JP3709047B2 - Gas burner - Google Patents

Gas burner Download PDF

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Publication number
JP3709047B2
JP3709047B2 JP11425997A JP11425997A JP3709047B2 JP 3709047 B2 JP3709047 B2 JP 3709047B2 JP 11425997 A JP11425997 A JP 11425997A JP 11425997 A JP11425997 A JP 11425997A JP 3709047 B2 JP3709047 B2 JP 3709047B2
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JP
Japan
Prior art keywords
burner
outer peripheral
flame hole
flame
gas burner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP11425997A
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Japanese (ja)
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JPH10288313A (en
Inventor
敏道 小原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP11425997A priority Critical patent/JP3709047B2/en
Publication of JPH10288313A publication Critical patent/JPH10288313A/en
Application granted granted Critical
Publication of JP3709047B2 publication Critical patent/JP3709047B2/en
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Description

【0001】
【産業上の利用分野】
本発明は、ガスレンジ等に使用される水平リング状のガスバーナに関するものである。
【0002】
【従来の技術】
この種のガスバーナは、図2に示すように、バーナ本体1の外周面に主炎孔2が設けられ、火炎は炎孔2からほぼ水平方向に噴出するようになっている。この構成によれば、バーナの上面に炎孔を設けたものに比し、煮こぼれ汁や埃によって炎孔2が詰まるおそれがなく、また二次空気が十分に供給されるために、不完全燃焼のおそれがないという利点がある反面、次に述べるような欠点があった。
【0003】
【発明が解決しようとする課題】
すなわち図2のように、バーナ本体1の外周面に主炎孔2を有する水平リング状バーナにおいては、火炎が鍋底の周辺部分に当たり、鍋底の中心部分では比較的低温のガスが滞留する上に、火炎の噴出方向が鍋底面に対してほぼ平行であるために、鍋底の周辺部分においても、鍋底面付近には粘性によりほとんど静止している空気の層が存在し、そのために熱伝達の効率がきわめて低いという欠点があった。
【0004】
またその対策として図3に示すように、火炎を鍋底の中央へ集中させたのち鍋底面に沿って周囲へ拡散するように、バーナ本体1の内周面に炎孔2を設けた所謂内向き炎バーナが開発されている。しかしこの内向き炎バーナにおいては、バーナ本体1の中央の吹き抜け空間3から火炎が下方へ溢れ易いという問題がある上に、二次空気が不足して不完全燃焼を起こし易いという欠点があった。
【0005】
本発明は上述のような問題点を解消し、強火時にも二次空気の不足を来すおそれのない外向き炎バーナにおいて、火炎をできるだけ鍋底の中心部寄りに集中させて熱効率を向上させることができ、しかもその際に煮こぼれ汁等で炎孔が閉塞したり、リフティングを起こしたりするおそれのないこの種のバーナの構造を提供することを目的とするものである。
【0006】
【課題を解決するための手段】
本発明によるガスバーナは、図1に示すように、一次空気率を理想混合比の60〜90%まで高めた水平リング状バーナにおいて、バーナ本体1の外周壁に主炎孔群2を設け、各主炎孔2の中心軸を水平面に対して55〜65度傾斜させたものであって、火炎をできるだけ直角に近い傾斜角で鍋底に衝突させることにより、従来火炎と鍋底面との間に介在して熱伝導を妨げていた低温の停滞層を排除し、高温排気を直接鍋底と接触させて熱効率を向上させた点に特徴を有するものである。
【0007】
【発明の実施の形態】
図1は本発明の一実施例を示したもので、リング状のバーナ本体1の外周壁には主炎孔群2が設けられており、これらの主炎孔2はその中心軸が水平面に対して55〜65度、本実施例では約60度に傾斜させて形成されている。バ−ナ本体1は、上面の開口したリング状の器体5と、この器体5の上面開口に被着されたリング状の蓋体6とで構成されており、炎孔2は器体5の外周壁上端に形成された傾斜面と、蓋体6の外周部の傾斜面に突設された歯状凸部7とによって形成されている。また蓋板6の外周縁より水平方向に突設された鍔状部8が、各主炎孔2から噴出するガスの進路内に張り出し、煮こぼれ汁が炎孔2に侵入するのを防止すると同時に、噴出ガスの一部に乱流を起こすことによって、保炎を行っているのである。
【0008】
炎孔2を水平面に対して55〜65度傾斜させたのは、これ以下では鍋底に張り付いて停滞している低温空気層を吹き飛ばすだけの衝撃力が得られないからである。なお65度を超えると実質上炎孔2を本体1の外周の垂直面に開口させることが困難となるからである。このようにして火炎を鍋底に衝突させることにより、従来鍋底面の近傍に粘性によって停滞し熱伝導を妨げていた低温の空気の層が吹き飛ばされ、高温排気が直接鍋底と接触して熱効率を向上させることができるのである。
【0009】
また通常は火炎が狭い範囲に集中するほど二次空気が不足して不完全燃焼し易くなるが、本発明構成では混合管4を太くしたり炎孔面積を大きくするなどして一次空気率を60〜90%まで高めており、従って二次空気の供給が不足するおそれはない。また一次空気率が高くなればなるほど、安定燃焼域が狭くなってリフティングが起こり易くなるが、本発明構成では炎孔2の先端部分が垂直面に斜めに開口し、炎孔が噴出方向に沿って一定の幅を持っている上に、蓋板6の外周縁から水平方向に突設された鍔状部8が、炎孔2から噴出するガスの進路内に張り出して、炎孔2の先端から離れようとする火炎に対して保炎を行っているために、リフティングが有効に防止されているのである。
【0010】
【実施例】
実際に口径28cmの鍋を用いてJIS規格に基づくテスト方法によりテストした結果、吹き出し角度(水平面に対する傾斜角)15℃の従来バーナの熱効率が47.5%であったのに対し、本発明バーナでは54.0%に向上した。また火炎を立ち上げたために、外部へ放射される輻射熱が低減され、バーナ側方15cmの黒壁面の温度が10℃以上低下した。更に機器背面15cmにおける壁面温度上昇も5℃以上低下した。これにより厨房環境温度の低下及び壁面材の炭化防止による火災予防効果が確認できた。
【0011】
【発明の効果】
本発明によれば上述のように、主炎孔2を水平面に対して55〜65度傾斜させることにより、従来鍋底面の近傍に停滞して熱伝導を妨げていた低温の空気の層が吹き飛ばすことができたので、高温排気を直接鍋底と接触させて熱効率を向上させることができ、しかもその際に二次空気が不足して不完全燃焼を起こしたり、あるいはリフティングを起こしたりするおそれがないという利点があり、また蓋板6の外周縁から水平方向に鍔状部8を突設させることによって、保炎と同時に煮こぼれ汁が炎孔2内に侵入するのを防止することができるという利点があり、更に厨房環境の改善等の効果も期待し得るという利点がある。
【図面の簡単な説明】
【図1】本発明の一実施例を示す縦断面図。
【図2】従来例の縦断面図。
【図3】他の従来例の切欠斜視図。
【符号の説明】
1 バーナ本体
2 主炎孔
3 吹き抜け空間
4 混合管
5 器体
6 蓋体
7 歯状凸部
8 鍔状部
[0001]
[Industrial application fields]
The present invention relates to a horizontal ring-shaped gas burner used for a gas range or the like.
[0002]
[Prior art]
