JP4452879B2

JP4452879B2 - Stove

Info

Publication number: JP4452879B2
Application number: JP2004164813A
Authority: JP
Inventors: 敏宏小林; 勝児玉
Original assignee: パロマ工業株式会社
Priority date: 2004-06-02
Filing date: 2004-06-02
Publication date: 2010-04-21
Anticipated expiration: 2024-06-02
Also published as: JP2005345000A

Description

本発明は、環状に混合気室を形成すると共に、その混合気室の内周面に多数の炎口を形成した内向き炎口バーナを備え、その内向き炎口バーナによって五徳に載置された調理容器を加熱するコンロに関する。 The present invention is provided with an inward flame burner in which an air-fuel mixture chamber is formed in an annular shape and a plurality of flame ports are formed on the inner peripheral surface of the gas mixture chamber, and is mounted on the five victories by the inward flame burner. This relates to a stove for heating a cooking container.

テーブルコンロ等のコンロにおいては、調理容器の底から外側に火炎が溢れ出ることを防止するために、環状に混合気室を形成してその内周面に多数の炎口を形成した内向き炎口バーナが用いられる場合がある。
特に、このようなコンロにあっては、熱効率を向上させるため、混合気室の外周に、空気の吹き出し部を内周側に開口する環状の給気通路を同心で設け、その給気通路に、送風機からの空気を接線方向の運動成分を持つ状態で流入させて、給気通路を旋回させることで、吹き出し部から燃焼用二次空気を渦巻き状に吹き出させて、火炎に旋回流を生じさせるガスコンロが知られている（特許文献１参照）。また、内向き炎口バーナの炎口に、接線方向から傾斜するガイド板を夫々設けて、燃料ガスを渦巻き状に吹き出させることで、火炎に旋回流を生じさせる構造もある。 In a stove such as a table stove, an inward flame in which an air-fuel mixture chamber is formed in an annular shape and a number of flame openings are formed on its inner peripheral surface in order to prevent the flame from overflowing from the bottom of the cooking vessel. A mouth burner may be used.
In particular, in such a stove, in order to improve the thermal efficiency, an annular air supply passage that opens an air blowing portion on the inner peripheral side is provided concentrically on the outer periphery of the air-fuel mixture chamber. The air from the blower is introduced in a state of having a tangential motion component, and the supply passage is swirled, so that the secondary air for combustion is blown out in a spiral shape from the blowout portion, and a swirling flow is generated in the flame. A gas stove is known (see Patent Document 1). There is also a structure in which a guide plate that is inclined from the tangential direction is provided at the flame opening of the inward flame burner, and the fuel gas is blown out in a spiral shape to generate a swirling flow in the flame.

特開２００４−５３１１４号公報JP 2004-53114 A

しかし、コンロには、五徳リングと、その五徳リング上へ放射状に立設されて調理容器が載置される五徳爪とからなる五徳が設けられていることから、この放射状の五徳爪が、燃焼排気の旋回流を横切る抵抗となってしまう。このため、旋回流が遮断されたり、乱流が生じたりして、スムーズな旋回流が得られない結果、旋回流による充分な熱効率向上が得られていなかった。 However, the stove is provided with five virtues consisting of the five virtue rings and the five virtue claws that are radiated on the virtue ring and on which the cooking container is placed. It becomes a resistance across the swirling flow of the exhaust. For this reason, a swirl flow is interrupted or a turbulent flow is generated, and a smooth swirl flow cannot be obtained. As a result, a sufficient improvement in thermal efficiency due to the swirl flow has not been obtained.

そこで、請求項１に記載の発明は、五徳による流体抵抗をできるだけ小さくして、燃焼排気の旋回流による効果的な熱効率の向上が図られるコンロを提供することを目的としたものである。 Accordingly, an object of the present invention is to provide a stove in which the fluid resistance due to the five virtues is made as small as possible, and the effective thermal efficiency is improved by the swirling flow of the combustion exhaust.

