JP2009281609A - Burner for stove - Google Patents

Burner for stove Download PDF

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JP2009281609A
JP2009281609A JP2008131956A JP2008131956A JP2009281609A JP 2009281609 A JP2009281609 A JP 2009281609A JP 2008131956 A JP2008131956 A JP 2008131956A JP 2008131956 A JP2008131956 A JP 2008131956A JP 2009281609 A JP2009281609 A JP 2009281609A
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burner
flame
outlet
area
inlet
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JP4942701B2 (en
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Kazutaka Iwata
一貴 岩田
Kazuyuki Akagi
万之 赤木
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Rinnai Corp
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Rinnai Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a burner for a stove capable of being stably burnt on low heat at an initial period of ignition and preventing lift on high heat, in the burner for the stove in which a number of flame holes 53 long in the vertical direction is formed on a cylindrical wall 52 formed on one of a lower face outer peripheral section of a burner head and an upper face outer peripheral section of a burner body while being kept into contact with the other, at intervals in the circumferential direction. <P>SOLUTION: A width in the vertical direction, of the flame hole 53 is gradually reduced from an inlet section 53a toward an outlet section 53b, its width in the circumferential direction is gradually widened from the inlet section 53a toward the outlet section 53b, an area of the inlet section 53a and an area of the outlet section 53b are same as each other, and a circumferential length of the outlet section 53b is shorter than a circumferential length of the inlet section 53a. The width Win in the circumferential direction of the inlet section 53a of the flame hole 53 is less than a flame quenching distance to prevent backfire. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ガスコンロで用いるコンロ用バーナに関する。   The present invention relates to a stove burner used in a gas stove.

一般的なコンロ用バーナは、バーナボディ上に設けられるバーナヘッドの下面外周部にバーナボディに着座する筒状壁を垂設し、この筒状壁に、炎孔を周方向の間隔を存して多数形成して、炎孔から噴出する混合気をバーナヘッドの外周で燃焼させるようにした外炎式バーナで構成されている。   In a general stove burner, a cylindrical wall seated on the burner body is suspended from the outer periphery of the lower surface of the burner head provided on the burner body, and flame holes are spaced apart in the circumferential direction on the cylindrical wall. And an external flame type burner configured to burn the air-fuel mixture ejected from the flame hole on the outer periphery of the burner head.

従来、このようなコンロ用バーナにおいて、特許文献１により、各炎孔を、上下方向寸法が入口部から出口部に向けて次第に小さくなると共に、周方向幅が入口部から出口部に向けて次第に狭くなるように形成したものが知られている。そして、このものでは、炎孔の出口面積が入口面積よりも小さくなるため、弱火での保炎性能が向上するとしている。
特開２００５−１７２２７８号公報（図２、図４） Conventionally, in such a stove burner, according to Patent Document 1, each flame hole is gradually reduced in size in the vertical direction from the inlet portion toward the outlet portion, and the circumferential width gradually decreases from the inlet portion toward the outlet portion. What was formed so that it might become narrow was known. And in this thing, since the exit area of a flame hole becomes smaller than an entrance area, it is supposed that the flame holding performance in low heat will improve.
Japanese Patent Laying-Open No. 2005-172278 (FIGS. 2 and 4)

然し、上記従来例のものでは、バーナヘッドの温度が低い点火初期に弱火にすると、安定して燃焼しなくなる場合があることが分かった。本願発明者の鋭意努力の結果、その原因は、炎孔の出口部の周長が面積の割りに長くなり、火炎からバーナヘッドへの熱引けを生じ易くなるためであると判明した。   However, it has been found that in the above-mentioned conventional example, if the low burner is used at the beginning of ignition when the temperature of the burner head is low, combustion may not be stably performed. As a result of the inventor's diligent efforts, it has been found that the cause is that the peripheral length of the exit portion of the flame hole becomes longer than the area, and heat is likely to be burned from the flame to the burner head.

また、上記従来例の如く炎孔の出口部の面積を入口部の面積より小さくすると、強火での燃焼時に、混合気の噴出速度が速くなりすぎて、リフトを生じ易くなる。   Further, when the area of the exit part of the flame hole is made smaller than the area of the entrance part as in the above-mentioned conventional example, the jet speed of the air-fuel mixture becomes too fast at the time of combustion with a strong fire, and lift tends to occur.