As shown in FIG. 2, this type of gas burner is provided with a main flame hole 2 on the outer peripheral surface of the burner body 1, and the flame is ejected from the flame hole 2 in a substantially horizontal direction. According to this configuration, the flame hole 2 is not clogged with boiling juice or dust, and the secondary air is sufficiently supplied as compared with the case where the flame hole is provided on the upper surface of the burner. While there is an advantage that there is no fear of combustion, there are the following disadvantages.
[0003]
[Problems to be solved by the invention]
That is, as shown in FIG. 2, in the horizontal ring burner having the main flame hole 2 on the outer peripheral surface of the burner body 1, the flame hits the peripheral portion of the pan bottom, and relatively low temperature gas stays in the central portion of the pan bottom. Because the flame ejection direction is almost parallel to the bottom of the pan, there is a layer of air that is almost stationary due to the viscosity near the bottom of the pan, and therefore the efficiency of heat transfer. However, there was a drawback that it was extremely low.
[0004]
As a countermeasure, as shown in FIG. 3, the flame is concentrated on the center of the pan bottom and then diffused along the bottom of the pan so that the flame hole 2 is provided on the inner peripheral surface of the burner body 1 so-called inward. A flame burner has been developed. However, this inward flame burner has the problem that the flame tends to overflow downward from the blow-through space 3 in the center of the burner body 1, and also has the disadvantage that secondary air is insufficient and incomplete combustion is likely to occur. .
[0005]
The present invention eliminates the above-mentioned problems, and improves the thermal efficiency by concentrating the flame as close to the center of the pan bottom as possible in an outward flame burner that does not cause a shortage of secondary air even during a strong fire. The object of the present invention is to provide a structure of this type of burner that does not cause the risk of clogging of the flamehole or lifting due to boiling juice.
[0006]
[Means for Solving the Problems]
As shown in FIG. 1, the gas burner according to the present invention is provided with a main flame hole group 2 on the outer peripheral wall of the burner body 1 in a horizontal ring burner in which the primary air ratio is increased to 60 to 90% of the ideal mixing ratio. The central axis of the main flame hole 2 is inclined by 55 to 65 degrees with respect to the horizontal plane, and the flame is caused to collide with the bottom of the pan at an inclination angle as close to a right angle as possible, thereby interposing between the conventional flame and the bottom of the pan. Thus, the low temperature stagnant layer that hinders heat conduction is eliminated, and the high temperature exhaust is brought into direct contact with the bottom of the pan to improve the thermal efficiency.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of the present invention. A main flame hole group 2 is provided on the outer peripheral wall of a ring-shaped burner body 1, and the central axis of these main flame holes 2 is a horizontal plane. On the other hand, it is inclined by 55 to 65 degrees , and in this embodiment, by approximately 60 degrees. The burner body 1 is composed of a ring-shaped vessel body 5 having an upper surface opened and a ring-shaped lid body 6 attached to the upper surface opening of the vessel body 5. 5 is formed by an inclined surface formed at the upper end of the outer peripheral wall 5 and a tooth-like convex portion 7 protruding from the inclined surface of the outer peripheral portion of the lid 6. Moreover, when the bowl-shaped part 8 projected in the horizontal direction from the outer peripheral edge of the cover plate 6 protrudes into the path of the gas ejected from each main flame hole 2, the boiled juice is prevented from entering the flame hole 2. At the same time, flame is maintained by causing turbulent flow in a part of the jet gas.
