JP3996139B2 - Cylindrical burner - Google Patents

Cylindrical burner Download PDF

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JP3996139B2
JP3996139B2 JP2004096337A JP2004096337A JP3996139B2 JP 3996139 B2 JP3996139 B2 JP 3996139B2 JP 2004096337 A JP2004096337 A JP 2004096337A JP 2004096337 A JP2004096337 A JP 2004096337A JP 3996139 B2 JP3996139 B2 JP 3996139B2
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combustion
plate
packing
plates
ring member
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JP2005282922A (en
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美砂子 城
芳彦 高須
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Rinnai Corp
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Rinnai Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F23D2203/1012—Flame diffusing means characterised by surface shape tubular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/102—Flame diffusing means using perforated plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • F23D2212/10—Burner material specifications ceramic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Gas Burners (AREA)

Description

本発明は、多数の炎孔を有する複数の短冊状の燃焼板を筒状に組み合わせて構成される燃焼筒を備える筒状バーナに関する。   The present invention relates to a cylindrical burner including a combustion cylinder configured by combining a plurality of strip-shaped combustion plates having a large number of flame holes into a cylindrical shape.

従来、この種の筒状バーナでは、周方向に複数の窓枠を有するフレームを用い、各窓枠に外方から各燃焼板を嵌め込み、各燃焼板の周縁部外面に当接する保護枠をフレームにねじ止めして、各燃焼板をフレームに固定することにより燃焼筒を組立てるようにしている(例えば、特許文献１参照)。   Conventionally, in this type of cylindrical burner, a frame having a plurality of window frames in the circumferential direction is used, each combustion plate is fitted into each window frame from the outside, and a protective frame that contacts the outer peripheral surface of each combustion plate is framed. The combustion cylinder is assembled by fixing each combustion plate to the frame by screwing to (see, for example, Patent Document 1).

このものでは、複数の窓枠を有する複雑な構造のフレームと各燃焼板の保護枠とが必要で、部品点数が増し、更に、組立てにも手間がかかり、コストが高くなる不具合があった。   In this case, a frame having a complicated structure having a plurality of window frames and a protective frame for each combustion plate are required, which increases the number of parts, and also requires time and labor for assembly, resulting in high costs.

そこで、本願出願人は、先に、特願２００３−１１６３７４号により、多数の炎孔を有する複数の短冊状の燃焼板を筒状に組み合わせて構成される燃焼筒と、燃焼筒の内側を軸方向にのびる連結部材と、連結部材の両端に固定される一対の押え板とを備え、各押え板を燃焼筒の各端面に該各端面に重なる各端面パッキンを介して当接させて、両押え板により燃焼筒を軸方向両側から挟持するようにした筒状バーナを提案している。これによれば、複雑な構造のフレームや保護枠が不要になり、組立ても容易になって、コストダウンを図れる。   Therefore, the applicant of the present application previously disclosed, in Japanese Patent Application No. 2003-116374, a combustion cylinder configured by combining a plurality of strip-shaped combustion plates having a number of flame holes into a cylindrical shape, and an inner side of the combustion cylinder as an axis. A connecting member extending in the direction, and a pair of presser plates fixed to both ends of the connecting member, and each presser plate is brought into contact with each end face of the combustion cylinder via each end face packing that overlaps each end face. A cylindrical burner has been proposed in which a combustion cylinder is clamped from both axial sides by a pressing plate. This eliminates the need for a frame having a complicated structure or a protective frame, facilitates assembly, and reduces costs.

但し、燃焼筒を軸方向から挟持するだけでは、各燃焼板が径方向外方にずれて、各燃焼板間に隙間が空き、そこからのガス漏れを生ずる可能性がある。そこで、上記先願のものでは、各押え板の外周に、軸方向内方に屈曲する筒状のフランジ部を曲成し、このフランジ部で燃焼筒の端部外面を囲って、燃焼板が径方向外方にずれることを防止できるようにしている。   However, simply sandwiching the combustion cylinder from the axial direction may cause each combustion plate to shift radially outward, leaving a gap between each combustion plate and causing gas leakage from there. Therefore, in the above-mentioned prior application, a cylindrical flange portion bent inward in the axial direction is formed on the outer periphery of each presser plate, and this flange portion surrounds the outer surface of the end portion of the combustion cylinder, It is possible to prevent the displacement outward in the radial direction.

ここで、燃焼板を径方向のガタツキを生ずることなく保持するためには、燃焼筒の端部外面に押え板のフランジ部をきつく外嵌させる必要があるが、これでは、燃焼筒に対する押え板の組み付け時に燃焼板の端部外面をフランジ部で削ってしまうことがあり、押え板の組み付けが困難になる。特に、各燃焼板間のシール性を向上させるために、複数の燃焼板を、各燃焼板間に各燃焼板の側縁に沿うサイドパッキンを介設した状態で筒状に組み合わせて燃焼筒を構成する場合、サイドパッキンが所定の締め代分圧縮されるように各燃焼板を径方向内方に強く締め付けることが必要になる。そのためには、フランジ部の内径を自由状態での燃焼筒の外径より小さくする必要があり、押え板の組み付けが非常に困難になる。
実公昭４４−２６３４号公報 Here, in order to hold the combustion plate without causing backlash in the radial direction, it is necessary to tightly fit the flange portion of the press plate to the outer surface of the end portion of the combustion tube. When assembling, the outer surface of the end of the combustion plate may be scraped off by the flange, making it difficult to assemble the presser plate. In particular, in order to improve the sealing performance between the combustion plates, a plurality of combustion plates are combined in a cylindrical shape with side packings extending along the side edges of the combustion plates between the combustion plates. In the case of the configuration, it is necessary to strongly tighten each combustion plate radially inward so that the side packing is compressed by a predetermined tightening allowance. For this purpose, it is necessary to make the inner diameter of the flange portion smaller than the outer diameter of the combustion cylinder in a free state, and it is very difficult to assemble the presser plate.
Japanese Utility Model Publication No. 44-2634

本発明は、以上の点に鑑み、各燃焼板を径方向内方に締め付けられるようにして、且つ、押え板の組付けを容易にし、燃焼板間からのガス漏れを生じない組立性に優れた筒状バーナを提供することをその課題としている。   In view of the above points, the present invention allows each combustion plate to be tightened inward in the radial direction, facilitates assembly of the press plate, and is excellent in assemblage that does not cause gas leakage between the combustion plates. The subject is to provide a cylindrical burner.