上記目的を達成するために、請求項１に記載の発明は、五徳爪における調理容器を支持する水平部を、五徳リングの周方向での幅よりも上下方向の厚みの方が小さく、且つ下面が横断面円弧状に形成される板状として、燃焼排気の旋回流に対して流体抵抗が小さくなるようにしたことを特徴とするものである。 In order to achieve the above object, the invention according to claim 1 is characterized in that the horizontal portion supporting the cooking container in the virtuosity claw is smaller in the vertical thickness than the circumferential width of the virtuosity ring and has a lower surface. There is characterized in that a plate which is formed in cross section arcuate, and so the fluid resistance is small with respect to the swirling flow of combustion exhaust.

請求項１に記載の発明によれば、五徳爪に起因した旋回流の遮断や乱流がなくなり、スムーズな旋回流が得られ、燃焼排気による効果的な熱効率の向上が期待できる。
また、五徳爪の小抵抗形状を効果的な形状で簡単に得ることができる。 According to the first aspect of the present invention, there is no interruption or turbulence of the swirling flow due to the five virtue claws, a smooth swirling flow is obtained, and an effective improvement in thermal efficiency by combustion exhaust can be expected.
In addition , the small resistance shape of the Gotoku nail can be easily obtained with an effective shape.

以下、本発明の実施の形態を図面に基づいて説明する。
《形態１》
図１は、本発明を適用したコンロの一例であるテーブルコンロの説明図で、このテーブルコンロ１には、トッププレート２に形成された開口３内に、内向き炎口バーナ４が配置され、この内向き炎口バーナ４の上方でトッププレート２上に、調理容器Ｐを載置する五徳５がセットされている。
まず内向き炎口バーナ４は、上流端に燃焼用空気を供給するための給気ファン７が接続され、空気供給通路の途中に、燃料ガスを噴出するガスノズル８が設けられるバーナ本体６と、バーナ本体６上に載置されるリング状のバーナヘッド９とからなる。バーナ本体６は、給気ファン７から供給された燃焼用空気とガスノズル８から噴出された燃料ガスとを混合させる混合管部１０と、バーナヘッド９の載置部となると共に環状の混合気室１２を形成する本体部１１とからなる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<< Form 1 >>
FIG. 1 is an explanatory diagram of a table stove that is an example of a stove to which the present invention is applied. In the table stove 1, an inward flame burner 4 is disposed in an opening 3 formed in a top plate 2, Gotoku 5 on which the cooking container P is placed is set on the top plate 2 above the inward flame burner 4.
First, the inward flame burner 4 is connected to an air supply fan 7 for supplying combustion air at the upstream end, and a burner body 6 provided with a gas nozzle 8 for jetting fuel gas in the middle of the air supply passage; It consists of a ring-shaped burner head 9 placed on the burner body 6. The burner body 6 serves as a mixing tube portion 10 for mixing the combustion air supplied from the air supply fan 7 and the fuel gas ejected from the gas nozzle 8, and a mounting portion for the burner head 9, and an annular mixture chamber. 12 and a main body portion 11 that forms 12.

混合管部１０及び本体部１１は、プレス成形された上下の金属板を端部でカシメ結合して形成され、混合管部１０の上端に固着されたフランジ部１３を、本体部１１の下面に形成された連通孔１４の位置でカシメ結合することで、一体に連結されている。また、本体部１１の下面には、載置片１５を介して汁受皿１６が設けられ、本体部１１の内部には、リング状の平板に多数の分布孔１８，１８・・を周方向へ均等に穿設した分布板１７が設けられている。
バーナヘッド９は、多数のスリット状の炎口２０，２０・・を穿設した帯状の金属板を円筒状に形成した炎口形成部１９と、炎口形成部１９の上端に溶接された接合部２１によって結合されるリング状の重し部材２２とからなり、重し部材２２を本体部１１上の所定位置に載置することで、炎口形成部１９が本体部１１と同心でその内壁を形成するように組み付けられる。また、炎口形成部１９の各炎口２０において、上下方向の内縁には、図２にも示すように、旋回流付与手段として、炎口形成部１９の半径方向から所定角度傾斜した案内板２３，２３・・が延設されている。 The mixing tube portion 10 and the main body portion 11 are formed by crimping upper and lower metal plates that are press-formed at the end portions, and a flange portion 13 fixed to the upper end of the mixing tube portion 10 is formed on the lower surface of the main body portion 11. They are integrally connected by caulking and coupling at the position of the formed communication hole 14. Further, a juice receiving tray 16 is provided on the lower surface of the main body 11 via a mounting piece 15, and inside the main body 11, a large number of distribution holes 18, 18. An evenly distributed distribution plate 17 is provided.
The burner head 9 includes a flame mouth forming portion 19 in which a strip-shaped metal plate having a plurality of slit-like flame ports 20, 20... Formed in a cylindrical shape, and a weld welded to the upper end of the flame mouth forming portion 19. A ring-shaped weight member 22 coupled by the portion 21, and the flame port forming portion 19 is concentric with the main body portion 11 by placing the weight member 22 at a predetermined position on the main body portion 11. Are assembled to form Moreover, in each flame mouth 20 of the flame mouth formation part 19, as shown in FIG. 2, a guide plate inclined at a predetermined angle from the radial direction of the flame mouth formation part 19 is provided at the inner edge in the vertical direction as a swirl flow imparting means. 23, 23... Are extended.