[0008]
The flame hole 2 is inclined 55 to 65 degrees relative to the horizontal plane, this Hereinafter Ru der do not impact force just blow cold air layer is obtained that stagnant stuck to pan bottom. This is because the substantially upper burner ports 2 and it becomes difficult to open in the vertical face of the outer periphery of the main body 1 exceeds a contact 65 degrees. By causing the flame to collide with the bottom of the pan in this way, a layer of low-temperature air that has been stagnant by the viscosity and hindered heat conduction in the vicinity of the bottom of the pan has been blown away, and high-temperature exhaust directly contacts the bottom of the pan to improve thermal efficiency. It can be made.
[0009]
Normally, the more concentrated the flame is in a narrow range, the more the secondary air becomes deficient and the incomplete combustion is likely to occur. However, in the configuration of the present invention, the primary air ratio is increased by making the mixing tube 4 thicker or increasing the flame hole area. Therefore, there is no possibility that the supply of secondary air will be insufficient. In addition, the higher the primary air ratio, the narrower the stable combustion region and the more likely lifting occurs. However, in the configuration of the present invention, the tip of the flame hole 2 opens obliquely in the vertical plane, and the flame hole extends along the ejection direction. In addition, a flange-like portion 8 that protrudes in the horizontal direction from the outer periphery of the cover plate 6 protrudes into the path of the gas ejected from the flame hole 2 and has a tip of the flame hole 2. Lifting is effectively prevented because the flame is held against the flame that is about to leave.
[0010]
【Example】
As a result of actually testing by a test method based on JIS standard using a pan having a diameter of 28 cm, the thermal efficiency of a conventional burner having a blowing angle (inclination angle with respect to a horizontal plane) of 15 ° C. was 47.5%. Then, it improved to 54.0%. Moreover, since the flame was started, the radiant heat radiated to the outside was reduced, and the temperature of the black wall surface 15 cm on the side of the burner was lowered by 10 ° C. or more. Furthermore, the wall temperature rise at the back of the device 15 cm also decreased by 5 ° C. or more. Thereby, the fire prevention effect by the reduction of kitchen environment temperature and the carbonization prevention of the wall material was confirmed.
[0011]
【The invention's effect】
According to the present invention, as described above, by inclining the main flame hole 2 by 55 to 65 degrees with respect to the horizontal plane, the layer of low-temperature air that has been stagnant in the vicinity of the bottom of the pan and hinders heat conduction is blown away. As a result, it is possible to improve the thermal efficiency by bringing the hot exhaust directly into contact with the bottom of the pan, and there is no risk of incomplete combustion or lifting due to insufficient secondary air. In addition, by projecting the bowl-shaped portion 8 in the horizontal direction from the outer peripheral edge of the cover plate 6, it is possible to prevent the spilled juice from entering the flame hole 2 simultaneously with the flame holding. There is an advantage, and there is also an advantage that effects such as improvement of the kitchen environment can be expected.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a conventional example.
FIG. 3 is a cutaway perspective view of another conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Burner main body 2 Main flame hole 3 Blow-through space 4 Mixing pipe 5 Body 6 Lid 7 Tooth-shaped convex part 8 Gutter-shaped part

