JP4557736B2 - Stove - Google Patents

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JP4557736B2
JP4557736B2 JP2005028001A JP2005028001A JP4557736B2 JP 4557736 B2 JP4557736 B2 JP 4557736B2 JP 2005028001 A JP2005028001 A JP 2005028001A JP 2005028001 A JP2005028001 A JP 2005028001A JP 4557736 B2 JP4557736 B2 JP 4557736B2
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infrared
temperature
infrared intensity
intensity
heated
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JP2006214652A (en
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章 宮藤
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Osaka Gas Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Description

本発明は、被加熱物を加熱する加熱手段と、天板の下方側に位置して前記被加熱物から放射された赤外線の強度を検出する赤外線強度検出手段と、その赤外線強度検出手段により検出された赤外線の強度に基づいて前記被加熱物の温度を検出する被加熱物温度検出手段とを備えたコンロに関する。   The present invention includes a heating means for heating an object to be heated, an infrared intensity detection means for detecting the intensity of infrared rays emitted from the object to be heated, located below the top plate, and the infrared intensity detection means. The present invention relates to a stove provided with a heated object temperature detecting means for detecting the temperature of the heated object based on the intensity of the infrared rays.

上記構成のコンロは、加熱手段により加熱される鍋等の被加熱物の温度を検出するにあたって、被加熱物から放射された赤外線の強度を赤外線強度検出手段によって検出して、その赤外線の強度に基づいて被加熱物の温度を検出する構成とすることで、被加熱物の温度制御を行ったり、被加熱物における過度の温度上昇を回避させるために加熱手段の加熱作動を緊急停止させる等の後処理を可能にしたものである。   When detecting the temperature of an object to be heated such as a pan heated by the heating means, the stove configured as described above detects the intensity of infrared rays radiated from the object to be heated by means of infrared intensity detection means. Based on the configuration to detect the temperature of the object to be heated based on the temperature control of the object to be heated, the heating operation of the heating means is stopped urgently to avoid excessive temperature rise in the object to be heated, etc. Post-processing is possible.

そして、このような構成のコンロにおいて、従来では、次のように構成されたものがあった。
すなわち、天板に形成された加熱用の開口の下方側に前記加熱手段としてのガス燃焼式のバーナが設けられ、このバーナにて形成される火炎が加熱用の開口を通して被加熱物を加熱するように構成されたコンロにおいて、天板に形成された前記開口の下方に位置させる状態で設けた赤外線強度検出手段により前記加熱用の開口を通して被加熱物から放射された赤外線の強度を検出するように構成されたものがあり、前記赤外線強度検出手段は、バーナに近い箇所に位置する状態で設けられようになっていた（例えば、特許文献１参照。）。ちなみに、赤外線強度検出手段としては、例えば、ＰｂＳ（硫化鉛）やＰｂＳｅ（セレン化鉛）等に代表されるような光導電型検出素子等を用いて赤外線強度を検出する構成となっている。 And, in the stove having such a configuration, there has been conventionally configured as follows.
That is, a gas combustion burner as the heating means is provided below the heating opening formed in the top plate, and the flame formed by the burner heats the object to be heated through the heating opening. In the stove configured as described above, the intensity of the infrared ray radiated from the object to be heated is detected by the infrared intensity detection means provided in a state of being positioned below the opening formed on the top plate through the heating opening. The infrared intensity detecting means is provided in a state of being located near a burner (see, for example, Patent Document 1). Incidentally, the infrared intensity detection means is configured to detect the infrared intensity using a photoconductive detection element such as PbS (lead sulfide) or PbSe (lead selenide).

特開２００２−３４０３３９号公報JP 2002-340339 A

上記従来構成においては、被加熱物から放射される赤外線を良好に受光するために、天板に形成された加熱用開口の下方側において、加熱手段に比較的近い箇所に位置させる状態で、赤外線強度検出手段が設けられるものとなっているが、このような構成であれば、前記加熱手段によって被加熱物を加熱するときに、加熱手段による熱が赤外線強度検出手段にも作用して赤外線強度検出手段自身が温度上昇することがある。   In the above conventional configuration, in order to satisfactorily receive the infrared rays emitted from the object to be heated, the infrared rays are placed in a position relatively close to the heating means on the lower side of the heating opening formed on the top plate. In this configuration, when the object to be heated is heated by the heating unit, the heat from the heating unit also acts on the infrared intensity detection unit, and the infrared intensity is detected. The detection means itself may increase in temperature.

ところで、上記したような光導電型検出素子等によって構成される赤外線強度検出手段は、赤外線強度検出手段自身が温度上昇すると、その温度上昇に伴って赤外線を受光してその赤外線強度を検出するときの検出感度が低下することになる。つまり、赤外線強度検出手段に入射してくる赤外線の強度が同じであっても、赤外線強度検出手段自身の温度が変化すると、それに伴って出力値が変化する。具体的には、温度が上昇するほど出力値が低下して検出感度が低下するのである。   By the way, the infrared intensity detection means constituted by the photoconductive detection element or the like as described above, when the infrared intensity detection means itself rises in temperature, receives infrared rays as the temperature rises and detects the infrared intensity. The detection sensitivity will be reduced. That is, even if the intensity of the infrared rays incident on the infrared intensity detecting means is the same, the output value changes accordingly when the temperature of the infrared intensity detecting means itself changes. Specifically, as the temperature increases, the output value decreases and the detection sensitivity decreases.

しかしながら、上記実施形態では赤外線強度検出手段自身の温度上昇に対する対策はとられていないので、上述したように加熱手段の加熱作用により温度が上昇すると、検出感度が低下して被加熱物から放射される赤外線の強度を精度よく検出することができないものとなるおそれがあった。   However, in the above embodiment, no countermeasure is taken against the temperature rise of the infrared intensity detection means itself. Therefore, as described above, when the temperature rises due to the heating action of the heating means, the detection sensitivity is lowered and emitted from the object to be heated. There is a risk that the intensity of the infrared rays may not be detected accurately.

本発明の目的は、赤外線強度検出手段自身が温度上昇することを抑制して、被加熱物から放射される赤外線の強度を精度よく検出して被加熱物の温度を検出するときの検出精度の向上を図ることが可能となるコンロを提供する点にある。   The object of the present invention is to suppress the temperature rise of the infrared intensity detection means itself, to accurately detect the intensity of infrared rays emitted from the object to be heated, and to detect the temperature of the object to be heated. It is in providing a stove that can be improved.

