JP6430859B2 - Flat burner - Google Patents

Flat burner Download PDF

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JP6430859B2
JP6430859B2 JP2015041905A JP2015041905A JP6430859B2 JP 6430859 B2 JP6430859 B2 JP 6430859B2 JP 2015041905 A JP2015041905 A JP 2015041905A JP 2015041905 A JP2015041905 A JP 2015041905A JP 6430859 B2 JP6430859 B2 JP 6430859B2
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burner
side plate
notch
flat
flame
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JP2016161245A (en
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貴大 小野
貴大 小野
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Rinnai Corp
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Rinnai Corp
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Priority to JP2015041905A priority Critical patent/JP6430859B2/en
Priority to TW104138736A priority patent/TWI588415B/en
Priority to CN201610079772.8A priority patent/CN105937761B/en
Publication of JP2016161245A publication Critical patent/JP2016161245A/en
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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
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/08—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with axial outlets at the burner head
    • 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

Description

本発明は、上端に混合気を噴出する炎口部を有する前後方向に長手の偏平バーナに関する。   The present invention relates to a flat burner that is long in the front-rear direction and has a flame opening portion that ejects air-fuel mixture at the upper end.

この種の偏平バーナでは、炎口部の外側の側板部の上端と点火電極との間でダイレクトにスパークさせて、炎口部から噴出する混合気に点火するようにしている。そして、従来は、側板部の上端の所定箇所に、スパークを飛ばすターゲットとなる上方に突出する突起を形成している(例えば、特許文献１、２参照)。   In this type of flat burner, spark is directly sparked between the upper end of the side plate portion outside the flame opening and the ignition electrode to ignite the air-fuel mixture ejected from the flame opening. Conventionally, a protrusion projecting upward is formed at a predetermined location on the upper end of the side plate portion, which serves as a target for flying a spark (see, for example, Patent Documents 1 and 2).

然し、このような突起は、バーナ燃焼時に火炎に晒されるため、突起の先端が熱だれで丸くなってしまうことがある。そして、突起の先端がこのように変形すると、スパークが突起の先端に飛び難くなって、点火性能が悪化してしまう。   However, since such protrusions are exposed to a flame during burner combustion, the tips of the protrusions may become round due to heat. When the tip of the projection is deformed in this way, the spark is difficult to fly to the tip of the projection, and the ignition performance is deteriorated.

特開２０１１−１２７８６３号公報(図４)Japanese Patent Laying-Open No. 2011-127863 (FIG. 4) 特開２０１３−１２２３３６号公報(図２、図６、図７)JP2013-122336A (FIGS. 2, 6, and 7)

本発明は、以上の点に鑑み、点火性能が悪化することを可及的に防止できるようにした偏平バーナを提供することをその課題としている。   This invention makes it the subject to provide the flat burner which made it possible to prevent that ignition performance deteriorates as much as possible in view of the above point.

上記課題を解決するために、本発明は、上端に混合気を噴出する炎口部を有する前後方向に長手の偏平バーナであって、炎口部の外側の前後方向に沿う側板部の上端の所定箇所と点火電極との間でスパークさせて、炎口部から噴出する混合気に点火するものにおいて、側板部の上端の前記所定箇所に下方に窪む切欠きを形成することを特徴とする。 In order to solve the above-mentioned problems, the present invention is a flat burner that is long in the front-rear direction and has a flame mouth part that jets an air-fuel mixture at the upper end, and the upper end of the side plate part along the front-rear direction outside the flame mouth part. What sparks between a predetermined location and an ignition electrode, and ignites the air-fuel mixture spouted from a flame mouth part, is characterized by forming a notch recessed downward in the predetermined location at the upper end of the side plate .

