JP3631567B2 - Line burner - Google Patents

Line burner Download PDF

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Publication number
JP3631567B2
JP3631567B2 JP28151196A JP28151196A JP3631567B2 JP 3631567 B2 JP3631567 B2 JP 3631567B2 JP 28151196 A JP28151196 A JP 28151196A JP 28151196 A JP28151196 A JP 28151196A JP 3631567 B2 JP3631567 B2 JP 3631567B2
Authority
JP
Japan
Prior art keywords
plate
flame hole
hole block
pipe
corrugated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP28151196A
Other languages
Japanese (ja)
Other versions
JPH10110913A (en
Inventor
元仁 大福地
陽一 西本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP28151196A priority Critical patent/JP3631567B2/en
Publication of JPH10110913A publication Critical patent/JPH10110913A/en
Application granted granted Critical
Publication of JP3631567B2 publication Critical patent/JP3631567B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は、コンベア式パンオーブン等に使用されるハニカム炎孔型のラインバーナに関するものである。
【0002】
【従来の技術】
図1はこの種のラインバーナの全体構造を示し、図6はその炎孔部分の構造の従来例を示したもので、ステンレス製の薄板よりなるリボン状の波板2を長さ方向に約半ピッチずつずらせて複数枚積層し、幅方向に多数の透孔4が貫通したハニカム構造の炎孔ブロックAを形成して、この炎孔ブロックAをパイプ状のバーナ本体5の母線に沿って穿設した割溝6内に保持せしめたものである。このようにすれば、切削加工等を要せずに炎孔ブロックAを安価なハニカム構造体で構成することができるので、ラインバーナの製造コストを大幅に低減することができる。
【0003】
【発明が解決しようとする課題】
しかしながら上述のようなハニカム構造体よりなる炎孔ブロックAを使用した場合、火炎が不揃いを生じてターンダウン比が大きくとれず、またハニカム構造体の加工が面倒である上に、割溝6内での炎孔ブロックAの保持が容易でないという欠点があった。すなわち図6のようなハニカム構造体で構成される炎孔ブロックAは、両側縁部の炎孔4ほど二次空気が豊富に供給されるために、中央部分の炎孔4では燃焼が緩慢となって火炎が長くなる。また波板2が弾性を有するために寸法精度が出にくく、炎孔面積に大小が生じるために火炎長が揃わず、これがターンダウン比向上の障害となる上に、火力を絞った時に燃焼が不安定となる原因となっていた。
【0004】
更に炎孔ブロックAを割溝6内に保持させるために、従来はハニカム構造体に貫通孔を設けてピンを挿通し、ピンの両端をバ−ナ本体5に溶接していたが、波板2を変形させずに貫通孔を加工するのは容易でなく、炭酸ガスレーザ等を使用する必要がある上に、ピンを貫通した部分の燃料供給が悪くなって火炎の不揃いの原因となっていた。
本発明はこれらの問題点を解消し、火炎長が均一で燃焼が安定し、しかもハニカム構造体の加工や組立がきわめて簡単なこの種のラインバーナを提供することを目的とするものである。
【0005】
【課題を解決するための手段】
本発明によるラインバーナは、図1〜4に示すように、中央に厚板1を挟み、両側に薄板よりなる各2枚の波板2と平板3を交互に重ね合わせて、幅方向に多数の透孔4が貫通した細長形の炎孔ブロックAを形成し、バーナ本体を構成するパイプ5の母線に沿って設けた割溝6内に上記炎孔ブロックAを保持せしめたものであって、ハニカム構造体の中央に厚板1を介在させると共に、厚板1の両側の炎孔列をそれぞれ2列としたことにより、各炎孔列へ二次空気が均等に供給されるようにし、それによって火炎長の不揃いを防止すると共に、隣り合う波板2間に平板3を挟むことによってハニカム構造体の組立を容易にし、寸法精度を向上すると共に、炎孔面積の不揃いを解消したものである。
【0006】
【発明の実施の形態】
図1〜4は本発明の一実施例を示したもので、炎孔ブロックAを構成するハニカム構造体は、スペーサの役目をする厚板1の両側に、それぞれステンレス製の薄板よりなる波板2と平板3とを2枚ずつ用いて、左右各2列の炎孔列3を形成したものである。こうして形成された炎孔ブロックAは、パイプ状のバーナ本体5の母線に沿って設けられた割溝6内に嵌挿され、割溝6の両側面間に保持される。
【0007】
また炎孔ブロックAを割溝6内に挿着する方法として従来は電気溶接が行われていたが、本発明(請求項2)では溶接を省略し、炎孔ブロックAの各部材を単に重ね合わせるのみで、ハニカム構造体のばね性を利用して割溝6の両側面間に挟持させる。すなわち炎孔ブロックAの厚板1の幅を波板2及び平板3の幅よりも大きくして、その余分の幅をパイプ5の内方に向かって突出させ、この突出部分の複数箇所に貫設したピン7の先端をパイプ5に穿設したピン挿通孔8に溶接して、このピン7により割溝6内に挿入された波板2及び平板3を係止させるものであり、またピン7の溶接時にパイプ5をバイスで挟み、両側から加圧しながら溶接を行うことにより、割溝6の内側面と厚板1間に波板2と平板3を挟持させる。このようにすれば、炎孔ブロックAは波板2のばね性によって割溝6内に強固に保持されるのである。なお厚板1に穿設されたピン挿通孔9は、厚板1の全長の両端付近では長手方向に延びた長孔とし、燃焼時における炎孔ブロックAの熱膨張を吸収するようにしている。
【0008】
【実施例】
炎孔ブロックの厚み10mm,全長1600mm,ステンレス製の厚板の厚み5mm,波板及び平板には厚さ0.3mmのステンレス薄板を使用し、波板の厚み1.2mm,ピンの直径3mm,パイプの内径40mmとして製作した本発明ラインバーナの燃焼状態を図5(a)に示した。同図(b)に示した従来例(図6)の燃焼状態と比較して、火炎長の不揃いや火炎の偏りがなくなり、またターンダウン時の燃焼の不安定もなくなって、ターンダウン比も改善された。
【0009】
【発明の効果】
本発明によるラインバーナは上述のように、炎孔ブロックAを構成するハニカム構造体の中央の厚板1をスペーサとし、両側にそれぞれ2列の炎孔列を配したことにより、各炎孔列に均等に二次空気が供給されると共に、隣接する火炎同士の干渉が防止できるので、火炎長の不揃いやターンダウン時の不安定燃焼を改善でき、またそれによってターンダウン比も向上するという利点がある。また中央の厚板1により炎孔ブロックAの剛性を増すことができるので、組立作業も容易になる上に、波板2間に平板3を介在させたことにより、波板2の弾性による寸法精度の低下も解消し得るという利点がある。
【0010】
更に請求項2の発明によれば、炎孔ブロックAを割溝6内に支持するピン7によって波板2及び平板3が係止されると共に、バーナ本体5を両側から挟圧しながらピン7の先端をバーナ本体5に溶接固定されるものであるから、従来のような波板同士の溶接を要することなく、単に各部材を重ね合わせるだけでハニカム構造体を構成することができる上に、変形し易いハニカム構造体にピン挿通孔9を穿設する必要がないので、製造コストの大幅な節減を図ることができるという利点がある。
【図面の簡単な説明】
【図1】本発明の一実施例を示す全体斜視図。
【図2】同上の要部上面図。
【図3】同上の横断面図。
【図4】同上の炎孔ブロックの要部斜視図。
【図5】本発明及び従来例の火炎形状の比較図。
【図6】従来例の要部上面図。
【符号の説明】
1 厚板
2 波板
3 平板
4 透孔あるいは炎孔
5 バーナ本体あるいはパイプ
6 割溝
7 ピン
8 ピン挿通孔
9 ピン挿通孔
A 炎孔ブロック
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a honeycomb flame hole type line burner used in a conveyor type bread oven or the like.
[0002]
[Prior art]