本発明に係るコンロは、被加熱物を加熱する加熱手段と、天板の下方側に位置して前記被加熱物から放射された赤外線の強度を検出する赤外線強度検出手段と、その赤外線強度検出手段により検出された赤外線の強度に基づいて前記被加熱物の温度を検出する被加熱物温度検出手段とを備えたものであって、その第１特徴構成は、前記赤外線強度検出手段が、光入射用の開口部を備えたパッケージング内に、前記開口部を通じて入射する赤外線を検出可能な赤外線検出素子を備え、前記被加熱物から放射される赤外線における互いに異なる複数の波長域夫々についての赤外線強度を検出するように構成され、
前記被加熱物温度検出手段が、前記赤外線強度検出手段にて検出される前記複数の波長域夫々についての赤外線強度の関係に基づいて、前記被加熱物の温度を検出するように構成されているところ、
前記パッケージングが、前記パッケージングの上方側並びに下方側に空間が形成されるように設けられ、
前記赤外線検出素子が、前記パッケージング内で周囲に空間が形成された支持台の上に設けられるとともに、前記赤外線検出素子の駆動部が前記パッケージング内に設けられ、
前記赤外線強度検出手段の温度上昇を抑制すべく前記赤外線強度検出手段を冷却する冷却手段が設けられ、
前記冷却手段が、前記パッケージングの上方側の空間並びに下方側の空間を通風する状態で冷却用の風を通風する通風手段を備えて構成されている点にある。 The stove according to the present invention includes a heating means for heating an object to be heated, an infrared intensity detection means for detecting the intensity of infrared rays radiated from the object to be heated, which is located below the top plate, and its infrared intensity detection. And a heated object temperature detecting means for detecting the temperature of the heated object based on the intensity of the infrared ray detected by the means, the first characteristic configuration is that the infrared intensity detecting means is a light Infrared rays for each of a plurality of different wavelength ranges in the infrared rays radiated from the object to be heated are provided with an infrared detection element capable of detecting the infrared rays incident through the openings in the packaging having the openings for incidence. Configured to detect intensity,
The heated object temperature detecting means is configured to detect the temperature of the heated object based on the relationship of the infrared intensity for each of the plurality of wavelength ranges detected by the infrared intensity detecting means. However,
The packaging is provided such that a space is formed on the upper side and the lower side of the packaging,
The infrared detection element is provided on a support base in which a space is formed in the packaging, and a drive unit for the infrared detection element is provided in the packaging.
Cooling means for cooling the infrared intensity detecting means is provided to suppress the temperature rise of the infrared intensity detecting means,
The cooling means is configured to include ventilation means for passing cooling air in a state where the upper space and the lower space of the packaging are passed .

第１特徴構成によれば、被加熱物から放射される赤外線を良好に受光するために、前記赤外線強度検出手段が、前記加熱手段に近い箇所であって且つ加熱手段の加熱作用を受けるおそれがある位置に設けられていても、赤外線強度検出手段を冷却する冷却手段が備えられているので、赤外線強度検出手段の温度上昇が抑制されることになる。   According to the first characteristic configuration, there is a possibility that the infrared intensity detecting means is close to the heating means and receives the heating action of the heating means in order to receive the infrared rays radiated from the heated object satisfactorily. Even if it is provided at a certain position, since the cooling means for cooling the infrared intensity detecting means is provided, the temperature rise of the infrared intensity detecting means is suppressed.

従って、赤外線強度検出手段自身の温度上昇が抑制されることから、加熱手段による加熱作用を受けることがあっても、赤外線強度検出手段が赤外線を受光して赤外線強度を検出するときの検出感度が大きく変化しない状態で、被加熱物から放射される赤外線の強度を精度よく検出することが可能となり、その結果、被加熱物の温度を検出するときの検出精度の向上を図ることが可能となるコンロを提供できるに至った。   Therefore, since the temperature rise of the infrared intensity detection means itself is suppressed, even when the heating action is applied, the detection sensitivity when the infrared intensity detection means receives infrared rays and detects the infrared intensity is high. It is possible to accurately detect the intensity of infrared rays emitted from the object to be heated in a state where there is no significant change, and as a result, it is possible to improve the detection accuracy when detecting the temperature of the object to be heated. We have been able to provide a stove.

また、通風手段が赤外線強度検出手段に対して冷却用の風を通風することによって、赤外線強度検出手段の温度上昇を抑制すべく赤外線強度検出手段を冷却するのである。すなわち、加熱手段の加熱作用により赤外線強度検出手段が熱せられることがあっても、通風手段により冷却用の風を通風することによって、加熱手段の加熱作用により高温になっている赤外線強度検出手段の周囲の空気を通風により外部に放出させたり、通風によって赤外線強度検出手段自身からの放熱が促されること等により、赤外線強度検出手段の温度が上昇することを抑制できるのである。 Further , when the ventilation means passes cooling air to the infrared intensity detection means, the infrared intensity detection means is cooled in order to suppress the temperature rise of the infrared intensity detection means. That is, even if the infrared intensity detection means may be heated by the heating action of the heating means, the infrared intensity detection means that is at a high temperature due to the heating action of the heating means by passing the cooling air by the ventilation means. It is possible to suppress an increase in the temperature of the infrared intensity detecting means by causing ambient air to be discharged to the outside by ventilation or by radiating heat from the infrared intensity detecting means itself by ventilation.

さらに、赤外線強度検出手段が、被加熱物から放射される赤外線における互いに異なる複数の波長域夫々についての赤外線強度を検出し、温度検出手段が、前記複数の波長域夫々についての赤外線強度の関係に基づいて被加熱物の温度を検出するのである。例えば、前記互いに異なる複数の波長域夫々についての赤外線強度の比等の関係と、予め求められている赤外線強度と温度との相関関係等から被加熱物の温度を検出することができる。そして、このように互いに異なる複数の波長域夫々についての赤外線強度の比等の関係を用いて被加熱物の温度を検出するようにすると、被加熱物の放射率（輻射率）に依存することなく正確に被加熱物の温度を検出することが可能となる。  Further, the infrared intensity detection means detects the infrared intensity for each of a plurality of different wavelength ranges in the infrared ray emitted from the object to be heated, and the temperature detection means determines the relationship of the infrared intensity for each of the plurality of wavelength ranges. Based on this, the temperature of the object to be heated is detected. For example, the temperature of the object to be heated can be detected from the relationship such as the ratio of the infrared intensity for each of the plurality of different wavelength ranges and the correlation between the infrared intensity and the temperature obtained in advance. And, if the temperature of the object to be heated is detected using the relationship such as the ratio of the infrared intensity for each of a plurality of different wavelength ranges, it depends on the emissivity (radiation rate) of the object to be heated. It becomes possible to accurately detect the temperature of the object to be heated.

本発明の第２特徴構成は、第１特徴構成に加えて、前記赤外線強度検出手段の外周部を断熱材にて覆うように構成されている点にある。 The second characteristic configuration of the present invention is that, in addition to the first characteristic configuration, the outer peripheral portion of the infrared intensity detecting means is configured to be covered with a heat insulating material.

