate 3 was covered by the outer edge of the right side plate 4, and the circumference I2!l was caulked around the burner body (A>).

発明が解決しＪ：つとづる問題点 しかしながら上記従来の構成では、スロート部５より空
気を吸引し、混合したガスが炎孔板１で燃焼し、バーナ
本体（Ａ）が加熱されていく場合に、炎孔板１を構成す
る余情ど、ラス網板６　Ｊ３よびパンチング板７とが、
その形状ヤＪｕ質などの近いにより、同一・温度分布で
上背することはなく、熱伝達にズレを生じながらそれぞ
れが熱膨張していく。該だバーナ本体（Ａ＞が燃焼を停
止し、冷ｆ、ｆｊＬ、ていく場合にも、炎孔板１を構成
する金網とラス網板６とパンチング板７との収縮による
熱変形が発生し、熱歪に弱く、耐久性もすぐれなかった
。Problems solved by the invention However, in the conventional configuration described above, when air is sucked through the throat part 5, the mixed gas is combusted in the flame hole plate 1, and the burner body (A) is heated. , the lath mesh plate 6 J3 and the punching plate 7 that constitute the flame hole plate 1,
Because their shapes and materials are similar, they do not overlap with the same temperature distribution, and each thermally expands while causing a difference in heat transfer. Even when the burner body (A) stops combustion and goes to cold f, fjL, thermal deformation occurs due to contraction of the wire mesh, lath mesh board 6, and punching board 7 that make up the flame hole plate 1. , it was weak against heat distortion and did not have good durability.

問題点を解決するための手段 上記問題点を解決するため、本発明の燃焼装置は、断面
略Ｕ字状でかつ開口端略全周にわたってフランジ部を有
するバーナケースと、外周縁がパツキンを介して前記バ
ーナケースのフランジ部上に位胃づる炎孔金網と、これ
らバーナケースのフランジ部と炎孔金網の外周縁とを挟
み込むバーナ枠とを備え、前記バーナケースは、周方向
に沿う複数本のビードを右するとともに、ノズル近傍に
断面積の小さいスロート部を有する構成としたものであ
る。Means for Solving the Problems In order to solve the above-mentioned problems, the combustion apparatus of the present invention includes a burner case having a substantially U-shaped cross section and a flange portion over substantially the entire circumference of the opening end, and a burner case having an outer peripheral edge with a packing interposed therebetween. and a burner frame that sandwiches the flange portion of the burner case and the outer periphery of the flame hole wire mesh, and the burner case has a plurality of flame hole wire meshes arranged along the circumferential direction. The bead is on the right side, and a throat portion with a small cross-sectional area is provided near the nozzle.

作用 上記ゼ４成によれば、バーナケースの周方向に沿う複数
本のビードをバーナケース長手方向適当間隔おきに設け
たので、バーナケースの加熱冷却によるたわみや熱歪が
軽減きれ、炎孔金網に対する影響ら少ない。Effect According to the above-mentioned feature Z4, since a plurality of beads along the circumferential direction of the burner case are provided at appropriate intervals in the longitudinal direction of the burner case, the deflection and thermal strain due to heating and cooling of the burner case can be reduced, and the flame hole wire mesh can be reduced. There is little impact on

実施例 以下、本発明の一実施例を第１図〜第３図に基づいて説
明する。EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

第１図は本発明の一実施例における燃焼装置の底面図、
第２図は同ＩＩ！７ｉ正面図、第３図は同縦断側面図で
、１１は上面が開口したバーナケースであり、このバー
ナケース１１は、略Ｕ字型の断面形状で、かつ先端を閉
塞した分割筒状とし、後端の空気吸引部１２を除いて、
周方向に沿う複数のビード１３が外周面に突設されてＪ
３す、該た上面の間口端には全周にわたってフランジ部
１１ａを有している。FIG. 1 is a bottom view of a combustion device in an embodiment of the present invention;
Figure 2 is the same II! 7i is a front view, and FIG. 3 is a longitudinal side view of the same, 11 is a burner case with an open top surface, and this burner case 11 has a substantially U-shaped cross section and a divided cylindrical shape with a closed tip, Except for the air suction part 12 at the rear end,
A plurality of beads 13 along the circumferential direction are provided protruding from the outer peripheral surface of the
3. A flange portion 11a is provided at the frontage end of the upper surface over the entire circumference.

１４は略平面状の炎孔金網、１５はバーナ枠、１６は長
孔状のｕｎ口を有する金ＦＡ製の平板からなるバーナケ
ース蓋、１７はパツキンである。１８はノズルで、この
ノズル１８側には、バーナ枠１５とバーブケース１１と
によりスロート部１９が形成され、ダンパー２０を介し
てガスを吸引しやずいように構成されている。２１はバ
ーナにノズル１８などを取付けるためのバーナ受板で、
バーナケース１１とバーナ枠１５とに固定されている。14 is a substantially planar flame hole wire mesh, 15 is a burner frame, 16 is a burner case lid made of a flat plate made of gold FA and has an elongated hole-like opening, and 17 is a gasket. Reference numeral 18 denotes a nozzle, and on the nozzle 18 side, a throat portion 19 is formed by the burner frame 15 and the barb case 11, and is configured to easily suck gas through a damper 20. 21 is a burner receiving plate for attaching the nozzle 18 etc. to the burner,
It is fixed to the burner case 11 and the burner frame 15.

