JP3737184B2 - Stove - Google Patents

Stove Download PDF

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Publication number
JP3737184B2
JP3737184B2 JP06120196A JP6120196A JP3737184B2 JP 3737184 B2 JP3737184 B2 JP 3737184B2 JP 06120196 A JP06120196 A JP 06120196A JP 6120196 A JP6120196 A JP 6120196A JP 3737184 B2 JP3737184 B2 JP 3737184B2
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JP
Japan
Prior art keywords
virtues
flame
burner
stove
temperature sensor
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 - Fee Related
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JP06120196A
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Japanese (ja)
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JPH09250755A (en
Inventor
友三郎 山崎
真宏 芳村
孝平 小林
政男 荒松
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.)
Tokyo Gas Co Ltd
Rinnai Corp
Original Assignee
Tokyo Gas Co Ltd
Rinnai Corp
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Priority to JP06120196A priority Critical patent/JP3737184B2/en
Publication of JPH09250755A publication Critical patent/JPH09250755A/en
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Publication of JP3737184B2 publication Critical patent/JP3737184B2/en
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  • Gas Burners (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、台所等で使用するコンロに関する。
【0002】
【従来の技術】
従来のコンロは、爪付きの五徳を用い、バーナを外周に炎孔を有する外炎式リングバーナで構成して、バーナの炎や炎により生じた熱気が五徳の爪部に載置する鍋の底面に沿って五徳の外側に自然に放出されるようにしているが、このものでは、放出された熱気の一部が鍋の取手に達してこれを加熱し、取手が持ちづらくなるといった不具合を生ずる。
【0003】
かかる不具合を解消するため、バーナの炎を囲う筒状の五徳と、バーナの炎により生じた熱気を五徳で囲われた空間から強制的に吸引排気する排気ファンとを設け、炎や熱気が五徳の外側に漏出することを防止できるようにした炎漏出防止型コンロが考えられている。
【0004】
【発明が解決しようとする課題】
上記の如き炎漏出防止型コンロでは、鍋の取手の加熱を防止できるものの、鍋に対する炎や熱気の接触範囲が限られるため、加熱効率が低下し勝ちである。この場合、バーナとして内周に炎孔を有する内炎式リングバーナを用いれば、五徳で囲われた空間の中央部分に炎が立昇るため、鍋底の中央部分にも炎や熱気が接触し、加熱効率が向上する。
【0005】
ところで、鍋底の過熱を生じたときにバーナを消火すべく、鍋底の温度を検出する温度センサを設けることがある。この温度センサは、一般に、鍋底の中央部に当接するように配置されるが、バーナを上記の如く内炎式リングバーナで構成すると、炎が温度センサに近付き、温度センサが炎からの熱影響を受けて鍋底の温度を正確に検出できなくなる。
【0006】
本発明は、以上の点に鑑み、温度センサによる鍋底温度の検出精度を確保して、且つ、加熱効率を向上し得るようにしたコンロを提供することを課題としている。
【0007】
【課題を解決するための手段】