上記課題を解決するために、本発明では、多数の炎孔を有する複数の短冊状の燃焼板を筒状に組み合わせて構成される燃焼筒と、燃焼筒の内側を軸方向にのびる連結部材と、連結部材の両端に固定される一対の押え板とを備え、各押え板を燃焼筒の各端面に該各端面に重なる各端面パッキンを介して当接させて、両押え板により燃焼筒を軸方向両側から挟持するようにした筒状バーナにおいて、各端面パッキンの外周に、各燃焼板の端部外面に重なる外周パッキン部を延出すると共に、各押え板の外周に、軸方向内方に屈曲する筒状のフランジ部を曲成して、このフランジ部の内面と各燃焼板の端部外面との間に外周パッキン部が所定の締め代分だけ圧縮されて挟み込まれるようにすると共に、燃焼筒の外面の外周パッキン部に対し軸方向内方に隣接する部分に、複数の燃焼板を筒状に結束するリング部材を装着し、各燃焼板の端部外面と各押え板のフランジ部の内面との間に生ずる隙間をリング部材により閉塞している。 In order to solve the above problems, in the present invention, a combustion cylinder configured by combining a plurality of strip-shaped combustion plates having a large number of flame holes in a cylindrical shape, and a connecting member extending in the axial direction inside the combustion cylinder, A pair of presser plates fixed to both ends of the connecting member, each presser plate being brought into contact with each end face of the combustion cylinder via each end face packing that overlaps each end face, and the combustion cylinder is held by both presser plates. In a cylindrical burner that is sandwiched from both sides in the axial direction, an outer peripheral packing portion that overlaps the outer surface of each end of the combustion plate extends to the outer periphery of each end surface packing, and inward in the axial direction on the outer periphery of each presser plate. form songs cylindrical flange portion that bends, as well as to the outer circumferential packing part is sandwiched is compressed by a predetermined tightening allowance between the inner surface and the end outer surface of the combustion plate of the flange portion In the axial direction against the outer peripheral packing part of the outer surface of the combustion cylinder The portion adjacent to, and mounting the ring member for bundling a plurality of combustion plate into a cylindrical shape, a gap generated between the end portion outer surface and the inner surface of the flange portion of the pressing plate of the combustion plate is closed by the ring member ing.

上記の構成によれば、フランジ部の内径を燃焼筒の端部の外径より外周パッキン部の圧縮状態での厚さ分だけ大きく設定できる。そのため、燃焼筒に対する押え板の組み付け時に、燃焼板の端部外面がフランジ部で削られることはない。また、燃焼筒の端面側から軸方向内方にフランジ部が進行するのに伴い、外周パッキン部はその基端側からフランジ部の内面と燃焼板の端部外面との間に圧縮されつつ無理なく挟み込まれる。換言すれば、フランジ部は、軸方向内方への押し込みにより、外周パッキン部を燃焼板の端部外面との間に挟みこむようにして燃焼筒の端部外面にスムーズに外嵌される。従って、燃焼筒に対する押え板の組み付けが容易になる。   According to said structure, the internal diameter of a flange part can be set larger by the thickness in the compression state of an outer periphery packing part than the outer diameter of the edge part of a combustion cylinder. Therefore, the outer surface of the end portion of the combustion plate is not scraped by the flange portion when the presser plate is assembled to the combustion cylinder. Further, as the flange portion advances inward in the axial direction from the end surface side of the combustion cylinder, the outer peripheral packing portion is forced to be compressed from the proximal end side between the inner surface of the flange portion and the outer surface of the end portion of the combustion plate. It is sandwiched without. In other words, the flange portion is smoothly fitted onto the outer surface of the end portion of the combustion cylinder so as to sandwich the outer peripheral packing portion with the outer surface of the end portion of the combustion plate by being pushed inward in the axial direction. Therefore, the press plate can be easily assembled to the combustion cylinder.

燃焼筒の端部に押え板を組み付けた状態では、外周パッキン部の圧縮反力により、各燃焼板が径方向内方に締め付けられ、各燃焼板が径方向にガタツクことなくしっかりと保持される。従って、燃焼板が径方向外方にずれて、燃焼板間に隙間が空き、そこからのガス漏れを生ずるといった不具合を確実に防止することができる。また、複数の燃焼板を、各燃焼板間に各燃焼板の側縁に沿うサイドパッキンを介設した状態で筒状に組み合わせて燃焼筒を構成する場合、燃焼筒に対する押え板の組み付けを容易にするために、フランジ部の内径を自由状態での燃焼筒の端部の外径より大きく設定しても、外周パッキン部の圧縮反力により各燃焼板を径方向内方に強く締め付けて、サイドパッキンを圧縮することができる。従って、この場合にも、押え板の組み付けを容易にし、且つ、燃焼板間のサイドパッキンによるシール性も確保できる。   In the state where the presser plate is assembled to the end of the combustion cylinder, each combustion plate is clamped inward in the radial direction by the compression reaction force of the outer peripheral packing portion, and each combustion plate is firmly held without rattling in the radial direction. . Therefore, it is possible to reliably prevent such a problem that the combustion plates are displaced radially outward, a gap is left between the combustion plates, and gas leaks therefrom. In addition, when a combustion cylinder is configured by combining a plurality of combustion plates in a cylindrical shape with side packings extending along the side edges of the combustion plates between the combustion plates, the assembly of the presser plate to the combustion cylinder is easy. Therefore, even if the inner diameter of the flange portion is set larger than the outer diameter of the end portion of the combustion cylinder in the free state, each combustion plate is strongly tightened radially inward by the compression reaction force of the outer peripheral packing portion, The side packing can be compressed. Therefore, also in this case, the presser plate can be easily assembled and the sealing performance by the side packing between the combustion plates can be secured.