FIG. 1 shows the overall structure of this type of line burner, and FIG. 6 shows a conventional example of the structure of the flame hole portion. A ribbon-like corrugated plate 2 made of a stainless steel thin plate is arranged in the length direction. A plurality of layers are laminated with a shift of a half pitch, and a flame hole block A having a honeycomb structure with a large number of through holes 4 penetrating in the width direction is formed, and the flame hole block A is formed along the generatrix of the pipe-shaped burner body 5. It is held in the perforated split groove 6. In this way, the flame hole block A can be formed of an inexpensive honeycomb structure without requiring cutting or the like, so that the production cost of the line burner can be greatly reduced.
[0003]
[Problems to be solved by the invention]
However, when the flame hole block A made of the honeycomb structure as described above is used, the flames are not uniform, the turndown ratio cannot be increased, the processing of the honeycomb structure is troublesome, and the inside of the dividing groove 6 There is a drawback that it is not easy to hold the flame hole block A. That is, in the flame hole block A composed of the honeycomb structure as shown in FIG. 6, since the secondary air is supplied more abundantly at the flame holes 4 on both side edges, combustion is slow in the flame hole 4 in the central part. The flame becomes longer. In addition, since the corrugated plate 2 has elasticity, it is difficult to obtain dimensional accuracy, and because the flame hole area is large and small, the flame lengths are not uniform, which becomes an obstacle to improving the turndown ratio, and combustion occurs when the thermal power is reduced. It was a cause of instability.
[0004]
Further, in order to hold the flame hole block A in the dividing groove 6, conventionally, a honeycomb structure was provided with a through hole and a pin was inserted, and both ends of the pin were welded to the burner body 5. It is not easy to process the through-hole without deforming 2 and it is necessary to use a carbon dioxide laser or the like, and the fuel supply in the part that penetrates the pin is deteriorated, causing irregularities in the flame. .
An object of the present invention is to solve these problems, and to provide a line burner of this type in which the flame length is uniform, combustion is stable, and the honeycomb structure is extremely easy to process and assemble.
[0005]
[Means for Solving the Problems]
As shown in FIGS. 1 to 4, the line burner according to the present invention has a large number in the width direction, with a thick plate 1 sandwiched in the center and two corrugated plates 2 and flat plates 3 made of thin plates on each side. The elongated flame hole block A through which the through hole 4 is formed is formed, and the flame hole block A is held in the split groove 6 provided along the generatrix of the pipe 5 constituting the burner body. In addition, the thick plate 1 is interposed in the center of the honeycomb structure, and the flame hole rows on both sides of the thick plate 1 are respectively arranged in two rows so that the secondary air is uniformly supplied to each flame hole row, This prevents unevenness in the flame length and facilitates assembly of the honeycomb structure by sandwiching the flat plate 3 between the adjacent corrugated plates 2, improves dimensional accuracy, and eliminates unevenness in the flame hole area. is there.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an embodiment of the present invention. A honeycomb structure constituting a flame hole block A is a corrugated plate made of a thin plate made of stainless steel on both sides of a thick plate 1 serving as a spacer. 2 and two flat plates 3 are used to form two rows of flame holes 3 on the left and right. The flame hole block A thus formed is inserted into the split groove 6 provided along the generatrix of the pipe-shaped burner body 5 and is held between both side surfaces of the split groove 6.
[0007]
