JP2008020142A - Burner - Google Patents

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JP2008020142A
JP2008020142A JP2006192940A JP2006192940A JP2008020142A JP 2008020142 A JP2008020142 A JP 2008020142A JP 2006192940 A JP2006192940 A JP 2006192940A JP 2006192940 A JP2006192940 A JP 2006192940A JP 2008020142 A JP2008020142 A JP 2008020142A
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casing
burner
burner nozzle
outer casing
secondary air
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JP4718385B2 (en
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Takeshi Kuwabara
武 桑原
Yasushi Yoshino
靖 吉野
Shiro Fujishima
史郎 藤島
Takuya Moroishi
拓也 諸石
Jun Ono
小野  純
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T Rad Co Ltd
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T Rad Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To retain a casing outer surface of a burner at a low temperature, and to provide an inexpensive and easy-to-manufacture burner with a small parts count. <P>SOLUTION: An inner casing 8 like a flanged pot bottom is fit in an upper end of a metal funnel like outer casing 4, and an annular gap 7 is formed between its center hole 6 and a burner nozzle 3 tip. The outer casing 4 is communicated with a secondary air supply pipe 9, and its opening 9a is arranged so as to face a pot bottom like outer circumference of the inner casing 8. An outer casing 4 inner face and an inner casing 8 outer circumference face are cooled by secondary air 10 supplied from the secondary air supply pipe 9. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は主として小型の蒸発器に使用されるバーナであって、その外側ケーシングが外部に露出されるものに関する。   The present invention relates to a burner mainly used for a small evaporator, the outer casing of which is exposed to the outside.

燃料電池用改質器に供給する水蒸気を発生させる蒸発器は、小型軽量で且つ、負荷に対する応答性のよいものが望まれている。係る蒸発器のバーナの取付け構造として、本出願人はすでに特願2005−360224号としてバーナの取付け構造を提案している。   An evaporator that generates water vapor to be supplied to a reformer for a fuel cell is desired to be small and light and have good response to a load. As an attachment structure of the evaporator burner, the present applicant has already proposed a burner attachment structure as Japanese Patent Application No. 2005-360224.

これは図3に示す如く、バーナノズル3の先端部外周を漏斗状のケーシング17で被嵌し、その内側にセラミック等からなる断熱材16を配置し、断熱材16上にセラミック製のバーナ保炎管12を載置する。そして、そのバーナ保炎管12の外周に空間を空けて釣鐘体20を被嵌し、釣鐘体20の更に外周に空間を空けて内筒19および外筒18、更には保温材24を取付けたものである。そして、一次空気と燃料とを混合してバーナノズル3から噴出させるとともに、更に二次空気を供給して、バーナ保炎管12の内部で燃焼させるものである。   As shown in FIG. 3, the outer periphery of the tip of the burner nozzle 3 is fitted with a funnel-shaped casing 17, and a heat insulating material 16 made of ceramic or the like is disposed on the inside, and a ceramic burner flame-holding material is provided on the heat insulating material 16. Place the tube 12. Then, a space was provided on the outer periphery of the burner flame holding tube 12 to fit the bell body 20, and a space was further provided on the outer periphery of the bell body 20 to attach the inner cylinder 19 and the outer cylinder 18, and further to the heat insulating material 24. Is. Then, the primary air and the fuel are mixed and ejected from the burner nozzle 3, and further, secondary air is supplied and burned inside the burner flame holding tube 12.

その燃焼ガス28は、バーナ保炎管12の内側を上昇し、釣鐘体20の天井で下方にUターンし、その釣鐘体20の内周とバーナ保炎管12の外周との間を下降し、ついでその釣鐘体20のフランジ部でUターンし、釣鐘体20の外周と内筒19の内周との間をそれが上昇する。内筒19と外筒18との間には水が供給されるとともに、釣鐘体20の上方に図示ない水管が配置され、それらの内部の水が蒸発されるものである。   The combustion gas 28 rises inside the burner flame holding tube 12, makes a U-turn downward at the ceiling of the bell body 20, and descends between the inner periphery of the bell body 20 and the outer periphery of the burner flame holding tube 12. Then, a U-turn is made at the flange portion of the bell body 20, and it rises between the outer periphery of the bell body 20 and the inner periphery of the inner cylinder 19. Water is supplied between the inner cylinder 19 and the outer cylinder 18, and a water pipe (not shown) is disposed above the bell body 20, and the water inside them is evaporated.