本発明は、以上の点に鑑み、点火初期に弱火で安定燃焼させることができると共に、強火でのリフトも防止できるようにしたコンロ用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, an object of the present invention is to provide a stove burner that can stably burn with a low fire in the early stage of ignition and can also prevent a lift with a strong fire.

上記課題を解決するために、本発明は、バーナボディと、バーナボディ上に設けられるバーナヘッドとを備え、バーナヘッドの下面外周部にバーナボディに着座する筒状壁が垂設され、筒状壁に、上下方向に長手の炎孔が周方向の間隔を存して多数形成されたコンロ用バーナであって、各炎孔は、上下方向寸法が入口部から出口部に向かって次第に小さくなり、周方向幅が入口部から出口部に向かって次第に広くなり、入口部の面積と出口部の面積が同等であって、出口部の周長が入口部の周長よりも短くなるように形成されることを特徴とする。   In order to solve the above-mentioned problems, the present invention comprises a burner body and a burner head provided on the burner body, and a cylindrical wall seated on the burner body is provided vertically on the outer periphery of the lower surface of the burner head, This is a stove burner in which a number of vertical flame holes in the vertical direction are formed in the wall at intervals in the circumferential direction. Each flame hole gradually decreases in size in the vertical direction from the inlet to the outlet. The width in the circumferential direction gradually increases from the inlet portion toward the outlet portion, and the area of the inlet portion and the area of the outlet portion are the same, and the peripheral length of the outlet portion is shorter than the peripheral length of the inlet portion. It is characterized by being.

本発明によれば、炎孔の出口部の面積が入口部の面積と同等であるにも拘らず、出口部の周長が入口部の周長より短くなる。そのため、炎孔の出口部における火炎からバーナヘッドへの熱引けが抑制され、バーナヘッドの温度が低い点火初期に弱火にしても、安定して燃焼する。また、炎孔の出口部の面積が入口部の面積と同等であるため、出口部での流速増加がなくなり、強火でのリフトも防止できる。   According to the present invention, although the area of the exit part of the flame hole is equal to the area of the entrance part, the circumference of the exit part becomes shorter than the circumference of the entrance part. For this reason, the heat sink from the flame to the burner head at the outlet of the flame hole is suppressed, and even if the burner head temperature is low and the ignition is weak at the beginning of ignition, the flame burns stably. Moreover, since the area of the exit part of a flame hole is equivalent to the area of an entrance part, the flow velocity increase in an exit part is lose | eliminated and the lift by a strong fire can also be prevented.

更に、本発明においては、各炎孔の入口部の周方向幅が消炎距離以下であることが望ましい。これによれば、炎孔の入口部で火炎伝播が阻止され、逆火を生じない。   Furthermore, in the present invention, it is desirable that the circumferential width of the inlet portion of each flame hole is equal to or less than the extinguishing distance. According to this, flame propagation is prevented at the entrance of the flame hole, and no backfire occurs.

図１を参照して、１は図示省略したコンロ本体の上面を覆う天板、２はコンロ用バーナを示している。天板１にはバーナ用開口１ａが開設されている。また、天板１上には、バーナ用開口１ａを囲うようにして図示省略した五徳が載置される。そして、五徳に載置する鍋等の被加熱部がバーナ２で加熱される。   With reference to FIG. 1, 1 is a top plate which covers the upper surface of the stove main body which illustration was abbreviate | omitted, 2 has shown the burner for stove. The top plate 1 has a burner opening 1a. On the top plate 1, five virtues not shown so as to surround the burner opening 1 a are placed. And a to-be-heated part, such as a pan mounted in Gotoku, is heated with the burner 2.