ところで、上記した端面パッキンやサイドパッキンは、一般に、セラミック繊維にバインダを含浸させて成形したセラミックパッキンで構成される。セラミックパッキンは耐熱性はあるものの、時間の経過でバインダが次第に熱分解して消失し、厚みが減少する(痩せる)。そして、外周パッキン部が痩せると、燃焼板の締め付け力が低下する。その結果、燃焼板が径方向外方にずれて、燃焼板間に隙間が空き、ガス漏れを生じてしまうおそれがある。更に、パッキンの劣化が進むと、外周パッキン部が端面パッキンから分離して、押え板のフランジ部と燃焼板の端部外面との間の隙間から抜け落ちてしまうことがある。そして、抜け落ちた外周パッキン部が炎に触れて燃焼不良を生ずるおそれもある。   By the way, the end face packing and the side packing described above are generally constituted by ceramic packing formed by impregnating a ceramic fiber with a binder. Although the ceramic packing has heat resistance, the binder gradually decomposes and disappears over time, and the thickness decreases (decreases). And if the outer periphery packing part is thinned, the clamping force of a combustion plate will fall. As a result, the combustion plates may be displaced radially outward, leaving gaps between the combustion plates and causing gas leakage. Furthermore, when the deterioration of the packing progresses, the outer peripheral packing part may be separated from the end face packing, and may fall out from the gap between the flange part of the holding plate and the end part outer surface of the combustion plate. Then, the outer peripheral packing part that has fallen out may come into contact with the flame and cause defective combustion.

然し、本発明によれば、外周パッキン部が痩せて、燃焼板の締め付け力が低下しても、燃焼筒を構成する複数の燃焼板はリング部材により筒状に結束されているため、燃焼板が径方向外方にずれて、燃焼板間に隙間が空くようなことはなく、燃焼板間からのガス漏れは防止される。また、外周パッキン部が端面パッキンから分離しても、燃焼板の端部外面と押え板のフランジ部の内面との間の隙間からパッキンの延出部が抜け落ちることは、この隙間を閉塞するリング部材により阻止される。従って、外周パッキン部が炎に触れて燃焼不良を生ずることも防止される。このように、パッキンの劣化に起因する不具合が解消されるため、パッキンの劣化による寿命の制限が緩和され、耐久性が向上する。 However, according to the present invention , even if the outer peripheral packing portion is thin and the tightening force of the combustion plate is reduced, the plurality of combustion plates constituting the combustion tube are bound together in a cylindrical shape by the ring member. Is not displaced radially outward, and there is no gap between the combustion plates, and gas leakage from between the combustion plates is prevented. In addition, even if the outer packing is separated from the end packing, the extension of the packing falls out from the gap between the outer surface of the end of the combustion plate and the inner surface of the flange of the presser plate. Blocked by the member. Therefore, it is also possible to prevent the outer peripheral packing part from coming into contact with the flame and causing poor combustion. Thus, since the malfunction resulting from deterioration of packing is eliminated, the restriction | limiting of the lifetime by deterioration of packing is eased, and durability improves.

ここで、外周パッキン部の抜け落ちを阻止するには、リング部材が燃焼板の端部外面と押え板のフランジ部の内面との間の隙間を閉塞する位置から軸方向内方にずれないようにすることが必要になる。この場合、リング部材を押え板のフランジ部の内側に押し込んだ後、フランジ部の端縁を部分的に径方向内方にかしめ、このかしめ部によりリング部材のずれを防止することが考えられるが、これでは手間がかかる。   Here, in order to prevent the outer peripheral packing portion from falling off, the ring member should not be displaced inward in the axial direction from the position where the ring member closes the gap between the outer surface of the end portion of the combustion plate and the inner surface of the flange portion of the presser plate. It becomes necessary to do. In this case, it is conceivable that after the ring member is pushed into the inside of the flange portion of the presser plate, the edge of the flange portion is partially caulked inward in the radial direction, and the displacement of the ring member is prevented by this caulking portion. This takes time.

そのため、各燃焼板の端部外面に、径方向内方に窪む窪み部を形成し、各押え板のフランジ部の内径を、このフランジ部の内面と窪み部との間に外周パッキン部が所定の締め代分だけ圧縮されて挟み込まれるように設定すると共に、リング部材を窪み部に係合するように装着することが望ましい。これによれば、窪み部の軸方向内端の段差がストッパとなって、リング部材のずれが防止される。従って、リング部材のずれを防止するための後加工が不要になり、コストダウンを図る上で有利である。   Therefore, a hollow portion that is recessed inward in the radial direction is formed on the outer surface of the end portion of each combustion plate, and the inner diameter of the flange portion of each retainer plate is set between the inner surface of the flange portion and the hollow portion. It is desirable to set the ring member so that it is compressed by a predetermined tightening allowance and to be engaged with the recess. According to this, the step at the inner end in the axial direction of the recessed portion serves as a stopper, and the shift of the ring member is prevented. This eliminates the need for post-processing to prevent the ring member from shifting, which is advantageous in reducing costs.

ところで、各燃焼板間にサイドパッキンを介設する場合、初めに各燃焼板を径方向内方に強く締め付けてサイドパッキンを圧縮し、サイドパッキンを燃焼板になじませることが必要になる。ここで、このような強い締め付け力をリング部材だけで得られれば、押え板のフランジ部により外周パッキン部を介して燃焼板を締め付けずに済む。然し、リング部材で燃焼板を締め付けると、燃焼板に対するリング部材の接触面積が狭いため、燃焼板に局部的な応力がかかり、リング部材だけで強い締め付け力を得ることは、燃焼板の強度上困難である。一方、押え板のフランジ部により外周パッキン部を介して燃焼板を締め付ける場合は、燃焼板に対する外周パッキン部の接触面積を広く確保できるため、燃焼板をこれに無理をかけずに強く締め付けることができる。そして、この締め付けによるサイドパッキンの圧縮で、サイドパッキンが燃焼板に一旦なじんでしまえば、外周パッキン部の劣化で締め付け力が低下しても、リング部材により燃焼板が筒状に結束されている限り、各燃焼板間のシール性は確保される。   By the way, when the side packing is interposed between the combustion plates, it is necessary to first fasten each combustion plate inward in the radial direction to compress the side packing so that the side packing fits the combustion plate. Here, if such a strong tightening force can be obtained only by the ring member, it is not necessary to tighten the combustion plate via the outer periphery packing portion by the flange portion of the presser plate. However, when the combustion plate is tightened with the ring member, the contact area of the ring member with the combustion plate is narrow, so that a local stress is applied to the combustion plate, and obtaining a strong tightening force with only the ring member is an increase in the strength of the combustion plate. Have difficulty. On the other hand, when the combustion plate is tightened by the flange portion of the holding plate via the outer packing portion, the contact area of the outer packing portion with the combustion plate can be secured widely, so that the combustion plate can be tightened strongly without overdoing this. it can. Then, once the side packing becomes familiar with the combustion plate by compression of the side packing by this tightening, even if the tightening force is reduced due to deterioration of the outer periphery packing portion, the combustion plate is bound in a cylindrical shape by the ring member. As long as the sealability between each combustion plate is ensured.

