JP3860568B2 - Parent and child burner - Google Patents

Parent and child burner Download PDF

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JP3860568B2
JP3860568B2 JP2003400241A JP2003400241A JP3860568B2 JP 3860568 B2 JP3860568 B2 JP 3860568B2 JP 2003400241 A JP2003400241 A JP 2003400241A JP 2003400241 A JP2003400241 A JP 2003400241A JP 3860568 B2 JP3860568 B2 JP 3860568B2
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parent
burner
flame hole
child
burner cap
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JP2005164058A (en
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裕康 佐藤
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Rinnai Corp
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Rinnai Corp
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Priority to JP2003400241A priority Critical patent/JP3860568B2/en
Priority to TW093121876A priority patent/TWI275735B/en
Priority to KR1020040061462A priority patent/KR100576036B1/en
Priority to CNB2004100564551A priority patent/CN100476295C/en
Publication of JP2005164058A publication Critical patent/JP2005164058A/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
    • F23D14/06—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 radial 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
    • F23D14/48—Nozzles
    • 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
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/02—Stoves or ranges for gaseous fuels with heat produced solely by flame
    • F24C3/027—Ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges

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

Description

本発明は、主としてガスコンロで使用する親子バーナに関する。   The present invention relates to a parent-child burner mainly used in a gas stove.

従来、この種の親子バーナとして、子バーナキャップと、子バーナキャップを囲う環状の親バーナキャップとを備え、子バーナキャップの周壁部に子バーナ炎孔を周方向に間隔を存して複数形成すると共に、親バーナキャップの外周側の周壁部に親バーナ炎孔を周方向に間隔を存して複数形成して成るものは知られている。そして、このような親子バーナでは、一般的に、子バーナ炎孔と親バーナ炎孔との一方に点火器で点火し、他方の炎孔に火移りさせるようにしている。   Conventionally, as this type of parent-child burner, a child burner cap and an annular parent burner cap that surrounds the child burner cap are provided, and a plurality of child burner flame holes are formed in the circumferential wall portion of the child burner cap at intervals in the circumferential direction. In addition, it is known that a plurality of parent burner flame holes are formed in the peripheral wall portion on the outer peripheral side of the parent burner cap at intervals in the circumferential direction. In such a parent-child burner, generally, one of the child burner flame hole and the parent burner flame hole is ignited by an igniter and transferred to the other flame hole.

そのため、親バーナキャップの上壁部に、親バーナ炎孔と子バーナ炎孔との間の火移りのための径方向にのびるスリット炎孔を開設している(例えば、特許文献１，２参照。)。このもので、スリット炎孔は、親バーナキャップの外周側からの切削により、外周側の周壁部を含めて親バーナキャップの外周部分を完全に分断するように形成されている。
実開平１−１４４６１４号公報(明細書第４頁、第１図) 特許第２５０６９５４号公報(第２頁右欄、第２図) Therefore, a slit flame hole extending in the radial direction for the fire transfer between the parent burner flame hole and the child burner flame hole is opened on the upper wall portion of the parent burner cap (see, for example, Patent Documents 1 and 2). .). In this case, the slit flame hole is formed so as to completely divide the outer peripheral portion of the parent burner cap including the outer peripheral wall portion by cutting from the outer peripheral side of the parent burner cap.
Japanese Utility Model Laid-Open No. 1-144614 (Specification, page 4, FIG. 1) Japanese Patent No. 2506954 (right column on page 2, Fig. 2)

上記従来例の如く、親バーナキャップの外周部分を完全に分断するようにスリット炎孔を形成すると、親バーナキャップの熱膨張によりスリット炎孔が径方向外方に向かって幅狭になるように狭窄され、スリット炎孔から噴出するガス量が減少して、親バーナ炎孔と子バーナ炎孔との間の火移りが良好に行われなくなることがある。特に、親バーナキャップがこれを載置するバーナヘッドよりも熱膨張率の大きな材料で形成され、親バーナキャップの熱膨張がバーナヘッドに対する内周側の嵌合部で規制されて、親バーナキャップ全体が均等に熱膨張できなくなる場合、スリット炎孔が親バーナキャップの熱膨張の逃げ部となって、スリット炎孔が狭窄され易くなり、火移り性が悪化する。   When the slit flame hole is formed so as to completely divide the outer peripheral portion of the parent burner cap as in the above conventional example, the slit flame hole becomes narrower radially outward due to the thermal expansion of the parent burner cap. It is constricted and the amount of gas ejected from the slit flame hole is reduced, and the fire transfer between the parent burner flame hole and the child burner flame hole may not be performed well. In particular, the parent burner cap is formed of a material having a larger thermal expansion coefficient than the burner head on which the parent burner cap is placed, and the thermal expansion of the parent burner cap is restricted by the inner peripheral side fitting portion with respect to the burner head, and the parent burner cap When the whole cannot thermally expand evenly, the slit flame hole becomes a escape portion of thermal expansion of the parent burner cap, and the slit flame hole is easily narrowed, and the fire transfer property is deteriorated.

