JP5411240B2 - Gas stove - Google Patents

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JP5411240B2
JP5411240B2 JP2011254133A JP2011254133A JP5411240B2 JP 5411240 B2 JP5411240 B2 JP 5411240B2 JP 2011254133 A JP2011254133 A JP 2011254133A JP 2011254133 A JP2011254133 A JP 2011254133A JP 5411240 B2 JP5411240 B2 JP 5411240B2
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burner
flame
circumferential
main flame
mouth
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JP2013108676A (en
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一貴 岩田
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リンナイ株式会社
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本発明は、天板に開設したバーナ用開口を通して天板上に突出するバーナヘッドを有するコンロバーナと、天板上にバーナ用開口を囲うようにして設置される五徳とを備えるガスコンロに関する。   The present invention relates to a gas stove including a stove burner having a burner head that protrudes on a top plate through a burner opening established in the top plate, and a virtues installed on the top plate so as to surround the burner opening.
従来、この種のガスコンロとして、バーナヘッドの外周部に、五徳の複数の五徳爪と同一方位に位置する複数の五徳合致領域の間の各炎口形成領域に位置させて、混合気が噴出する主炎口が周方向の間隔を存して複数形成され、各主炎口は、混合気噴出方向がバーナヘッドの放射方向に対し周方向一方に傾斜するように形成され、各五徳爪も、その長手方向がバーナヘッドの放射方向に対し周方向一方に傾斜するように形成されるものが知られている(例えば、特許文献1参照)。   Conventionally, as this type of gas stove, an air-fuel mixture is ejected on the outer peripheral portion of the burner head at each flame mouth formation region between a plurality of virtues matching regions located in the same orientation as the plurality of virtues of the five virtues. A plurality of main flame vents are formed at intervals in the circumferential direction, and each main flame vent is formed such that the mixture jet direction is inclined in one circumferential direction with respect to the radial direction of the burner head. There is known one formed such that its longitudinal direction is inclined in one circumferential direction with respect to the radial direction of the burner head (for example, see Patent Document 1).
このものでは、主炎口から噴出する混合気の燃焼で形成される火炎が放射方向に対し周方向一方に傾斜して、五徳に載置する調理容器の底面に対する火炎の接触長さが長くなり、熱効率が向上する。この場合、五徳爪の長手方向がバーナヘッドの放射方向に一致していると、各炎口形成領域の周方向一方の端部に形成する主炎口からのびる火炎が五徳爪に接触して不完全燃焼するが、五徳爪の長手方向を上記の如く放射方向に対し周方向一方に傾斜させることにより、火炎が五徳爪に接触することを防止できる。   In this case, the flame formed by the combustion of the air-fuel mixture ejected from the main flame inlet is inclined in one circumferential direction with respect to the radial direction, and the contact length of the flame with the bottom surface of the cooking vessel placed on the virtues becomes longer. , Improve thermal efficiency. In this case, if the longitudinal direction of the five virtue claws coincides with the radial direction of the burner head, the flame extending from the main flame mouth formed at one end in the circumferential direction of each flame mouth forming region will not contact the virtue claws. Although it burns completely, it is possible to prevent the flame from contacting the virtue claws by inclining the longitudinal direction of the virtue claws in one circumferential direction with respect to the radial direction as described above.
ここで、上記従来例のものでは、バーナヘッドの放射方向に対する主炎口の混合気噴出方向の傾斜角度を全ての主炎口で等しくしている。然し、これでは、各炎口形成領域の周方向他方の端部に形成する主炎口からのびる火炎とこれに隣接する五徳爪との間の周方向間隔が広くなる。そして、この間隔部分では調理容器を火炎で有効に加熱できないため、調理容器の加熱面積が減少して、熱効率の更なる向上を図ることが困難になる。   Here, in the above-described conventional example, the inclination angle of the air-fuel mixture ejection direction of the main flame outlet with respect to the radial direction of the burner head is made equal for all the main flame orifices. However, in this case, the circumferential interval between the flame extending from the main flame mouth formed at the other circumferential end of each flame mouth forming area and the five virtue claws adjacent thereto is widened. And in this space | interval part, since a cooking container cannot be heated effectively with a flame, the heating area of a cooking container reduces and it becomes difficult to aim at the further improvement of thermal efficiency.