第２特徴構成によれば、赤外線強度検出手段の外周部が断熱材にて覆われる構成としたので、赤外線強度検出手段が加熱手段の加熱作用を受けるおそれがある位置に設けられていても、加熱手段からの熱は外周部を覆っている断熱材によって遮断されるので、赤外線強度検出手段に到達するおそれは少ない。従って、赤外線強度検出手段が加熱手段の熱によって温度上昇するおそれが少ないものとなって、赤外線強度検出手段の温度上昇をより確実に抑制することができる。 According to the second characteristic configuration, since the outer peripheral portion of the infrared intensity detection means is covered with the heat insulating material, even if the infrared intensity detection means is provided at a position where the heating action of the heating means may be received, Since the heat from the heating means is blocked by the heat insulating material covering the outer peripheral portion, there is little possibility of reaching the infrared intensity detection means. Therefore, the infrared intensity detecting means is less likely to increase in temperature due to the heat of the heating means, and the temperature increase of the infrared intensity detecting means can be more reliably suppressed.

本発明の第３特徴構成は、第１特徴構成又は第２特徴構成に加えて、前記赤外線強度検出手段の温度を検出する出力補正用の温度検出手段と、その出力補正用の温度検出手段の検出情報に基づいて前記赤外線強度検出手段の出力を補正する出力補正手段とが備えられている点にある。 The third feature configuration of the present invention includes, in addition to the first feature configuration or the second feature configuration, a temperature detection means for output correction for detecting the temperature of the infrared intensity detection means, and a temperature detection means for the output correction. Output correction means for correcting the output of the infrared intensity detection means based on detection information.

第３特徴構成によれば、出力補正用の温度検出手段により赤外線強度検出手段の温度を検出して、その検出情報に基づいて出力補正手段が赤外線強度検出手段の出力を補正する構成となっている。すなわち、上述したように赤外線強度検出手段自身の温度が上昇すると検出感度が低下するが、同じ赤外線が入射しているときの出力値と赤外線強度検出手段自身の温度との相関関係は予め求めておくことができるので、赤外線強度検出手段の実際の温度を検出して、その検出情報及び上記したような相関関係等を用いて赤外線強度検出手段の出力を補正することにより、正確な赤外線強度を検出することが可能となるのである。 According to the third characteristic configuration, the temperature of the infrared intensity detecting means is detected by the temperature detecting means for output correction, and the output correcting means corrects the output of the infrared intensity detecting means based on the detection information. Yes. That is, as described above, the detection sensitivity decreases when the temperature of the infrared intensity detection unit itself rises. However, the correlation between the output value when the same infrared ray is incident and the temperature of the infrared intensity detection unit itself is obtained in advance. Therefore, by detecting the actual temperature of the infrared intensity detecting means and correcting the output of the infrared intensity detecting means using the detection information and the correlation as described above, the accurate infrared intensity can be obtained. It becomes possible to detect.

〔第１実施形態〕
以下、図面に基づいて、本発明の第１実施形態を説明する。
図１に示すように、コンロは、円形の加熱用の開口１ａを有する平板状の天板１、開口１ａの上方に離間させて加熱対象物調理用の鍋等の被加熱物Ｎを載置可能な五徳２、その五徳２上に載置される被加熱物Ｎを加熱する加熱手段としてのバーナ３０、そのバーナ３０の作動を制御する燃焼制御部３等を備えて構成されている。 [First Embodiment]
Hereinafter, a first embodiment of the present invention will be described based on the drawings.
As shown in FIG. 1, the stove places a flat top plate 1 having a circular heating opening 1a and a heated object N such as a pot for cooking an object to be heated, spaced above the opening 1a. A possible virtues 2, a burner 30 as a heating means for heating an object to be heated N placed on the virtues 2, a combustion control unit 3 for controlling the operation of the burner 30, and the like are provided.

前記バーナ３０は、ブンゼン燃焼式の内炎式バーナであり、燃料供給路５を通じて供給される燃料ガスＧを噴出するガスノズル３１、そのガスノズル３１から燃料ガスＧが噴出されると共に、その燃料ガスＧの噴出に伴う吸引作用により燃焼用空気Ａが供給される混合管３２、及び、内周部に混合気を噴出する複数の炎口３３を備えて、前記混合管３２から混合気が供給される環状ケーシング部材３４等を備えて構成され、前記バーナ３０は、前記開口１ａの下方に位置させて設けている。   The burner 30 is a Bunsen combustion type internal flame type burner. The gas nozzle 31 ejects the fuel gas G supplied through the fuel supply passage 5, the fuel gas G is ejected from the gas nozzle 31, and the fuel gas G The mixing tube 32 to which the combustion air A is supplied by the suction action accompanying the ejection of the gas and the plurality of flame ports 33 for ejecting the air-fuel mixture to the inner peripheral portion are provided, and the air-fuel mixture is supplied from the mixing tube 32. An annular casing member 34 and the like are provided, and the burner 30 is provided below the opening 1a.

このバーナ３０においては、混合管３２から環状ケーシング部材３４内に供給された燃料ガスＧと空気Ａとの混合気が炎口３３から環状ケーシング部材３４の中心に向けて略水平方向に噴出され、その噴出された燃料ガスＧと空気Ａとの混合気が燃焼して、火炎Ｆが前記開口１ａを通って上向きに形成される。   In the burner 30, the mixture of the fuel gas G and air A supplied from the mixing pipe 32 into the annular casing member 34 is ejected from the flame port 33 toward the center of the annular casing member 34 in a substantially horizontal direction. The mixture of the jetted fuel gas G and air A burns, and a flame F is formed upward through the opening 1a.

前記燃料供給路５には、前記ガスノズル３１への燃料ガスＧの供給を断続する燃料供給断続弁６と、ガスノズル３１への燃料ガスＧの供給量を調節する燃料供給量調節弁７とが設けられ、バーナ３０の環状ケーシング部材３４内の下方には、被加熱物Ｎから吹き零れて開口１ａを通して落下した煮汁等を受けるための汁受皿８が設けられる。   The fuel supply path 5 is provided with a fuel supply intermittent valve 6 for intermittently supplying the fuel gas G to the gas nozzle 31 and a fuel supply amount adjusting valve 7 for adjusting the supply amount of the fuel gas G to the gas nozzle 31. In the lower part of the annular casing member 34 of the burner 30, there is provided a juice receiving tray 8 for receiving boiled juice or the like blown from the heated object N and dropped through the opening 1 a.

さらに、このコンロには、天板１の下方側に位置し且つ汁受皿８の中央部に形成した開口８ａの下方側に位置して被加熱物Ｎから放射された赤外線の強度を検出する赤外線強度検出手段としての赤外線強度検出部４０と、その赤外線強度検出部４０により検出された赤外線の強度に基づいて被加熱物Ｎの温度を検出する被加熱物温度検出手段としての温度検出部５０とが設けられている。   Further, the stove is located on the lower side of the top plate 1 and on the lower side of the opening 8a formed in the central portion of the juice receiving tray 8, and detects the intensity of infrared rays emitted from the heated object N. An infrared intensity detector 40 as an intensity detector, and a temperature detector 50 as an object temperature detector for detecting the temperature of the object N to be detected based on the infrared intensity detected by the infrared intensity detector 40; Is provided.

