JP2015093178A - Temperature detection device for heating cooker and usage for the same, and temperature detector for heating cooker - Google Patents

Temperature detection device for heating cooker and usage for the same, and temperature detector for heating cooker Download PDF

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JP2015093178A
JP2015093178A JP2013236340A JP2013236340A JP2015093178A JP 2015093178 A JP2015093178 A JP 2015093178A JP 2013236340 A JP2013236340 A JP 2013236340A JP 2013236340 A JP2013236340 A JP 2013236340A JP 2015093178 A JP2015093178 A JP 2015093178A
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JP6324029B2 (en
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賀裕 高砂
Yoshihiro Takasago
賀裕 高砂
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Harman Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a temperature detection device which has a "pan existence" detection function detecting existence or non-existence of a heating-target material and a temperature detection function for detecting a temperature of the heating-target material placed on the pan, and which is capable of detecting even open fault of a resistance detection element.SOLUTION: Heating-target detection means 4 is arranged in parallel between a resistance detection element 5 and resistance value detection means 10a, and an auxiliary resistance 9 for detecting fault is provided to the heating-target detection means 4 on the side of the resistance detection element 5 in series with the resistance detection element 5.

Description

本発明は、加熱調理器に固定状に立設される固定側支持体と、前記加熱調理器の載置部に載置される被加熱物の底部が当接するのに伴って押し下げられるように、昇降自在で且つ上方側に復帰付勢された状態で前記固定側支持体の上端部に支持された移動側支持体と、前記移動側支持体の前記被加熱物が当接する部位に当接体を設け、当該当接体の裏面に抵抗検出素子を備えて構成され、前記抵抗検出素子と当該抵抗検出素子の抵抗値を検出する抵抗値検出手段を備え、
前記移動支持体が下側位置に位置する状態で回路を開く被加熱物検出手段を前記抵抗検出素子に対して並列に備えた加熱調理器用の温度検出装置被加熱物検出手段、及びその使用方法に関する。 In the present invention, the fixed side support that is fixedly provided on the heating cooker and the bottom of the object to be heated placed on the placement portion of the heating cooker are pressed down as they come into contact with each other. The movable side support that is supported by the upper end of the fixed side support in a state where it can be moved up and down and is urged to return to the upper side, and the portion of the movable side support that abuts the heated object Provided with a resistance detection element on the back surface of the contact body, the resistance detection element and a resistance value detection means for detecting a resistance value of the resistance detection element,
Temperature detecting device for heating cooker provided with heating object detection means for opening circuit in a state where the moving support is located at a lower position, and a method for using the same. About.

かかる加熱調理器用の温度検出装置は、コンロや炊飯器等の加熱対象である被加熱物を加熱する形態の加熱調理器に使用される。このような加熱調理器は、被加熱物の温度を検出するための温度検出機能と、当該被加熱物が正常に収納・載置されているかを検出する、所謂「鍋あり検出」機能とが備えられている。後者の機能は、真に被加熱物が所定位置に載置されている状態で加熱手段を働かせるための機能であり、前者の機能は、主に、被加熱物の過熱防止を図るための機能である。   Such a temperature detection device for a heating cooker is used in a heating cooker that heats an object to be heated such as a stove or a rice cooker. Such a heating cooker has a temperature detection function for detecting the temperature of the object to be heated and a so-called “hot pot detection” function for detecting whether the object to be heated is normally stored and placed. Is provided. The latter function is a function for operating the heating means in a state where the object to be heated is truly placed at a predetermined position, and the former function is mainly a function for preventing overheating of the object to be heated. It is.

