JPS62119321A - Burner - Google Patents

Burner

Info

Publication number
JPS62119321A
JPS62119321A JP25891785A JP25891785A JPS62119321A JP S62119321 A JPS62119321 A JP S62119321A JP 25891785 A JP25891785 A JP 25891785A JP 25891785 A JP25891785 A JP 25891785A JP S62119321 A JPS62119321 A JP S62119321A
Authority
JP
Japan
Prior art keywords
flame
burner
frame rod
burner body
combustion
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.)
Granted
Application number
JP25891785A
Other languages
Japanese (ja)
Other versions
JPH0438971B2 (en
Inventor
Tadashi Yamazaki
正 山崎
Takashi Nishikawa
隆 西川
Hiroo Oshima
大島 弘夫
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP25891785A priority Critical patent/JPS62119321A/en
Publication of JPS62119321A publication Critical patent/JPS62119321A/en
Publication of JPH0438971B2 publication Critical patent/JPH0438971B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Spray-Type Burners (AREA)

Abstract

PURPOSE:To stabilize the flame current detection of a burner by providing a number of burner ports on the periphery wall of the burner body and forming auxiliary burner ports at the lower parts of the burner ports placed in opposition to a frame rod, in the burner of a space heater or the like. CONSTITUTION:A plurality or auxiliary burner ports 26 are provided at the lower parts of burner ports 17 that are placed at parts provided with a frame rod 25. Thus, the quantity of flame in the vicinity of the frame rod 25 increases, and a flame current of the frame rod increases. Accordingly, even when the fitting position of the frame rod 25 is slightly irregular, it is possible to detect the stable flame current, and hence to widen the flame detection range of the frame rod 25.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は暖房器等に用いられる燃焼器に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a combustor used in a heater or the like.

従来の技術 一般にこの種の燃焼器は第3図に示すようにノズル1よ
り供給した液体燃料を気化筒2内で気化するとともに空
気供給管3から供給された燃焼用の空気と混合し、この
空気と燃料との予混合ガスを気化筒2上部のバーナボデ
ィ4周壁に設けた多数の炎孔5よシ噴出させ燃焼させて
いた。そして上記バーナボディ4の外周に設けたフレー
ムロッド6によって炎孔5に形成される炎の火炎電流を
検出し、燃焼制御していた。
BACKGROUND ART In general, this type of combustor vaporizes liquid fuel supplied from a nozzle 1 in a vaporization tube 2 and mixes it with combustion air supplied from an air supply pipe 3, as shown in FIG. A premixed gas of air and fuel was ejected through a number of flame holes 5 provided on the circumferential wall of the burner body 4 above the carburetor cylinder 2 and combusted. The flame current of the flame formed in the flame hole 5 was detected by a flame rod 6 provided on the outer periphery of the burner body 4, and combustion was controlled.

発明が解決しようとする問題点 しかしながら上記従来の構成ではフレームロッド6がそ
の取付公差の関係から炎孔と炎孔との間に位置すること
があシ、その際火炎との接触面積が少なくなって火炎電
流の検出が低下することがあった。このフレームロッド
検出電流が低いと正しい燃焼をしているにもかかわらず
異常燃焼をしていると制御器が判断し燃焼を停止させる
。例えば空燃比が正しい範囲にもかかわらず燃焼を停止
する。すなわちフレームロッドの火炎検出範囲が狭くな
シ、見掛上燃焼巾が狭くなってくる。
Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, the frame rod 6 is often located between the flame holes due to its mounting tolerance, and in this case, the area of contact with the flame is reduced. Detection of flame current sometimes deteriorated. If this flame rod detection current is low, the controller determines that abnormal combustion is occurring despite correct combustion, and stops combustion. For example, combustion may be stopped even though the air-fuel ratio is within the correct range. In other words, the flame detection range of the flame rod becomes narrower, and the apparent combustion width becomes narrower.

また、酸欠状態の時、18%程度の酸素濃度で燃焼を停
止させたいにもかかわらず、例えば、19.5%時点で
燃焼を停止するような早切れ状態を生じる。
Further, in an oxygen-deficient state, a premature cut-off state occurs in which combustion is stopped at, for example, 19.5%, even though it is desired to stop combustion at an oxygen concentration of about 18%.