上記のようなバーナは、ケーシング17の内側に断熱材16を配置しているものの、その内部が高温になるため、外側に露出するケーシング17表面も比較的高温となり、そこに触れると火傷のおそれがある。また、断熱材16をケーシング17の内部に保持させるため、ケーシング17の両端部に円筒金具26、環状止め金具27を必要とする。その結果、部品点数が多くなり、製作工数が増大してバーナのコストアップの要因となる。また、断熱材16自体も金属板に比べて製作が面倒で、高価とならざるをえない。
そこで本発明は、上記断熱材を不要としつつ、バーナのケーシング17を比較的低温に維持できるとともに、部品点数を少なくして、低コストのバーナを提供することを課題とする。
Although the above-described burner has the heat insulating material 16 disposed inside the casing 17, the inside of the burner becomes hot, so the surface of the casing 17 exposed to the outside becomes relatively hot, and there is a risk of burns if touched there. There is. Further, in order to hold the heat insulating material 16 inside the casing 17, a cylindrical metal fitting 26 and an annular clasp 27 are required at both ends of the casing 17. As a result, the number of parts increases, the number of manufacturing steps increases, and the cost of the burner increases. In addition, the heat insulating material 16 itself is more complicated to manufacture than a metal plate, and must be expensive.
Accordingly, an object of the present invention is to provide a low-cost burner that can maintain the casing 17 of the burner at a relatively low temperature while eliminating the above-described heat insulating material, and reduce the number of components.

本発明は、一次空気(1) と燃料(2) とを混合して噴出するバーナノズル(3) と、
そのバーナノズル(3) の外周を被嵌して外部に露出され、その端部がバーナノズル(3) の噴射方向の下流側に且つバーナノズル(3) 先端より前方に突出して漏斗状に拡開する金属製の外ケーシング(4) と、
その外ケーシング(4) の端部と前記バーナノズル(3) の先端の間を閉塞するように、その外ケーシング(4) の端部からバーナノズル(3) の中心側に延在されたフランジ部(5) および、そのフランジ部(5) の内縁から前記外ケーシング(4) の内面に対向して鍋底状に凹陥し、その中心に設けた中心孔(6) が前記バーナノズル(3) の先端外周に近接し、その先端外周との間に環状小隙(7) が形成された金属製の内ケーシング(8) と、
先端が前記外ケーシング(4) に連通すると共に、その開口(9a)が前記内ケーシング(8) の外周面に対向する二次空気供給管(9) と、を具備し、
その二次空気供給管(9)から流入される二次空気(10)が外ケーシング(4) と内ケーシング(8) との間の環状の空間(11)に供給され、それが外ケーシング(4) の内面を流通してその外ケーシング(4) を冷却しつつ、前記空間(11)から前記環状小隙(7)を通過するように構成したバーナである。
The present invention comprises a burner nozzle (3) for mixing and ejecting primary air (1) and fuel (2),
A metal that is fitted to the outer periphery of the burner nozzle (3) and exposed to the outside, and whose end projects downstream from the burner nozzle (3) in the injection direction and forward from the tip of the burner nozzle (3) and expands in a funnel shape An outer casing (4) made of
A flange portion extending from the end of the outer casing (4) to the center side of the burner nozzle (3) so as to block between the end of the outer casing (4) and the tip of the burner nozzle (3). 5) and a concave portion in the shape of a pan bottom facing the inner surface of the outer casing (4) from the inner edge of the flange portion (5), and a center hole (6) provided at the center is an outer periphery of the tip of the burner nozzle (3) A metal inner casing (8) in which an annular gap (7) is formed between the outer periphery and the outer periphery of the tip,
A secondary air supply pipe (9) whose front end communicates with the outer casing (4) and whose opening (9a) faces the outer peripheral surface of the inner casing (8),
Secondary air (10) flowing in from the secondary air supply pipe (9) is supplied to the annular space (11) between the outer casing (4) and the inner casing (8), which is 4) is a burner configured to pass through the annular gap (7) from the space (11) while flowing through the inner surface of 4) and cooling the outer casing (4).