Conventionally, electric welding has been performed as a method for inserting the flame hole block A into the dividing groove 6, but in the present invention (Claim 2), welding is omitted, and each member of the flame hole block A is simply overlapped. Only by combining them, the honeycomb structure is held between both side surfaces of the split groove 6 by utilizing the spring property. That is, the width of the thick plate 1 of the flame hole block A is made larger than the widths of the corrugated plate 2 and the flat plate 3, and the extra width is projected toward the inside of the pipe 5 and penetrates into a plurality of portions of the projected portion. The tip of the provided pin 7 is welded to a pin insertion hole 8 formed in the pipe 5, and the corrugated plate 2 and the flat plate 3 inserted into the dividing groove 6 are locked by this pin 7. The corrugated plate 2 and the flat plate 3 are sandwiched between the inner surface of the split groove 6 and the thick plate 1 by sandwiching the pipe 5 with a vice at the time of welding 7 and performing welding while applying pressure from both sides. In this way, the flame hole block A is firmly held in the split groove 6 by the spring property of the corrugated plate 2. The pin insertion hole 9 formed in the thick plate 1 is a long hole extending in the longitudinal direction near both ends of the entire length of the thick plate 1 so as to absorb the thermal expansion of the flame hole block A during combustion. .
[0008]
【Example】
Flame block thickness 10 mm, total length 1600 mm, stainless steel plate thickness 5 mm, corrugated plate and flat plate 0.3 mm thick stainless steel plate, corrugated plate thickness 1.2 mm, pin diameter 3 mm, The combustion state of the line burner of the present invention manufactured with a pipe inner diameter of 40 mm is shown in FIG. Compared with the combustion state of the conventional example (FIG. 6) shown in FIG. 6B, there is no uneven flame length and unevenness of the flame, and there is no instability of combustion at the time of turndown, and the turndown ratio is also increased. Improved.
[0009]
【The invention's effect】
As described above, the line burner according to the present invention uses the thick plate 1 at the center of the honeycomb structure constituting the flame hole block A as a spacer, and two flame hole lines are arranged on both sides. Since the secondary air is supplied evenly and interference between adjacent flames can be prevented, it is possible to improve uneven flame length and unstable combustion during turndown, thereby improving the turndown ratio. There is. Further, since the rigidity of the flame hole block A can be increased by the thick plate 1 at the center, the assembling work is facilitated, and the flat plate 3 is interposed between the corrugated plates 2 so that the dimensions due to the elasticity of the corrugated plate 2 are obtained. There is an advantage that a decrease in accuracy can be eliminated.
[0010]
Further, according to the invention of claim 2, the corrugated plate 2 and the flat plate 3 are locked by the pin 7 which supports the flame hole block A in the dividing groove 6, and the pin 7 is pressed while the burner body 5 is clamped from both sides. Since the tip is welded and fixed to the burner body 5, a honeycomb structure can be formed by simply overlapping each member without requiring welding between corrugated plates as in the prior art. Since there is no need to drill the pin insertion holes 9 in the honeycomb structure that is easy to do, there is an advantage that the manufacturing cost can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing an embodiment of the present invention.
FIG. 2 is a top view of an essential part of the above.
FIG. 3 is a cross-sectional view of the above.
FIG. 4 is a perspective view of a main part of the flame hole block.
FIG. 5 is a comparative view of flame shapes of the present invention and a conventional example.
FIG. 6 is a top view of a main part of a conventional example.
[Explanation of symbols]
1 Thick plate 2 Corrugated plate 3 Flat plate 4 Through hole or flame hole 5 Burner body or pipe 6 Split groove 7 Pin 8 Pin insertion hole 9 Pin insertion hole A Flame hole block