そして、前記赤外線強度検出部４０が、被加熱物Ｎから放射される赤外線における互いに異なる２つの波長域夫々についての赤外線強度を検出するように構成され、前記温度検出部５０が、赤外線強度検出部４０にて検出される２つの波長域夫々についての赤外線強度の関係、具体的には、前記２つの波長域夫々についての赤外線強度の比に基づいて、被加熱物Ｎの温度を検出するように構成されている。さらに、赤外線強度検出部４０は、赤外線の波長範囲のうちのバーナ３０の火炎からの放射が無い又は放射強度が弱い範囲内に設定された波長域の赤外線強度を検出するように構成されている。   And the said infrared intensity detection part 40 is comprised so that the infrared intensity about two mutually different wavelength ranges in the infrared rays radiated | emitted from the to-be-heated material N may be detected, and the said temperature detection part 50 is an infrared intensity detection part. The temperature of the object to be heated N is detected based on the relationship of the infrared intensity for each of the two wavelength ranges detected at 40, specifically, the ratio of the infrared intensity for each of the two wavelength ranges. It is configured. Furthermore, the infrared intensity detection unit 40 is configured to detect the infrared intensity in a wavelength region set within a range where there is no radiation from the flame of the burner 30 in the infrared wavelength range or the radiation intensity is weak. .

次に、赤外線強度検出部４０の構成について説明する。
図２に示すように、赤外線強度検出部４０は、通過させる赤外線の波長域が互いに異なる２個のバンドパスフィルタ４１ａ，４１ｂと、それら２個のバンドパスフィルタ４１ａ，４１ｂを通過した赤外線を各別に検出する２個の赤外線検出素子４２ａ，４２ｂとを備えて構成して、被加熱物Ｎから放射される赤外線における互いに異なる２つの波長域夫々についての赤外線強度を検出するように構成されている。ちなみに、前記バンドパスフィルタ４１ａ，４１ｂは、所定の波長域の赤外線のみを選択的に透過させるように構成されている。 Next, the configuration of the infrared intensity detection unit 40 will be described.
As shown in FIG. 2, the infrared intensity detector 40 includes two bandpass filters 41a and 41b having different wavelength ranges of infrared rays to be transmitted, and infrared rays that have passed through the two bandpass filters 41a and 41b. Two infrared detection elements 42a and 42b that are separately detected are configured to detect infrared intensities in two different wavelength ranges in the infrared rays radiated from the object N to be heated. . Incidentally, the bandpass filters 41a and 41b are configured to selectively transmit only infrared rays in a predetermined wavelength region.

説明を加えると、光入射用の開口部４４を備えたパッケージング４３内に、前記開口部４４を通じて入射する赤外線を検出可能なように、支持台４７の上に前記２個の赤外線検出素子４２ａ，４２ｂを並べて設け、前記開口部４４における一方の赤外線検出素子４２ａに対して赤外線が入射する部分に一方のバンドパスフィルタ４１ａを設け、前記開口部４４における他方の赤外線検出素子４２ｂに対して赤外線が入射する部分に他方のバンドパスフィルタ４１ｂを設けている。又、パッケージング４３内には、前記２個の赤外線検出素子４２ａ，４２ｂを駆動させる駆動部４５が設けられる。更に、前記２個のバンドパスフィルタ４１ａ，４１ｂの表面の全面を覆うように、赤外線を透過可能なカバー部材４６を設けて、そのカバー部材４６にて、前記２個のバンドパスフィルタ４１ａ，４１ｂを保護するように構成してある。   In other words, the two infrared detection elements 42a are provided on the support 47 so that the infrared rays incident through the opening 44 can be detected in the packaging 43 having the opening 44 for light incidence. , 42b are provided side by side, one band pass filter 41a is provided at a portion where infrared rays are incident on one infrared detection element 42a in the opening 44, and infrared rays are provided on the other infrared detection element 42b in the opening 44. The other band pass filter 41b is provided in the portion where the light enters. In the packaging 43, a drive unit 45 for driving the two infrared detection elements 42a and 42b is provided. Further, a cover member 46 capable of transmitting infrared rays is provided so as to cover the entire surface of the two band-pass filters 41a and 41b, and the two band-pass filters 41a and 41b are formed by the cover member 46. Is configured to protect.

図１に示すように、赤外線強度検出部４０を、前記汁受皿８の中央部に形成した開口部８ａに下方側から挿入する状態で配設して、その赤外線強度検出部４０にて、五徳２に載置された被加熱物Ｎの底部から放射された赤外線における２つの波長域夫々についての赤外線強度を検出するように構成してある。   As shown in FIG. 1, the infrared intensity detector 40 is arranged in a state of being inserted from below into an opening 8 a formed at the center of the soup pan 8. 2 is configured to detect the infrared intensity for each of the two wavelength regions in the infrared rays radiated from the bottom of the object N to be heated.

次に、前記２つの波長域の設定の仕方について説明する。
図３に実際のバーナ３０にて形成される火炎から放射される赤外線の放射強度スペクトル分布を示す。この図から明らかなように、赤外線の波長範囲のうち、１．５μｍ以上且つ１．８μｍ以下の範囲、２．０μｍ以上且つ２．４μｍ以下の範囲、３．１μｍ以上且つ４．２μｍ以下の範囲、及び、８．０μｍ以上且つ１２．０μｍ以下の範囲では、火炎からの放射が無い又は放射強度が弱い。
従って、前記２つの波長域を、１．５μｍ以上且つ１．８μｍ以下の範囲内、２．０μｍ以上且つ２．４μｍ下の範囲内、３．１μｍ以上且つ４．２μｍ以下の範囲内、及び８．０μｍ以上且つ１２．０μｍ以下の範囲内に設定することにより、前記２つの波長域を、赤外線の波長範囲のうちの前記バーナ３０の火炎からの放射が無い又は放射強度が弱い範囲内に設定することができるが、この実施形態では、例えば、前記２つの波長域を、３．１μｍ以上且つ４．２μｍ以下の範囲内における互いに異なる波長域に設定してある。 Next, how to set the two wavelength ranges will be described.
FIG. 3 shows the infrared radiation intensity spectrum distribution emitted from the flame formed by the actual burner 30. As is clear from this figure, the infrared wavelength range is 1.5 μm or more and 1.8 μm or less, 2.0 μm or more and 2.4 μm or less, 3.1 μm or more and 4.2 μm or less. In the range of 8.0 μm or more and 12.0 μm or less, there is no radiation from the flame or the radiation intensity is weak.
Therefore, the two wavelength ranges are within a range of 1.5 μm to 1.8 μm, within a range of 2.0 μm to 2.4 μm, within a range of 3.1 μm to 4.2 μm, and 8 By setting within the range of 0.0 μm or more and 12.0 μm or less, the two wavelength ranges are set within a range where there is no radiation from the flame of the burner 30 in the infrared wavelength range or the radiation intensity is weak. However, in this embodiment, for example, the two wavelength ranges are set to different wavelength ranges within a range of 3.1 μm to 4.2 μm.

