JP3790184B2

JP3790184B2 - Glass top stove

Info

Publication number: JP3790184B2
Application number: JP2002100353A
Authority: JP
Inventors: 秀樹重野
Original assignee: Rinnai Corp
Current assignee: Rinnai Corp
Priority date: 2002-04-02
Filing date: 2002-04-02
Publication date: 2006-06-28
Anticipated expiration: 2022-04-02
Also published as: CN1325842C; TWI233975B; JP2003294249A; CN1448659A; KR20030079668A; TW200304997A

Description

【０００１】
【発明の属する技術分野】
本発明は、周方向に間隔を存して配置した複数の五徳爪を備えるコンロ用五徳を用いたガラストップコンロに関する。
【０００２】
【従来の技術】
従来、特開昭５８−１０２０３２号公報により、五徳爪の上縁より下方で、且つ、五徳爪の脚部下端より上方に位置させて、径方向に幅広の環状仕切板を設け、複数の五徳爪をその脚部において仕切板に挿通固定したコンロ用五徳が知られている。この五徳は、バーナからの燃焼排気の流れとバーナに向かう二次空気の流れとを仕切板により上下に仕切ることができ、バーナの燃焼性が向上する利点がある。
【０００３】
尚、上記五徳は、板金製の天板に形成した開口に装着する汁受け皿の内周にバーナを臨ませる通常のコンロで使用されるものであるが、最近は、天板をガラス製とし、この天板に形成した開口にバーナを臨ませるようにしたガラストップコンロも開発されている。ガラストップコンロは、全面フラットで見栄えが良く、掃除もし易いため、人気が出てきている。
【０００４】
【発明が解決しようとする課題】
上記従来の五徳は、仕切板が大きく重量が増すと共に、煮こぼれや調理物が仕切板に落下付着し易く、而も、仕切板は高温になるため、煮こぼれや調理物が仕切板に焼き付き、掃除が面倒になる。また、通常のコンロで上記従来の五徳を使用すると、仕切板で画成される二次空気通路の出口が汁受け皿上に位置することになる。この部分は、バーナに近く輻射熱で相当高温になり、煮こぼれや調理物等の落下物が焼け焦げになって堆積し易い部分であり、このようなものが二次空気通路の出口部分に存在することにより、バーナの直前で二次空気の流れが乱されて、バーナに対する二次空気の供給にムラを生じ、燃焼性に悪影響が及ぶ。
また、ガラストップコンロで従来の五徳を用いることも考えられるが、この五徳は仕切板の存在で鈍重な感じになり、ガラストップコンロの持つスマートな外観を損ない、見栄えが悪くなる。
【０００５】
本発明は、以上の点に鑑み、バーナの燃焼性向上の効果を損なうことなく、メンテナンス性および外観性を向上し得るようにした小型軽量のコンロ用五徳を用いたガラストップコンロを提供することを課題としている。
【０００６】
【課題を解決するための手段】
上記課題を解決するために、天板をガラス製とし、この天板に形成した開口にバーナを臨ませるガラストップコンロであって、前記天板上に、前記バーナを囲うようにして、周方向に間隔を存して配置した複数の五徳爪を備えるコンロ用五徳を載置するものにおいて、本発明によれば、五徳爪の上縁より下方で、且つ、五徳爪の脚部下端より上方に位置させて、幅方向を上下方向に沿わせた帯状の板材で形成される環状枠を設け、この環状枠に前記複数の五徳爪を各五徳爪の脚部において固定して前記五徳を構成すると共に、環状枠の上縁と五徳爪の上縁との間の距離を燃焼排気の排出に必要充分な値に設定している。
【０００８】
本発明の五徳は、環状枠の上縁と調理器の底面との間の空隙の幅、即ち、環状枠の上縁と五徳爪の上縁との間の距離が上記の如く燃焼排気の排出に必要充分な値に設定されるため、燃焼排気は環状枠の下方に迂回することなく環状枠の上縁と調理器の底面との間の空隙からスムーズに排出される。そして、環状枠が上下方向の幅を持つため、従来のような径方向の広がりを持つ仕切板が無くても、バーナからの燃焼排気の流れとバーナに向かう二次空気の流れとを上下に仕切ることができる。特に、ガラストップコンロでは、天板が汁受け皿による窪みを有することなくバーナ部分までフラットになっているため、環状枠の下方空間から流入する二次空気が天板に沿ってバーナ部分までスムーズに流れ、従来のような仕切板付きの五徳を用いなくても、バーナの燃焼性が向上する。更に、バーナ炎からの輻射熱がガラス製天板を透過して、天板が比較的低温に維持されることから、天板での焼き焦げの堆積が抑制され、これらの堆積による二次空気流の乱れで燃焼性に悪影響が及ぶことも防止される。
【０００９】