上記課題を解決すべく、本発明では、バーナの炎を囲う筒状の五徳と、バーナの炎により生じた熱気を五徳で囲われた空間から強制的に吸引排気する排気ファンとを備えるコンロであって、五徳に載置する鍋の底面の温度を検出する温度センサを備えるものにおいて、バーナを内周に炎孔を有する内炎式リングバーナで構成すると共に、五徳を内外2重壁構造の筒状に形成し、五徳の内周壁に排気窓を開設して、五徳で囲われた空間から排気窓と五徳の2重壁間の空間とを介して熱気を吸引排気するようにし、且つ、五徳の2重壁間の空間の周方向の一部に排気窓に連通しない小室を画成し、該小室に温度センサを配置している。
【0008】
本発明によれば、内炎式リングバーナを用いることで上記の如く加熱効率が向上し、また、五徳が温度センサに対する炎や熱気の熱影響を遮断する遮熱部材として機能し、鍋底の温度を温度センサで正確に検出できるようになる。
【0009】
また、五徳を内外2重壁構造の筒状に形成し、五徳の内周壁に排気窓を開設して、五徳で囲われた空間から排気窓と五徳の2重壁間の空間とを介して熱気を吸引排気するように構成しているので、五徳で囲われた空間の中央部に立昇った炎が鍋底に接触しつつ五徳に向けて径方向外方に流れ、五徳で囲われた空間のほぼ全域において炎や熱気が鍋底に接触し、加熱効率が一層向上する。
【0010】
尚、五徳の外周壁の外側に温度センサを配置することも可能であるが、これでは鍋底が五徳の外周壁の外側に張出すような大きな鍋にしか対処できなくなり、また、体裁も悪くなるため、五徳内に温度センサを配置することが望まれる。この場合、五徳の2重壁間の空間の周方向の一部に排気窓に連通しない小室を画成し、該小室に温度センサを配置すれば、五徳内に温度センサを配置して、且つ、温度センサに対する炎や熱気の熱影響も遮断でき、有利である。但し、小室の温度が上昇してセンサの検出精度に悪影響が及ぶことを防止するため、五徳の外周壁の前記小室に合致する部分に外気取入孔を開設することが望ましい。
【0011】
ところで、爪付き五徳のような非筒状の五徳を用いる通常のコンロにおいても、バーナとして内炎式リングバーナを用いて、加熱効率を向上させることが望まれる。この場合、五徳に、鍋の底面に当接する、バーナの炎や炎により生じた熱気が流入しない箱状部を設け、箱状部内に鍋の底面の温度を検出する温度センサを配置すれば、温度センサによる鍋底温度の検出精度を確保できる。
【0012】
【発明の実施の形態】
図1を参照して、1はコンロ本体であり、コンロ本体1の上面には天板2が設けられている。
天板2は、外天板20と内天板21とで構成されており、内天板21の上面に五徳3を載置すると共に、内天板21の下側に有底筒状の燃焼筐4を設け、該燃焼筐4にバーナ5を収納している。
【0013】
バーナ5は、内周に炎孔5aを有する内炎式リングバーナで構成され、バーナ5からの炎Fが内天板21の中央の開口22を通して立昇るようにしている。尚、燃焼筐4には複数の通気孔40が形成されており、これら通気孔40を介して燃焼筐4内に二次空気が導入される。
【0014】
五徳3は、バーナ5の炎Fを囲う、内外2重壁構造の筒状に形成されており、五徳3の内周壁に排気窓30を開設している。また、内天板21を上下2重壁構造として、五徳3の2重壁間の空間と内天板21の2重壁間の空間とを内天板21の上壁に開設した連通孔23を介して連通させ、更に、内天板21の2重壁間の空間を天板2の奥部に設けた排気口6aに連通させる排気ダクト6を設け、内天板21と排気ダクト6とで五徳3の2重壁間の空間に連通する排気通路を構成している。そして、排気ダクト6に排気ファン7を介設し、バーナ5の炎Fにより生じた熱気を五徳3で囲われた空間から排気窓30と五徳3の2重壁間の空間とを介して強制的に吸引排気し得るようにしている。
【0015】
かくて、五徳3に鍋Pを載置した状態において、バーナ5の炎Fは、五徳3で囲われる空間の中央部に立昇って五徳3に向けて径方向外方に流れ、結局、五徳3で囲われる空間のほぼ全域で鍋底に炎Fや熱気が接触し、加熱効率が向上する。また、五徳3の外側に炎Fや熱気は漏出せず、鍋Pの取手PHが熱気で加熱されることもない。
【0016】
五徳3の2重壁間の空間の周方向の一部には、図2に示す如く、周方向両側の仕切壁31,31によって画成された、排気窓30に連通しない小室32が設けられており、該小室32の上壁部内面に温度センサ8を取付けて、五徳3に載置する鍋Pの底面の温度を温度センサ8で検出し、例えば鍋底の過熱を生じたとき温度センサ8からの信号でバーナ5を消火するようなバーナ制御をしている。この場合、五徳3で囲われる空間内の炎Fや熱気による温度センサ8への熱影響は五徳3の内周壁で遮断され、また、五徳3の2重壁間の空間に流れる熱気からの熱影響は仕切壁31によって遮断される。また、五徳3の外周壁の小室32に合致する部分に外気取入孔33を形成して、小室32内に五徳3の内周壁や仕切壁31を介しての伝熱で熱が籠ることを防止しており、かくて、温度センサ8により鍋底の温度を正確に検出できる。温度センサ8としては、ワックス等の熱膨張物質を封入した熱膨張式のものやバイメタルやサーミスタや熱電対等の種々のものを用いることができる。
【0017】