例えば、特許文献１に開示の温度検出装置は、環状の電熱板８０（加熱手段）を備えた炊飯器において、その加熱手段で加熱される内鍋７０（被加熱物に相当）の底部の温度を検出するために用いるものであり、外鍋６０（固定側支持体に相当）内に載置される内鍋７０の底部にホルダ１１（当接体に相当）を当接させることが可能なように、支持筒としての外ケース２０を環状の加熱手段の内部に配設して、温度検出装置にてホルダ１１頭部の温度を被加熱物の温度として検出するようになっている。
このような加熱調理器用の温度検出装置においては、ホルダ１１を上方向に付勢するコイルばね５０（付勢手段に相当）が用いられている（特許文献１）。 For example, in the temperature detection device disclosed in Patent Document 1, in the rice cooker provided with the annular electric heating plate 80 (heating means), the temperature of the bottom of the inner pot 70 (corresponding to an object to be heated) heated by the heating means. The holder 11 (corresponding to the contact body) can be brought into contact with the bottom of the inner pot 70 placed in the outer pot 60 (corresponding to the fixed-side support). As described above, the outer case 20 as a support tube is disposed inside the annular heating means, and the temperature of the head of the holder 11 is detected as the temperature of the object to be heated by the temperature detection device.
In such a temperature detection device for a cooking device, a coil spring 50 (corresponding to a biasing means) that biases the holder 11 upward is used (Patent Document 1).

本明細書の図２（ａ）（ｂ）は特許文献１の図３及び図６を転記したものである。
この特許文献１に開示の温度検出装置では、ホルダ１１の頭部に配置されたサーミスタ４０の抵抗値を検出することにより、内鍋の底部の温度を検出することができる。
一方、このサーミスタ４０に対して並列に接続されるリードスイッチ３０が設けられ、内鍋の外鍋内への載置により、外ケース２０に設けられた磁石２２に、リードスイッチ３０が感応することで、サーミスタ４０との合成抵抗値を検出可能となり、その合成抵抗値に基づいて「鍋あり検出」を行なうことができる。 2 (a) and 2 (b) in this specification are a transcription of FIGS. 3 and 6 of Patent Document 1. FIG.
In the temperature detection device disclosed in Patent Document 1, the temperature of the bottom of the inner pot can be detected by detecting the resistance value of the thermistor 40 disposed on the head of the holder 11.
On the other hand, a reed switch 30 connected in parallel to the thermistor 40 is provided, and the reed switch 30 is sensitive to the magnet 22 provided in the outer case 20 by placing the inner pot in the outer pot. Thus, the combined resistance value with the thermistor 40 can be detected, and “detection with pan” can be performed based on the combined resistance value.

この状態で、合成抵抗値を加熱制御部１００側で検出することにより、内鍋７０の温度（具体的には内鍋の底部の温度）も適切に検出できる。   In this state, by detecting the combined resistance value on the heating control unit 100 side, the temperature of the inner pot 70 (specifically, the temperature of the bottom of the inner pot) can also be detected appropriately.

本明細書の図３は特許文献２の図１１を転記したものである。ただし、サーミスタ５に関しては、二点鎖線で特許文献１の図１に倣って追記した。
特許文献２も同様に、サーミスタ５とリードスイッチ３７との組合せで、所定位置に載 置された状態の鍋の温度を適切に検出することができる。特許文献２に開示の技術では 、サーミスタ５が円筒１７の頭部に設けられるが、リードスイッチ３７は、当該サーミ スタ５のリード線３０の基端側に配置され、リード線３０の下降移動に従ってリードス イッチ３７が移動して、サーミスタ５の抵抗値を検出可能とする構成が採用されている 。 FIG. 3 in this specification is a transcription of FIG. 11 of Patent Document 2. However, the thermistor 5 was additionally written in a two-dot chain line following FIG.
Similarly, Patent Document 2 can appropriately detect the temperature of the pan placed in a predetermined position by the combination of the thermistor 5 and the reed switch 37. In the technique disclosed in Patent Document 2, the thermistor 5 is provided at the head of the cylinder 17, but the reed switch 37 is disposed on the proximal end side of the lead wire 30 of the thermistor 5 and follows the downward movement of the lead wire 30. A configuration is adopted in which the lead switch 37 moves and the resistance value of the thermistor 5 can be detected.