そして、五徳５は、図３に示すように、平面方向で放射状に配置される複数のＬ字状の五徳爪２４，２４・・と、その五徳爪２４が立設され、中央に開口が形成された円盤状の五徳リング２５とからなり、五徳リング２５の外周端をトップレート２の開口３の内周縁を覆うように載置することで、内向き炎口バーナ４の本体部１１と同心となる位置にセットされる。五徳爪２４は、調理容器Ｐの底部に当接する水平部２６と、その水平部２６を五徳リング２５上で支持する上下方向の支持部２７とを備える。この水平部２６は、図４にも示す如く、五徳リング２５の周方向での幅よりも上下方向の厚みの方が小さい板状となっており、上面は、調理容器Ｐの底部に密着可能な平坦状で、下面は、中央が最も厚く、そこから幅方向で端部へ行くに従って徐々に薄くなる横断面円弧状に形成されている。 As shown in FIG. 3, the virtues 5 are provided with a plurality of L-shaped virgin claws 24, 24,. The disc-shaped Gotoku ring 25 is placed on the outer peripheral end of the Gotoku ring 25 so as to cover the inner peripheral edge of the opening 3 of the top rate 2, thereby being concentric with the main body 11 of the inward flame burner 4. Is set to the position. The virtuosity claw 24 includes a horizontal portion 26 that comes into contact with the bottom of the cooking container P, and a vertical support portion 27 that supports the horizontal portion 26 on the virtuosity ring 25. As shown in FIG. 4, the horizontal portion 26 has a plate shape in which the thickness in the vertical direction is smaller than the width in the circumferential direction of the gorgeous ring 25, and the upper surface can be in close contact with the bottom of the cooking container P. The flat bottom surface is formed in an arc shape having a cross section that is thickest at the center and gradually becomes thinner from the center toward the end in the width direction.

以上の如く構成されたテーブルコンロ１においては、調理容器Ｐを五徳５の上に載置して、図示しない点火ボタンを押すと、給気ファン７が回転すると共に、ガスノズル８から燃料ガスが噴出され、バーナ本体６の混合管部１０で混合気となって本体部１１内に流入し、分布板１７によって混合気室１２内で均等に拡散した後、バーナヘッド９の各炎口２０から内周側へ噴出される。このとき、各炎口２０に設けた案内板２３によって、混合気はバーナヘッド９の半径方向から傾斜した状態で噴出される。そして、図示しないイグナイタの動作によって点火され、各炎口２０から火炎を形成することになるが、案内板２３により混合気に角度が付されているので、火炎は全体で渦巻き状に形成されて調理容器Ｐの底部を加熱する。なお、内向き炎口バーナ４は、給気ファン７によって必要な燃焼用空気が強制的に供給されるので、内向き炎口バーナ４と調理容器Ｐとの間で二次空気の導入路を確保する必要がなく、内向き炎口バーナ４と調理容器Ｐとの距離を狭くすることができる。よって、エネルギーロスがなくなり、熱効率の向上が得られる。 In the table cooker 1 configured as described above, when the cooking container P is placed on the virtues 5 and an ignition button (not shown) is pressed, the air supply fan 7 rotates and fuel gas is ejected from the gas nozzle 8. After being mixed into the main body 11 through the mixing tube 10 of the burner body 6 and diffused evenly in the air-fuel mixture chamber 12 by the distribution plate 17, the air flows from the flame ports 20 of the burner head 9. It is ejected to the circumference side. At this time, the air-fuel mixture is ejected in a state inclined from the radial direction of the burner head 9 by the guide plates 23 provided at the respective flame ports 20. And, it is ignited by the operation of an igniter (not shown), and flames are formed from the respective flame ports 20, but since the air-fuel mixture is angled by the guide plate 23, the flames are formed in a spiral shape as a whole. The bottom of the cooking container P is heated. In addition, since the required combustion air is forcibly supplied to the inward flame burner 4 by the air supply fan 7, a secondary air introduction path is provided between the inward flame burner 4 and the cooking vessel P. It is not necessary to ensure, and the distance between the inward flame burner 4 and the cooking container P can be reduced. Therefore, there is no energy loss and an improvement in thermal efficiency is obtained.