Claims (2)

中央に厚板を挟み、両側に薄板よりなる各2枚の波板と平板を交互に重ね合わせて、幅方向に多数の透孔が貫通した細長形の炎孔ブロックを形成し、バーナ本体を構成するパイプの母線に沿って設けた割溝内に上記炎孔ブロックを保持せしめて成るラインバーナ。A thick plate is sandwiched in the center, and two corrugated plates and flat plates made of thin plates are alternately stacked on both sides to form an elongated flame hole block with many through holes in the width direction. A line burner in which the above-mentioned flame hole block is held in a split groove provided along a generatrix of a pipe constituting the pipe. 上記炎孔ブロックの厚板の幅を波板と平板の幅よりも大きくして、厚板の長手方向の複数箇所に貫設したピンの先端を上記パイプに穿設したピン挿通孔に溶接し、該ピンにより割溝内に挿入された波板及び平板を係止せしめると共に、ピン溶接時にパイプを両側から加圧することにより、割溝の内側面と厚板間に波板と平板を保持せしめて成る請求項1記載のラインバーナ。The width of the thick plate of the flame hole block is made larger than the width of the corrugated plate and the flat plate, and the tips of the pins penetrating at a plurality of locations in the longitudinal direction of the thick plate are welded to the pin insertion holes formed in the pipe. The corrugated plate and the flat plate inserted in the split groove are locked by the pin, and the corrugated plate and the flat plate are held between the inner surface of the split groove and the thick plate by pressurizing the pipe from both sides during pin welding. The line burner according to claim 1.
JP28151196A 1996-10-02 1996-10-02 Line burner Expired - Fee Related JP3631567B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28151196A JP3631567B2 (en) 1996-10-02 1996-10-02 Line burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28151196A JP3631567B2 (en) 1996-10-02 1996-10-02 Line burner

Publications (2)

Publication Number Publication Date
JPH10110913A JPH10110913A (en) 1998-04-28
JP3631567B2 true JP3631567B2 (en) 2005-03-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP28151196A Expired - Fee Related JP3631567B2 (en) 1996-10-02 1996-10-02 Line burner

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JP (1) JP3631567B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4501141B2 (en) * 2006-11-14 2010-07-14 日新工業株式会社 Gas firing device
JP5112405B2 (en) * 2009-09-15 2013-01-09 内外施設工業株式会社 Burner, gas firing device
CN102798123B (en) * 2011-05-26 2016-05-04 中山炫能燃气科技股份有限公司 A kind of infrared metal heater and preparation method thereof
US10174941B2 (en) * 2016-09-07 2019-01-08 Selas Heat Technology Company Llc Ribbon pack for gas burners
JP6408657B1 (en) * 2017-07-04 2018-10-17 株式会社ヤマザキエンジニアリング Gas burner equipment

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