これら両特許文献１、２は温度検出用のサーミスタが正常に働いている状態に関する技術であり、サーミスタが開放故障している或いは短絡故障している場合の故障検出に関しては特に述べられていない。   Both of these Patent Documents 1 and 2 are techniques relating to the state in which the temperature detection thermistor is operating normally, and there is no particular description regarding failure detection when the thermistor has an open failure or a short-circuit failure.

実開平０５−０６０４１５号公報Japanese Utility Model Publication No. 05-060415 特開２００６−３４７８３号公報JP 2006-34783 A

本明細書の図４（ａ）（ｂ）に、特許文献１に開示された温度検出装置の機能構成を模式的に示した。図４（ａ）は、鍋１が所定位置に載置された「鍋あり時」の状態を示す図面であり、図４（ｂ）は、鍋１が載置されていない「鍋なし時」の状態を示す図面である。
これらの図を比較すると、「鍋あり時」は、「鍋なし時」と比較して、移動側支持体２が付勢手段３の付勢力に抗して下降しており、リードスイッチ４が回路を開いて、サーミスタ５の抵抗値を、抵抗値検出手段１０ａにより検出可能な状態にしていることが判る。 4A and 4B of the present specification schematically show the functional configuration of the temperature detection device disclosed in Patent Document 1. FIG. FIG. 4A is a drawing showing a state of “when there is a pan” in which the pan 1 is placed at a predetermined position, and FIG. 4B is “when there is no pan” where the pan 1 is not placed. It is drawing which shows this state.
Comparing these figures, when “with pan” is compared with “without pan”, the moving support 2 is lowered against the biasing force of the biasing means 3, and the reed switch 4 is It can be seen that the circuit is opened and the resistance value of the thermistor 5 is in a state where it can be detected by the resistance value detecting means 10a.

以下、本願が問題とする上述のサーミスタの故障検出技術に関して説明する。
先にも示したように、サーミスタの故障としては「開放故障」と「短絡故障」があるが、現行の技術では「鍋あり時」と「鍋なし時」とにおいて、それぞれの故障が起こっていると、以下のような状況となる。この状況について、図４には、検出可能な情報のみを記載している。 Hereinafter, the above-described thermistor failure detection technique which is a problem of the present application will be described.
As indicated earlier, thermistor failures include "open failure" and "short-circuit failure", but with the current technology, each failure occurs when "with pan" and "without pan". The situation will be as follows. For this situation, FIG. 4 shows only detectable information.

「鍋ありの時」
サーミスタが開放故障
抵抗値検出手段により検出される抵抗値が無限大となり、検出できる。
サーミスタが短絡故障
抵抗値検出手段により検出される抵抗値が、「鍋なし」時と同じ０となり、検出できない。

抵抗値検出手段により検出される抵抗値が、本来のサーミスタの抵抗値ＲＳΩを含み、当該正常抵抗値ＲＳΩに近い一定の範囲内にある場合には、サーミスタは正常であり、「鍋あり」と判定される。 "When there is a pot"
Thermistor is open failure The resistance value detected by the resistance value detection means becomes infinite and can be detected.
Thermistor is short-circuited. The resistance value detected by the resistance value detection means is 0, which is the same as when there is no pan, and cannot be detected.

When the resistance value detected by the resistance value detection means includes the resistance value RSΩ of the original thermistor and is within a certain range close to the normal resistance value RSΩ, the thermistor is normal and “there is a pan” Determined.

「鍋なしの時」
サーミスタが開放故障
抵抗値検出手段により検出される抵抗値が「鍋なし」時の抵抗値と同じ０となり、検出できない。
サーミスタが短絡故障
抵抗値検出手段により検出される抵抗値が「鍋なし」時の抵抗値と同じ０となり、検出できない。

抵抗値検出手段により検出される抵抗値が、０であれば正常で「鍋なし」と判定される。
"When there is no pan"
Thermistor is open failure. The resistance value detected by the resistance value detection means is 0, which is the same as the resistance value when “no pan”, and cannot be detected.
Thermistor is short-circuited. The resistance value detected by the resistance value detection means is 0, which is the same as the resistance value when “no pan”, and cannot be detected.