一方、内向き炎口バーナ４における渦巻き状の火炎により、燃焼排気にも同方向での旋回流が発生することになる。すなわち、燃焼排気は、火炎の形成方向に沿って旋回しながら上昇し、中央付近で調理容器Ｐの底部に到達した後、底部に沿って旋回しながら外周側へ移動して、調理容器Ｐと五徳リング２５との間を通って調理容器Ｐの外周に出て、そのまま側面に沿って上昇する。このような燃焼排気の移動により、調理容器Ｐは効率良く加熱される。
そして、この燃焼排気の旋回移動の際、五徳爪２４を通過することになるが、五徳爪２４の水平部２６は、上下の厚みが薄く、而も下面が円弧状となっているため、燃焼排気は図４の矢印で示すように水平部２６をスムーズに通過でき、五徳爪２４によって旋回流が乱されるようなことがない。 On the other hand, a swirling flow in the same direction is also generated in the combustion exhaust by the spiral flame in the inward flame burner 4. That is, the combustion exhaust rises while turning along the flame forming direction, reaches the bottom of the cooking container P near the center, and then moves to the outer peripheral side while turning along the bottom. It passes between the five virtue rings 25, comes out on the outer periphery of the cooking container P, and ascends along the side face. The cooking container P is efficiently heated by such movement of the combustion exhaust.
When the combustion exhaust gas is swung, it passes through the five virtue claws 24. The horizontal portion 26 of the five virtue claws 24 has a thin upper and lower thickness, and its lower surface has an arc shape. Exhaust gas can smoothly pass through the horizontal portion 26 as indicated by the arrow in FIG. 4, and the swirling flow is not disturbed by the five virtue claws 24.

このように上記形態１のテーブルコンロ１によれば、五徳爪２４を、燃焼排気の旋回流に対して流体抵抗が小さくなる小抵抗形状としたことで、五徳爪２４に起因した旋回流の遮断や乱流がなくなり、スムーズな旋回流が得られ、燃焼排気による効果的な熱効率の向上が期待できる。
特に、調理容器Ｐを支持する水平部２６を、五徳リング２５の周方向での幅よりも上下方向の厚みの方が小さく、且つ下面が横断面円弧状に形成される板状としたことで、五徳爪２４の小抵抗形状を効果的な形状で簡単に得ることができる。 As described above, according to the table stove 1 of the above-described form 1, the virtuosity claw 24 has a small resistance shape that reduces the fluid resistance with respect to the swirling flow of the combustion exhaust, so In addition, there is no turbulent flow and a smooth swirling flow can be obtained, and an effective improvement in thermal efficiency can be expected by combustion exhaust.
In particular, the horizontal portion 26 that supports the cooking container P is formed in a plate shape in which the thickness in the vertical direction is smaller than the width in the circumferential direction of the virtually ring 25 and the lower surface is formed in a cross-sectional arc shape. The small resistance shape of the five virtue claws 24 can be easily obtained with an effective shape.