バーナケース１１の下端は、空気吸引部１２からバーナ
先端側に向（ブでいったん上向さのテーバ状に形成して
スロート部１９を構成し、そこから下向きのテーバ状に
形成して深くし、そこから一定長さフラットに形成し、
そこから上向きのデーパ状に形成してバーナケース１１
先端に至る形状である。２２はバッフルで、吸引された
ガスと一次空気とを、炎孔金網１４で゛燃焼ザる混合気
が均一となるＪ、うに設けられている。２３は点火電極
碍子、２４は点火電極、２５は一次燃焼室である。前記
バーナケース１１と炎孔金網１４とバーナ枠１５とバー
ナケース蓋１６とはパツキン１７を介してカシメられて
いる。The lower end of the burner case 11 is formed from the air suction part 12 toward the burner tip side by forming an upwardly tapered shape to form the throat part 19, and then forming a downwardly tapered shape to form the throat part 19. , from which it is formed flat to a certain length,
The burner case 11 is formed into an upward tapered shape from there.
The shape extends to the tip. Reference numeral 22 denotes a baffle, which is provided so that the sucked gas and the primary air are combusted in the flame hole wire gauze 14 to produce a uniform mixture. 23 is an ignition electrode insulator, 24 is an ignition electrode, and 25 is a primary combustion chamber. The burner case 11, the flame hole wire mesh 14, the burner frame 15, and the burner case lid 16 are caulked together with a gasket 17 interposed therebetween.

次に動作を説明覆る。ノズル１８から噴出されたガスは
、ダンパー２０を介しで、周囲の空気をスロート部１つ
の■じクク効果にＪ：って吸引し、ガスと一次空気とが
混合される。混合されたガスと一次空気とは、ざらに炎
孔面で均一温度分布および均一ガス濃度となるように、
バッフル２２で均一化される。Next, I will explain the operation. The gas ejected from the nozzle 18 sucks the surrounding air through the damper 20 due to the effect of one throat, and the gas and primary air are mixed. The mixed gas and primary air are heated so that there is a uniform temperature distribution and uniform gas concentration on the flame hole surface.
It is made uniform by the baffle 22.

このように本実施例によれば、断面略Ｕ字型のバーナケ
ース１１の外周面に周方向に沿う複数本のビード１３を
突設したので、加熱・冷却時のバーナケースの熱膨張お
よび収縮による変形が少なく、したがって炎孔金網１４
の熱歪・熱変形を防止でき、信頼性・耐久性に優れた燃
焼装置を得ることができる。As described above, according to the present embodiment, a plurality of beads 13 are provided protruding along the circumferential direction on the outer peripheral surface of the burner case 11 having a substantially U-shaped cross section, so that thermal expansion and contraction of the burner case during heating and cooling can be prevented. Therefore, the flame hole wire mesh 14
It is possible to prevent thermal distortion and thermal deformation, and to obtain a combustion device with excellent reliability and durability.

発明の効果 以上述べたように本発明によれば、断面略Ｕ字型のバー
ナケースに周方向に沿う′！Ｉｉ数本のビードを設けた
ので、加熱・冷却時のバーナケースの熱膨張および収縮
が少なく、したがって炎孔金網の熱歪・熱変形を防止で
き、高い信頼性および耐久性が１ｑられる。　　　　　
゛Advantages of the Invention As described above, according to the present invention, the burner case having a substantially U-shaped cross section has a ``!'' along the circumferential direction. Since several beads are provided, there is little thermal expansion and contraction of the burner case during heating and cooling, and therefore thermal distortion and thermal deformation of the flame hole wire mesh can be prevented, resulting in high reliability and durability.
゛

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例における燃焼装置の底面図、
第２図は同［断正面図、第３図は同縦断側面図、第４図
は従来の燃焼ｇ置の断面図、第５図は同外観斜視図であ
る。 １１・・・バーナケース、１１ａ・・・フランジ部、１
３・・・ビード、１４・・・炎孔金網、１５・・・バー
ナ枠、１７・・・パツキン、１８・・・ノズル、１９・
・・スロート部代理人　　　森　　本　　義　　弘 第プ図FIG. 1 is a bottom view of a combustion device in an embodiment of the present invention;
FIG. 2 is a sectional front view of the same, FIG. 3 is a longitudinal sectional side view of the same, FIG. 4 is a sectional view of a conventional combustion position, and FIG. 5 is a perspective view of the same external appearance. 11...Burner case, 11a...Flange part, 1
3... Bead, 14... Flame hole wire mesh, 15... Burner frame, 17... Packing, 18... Nozzle, 19...
・Throat Department Agent Yoshihiro Morimoto

Claims (1)

【特許請求の範囲】[Claims] １、断面略Ｕ字状でかつ開口端略全周にわたってフラン
ジ部を有するバーナケースと、外周縁がパッキンを介し
て前記バーナケースのフランジ部上に位置する炎孔金網
と、これらバーナケースのフランジ部と炎孔金網の外周
縁とを挟み込むバーナ枠とを備え、前記バーナケースは
、周方向に沿う複数本のビードを有するとともに、ノズ
ル近傍に断面積の小さいスロート部を有する構成とした
燃焼装置。1. A burner case having a substantially U-shaped cross section and having a flange portion over substantially the entire circumference of the opening end, a flame hole wire mesh whose outer peripheral edge is located on the flange portion of the burner case via a packing, and flanges of these burner cases. and a burner frame that sandwiches the outer circumferential edge of the flame hole wire mesh and the burner case, the burner case has a plurality of beads along the circumferential direction, and has a throat portion with a small cross-sectional area near the nozzle. .