本発明は、以上の点に鑑み、親バーナキャップの熱膨張によってスリット炎孔が狭窄されることを防止して、火移り性を良好に維持できるようにした親子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 provides a parent-child burner that prevents the slit flame hole from being constricted by the thermal expansion of the parent burner cap and can maintain good fire transfer properties. It is said.

上記課題を解決するために、本発明では、子バーナキャップと、子バーナキャップを囲う環状の親バーナキャップとを備え、子バーナキャップの周壁部に子バーナ炎孔を周方向に間隔を存して複数形成すると共に、親バーナキャップの外周側の周壁部に親バーナ炎孔を周方向に間隔を存して複数形成して成る親子バーナであって、親バーナキャップの上壁部に、親バーナ炎孔と子バーナ炎孔との間の火移りのための径方向にのびるスリット炎孔を開設するものにおいて、スリット炎孔を、親バーナキャップの外周側の周壁部の親バーナ炎孔間に位置する何れかの隔壁部の上部を通って親バーナキャップの外周縁に達するように形成し、この隔壁部がスリット炎孔の両側面を結ぶ肉部として残される。 In order to solve the above-mentioned problems, the present invention includes a child burner cap and an annular parent burner cap that surrounds the child burner cap, and the child burner flame holes are spaced apart in the circumferential direction on the peripheral wall portion of the child burner cap. And a plurality of parent burner flame holes are formed in the peripheral wall portion on the outer peripheral side of the parent burner cap at intervals in the circumferential direction. In the case of opening a slit flame hole extending in the radial direction for the fire transfer between the burner flame hole and the child burner flame hole, the slit flame hole is located between the parent burner flame holes on the outer peripheral side of the parent burner cap. It is formed so as to reach the outer peripheral edge of the parent burner cap through the upper part of any one of the partition walls located at, and this partition wall part is left as a meat part connecting both side surfaces of the slit flame hole.

上記の構成によれば、親バーナキャップの熱膨張によりスリット炎孔の幅を狭めようとする応力が作用すると、切り残された肉部に圧縮応力が発生する。そして、この圧縮応力が抵抗力として働いて、スリット炎孔の狭窄が抑制され、火移り性が良好に維持される。   According to said structure, when the stress which narrows the width | variety of a slit flame hole acts by the thermal expansion of a parent burner cap, compressive stress will generate | occur | produce in the meat part left uncut. And this compressive stress works as resistance, the constriction of a slit flame hole is suppressed, and a fire transfer property is maintained favorable.

ここで、火移り性を一層良好にするには、スリット炎孔を親バーナキャップの外周縁に達するように形成して、外周側周壁部に形成する親バーナ炎孔にスリット炎孔を近づけることが望まれる。この場合、親バーナキャップの何れかの親バーナ炎孔の形成位置を通るようにスリット炎孔を形成すると、親バーナ炎孔の上端との間の僅かな肉部しか切り残すことができず、強度不足でスリット炎孔の狭窄を十分に抑制できなくなる。   Here, in order to further improve the fire transfer property, the slit flame hole is formed so as to reach the outer peripheral edge of the parent burner cap, and the slit flame hole is brought close to the parent burner flame hole formed on the outer peripheral side peripheral wall portion. Is desired. In this case, when the slit flame hole is formed so as to pass through the formation position of any one of the parent burner caps of the parent burner cap, only a slight meat portion between the upper end of the parent burner flame hole can be left, Lack of strength makes it impossible to sufficiently suppress the narrowing of the slit flame hole.

これに対し、本発明では、スリット炎孔を、親バーナキャップの外周側の周壁部の親バーナ炎孔間に位置する何れかの隔壁部の上部を通って親バーナキャップの外周縁に達するように形成しているため、隔壁部を肉部として残すことができ、肉部の強度が確保されて、スリット炎孔の狭窄が効果的に抑制される。 On the other hand, in the present invention, the slit flame hole reaches the outer peripheral edge of the parent burner cap through the upper part of any partition wall portion positioned between the parent burner flame holes of the peripheral wall portion on the outer peripheral side of the parent burner cap. since forming, the partition wall portion can be left as a meat portion, the strength of the meat portion is ensured, the constriction of the slit fire hole is effectively suppressed.