バーナ２は、コンロ本体内に設置される混合管３と、混合管３に接続されバーナ用開口１ａを通して天板１上に露出するバーナボディ４と、バーナボディ４上に着脱自在に載置されるバーナヘッド５とで構成される。コンロ本体内には、混合管３の上流端に臨む図示省略したガスノズルが設けられており、ガスノズルから噴出する燃料ガスと混合管３の上流端から吸引される一次空気との混合気がバーナボディ４に供給される。   The burner 2 is detachably mounted on the mixing tube 3 installed in the stove body, the burner body 4 connected to the mixing tube 3 and exposed on the top plate 1 through the burner opening 1a, and the burner body 4. And the burner head 5. A gas nozzle (not shown) facing the upstream end of the mixing tube 3 is provided in the stove body, and the mixture of the fuel gas ejected from the gas nozzle and the primary air sucked from the upstream end of the mixing tube 3 is burner body. 4 is supplied.

バーナボディ４は、内筒部４１と外筒部４２とから成る内外２重筒構造に構成されている。バーナボディ４の外筒部４２の上端には、外曲げフランジ部４３が形成され、更に、外曲げフランジ部４３の外周から下方にのびるスカート部４４が形成されている。そして、スカート部４４に外嵌するカバーリング４５により、バーナ用開口１ａを上方から閉塞し、煮こぼれ汁がバーナ用開口１ａからコンロ本体内に落下することを防止している。   The burner body 4 has an inner / outer double cylinder structure composed of an inner cylinder part 41 and an outer cylinder part 42. An outer bent flange portion 43 is formed at the upper end of the outer cylinder portion 42 of the burner body 4, and a skirt portion 44 extending downward from the outer periphery of the outer bent flange portion 43 is formed. Then, the cover ring 45 fitted on the skirt portion 44 closes the burner opening 1a from above, thereby preventing the simmered juice from falling into the stove body from the burner opening 1a.

バーナヘッド５は、真鍮等の耐蝕金属製の鍛造品であって、環状に形成されている。バーナヘッド５の内周には、バーナボディ４の内筒部４１に嵌合する筒部５１が垂設され、また、バーナヘッド５の下面外周部には、バーナボディ４の上面外周部、即ち、外曲げフランジ部４３に着座する筒状壁５２が垂設されている。筒状壁５２には、上下方向に長手の炎孔５３が周方向の間隔を存して多数形成されている。かくして、バーナボディ４に供給された混合気が炎孔５３から噴出してバーナヘッド５の外周で燃焼する外炎式バーナが構成される。   The burner head 5 is a forged product made of a corrosion-resistant metal such as brass, and is formed in an annular shape. On the inner periphery of the burner head 5, a cylinder portion 51 that fits into the inner cylinder portion 41 of the burner body 4 is suspended, and on the lower surface outer periphery of the burner head 5, the upper surface outer periphery of the burner body 4, A cylindrical wall 52 seated on the outer bending flange portion 43 is suspended. A large number of flame holes 53 that are long in the vertical direction are formed in the cylindrical wall 52 at intervals in the circumferential direction. Thus, an external flame type burner in which the air-fuel mixture supplied to the burner body 4 is ejected from the flame hole 53 and burned on the outer periphery of the burner head 5 is configured.

尚、図２に示す如く、筒状壁５２の周囲１箇所には、点火炎孔５４が形成されており、点火炎孔５４に臨ませて配置した点火プラグ（図示せず）によりバーナ２への点火が行われる。また、五徳を構成する五徳爪に火炎が触れると燃焼不良を生ずるため、五徳爪と同一方位に位置する筒状壁５２の部分には、上下方向長さを短くした小炎孔５５を形成し、火炎が五徳爪に触れることを防止している。   As shown in FIG. 2, an ignition flame hole 54 is formed at one location around the cylindrical wall 52, and is connected to the burner 2 by an ignition plug (not shown) arranged facing the ignition flame hole 54. Is ignited. In addition, when a flame touches the five virtue claws constituting the five victories, a combustion failure occurs. Therefore, a small flame hole 55 having a short vertical length is formed in a portion of the cylindrical wall 52 located in the same direction as the five virtue claws. , Preventing the flame from touching the five virtue nails.