また、環状枠は、上下方向から見て帯状板材の板厚分の幅で環状に存在するだけであるため、煮こぼれや調理物が付着しにくく、更に、従来のようなバーナに向けて径方向内方に延在する仕切板と異なり加熱されにくく、その結果、煮こぼれや調理物の焼き付きが効果的に防止され、五徳の掃除が容易になる。更に、仕切板を用いる従来の五徳に比し軽量になると共に、五徳が軽快な感じになり、ガラストップコンロに用いても見栄えを損なうことはない。
【００１０】
【発明の実施の形態】
図１はガラストップコンロを示している。図中１はガラス製の天板であり、この天板１に形成した開口２にバーナ３を臨ませている。
【００１１】
バーナ３は、混合管部４ａと環状のバーナヘッド部４ｂとを有する板金製のバーナ本体４と、バーナヘッド部４ｂに載置される環状のバーナキャップ５とで構成されており、バーナヘッド部４ｂを天板１の開口２の周縁部に装着した保護リング６に嵌挿して天板１上に突出させている。そして、バーナキャップ５の下面外周部の歯形により多数の炎孔５ａを形成し、バーナヘッド部４ｂから炎孔５ａを介して噴出するガスにより外向きの炎が形成されるようにしている。尚、バーナキャップ５には、上向きに開口する小炎孔５ｂが形成されると共に、バーナキャップ５の内径部を上方から覆って煮こぼれの落下を防止する傘部５ｃが一体成形されている。
【００１２】
また、天板１上には、バーナ３を囲うようにして、五徳７が載置されている。五徳７は、図２に示す如く、周方向に間隔を存して配置した複数（図示例では６個）の五徳爪８を備えている。各五徳爪８は、外方の脚部８ａと、脚部８ａの上端から内方にのびる調理器Ｐ用の支持爪部８ｂと、脚部８ａの下端から内方にのびる天板１に対する着座部８ｃとを有する略コ字状に形成されている。五徳７は、更に、幅方向を上下方向に沿わせた帯状の板材で形成される環状枠９を備えている。環状枠９は、五徳爪８の上縁（支持爪部８ｂの上縁）より下方で、且つ、脚部８ａの下端（着座部８ｃの下縁）より上方に位置するように配置されており、各五徳爪８をその脚部８ａにおいて環状枠９に固定している。尚、本実施形態では、脚部８ａの外縁に凹欠部８ｄを形成し、凹欠部８ｄに環状枠９を嵌め込んだ状態で脚部８ａを環状枠９に溶接固定している。
【００１３】
五徳７に調理器Ｐを載置してバーナ３に着火すると、バーナ３からの燃焼排気が調理器Ｐの底面に沿って外方に流れ、図１の矢印ａの如く環状枠９の上縁と調理器Ｐの底面との間の空隙から外部に排出される。また、バーナ３には、バーナヘッド部４ｂ及びバーナキャップ５の内径部を通して内方から矢印ｂの如く二次空気が供給されると共に、環状枠９の下縁と天板１との間の空隙を通して外方からも矢印ｃの如く二次空気が供給される。
【００１４】
ここで、環状枠９の上縁と調理器Ｐの底面との間の空隙の幅、即ち、環状枠９の上縁と五徳爪８の上縁との間の距離Ｌ１を燃焼排気の排出に必要充分な値に設定しておけば、燃焼排気は環状枠９の下方に迂回することなく環状枠９の上縁と調理器Ｐの底面との間の空隙からスムーズに排出される。そして、環状枠９は上下方向の幅を持つため、環状枠９の下縁と天板１との間の空隙を通して二次空気が燃焼排気の流れから仕切られた状態で流入する。そして、天板１は通常のコンロのような汁受け皿による窪みを有することなくバーナ部分までフラットになっているため、環状枠９の下縁と天板１との間の空隙を通して流入する二次空気は天板１に沿ってバーナ部分までスムーズに流れ、バーナ３の燃焼性が向上する。更に、天板１はガラス製であって、バーナ炎からの輻射熱が天板１を透過して、天板１が比較的低温に維持されることから、天板１における焼き焦げの堆積が抑制され、これらの堆積による二次空気流の乱れで燃焼性に悪影響が及ぶことも防止される。
【００１５】
また、環状枠９は、上下方向から見て帯状板材の板厚分の幅で環状に存在するだけであるため、煮こぼれや調理物が付着しにくく、更に、従来のようなバーナに向けて径方向内方に延在する仕切板と異なり加熱されにくく、その結果、煮こぼれや調理物の焼き付きが効果的に防止され、五徳７の掃除が容易になる。更に、仕切板を用いる従来の五徳に比し軽量になると共に、五徳７が軽快な感じになり、ガラストップコンロに用いても見栄えを損なうことはない。
【００１６】
尚、燃焼排気の流れと二次空気の流れとの仕切性能を良好にするには、環状枠９の上下幅Ｌ２を、環状枠９の上縁と五徳爪８の上縁との間の距離Ｌ１の０．４〜１．５倍に設定することが望ましい。また、環状枠９の下縁と脚部８ａの下端との間の距離Ｌ３は、外方からの二次空気の必要供給量に応じて変動するが、本実施形態のように内方からも二次空気を供給する場合には、Ｌ１の０．３倍以上に設定することが望ましい。
【００１７】
以上、バーナ３として外向きの炎を形成する外炎式バーナを用いたガラストップコンロについて説明したが、内向きの炎を形成する内炎式バーナを用いるガラストップコンロにおいても同様に本発明を適用できる。
【００１８】
【実施例】
図１に示したガラストップコンロにおいて、環状枠９を備える五徳（本発明実施品）と環状枠の無い五徳（比較品）とを用いて燃焼試験を行った。実施品の寸法は、環状枠９の外径がφ１９０ｍｍ、Ｌ１が１３ｍｍ、Ｌ２が１１ｍｍ、Ｌ３が１７ｍｍである。試験結果は下表の通りであった。
【００１９】
【表１】