ところで、このように隔壁部を切り残す場合、スリット炎孔に対するガス流入範囲の径方向最外端の位置は隔壁部の内周面の位置になる。ここで、親バーナキャップの外周縁に位置するスリット炎孔の外端にまで回りこむガス量を多くして火移り性を向上させるには、スリット炎孔に対するガス流入範囲の径方向最外端の位置と親バーナキャップの外周縁との間の距離をできるだけ短くすることが望まれる。この場合、隔壁部の内周面に、径方向外方に凹入する窪み部をスリット炎孔に達するように形成すれば、窪み部からスリット炎孔にガスが流入するため、スリット炎孔に対するガス流入範囲の径方向最外端の位置が親バーナキャップの外周縁に近づく。その結果、スリット炎孔の外端にまで回り込むガス量が増加し、火移り性が向上する。   By the way, when the partition wall is left to be cut in this way, the position of the radially outermost end of the gas inflow range with respect to the slit flame hole is the position of the inner peripheral surface of the partition wall. Here, in order to increase the amount of gas that circulates to the outer end of the slit flame hole located at the outer peripheral edge of the parent burner cap and improve the fire transfer property, the radially outermost end of the gas inflow range with respect to the slit flame hole It is desirable to make the distance between the position of and the outer peripheral edge of the parent burner cap as short as possible. In this case, if a hollow part recessed radially outward is formed on the inner peripheral surface of the partition wall so as to reach the slit flame hole, gas flows into the slit flame hole from the hollow part. The position of the radially outermost end of the gas inflow range approaches the outer peripheral edge of the parent burner cap. As a result, the amount of gas that goes around to the outer end of the slit flame hole is increased, and the fire transfer property is improved.

また、親バーナキャップの上壁部のスリット炎孔を形成する部分の下面に、上方に凹入する窪み部を形成すれば、スリット炎孔を形成する部分の上壁部の厚さが薄くなるため、スリット炎孔の通気抵抗が減少し、その分スリット炎孔からの噴出ガス量が増加して、火移り性が向上する。   Moreover, if the hollow part recessed upwards is formed in the lower surface of the part which forms the slit flame hole of the upper wall part of the parent burner cap, the thickness of the upper wall part of the part which forms the slit flame hole becomes thin. Therefore, the ventilation resistance of the slit flame hole is reduced, the amount of gas ejected from the slit flame hole is increased correspondingly, and the fire transfer property is improved.

以下、本発明の実施形態を図面を参照して説明する。図１は本発明親子バーナの第１実施形態の平面図、図２は図１のＩＩ−ＩＩ線で切断した断面図、図３は図１のＩＩＩ−ＩＩＩ線で切断した親バーナキャップの展開断面図、図４は図１のＩＶ−ＩＶ線で切断した親バーナキャップの断面図、図５は図１のＶ−Ｖ線で切断した親バーナキャップの断面図、図６は図５のＶＩ−ＶＩ線切断面図、図７は図５のＶＩＩ−ＶＩＩ線切断面図、図８は比較例の親バーナキャップの断面図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of a first embodiment of the parent-child burner of the present invention, FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. 3 is a development of a parent burner cap taken along line III-III in FIG. 4 is a cross-sectional view of the parent burner cap cut along line IV-IV in FIG. 1, FIG. 5 is a cross-sectional view of the parent burner cap cut along line V-V in FIG. 1, and FIG. FIG. 7 is a sectional view taken along line VII-VII in FIG. 5, and FIG. 8 is a sectional view of a parent burner cap of a comparative example .