本発明によれば、切欠きの両端の下方に窪み始めるエッジ部がターゲットとなって、ここにスパークが飛ぶ。そして、このエッジ部は、従来例の如きターゲットとなる突起先端と異なり、熱で変形し難く、点火性能が悪化することを可及的に防止できる。   According to the present invention, the edge portion that starts to dent below both ends of the notch is the target, and the sparks fly here. The edge portion is unlikely to be deformed by heat unlike the projection tip as a target as in the conventional example, and the ignition performance can be prevented from being deteriorated as much as possible.

ところで、偏平バーナが、横方向に対峙する一対の側板を有するバーナ本体と、バーナ本体を横方向両側から覆う一対の側板を有するバーナキャップとを備えるものであって、炎口部の外側の側板部がバーナキャップの横方向一側の側板で構成され、この側板の上端の所定箇所に切欠きを形成する場合は、バーナキャップの横方向他側の側板の上端に、前記切欠きと点対称になるように切欠きを形成することが望ましい。これによれば、バーナキャップの向きを逆にして、本来横方向一側に配置すべき側板を横方向他側に配置させた状態でバーナキャップをバーナ本体に組付けても、横方向一側に配置された側板の上端の切欠きがターゲットとなるべき所定箇所に位置する。従って、バーナキャップをその向きを気にせずに組付けられるようになり、組付け性が向上する。   By the way, the flat burner includes a burner body having a pair of side plates facing each other in the lateral direction, and a burner cap having a pair of side plates covering the burner body from both sides in the lateral direction, and a side plate outside the flame opening. When the part is composed of a side plate on one side of the burner cap and a notch is formed at a predetermined position on the upper end of the side plate, the upper end of the side plate on the other side of the burner cap is point-symmetric with the notch. It is desirable to form a notch so that According to this, even if the burner cap is assembled to the burner body in a state where the side plate that should originally be arranged on one side in the horizontal direction is arranged on the other side in the horizontal direction with the direction of the burner cap reversed, The notch at the upper end of the side plate arranged at the position is located at a predetermined position to be the target. Therefore, the burner cap can be assembled without worrying about its orientation, and the assemblability is improved.

本発明の実施形態の偏平バーナを具備する燃焼装置の斜視図。The perspective view of the combustion apparatus which comprises the flat burner of embodiment of this invention. 図１の燃焼装置の切断側面図。FIG. 2 is a cut side view of the combustion apparatus of FIG. 1. 実施形態の偏平バーナの斜視図。The perspective view of the flat burner of embodiment. 図３のＩＶ−ＩＶ線で切断した偏平バーナの断面図。Sectional drawing of the flat burner cut | disconnected by the IV-IV line of FIG.

図１、図２を参照して、１は、給湯用熱源機から成る燃焼装置を構成する燃焼筐を示している。燃焼筐１の上面は開放されており、燃焼筐１の上に被加熱物として図示省略した給湯用熱交換器が設置される。燃焼筐１内には、燃焼筐１内の空間を燃焼室２とその下側の給気室３とに仕切る仕切り板４が設けられている。燃焼室２内には、前後方向に長手の偏平バーナ５が横方向に隙間を存して並べて複数並設されている。   Referring to FIGS. 1 and 2, reference numeral 1 denotes a combustion casing that constitutes a combustion apparatus that includes a hot water supply heat source unit. The upper surface of the combustion casing 1 is open, and a hot water supply heat exchanger (not shown) is installed on the combustion casing 1 as an object to be heated. In the combustion housing 1, a partition plate 4 that partitions the space in the combustion housing 1 into a combustion chamber 2 and an air supply chamber 3 below the combustion chamber 2 is provided. In the combustion chamber 2, a plurality of flat burners 5 elongated in the front-rear direction are arranged side by side with a gap in the lateral direction.