特開2003−166718号公報JP 2003-166718 A
本発明は、以上の点に鑑み、熱効率を可及的に向上できるようにしたガスコンロ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 gas stove which enabled it to improve thermal efficiency 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、天板に開設したバーナ用開口を通して天板上に突出するバーナヘッドを有するコンロバーナと、天板上にバーナ用開口を囲うようにして設置される五徳とを備えるガスコンロであって、バーナヘッドの外周部に、五徳の複数の五徳爪と同一方位に位置する複数の五徳合致領域の間の各炎口形成領域に位置させて、混合気が噴出する主炎口が周方向の間隔を存して複数形成され、各主炎口は、混合気噴出方向がバーナヘッドの放射方向に対し周方向一方に傾斜するように形成され、各五徳爪も、その長手方向がバーナヘッドの放射方向に対し周方向一方に傾斜するように形成されるものにおいて、バーナヘッドの放射方向に対する主炎口の混合気噴出方向の傾斜角度は、各炎口形成領域の周方向一方の端部に形成する主炎口よりも周方向他方の端部に形成する主炎口の方が小さいことを特徴とする。   In order to solve the above-mentioned problems, the present invention is installed in a stove burner having a burner head protruding on a top plate through a burner opening established in the top plate, and surrounding the burner opening on the top plate. A gas stove equipped with five virtues, which is located in each flame mouth forming region between a plurality of virtues matching regions located in the same direction as the plurality of virtues of the five virtues on the outer periphery of the burner head, and an air-fuel mixture spouts out A plurality of main flame vents are formed at intervals in the circumferential direction, and each main flame vent is formed such that the mixture jet direction is inclined in one circumferential direction with respect to the radial direction of the burner head. In the case where the longitudinal direction is formed so as to incline in one circumferential direction with respect to the radial direction of the burner head, the inclination angle of the air-fuel mixture ejection direction of the main flame port with respect to the radial direction of the burner head is determined by One end in the circumferential direction Characterized in that the smaller of the main flame hole forming the end portion of the other circumferential than the main flame hole to be formed.
本発明によれば、各炎口形成領域の周方向他方の端部に形成する主炎口の前記傾斜角度を小さくしているため、当該主炎口からのびる火炎とこれに隣接する五徳爪との間の周方向間隔が狭くなる。そして、この間隔が狭くなる分、調理容器の加熱面積が増加し、熱効率が向上する。   According to the present invention, since the inclination angle of the main flame mouth formed at the other circumferential end of each flame mouth formation region is reduced, the flame extending from the main flame mouth and the five virtue claws adjacent thereto The interval in the circumferential direction becomes narrower. And since this space | interval becomes narrow, the heating area of a cooking container increases and thermal efficiency improves.
また、本発明においては、各主炎口の前記傾斜角度を、各炎口形成領域の周方向一方の端部に形成する主炎口から周方向他方の端部に形成する主炎口に向けて順に小さくすることが望ましい。これによれば、各主炎口からのびる火炎とこれに隣接する主炎口からのびる火炎との間の角度が炎口形成領域全体に亘り均等になり、熱効率が可及的に向上する。   In the present invention, the inclination angle of each main flame mouth is directed from the main flame mouth formed at one circumferential end of each flame mouth formation region to the main flame mouth formed at the other circumferential edge. It is desirable to make them smaller in order. According to this, the angle between the flame extending from each main flame mouth and the flame extending from the main flame mouth adjacent thereto is uniform over the entire flame mouth forming region, and the thermal efficiency is improved as much as possible.
尚、バーナヘッドの外周部の周方向1箇所に形成する主炎口を点火炎口として、点火炎口から噴出する混合気に点火電極により点火することも考えられる。然し、これでは、バーナヘッドの外周面に、点火電極に対向するターゲット部を、点火炎口からの混合気噴出方向に合わせて、バーナヘッドの放射方向に対し周方向一方に傾斜した方向に突出するように形成することが必要になり、ターゲット部の加工が面倒になる。   It is also conceivable to ignite the air-fuel mixture ejected from the ignition flame with an ignition electrode, with the main flame opening formed at one place in the circumferential direction of the outer periphery of the burner head as the ignition flame. However, in this case, on the outer peripheral surface of the burner head, the target portion facing the ignition electrode is projected in a direction inclined to one side in the circumferential direction with respect to the radial direction of the burner head in accordance with the direction of air-fuel mixture ejection from the ignition flame port. It is necessary to form the target portion so that the processing of the target portion becomes troublesome.