但し、サイドパッキンが痩せて、サイドパッキンと燃焼板との間に隙間が空くとガス漏れを生ずる。この場合、リング部材を、複数の燃焼板を径方向内方に弾力的に締め付ける弾性リングで構成すれば、サイドパッキンが痩せるのに伴い弾性リングの弾力により燃焼板が径方向内方に押し込まれて、燃焼筒が縮径される。そのため、サイドパッキンと燃焼板との間に隙間が空くことはなく、ガス漏れが防止される。   However, if the side packing is thin and there is a gap between the side packing and the combustion plate, gas leakage occurs. In this case, if the ring member is formed of an elastic ring that elastically tightens a plurality of combustion plates radially inward, the combustion plate is pushed radially inward by the elasticity of the elastic ring as the side packing is thinned. Thus, the diameter of the combustion cylinder is reduced. Therefore, there is no gap between the side packing and the combustion plate, and gas leakage is prevented.

図１は筒状バーナを示している。このバーナは、円筒状の燃焼筒１と、燃焼筒１の内側を軸方向にのびる連結部材２(図２、図３参照)と、連結部材２の両端に、燃焼筒１を軸方向両側から挟持するようにして固定される一対の押え板３，４と、一端側の押え板３の外面に固定した取付板５とを備え、給湯用熱源機や暖房機等の機器の器体内に取付板５において取付けられる。各押え板３，４は、図３に示す如く、燃焼筒１の各端面に該各端面に重なる各端面パッキン６を介して当接する。   FIG. 1 shows a cylindrical burner. This burner includes a cylindrical combustion cylinder 1, a connecting member 2 (see FIGS. 2 and 3) extending in the axial direction inside the combustion cylinder 1, and both ends of the connecting member 2, and the combustion cylinder 1 from both axial sides. A pair of presser plates 3 and 4 fixed so as to be sandwiched and a mounting plate 5 fixed to the outer surface of the presser plate 3 on one end side, and are attached to the body of a device such as a hot water supply heat source or a heater. Mounted on the plate 5. As shown in FIG. 3, each presser plate 3, 4 abuts each end face of the combustion cylinder 1 via each end face packing 6 that overlaps each end face.

燃焼筒１は、図２及び図４に示す如く、多数の炎孔７ａを有するセラミック製の短冊状の燃焼板７の複数枚(例えば、６枚)を筒状に組み合わせて構成される。各燃焼板７，７間には、燃焼板７の側縁に沿うサイドパッキン８が介設されている。尚、燃焼板７の端部寄りの部分には炎孔７ａは形成されていないが、燃焼板７の成形時の収縮率の均一化等の成形上の理由により、燃焼板７の端部寄りの部分に盲孔状のダミー炎孔７ｂを形成している。   As shown in FIGS. 2 and 4, the combustion cylinder 1 is formed by combining a plurality of (for example, six) strip-like combustion plates 7 made of ceramic having a plurality of flame holes 7a into a cylindrical shape. Between each combustion plate 7, a side packing 8 is provided along the side edge of the combustion plate 7. In addition, although the flame hole 7a is not formed in the part near the end of the combustion plate 7, it is close to the end of the combustion plate 7 due to molding reasons such as uniform shrinkage when the combustion plate 7 is molded. A blind flame-shaped dummy flame hole 7b is formed in the portion.

図３(ａ)を参照して、取付板５の中央部にはガス流入口５ａが開設されている。そして、環状に形成した一端側の押え板３の外面に、取付板５をガス流入口５ａが押え板３の内周空間に臨むようにスポット溶接等で固定している。また、連結部材２は角筒状であって、一端部が取付板５のガス流入口５ａの周縁部内面にスポット溶接等で固定される。従って、一端側の押え板３は、連結部材２の一端部に取付板５を介して固定されることになる。連結部材２の周面には多数の透孔２ａが形成されており、ガス流入口５ａから流入する燃料ガスと一次空気との混合ガスがこれら透孔２ａを介して燃焼筒１内に供給され、各燃焼板６の炎孔６ａから噴出して燃焼する。ここで、連結部材２は、燃焼筒１内に混合ガスを均一に分布させるための分布管として機能する。   Referring to FIG. 3 (a), a gas inlet 5a is opened at the center of the mounting plate 5. The mounting plate 5 is fixed to the outer surface of the presser plate 3 on the one end side formed in an annular shape by spot welding or the like so that the gas inlet 5a faces the inner peripheral space of the presser plate 3. The connecting member 2 has a rectangular tube shape, and one end is fixed to the inner surface of the peripheral edge of the gas inlet 5a of the mounting plate 5 by spot welding or the like. Accordingly, the holding plate 3 on one end side is fixed to one end portion of the connecting member 2 via the mounting plate 5. A large number of through holes 2a are formed in the peripheral surface of the connecting member 2, and a mixed gas of fuel gas and primary air flowing in from the gas inlet 5a is supplied into the combustion cylinder 1 through these through holes 2a. The gas is ejected from the flame hole 6a of each combustion plate 6 and burned. Here, the connecting member 2 functions as a distribution tube for uniformly distributing the mixed gas in the combustion cylinder 1.