尚、本実施形態では、内天板21の上壁に形成する連通孔23を小室32に合致する部分にも形成し、小室32に外気取入孔33から連通孔23に向けて排気ファン7の吸引力により強制的に外気が流れるようにしているが、小室32に合致する部分の連通孔23を無くし、小室32内を外気取入孔33を介して自然換気させるようにしても良い。
【0018】
また、本実施形態では、小室32の上壁部内面に温度センサ8を取付けているが、小室32の上壁部に透孔を形成し、温度センサをこの透孔を通して鍋底に当接するように配置しても良い。
【0019】
以上、筒状の五徳3を用いる炎漏出防止型コンロに本発明を適用した実施形態について説明したが、バーナとして内炎式リングバーナを用いるコンロであって、非筒状の五徳、例えば、図3に示すような爪9a付きの五徳9を用いるものでは、五徳9に、一部の爪9aに置換して、鍋Pの底面に当接する、バーナの炎や熱気が流入しない箱状部9bを設け、箱状部9b内に温度センサ8を配置して、温度センサ8による鍋底温度の検出精度を確保することが望ましい。
【0020】
ところで、上記した小室32や箱状部9bを複数箇所、例えば、図3に示すように周方向一側と他側の2箇所に設け、夫々に温度センサ8を配置しても良い。この場合、複数の温度センサ8の検出温度の平均値で鍋底温度を判断するように構成すれば、鍋が偏心して置かれた場合にも対応できる。
【図面の簡単な説明】
【図1】 本発明に係るコンロの一例の截断側面図
【図2】 図1のII-II線截断面図
【図3】 (A)他の実施形態の五徳の平面図、(B)図3(A)のB-B線断面図
【符号の説明】
3 五徳 30 排気窓
32 小室 33 外気取入孔
5 バーナ 5a 炎孔
7 排気ファン 8 温度センサ
9 五徳 9b 箱状部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stove used in a kitchen or the like.
[0002]
[Prior art]
The conventional stove uses five virtues with claws, and is composed of an external flame type ring burner having a flame hole on the outer periphery, and the hot air generated by the burner flame and flame is placed on the claws of the five victories. It is designed to be released naturally along the bottom to the outside of the virtues, but with this one, a part of the released hot air reaches the handle of the pan and heats it, making it difficult to hold the handle. Arise.
[0003]
In order to solve such problems, a cylindrical virtues surrounding the burner flame and an exhaust fan that forcibly sucks and exhausts the heat generated by the burner flame from the space surrounded by the virtues are provided. There is a flame leakage prevention type stove that can prevent leakage to the outside.
[0004]
[Problems to be solved by the invention]
Although the above-described flame leakage prevention type stove can prevent the heating of the pan handle, the contact range of the flame and hot air with respect to the pan is limited, so the heating efficiency tends to decrease. In this case, if an internal flame type ring burner having a flame hole on the inner periphery is used as the burner, the flame rises in the central part of the space surrounded by the five virtues, so that the flame and hot air also contact the central part of the pan bottom, Heating efficiency is improved.