次に、本発明の他の形態について説明する。なお、内向き炎口バーナを含むコンロの構成は上記形態１と同じであるので、五徳のみについて説明し、上記形態１と同一の構成部には同じ符号を付して重複する説明を省略する。
《形態２》
図５に示す五徳５の五徳爪２８は、調理容器Ｐの底部から所定距離離れて支持部２９に支持される水平部３０に、上面が平坦な複数の当接棒３１，３１・・を上方へ向けて等間隔で立設したもので、各当接棒３１の上面が調理容器Ｐの載置面となる。この形状によって、図６に示すように、調理容器Ｐと水平部３０との間に空間３２，３２が形成されるため、旋回する燃焼排気は、五徳爪２８を横切る際に空間３２を通ることができ、五徳爪２８による流体抵抗が小さくて済む。よって、この形態２においても、五徳爪２８に起因した旋回流の遮断や乱流がなくなり、燃焼排気による効果的な熱効率の向上が期待できる。
なお、ここでは、水平部３０や当接棒３１の断面形状を、長軸が五徳リング２５の周方向に沿った楕円形としている。よって、水平部３０や当接棒３１による流体抵抗も小さくなり、より効果的である。 Next, another embodiment of the present invention will be described. In addition, since the structure of the stove containing an inward flame burner is the same as the said form 1, only 5 virtues are demonstrated, the same code | symbol is attached | subjected to the same component as the said form 1, and the overlapping description is abbreviate | omitted. .
<< Form 2 >>
5, the five virtue claws 28 of the five virtues 5 have a plurality of contact rods 31, 31... With a flat upper surface placed on the horizontal portion 30 supported by the support portion 29 at a predetermined distance from the bottom of the cooking container P. The upper surface of each abutment bar 31 is the mounting surface of the cooking container P. With this shape, as shown in FIG. 6, spaces 32 and 32 are formed between the cooking container P and the horizontal portion 30, so that the swirling combustion exhaust gas passes through the space 32 when crossing the five virtue claws 28. Therefore, the fluid resistance by the five virtue claws 28 can be small. Therefore, also in this form 2, the interruption | blocking of the swirl | flow flow and turbulent flow resulting from the five virtue claws 28 are lose | eliminated, and the improvement of the effective thermal efficiency by combustion exhaust can be anticipated.
Here, the cross-sectional shape of the horizontal portion 30 and the contact rod 31 is an ellipse whose major axis is along the circumferential direction of the virtually ring 25. Therefore, the fluid resistance due to the horizontal portion 30 and the contact rod 31 is also reduced, which is more effective.

《形態３》
図７に示す五徳５の五徳爪３３は、棒状の水平部３４自体を、燃焼排気の旋回流に沿った渦巻き状としたもので、このようにしても、燃焼排気は各五徳爪３３に沿ってスムーズに旋回するため、五徳爪３３による流体抵抗は小さくなる。３５は、各水平部３４の補強のために各水平部３４の中心側端部を連結する連結リングで、水平部３４単独で充分な強度が得られれば、連結リング３５はなくても良い。
よって、この形態３においても、五徳爪３３に起因した旋回流の遮断や乱流がなくなり、燃焼排気による効果的な熱効率の向上が期待できる。 << Form 3 >>
The five virtue claws 33 of the five virtues 5 shown in FIG. 7 are obtained by making the bar-shaped horizontal portion 34 itself spirally along the swirl flow of the combustion exhaust gas. Therefore, the fluid resistance by the five virtue claws 33 is reduced. Reference numeral 35 denotes a connection ring for connecting the center side end portions of the horizontal portions 34 for reinforcement of the horizontal portions 34, and the connection rings 35 may be omitted as long as the horizontal portions 34 alone have sufficient strength.
Therefore, also in this form 3, the interruption | blocking of the swirling flow and turbulent flow resulting from the five virtue claws 33 disappear, and the improvement of the effective thermal efficiency by combustion exhaust can be expected.