【００２０】
この表から明らかなように、本発明実施品では、バーナ３の燃焼性が改善されてＣＯの発生量が減少すると共に、熱効率も向上する。
【図面の簡単な説明】
【図１】本発明に係わるガラストップコンロの一例の要部の断面図
【図２】図１のコンロで使用した五徳の平面図
【符号の説明】
１…天板２…開口３…バーナ７…五徳８…五徳爪８ａ…脚部９…環状枠[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a glass top stove with stove five virtues comprising a plurality of trivet claws arranged at intervals in the circumferential direction.
[0002]
[Prior art]
Conventionally, according to Japanese Patent Application Laid-Open No. 58-102032, a circular partition plate that is wide in the radial direction is provided below the upper edge of the virgin claw and above the lower end of the leg portion of the virgin claw, and a plurality of virtues A cooker for virtue with a nail inserted into a partition plate at its leg is known. This virtues can partition the flow of combustion exhaust from the burner and the flow of secondary air toward the burner up and down with a partition plate, and has the advantage of improving the burnability of the burner.
[0003]
In addition, the above five virtues are used in a normal stove that faces the burner on the inner periphery of the juice tray attached to the opening formed in the top plate made of sheet metal, but recently, the top plate is made of glass, A glass top stove with a burner facing the opening formed in the top plate has also been developed. Glass top stoves are gaining in popularity because they are flat on the whole surface and easy to clean.
[0004]
[Problems to be solved by the invention]
In the above conventional virtues, the partition plate is large and increases in weight, and the spilled food and food easily fall and adhere to the partition plate. , Cleaning becomes troublesome. Moreover, when the above-mentioned conventional virtues are used with a normal stove, the outlet of the secondary air passage defined by the partition plate is positioned on the soup pan. This part is close to the burner and becomes considerably hot due to radiant heat, and the falling objects such as spilled and cooked products are easily burnt and accumulate, and such things are present at the outlet of the secondary air passage. As a result, the flow of secondary air is disturbed immediately before the burner, causing unevenness in the supply of secondary air to the burner, which adversely affects the combustibility.
In addition, it is conceivable to use the conventional virtues on the glass top stove, but these virtues are dull due to the presence of the partition plate, and the smart appearance of the glass top stove is impaired and the appearance is poor.
[0005]
In view of the above points, without impairing the effect of the combustion improvement of the burner, to provide a glass top stove with stove five virtues were small and light as it can improve the maintainability and appearance It is an issue.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the top plate is made of glass, and a glass top stove has a burner facing an opening formed in the top plate, and surrounds the burner on the top plate in a circumferential direction. in those places the stove trivet comprising a plurality of trivet claws arranged at intervals, according to the present invention, at below the upper edge of the trivet claws and, above the leg lower end of the trivet claws An annular frame formed of a strip-shaped plate material with the width direction extending in the vertical direction is provided, and the plurality of five virtue claws are fixed to the annular frame at the leg portions of the respective five virtue claws to constitute the five virtues. At the same time, the distance between the upper edge of the annular frame and the upper edge of the five virtue claws is set to a value necessary and sufficient for exhausting the combustion exhaust gas .
[0008]
The virtues of the present invention are such that the width of the gap between the upper edge of the annular frame and the bottom surface of the cooker, that is, the distance between the upper edge of the annular frame and the upper edge of the virgin claw, is as described above. Therefore, the combustion exhaust gas is smoothly discharged from the gap between the upper edge of the annular frame and the bottom surface of the cooker without detouring below the annular frame. And since the annular frame has a vertical width, the flow of combustion exhaust from the burner and the flow of secondary air toward the burner can be made up and down without a partition plate having a radial spread as in the prior art. Can be partitioned. In particular, in the glass top stove, the top plate is flat up to the burner part without having a depression due to the juice pan, so the secondary air flowing in from the space below the annular frame smoothly flows to the burner part along the top plate. Even if it does not use a flow and the conventional virtue with a partition plate, the combustibility of a burner improves. Furthermore, since the radiant heat from the burner flame passes through the glass top plate and the top plate is maintained at a relatively low temperature, the accumulation of scorching on the top plate is suppressed, and the secondary air flow caused by these depositions is suppressed. It is also possible to prevent the flammability from being adversely affected by the disturbance.