連結部材２の他端部にはキャップ２ｂが固着されており、このキャップ２ｂには、環状に形成した他端側の押え板４の内周に嵌挿される凸部２ｃが形成されている。バーナの組立てに際しては、先ず、燃焼筒１に連結部材２を挿入して、燃焼筒１の一端面に、一端側の押え板３を端面パッキン６を介して当接させ、次に、燃焼筒１の他端面に、他端側の押え板４を端面パッキン６を介して当接させる。この際、押え板４の内周に凸部２ｃが嵌挿される。そして、最後に凸部２ｃを軸方向内方に押し潰す。これによれば、押え板４が軸方向内方に押圧された状態で連結部材２にかしめ固定されることになり、両押え板３，４間に燃焼筒１がしっかりと挟持される。   A cap 2b is fixed to the other end portion of the connecting member 2, and a convex portion 2c is formed on the cap 2b. The convex portion 2c is fitted into the inner periphery of the press plate 4 on the other end side formed in an annular shape. When assembling the burner, first, the connecting member 2 is inserted into the combustion cylinder 1, the presser plate 3 on one end side is brought into contact with one end surface of the combustion cylinder 1 through the end face packing 6, and then the combustion cylinder The holding plate 4 on the other end side is brought into contact with the other end surface of 1 through an end face packing 6. At this time, the convex portion 2 c is inserted into the inner periphery of the presser plate 4. Finally, the convex portion 2c is crushed inward in the axial direction. According to this, the presser plate 4 is caulked and fixed to the connecting member 2 while being pressed inward in the axial direction, and the combustion cylinder 1 is firmly held between the presser plates 3 and 4.

各押え板３，４の外周には、軸方向内方に屈曲する筒状のフランジ部３ａ，４ａが曲成されている。また、各燃焼板７の端部外面には、径方向内方に窪む窪み部７ｃが形成され、更に、端面パッキン６の外周には、図４に示す如く、各燃焼板７の窪み部７ｃに重なる外周パッキン部６ａが周方向の間隔を存して複数延出されている。更に、燃焼筒１の一端側と他端側の端部外面には、周囲１箇所を切欠いたＣ形の弾性リングから成るリング部材９が燃焼板７の窪み部７ｃに係合するように装着されており、リング部材９により複数の燃焼板７が筒状に結束されている。尚、本実施形態では、リング部材９を断面円形のばね材で形成しているが、断面角形のばね材で形成しても良い。   Cylindrical flange portions 3a and 4a that are bent inward in the axial direction are formed on the outer periphery of each presser plate 3 and 4. Further, a hollow portion 7c that is recessed radially inward is formed on the outer surface of the end portion of each combustion plate 7, and further, a recess portion of each combustion plate 7 is formed on the outer periphery of the end surface packing 6 as shown in FIG. A plurality of outer peripheral packing portions 6 a overlapping 7 c are extended at intervals in the circumferential direction. Further, a ring member 9 made of a C-shaped elastic ring with a notch at one periphery is mounted on the outer surface of one end side and the other end side of the combustion cylinder 1 so as to engage with the recess 7c of the combustion plate 7. The plurality of combustion plates 7 are bundled in a cylindrical shape by the ring member 9. In the present embodiment, the ring member 9 is formed of a spring material having a circular cross section, but may be formed of a spring material having a square cross section.

各押え板３，４を各端面パッキン６を介して燃焼筒１の各端面に当接させる際、フランジ部３ａ，４ａにより各外周パッキン部６ａが基端側から軸方向内方に折り曲げられて、図３(ｂ)に明示するように、各燃焼板７の窪み部７ｃとフランジ部３ａ，４ａの内面との間に各外周パッキン部６ａが挟み込まれる。ここで、フランジ部３ａ，４ａの内径は、このフランジ部３ａ，４ａの内面と窪み部７ｃとの間に外周パッキン部６ａが所定の締め代分だけ圧縮されて挟み込まれるように設定されている。そのため、外周フランジ部６ａの圧縮反力により燃焼板７が径方向内方に締め付けられ、この締め付け力で各燃焼板７，７間のサイドパッキン８が圧縮される。これにより、サイドパッキン８が燃焼板７になじみ、各燃焼板７，７間のシール性が確保される。   When the presser plates 3 and 4 are brought into contact with the end faces of the combustion cylinder 1 via the end face packings 6, the outer peripheral packing parts 6a are bent inward in the axial direction from the base end side by the flange parts 3a and 4a. As clearly shown in FIG. 3 (b), the outer peripheral packing portions 6a are sandwiched between the recess portions 7c of the combustion plates 7 and the inner surfaces of the flange portions 3a and 4a. Here, the inner diameters of the flange portions 3a and 4a are set so that the outer peripheral packing portion 6a is compressed by a predetermined tightening allowance between the inner surfaces of the flange portions 3a and 4a and the recess portion 7c. . Therefore, the combustion plate 7 is tightened radially inward by the compression reaction force of the outer peripheral flange portion 6a, and the side packing 8 between the combustion plates 7 and 7 is compressed by this tightening force. Thereby, the side packing 8 becomes familiar with the combustion plate 7, and the sealing performance between the combustion plates 7 and 7 is ensured.