ここで、バーナボディ４の外曲げフランジ部４３は、径方向外方に向かって上方に傾斜し、これに着座する筒状壁５２の下端も、径方向外方に向かって、即ち、各炎孔５３の入口部５３ａから出口部５３ｂに向かって上方に傾斜している。一方、各炎孔５３の上面は、入口部５３ａから出口部５３ｂに亘り略水平である。従って、各炎孔５３は、上下方向寸法が入口部５３ａから出口部５３ｂに向かって次第に小さくなる。図３（ａ）を参照して、本実施形態では、入口部５３ａの上下方向寸法Ｈｉｎを７．９ｍｍ、出口部５３ｂの上下方向寸法Ｈｏｕｔを４．６ｍｍに設定している。   Here, the outer bending flange portion 43 of the burner body 4 is inclined upward in the radially outward direction, and the lower end of the cylindrical wall 52 seated thereon is also directed radially outward, that is, each flame. The hole 53 is inclined upward from the inlet 53a toward the outlet 53b. On the other hand, the upper surface of each flame hole 53 is substantially horizontal from the inlet portion 53a to the outlet portion 53b. Accordingly, each flame hole 53 gradually decreases in size in the vertical direction from the inlet portion 53a toward the outlet portion 53b. With reference to Fig.3 (a), in this embodiment, the up-down direction dimension Hin of the entrance part 53a is set to 7.9 mm, and the up-down direction dimension Hout of the exit part 53b is set to 4.6 mm.

また、各炎孔５３は、図３（ｂ）に明示する如く、周方向幅が入口部５３ａから出口部５３ｂに向かって次第に広くなるように形成されている。本実施形態では、入口部５３ａの周方向幅Ｗｉｎを消炎距離以下の１．１ｍｍに設定し、出口部５３ｂの周方向幅Ｗｏｕｔを１．９ｍｍに設定している。その結果、各炎孔５３の入口部５３ａの面積と周長は夫々８．６９ｍｍ２、１８ｍｍになり、出口部５３ｂの面積と周長は夫々８．７４ｍｍ２、１３ｍｍになる。 Each flame hole 53 is formed such that the circumferential width gradually increases from the inlet portion 53a toward the outlet portion 53b, as clearly shown in FIG. In the present embodiment, the circumferential width Win of the inlet portion 53a is set to 1.1 mm which is equal to or less than the extinguishing distance, and the circumferential width Wout of the outlet portion 53b is set to 1.9 mm. As a result, the area and circumferential length of the inlet portion 53a of each flame hole 53 are 8.69 mm 2 and 18 mm, respectively, and the area and circumferential length of the outlet portion 53b are 8.74 mm 2 and 13 mm, respectively.

このように本実施形態では、各炎孔５３の出口部５３ｂの面積が入口部５３ａの面積と同等になるにも拘らず、出口部５３ｂの周長が入口部５３ａの周長よりも短くなる。そのため、炎孔５３の出口部５３ｂにおける火炎からバーナヘッド５への熱引けが抑制され、バーナヘッド５の温度が低い点火初期に弱火にしても、安定して燃焼する。また、炎孔５３の入口部５３ａの周方向幅Ｗｉｎが消炎距離以下であるため、火炎伝播が入口部５３ａで阻止され、逆火を生じない。   As described above, in this embodiment, although the area of the outlet portion 53b of each flame hole 53 is equal to the area of the inlet portion 53a, the peripheral length of the outlet portion 53b is shorter than the peripheral length of the inlet portion 53a. . For this reason, the heat sink from the flame at the outlet 53b of the flame hole 53 to the burner head 5 is suppressed, and the burner head 5 burns stably even if the temperature of the burner head 5 is low even at low ignition. Further, since the circumferential width Win of the inlet portion 53a of the flame hole 53 is equal to or less than the extinguishing distance, flame propagation is blocked by the inlet portion 53a, and no backfire occurs.