[0009]
In addition, since the annular frame only exists in an annular shape with a width corresponding to the thickness of the belt-like plate material when viewed from the top and bottom, it is difficult for spilled or cooked food to adhere to the annular frame, and the diameter toward the conventional burner. Unlike the partition plate extending inward in the direction, it is difficult to be heated, and as a result, spillage and seizure of the food are effectively prevented, and cleaning of the virtues is facilitated. Furthermore, it becomes lighter than the conventional virtues that use partition plates, and the virtues feel light, and even when used for a glass top stove, the appearance is not impaired.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a glass top stove. In the figure, reference numeral 1 denotes a glass top plate, and a burner 3 faces an opening 2 formed in the top plate 1.
[0011]
The burner 3 includes a burner body 4 made of sheet metal having a mixing tube portion 4a and an annular burner head portion 4b, and an annular burner cap 5 placed on the burner head portion 4b. 4 b is inserted into a protective ring 6 attached to the peripheral edge of the opening 2 of the top plate 1 and protruded from the top plate 1. And many flame holes 5a are formed by the tooth profile of the outer peripheral part of the lower surface of the burner cap 5, and an outward flame is formed by the gas ejected from the burner head part 4b through the flame holes 5a. The burner cap 5 is formed with a small flame hole 5b that opens upward, and is integrally formed with an umbrella portion 5c that covers the inner diameter portion of the burner cap 5 from above to prevent spilling and dropping.
[0012]
On the top plate 1, five virtues 7 are placed so as to surround the burner 3. As shown in FIG. 2, the virtues 7 include a plurality (six in the illustrated example) of five virtues 8 arranged at intervals in the circumferential direction. Each of the five virtue claws 8 is seated on the outer leg portion 8a, the support claw portion 8b for the cooking appliance P extending inward from the upper end of the leg portion 8a, and the top plate 1 extending inward from the lower end of the leg portion 8a. It is formed in a substantially U shape having a portion 8c. The virtues 7 further include an annular frame 9 formed of a strip-shaped plate material whose width direction is along the vertical direction. The annular frame 9 is disposed so as to be positioned below the upper edge (the upper edge of the support claw portion 8b) of the five virtue claws 8 and above the lower end of the leg portion 8a (the lower edge of the seating portion 8c). The five virtue claws 8 are fixed to the annular frame 9 at their leg portions 8a. In the present embodiment, the recessed portion 8d is formed on the outer edge of the leg portion 8a, and the leg portion 8a is welded and fixed to the annular frame 9 in a state where the annular frame 9 is fitted into the recessed portion 8d.
[0013]
When the cooker P is placed on the virtues 7 and the burner 3 is ignited, the combustion exhaust from the burner 3 flows outward along the bottom surface of the cooker P, and the upper edge of the annular frame 9 as shown by the arrow a in FIG. And the bottom of the cooker P are discharged to the outside. Further, secondary air is supplied to the burner 3 from the inside through the inner diameter portions of the burner head portion 4b and the burner cap 5 as indicated by an arrow b, and a gap between the lower edge of the annular frame 9 and the top plate 1 is provided. The secondary air is also supplied from the outside as shown by the arrow c.
[0014]