ここで、コンロバーナが、バーナヘッドの外周部に、親バーナ炎口として前記主炎口を形成すると共に、主炎口よりも下方に周方向の間隔を存して子バーナ炎口を複数形成した親子バーナである場合、ターンダウン比を大きくする上で、子バーナ炎口のみから混合気を噴出する弱火時における調理容器の加熱量をできるだけ小さくすることが必要であり、そのためには、各子バーナ炎口を混合気噴出方向がバーナヘッドの放射方向に一致するように形成した方が良い。そして、バーナヘッドの周方向1箇所に形成する子バーナ炎口を点火炎口とすれば、点火炎口の混合気噴出方向はバーナヘッドの放射方向に一致するため、点火電極に対向するターゲット部は、バーナヘッドの外周面に点火炎口の上方位置から放射方向に突出するように形成すれば済み、ターゲット部の加工が容易になる。   Here, the stove burner forms the main flame mouth as a parent burner flame mouth on the outer periphery of the burner head, and forms a plurality of child burner flame mouths with a circumferential interval below the main flame mouth. In order to increase the turn-down ratio, it is necessary to reduce the heating amount of the cooking container in a low flame that blows out the air-fuel mixture only from the child burner flame opening as much as possible. It is better to form the child burner flame port so that the mixture jet direction coincides with the radial direction of the burner head. Then, if the child burner flame port formed at one place in the circumferential direction of the burner head is an ignition flame port, the air-fuel mixture ejection direction of the ignition flame port coincides with the radial direction of the burner head. Is formed on the outer peripheral surface of the burner head so as to protrude radially from the position above the ignition flame opening, and the processing of the target portion becomes easy.
本発明の実施形態のガスコンロの要部を示す斜視図。The perspective view which shows the principal part of the gas stove of embodiment of this invention. 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. 実施形態のガスコンロに設けられるコンロバーナの斜視図。The perspective view of the stove burner provided in the gas stove of embodiment. コンロバーナの下ヘッド部材の底面図。The bottom view of the lower head member of a stove burner. コンロバーナの上ヘッド部材を取り外した状態のガスコンロの要部の平面図。The top view of the principal part of the gas stove of the state which removed the upper head member of the stove burner.
図1及び図2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である。天板1には、バーナ用開口1aが開設されている。そして、天板1上に、バーナ用開口1aを囲うようにして、環状の五徳枠21に複数の五徳爪22を取り付けて成る五徳2を設置すると共に、コンロ本体に、バーナ用開口1aに臨ませてコンロバーナ3を設置し、ガスコンロを構成している。   With reference to FIG.1 and FIG.2, 1 is a top plate which covers the upper surface of the stove main body which abbreviate | omitted illustration. The top plate 1 has a burner opening 1a. Then, on the top plate 1, the virtues 2 formed by attaching a plurality of virtuosity claws 22 to the annular virtuosity frame 21 so as to surround the burner opening 1 a are installed, and the stove body is exposed to the burner opening 1 a. A stove burner 3 is installed to form a gas stove.
図3も参照して、コンロバーナ3は親子バーナであり、親バーナ混合管4及び子バーナ混合管4と、両混合管4,4に連なり、バーナ用開口1aに挿入されるバーナボディ5と、バーナボディ5に装着され、天板1上に突出する平面視円形のバーナヘッド6とを備える。バーナヘッド6の外周部には、親バーナ炎口としての主炎口7とそれより下方の子バーナ炎口7とが夫々周方向の間隔を存して複数形成されている。尚、五徳2の複数の五徳爪22と同一方位に位置するバーナヘッド6の周方向領域(正確には、五徳爪22の内方への延長線とバーナヘッド6との交差点を中心とする所定の周方向範囲の領域)を五徳合致領域6aとして、各五徳合致領域6aには、五徳爪22に火炎が触れて不完全燃焼することを防止するため、主炎口7を形成せずに子バーナ炎口7のみを形成している。 Figure 3 also refer, stove burners 3 is child burner, the parent burner mixing tube 4 1 child burner mixing tube 4 2, both mixing tubes 4 1, 4 2 in succession, is inserted into the burner opening 1a A burner body 5 and a burner head 6 mounted on the burner body 5 and projecting on the top plate 1 are provided. The outer periphery of the burner head 6, formed with a plurality to exist child burner flame hole 7 2 Togaotto s circumferential direction between main flame ports 71 and its more downward as a parent burner flame hole. It should be noted that the circumferential region of the burner head 6 located in the same orientation as the plurality of five virtue claws 22 of Gotoku 2 (more precisely, a predetermined centering on the intersection of the burner head 6 with an inward extension line of the five virtue claws 22 the region of the circumferential extent) as trivet match area 6a, each trivet match area 6a, in order to prevent the incomplete combustion touching the flame trivet claws 22, without forming the main flame ports 7 1 forming only the children burner flame hole 7 2.