[0005]
By the way, in order to extinguish the burner when the pan bottom is overheated, a temperature sensor for detecting the temperature of the pan bottom may be provided. This temperature sensor is generally arranged so as to contact the center of the pan bottom. However, if the burner is constituted by the internal flame type ring burner as described above, the flame approaches the temperature sensor, and the temperature sensor is affected by the heat from the flame. The temperature at the bottom of the pan cannot be detected accurately.
[0006]
This invention makes it a subject to provide the stove which ensured the detection accuracy of the pan bottom temperature by a temperature sensor, and was able to improve heating efficiency in view of the above point.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a stove comprising a cylindrical virtues surrounding a burner flame and an exhaust fan for forcibly sucking and exhausting hot air generated by the burner flame from the space surrounded by the virtues. The temperature sensor for detecting the temperature of the bottom of the pan placed on Gotoku is composed of an inner flame type ring burner having a flame hole on the inner periphery, and the Gotoku has an inner and outer double wall structure. Formed in a cylindrical shape, opened an exhaust window on the inner peripheral wall of Gotoku, and sucked and exhausted hot air from the space surrounded by Gotoku through the space between the exhaust window and the double wall of Gotoku, and A small chamber that does not communicate with the exhaust window is defined in a part of the space between the double walls of the five virtues, and a temperature sensor is disposed in the small chamber .
[0008]
According to the present invention, the heating efficiency is improved as described above by using the internal flame type ring burner, and the virtues function as a heat shield member that blocks the thermal effect of flame and hot air on the temperature sensor, Can be accurately detected by the temperature sensor.
[0009]
In addition, the virtues are formed in a cylindrical shape with a double wall structure inside and outside, an exhaust window is opened on the inner peripheral wall of the virtues, and from the space enclosed by the virtues through the space between the exhaust window and the double wall of the virtues Since it is configured to suck and exhaust hot air, the flame that rises in the center of the space surrounded by the virtues flows radially outward toward the virtues while contacting the bottom of the pot, and is surrounded by the virtues In almost the whole area, flame and hot air contact the bottom of the pan, and the heating efficiency is further improved.
[0010]
Although it is possible to place a temperature sensor outside the outer wall of Gotoku, this can only deal with large pots whose pan bottom projects outside the outer wall of Gotoku, and the appearance is also worse. Therefore, it is desirable to arrange a temperature sensor in Gotoku. In this case, if a small chamber that does not communicate with the exhaust window is defined in a part of the space between the double walls of the five victories and a temperature sensor is disposed in the small chamber, the temperature sensor is disposed in the virtue, and This is advantageous because it can block the thermal effects of flame and hot air on the temperature sensor. However, in order to prevent the temperature of the small chamber from rising and adversely affecting the detection accuracy of the sensor, it is desirable to open an outside air intake hole in a portion of the outer wall of Gotoku that matches the small chamber.
[0011]
By the way, it is desired to improve the heating efficiency by using an internal flame type ring burner as a burner even in an ordinary stove using a non-cylindrical virtues such as a claw with a claw. In this case, if a box-shaped part that contacts the bottom of the pan and does not flow in the hot air generated by the flame of the burner, and a temperature sensor that detects the temperature of the bottom of the pot in the box-shaped part, The detection accuracy of the pan bottom temperature by the temperature sensor can be secured.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
With reference to FIG. 1, reference numeral 1 denotes a stove body, and a top plate 2 is provided on the top surface of the stove body 1.
The top plate 2 includes an outer top plate 20 and an inner top plate 21, and the virtues 3 are placed on the upper surface of the inner top plate 21, and a bottomed cylindrical combustion is placed below the inner top plate 21. A casing 4 is provided, and a burner 5 is accommodated in the combustion casing 4.