Claims (3)

一次空気率を理想混合比の60〜90%まで高めた水平リング状バーナにおいて、主炎孔をバーナ本体の外周壁の垂直面に開口させると共に、各主炎孔の中心軸を水平面に対して55〜65度傾斜させたことを特徴とするガスバーナ。In a horizontal ring burner in which the primary air ratio is increased to 60 to 90% of the ideal mixing ratio, the main flame holes are opened in the vertical surface of the outer peripheral wall of the burner body, and the central axis of each main flame hole is set with respect to the horizontal plane A gas burner inclined by 55 to 65 degrees . 上記主炎孔群が、上面の開口したリング状の器体の外周壁上端に形成された傾斜面と、該器体に被着されるリング状の蓋体の外周部の傾斜面に突設された歯状凸部とによって形成されていることを特徴とする請求項1記載のガスバーナ。The main flame hole group protrudes from an inclined surface formed at the upper end of the outer peripheral wall of the ring-shaped container having an open upper surface, and an inclined surface of the outer peripheral part of the ring-shaped lid attached to the container. The gas burner according to claim 1, wherein the gas burner is formed by a toothed convex portion. 上記蓋板の外周縁より水平方向に突設された鍔状部が、各主炎孔から噴出するガスの進路内に張り出していることを特徴とする請求項2記載のガスバーナ。3. The gas burner according to claim 2, wherein a flange-like portion protruding in the horizontal direction from the outer peripheral edge of the lid plate projects into the course of the gas ejected from each main flame hole.
JP11425997A 1997-04-16 1997-04-16 Gas burner Expired - Lifetime JP3709047B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11425997A JP3709047B2 (en) 1997-04-16 1997-04-16 Gas burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11425997A JP3709047B2 (en) 1997-04-16 1997-04-16 Gas burner

Publications (2)

Publication Number Publication Date
JPH10288313A JPH10288313A (en) 1998-10-27
JP3709047B2 true JP3709047B2 (en) 2005-10-19

Family

ID=14633320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11425997A Expired - Lifetime JP3709047B2 (en) 1997-04-16 1997-04-16 Gas burner

Country Status (1)

Country Link
JP (1) JP3709047B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100500384B1 (en) * 2002-04-18 2005-07-14 오상묵 A burner for destruction by fire of gas

Also Published As

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JPH10288313A (en) 1998-10-27

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