本発明のバーナは、漏斗状に拡開する金属製の外ケーシング4の端部とバーナノズル3の先端との間を閉塞するように、金属製の内ケーシング8が設けられ、外ケーシング4と内ケーシング8とバーナノズル3とで囲まれた空間11に二次空気10が供給され、それが外ケーシング4の内面を流通してその外ケーシング4を冷却しつつ、環状小隙7に導かれるように構成したから、外ケーシング4は常に新たな二次空気10によって冷却され、外部に露出される外ケーシング4が高温になることを防止して、作業環境を良好にするとともに、火傷等の危険を防止できる。また、外ケーシング4および内ケーシング8は共に金属製のものであり、両者はプレス機械等により容易に製造できると共に、両者の接合も容易であり、製造コストが低下でき、それを安価に提供できる効果がある。   The burner according to the present invention is provided with a metal inner casing 8 so as to block between the end of the metal outer casing 4 that expands in a funnel shape and the tip of the burner nozzle 3. Secondary air 10 is supplied to a space 11 surrounded by the casing 8 and the burner nozzle 3 so that it flows through the inner surface of the outer casing 4 and cools the outer casing 4 while being guided to the annular gap 7. Since the outer casing 4 is always cooled by the new secondary air 10, the outer casing 4 exposed to the outside is prevented from being heated to a high temperature, improving the working environment and reducing the risk of burns and the like. Can be prevented. Further, both the outer casing 4 and the inner casing 8 are made of metal, and both can be easily manufactured by a press machine or the like, and the joining of both is easy, the manufacturing cost can be reduced, and it can be provided at low cost. effective.

次に、図面に基づいて本発明の実施の形態につき説明する。図1は本発明のバーナの要部縦断面図であり、図2はその一部破断分解斜視図である。   Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of an essential part of a burner according to the present invention, and FIG. 2 is a partially broken exploded perspective view thereof.

この例では、漏斗状に形成された外ケーシング4の中心にエジェクタからなるバーナノズル3が配置されている。バーナノズル3には軸線上に一次空気供給管14設けられ、その外周に燃料供給管15が取付けられている。外ケーシング4の上端には中心孔6を有する内ケーシング8が被嵌される。この内ケーシング8は外周にフランジ部5を有し、その内側が鍋底状に形成されている。そして、フランジ部5の周縁が外ケーシング4上端のフランジ部に載置され、両者間が溶接等により接合される。外ケーシング4の外周には二次空気供給管9が取付けられ、その開口9aが内ケーシング8の鍋底状の外周面に対向する。また、外ケーシング4に内ケーシング8を被嵌した状態で、内ケーシング8の中心孔6はバーナノズル3先端に近接し、その外周に環状小隙7を形成する。そして、バーナノズル3の外周と内ケーシング8の外周および外ケーシング4の内周面との間に空間11を形成する。   In this example, a burner nozzle 3 made of an ejector is arranged at the center of an outer casing 4 formed in a funnel shape. The burner nozzle 3 is provided with a primary air supply pipe 14 on the axis, and a fuel supply pipe 15 is attached to the outer periphery thereof. An inner casing 8 having a center hole 6 is fitted to the upper end of the outer casing 4. The inner casing 8 has a flange portion 5 on the outer periphery, and the inside thereof is formed in a pan bottom shape. And the periphery of the flange part 5 is mounted in the flange part of the outer casing 4 upper end, and both are joined by welding. A secondary air supply pipe 9 is attached to the outer periphery of the outer casing 4, and its opening 9 a faces the outer surface of the inner casing 8 in the form of a pan bottom. Further, with the inner casing 8 fitted on the outer casing 4, the center hole 6 of the inner casing 8 is close to the tip of the burner nozzle 3, and an annular gap 7 is formed on the outer periphery thereof. A space 11 is formed between the outer periphery of the burner nozzle 3, the outer periphery of the inner casing 8, and the inner peripheral surface of the outer casing 4.