このような問題は炎孔の面積を大きくしてフレームロッ
ドが取付公差範囲内で多少移動しても必ず炎孔と対向す
るようにすれば解決できるが、この場合は燃焼音が高く
なシ器具総合騒音レベルを高める等の問題が生じてくる
。また炎孔に配設した金網の温度が上昇してこれが赤熱
劣化し、耐久性が低下する問題も生じてくる。
This problem can be solved by increasing the area of the flame hole so that the flame rod always faces the flame hole even if it moves a little within the installation tolerance range, but in this case, the flame rod will not produce high combustion noise. Problems such as increasing the overall noise level arise. Further, the temperature of the wire mesh disposed in the flame hole increases, causing red heat and deterioration, resulting in a problem of reduced durability.

本発明はこのような点を考慮してなしたもので、フレー
ムロッドの取付状態が多少変化しても安定した火炎検出
電流が得られるようにすることを目的としたものである
The present invention has been made in consideration of these points, and an object of the present invention is to enable a stable flame detection current to be obtained even if the mounting condition of the frame rod changes somewhat.

問題点を解決するための手段 本発明は上記目的を達成するためバーナボディの周壁に
多数の炎孔を設け、この炎孔のうちフレームロッドに対
向する炎孔の下部に複数個の***からなる補助炎孔を設
けた構成としである。
Means for Solving the Problems In order to achieve the above object, the present invention provides a large number of flame holes in the peripheral wall of the burner body, and includes a plurality of small holes in the lower part of the flame hole facing the flame rod. It has a configuration with an auxiliary flame hole.

作  用 本発明は上記した構成によシ、フレームロッドの近傍に
形成される火炎は炎孔からの炎に補助炎孔からの炎が加
わって大きなものとな)、火炎検出電流が高まるととも
に、フレームロッドの取付位置が多少変化しても火炎検
出電流のバラツキは少ないものとなる。
According to the above-described structure, the flame formed in the vicinity of the flame rod becomes large due to the addition of the flame from the auxiliary flame hole to the flame from the flame hole), and as the flame detection current increases, Even if the mounting position of the flame rod changes somewhat, the flame detection current will have little variation.

実施例 以下本発明の一実施例を第1図、第2図を用いて説明す
ると、11は有底筒状の気化兼混合筒で、その周壁一部
の偏心位置に燃料供給用のノズル12と燃焼用空気供給
用の空気供給管13が臨ませである。14は上記気化兼
混合筒11に埋設したヒータ、15は同気化兼混合筒1
1の上部開口に覆着したバーナボディで、気化兼混合筒
11内に突出する狭隘部16を底部に有する。17は上
記バーナボディ15の周壁に形成した多数の縦長の炎孔
で、その炎孔の一部に対向させてフレームロッド25が
設けてあシ、図面からも明らかなようにフレームロッド
25に対向する炎孔17の下部に複数の***からなる補
助炎口26が設けである。またこの炎孔17は傾斜状に
設けて隣の炎孔に形成される炎が互いに緩衝し合うよう
に配慮しである。18は上記バーナボディ15の周壁内
外に装着した金網等の多孔筒で、各炎孔間をスポット溶
接19してバーナボディ15に固着しである。
Embodiment Below, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. Reference numeral 11 denotes a bottomed cylindrical vaporizing/mixing cylinder, and a fuel supply nozzle 12 is installed at an eccentric position on a part of its peripheral wall. and an air supply pipe 13 for supplying combustion air. 14 is a heater embedded in the vaporization/mixing cylinder 11, and 15 is the vaporization/mixing cylinder 1.
The burner body covers the upper opening of the vaporizing/mixing cylinder 1 and has a narrow part 16 at the bottom that projects into the vaporizing/mixing cylinder 11. Reference numeral 17 denotes a large number of vertically elongated flame holes formed in the peripheral wall of the burner body 15, and a frame rod 25 is provided opposite a part of the flame hole. An auxiliary flame port 26 consisting of a plurality of small holes is provided at the bottom of the flame hole 17. Further, the flame holes 17 are provided in an inclined manner so that flames formed in adjacent flame holes may buffer each other. Reference numeral 18 denotes a porous tube such as a wire mesh attached to the inside and outside of the peripheral wall of the burner body 15, and is fixed to the burner body 15 by spot welding 19 between each flame hole.