図１、図２に示すバーナは、子バーナ１と子バーナ１を囲う親バーナ２とから成るコンロ用の親子バーナであり、図示省略したコンロ本体内の台枠３上に載置固定されている。この親子バーナは、子バーナ混合管４と親バーナ混合管５とを備えている。そして、各混合管４，５の上流端に各別のガスノズル４ａ，５ａを臨ませ、各ガスノズル４ａ，５ａから噴出される燃料ガスと燃料ガスの噴出に伴い吸引される一次空気との混合気が各混合管４，５で生成されるようにしている。両混合管４，５は、その下流側の部分において一体化され、鋳鉄により一体鋳造される。両混合管４，５の一体化部分は、子バーナ混合管４の下流側部分である上方に開口する内筒４ｂと、親バーナ混合管５の下流側部分である上方に開口する外筒５ｂとから成る内外２重の筒形状に形成されている。   The burner shown in FIG. 1 and FIG. 2 is a stove-use parent-child burner comprising a child burner 1 and a parent burner 2 surrounding the child burner 1, and is placed and fixed on a base frame 3 in a stove main body (not shown). Yes. The parent / child burner includes a child burner mixing tube 4 and a parent burner mixing tube 5. Then, the different gas nozzles 4a and 5a are faced to the upstream ends of the mixing tubes 4 and 5, respectively, and a mixture of the fuel gas ejected from the gas nozzles 4a and 5a and the primary air sucked in as the fuel gas is ejected. Is generated in each mixing tube 4, 5. Both mixing pipes 4 and 5 are integrated in the downstream part, and are integrally cast with cast iron. The integrated part of both mixing pipes 4 and 5 includes an inner cylinder 4 b that opens upward, which is a downstream part of the child burner mixing pipe 4, and an outer cylinder 5 b that opens upward, which is a downstream part of the parent burner mixing pipe 5. It is formed in the inner and outer double cylinder shape.

また、親子バーナは、内筒４ｂの上端に嵌合する子バーナヘッド６と、子バーナヘッド６を囲う環状の親バーナヘッド７とを備えている。子バーナヘッド６と親バーナヘッド７とは、外筒５ｂに嵌合して親バーナ混合管５からの混合気を親バーナヘッド７に導く周方向３箇所の通路部８を介して一体化されている。そして、子バーナヘッド６と親バーナヘッド７とは鋳鉄により一体鋳造される。   Further, the parent / child burner includes a child burner head 6 fitted to the upper end of the inner cylinder 4 b and an annular parent burner head 7 surrounding the child burner head 6. The child burner head 6 and the parent burner head 7 are integrated via three passage portions 8 in the circumferential direction that are fitted into the outer cylinder 5 b and guide the air-fuel mixture from the parent burner mixing tube 5 to the parent burner head 7. ing. The child burner head 6 and the parent burner head 7 are integrally cast from cast iron.

また、子バーナヘッド６には真鍮製の子バーナキャップ９が載置され、子バーナ混合管４と子バーナヘッド６と子バーナキャップ９とで子バーナ１が構成される。子バーナキャップ９の周壁部には、周方向の間隔を存して複数の子バーナ炎孔９ａが形成されている。そして、子バーナ混合管４から供給される混合気が子バーナヘッド６と子バーナキャップ９との間に画成される分布室を介して子バーナ炎孔９ａから噴出される。   Further, a child burner cap 9 made of brass is placed on the child burner head 6, and the child burner 1 is constituted by the child burner mixing tube 4, the child burner head 6 and the child burner cap 9. A plurality of sub-burner flame holes 9 a are formed in the peripheral wall portion of the sub-burner cap 9 at intervals in the circumferential direction. Then, the air-fuel mixture supplied from the child burner mixing tube 4 is ejected from the child burner flame hole 9 a through a distribution chamber defined between the child burner head 6 and the child burner cap 9.

親バーナヘッド７には、子バーナキャップ９を囲う環状の親バーナキャップ１０が載置され、親バーナ混合管５と親バーナヘッド７と親バーナキャップ１０とで親バーナ２が構成される。親バーナキャップ１０は、真鍮製であって、親バーナヘッド７の外周の立上り壁７ａに着座する外周側の周壁部を備えており、この周壁部に、周方向の間隔を存して複数の親バーナ炎孔１０ａが形成されている。そして、親バーナ混合管５から供給される混合気が親バーナヘッド７と親バーナキャップ１０との間に画成される分布室を介して親バーナ炎孔１０ａから噴出される。   An annular parent burner cap 10 that surrounds the child burner cap 9 is placed on the parent burner head 7, and the parent burner 2 is constituted by the parent burner mixing tube 5, the parent burner head 7, and the parent burner cap 10. The parent burner cap 10 is made of brass and includes a peripheral wall portion on the outer peripheral side that is seated on the rising wall 7a on the outer periphery of the parent burner head 7, and a plurality of circumferential wall intervals are provided on the peripheral wall portion. A parent burner flame hole 10a is formed. Then, the air-fuel mixture supplied from the parent burner mixing tube 5 is ejected from the parent burner flame hole 10 a through a distribution chamber defined between the parent burner head 7 and the parent burner cap 10.