If the resistance value detected by the resistance value detection means is 0, it is determined as “no pan”.

以上より、抵抗値により温度を検出する温度検出素子として抵抗検出素子を採用する構成では、例えばサーミスタ等を採用することで、温度検出装置の価格は抑えられるが、当該抵抗検出素子の故障検出（特に短絡故障）ができない。   As described above, in the configuration in which the resistance detection element is used as the temperature detection element that detects the temperature based on the resistance value, for example, by adopting a thermistor or the like, the price of the temperature detection device can be suppressed, but failure detection ( In particular, short circuit failure) is not possible.

本発明は、かかる点に着目してなされたものであり、その目的は、被加熱物の有り無しを検出する「鍋あり」検出機能と、載置状態にある被加熱物の温度を検出する温度検出機能とを備えた温度検出装置において、抵抗検出素子の短絡故障をも検出することが可能な温度検出装置を得ることにある。   The present invention has been made paying attention to such a point, and its purpose is to detect the presence / absence of the object to be heated and to detect the temperature of the object to be heated in the loaded state. An object of the present invention is to obtain a temperature detection device capable of detecting even a short-circuit failure of a resistance detection element in a temperature detection device having a temperature detection function.

この目的を達成するために、本発明による加熱調理器用の温度検出装置の第一の特徴構成は、加熱調理器に固定状に立設される固定側支持体と、前記加熱調理器の載置部に載置される被加熱物の底部が当接するのに伴って押し下げられるように、昇降自在で且つ上方側に復帰付勢された状態で前記固定側支持体の上端部に支持された移動側支持体と、前記移動側支持体の前記被加熱物が当接する部位に当接体を設け、当該当接体の裏面に抵抗検出素子を備えて構成され、
前記抵抗検出素子の抵抗値を検出する抵抗値検出手段を備えるとともに、
前記移動支持体が下側位置に位置する状態で回路を開く被加熱物検出手段を前記抵抗検出素子に対して並列に備えた加熱調理器用の温度検出装置であって、
前記抵抗検出素子の一方の端子と並列接続される前記被加熱物検出手段の一方の端子との間に故障検出用の補助抵抗を前記抵抗検出素子に直列に設けた被加熱物検出手段被加熱物検出手段ことを特徴とする。 In order to achieve this object, the first characteristic configuration of the temperature detecting device for a cooking device according to the present invention is a fixed-side support that is fixedly installed on the cooking device, and the mounting of the cooking device. The support is supported by the upper end of the fixed-side support so that it can be raised and lowered and is urged to return upward so that the bottom of the object to be heated placed on the part abuts. A side support, and a contact body is provided at a portion where the heated object of the moving side support contacts, and a resistance detection element is provided on the back surface of the contact body.
While comprising a resistance value detection means for detecting the resistance value of the resistance detection element,
A temperature detection device for a cooking device comprising a heated object detection means for opening a circuit in a state where the movable support is located at a lower position, in parallel with the resistance detection element,
Heated object detecting means heated by providing an auxiliary resistor in series with the resistance detecting element between one terminal of the heated object detecting means connected in parallel with one terminal of the resistance detecting element An object detection means.

本願に係る加熱調理器用の温度検出装置には、従来装置に設けられていた、抵抗検出素子、それと並列接続された被加熱物検出手段及び抵抗値検出手段の他に、故障検出用の補助抵抗が備えられる。この補助抵抗は、被加熱物検出手段に対して抵抗検出素子側に抵抗検出素子と直列に設けられる。結果、先の従来技術の検出形態の記載形式に倣って記載すると、以下のよう働くこととなる。
The temperature detection device for a cooking device according to the present application includes a resistance detection element, a heated object detection means and a resistance value detection means connected in parallel to the resistance detection element provided in the conventional device, and an auxiliary resistor for failure detection. Is provided. The auxiliary resistor is provided in series with the resistance detection element on the resistance detection element side with respect to the object to be heated detection means. As a result, if the description is made following the description format of the detection form of the prior art, the following works.