給気室３の底面には図外の燃焼ファンが接続されており、燃焼ファンから給気室３に空気が供給される。仕切り板４には、多数の分布孔４１が形成されており、給気室３に供給された空気がこれら分布孔４１を介して燃焼室２に二次空気として供給されるようにしている。   A combustion fan (not shown) is connected to the bottom surface of the air supply chamber 3, and air is supplied from the combustion fan to the air supply chamber 3. A number of distribution holes 41 are formed in the partition plate 4 so that air supplied to the air supply chamber 3 is supplied as secondary air to the combustion chamber 2 through these distribution holes 41.

また、仕切り板４の前端には、上方に屈曲する起立板部４２と、起立板部４２の上端から前方に屈曲して燃焼筐１の前面の外壁板１１に達する上板部４３とが設けられている。そして、給気室３の前端部に、起立板部４２の前側で上板部４３に達するように立上る一次空気室３１が設けられる。起立板部４２には、各偏平バーナ５の後述する混合管部５４の上流端の流入口５４ａに臨む各開口４４が形成され、一次空気室３１の前面は、ガスマニホールド６で閉塞される。ガスマニホールド６には、各開口４４に対向する各ノズル６１が設けられており、各開口４４、即ち、各偏平バーナ５の混合管部５４に各ノズル６１から燃料ガスが供給されると共に一次空気室３１から一次空気が供給される。また、燃焼筐１の前面には、フレームロッド７と点火電極８とが配置されている。   Further, an upright plate portion 42 bent upward and an upper plate portion 43 bent forward from the upper end of the upright plate portion 42 to reach the outer wall plate 11 on the front surface of the combustion housing 1 are provided at the front end of the partition plate 4. It has been. A primary air chamber 31 that rises so as to reach the upper plate portion 43 on the front side of the upright plate portion 42 is provided at the front end portion of the air supply chamber 3. Each upright plate portion 42 is formed with each opening 44 facing an inlet 54 a at the upstream end of a mixing tube portion 54 described later of each flat burner 5, and the front surface of the primary air chamber 31 is closed by the gas manifold 6. The gas manifold 6 is provided with nozzles 61 facing the openings 44, and fuel gas is supplied from the nozzles 61 to the openings 44, that is, the mixing pipe portions 54 of the flat burners 5, and primary air is supplied. Primary air is supplied from the chamber 31. A flame rod 7 and an ignition electrode 8 are disposed on the front surface of the combustion housing 1.

図３、図４を参照して、偏平バーナ５は、横方向に対峙する一対の側板５１ａ，５１ａを有するバーナ本体５１と、バーナ本体５１を横方向両側の外側から覆う一対の側板５２ａ，５２ａを有するバーナキャップ５２とを備えている。また、偏平バーナ５は、上端に、混合気を噴出する炎口部５３を有している。この炎口部５３には、バーナ本体５１の両側板５１ａ，５１ａの上端を繋ぐ上板５１ｂに前後方向の間隔を存して複数形成した主炎口５３ａと、バーナ本体５１の各側板５１ａとバーナキャップ５２の各側板５２ａとの間に画成される袖火炎口５３ｂとが設けられている。   3 and 4, the flat burner 5 includes a burner body 51 having a pair of side plates 51a and 51a facing each other in the lateral direction, and a pair of side plates 52a and 52a covering the burner body 51 from the outside on both sides in the lateral direction. And a burner cap 52 having Further, the flat burner 5 has a flame opening 53 for ejecting the air-fuel mixture at the upper end. The flame port 53 includes a plurality of main flame ports 53a formed on the upper plate 51b connecting the upper ends of both side plates 51a, 51a of the burner body 51 with a space in the front-rear direction, and each side plate 51a of the burner body 51. A sleeve flame port 53b defined between each side plate 52a of the burner cap 52 is provided.