ところで、外周パッキン部６ａを設けずに、フランジ部３ａ，４ａで燃焼板７を径方向内方に締め付けるには、フランジ部３ａ，４ａの内径を燃焼筒１の端部の自由状態(サイドパッキン８の圧縮前の状態)での外径よりも小さくする必要がある。そのため、燃焼筒１に対する押え板３，４の組み付け時に燃焼板７の端部外面をフランジ部３ａ，４ａで削ってしまうことがあり、押え板３，４の組み付けが非常に困難になる。これに対し、本実施形態では、フランジ部３ａ，４ａの内径を燃焼筒１の端部の自由状態での外径より外周パッキン部６ａの圧縮状態での厚さ分だけ大きく設定できる。そのため、燃焼筒１に対する押え板３，４の組み付け時に、燃焼板７の端部外面がフランジ部３ａ，４ａで削られることはなく、燃焼筒１に対する押え板３，４の組み付けが容易になる。更に、本実施形態では、フランジ部３ａ，４ａの軸方向内端部に、軸方向内方に向かって拡径するテーパー部３ｂ，４ｂを形成している。そのため、押え板３，４の組み付け時にフランジ部３ａ，４ａの端縁が外周パッキン部６ａに食い込むようなことが防止され、燃焼筒１に対する押え板３，４の組み付けが一層容易になる。   By the way, in order to tighten the combustion plate 7 radially inward with the flange portions 3a and 4a without providing the outer periphery packing portion 6a, the inner diameter of the flange portions 3a and 4a is set to the free state (side packing of the combustion cylinder 1). It is necessary to make it smaller than the outer diameter in the state before compression 8). Therefore, when the presser plates 3 and 4 are assembled to the combustion cylinder 1, the outer surface of the end of the combustion plate 7 may be scraped by the flange portions 3a and 4a, which makes it very difficult to assemble the presser plates 3 and 4. In contrast, in the present embodiment, the inner diameters of the flange portions 3a and 4a can be set larger than the outer diameter in the free state of the end portion of the combustion cylinder 1 by the thickness in the compressed state of the outer peripheral packing portion 6a. Therefore, when the presser plates 3 and 4 are assembled to the combustion cylinder 1, the outer surface of the end of the combustion plate 7 is not scraped by the flange portions 3a and 4a, and the assembly of the presser plates 3 and 4 to the combustion cylinder 1 becomes easy. . Further, in the present embodiment, tapered portions 3b and 4b having diameters increasing inward in the axial direction are formed at the inner ends in the axial direction of the flange portions 3a and 4a. Therefore, it is possible to prevent the end edges of the flange portions 3a and 4a from biting into the outer peripheral packing portion 6a when the presser plates 3 and 4 are assembled, and the assembly of the presser plates 3 and 4 to the combustion cylinder 1 is further facilitated.

また、燃焼板７の窪み部７ｃの軸方向長さはフランジ部３ａ，４ａの軸方向長さより短く設定されている。そして、各押え板３，４の組み付け時にリング部材９がフランジ部３ａ，４ａ，に押されて軸方向内方にずれても、燃焼板７の窪み部７ｃの軸方向内端の段差でリング部材９のそれ以上のずれが阻止されるため、リング部材９は、フランジ部３ａ，４ａの内側から抜け出ることはない。従って、リング部材９は、燃焼筒１の外面の外周パッキン部６ａに対し軸方向内方に隣接する部分に確実に保持される。そして、燃焼板７の窪み部７ｃとフランジ部３ａ，４ａの内面との間の隙間がリング部材９により閉塞される。   The axial length of the recess 7c of the combustion plate 7 is set shorter than the axial length of the flange portions 3a and 4a. Even if the ring member 9 is pushed by the flange portions 3a, 4a and is displaced inward in the axial direction when the presser plates 3, 4 are assembled, the ring is caused by the step at the inner end in the axial direction of the recessed portion 7c of the combustion plate 7. Since further displacement of the member 9 is prevented, the ring member 9 does not come out from the inside of the flange portions 3a and 4a. Therefore, the ring member 9 is reliably held in a portion adjacent to the inner side in the axial direction with respect to the outer peripheral packing portion 6 a on the outer surface of the combustion cylinder 1. Then, the gap between the recess 7 c of the combustion plate 7 and the inner surfaces of the flange portions 3 a and 4 a is closed by the ring member 9.

ここで、端面パッキン６およびサイドパッキン８は、セラミック繊維にバインダを含浸させて成形したセラミックパッキンで構成されており、時間の経過でバインダが次第に熱分解して消失し、厚みが減少する(痩せる)。そして、外周パッキン部６ａが痩せると、燃焼板７の締め付け力が低下する。然し、燃焼板７はリング部材９により筒状に結束されているため、燃焼板７が径方向外方にずれて、燃焼板７，７間からのガス漏れを生ずるようなことは防止される。また、サイドパッキン８が痩せると、弾性リングで構成されるリング部材９の弾力により、各燃焼板７はサイドパッキン８が痩せ分だけ燃焼板７，７間の隙間を詰めるように径方向内方に押し動かされ、燃焼筒１がサイドパッキン８の痩せ分だけ縮径される。従って、サイドパッキン８が痩せても、燃焼板７，７間のシール性は確保され、ガス漏れは確実に防止される。   Here, the end face packing 6 and the side packing 8 are made of ceramic packing formed by impregnating a ceramic fiber with a binder, and the binder gradually decomposes and disappears over time, and the thickness decreases (skins). ). And if the outer periphery packing part 6a is thinned, the clamping force of the combustion plate 7 will fall. However, since the combustion plate 7 is bound in a cylindrical shape by the ring member 9, it is prevented that the combustion plate 7 is displaced radially outward to cause gas leakage between the combustion plates 7, 7. . Further, when the side packing 8 is thinned, due to the elasticity of the ring member 9 formed of an elastic ring, each combustion plate 7 is radially inward so that the gap between the combustion plates 7 and 7 is reduced by the amount of the side packing 8 leaning. The combustion cylinder 1 is reduced in diameter by the lean amount of the side packing 8. Therefore, even if the side packing 8 is thin, the sealing performance between the combustion plates 7 and 7 is ensured, and gas leakage is reliably prevented.