バーナボディ5は、外側の筒体51と中間の筒体52と内側の筒体53との内外3重の筒体で構成され、中間筒体52と内側筒体53との間に親バーナ混合管4からの混合気(燃料ガスと一次空気との混合ガス)が供給され、外側筒体51と中間筒体52との間に子バーナ混合管4からの混合気が供給される。外側筒体51には、その上端部外周から垂下するスカート部51aが設けられている。そして、スカート部51aに、バーナ用開口1aを覆うバーナリング54を外挿し、このバーナリング54に五徳枠21を外挿することにより、五徳2をコンロバーナ3に対し芯決めできるようにしている。 The burner body 5 is composed of an inner and outer triple cylinder including an outer cylinder 51, an intermediate cylinder 52, and an inner cylinder 53, and a parent burner mixed between the intermediate cylinder 52 and the inner cylinder 53. been supplied (the mixed gas of the fuel gas and the primary air) mixture from the tube 4 1, the air-fuel mixture from the child burner mixing tube 4 2 between the outer cylinder 51 and the intermediate cylinder 52 is supplied. The outer cylindrical body 51 is provided with a skirt portion 51a that hangs down from the outer periphery of the upper end portion. Then, a burner ring 54 that covers the burner opening 1 a is extrapolated to the skirt portion 51 a, and the five virtue frames 21 are extrapolated to the burner ring 54, so that the five virtues 2 can be centered with respect to the stove burner 3. .
また、コンロバーナ3には、バーナリング54を通して上方に突出する点火電極8と熱電対9とが付設されており、これら点火電極8と熱電対9によりバーナリング54がコンロバーナ3に対し回り止めされる。そして、五徳枠21の内周の2箇所に突起21aを形成すると共に、バーナリング54の外周の2箇所に切欠き54aを形成し、各突起21aを各切欠き54aに係合させることにより、五徳2をコンロバーナ3に対し位相決めできるようにしている。   Further, an ignition electrode 8 and a thermocouple 9 projecting upward through the burner ring 54 are attached to the burner 3, and the burner ring 54 is prevented from rotating with respect to the burner 3 by the ignition electrode 8 and the thermocouple 9. Is done. And while forming the protrusion 21a in two places of the inner periphery of the five virtue frame 21, forming the notch 54a in two places of the outer periphery of the burner ring 54, and engaging each protrusion 21a with each notch 54a, The virtues 2 can be phased with respect to the combo burner 3.
バーナヘッド6は、バーナボディ5の外側筒体51の上端部に着座する外筒部61aと、外筒部61aの下部内周から内方に張り出して下方にのびバーナボディ5の中間筒体52に嵌合する内筒部61bとを有する円環状の下ヘッド部材61と、外筒部61aの上端に着座し、下面にバーナボディ5の内側筒体53に嵌合する筒部62aを垂設した円板状の上ヘッド部材62とで構成されている。   The burner head 6 includes an outer cylinder portion 61a that is seated on the upper end portion of the outer cylinder body 51 of the burner body 5, and an intermediate cylinder body 52 of the burner body 5 that protrudes inward from the lower inner periphery of the outer cylinder portion 61a and extends downward. An annular lower head member 61 having an inner cylinder portion 61b fitted to the inner cylinder portion 61b, and a cylindrical portion 62a that is seated on the upper end of the outer cylinder portion 61a and fitted to the inner cylinder body 53 of the burner body 5 are provided vertically on the lower surface. And a disk-shaped upper head member 62.
下ヘッド部材61の外筒部61aには、複数の五徳合致領域6a間の各炎口形成領域に位置させて、外筒部61aの上端面から下方に窪む主炎口7となる溝が周方向の間隔を存して複数形成されている。そして、これらの溝の上端が上ヘッド部材62により閉塞されることで、下ヘッド部材61と上ヘッド部材62との間に主炎口7が画成され、親バーナ混合管4から供給される混合気が主炎口7から噴出するようにしている。尚、燃焼性を良くするため、主炎口7の大きさを2つ置きに小さくしている。 The outer cylindrical portion 61a of the lower head member 61, a groove which is located on the flame hole formation region between a plurality of trivet match area 6a, consisting of an upper end surface of the outer tube portion 61a and the main flame hole 71 recessed downward Are formed at intervals in the circumferential direction. Then, the upper end of these grooves are closed by the upper head member 62, Omoen port 71 is defined between the lower head member 61 and the upper head member 62, supplied from the parent burner mixing tube 4 1 mixture to be is to be ejected from the main flame hole 71. Incidentally, in order to improve the combustion resistance, and to reduce the main flame ports 71 of the size to two every.