「鍋ありの時」
抵抗検出素子が開放故障
抵抗値検出手段により検出される抵抗値が無限大となり、検出できる。
抵抗検出素子が短絡故障
抵抗値検出手段により検出される抵抗値が補助抵抗の抵抗値ＲＨとなり、検出できる。

抵抗値検出手段により検出される抵抗値が、正常抵抗値（ＲＳ＋ＲＨ）を含み、当該正常抵抗値に近い一定の範囲内にある場合には、抵抗検出素子は正常であり、鍋ありと判定できる。ここで、抵抗検出素子の抵抗値をＲＳとする。 "When there is a pot"
Resistance detection element is open failure The resistance value detected by the resistance value detection means becomes infinite and can be detected.
The resistance detection element is short-circuited. The resistance value detected by the resistance value detection means becomes the resistance value RH of the auxiliary resistance, and can be detected.

When the resistance value detected by the resistance value detection means includes a normal resistance value (RS + RH) and is within a certain range close to the normal resistance value, the resistance detection element is normal and it can be determined that there is a pan. . Here, the resistance value of the resistance detection element is RS.

「鍋なしの時」
抵抗検出素子が開放故障
抵抗値検出手段により検出される抵抗値が「鍋なし」時の抵抗値と同じ０となり、検出できない。
抵抗検出素子が短絡故障
抵抗値検出手段により検出される抵抗値が「鍋なし」時の抵抗値と同じ０となり、検出できない。

抵抗値検出手段により検出される抵抗値が０であれば、正常で、「鍋なし」と判定できる。 "When there is no pan"
Resistance detection element is open failure The resistance value detected by the resistance value detection means becomes 0, which is the same as the resistance value when “no pan”, and cannot be detected.
The resistance detection element is short-circuited. The resistance value detected by the resistance value detection means is 0, which is the same as the resistance value when “no pan” is detected.

If the resistance value detected by the resistance value detecting means is 0, it is normal and it can be determined that there is no pan.

従って、「鍋なしの時」には、従来同様に検出できないが、「鍋あり時」において「開放故障」と「短絡故障」との両方を抵抗値検出手段により検出される合成抵抗に基づいて有限値として検出することができる。   Therefore, when “without pan” cannot be detected as in the prior art, both “open failure” and “short-circuit failure” in “with pan” are based on the combined resistance detected by the resistance value detecting means. It can be detected as a finite value.

上記第一の特徴構成の加熱調理器用の温度検出装置において、
前記補助抵抗の抵抗値が前記抵抗検出素子の抵抗値に対して、室温に於けるオーム表示の抵抗値で１／１０以下とされることが、本願加熱調理器用の温度検出装置の第二の特徴構成である。 In the temperature detection device for the cooking device of the first characteristic configuration,
The resistance value of the auxiliary resistor is 1/10 or less of the resistance value of the resistance detection element in ohmic display at room temperature, which is the second of the temperature detection device for the cooking device of the present application. It is a feature configuration.

このように、補助抵抗の抵抗値を、抵抗検出素子の抵抗値より十分に小さくすることにより、抵抗値検出手段により検出される合成抵抗値は、事実上、抵抗検出素子の抵抗値に近い値となるため、検出される合成抵抗値から従来型の補助抵抗を使用しない場合に使用してきた抵抗値−温度換算指標に近似の指標を使用して温度を求めることができる。   In this way, by making the resistance value of the auxiliary resistor sufficiently smaller than the resistance value of the resistance detection element, the combined resistance value detected by the resistance value detection means is practically a value close to the resistance value of the resistance detection element. Therefore, the temperature can be obtained from the detected combined resistance value using an index approximate to the resistance value-temperature conversion index that has been used when the conventional auxiliary resistor is not used.

これまで説明してきた加熱調理器用の温度検出装置の使用方法としては、以下のような使用形態とできる。   As a usage method of the temperature detection apparatus for a heating cooker which has been described so far, the following usage forms can be used.