Here, the width of the gap between the upper edge of the annular frame 9 and the bottom surface of the cooker P, that is, the distance L1 between the upper edge of the annular frame 9 and the upper edge of the five virtue claws 8 is used to discharge the combustion exhaust gas. If set to a necessary and sufficient value, the combustion exhaust gas is smoothly discharged from the gap between the upper edge of the annular frame 9 and the bottom surface of the cooking device P without detouring below the annular frame 9. Since the annular frame 9 has a vertical width, secondary air flows through the gap between the lower edge of the annular frame 9 and the top plate 1 in a state of being partitioned from the flow of combustion exhaust. And since the top plate 1 is flat to the burner part without having a depression by a juice pan like a normal stove, the secondary flowing in through the gap between the lower edge of the annular frame 9 and the top plate 1 Air flows smoothly along the top plate 1 to the burner portion, and the combustibility of the burner 3 is improved. Furthermore, the top plate 1 is made of glass, and the radiant heat from the burner flame is transmitted through the top plate 1 so that the top plate 1 is kept at a relatively low temperature. In addition, the turbulence of the secondary air flow due to these accumulations is prevented from adversely affecting the combustibility.
[0015]
Moreover, since the annular frame 9 exists only in an annular shape with a width corresponding to the plate thickness of the belt-like plate material when viewed from the top and bottom, it is difficult for spilled food and food to adhere to it, and for a conventional burner. Unlike the partition plate extending inward in the radial direction, it is difficult to be heated, and as a result, spilling and seizing of the food are effectively prevented, and cleaning of the virtues 7 is facilitated. Furthermore, it is lighter than the conventional virtues that use partition plates, and the virtues 7 feel light, and even if used for a glass top stove, the appearance is not impaired.
[0016]
In addition, in order to improve the partition performance between the flow of combustion exhaust and the flow of secondary air, the vertical width L2 of the annular frame 9 is set to a distance between the upper edge of the annular frame 9 and the upper edge of the five virtue claws 8. It is desirable to set to 0.4 to 1.5 times L1. Further, the distance L3 between the lower edge of the annular frame 9 and the lower end of the leg portion 8a varies depending on the required supply amount of secondary air from the outside, but also from the inside as in this embodiment. When supplying secondary air, it is desirable to set it to 0.3 times L1 or more.
[0017]
Although the glass top stove using the external flame type burner that forms the outward flame as the burner 3 has been described above, the present invention is similarly applied to the glass top stove using the internal flame type burner that forms the inward flame. Applicable.
[0018]
【Example】
In the glass top stove shown in FIG. 1, a combustion test was performed using five virtues (product of the present invention) having an annular frame 9 and five virtues (comparative product) having no annular frame. As for the dimensions of the product, the outer diameter of the annular frame 9 is φ190 mm, L1 is 13 mm, L2 is 11 mm, and L3 is 17 mm. The test results were as shown in the table below.
[0019]
[Table 1]

[0020]
As is apparent from this table, in the product of the present invention, the combustibility of the burner 3 is improved, the amount of CO generated is reduced, and the thermal efficiency is also improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of the main part of an example of a glass top stove according to the present invention. FIG. 2 is a plan view of five virtues used in the stove of FIG.
DESCRIPTION OF SYMBOLS 1 ... Top plate 2 ... Opening 3 ... Burner 7 ... Gotoku 8 ... Gotoku nail 8a ... Leg part 9 ... Ring frame

Claims

The top plate is made of glass, and is a glass top stove that exposes the burner to the opening formed in the top plate, and is arranged on the top plate so as to surround the burner with an interval in the circumferential direction. In the one where the five virtue claws having a plurality of virtue claws are placed , the band shape is located below the upper edge of the virtue claws and above the lower end of the leg portions of the virtue claws, and the width direction is along the vertical direction. An annular frame formed of the plate material is provided, and the plurality of five virtue claws are fixed to the annular frame at the leg portions of the respective five virtue claws to constitute the five virtues, and the upper edge of the annular frame and the upper edge of the five virtue claws; A glass top stove characterized in that the distance between the two is set to a value necessary and sufficient for exhaust of combustion exhaust .