外筒部61aには、更に、その下端面から上方に窪む子バーナ炎口7となる溝が周方向の間隔を存して複数形成されている。そして、これら溝の下端が外側筒体51の上端部により閉塞されることで、外側筒体51と下ヘッド部材61との間に子バーナ炎口7が画成され、子バーナ混合管4から供給される混合気が子バーナ炎口7から噴出するようにしている。 The outer cylindrical portion 61a, and is further formed with a plurality of grooves serving as Kubomuko burner flame hole 7 2 upward from the lower end surface to exist in the circumferential direction of the spacing. Then, the lower end of these grooves are closed by the upper end of the outer tubular member 51, made child burner flame hole 7 2 image between the external cylinder body 51 and the lower head member 61, the child burner mixing tube 4 The air-fuel mixture supplied from 2 is ejected from the child burner flame outlet 72.
図2、図3を参照して、上ヘッド部材62の下面には、複数の五徳合致領域6aと同一の周方向部分に位置して、複数の脚片部62bが垂設されており、これら脚片部62bの下端部に、これに内接するようにしてC形リング62cが装着されている。一方、下ヘッド部材61の外筒部61aの内周面上部には、各五徳合致領域6aに位置させて、各脚片部65の挿入溝部61cと、挿入溝部61cの上端部両側から内方に突出する一対の爪部61dとが形成されている。そして、上ヘッド部材62を持ち上げたとき、リング62cが爪部61dに引掛り、リング62cを縮径させない限り上ヘッド部材62を取り外せないようにしている。   2 and 3, a plurality of leg pieces 62 b are suspended from the lower surface of the upper head member 62 in the same circumferential direction as the plurality of virtues matching regions 6 a. A C-shaped ring 62c is attached to the lower end of the leg piece 62b so as to be inscribed therein. On the other hand, in the upper part of the inner peripheral surface of the outer cylinder portion 61a of the lower head member 61, the inner groove portion 61c of each leg piece portion 65 is located inward from both sides of the upper end portion of the insertion groove portion 61c. A pair of claw portions 61d projecting from each other is formed. When the upper head member 62 is lifted, the ring 62c is caught by the claw portion 61d so that the upper head member 62 cannot be removed unless the diameter of the ring 62c is reduced.
図4を参照して、子バーナ炎口7は、混合気の噴出方向がバーナヘッド6の中心を通る径方向、即ち、バーナヘッド6の放射方向に一致するように形成されており、更に、子バーナ炎口7のうちバーナヘッド6の周方向1箇所(本実施形態では、1つの五徳合致領域6aの中央)に形成するものは点火炎口7aになっている。また、外筒部61aの外周面に、点火炎口7aの上方位置からバーナヘッド6の放射方向に突出するターゲット部63を形成し、このターゲット部63に下方から対向するように点火電極8を設置している(図1、図2参照)。そして、点火電極8とターゲット部63との間での火花放電により点火炎口7aに点火して、点火炎口7aから子バーナ炎口7に火移りさせ、主炎口7から混合気を噴出させたときに、子バーナ炎口7から主炎口7に火移りさせるようにしている。 Referring to FIG. 4, the child burner flame hole 7 2, radial ejection direction of the mixture through the center of the burner head 6, i.e., is formed so as to coincide with the radial direction of the burner head 6, further , circumferential one place of the burner head 6 of the child burner flame hole 7 2 (in this embodiment, one central trivet match area 6a) which forms the is in the ignition flame hole 7 2 a. Further, a target portion 63 that protrudes in the radial direction of the burner head 6 from the upper position of the ignition flame port 7 2 a is formed on the outer peripheral surface of the outer cylinder portion 61 a, and the ignition electrode is opposed to the target portion 63 from below. 8 is installed (see FIGS. 1 and 2). Then, the spark outlet 7 2 a is ignited by spark discharge between the ignition electrode 8 and the target portion 63, and the main flame outlet 7 2 a is moved from the ignition flame 7 2 a to the child burner flame 7 2. when jetted air mixture from 1, so as to flame diffusion from the child burner flame hole 7 2 to the main flame hole 71.