また、バーナ本体５１には、前端の流入口５４ａから後方にのびる下部の混合管部５４と、混合管部５４の後端部から前後方向に広がりながら上方にのびる主混合気通路５５とが設けられ、流入口５４ａから流入する燃料ガスと一次空気との混合気が混合管部５４と主混合気通路５５とを介して主炎口５３ａに導かれるようにしている。尚、バーナ本体５１の両側板５１ａ，５１ａと上板５１ｂは、一枚の板を折り曲げることで形成されている。   The burner body 51 is provided with a lower mixing pipe portion 54 extending rearward from the front end inlet 54a, and a main mixture passage 55 extending upward while extending in the front-rear direction from the rear end portion of the mixing pipe portion 54. Thus, the air-fuel mixture of the fuel gas and the primary air flowing in from the inflow port 54a is guided to the main flame port 53a via the mixing pipe portion 54 and the main air-fuel mixture passage 55. The both side plates 51a, 51a and the upper plate 51b of the burner body 51 are formed by bending a single plate.

バーナ本体５１の各側板５１ａとバーナキャップ５２の各側板５２ａとの間には、袖火炎口５３ｂに連なる袖火混合気通路５６が設けられている。また、バーナ本体５１の各側板５１ａには、バーナキャップ５２の各側板５２ａの下部が重ね合わされる部分より上方に位置させて、主混合気通路５５と袖火混合気通路５６とを連通する通気孔５６ａが前後方向の間隔を存して複数形成されている。そして、主混合気通路５５からこれら通気孔５６ａを介して分流される混合気が袖火混合気通路５６を介して袖火炎口５３ｂに供給され、袖火炎口５３ｂ上に形成される袖火により主炎口５３ａ上に形成される主炎が保炎されるようにしている。尚、バーナキャップ５２は、両側板５２ａ，５２ａの上端を前後複数箇所で繋ぐブリッジ部５２ｂを有している。   Between each side plate 51 a of the burner body 51 and each side plate 52 a of the burner cap 52, a sleeve fire gas mixture passage 56 that is continuous with the sleeve flame port 53 b is provided. Further, each side plate 51a of the burner main body 51 is positioned above a portion where the lower portion of each side plate 52a of the burner cap 52 is overlapped, and the main mixture passage 55 and the sleeve flame mixture passage 56 communicate with each other. A plurality of pores 56a are formed at intervals in the front-rear direction. Then, the air-fuel mixture diverted from the main air-fuel mixture passage 55 via these vent holes 56a is supplied to the sleeve flame outlet 53b via the sleeve-fired air-fuel mixture passage 56, and by the sleeve fire formed on the sleeve flame outlet 53b. The main flame formed on the main flame mouth 53a is held. The burner cap 52 has a bridge portion 52b that connects the upper ends of both side plates 52a, 52a at a plurality of front and rear locations.

ところで、点火時には、点火電極８の直下に配置された偏平バーナ５の炎口部５３の外側の前後方向に沿う側板部であるバーナキャップ５２の図３で左側の側板５２ａの上端の前部所定箇所と点火電極８との間でスパークさせて、炎口部５３から噴出する混合気に点火する。そして、点火を確実にするには、左側の側板５２ａの上端の前部所定箇所にスパークが飛ぶターゲットを設けることが望まれるが、ターゲットを上方に突出する突起で構成したのでは、以下の不具合を生ずる。即ち、突起は、バーナ燃焼時に火炎に晒されるため、突起の先端がだれて丸くなってしまうことがある。そして、突起の先端がこのように変形すると、スパークが突起の先端に飛び難くなって、点火性能が悪化してしまう。 By the way, at the time of ignition, a predetermined front portion of the upper end of the left side plate 52a in FIG. 3 of the burner cap 52 which is a side plate portion along the front-rear direction outside the flame port portion 53 of the flat burner 5 arranged immediately below the ignition electrode 8 is shown. Spark is generated between the point and the ignition electrode 8 to ignite the air-fuel mixture ejected from the flame opening 53. And in order to ensure ignition, it is desirable to provide a target where the sparks fly at a predetermined position in the front of the upper side of the left side plate 52a. Is produced. That is, since the protrusion is exposed to the flame during burner combustion, the tip of the protrusion may be bent and rounded. When the tip of the projection is deformed in this way, the spark is difficult to fly to the tip of the projection, and the ignition performance is deteriorated.