（１） 本願第一又は第二の特徴構成を備えた加熱調理器用の温度検出装置を使用するにあたって、
前記抵抗値検出手段により検出される抵抗値が、前記補助抵抗の抵抗値をＲＨ、前記抵抗検出素子の抵抗値をＲＳとして、正常抵抗値（ＲＳ＋ＲＨ）を含み、当該正常抵抗値に近い一定の範囲内にある場合に、前記抵抗値により被加熱物の温度が検出可能と判定する。 (1) In using the temperature detection device for a heating cooker having the first or second characteristic configuration of the present application,
The resistance value detected by the resistance value detection means includes a normal resistance value (RS + RH), where RH is the resistance value of the auxiliary resistor and RS is the resistance value of the resistance detection element, and is constant and close to the normal resistance value. When it is within the range, it is determined that the temperature of the object to be heated can be detected based on the resistance value.

本願に係る加熱調理器用の温度検出装置では、直列配置される抵抗検出素子と補助抵抗との合成抵抗が抵抗値検出手段により検出される。そして、その合成抵抗値は、抵抗検出素子が正常に働いている状態では合成抵抗（ＲＳ＋ＲＨ）となる。
そこで、抵抗値検出手段により検出される抵抗が、正常抵抗値（ＲＳ＋ＲＨ）を含み、当該正常抵抗値に近い一定の範囲内にある場合に、当該検出される抵抗値により被加熱物の温度が検出可能と判定することができる。ここで、一定の範囲とは、補助抵抗の抵抗値を２０Ω程度、抵抗検出素子の抵抗値を４００ｋΩ程度として、１６８０ｋΩ〜１．８２ｋΩとすることができる。 In the temperature detection apparatus for a heating cooker according to the present application, the combined resistance of the resistance detection element and the auxiliary resistance arranged in series is detected by the resistance value detection means. The combined resistance value is a combined resistance (RS + RH) in a state where the resistance detection element is normally operating.
Therefore, when the resistance detected by the resistance value detection means includes a normal resistance value (RS + RH) and is within a certain range close to the normal resistance value, the temperature of the object to be heated is determined by the detected resistance value. It can be determined that detection is possible. Here, the fixed range can be set to 1680 kΩ to 1.82 kΩ, assuming that the resistance value of the auxiliary resistor is about 20Ω and the resistance value of the resistance detection element is about 400 kΩ.

この方法を実施する装置は、これまで説明してきた抵抗値検出手段から抵抗値出力を得て、その抵抗値が、正常抵抗値（ＲＳ＋ＲＨ）を含み、当該正常抵抗値に近い一定の範囲内にある場合に、前記抵抗値により被加熱物の温度が検出可能と判定する判定手段を設けておけばよい。   A device that implements this method obtains a resistance value output from the resistance value detecting means described so far, and the resistance value includes a normal resistance value (RS + RH) and is within a certain range close to the normal resistance value. In some cases, a determination unit that determines that the temperature of the object to be heated can be detected based on the resistance value may be provided.

本願第一又は第二の特徴構成を備えた加熱調理器用の温度検出装置を使用するにあたって、
前記抵抗値検出手段により検出される抵抗値が無限大を含み、所定値以上の範囲内にある場合に、前記抵抗検出素子が開放故障である可能性があると判定し、
前記抵抗値検出手段により検出される抵抗値が０を含み、所定値以下の範囲内にある場合に、前記抵抗検出素子が短絡故障である可能性があると判定する。 In using the temperature detection device for a heating cooker having the first or second characteristic configuration of the present application,
When the resistance value detected by the resistance value detection means includes infinity and is within a range of a predetermined value or more, it is determined that the resistance detection element may have an open failure,
When the resistance value detected by the resistance value detection means includes 0 and falls within a predetermined value or less, it is determined that there is a possibility that the resistance detection element has a short circuit failure.