図5を参照して、各主炎口7は、混合気噴出方向がバーナヘッド6の放射方向に対し周方向一方(本実施形態では、時計回り方向)に傾斜するように形成されている。これによれば、主炎口7から噴出する混合気の燃焼で形成される火炎が放射方向に対し周方向一方に傾斜し、五徳2に載置する調理容器の底面に対する火炎の接触長さが長くなり、熱効率が向上する。この場合、五徳爪22の長手方向がバーナヘッド6の放射方向に一致していると、各炎口形成領域の周方向一方の端部に形成する主炎口7からのびる火炎が五徳爪22に接触して不完全燃焼する。そこで、五徳爪22の長手方向もバーナヘッド6の放射方向に対し時計回り方向に傾斜させ、火炎が五徳爪22に接触することを防止できるようにしている。 Referring to FIG. 5, the main flame ports 7 1, mixture ejection direction (in the present embodiment, clockwise) one circumferential direction with respect to the radial direction of the burner head 6 is formed so as to be inclined . According to this, the main flame hole 71 flame formed by combustion of the mixture jetted from is inclined in one circumferential direction with respect to the radial direction, the contact length of the flame relative to the bottom surface of the cooking container placed on the trivet 2 Increases the thermal efficiency. In this case, the longitudinal direction of the trivet claws 22 coincides with the radial direction of the burner head 6, flame trivet claws extending from the main flame hole 71 to form the end portion in the circumferential direction one each burner port formation area 22 Incomplete combustion on contact. Therefore, the longitudinal direction of the virtuosity claw 22 is also inclined in the clockwise direction with respect to the radial direction of the burner head 6 so that the flame can be prevented from coming into contact with the virtuosity claw 22.
更に、バーナヘッド6の放射方向に対する主炎口7の混合気噴出方向の傾斜角度が、各炎口形成領域の周方向一方の端部に形成する主炎口7よりも周方向他方(反時計回り方向)の端部に形成する主炎口7の方が小さくなるようにしている。具体的に説明すれば、本実施形態では、各炎口形成領域の周方向一方の端部の主炎口7の前記傾斜角度αを25°、周方向他方の端部の主炎口7の前記傾斜角度βを10°に設定し、各炎口形成領域の周方向一方の端部に形成する主炎口7から周方向他方の端部に形成する主炎口7に向けて各主炎口7の前記傾斜角度が1.5°ずつ順に小さくなるようにしている。尚、バーナヘッド6の放射方向に対する五徳爪22の傾斜角度γは10°に設定されている。 Further, the inclination angle of the air-fuel mixture injection direction of the main flame ports 71 for radiating direction of the burner head 6, the main flame hole 71 other circumferential than that formed at one end a circumferential direction of the burner port formation region ( towards the main flame ports 71 for forming the end portion of the counter-clockwise direction) is set to be smaller. In detail, in the present embodiment, the inclination angle α of 25 ° of the main flame ports 71 in the circumferential direction one end portion of the flame hole formation region, the main flame hole of the other circumferential end portion 7 1 of the inclination angle β is set to 10 °, towards the main flame hole 71 to form a main flame hole 71 to the end portion of the other circumferential forming at one end a circumferential direction of the burner port formed region the inclination angle of each main flame ports 7 1 Te is set to be smaller one by 1.5 °. Incidentally, the inclination angle γ of the virtuosity claw 22 with respect to the radial direction of the burner head 6 is set to 10 °.
ここで、全ての主炎口7の前記傾斜角度を25°に設定すると、図5に仮想線で示す如く、周方向他方の端部の主炎口7´を本実施形態より爪部61dに近接した位置に形成しても、この主炎口7´からのびる火炎(主炎口7´の延長線)とこれに隣接する五徳爪22との間の周方向間隔L´が比較的広くなる。そして、この間隔部分では調理容器を火炎で有効に加熱できないため、調理容器の加熱面積が減少してしまう。尚、バーナヘッド6に近い位置では、五徳爪22の内方への延長線と主炎口7´の延長線との間の周方向間隔が狭くなるが、このような近い位置では火炎が調理容器の底面に触れる程立ち上がらず、熱効率を向上させることができない。 Here, by setting all of the inclination angle of the main flame openings 7 1 to 25 °, as shown in phantom in FIG. 5, the claw portion from the embodiment the main flame ports 71 'of the other circumferential end portion be formed in a position close to 61d, the circumferential spacing L'between the trivet claws 22 adjacent a 'flame extending from (main flame ports 71' the main flame hole 71 extended line of) thereto It becomes relatively wide. And in this space | interval part, since a cooking container cannot be heated effectively with a flame, the heating area of a cooking container will reduce. In the position close to the burner head 6, the circumferential interval between the inward extension line of the five virtue claws 22 and the extension line of the main flame outlet 7 1 ′ becomes narrow. It does not stand up enough to touch the bottom of the cooking container, and the thermal efficiency cannot be improved.