そこで、本実施形態では、バーナキャップ５２の左側の側板５２ａの上端の前部所定箇所に下方に窪む半円状の♯１の切欠き５７を形成し、この切欠き５７の両端の下方に窪み始める角張った形状のエッジ部５７ａがターゲットになるようにしている。ここで、エッジ部５７ａは、上記突起の先端と異なり、熱で変形し難く、点火性能が悪化することを可及的に防止できる。   Therefore, in the present embodiment, a semicircular # 1 cutout 57 that is recessed downward is formed at a predetermined position in the front of the upper end of the left side plate 52a of the burner cap 52, and below both ends of the cutout 57. The edge portion 57a having an angular shape that starts to be depressed is set as a target. Here, unlike the tip of the projection, the edge portion 57a is not easily deformed by heat, and can prevent the ignition performance from being deteriorated as much as possible.

また、本実施形態では、バーナキャップ５２の右側の側板５２ａの上端後部に、上記♯１の切欠き５７と点対称になるように♯２の切欠き５７を形成している。これによれば、バーナキャップ５２の向きを逆にして、本来左側に配置すべき側板５２ａを右側に配置させた状態でバーナキャップ５２をバーナ本体５１に組付けても、左側に配置された側板５２ａの上端の♯２の切欠き５７がターゲットとなるべき所定箇所に位置する。従って、バーナキャップ５２をその向きを気にせずに組付けられるようになり、組付け性が向上する。   In the present embodiment, the notch 57 of # 2 is formed at the rear end of the right side plate 52a of the burner cap 52 so as to be point-symmetric with the notch 57 of # 1. According to this, even if the burner cap 52 is assembled to the burner body 51 with the direction of the burner cap 52 reversed and the side plate 52a that should originally be arranged on the left side is arranged on the right side, the side plate arranged on the left side A notch 57 of # 2 at the upper end of 52a is located at a predetermined position to be a target. Therefore, the burner cap 52 can be assembled without worrying about its orientation, and the assemblability is improved.

尚、本実施形態では、点火電極８を偏平バーナ５の右寄りに配置する機種もあることから、バーナキャップ５２の右側の側板５２ａの上端前部に♯３の切欠き５７を形成すると共に、バーナキャップ５２の左側の側板５２ａの上端後部に、♯３の切欠き５７と点対称になるように♯４の切欠き５７を形成している。また、上記♯１〜♯４の切欠き５７は、どの偏平バーナ５が点火電極８の直下に配置されてもよいように、全ての偏平バーナ５に形成されている。   In this embodiment, since there is a model in which the ignition electrode 8 is arranged on the right side of the flat burner 5, a # 3 notch 57 is formed in the front upper end of the right side plate 52 a of the burner cap 52, and the burner A # 4 notch 57 is formed on the rear side of the upper end of the left side plate 52a of the cap 52 so as to be point-symmetric with the # 3 notch 57. Further, the cutouts 57 of # 1 to # 4 are formed in all the flat burners 5 so that any flat burner 5 may be disposed immediately below the ignition electrode 8.

以上、本発明の実施形態について図面を参照して説明したが、本発明はこれに限定されない。例えば、偏平バーナ５をバーナキャップ５２を有しないものとすることも可能である。この場合は、炎口部の外側の前後方向に沿う側板部となるバーナ本体の側板の上端所定箇所に切欠きを形成する。また、上記実施形態では、切欠き５７を半円状に形成しているが、切欠き５７の形状は、少なくとも一端に角張ったエッジ部を有する限りＶ字状等の半円状以外のものであってもよい。但し、切欠き５７を打抜き成形するポンチの耐久性を考慮すると、切欠き５７の形状は、ポンチに欠け易い部分を生じない半円状であることが望ましい。 As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, the flat burner 5 may not have the burner cap 52. In this case, a notch is formed at a predetermined position on the upper end of the side plate of the burner main body that becomes the side plate portion along the front-rear direction outside the flame opening portion. Moreover, in the said embodiment, although the notch 57 is formed in semicircle shape, the shape of the notch 57 is other than semicircle shapes, such as V shape, as long as it has the edge part which was squared at least at one end. There may be. However, considering the durability of the punch for punching and forming the notch 57, it is desirable that the shape of the notch 57 is a semicircular shape that does not cause a portion that is easily chipped into the punch.