次に、前記赤外線検出素子４２ａ，４２ｂについて説明を加える。
ＰｂＳ（硫化鉛）又はＰｂＳｅ（セレン化鉛）を赤外線セルとして用いて構成した赤外線検出素子４２ａ，４２ｂは、１．５μｍから５．０μｍの範囲内の赤外線を常温（３００Ｋ）の動作温度にて検出可能であり、しかも、３．１μｍ以上且つ４．２μｍ以下の範囲内の赤外線に対する感度が比較的高くて検出出力が大きい。
従って、上述のように、前記２つの波長域を３．１μｍ以上且つ４．２μｍ以下の範囲内に設定する場合、赤外線検出素子４２ａ，４２ｂを、ＰｂＳ（硫化鉛）又はＰｂＳｅ（セレン化鉛）を赤外線セルとして用いて構成するのが好ましい。 Next, the infrared detection elements 42a and 42b will be described.
Infrared detectors 42a and 42b configured using PbS (lead sulfide) or PbSe (lead selenide) as an infrared cell emit infrared rays in the range of 1.5 μm to 5.0 μm at an operating temperature of normal temperature (300K). Further, the sensitivity to infrared rays within the range of 3.1 μm or more and 4.2 μm or less is relatively high and the detection output is large.
Therefore, as described above, when the two wavelength ranges are set in the range of 3.1 μm or more and 4.2 μm or less, the infrared detection elements 42a and 42b are made of PbS (lead sulfide) or PbSe (lead selenide). Is preferably used as an infrared cell.

そして、このコンロでは、赤外線強度検出部４０の温度、具体的には、前記赤外線検出素子４２ａ，４２ｂの温度を検出する出力補正用の温度検出手段としての温度検出用サーミスタ５１と、その温度検出用サーミスタ５１の検出情報に基づいて赤外線強度検出部４０の出力を補正する出力補正手段としての出力補正部５２とが備えられている。   In this stove, the temperature detecting thermistor 51 as temperature detecting means for output correction for detecting the temperature of the infrared intensity detecting unit 40, specifically, the temperature of the infrared detecting elements 42a and 42b, and its temperature detection And an output correction unit 52 as output correction means for correcting the output of the infrared intensity detection unit 40 based on the detection information of the thermistor 51.

説明を加えると、図１、図２に示すように赤外線検出素子４２ａ，４２ｂの近くに温度検出用サーミスタ５１が設けられて、赤外線検出素子４２ａ，４２ｂの雰囲気温度を検出する構成となっている。そして、その温度検出用サーミスタ５１の検出値が出力補正部５２に入力され、出力補正部５２は温度検出用サーミスタ５１の検出値に基づいて、赤外線検出素子４２ａ，４２ｂにて検出される赤外線強度の検出値（出力）を補正するようになっている。   In addition, as shown in FIGS. 1 and 2, a temperature detection thermistor 51 is provided in the vicinity of the infrared detection elements 42a and 42b to detect the ambient temperature of the infrared detection elements 42a and 42b. . Then, the detection value of the temperature detection thermistor 51 is input to the output correction unit 52, and the output correction unit 52 detects the infrared intensity detected by the infrared detection elements 42a and 42b based on the detection value of the temperature detection thermistor 51. The detected value (output) is corrected.

前記出力補正部５２における補正処理について説明すると、赤外線検出素子４２ａ，４２ｂの温度の変化と感度との相関関係が予め求められて記憶されている。例えば、図６に赤外線検出素子４２ａ，４２ｂを、ＰｂＳ（硫化鉛）を赤外線セルとして用いて構成した場合における相関関係の一例を示している。これは、同じ強さの赤外線を受光したときの素子温度の変化と出力値との相関関係を、素子温度が２５℃のときの出力値を基準値として、素子温度が変化したときの出力値と基準値との比率（相対感度）で表したものである。そして、実際の素子温度を温度検出用サーミスタ５１にて検出して、その検出温度と図６に示すような相関関係とから、素子温度の変化による誤差を無くすように赤外線強度の検出値（出力）を補正するのである。従って、赤外線強度検出部４０の温度変化にかかわらず正確な赤外線強度を検出することが可能となる。   The correction process in the output correction unit 52 will be described. The correlation between the change in temperature of the infrared detection elements 42a and 42b and the sensitivity is obtained in advance and stored. For example, FIG. 6 shows an example of the correlation when the infrared detection elements 42a and 42b are configured using PbS (lead sulfide) as an infrared cell. This is the correlation between the change in element temperature when receiving infrared rays of the same intensity and the output value, and the output value when the element temperature changes with the output value when the element temperature is 25 ° C. as the reference value. And the ratio (relative sensitivity) of the reference value. Then, the actual element temperature is detected by the temperature detection thermistor 51, and the detected value (output) of the infrared intensity is eliminated from the detected temperature and the correlation as shown in FIG. ) Is corrected. Therefore, it is possible to detect the correct infrared intensity regardless of the temperature change of the infrared intensity detector 40.

上述したように赤外線強度検出部４０の温度の検出情報に基づいて赤外線強度検出部４０の出力を補正する構成としても、温度検出用サーミスタ５１による温度検出の誤差や個々の検出素子毎の特性に個体差もあるので、検出精度を向上させるためには、赤外線強度検出部４０の温度はできるだけ変化しないようにすることが好ましい。   As described above, even when the output of the infrared intensity detection unit 40 is corrected based on the temperature detection information of the infrared intensity detection unit 40, the temperature detection error by the temperature detection thermistor 51 and the characteristics of each individual detection element are considered. Since there are individual differences, in order to improve the detection accuracy, it is preferable that the temperature of the infrared intensity detection unit 40 is not changed as much as possible.

そこで、本発明に係るコンロは、前記赤外線強度検出部４０の温度上昇を抑制すべく前記赤外線強度検出部４０を冷却する冷却手段Ｒが設けられている。具体的には、前記冷却手段Ｒが、前記赤外線強度検出部４０に対して冷却用の風を通風する通風手段ＴＵとしての送風ブロア５３を備えて構成されている。   Therefore, the stove according to the present invention is provided with a cooling means R for cooling the infrared intensity detection unit 40 so as to suppress the temperature rise of the infrared intensity detection unit 40. Specifically, the cooling means R includes a blower blower 53 as a ventilation means TU for passing cooling air to the infrared intensity detection unit 40.