尚、炎孔５３の出口部５３ｂの面積は入口部５３ａの面積と同等、より具体的には、入口部５３ａの面積の０．９〜１．１倍に設定することが望ましい。これは、炎孔５３の出口部５３ｂの面積が入口部５３ａの面積の０．９倍未満になると、出口部５３ｂから噴出する混合気の流速が速くなって、強火にしたときにリフトし易くなり、また、炎孔５３の出口部５３ｂの面積が入口部５３ａの面積の１．１倍を越えると、出口部５３ｂの周長が長くなって、点火初期に弱火で安定燃焼できなくなるためである。   The area of the outlet portion 53b of the flame hole 53 is preferably set to be equal to the area of the inlet portion 53a, more specifically 0.9 to 1.1 times the area of the inlet portion 53a. This is because if the area of the outlet portion 53b of the flame hole 53 is less than 0.9 times the area of the inlet portion 53a, the flow velocity of the air-fuel mixture ejected from the outlet portion 53b increases, and it is easy to lift when the flame is ignited. In addition, if the area of the outlet portion 53b of the flame hole 53 exceeds 1.1 times the area of the inlet portion 53a, the peripheral length of the outlet portion 53b becomes long, and stable combustion cannot be achieved with low heat in the initial stage of ignition. is there.

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、上記実施形態では、バーナヘッド５の下面外周部にバーナボディ４の上面外周部に当接する筒状壁５２を設けて、これに炎孔５３を形成したが、バーナボディの上面外周部にバーナヘッドの下面外周部に当接する筒状壁を設けて、これに炎孔を形成することも可能である。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above-described embodiment, the cylindrical wall 52 that contacts the upper surface outer peripheral portion of the burner body 4 is provided on the outer peripheral portion of the lower surface of the burner head 5 and the flame hole 53 is formed in the cylindrical wall 52. It is also possible to provide a cylindrical wall that contacts the outer peripheral portion of the lower surface of the burner head and form a flame hole in this.

本発明の実施形態のコンロ用バーナの断面図。Sectional drawing of the burner for stove of embodiment of this invention. 実施形態のコンロ用バーナのバーナヘッドの下面図。The bottom view of the burner head of the burner for stove of embodiment. （ａ）実施形態のコンロ用バーナのバーナヘッドの要部の拡大断面図、（ｂ）図３（ａ）のＡ−Ａ線で切断したバーナヘッドの切断下面図。(A) The expanded sectional view of the principal part of the burner head of the burner for stove of embodiment, (b) The cutting | disconnection bottom view of the burner head cut | disconnected by the AA line of Fig.3 (a).

符号の説明Explanation of symbols

２…コンロ用バーナ、４…バーナボディ、５…バーナヘッド、５２…筒状壁、５３…炎孔、５３ａ…入口部、５３ｂ…出口部。   2 ... burner for stove, 4 ... burner body, 5 ... burner head, 52 ... cylindrical wall, 53 ... flame hole, 53a ... inlet part, 53b ... outlet part.

Claims (2)

バーナボディと、バーナボディ上に設けられるバーナヘッドとを備え、バーナヘッドの下面外周部とバーナボディの上面外周部との一方に他方に当接する筒状壁が設けられ、筒状壁に、上下方向に長手の炎孔が周方向の間隔を存して多数形成されたコンロ用バーナであって、
各炎孔は、上下方向寸法が入口部から出口部に向かって次第に小さくなり、周方向幅が入口部から出口部に向かって次第に広くなり、入口部の面積と出口部の面積が同等であって、出口部の周長が入口部の周長よりも短くなるように形成されることを特徴とするコンロ用バーナ。 A burner body and a burner head provided on the burner body are provided, and a cylindrical wall that abuts the other is provided on one of the lower surface outer periphery of the burner head and the upper surface outer periphery of the burner body. A stove burner in which a number of flame holes elongated in the direction are formed at intervals in the circumferential direction,
Each flame hole has a vertical dimension that gradually decreases from the inlet to the outlet, and a circumferential width that gradually increases from the inlet to the outlet. The area of the inlet and the area of the outlet are the same. The stove burner is characterized in that the peripheral length of the outlet portion is shorter than the peripheral length of the inlet portion. 前記各炎孔の入口部の周方向幅が消炎距離以下であることを特徴とする請求項１記載のコンロ用バーナ。   The stove burner according to claim 1, wherein a circumferential width of an inlet portion of each flame hole is equal to or less than a flame extinguishing distance.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230031667A (en) * 2021-08-27 2023-03-07 주식회사 디앤디 Gas burner head assembly

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KR102528475B1 (en) * 2021-08-27 2023-05-04 주식회사 디앤디 Gas burner head assembly

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