５…偏平バーナ、５１…バーナ本体、５１ａ…バーナ本体の側板、５２…バーナキャップ、５２ａ…バーナキャップの側板(側板部)、５３…炎口部、５７…切欠き、８…点火電極。   DESCRIPTION OF SYMBOLS 5 ... Flat burner, 51 ... Burner main body, 51a ... Side plate of burner main body, 52 ... Burner cap, 52a ... Side plate (side plate part) of burner cap, 53 ... Flame port part, 57 ... Notch, 8 ... Ignition electrode.

Claims (2)

上端に混合気を噴出する炎口部を有する前後方向に長手の偏平バーナであって、炎口部の外側の前後方向に沿う側板部の上端の所定箇所と点火電極との間でスパークさせて、炎口部から噴出する混合気に点火するものにおいて、
側板部の上端の前記所定箇所に下方に窪む切欠きを形成することを特徴とする偏平バーナ。 A flat burner longitudinally extending in the front-rear direction having a flame mouth portion for injecting an air-fuel mixture at the upper end, and sparked between a predetermined location at the upper end of the side plate along the front-rear direction outside the flame mouth portion and the ignition electrode In what ignites the air-fuel mixture ejected from the flame port,
A flat burner characterized in that a notch recessed downward is formed in the predetermined portion of the upper end of the side plate portion. 請求項１記載の偏平バーナであって、横方向に対峙する一対の側板を有するバーナ本体と、バーナ本体を横方向両側から覆う一対の側板を有するバーナキャップとを備え、前記側板部は、バーナキャップの横方向一側の側板で構成され、この側板の上端の所定箇所に前記切欠きを形成するものにおいて、
バーナキャップの横方向他側の側板の上端に、前記切欠きと点対称になるように切欠きを形成することを特徴とする偏平バーナ。 2. The flat burner according to claim 1, comprising a burner body having a pair of side plates facing each other in the lateral direction and a burner cap having a pair of side plates covering the burner body from both sides in the lateral direction. It is composed of a side plate on one side in the lateral direction of the cap, and the notch is formed at a predetermined position on the upper end of this side plate.
A flat burner characterized in that a notch is formed at the upper end of the side plate on the other side of the burner cap so as to be point-symmetric with the notch.
JP2015041905A 2015-03-04 2015-03-04 Flat burner Active JP6430859B2 (en)

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JPS59186664U (en) * 1983-05-25 1984-12-11 三洋電機株式会社 Gas burner ignition system
JPH02117086A (en) * 1988-10-26 1990-05-01 Ryohei Kashiwabara Ignition plug and combustion by ignition plug
JP3138416B2 (en) * 1995-10-03 2001-02-26 パロマ工業株式会社 Flame for ignition of stove burner
US6746236B2 (en) * 2002-01-24 2004-06-08 Noritz Corporation Combustion apparatus
JP4113188B2 (en) * 2005-02-08 2008-07-09 リンナイ株式会社 Flat gas burner
CN201310888Y (en) * 2008-11-25 2009-09-16 赵秀君 Gas burner
CN201435528Y (en) * 2009-05-31 2010-03-31 席其红 Dish-shaped spark plug
JP5983022B2 (en) * 2012-05-21 2016-08-31 株式会社ノーリツ Combustion device and water heater

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