このようにしてなるフランジ部5上にはバーナ保炎管12が載置される。そして、空気圧源からの一次空気供給管14に一次空気1が供給され、燃料供給管15に燃料2が供給され、一次空気1と燃料2との混合ガスがバーナノズル3先端から噴出され点火される。そして、二次空気供給管9からは二次空気10が空間11に供給され、それが内ケーシング8外周に吹き付けられるとともに、外ケーシング4内周を流通してバーナノズル3の先端と内ケーシング8の中心孔6との間に形成された環状小隙7より、上方に噴出する。そして、バーナ保炎管12内で燃焼し、その回りを高温にする。このとき二次空気10が継続して噴出することにより、継続的に外ケーシング4と内ケーシング8とが冷却される。
なお、二次空気10はコンプレッサからの圧縮空気であり、空間11内で乱流状態で供給される。
A burner flame holding tube 12 is placed on the flange portion 5 thus formed. The primary air 1 is supplied from the air pressure source to the primary air supply pipe 14, the fuel 2 is supplied to the fuel supply pipe 15, and the mixed gas of the primary air 1 and fuel 2 is ejected from the tip of the burner nozzle 3 and ignited. . Then, the secondary air 10 is supplied from the secondary air supply pipe 9 to the space 11 and blown to the outer periphery of the inner casing 8, and also flows through the inner periphery of the outer casing 4 and the tip of the burner nozzle 3 and the inner casing 8. It ejects upward from an annular gap 7 formed between the center hole 6 and the center hole 6. Then, it burns in the burner flame holding tube 12, and the surroundings are heated to a high temperature. At this time, the secondary air 10 is continuously ejected, whereby the outer casing 4 and the inner casing 8 are continuously cooled.
The secondary air 10 is compressed air from the compressor, and is supplied in a turbulent state in the space 11.

そして二次空気10を空間11に供給することにより、バーナノズル3外周をも冷却する。   Then, by supplying the secondary air 10 to the space 11, the outer periphery of the burner nozzle 3 is also cooled.

本発明のバーナの要部縦断面図。The principal part longitudinal cross-sectional view of the burner of this invention. 同バーナの一部破断要部分解図。The partially broken principal part exploded view of the burner. 比較のためのバーナの縦断面図。The longitudinal cross-sectional view of the burner for a comparison.

符号の説明Explanation of symbols

1 一次空気
2 燃料
3 バーナノズル
4 外ケーシング
5 フランジ部
6 中心孔
DESCRIPTION OF SYMBOLS 1 Primary air 2 Fuel 3 Burner nozzle 4 Outer casing 5 Flange part 6 Center hole

7 環状小隙
8 内ケーシング
9 二次空気供給管
9a 開口
10 二次空気
11 空間
12 バーナ保炎管
14 一次空気供給管
7 Annular gap 8 Inner casing 9 Secondary air supply pipe
9a opening
10 Secondary air
11 space
12 Burner flame holding tube
14 Primary air supply pipe

15 燃料供給管
16 断熱材
17 ケーシング
18 外筒
19 内筒
20 釣鐘体
24 保温材
25 火炎
26 円筒金具
27 環状止め金具
28 燃焼ガス
15 Fuel supply pipe
16 Insulation
17 Casing
18 outer cylinder
19 Inner cylinder
20 bell
24 Thermal insulation
25 flame
26 Cylindrical bracket
27 Ring clamp
28 Combustion gas

Claims (1)