外周パッキン部６ａの劣化が更に進むと、外周パッキン部６ａが端面パッキン６から分離することがあるが、燃焼板７の窪み部７ｃとフランジ部３ａ，４ａの内面との間の隙間はリング部材９により閉塞されているため、この隙間から外周パッキン部６ａが抜け落ちることない。従って、抜け落ちた外周パッキン部６ａが炎に触れて燃焼不良を生ずるようなことは確実に防止される。尚、リング部材９による燃焼板７の窪み部７ｃとフランジ部３ａ，４ａの内面との間の隙間の閉塞の程度は、外周パッキン部６ａの抜けを阻止できる程度であれば十分であり、この隙間を完全に閉塞しなくても良い。また、燃焼板７の窪み部７ｃとフランジ部３ａ，４ａの内面との間の隙間の開口端となるフランジ部３ａ，４ａの軸方向内端部の隙間が外周パッキン部６ａの抜けを阻止できる程度に閉塞される限り、リング部材９がフランジ部３ａ，４ａの内側から部分的に露出していても良い。但し、リング部材９の熱による劣化を抑制するには、本実施形態のように、リング部材９をフランジ部３ａ，４ａの内側に完全に収めることが望ましい。   If the deterioration of the outer peripheral packing portion 6a further progresses, the outer peripheral packing portion 6a may be separated from the end face packing 6, but the gap between the recessed portion 7c of the combustion plate 7 and the inner surfaces of the flange portions 3a and 4a is a ring member. 9, the outer peripheral packing portion 6 a does not fall out from this gap. Accordingly, it is possible to reliably prevent the outer peripheral packing portion 6a that has fallen out from coming into contact with the flame and causing poor combustion. It should be noted that the degree of blockage of the gap between the hollow portion 7c of the combustion plate 7 and the inner surfaces of the flange portions 3a and 4a by the ring member 9 is sufficient as long as it can prevent the outer peripheral packing portion 6a from coming off. It is not necessary to completely close the gap. Further, the gap at the inner end in the axial direction of the flanges 3a and 4a, which is the opening end of the gap between the recess 7c of the combustion plate 7 and the inner surfaces of the flanges 3a and 4a, can prevent the outer packing 6a from coming off. The ring member 9 may be partially exposed from the inside of the flange portions 3a and 4a as long as it is blocked to the extent. However, in order to suppress deterioration of the ring member 9 due to heat, it is desirable to completely fit the ring member 9 inside the flange portions 3a and 4a as in this embodiment.

以上、各燃焼板７，７間にサイドパッキン８を介設する実施形態について説明したが、燃焼板７の側縁を隣接する燃焼板７の側縁に直接接触させてサイドパッキン８を省略することも可能である。この場合は、サイドパッキン８の痩せに応じて燃焼筒１を縮径させる必要はない。従って、リング部材９は複数の燃焼板７を筒状に単純に結束するだけで良い。図５はこのような実施形態を示している。このものでは、リング部材９を、周囲１箇所にスポット溶接のための突合せ部９ａを有するバンドで構成し、このバンド(リング部材)９を、燃焼筒１の各端部の外面に、上記実施形態と同様に燃焼板７の各端部の窪み部７ｃに係合するように装着して、複数の燃焼板７を結束している。そして、押え板４のフランジ部４ａにバンド９の突合せ部９ａに対応するスリット状の切欠き４ｃを形成し、燃焼筒１の端部に、押え板４を端面パッキン６を挟むようにして装着したときに、突合せ部９ａが切欠き４ｃに挿入されるようにしている。このものでも、燃焼板７の窪み部７ｃとフランジ部４ａの内面との間の隙間はバンド９により閉塞され、この隙間から外周パッキン部６ａが抜け落ちることが防止される。ここで、図５には、一端側の押え板３が示されていないが、この押え板３のフランジ部３ａにも、燃焼筒１の一端側の端部外面に装着するバンドの突合せ部に対応する切欠きを形成する。尚、バンド９の突合せ部９ａは、燃焼筒１の端部外面へのバンド９の装着工程の前後何れでスポット溶接しても良い。   The embodiment in which the side packing 8 is interposed between the combustion plates 7 and 7 has been described above, but the side packing 8 is omitted by making the side edge of the combustion plate 7 directly contact the side edge of the adjacent combustion plate 7. It is also possible. In this case, it is not necessary to reduce the diameter of the combustion cylinder 1 according to the thinness of the side packing 8. Therefore, the ring member 9 may simply bind the plurality of combustion plates 7 into a cylindrical shape. FIG. 5 shows such an embodiment. In this structure, the ring member 9 is constituted by a band having a butting portion 9a for spot welding at one place around the periphery, and the band (ring member) 9 is formed on the outer surface of each end portion of the combustion cylinder 1 as described above. Similarly to the embodiment, the plurality of combustion plates 7 are bundled by being mounted so as to be engaged with the recessed portions 7 c at the respective end portions of the combustion plates 7. When a slit-like notch 4c corresponding to the abutting portion 9a of the band 9 is formed in the flange portion 4a of the holding plate 4, and the holding plate 4 is attached to the end of the combustion cylinder 1 with the end face packing 6 being sandwiched therebetween In addition, the butt portion 9a is inserted into the notch 4c. Even in this case, the gap between the recessed portion 7c of the combustion plate 7 and the inner surface of the flange portion 4a is closed by the band 9, and the outer peripheral packing portion 6a is prevented from falling off from this gap. Here, FIG. 5 does not show the holding plate 3 on the one end side, but the flange portion 3a of the holding plate 3 also has a butt portion of a band attached to the outer surface of the end portion on the one end side of the combustion cylinder 1. A corresponding notch is formed. The butting portion 9a of the band 9 may be spot welded before or after the step of attaching the band 9 to the outer surface of the end of the combustion cylinder 1.

また、各燃焼板７，７間にサイドパッキン８を介設するバーナであっても、サイドパッキン８の痩せによるガス漏れが左程問題にならない場合には、リング部材９として上記バンドを用いても良い。また、上記実施形態では、端面パッキン６の外周に、複数の燃焼板７に対応する複数の外周パッキン部６ａを延出したが、端面パッキン６の外周に軸方向に屈曲する筒状の外周パッキン部を延出することも可能である。   Further, even in the case of a burner in which the side packing 8 is interposed between the combustion plates 7 and 7, if the gas leakage due to the side packing 8 does not become a problem to the left, the above band is used as the ring member 9. Also good. In the above embodiment, a plurality of outer periphery packing portions 6 a corresponding to the plurality of combustion plates 7 are extended to the outer periphery of the end surface packing 6, but the cylindrical outer periphery packing is bent in the axial direction to the outer periphery of the end surface packing 6. It is also possible to extend the part.