これに対し、本実施形態では、各炎口形成領域の周方向他方の端部の主炎口7の前記傾斜角度βを小さくするため、バーナヘッド6からある程度以上離れて火炎が調理容器の底面に触れる部分において、周方向他方の端部の主炎口7からのびる火炎(主炎口7の延長線)とこれに隣接する五徳爪22との間の周方向間隔Lが上記間隔L´よりも狭くなる。そして、間隔Lが狭くなる分、調理容器の加熱面積が増加し、熱効率が向上する。 In contrast, in the present embodiment, the other circumferential of each burner port forming region to reduce the inclination angle β of the main flame ports 71 end, the flame of the cooking container away than a certain from the burner head 6 in the portion touching the bottom, the circumferential distance L is the distance between the trivet claws 22 adjacent to thereto flame extending from the main flame hole 71 in the other circumferential end portion (an extended line of the main flame ports 7 1) It becomes narrower than L ′. And since the space | interval L becomes narrow, the heating area of a cooking container increases and thermal efficiency improves.
更に、本実施形態では、各主炎口7の前記傾斜角度を、各炎口形成領域の周方向一方の端部に形成する主炎口7から周方向他方の端部に形成する主炎口7に向けて順に小さくしているため、各主炎口7からのびる火炎とこれに隣接する主炎口7からのびる火炎との間の角度が炎口形成領域全体に亘り均等になり、熱効率が可及的に向上する。 Further, in the present embodiment, the main forming the inclination angle of each main flame ports 71, the end portion of the peripheral from the main flame hole 71 to be formed in one end direction of the other circumferential each burner port formed region because toward the burner ports 71 are sequentially smaller, uniform angle throughout the flame hole formation region between the flame and the flame extending from the main flame port 71 adjacent thereto extending from the main flame ports 7 1 And the thermal efficiency is improved as much as possible.
ところで、バーナヘッド6の外周部の周方向1箇所に形成する主炎口7を点火炎口として、点火炎口から噴出する混合気に点火電極により点火することも考えられる。然し、これでは、バーナヘッド6の外周面に、点火電極に対向するターゲット部を、点火炎口からの混合気噴出方向に合わせて、バーナヘッド6の放射方向に対し周方向一方に傾斜した方向に突出するように形成することが必要になり、ターゲット部の加工が面倒になる。 Meanwhile, the main flame hole 71 to be formed in the circumferential direction one position of the outer periphery of the burner head 6 as an ignition flame hole, it is conceivable to ignite by the ignition electrode mixture gas ejected from the ignition flame hole. However, in this case, on the outer peripheral surface of the burner head 6, the target portion opposed to the ignition electrode is inclined in one circumferential direction with respect to the radial direction of the burner head 6 in accordance with the mixture jet direction from the ignition flame port. It is necessary to form the protrusion so as to protrude into the surface, and the processing of the target portion becomes troublesome.
ここで、コンロバーナ3が本実施形態の如く親子バーナである場合、ターンダウン比を大きくする上で、子バーナ炎口7のみから混合気を噴出する弱火時における調理容器の加熱量をできるだけ小さくすることが必要である。そのためには、各子バーナ炎口7を、本実施形態の如く混合気噴出方向がバーナヘッド6の放射方向に一致するように形成した方が良い。そして、バーナヘッド6の周方向1箇所に形成する子バーナ炎口を点火炎口7aとすれば、点火炎口7aからバーナヘッド6の放射方向に混合気が噴出するため、点火電極8に対向するターゲット部63を、バーナヘッド6の外周面の点火炎口7aの上方位置から放射方向に突出するように形成すれば済む。その結果、ターゲット部63の加工が容易になる。 Here, if the stove burner 3 is child burner as in the present embodiment, in order to increase the turn-down ratio, as possible heating of the cooking container at the time of low heat for ejecting the mixture from only child burner flame hole 7 2 It is necessary to make it smaller. To do so, the child burner flame hole 7 2, it is better mixture injection direction as in the present embodiment is formed so as to coincide with the radial direction of the burner head 6. Then, if the child burner flame port formed at one place in the circumferential direction of the burner head 6 is the ignition flame port 7 2 a, the air-fuel mixture is ejected from the ignition flame port 7 2 a in the radial direction of the burner head 6. the target portion 63 that faces the electrode 8, need be formed so as to protrude radially from a position above the pilot flame outlet 7 2 a of the outer peripheral surface of the burner head 6. As a result, the processing of the target portion 63 is facilitated.