尚、親バーナキャップ１０の外周側周壁部は、図３に示すように、周方向の間隔を存して垂設された複数の歯部を有する歯形形状に形成されており、これら歯部間の隙間で親バーナ炎孔１０ａが構成され、各歯部で親バーナ炎孔１０ａを区画する隔壁部１０ｂが構成される。また、各隔壁部１０ｂの下端には、保炎孔となる凹溝１０ｃが形成されている。また、親バーナキャップ１０の内周には、親バーナヘッド７の内周の立上り壁７ｂに内嵌する筒状の嵌合部１０ｄが形成され、親バーナヘッド７に対し親バーナキャップ１０が芯決めされるようにしている。   As shown in FIG. 3, the outer peripheral side peripheral wall portion of the parent burner cap 10 is formed in a tooth shape having a plurality of tooth portions suspended at intervals in the circumferential direction. A parent burner flame hole 10a is formed by the gap, and a partition wall portion 10b that partitions the parent burner flame hole 10a is formed by each tooth portion. Further, a concave groove 10c serving as a flame holding hole is formed at the lower end of each partition wall portion 10b. Further, a cylindrical fitting portion 10 d that fits inside the rising wall 7 b of the inner periphery of the parent burner head 7 is formed on the inner periphery of the parent burner cap 10, and the parent burner cap 10 is centered on the parent burner head 7. It is decided to be decided.

前記台枠３には、親バーナキャップ１０に臨む点火プラグ１１と、子バーナキャップ９に臨む火炎検知素子たる熱電対１２とが取り付けられている。そして、点火プラグ１１の火花放電で親バーナ２に点火し、子バーナ１に親バーナ２から火移りさせ、子バーナ１への火移りを熱電対１２で検出するようにしている。   A spark plug 11 that faces the parent burner cap 10 and a thermocouple 12 that is a flame detection element facing the child burner cap 9 are attached to the underframe 3. Then, the main burner 2 is ignited by the spark discharge of the spark plug 11, the child burner 1 is transferred from the parent burner 2, and the fire transfer to the child burner 1 is detected by the thermocouple 12.

ここで、親バーナキャップ１０の上壁部１０ｅには、内周側に位置する周方向に近接した一対の火移り炎孔１０ｆ，１０ｆと、両火移り炎孔１０ｆ，１０ｆ間から径方向外方にのびるスリット炎孔１０ｇとが開設されている。そして、親バーナ炎孔１０ａからスリット炎孔１０ｇに火移りされ、スリット炎孔１０ｇから火移り炎孔１０ｆを介して子バーナ炎孔９ａへの火移りが行われるようしている。尚、火移り炎孔１０ｆは、炎が子バーナキャップ９側にのびるように、図４に示す如く、径方向内方に傾けて形成した丸孔で構成されている。   Here, the upper wall portion 10e of the parent burner cap 10 has a pair of fire-transfer flame holes 10f, 10f located in the circumferential direction located on the inner peripheral side, and radially outward from between the two fire-transfer flame holes 10f, 10f. A slit flame hole 10g extending in the direction is opened. Then, fire is transferred from the parent burner flame hole 10a to the slit flame hole 10g, and fire transfer from the slit flame hole 10g to the child burner flame hole 9a is performed via the fire transfer flame hole 10f. As shown in FIG. 4, the fire transfer flame hole 10f is formed of a round hole formed so as to be inclined inward in the radial direction so that the flame extends toward the child burner cap 9.

スリット炎孔１０ｇは、図５に示す如く、隔壁部１０ｂの上部を通って親バーナキャップ１０の外周縁に達するように形成されている。そして、隔壁部１０ｂを、スリット炎孔１０ｇの両側面を結ぶ肉部として切り残している。ここで、隔壁部１０ｂを完全に分断するようにスリット炎孔１０ｇを形成すると、親バーナキャップ１０の熱膨張でスリット炎孔１０ｇが径方向外方に向かって幅狭になるように狭窄され、スリット炎孔１０ｇからの噴出ガス量が減少して火移り性が悪くなる。特に、本実施形態では、親バーナキャップ１０が真鍮製で鋳鉄製の親バーナヘッド６よりも熱膨張率が大きく、且つ、親バーナキャップ１０の熱膨張が親バーナヘッド６に対する内周の嵌合部１０ｄで規制されるため、親バーナキャップ１０全体が均等に熱膨張せず、その結果、スリット炎孔１０ｇが親バーナキャップ１０の熱膨張の逃げ部となって、スリット孔１０ｇが狭窄され易くなる。   As shown in FIG. 5, the slit flame hole 10 g is formed so as to reach the outer peripheral edge of the parent burner cap 10 through the upper portion of the partition wall portion 10 b. And the partition part 10b is left uncut as a meat part which ties the both sides | surfaces of the slit flame hole 10g. Here, when the slit flame hole 10g is formed so as to completely divide the partition wall portion 10b, the slit flame hole 10g is narrowed by the thermal expansion of the parent burner cap 10 such that the slit flame hole 10g becomes narrower radially outward. The amount of gas ejected from the slit flame hole 10g is reduced and the fire transfer property is deteriorated. In particular, in the present embodiment, the parent burner cap 10 is made of brass and has a larger coefficient of thermal expansion than the parent burner head 6 made of cast iron, and the thermal expansion of the parent burner cap 10 is fitted to the inner burner head 6. Since the main burner cap 10 is not thermally expanded evenly by the portion 10d, the slit flame hole 10g serves as a thermal expansion escape portion of the parent burner cap 10, and the slit hole 10g is easily constricted. Become.