すなわち、図１に示すように、赤外線強度検出部４０が汁受皿８の下方側に汁受皿８との間に空間が形成されるように少し離間させて設けられている。尚、赤外線強度検出部４０は図示しない支持部にて支持されることになる。そして、この赤外線強度検出部４０に対して、そのパッケージング４３の上方側の空間並びに下方側の空間を水平方向に通風する状態で冷却用の風を通風させる送風ブロア５３が設けられている。このように送風ブロア５３により冷却用の風を通風させることで、赤外線強度検出部４０の周囲の空間における高温の空気が横側外方に吹き飛ばされて赤外線強度検出部４０にバーナ３０からの熱が伝わり難くなり、又、赤外線強度検出部４０自身からの放熱も促されて、赤外線強度検部出部４０の温度上昇が抑制されることになる。   That is, as shown in FIG. 1, the infrared intensity detection unit 40 is provided on the lower side of the juice receiving tray 8 so as to be slightly separated from the juice receiving tray 8. The infrared intensity detector 40 is supported by a support unit (not shown). A blowing blower 53 is provided for the infrared intensity detection unit 40 to allow cooling air to flow in the horizontal direction through the space above and below the packaging 43. In this way, by blowing the cooling air with the blower blower 53, the high-temperature air in the space around the infrared intensity detection unit 40 is blown outward laterally, and the infrared intensity detection unit 40 receives heat from the burner 30. In addition, heat radiation from the infrared intensity detection unit 40 itself is also urged, and an increase in the temperature of the infrared intensity detection unit output unit 40 is suppressed.

又、前記赤外線強度検出部４０の外周部を断熱材５４にて覆うように構成されている。すなわち、図２に示すように、赤外線強度検出部４０におけるパッケージング４３の開口部４４を除く外周部全域にわたって断熱材５４が設けられ、バーナ３０による熱がパッケージング４３の内部に伝わり難くなるように構成されている。   The outer peripheral portion of the infrared intensity detection unit 40 is configured to be covered with a heat insulating material 54. That is, as shown in FIG. 2, the heat insulating material 54 is provided over the entire outer peripheral portion except the opening 44 of the packaging 43 in the infrared intensity detection unit 40, so that the heat from the burner 30 is not easily transmitted to the inside of the packaging 43. It is configured.

次に、前記温度検出部５０により被加熱物Ｎの温度を求める処理について説明する。尚、以下の説明では、前記２つの波長域をλ１，λ２にて示す。ちなみに、波長域λ２の方が波長域λ１よりも長波長側になる。
図４に、予め実験により求めた被加熱物Ｎの温度と前記赤外線強度検出部４０における前記２つの波長域λ１，λ２夫々についての出力値（赤外線強度に対応する）との関係を示す。ちなみに、この図４に示す関係は、放射率（輻射率）が０．９２の被加熱物を用いて得たものである。
又、図５に、被加熱物Ｎの温度と、赤外線強度検出部４０における波長域λ１に対応する出力値と波長域λ２に対応する出力値との比である出力比（前記赤外線強度比に対応する）との関係（以下、温度対赤外線強度比の関係と記載する場合がある）を示す。 Next, a process for obtaining the temperature of the object to be heated N by the temperature detection unit 50 will be described. In the following description, the two wavelength regions are denoted by λ1 and λ2. Incidentally, the wavelength region λ2 is longer than the wavelength region λ1.
FIG. 4 shows the relationship between the temperature of the object to be heated N obtained in advance by experiments and the output values (corresponding to the infrared intensity) for each of the two wavelength regions λ1 and λ2 in the infrared intensity detector 40. Incidentally, the relationship shown in FIG. 4 is obtained by using a heated object having an emissivity (radiation rate) of 0.92.
FIG. 5 shows an output ratio (infrared intensity ratio) which is a ratio of the temperature of the object N to be heated and the output value corresponding to the wavelength region λ1 and the output value corresponding to the wavelength region λ2 in the infrared intensity detector 40. (Corresponding) (hereinafter may be referred to as a relationship of temperature to infrared intensity ratio).

ちなみに、この図５に示す温度対赤外線強度比の関係は、以下のようにして求めたものである。
即ち、放射率の異なる複数の被加熱物夫々について、被加熱物の温度を複数の温度に異ならせて、複数の温度夫々について前記出力比を得る。そして、そのように放射率εの異なる複数の被加熱物について得たデータに基づいて、温度と出力比との関係の近似式を求めて、その求めた近似式を温度対赤外線強度比の関係としてある。従って、放射率εが種々に異なる被加熱物Ｎ夫々の温度対赤外線強度比の関係を、共通の１つの温度対赤外線強度比の関係とすることができるのである。 Incidentally, the relationship between temperature and infrared intensity ratio shown in FIG. 5 is obtained as follows.
That is, for each of a plurality of heated objects having different emissivities, the output ratio is obtained for each of the plurality of temperatures by changing the temperature of the heated object to a plurality of temperatures. Then, based on the data obtained for a plurality of objects to be heated with different emissivities ε, an approximate expression of the relationship between the temperature and the output ratio is obtained, and the obtained approximate expression is related to the relationship between the temperature and the infrared intensity ratio. It is as. Therefore, the relationship between the temperature-to-infrared intensity ratios of the heated objects N having various emissivities ε can be made into a common temperature-to-infrared intensity ratio relationship.

上述のように求めた図５に示す如き温度対赤外線強度比の関係を、前記温度検出部５０の記憶部（図示省略）に記憶させてある。   The relationship between the temperature and infrared intensity ratio as shown in FIG. 5 obtained as described above is stored in the storage unit (not shown) of the temperature detection unit 50.

そして、前記温度検出部５０は、赤外線強度検出部４０における波長域λ１に対応する出力値と波長域λ２に対応する出力値との出力比（前記赤外線強度比に対応する）を求め、記憶している温度対赤外線強度比の関係から被加熱物Ｎの温度を求める。このような出力値の比をとることで被加熱物Ｎの温度をその被加熱物Ｎの放射率に依存することなく正確に検出することができるのである。   Then, the temperature detection unit 50 obtains and stores an output ratio (corresponding to the infrared intensity ratio) between the output value corresponding to the wavelength region λ1 and the output value corresponding to the wavelength region λ2 in the infrared intensity detection unit 40. The temperature of the object to be heated N is determined from the relationship between the temperature to infrared intensity ratio. By taking such a ratio of output values, the temperature of the heated object N can be accurately detected without depending on the emissivity of the heated object N.

前記温度検出部５０にて求められた温度は、前記燃焼制御部３に出力され、燃焼制御部３は、この温度検出部５０にて求められる温度に基づいて、前記燃料供給断続弁６、前記燃料供給量調節弁７等を制御することにより、被加熱物Ｎの自動温度制御、被加熱物Ｎの過昇温時の緊急停止制御等を行うように構成されている。   The temperature obtained by the temperature detection unit 50 is output to the combustion control unit 3, and the combustion control unit 3 performs the fuel supply intermittent valve 6, the By controlling the fuel supply amount adjusting valve 7 and the like, automatic temperature control of the heated object N, emergency stop control when the heated object N is overheated, and the like are performed.