20は上記バーナボディ15内に設けた均圧板、21は
同バーナボディ15の上部開口に覆設した二重バーナキ
ャップ、22は二重バーナキャップ21を固定するだめ
のナツト、23は炎孔17の一つに対向させて設けた点
火電極、24は気化兼混合筒11を囲むバーナケースで
ある。なお上記バーナボディ15の外周側壁に装備した
多孔筒18は、その下端を気化筒11のフランジ部Ha
で、又上端はバーナキャップ21の折曲縁21&で覆い
、バーナボディ15に密着して支持されるようになって
いる。
20 is a pressure equalizing plate provided inside the burner body 15, 21 is a double burner cap covered over the upper opening of the burner body 15, 22 is a nut for fixing the double burner cap 21, and 23 is a flame hole 17. 24 is a burner case surrounding the vaporizing/mixing cylinder 11. Note that the porous tube 18 installed on the outer peripheral side wall of the burner body 15 has its lower end connected to the flange portion Ha of the vaporizing tube 11.
The upper end is covered with the bent edge 21 & of the burner cap 21 so that it is closely supported by the burner body 15.

上記構成において、ポンプ等によって気化兼混合筒11
内に噴出された燃料は、シーズヒータ14によって高温
に加熱されている気化兼混合筒11内で気化し、送風機
等により気化兼混合筒11内に送られてくる燃焼用空気
と予混合する。
In the above configuration, the vaporizing/mixing cylinder 11 is
The fuel injected inside is vaporized in the vaporization/mixing cylinder 11 which is heated to a high temperature by the sheathed heater 14, and is premixed with combustion air sent into the vaporization/mixing cylinder 11 by a blower or the like.

この予混合気化ガスは、気化兼混合筒11内を旋回しな
がらバーナボディ15の狭隘部16及び均圧板20の小
孔20aを介してバーナボディ15内に噴流し外周壁の
炎孔よシ噴出する。そして適当な点火手段で点火してや
ると燃焼を開始し炎孔17周辺の多孔筒18に密着した
火炎を形成する。
This premixed vaporized gas swirls inside the vaporizing/mixing cylinder 11 and is jetted into the burner body 15 through the narrow part 16 of the burner body 15 and the small hole 20a of the pressure equalizing plate 20, and is ejected from the flame hole in the outer peripheral wall. do. When the flame is ignited by an appropriate ignition means, combustion starts and a flame is formed that closely adheres to the porous tube 18 around the flame hole 17.

ここで上記炎孔17のうちフレームロッド25を設けた
部分の炎孔下部には複数の補助炎口26が設けであるの
で、フレームロッド25付近の火炎量は多くなυ、フレ
ームロッド25の火炎電流が増大する。特に本実施例で
は炎孔17を傾斜させであるので隣接し合う炎孔同志の
炎が緩衝し、炎孔同志間の火炎量がその分増加するので
火炎電流はさらに増大する。したがってフレームロッド
25の取付位置が多少ばらついてもこれを吸収し安定し
た火炎電流を検出することが可能となる。
Here, since a plurality of auxiliary flame ports 26 are provided at the lower part of the flame hole in the part where the flame rod 25 is provided in the flame hole 17, the amount of flame near the flame rod 25 is large υ, and the flame of the flame rod 25 is Current increases. In particular, in this embodiment, since the flame holes 17 are inclined, the flames of adjacent flame holes are buffered, and the amount of flame between the flame holes increases accordingly, so that the flame current further increases. Therefore, even if there is some variation in the mounting position of the frame rod 25, it is possible to absorb this variation and detect a stable flame current.

すなわちフレームロッド25による火炎検出範囲は広く
なシ、その分燃焼巾を広げることができるようになる。
That is, the flame detection range by the flame rod 25 is wide, and the combustion range can be expanded accordingly.