一方、上記の如く隔壁部１０ｂを切り残しておけば、親バーナキャップ１０の熱膨張によりスリット炎孔１０ｇの幅を狭めようとする応力が作用した場合、隔壁部１０ｂに圧縮応力が発生する。そして、この圧縮応力が抵抗力として働いて、即ち、隔壁部１０ｂが支えとなって、スリット炎孔１０ｇの狭窄が抑制され、火移り性が良好に維持される。   On the other hand, if the partition wall portion 10b is left uncut as described above, a compressive stress is generated in the partition wall portion 10b when a stress is applied to narrow the width of the slit flame hole 10g due to thermal expansion of the parent burner cap 10. The compressive stress acts as a resistance force, that is, the partition wall 10b serves as a support, and the constriction of the slit flame hole 10g is suppressed, and the fire transfer property is maintained well.

また、本実施形態では、スリット炎孔１０ｇが通る隔壁部１０ｂの内周面に、図６に示す如く、径方向外方に凹入する窪み部１０ｈを、その上端がスリット炎孔１０ｇに達するように形成している。これによれば、スリット炎孔１０ｇのガス流入範囲(分布室に連通する範囲)の径方向最外端の位置が窪み部１０ｈの分だけ親バーナキャップ１０の外周縁に近づく。その結果、親バーナキャップ１０の外周縁に位置するスリット炎孔１０ｇの外端にまで回り込む混合気量が増して、火移り性が向上する。   Further, in this embodiment, as shown in FIG. 6, a recess 10h that is recessed radially outward is formed on the inner peripheral surface of the partition wall 10b through which the slit flame hole 10g passes, and the upper end thereof reaches the slit flame hole 10g. It is formed as follows. According to this, the position of the radially outermost end of the gas inflow range (the range communicating with the distribution chamber) of the slit flame hole 10g approaches the outer peripheral edge of the parent burner cap 10 by the amount of the recessed portion 10h. As a result, the amount of air-fuel mixture that goes around to the outer end of the slit flame hole 10g located at the outer peripheral edge of the parent burner cap 10 is increased, and the fire transfer property is improved.

更に、本実施形態では、親バーナキャップ１０の上壁部１０ｅのスリット炎孔１０ｇを形成する部分の下面に、図７に示す如く、上方に凹入する窪み部１０ｉを形成している。これによれば、スリット炎孔１０ｇを形成する部分の上壁部１０ｅの厚さが薄くなるため、スリット炎孔１０ｇの通気抵抗が減少し、その分スリット炎孔１０ｇからの噴出混合気量が増加して、火移り性が向上する。   Furthermore, in this embodiment, as shown in FIG. 7, a recessed portion 10i that is recessed upward is formed on the lower surface of the portion of the upper wall portion 10e of the parent burner cap 10 where the slit flame hole 10g is formed. According to this, since the thickness of the upper wall part 10e which forms the slit flame hole 10g becomes thin, the ventilation resistance of the slit flame hole 10g decreases, and the amount of the air-fuel mixture ejected from the slit flame hole 10g correspondingly decreases. Increases and improves fire transfer.

ここで、上記窪み部１０ｈ，１０ｉは連続しており、親バーナキャップ１０の鍛造時に成形される。そして、親バーナキャップ１０の鍛造後に、図５に仮想線で示す円形カッターＣによりスリット炎孔１０ｇを切削加工するが、窪み部１０ｈ，１０ｉが存在することで削り代が減少し、スリット炎孔１０ｇの加工が容易になる。   Here, the said recessed part 10h, 10i is continuous, and is shape | molded at the time of the forge of the parent burner cap 10. FIG. Then, after forging the master burner cap 10, the slit flame hole 10g is cut by the circular cutter C indicated by the phantom line in FIG. 5, but the machining allowance is reduced due to the presence of the recessed portions 10h, 10i, and the slit flame hole 10g processing becomes easy.