本発明の第１実施形態の筒状バーナの平面図。The top view of the cylindrical burner of 1st Embodiment of this invention. 図１のＩＩ−ＩＩ線で切断した断面図。Sectional drawing cut | disconnected by the II-II line | wire of FIG. (ａ)図２のＩＩＩ−ＩＩＩ線で切断した断面図、(ｂ)図３(ａ)の丸ｂで囲った部分の拡大断面図。(a) Sectional drawing cut | disconnected by the III-III line | wire of FIG. 2, (b) The expanded sectional view of the part enclosed with the circle | round | yen b of FIG. 3 (a). 図１のバーナの燃焼筒の斜視図。The perspective view of the combustion cylinder of the burner of FIG. 本発明の第２実施形態の筒状バーナの要部の分解状態の斜視図。The perspective view of the decomposition | disassembly state of the principal part of the cylindrical burner of 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１…燃焼筒、２…連結部材、３，４…押え板、３ａ，４ａ…フランジ部、６…端面パッキン、６ａ…外周パッキン部、７…燃焼板、７ａ…炎孔、７ｃ…窪み部、８…サイドパッキン、９…リング部材。   DESCRIPTION OF SYMBOLS 1 ... Combustion cylinder, 2 ... Connecting member, 3, 4 ... Holding plate, 3a, 4a ... Flange part, 6 ... End face packing, 6a ... Outer packing part, 7 ... Combustion plate, 7a ... Flame hole, 7c ... Recessed part, 8 ... side packing, 9 ... ring member.

Claims (3)

多数の炎孔を有する複数の短冊状の燃焼板を筒状に組み合わせて構成される燃焼筒と、燃焼筒の内側を軸方向にのびる連結部材と、連結部材の両端に固定される一対の押え板とを備え、各押え板を燃焼筒の各端面に該各端面に重なる各端面パッキンを介して当接させて、両押え板により燃焼筒を軸方向両側から挟持するようにした筒状バーナにおいて、
各端面パッキンの外周に、各燃焼板の端部外面に重なる外周パッキン部を延出すると共に、各押え板の外周に、軸方向内方に屈曲する筒状のフランジ部を曲成して、このフランジ部の内面と各燃焼板の端部外面との間に外周パッキン部が所定の締め代分だけ圧縮されて挟み込まれるようにすると共に、
燃焼筒の外面の外周パッキン部に対し軸方向内方に隣接する部分に、複数の燃焼板を筒状に結束するリング部材を装着し、各燃焼板の端部外面と各押え板のフランジ部の内面との間に生ずる隙間をリング部材により閉塞することを特徴とする筒状バーナ。 A combustion cylinder configured by combining a plurality of strip-shaped combustion plates having a large number of flame holes in a cylindrical shape, a connecting member extending in the axial direction inside the combustion cylinder, and a pair of pressers fixed to both ends of the connecting member A cylindrical burner, wherein each presser plate is brought into contact with each end face of the combustion cylinder via each end face packing so as to sandwich the combustion cylinder from both sides in the axial direction. In
On the outer periphery of each end surface packing, an outer peripheral packing portion that overlaps the outer surface of the end portion of each combustion plate is extended, and on the outer periphery of each presser plate, a cylindrical flange portion that is bent inward in the axial direction is formed, The outer periphery packing portion is compressed and sandwiched between the inner surface of the flange portion and the outer end surface of each combustion plate by a predetermined tightening allowance ,
A ring member that binds a plurality of combustion plates in a cylindrical shape is attached to a portion adjacent to the inner periphery in the axial direction with respect to the outer peripheral packing portion of the outer surface of the combustion tube, and the outer surface of each combustion plate and the flange portion of each presser plate A cylindrical burner characterized in that a gap formed between the inner surface and the inner surface is closed by a ring member . 前記各燃焼板の端部外面に、径方向内方に窪む窪み部を形成し、前記各押え板のフランジ部の内径を、このフランジ部の内面と窪み部との間に前記外周パッキン部が所定の締め代分だけ圧縮されて挟み込まれるように設定すると共に、前記リング部材を窪み部に係合するように装着することを特徴とする請求項１記載の筒状バーナ。 A hollow portion recessed radially inward is formed on the outer surface of the end portion of each combustion plate, and the inner diameter of the flange portion of each pressing plate is set between the inner surface and the hollow portion of the flange portion. There it sets so as to be sandwiched compressed by a predetermined tightening allowance, the tubular burner according to claim 1, wherein the mounting to engage the ring member recess. 請求項１又は２に記載の筒状バーナであって、前記複数の燃焼板を、各燃焼板間に各燃焼板の側縁に沿うサイドパッキンを介設した状態で筒状に組み合わせて前記燃焼筒を構成するものにおいて、
前記リング部材を、複数の燃焼板を径方向内方に弾力的に締め付ける弾性リングで構成することを特徴とする筒状バーナ。 The cylindrical burner according to claim 1 or 2 , wherein the plurality of combustion plates are combined in a cylindrical shape with a side packing along a side edge of each combustion plate interposed between the combustion plates. In what constitutes the cylinder,
A cylindrical burner characterized in that the ring member is formed of an elastic ring that elastically clamps a plurality of combustion plates radially inward.
JP2004096337A 2004-03-29 2004-03-29 Cylindrical burner Expired - Fee Related JP3996139B2 (en)

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EP1840461A1 (en) * 2006-03-29 2007-10-03 Aeromatix Limited End cap for a gas burner
US20120301836A1 (en) * 2011-05-27 2012-11-29 Kazuyuki Akagi Plate type burner
JP7442804B2 (en) * 2020-05-26 2024-03-05 株式会社トヨトミ Radiant combustion device
GB202205838D0 (en) * 2022-04-21 2022-06-08 Kennedy John Francis One piece multi-angled multi-height multi-base pistol burner

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JPS62125208A (en) * 1985-11-26 1987-06-06 Matsushita Electric Ind Co Ltd Combustion device
FR2700604B1 (en) * 1993-01-15 1995-04-07 Joseph Le Mer Method of manufacturing a gas burner element, element thus obtained, and burner using it.
DE4418964A1 (en) * 1994-05-31 1995-12-07 Johannes Wilhelmus Graat Hollow cylindrical burner head and process for its manufacture
DE19627103C1 (en) * 1996-07-05 1997-07-24 Schwank Gmbh Tubular ceramic radiation burner for infra-red radiation
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