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、上記実施形態は、親子バーナから成るコンロバーナ3を備えるガスコンロであるが、子バーナ混合管4及び子バーナ炎口7を有しない通常のコンロバーナを備えるガスコンロにも同様に本発明を適用できる。 As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, the above embodiment is a gas stove comprising a stove burner 3 consisting of parents burner likewise present invention stove with a conventional stove burner having no child burner mixing tube 4 2 and sub burner flame hole 7 2 Can be applied.
1…天板、1a…バーナ用開口、2…五徳、22…五徳爪、3…コンロバーナ、6…バーナヘッド、63…ターゲット部、7…主炎口、7…子バーナ炎口、7a…点火炎口、8…点火電極。 DESCRIPTION OF SYMBOLS 1 ... Top plate, 1a ... Burner opening, 2 ... Gotoku, 22 ... Gotoku nail, 3 ... Conburner, 6 ... Burner head, 63 ... Target part, 7 1 ... Main flame mouth, 7 2 ... Child burner flame mouth, 7 2 a: Ignition flame port, 8: Ignition electrode.

Claims (3)

  1. 天板に開設したバーナ用開口を通して天板上に突出するバーナヘッドを有するコンロバーナと、天板上にバーナ用開口を囲うようにして設置される五徳とを備えるガスコンロであって、
    バーナヘッドの外周部に、五徳の複数の五徳爪と同一方位に位置する複数の五徳合致領域の間の各炎口形成領域に位置させて、混合気が噴出する主炎口が周方向の間隔を存して複数形成され、各主炎口は、混合気噴出方向がバーナヘッドの放射方向に対し周方向一方に傾斜するように形成され、各五徳爪も、その長手方向がバーナヘッドの放射方向に対し周方向一方に傾斜するように形成されるものにおいて、
    バーナヘッドの放射方向に対する主炎口の混合気噴出方向の傾斜角度は、各炎口形成領域の周方向一方の端部に形成する主炎口よりも周方向他方の端部に形成する主炎口の方が小さいことを特徴とするガスコンロ。
    A gas stove comprising a stove burner having a burner head projecting on the top plate through the burner opening established in the top plate, and a virtues installed so as to surround the burner opening on the top plate,
    At the outer peripheral part of the burner head, the main flame outlet from which the air-fuel mixture is ejected is positioned in the circumferential direction between each of the five virtue matching areas located in the same direction as the plural virtue claws of the five virtues. The main flame outlets are formed such that the mixture jet direction is inclined in one circumferential direction with respect to the radial direction of the burner head. In what is formed so as to be inclined in one circumferential direction with respect to the direction,
    The inclination angle of the air-fuel mixture ejection direction of the main flame outlet with respect to the radial direction of the burner head is the main flame formed at the other end in the circumferential direction rather than the main flame mouth formed at one end in the circumferential direction of each flame mouth formation region. Gas stove with a smaller mouth.
  2. 前記各主炎口の前記傾斜角度を、前記各炎口形成領域の周方向一方の端部に形成する主炎口から周方向他方の端部に形成する主炎口に向けて順に小さくすることを特徴とする請求項1記載のガスコンロ。   The inclination angle of each main flame mouth is sequentially reduced from the main flame mouth formed at one end in the circumferential direction of each flame mouth formation region toward the main flame mouth formed at the other edge in the circumferential direction. The gas stove according to claim 1 characterized by these.
  3. 前記コンロバーナは、前記バーナヘッドの外周部に、親バーナ炎口として前記主炎口を形成すると共に、主炎口よりも下方に周方向の間隔を存して子バーナ炎口を複数形成した親子バーナであり、各子バーナ炎口は、混合気噴出方向がバーナヘッドの放射方向に一致するように形成され、バーナヘッドの周方向1箇所に形成する子バーナ炎口を点火炎口とし、バーナヘッドの外周面に、点火炎口の上方位置から放射方向に突出する、点火電極に対向するターゲット部が形成されることを特徴とする請求項1又は2記載のガスコンロ。   The stove burner forms the main flame mouth as a parent burner flame mouth on the outer periphery of the burner head, and forms a plurality of child burner flame mouths with a circumferential interval below the main flame mouth. Each child burner flame mouth is formed such that the mixture jet direction coincides with the radial direction of the burner head, and the child burner flame mouth formed at one place in the circumferential direction of the burner head is an ignition flame mouth, The gas stove according to claim 1 or 2, wherein a target portion facing the ignition electrode is formed on the outer peripheral surface of the burner head so as to project in a radial direction from a position above the ignition flame opening.
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