また、スリット炎孔１０ｇは、親バーナ混合管５からの混合気を親バーナヘッド６に導く通路部８から離れた周方向位置に形成されている。これは、スリット炎孔１０ｇが通路部８に近いと、スリット炎孔１０ｇからの噴出混合気量が過大になって、リフトを生ずるためである。   The slit flame hole 10 g is formed at a circumferential position away from the passage portion 8 that guides the air-fuel mixture from the parent burner mixing tube 5 to the parent burner head 6. This is because if the slit flame hole 10g is close to the passage portion 8, the amount of air-fuel mixture ejected from the slit flame hole 10g becomes excessive, and lift occurs.

ところで、スリット炎孔１０ｇの径方向外端の位置を親バーナキャップ１０の外周縁より内方に設定することも可能であるが、これではスリット炎孔１０ｇから噴出される混合気が親バーナ炎孔１０ａの炎の近くまで及びにくくなり、火移り性が悪くなる。従って、スリット炎孔１０ｇは、親バーナキャップ１０の外周縁に達するように形成することが望ましい。この場合、図８に示す比較例の如く、スリット炎孔１０ｇを、親バーナ炎孔１０ａの形成位置を通って親バーナキャップ１０の外周縁に達するように形成することも可能である。然し、この場合には、スリット炎孔１０ｇと親バーナ炎孔１０ａの上端との間の僅かな肉部１０ｊしか切り残すことができず、強度不足でスリット炎孔１０ｇの狭窄を十分に抑制できなくなる。従って、上記第１実施形態のように、スリット炎孔１０ｇを、親バーナ炎孔１０ａ間に位置する何れかの隔壁部１０ｂの上部を通って親バーナキャップ１０の外周縁に達するように形成し、隔壁部１０ｂを切り残すことが望ましい。 Incidentally, the position of the radially outer end of the slit flame hole 10g can be set inward from the outer peripheral edge of the parent burner cap 10, but in this case, the air-fuel mixture ejected from the slit flame hole 10g becomes the parent burner flame. It becomes difficult to reach the vicinity of the flame of the hole 10a, and the fire transfer property is deteriorated. Therefore, it is desirable to form the slit flame hole 10 g so as to reach the outer peripheral edge of the parent burner cap 10. In this case, as in the comparative example shown in FIG. 8, it is also possible to form the slit flame hole 10g so as to reach the outer peripheral edge of the parent burner cap 10 through the formation position of the parent burner flame hole 10a. However, in this case, only a small portion 10j between the slit flame hole 10g and the upper end of the parent burner flame hole 10a can be left, and the constriction of the slit flame hole 10g can be sufficiently suppressed due to insufficient strength. Disappear. Therefore, as in the first embodiment, the slit flame hole 10g is formed so as to reach the outer peripheral edge of the parent burner cap 10 through the upper part of any partition wall portion 10b located between the parent burner flame holes 10a. It is desirable to leave the partition wall 10b.

尚、上記実施形態では、点火プラグ１１により親バーナ２に点火して、親バーナ２から子バーナ１に火移りさせるようにしたが、子バーナ１に点火して子バーナ１から親バーナ２に火移りさせる場合にも、同様に本発明を適用できる。また、上記実施形態では、子バーナ混合管４と親バーナ混合管５とを一体化すると共に、子バーナヘッド６と親バーナヘッド７とを一体化したが、これらを夫々別体に形成してもよい。   In the above-described embodiment, the main burner 2 is ignited by the spark plug 11 and fire is transferred from the parent burner 2 to the child burner 1. However, the child burner 1 is ignited and the child burner 1 is changed to the parent burner 2. The present invention can be similarly applied to the case of transferring fire. Further, in the above embodiment, the child burner mixing tube 4 and the parent burner mixing tube 5 are integrated, and the child burner head 6 and the parent burner head 7 are integrated, but they are formed separately. Also good.

本発明親子バーナの第１実施形態の平面図。The top view of 1st Embodiment of this invention parent-child burner. 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. 図１のＩＩＩ−ＩＩＩ線で切断した親バーナキャップの展開断面図。The expanded sectional view of the parent burner cap cut | disconnected by the III-III line of FIG. 図１のＩＶ−ＩＶ線で切断した親バーナキャップの断面図。Sectional drawing of the parent burner cap cut | disconnected by the IV-IV line of FIG. 図１のＶ−Ｖ線で切断した親バーナキャップの断面図。Sectional drawing of the parent burner cap cut | disconnected by the VV line | wire of FIG. 図５のＶＩ−ＶＩ線切断面図。FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. 図５のＶＩＩ−ＶＩＩ線切断面図。FIG. 7 is a sectional view taken along line VII-VII in FIG. 5. 比較例の親バーナキャップの断面図。Sectional drawing of the parent burner cap of a comparative example .