まだ同様に酸欠状態で燃焼を行なった場合も火炎検出電
流が高まることによシ、従来よりも低い酸素濃度で燃焼
を停止させるように設定することが可能となる。そして
炎孔17そのものは大きくすることなく小さくして火炎
電流を増大しているので、金網15の赤熱は少なく、金
網の耐久性を向上させることができるとともに燃焼騒音
は逆に低減することができる。
Even if combustion is performed in the same oxygen-deficient state, the flame detection current increases, making it possible to set the combustion to stop at a lower oxygen concentration than before. Since the flame hole 17 itself is made smaller and increases the flame current without making it larger, the wire mesh 15 generates less red heat, improving the durability of the wire mesh and conversely reducing combustion noise. .

発明の効果 以上実施例の説明で明らかなように本発明によれば、耐
久性や騒音特性を損うことなくフレームロンドの火炎検
出電流を増大させることが可能となる。したがってフレ
ームロンドの取付位置が多少ズしても安定した火炎電流
を検出することができ、燃焼巾が大きく拡大するととも
に、酸欠による早切れ等の誤動作もなくなる等、高品質
の燃焼器を提供することができる。
Effects of the Invention As is clear from the description of the embodiments, according to the present invention, it is possible to increase the flame detection current of the flame rond without impairing durability or noise characteristics. Therefore, even if the installation position of the flame rond is slightly misaligned, a stable flame current can be detected, the combustion width is greatly expanded, and malfunctions such as premature burnout due to lack of oxygen are eliminated, providing a high-quality combustor. can do.

【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器の要部断面図
、第2図は同全体の断面図、第3図は従来例を示す断面
図である。 11・・・・・・混合部(気化兼混合筒)、IS・・・
・・バーナボディ、17・・・・・・炎孔、18・・・
・・・多孔筒。
FIG. 1 is a sectional view of a main part of a combustor according to an embodiment of the present invention, FIG. 2 is a sectional view of the entire combustor, and FIG. 3 is a sectional view of a conventional example. 11...Mixing section (vaporization and mixing cylinder), IS...
...Burna body, 17... Flame hole, 18...
...Porous tube.

Claims (2)

【特許請求の範囲】[Claims] (1)空気と燃料とを混合する混合部と、混合部からの
混合ガスをその外周壁に設けた複数の炎口で燃焼させる
バーナボディと、バーナボディの周壁外周に配設した多
孔筒とを備え、フレームロッドに対向する上記複数の炎
孔の下部に複数個の***からなる補助炎孔を設けた燃焼
器。
(1) A mixing section that mixes air and fuel, a burner body that burns the mixed gas from the mixing section through a plurality of flame ports provided on its outer peripheral wall, and a porous tube arranged on the outer periphery of the burner body. A combustor comprising: an auxiliary flame hole consisting of a plurality of small holes provided at a lower part of the plurality of flame holes facing the flame rod.
(2)炎孔は縦長に形成するとともに傾斜状に配列した
ことを特徴とする特許請求の範囲第1項記載の燃焼器。
(2) The combustor according to claim 1, wherein the flame holes are formed vertically and arranged in an inclined manner.
JP25891785A 1985-11-19 1985-11-19 Burner Granted JPS62119321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25891785A JPS62119321A (en) 1985-11-19 1985-11-19 Burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25891785A JPS62119321A (en) 1985-11-19 1985-11-19 Burner

Publications (2)

Publication Number Publication Date
JPS62119321A true JPS62119321A (en) 1987-05-30
JPH0438971B2 JPH0438971B2 (en) 1992-06-26

Family

ID=17326822

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25891785A Granted JPS62119321A (en) 1985-11-19 1985-11-19 Burner

Country Status (1)

Country Link
JP (1) JPS62119321A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755825U (en) * 1980-09-11 1982-04-01
JPS5965223U (en) * 1982-10-21 1984-05-01 リンナイ株式会社 gas appliances
JPS606962U (en) * 1983-06-21 1985-01-18 松下電器産業株式会社 combustion device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4374753A (en) * 1981-07-29 1983-02-22 Chemplex Company Polymerization catalyst and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755825U (en) * 1980-09-11 1982-04-01
JPS5965223U (en) * 1982-10-21 1984-05-01 リンナイ株式会社 gas appliances
JPS606962U (en) * 1983-06-21 1985-01-18 松下電器産業株式会社 combustion device

Also Published As

Publication number Publication date
JPH0438971B2 (en) 1992-06-26

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