[0013]
The burner 5 is composed of an internal flame type ring burner having a flame hole 5 a on the inner periphery, and flame F from the burner 5 rises through an opening 22 at the center of the inner top plate 21. Note that a plurality of vent holes 40 are formed in the combustion casing 4, and secondary air is introduced into the combustion casing 4 through the vent holes 40.
[0014]
Gotoku 3 is formed in a cylindrical shape with an inner and outer double wall structure surrounding the flame F of the burner 5, and an exhaust window 30 is opened on the inner peripheral wall of Gotoku 3. In addition, the inner top plate 21 has an upper and lower double wall structure, and a communication hole 23 is provided in the upper wall of the inner top plate 21 with a space between the double walls of Gotoku 3 and a space between the double walls of the inner top plate 21. Further, an exhaust duct 6 is provided for connecting the space between the double walls of the inner top plate 21 to an exhaust port 6a provided in the back of the top plate 2, and the inner top plate 21 and the exhaust duct 6 are connected to each other. The exhaust passage communicating with the space between the double walls of Gotoku 3 is constructed. Then, an exhaust fan 7 is provided in the exhaust duct 6, and hot air generated by the flame F of the burner 5 is forced from the space surrounded by the virtues 3 through the space between the exhaust window 30 and the double walls of the virtues 3. Can be sucked and exhausted.
[0015]
Thus, in the state where the pan P is placed on the Gotoku 3, the flame F of the burner 5 rises to the center of the space surrounded by the Gotoku 3 and flows radially outward toward the Gotoku 3, and eventually Gotoku The flame F and hot air are in contact with the bottom of the pan in almost the entire space surrounded by 3, and the heating efficiency is improved. Moreover, the flame F and hot air do not leak outside Gotoku 3, and the handle PH of the pan P is not heated by hot air.
[0016]
As shown in FIG. 2, a small chamber 32 which is defined by partition walls 31 on both sides in the circumferential direction and which does not communicate with the exhaust window 30 is provided in a part of the space between the double walls of the virtues 3. The temperature sensor 8 is attached to the inner surface of the upper wall of the small chamber 32, and the temperature of the bottom surface of the pan P placed on the virtues 3 is detected by the temperature sensor 8. For example, when the pan bottom is overheated, the temperature sensor 8 Burner control is performed so that the burner 5 is extinguished by a signal from. In this case, the thermal influence on the temperature sensor 8 due to the flame F or hot air in the space surrounded by the virtues 3 is blocked by the inner peripheral wall of the virtues 3, and the heat from the hot air flowing in the space between the double walls of the virtues 3 The influence is blocked by the partition wall 31. Further, an outside air intake hole 33 is formed in a portion of the outer peripheral wall of Gotoku 3 that coincides with the small chamber 32, and heat is generated in the small chamber 32 by heat transfer through the inner peripheral wall and partition wall 31 of Gotoku 3. Thus, the temperature of the pan bottom can be accurately detected by the temperature sensor 8. As the temperature sensor 8, various types such as a thermal expansion type in which a thermal expansion substance such as wax is enclosed, a bimetal, a thermistor, a thermocouple, or the like can be used.
[0017]
In the present embodiment, the communication hole 23 formed in the upper wall of the inner top plate 21 is also formed in a portion matching the small chamber 32, and the exhaust fan 7 is directed to the small chamber 32 from the outside air intake hole 33 toward the communication hole 23. Although the outside air is forced to flow by the suction force, the communication hole 23 corresponding to the small chamber 32 may be eliminated, and the inside of the small chamber 32 may be naturally ventilated via the outside air intake hole 33.
[0018]
Further, in this embodiment, the temperature sensor 8 is attached to the inner surface of the upper wall portion of the small chamber 32, but a through hole is formed in the upper wall portion of the small chamber 32, and the temperature sensor is brought into contact with the bottom of the pan through the through hole. It may be arranged.