〔別実施形態〕
次に別実施形態を説明する。 [Another embodiment]
Next, another embodiment will be described.

（１） 上記各実施形態では、赤外線強度検出手段としての赤外線強度検出部のパッケージングの外周部を覆う状態で断熱材を備える構成を例示したが、パッケージング自身を断熱機能を有する断熱材を用いて構成してもよい。 (1) In the above embodiments has illustrated an arrangement comprising a heat insulating material so as to cover the outer peripheral portion of the packaging of the infrared intensity detecting unit of the infrared intensity detecting means, a heat insulating material having a packaging itself Insulated You may comprise.

（２） 上記各実施形態では、出力補正用の温度検出手段として、温度検出用サーミスタを用いる構成としたが、サーミスタに限らず熱電対やその他の検出素子を用いてもよい。 (2) In each of the above embodiments, the temperature detection thermistor is used as the temperature detection means for output correction. However, the present invention is not limited to the thermistor, and a thermocouple or other detection element may be used.

（３） 上記各実施形態では、出力補正用の温度検出手段と、その検出情報に基づいて赤外線強度検出手段の出力を補正する出力補正手段とを備える構成と例示したが、これらを備えない構成としてもよい。 (3) In each of the above embodiments, the temperature correction means for correcting the output and the output correction means for correcting the output of the infrared intensity detection means based on the detection information are exemplified. It is good.

（４） 上記各実施形態では、前記加熱手段として、混合気を環状ケーシング部材から内向きに噴出させて燃焼させる内炎式バーナにて構成するものを示したが、混合気を外向き上方に噴出させるブンゼン燃焼式のバーナを備えたコンロとして構成してもよい。 (4) In each of the above-described embodiments, the heating means is constituted by an internal flame type burner that injects the air-fuel mixture inward from the annular casing member and burns it. You may comprise as a stove provided with the bunsen combustion type burner to eject.

（５） 上記各実施形態では、赤外線強度検出手段が、２個のバンドパスフィルタ４１ａ，４１ｂを通過した赤外線を各別に検出する２個の赤外線検出素子４２ａ，４２ｂを備えて、被加熱物Ｎから放射される赤外線における互いに異なる２つの波長域夫々についての赤外線強度を検出するように構成したが、このような構成に代えて、１つの赤外線検出素子に対して２個のバンドパスフィルタが交互に作用するように位置を切り換えて、その切り換えた状態の夫々における赤外線検出素子の検出値を用いて、互いに異なる波長域の赤外線強度を検出する構成としてもよい。 (5) In each of the above embodiments, the infrared intensity detection means includes the two infrared detection elements 42a and 42b that individually detect the infrared rays that have passed through the two bandpass filters 41a and 41b, and the heated object N In the infrared rays radiated from the infrared ray, the infrared intensity is detected for each of two different wavelength ranges. Instead of such a configuration, two band-pass filters are alternately provided for one infrared detection element. The positions may be switched so as to act on each other, and the infrared intensity in different wavelength ranges may be detected using the detection value of the infrared detection element in each of the switched states.

（６） 上記各実施形態では、前記被加熱物温度検出手段により温度を求める処理として、被加熱物の温度を２つの波長域夫々についての赤外線強度の比に基づいて求める構成としたが、このような構成に代えて次のように構成してもよい。
例えば、予め、放射率の異なる複数の被加熱物を用いて、被加熱物の温度を複数の温度に異ならせて、複数の温度夫々について、前記複数の波長域夫々についての赤外線強度を得て、そのように得た前記複数の波長域夫々についての赤外線強度を、前記複数の温度夫々に対応させた状態でマップデータにして記憶させておく。そして、前記マップデータから、前記赤外線強度検出手段にて検出される前記複数の波長域夫々についての赤外線強度の関係に一致する又は類似する赤外線強度の関係を求めると共に、その求めた赤外線強度の関係に対応する温度を求め、その求めた温度を被加熱物の温度とするように構成する。
ちなみに、この場合は、前記複数の波長域としては、上記の各実施形態のように２つの波長域でも良いし、３つ以上の波長域でも良い。 (6) In each of the above embodiments, the temperature of the heated object is determined based on the ratio of the infrared intensity for each of the two wavelength ranges as the process of obtaining the temperature by the heated object temperature detecting means. Instead of such a configuration, the following configuration may be used.
For example, by using a plurality of objects to be heated having different emissivities, the temperatures of the objects to be heated are changed to a plurality of temperatures, and for each of a plurality of temperatures, an infrared intensity for each of the plurality of wavelength ranges is obtained. The infrared intensity for each of the plurality of wavelength ranges thus obtained is stored as map data in a state corresponding to each of the plurality of temperatures. Then, from the map data, an infrared intensity relationship that matches or is similar to the infrared intensity relationship for each of the plurality of wavelength ranges detected by the infrared intensity detection means, and the determined infrared intensity relationship The temperature corresponding to is obtained, and the obtained temperature is set as the temperature of the object to be heated.
Incidentally, in this case, the plurality of wavelength ranges may be two wavelength ranges as in the above embodiments, or may be three or more wavelength ranges.

（７） 上記各実施形態では、前記赤外線強度検出手段が、前記天板に形成された加熱用の開口を通して被加熱物から放射された赤外線の強度を検出するように構成されるものを例示したが、このような構成に限らず、前記加熱用の開口の横側方において前記天板に光透過用の窓部を形成して、前記赤外線強度検出手段がこの光透過用の窓部を通して被加熱物から放射された赤外線の強度を検出するように構成としてもよい。 (7) In each of the above embodiments, the infrared intensity detecting means is configured to detect the intensity of infrared rays radiated from the heated object through the heating opening formed in the top plate. However, the present invention is not limited to this, and a light transmitting window is formed on the top plate at the side of the heating opening, and the infrared intensity detecting means is covered through the light transmitting window. It is good also as a structure so that the intensity | strength of the infrared rays radiated | emitted from the heating object may be detected.