なお、五徳爪の小抵抗形状としては、形態１では、円弧状以外に、三角形や台形等、燃焼排気の旋回流に対して流体抵抗が小さくなる形状であれば、適宜変更可能である。同様に、形態２では、当接棒の数や間隔は変更しても良いし、水平部や当接棒の断面形状も、楕円形以外に長円形や流線形、菱形等も採用できる。また、水平部や当接棒を板体で折曲形成しても差し支えない。さらに、従来の縦向きの五徳爪に、旋回流の通過を許容する切欠きや透孔を形成しても、流体抵抗を減少させることができる。
一方、形態３では、渦巻き状の水平部を棒状とする構造に限らず、板体としても良いし、内周側と外周側とで断続的に水平部を配置しても良い。
また、各形態の組み合わせ、例えば形態１や形態２に示した水平部を形態３のような渦巻き状とすれば、両者の相乗効果で流体抵抗のさらなる減少が期待できる。 In addition to the arc shape, the small resistance shape of the five virtue claws can be appropriately changed as long as it has a shape that reduces the fluid resistance against the swirling flow of combustion exhaust gas, such as a triangle or a trapezoid. Similarly, in the second embodiment, the number and interval of the contact bars may be changed, and the cross section of the horizontal portion and the contact bars may be oval, streamline, rhombus, etc. in addition to the ellipse. In addition, the horizontal portion and the contact rod may be bent with a plate. Furthermore, even if a notch or a through-hole allowing the passage of a swirling flow is formed in the conventional vertical virtuosity claw, the fluid resistance can be reduced.
On the other hand, in the third aspect, the structure is not limited to a structure in which the spiral horizontal portion is a rod, but may be a plate body, or the horizontal portion may be intermittently disposed on the inner peripheral side and the outer peripheral side.
Moreover, if the horizontal part shown to the combination of each form, for example, form 1 or form 2 is made into the spiral shape like form 3, further reduction of fluid resistance can be anticipated by the synergistic effect of both.

そして、バーナの形状や旋回流付与手段も上記形態に限らず、例えば案内板は、炎口の形状や位置に合わせて形状や長さ、傾斜角度は適宜変更可能である。また、コンロの種類もテーブルコンロに限らず、強制燃焼式の内向き炎口バーナを備えたものであれば、ビルトインコンロ等の他のコンロにも採用可能である。
Further, the shape of the burner and the swirling flow imparting means are not limited to the above forms, and for example, the shape, length, and inclination angle of the guide plate can be appropriately changed according to the shape and position of the flame outlet. Also, the type of the stove is not limited to the table stove, and any other stove such as a built-in stove can be used as long as it has a forced combustion type inward flame burner.

テーブルコンロの説明図である。It is explanatory drawing of a table stove. バーナヘッドの炎口部分の拡大図である。It is an enlarged view of the flame part of a burner head. 形態１の五徳の説明図である。It is explanatory drawing of five virtues of form 1. 燃焼排気の五徳爪の通過状態を示す説明図である。It is explanatory drawing which shows the passage state of the 5 vices claw of combustion exhaust. 形態２の五徳の説明図である。It is explanatory drawing of the five virtue of form 2. 五徳爪の説明図である。It is explanatory drawing of five virtue claw. 形態３の五徳の説明図である。It is explanatory drawing of the five virtue of form 3.

Explanation of symbols

１‥テーブルコンロ、２‥トッププレート、４‥内向き炎口バーナ、５‥五徳、６‥バーナ本体、７‥給気ファン、９‥バーナヘッド、１０‥混合管部、１１‥本体部、１２‥混合気室、２０‥炎口、２３‥案内板、２４，２８，３３‥五徳爪、２５‥五徳リング、２６，３０，３４‥水平部、Ｐ‥調理容器。
DESCRIPTION OF SYMBOLS 1 ... Table cooker, 2 ... Top plate, 4 ... Inward flame burner, 5 ... Gotoku, 6 ... Burner body, 7 ... Air supply fan, 9 ... Burner head, 10 ... Mixing pipe part, 11 ... Body part, 12 ... Mixture chamber, 20. Flame port, 23. Guide plate, 24, 28, 33...

Claims

An inward flame burner in which a number of flame openings are formed on the inner circumferential surface of the annular mixture chamber, an air supply fan for forcibly supplying combustion air to the inward flame burner, A swirl flow imparting means for imparting a swirl flow to the combustion exhaust of the direction-flame burner, and a plurality of five virtue claws provided on the upper side of the inward flame burner, on which the cooking container is placed, are erected radially on the gortoku ring. A stove with the five virtues
The horizontal portion supporting the cooking container in the virtuosity claw is a plate shape in which the thickness in the vertical direction is smaller than the width in the circumferential direction of the virtuosity ring, and the lower surface is formed in a cross-section arc shape, Stove, characterized in that as the fluid resistance is small with respect to the swirling flow of combustion exhaust.