符号の説明Explanation of symbols

１…子バーナ、２…親バーナ、９…子バーナキャップ，９ａ…子バーナ炎孔、１０…親バーナキャップ，１０ａ…親バーナ炎孔、１０ｂ…隔壁部、１０ｅ…上壁部、１０ｇ…スリット炎孔、１０ｈ…隔壁部の窪み部、１０ｉ…上壁部の窪み部。   DESCRIPTION OF SYMBOLS 1 ... Child burner, 2 ... Parent burner, 9 ... Child burner cap, 9a ... Child burner flame hole, 10 ... Parent burner cap, 10a ... Parent burner flame hole, 10b ... Septum part, 10e ... Upper wall part, 10g ... Slit Flame holes, 10h: depressions in the partition walls, 10i: depressions in the upper wall.

Claims (3)

子バーナキャップと、子バーナキャップを囲う環状の親バーナキャップとを備え、子バーナキャップの周壁部に子バーナ炎孔を周方向の間隔を存して複数形成すると共に、親バーナキャップの外周側の周壁部に親バーナ炎孔を周方向の間隔を存して複数形成して成る親子バーナであって、
親バーナキャップの上壁部に、親バーナ炎孔と子バーナ炎孔との間の火移りのための径方向にのびるスリット炎孔を開設するものにおいて、
スリット炎孔を、親バーナキャップの外周側の周壁部の親バーナ炎孔間に位置する何れかの隔壁部の上部を通って親バーナキャップの外周縁に達するように形成し、この隔壁部がスリット炎孔の両側面を結ぶ肉部として残されることを特徴とする親子バーナ。 A child burner cap and an annular parent burner cap that surrounds the child burner cap are formed, and a plurality of child burner flame holes are formed in the peripheral wall portion of the child burner cap at intervals in the circumferential direction, and the outer peripheral side of the parent burner cap A parent-child burner formed by forming a plurality of parent burner flame holes at circumferential intervals on the peripheral wall portion of
In the upper wall portion of the parent burner cap, a slit flame hole extending in the radial direction for fire transfer between the parent burner flame hole and the child burner flame hole is opened.
The slit flame hole is formed so as to reach the outer peripheral edge of the parent burner cap through the upper part of any partition wall portion located between the parent burner flame holes on the outer peripheral side wall portion of the parent burner cap. A parent-child burner characterized in that it is left as a meat portion connecting both sides of the slit flame hole . 前記隔壁部の内周面に、径方向外方に凹入する窪み部を前記スリット炎孔に達するように形成することを特徴とする請求項１に記載の親子バーナ。 2. The parent-child burner according to claim 1 , wherein a concave portion that is recessed radially outward is formed on an inner peripheral surface of the partition portion so as to reach the slit flame hole. 前記親バーナキャップの前記上壁部の前記スリット炎孔を形成する部分の下面に、上方に凹入する窪み部を形成することを特徴とする請求項１又は２に記載の親子バーナ。 3. The parent-child burner according to claim 1, wherein a concave portion that is recessed upward is formed on a lower surface of a portion of the upper wall portion of the parent burner cap where the slit flame hole is formed.
JP2003400241A 2003-11-28 2003-11-28 Parent and child burner Expired - Fee Related JP3860568B2 (en)

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KR1020040061462A KR100576036B1 (en) 2003-11-28 2004-08-04 Combined burner
CNB2004100564551A CN100476295C (en) 2003-11-28 2004-08-09 Master and auxiliary combustion device

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KR101767397B1 (en) * 2016-05-31 2017-08-14 린나이코리아 주식회사 Burner for gas range

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JP3860568B2 (en) 2003-11-28 2006-12-20 リンナイ株式会社 Parent and child burner
ITMC20070130A1 (en) * 2007-06-28 2008-12-29 Somi Press Soc Metalli Iniettati Spa DOUBLE BURNER, OF A PERFECT TYPE, FOR GAS COOKERS WITH MORE FLAME CROWNS.
CN101398177B (en) * 2007-09-29 2012-02-08 浙江帅康电气股份有限公司 Stove combustor
JP5350282B2 (en) * 2010-01-22 2013-11-27 リンナイ株式会社 Gas stove
JP2012251760A (en) 2011-05-12 2012-12-20 Rinnai Corp Concentric burner

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