（８） 上記各実施形態では、前記加熱手段としてガス燃焼式のバーナにて構成したが、加熱手段はバーナに限定されるものではなく、例えば赤熱発光するハロゲンランプを用いたもの、電気抵抗線を内蔵したシーズヒータを用いたもの、又は、電磁誘導加熱（通常、「ＩＨ」と呼ばれる）を行う磁界発生コイルを用いたもの等、電気式加熱部にて構成しても良い。
このように前記加熱手段を電気式加熱部にて構成する場合、前記赤外線強度検出部４０にて検出する前記複数の波長域は、赤外線の波長域のうち、空気中のＣＯ2とＨ2Ｏによる赤外線の吸収が無い又は弱い範囲内に設定すると、被加熱物の温度を空気中のＣＯ2やＨ2Ｏに影響されること無く精度良く検出することが可能となる。
ちなみに、赤外線の波長範囲のうち、１．５μｍ以上且つ１．８μｍ以下の範囲、２．１μｍ以上且つ２．４μｍ以下の範囲、３．５μｍ以上且つ４．２μｍ以下の範囲、及び９．０μｍ以上且つ１１．５μｍ以下の範囲では、空気中のＣＯ2とＨ2Ｏによる赤外線の吸収が無い又は弱いので、前記複数の波長域としては、１．５μｍ以上且つ１．８μｍ以下の範囲内、２．１μｍ以上且つ２．４μｍ以下の範囲内、３．５μｍ以上且つ４．２μｍ以下の範囲内、及び９．０μｍ以上且つ１１．５μｍ以下の範囲内に設定する。 (8) In each of the above embodiments, a gas combustion burner is used as the heating unit. However, the heating unit is not limited to the burner. For example, a halogen lamp that emits red heat, an electric resistance wire It is also possible to use an electric heating unit such as one using a sheathed heater incorporating a magnetic field or one using a magnetic field generating coil that performs electromagnetic induction heating (usually called “IH”).
As described above, when the heating unit is configured by an electric heating unit, the plurality of wavelength ranges detected by the infrared intensity detection unit 40 include CO 2 and H 2 O in the air in the infrared wavelength range. If it is set within a range where there is no or weak absorption of infrared rays due to, the temperature of the object to be heated can be accurately detected without being affected by CO 2 or H 2 O in the air.
Incidentally, in the infrared wavelength range, the range of 1.5 μm or more and 1.8 μm or less, the range of 2.1 μm or more and 2.4 μm or less, the range of 3.5 μm or more and 4.2 μm or less, and the range of 9.0 μm or more Also, in the range of 11.5 μm or less, there is no or weak infrared absorption by CO 2 and H 2 O in the air, so that the plurality of wavelength ranges are within the range of 1.5 μm to 1.8 μm. It is set within the range of 1 μm or more and 2.4 μm or less, within the range of 3.5 μm or more and 4.2 μm or less, and within the range of 9.0 μm or more and 11.5 μm or less.

コンロの概略構成図Schematic configuration diagram of the stove 赤外線強度検出手段の縦断面図Longitudinal sectional view of infrared intensity detection means 火炎から放射される赤外線の放射強度スペクトル分布を示す図Figure showing the infrared radiation intensity spectrum distribution emitted from the flame 被加熱物の温度と赤外線強度検出部の出力との関係を示す図The figure which shows the relationship between the temperature of a to-be-heated material, and the output of an infrared intensity detection part 被加熱物の温度と赤外線強度検出部の出力比との関係を示す図The figure which shows the relationship between the temperature of to-be-heated material and the output ratio of an infrared intensity detection part 素子温度と相対感度との相関関係を示す図Diagram showing correlation between element temperature and relative sensitivity

１ 天板
３０ 加熱手段
４０ 赤外線強度検出手段
４２ａ、４２ｂ 赤外線検出素子
４３ パッケージング
４４ 光入射用の開口部
４５ 駆動部
４７ 支持台
５０ 被加熱物温度検出手段
５１ 出力補正用の温度検出手段
５２ 出力補正手段
５４ 断熱材
Ｎ 被加熱物
ＴＵ 通風手段 1 Top plate 30 Heating means 40 Infrared intensity detection means
42a, 42b Infrared detector
43 Packaging
44 Opening for light incidence
45 Drive unit
47 support base 50 heated object temperature detection means 51 temperature detection means for output correction 52 output correction means 54 heat insulating material N heated object TU ventilation means

Claims (3)

被加熱物を加熱する加熱手段と、天板の下方側に位置して前記被加熱物から放射された赤外線の強度を検出する赤外線強度検出手段と、その赤外線強度検出手段により検出された赤外線の強度に基づいて前記被加熱物の温度を検出する被加熱物温度検出手段とを備えたコンロであって、
前記赤外線強度検出手段が、光入射用の開口部を備えたパッケージング内に、前記開口部を通じて入射する赤外線を検出可能な赤外線検出素子を備え、前記被加熱物から放射される赤外線における互いに異なる複数の波長域夫々についての赤外線強度を検出するように構成され、
前記被加熱物温度検出手段が、前記赤外線強度検出手段にて検出される前記複数の波長域夫々についての赤外線強度の関係に基づいて、前記被加熱物の温度を検出するように構成されているところ、
前記パッケージングが、前記パッケージングの上方側並びに下方側に空間が形成されるように設けられ、
前記赤外線検出素子が、前記パッケージング内で周囲に空間が形成された支持台の上に設けられるとともに、前記赤外線検出素子の駆動部が前記パッケージング内に設けられ、
前記赤外線強度検出手段の温度上昇を抑制すべく前記赤外線強度検出手段を冷却する冷却手段が設けられ、
前記冷却手段が、前記パッケージングの上方側の空間並びに下方側の空間を通風する状態で冷却用の風を通風する通風手段を備えて構成されているコンロ。 A heating means for heating the object to be heated; an infrared intensity detecting means for detecting the intensity of infrared light emitted from the object to be heated, which is located below the top plate; and an infrared ray detected by the infrared intensity detecting means. A stove provided with a heated object temperature detecting means for detecting the temperature of the heated object based on intensity,
The infrared intensity detection means includes an infrared detection element capable of detecting infrared rays incident through the opening in a packaging having an opening for light incidence, and the infrared rays emitted from the heated object are different from each other. Configured to detect infrared intensity for each of a plurality of wavelength ranges;
The heated object temperature detecting means is configured to detect the temperature of the heated object based on the relationship of the infrared intensity for each of the plurality of wavelength ranges detected by the infrared intensity detecting means. However,
The packaging is provided such that a space is formed on the upper side and the lower side of the packaging,
The infrared detection element is provided on a support base in which a space is formed in the packaging, and a drive unit for the infrared detection element is provided in the packaging.
Cooling means for cooling the infrared intensity detecting means is provided to suppress the temperature rise of the infrared intensity detecting means ,
A stove comprising the cooling means comprising ventilation means for ventilating cooling air in a state where the upper space and the lower space of the packaging are ventilated . 前記赤外線強度検出手段の外周部を断熱材にて覆うように構成されている請求項１記載のコンロ。 The stove of Claim 1 comprised so that the outer peripheral part of the said infrared intensity detection means may be covered with a heat insulating material. 前記赤外線強度検出手段の温度を検出する出力補正用の温度検出手段と、その出力補正用の温度検出手段の検出情報に基づいて前記赤外線強度検出手段の出力を補正する出力補正手段とが備えられている請求項１又は２記載のコンロ。 Output correction temperature detection means for detecting the temperature of the infrared intensity detection means, and output correction means for correcting the output of the infrared intensity detection means based on detection information of the output correction temperature detection means. The stove according to claim 1 or 2 .
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