一次空気(1) と燃料(2) とを混合して噴出するバーナノズル(3) と、
そのバーナノズル(3) の外周を被嵌して外部に露出され、その端部がバーナノズル(3) の噴射方向の下流側に且つバーナノズル(3) 先端より前方に突出して漏斗状に拡開する金属製の外ケーシング(4) と、
その外ケーシング(4) の端部と前記バーナノズル(3) の先端の間を閉塞するように、その外ケーシング(4) の端部からバーナノズル(3) の中心側に延在されたフランジ部(5) および、そのフランジ部(5) の内縁から前記外ケーシング(4) の内面に対向して鍋底状に凹陥し、その中心に設けた中心孔(6) が前記バーナノズル(3) の先端外周に近接し、その先端外周との間に環状小隙(7) が形成された金属製の内ケーシング(8) と、
先端が前記外ケーシング(4) に連通すると共に、その開口(9a)が前記内ケーシング(8) の鍋底状の外周面に対向する二次空気供給管(9) と、を具備し、
その二次空気供給管(9)から流入される二次空気(10)が外ケーシング(4) と内ケーシング(8) との間の環状の空間(11)に供給され、それが外ケーシング(4) の内面を流通してその外ケーシング(4) を冷却しつつ、前記空間(11)から前記環状小隙(7) を通過するように構成したバーナ。
A burner nozzle (3) for mixing and ejecting primary air (1) and fuel (2);
A metal that is fitted to the outer periphery of the burner nozzle (3) and exposed to the outside, and whose end projects downstream from the burner nozzle (3) in the injection direction and forward from the tip of the burner nozzle (3) and expands in a funnel shape An outer casing (4) made of
A flange portion extending from the end of the outer casing (4) to the center side of the burner nozzle (3) so as to block between the end of the outer casing (4) and the tip of the burner nozzle (3). 5) and a concave portion in the shape of a pan bottom facing the inner surface of the outer casing (4) from the inner edge of the flange portion (5), and a center hole (6) provided at the center is an outer periphery of the tip of the burner nozzle (3) A metal inner casing (8) in which an annular gap (7) is formed between the outer periphery and the outer periphery of the tip,
A secondary air supply pipe (9) whose front end communicates with the outer casing (4) and whose opening (9a) opposes the pan-bottomed outer peripheral surface of the inner casing (8),
Secondary air (10) flowing in from the secondary air supply pipe (9) is supplied to the annular space (11) between the outer casing (4) and the inner casing (8), which is A burner configured to pass through the annular gap (7) from the space (11) while flowing through the inner surface of 4) and cooling the outer casing (4).
JP2006192940A 2006-07-13 2006-07-13 Burner Expired - Fee Related JP4718385B2 (en)

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JP4718385B2 JP4718385B2 (en) 2011-07-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101024076B1 (en) * 2009-02-19 2011-03-22 남문희 apparatus of gas burner
KR101079748B1 (en) 2009-09-16 2011-11-03 남문희 apparatus of gas burner
JP2016044886A (en) * 2014-08-22 2016-04-04 大阪瓦斯株式会社 Bunsen burner device and bunsen burner main body

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956536A (en) * 1972-09-29 1974-06-01
JPS51124933A (en) * 1975-04-24 1976-10-30 Ricoh Co Ltd Method for increasing sensitivity of electrophotographic material
JPS6330724A (en) * 1986-07-24 1988-02-09 Anritsu Corp Combination weighing apparatus
JPH05149518A (en) * 1991-11-29 1993-06-15 Toshiba Corp Gas burner of gas burning equipment
JP2002206710A (en) * 2000-12-28 2002-07-26 Toyota Central Res & Dev Lab Inc Premixing combustor
JP2007163037A (en) * 2005-12-14 2007-06-28 T Rad Co Ltd Mounting structure of burner flame stabilizing pipe and evaporator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956536A (en) * 1972-09-29 1974-06-01
JPS51124933A (en) * 1975-04-24 1976-10-30 Ricoh Co Ltd Method for increasing sensitivity of electrophotographic material
JPS6330724A (en) * 1986-07-24 1988-02-09 Anritsu Corp Combination weighing apparatus
JPH05149518A (en) * 1991-11-29 1993-06-15 Toshiba Corp Gas burner of gas burning equipment
JP2002206710A (en) * 2000-12-28 2002-07-26 Toyota Central Res & Dev Lab Inc Premixing combustor
JP2007163037A (en) * 2005-12-14 2007-06-28 T Rad Co Ltd Mounting structure of burner flame stabilizing pipe and evaporator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101024076B1 (en) * 2009-02-19 2011-03-22 남문희 apparatus of gas burner
KR101079748B1 (en) 2009-09-16 2011-11-03 남문희 apparatus of gas burner
JP2016044886A (en) * 2014-08-22 2016-04-04 大阪瓦斯株式会社 Bunsen burner device and bunsen burner main body

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Publication number Publication date
JP4718385B2 (en) 2011-07-06

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