[0019]
As mentioned above, although embodiment which applied this invention to the flame leak prevention type stove using the cylindrical virtues 3 was described, it is a stove using an internal flame type ring burner as a burner, Comprising: In the case of using the five virtues 9 with the claws 9a as shown in FIG. It is desirable to arrange the temperature sensor 8 in the box-shaped part 9b and ensure the accuracy of detecting the pan bottom temperature by the temperature sensor 8.
[0020]
By the way, the above-mentioned small chamber 32 and the box-shaped part 9b may be provided in a plurality of places, for example, two places on one side in the circumferential direction and the other side as shown in FIG. In this case, if the pan bottom temperature is determined based on the average value of the detected temperatures of the plurality of temperature sensors 8, it is possible to cope with the case where the pan is placed eccentrically.
[Brief description of the drawings]
FIG. 1 is a cut-away side view of an example of a stove according to the present invention. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1. FIG. 3 (A) BB line cross section [Explanation of symbols]
3 Gotoku 30 Exhaust window 32 Small chamber 33 Outside air intake hole 5 Burner 5a Flame hole 7 Exhaust fan 8 Temperature sensor 9 Gotoku 9b Box-shaped part

Claims (3)

バーナの炎を囲う筒状の五徳と、バーナの炎により生じた熱気を五徳で囲われた空間から強制的に吸引排気する排気ファンとを備えるコンロであって、五徳に載置する鍋の底面の温度を検出する温度センサを備えるものにおいて、
バーナを内周に炎孔を有する内炎式リングバーナで構成すると共に、五徳を内外2重壁構造の筒状に形成し、五徳の内周壁に排気窓を開設して、五徳で囲われた空間から排気窓と五徳の2重壁間の空間とを介して熱気を吸引排気するようにし、且つ、五徳の2重壁間の空間の周方向の一部に排気窓に連通しない小室を画成し、該小室に温度センサを配置する、ことを特徴とするコンロ。
A stove comprising a cylindrical five virtue surrounding the flame of the burner and an exhaust fan for forcibly sucking and exhausting the heat generated by the burner flame from the space enclosed by the five virtue, and the bottom of the pan placed on the virtue With a temperature sensor that detects the temperature of
The burner is composed of an internal flame type ring burner with a flame hole on the inner periphery, the virtues are formed in a cylindrical shape with an inner and outer double wall structure, and an exhaust window is opened on the inner peripheral wall of the virtues, surrounded by the virtues. A small chamber that does not communicate with the exhaust window is defined in a part of the circumferential direction of the space between the double wall of the virtues so that hot air is sucked and exhausted from the space through the exhaust window and the space between the double walls of the virtues. And a stove , wherein a temperature sensor is disposed in the small chamber .
五徳の外周壁の前記小室に合致する部分に外気取入孔を開設することを特徴とする請求項1に記載のコンロ。  The stove according to claim 1, wherein an outside air intake hole is opened in a portion of the outer wall of the virtues that matches the small chamber. 五徳と、五徳に載置する鍋の底面の温度を検出する温度センサとを備えるコンロであって、バーナとして内周に炎孔を有する内炎式リングバーナを用いるものにおいて、
五徳に、鍋の底面に当接する、バーナの炎や炎により生じた熱気が流入しない箱状部を設け、箱状部内に前記センサを配置する、
ことを特徴とするコンロ。
In a stove comprising five virtues and a temperature sensor that detects the temperature of the bottom of the pan placed on the five virtues, using an internal flame type ring burner having a flame hole on the inner periphery as a burner,
In the five virtues, a box-shaped part that abuts the bottom of the pan and does not flow in hot air generated by the flame or flame of the burner, and the sensor is arranged in the box-shaped part,
A stove characterized by that.
JP06120196A 1996-03-18 1996-03-18 Stove Expired - Fee Related JP3737184B2 (en)

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JPH09250755A JPH09250755A (en) 1997-09-22
JP3737184B2 true JP3737184B2 (en) 2006-01-18

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