本願に係る加熱調理器用の温度検出装置では、直列配置される抵抗検出素子と補助抵抗との合成抵抗が抵抗値検出手段により検出される。
そして、その合成抵抗値は、抵抗検出素子が開放故障の場合は無限大となる。
そこで、抵抗値検出手段により検出される抵抗が、無限大を含み、所定値以上の範囲内にある場合に、抵抗検出素子が開放故障状態にあると判定することができる。ここで、所定値とは、補助抵抗の抵抗値を２０Ω程度、抵抗検出素子の抵抗値を４００ｋΩ程度として、４０００ｋΩ程度の抵抗値とすることができる。 In the temperature detection apparatus for a heating cooker according to the present application, the combined resistance of the resistance detection element and the auxiliary resistance arranged in series is detected by the resistance value detection means.
The combined resistance value is infinite when the resistance detection element has an open failure.
Therefore, when the resistance detected by the resistance value detection means includes infinity and is within a predetermined value or more, it can be determined that the resistance detection element is in an open failure state. Here, the predetermined value can be a resistance value of about 4000 kΩ, where the resistance value of the auxiliary resistor is about 20Ω and the resistance value of the resistance detection element is about 400 kΩ.

一方、その合成抵抗値は、抵抗検出素子が短絡故障の場合は合成抵抗０となる。
そこで、抵抗値検出手段により検出される抵抗が、０を含み、所定値以下の範囲内にある場合に、前記抵抗検出素子が短絡故障である可能性があると判定することができる。ここで、所定値とは、補助抵抗の抵抗値を２０Ω程度、抵抗検出素子の抵抗値を４００ｋΩ程度として、３０Ω程度とすることができる。 On the other hand, the combined resistance value is 0 when the resistance detection element has a short circuit failure.
Therefore, when the resistance detected by the resistance value detection means includes 0 and is within a predetermined value or less, it can be determined that there is a possibility that the resistance detection element has a short circuit failure. Here, the predetermined value can be about 30Ω, with the resistance value of the auxiliary resistor being about 20Ω and the resistance value of the resistance detecting element being about 400kΩ.

この方法を実施する装置構成としては、これまで説明してきた抵抗値検出手段から抵抗値出力を得て、その抵抗値が、無限大を含み、所定値以上の範囲内にある場合に、前記抵抗検出素子が開放故障である可能性があると判定し、前記抵抗値検出手段により検出される抵抗値が０を含み、所定値以下の範囲内にある場合に、前記抵抗検出素子が短絡故障である可能性があると判定する判定手段を設けておけばよい。   As an apparatus configuration for carrying out this method, a resistance value output is obtained from the resistance value detecting means described so far, and when the resistance value includes an infinite value and is in a range of a predetermined value or more, the resistance value is obtained. When it is determined that there is a possibility that the detection element has an open fault, and the resistance value detected by the resistance value detection means includes 0 and is within a predetermined value or less, the resistance detection element has a short circuit fault. What is necessary is just to provide the determination means which determines that there exists possibility.

この方法で使用する、
加熱調理器に固定状に立設される固定側支持体と、前記加熱調理器の載置部に載置される被加熱物の底部が当接するのに伴って押し下げられるように、昇降自在で且つ上方側に復帰付勢された状態で前記固定側支持体の上端部に支持された移動側支持体と、前記移動側支持体の前記被加熱物が当接する部位に当接体を設け、当該当接体の裏面に抵抗検出素子を備えて構成され、
前記移動支持体が下側位置に位置する状態で回路を開く被加熱物検出手段を前記抵抗検出素子に対して並列に備えた加熱調理器用の温度検出具の特徴構成は、
前記抵抗検出素子の一方の端子と並列接続される前記被加熱物検出手段の一方の端子との間に故障検出用の補助抵抗を前記抵抗検出素子に直列に設けたこととなる。 Use this method,
It can be raised and lowered so that it is pushed down as the fixed side support that is fixedly mounted on the cooking device and the bottom of the object to be heated placed on the placing unit of the cooking device come into contact with each other. In addition, a moving side support that is supported by the upper end of the fixed side support in a state where the upper side of the fixed side support is biased upward, and a contact body is provided at a position where the heated object of the moving side support contacts. It is configured with a resistance detection element on the back surface of the contact body,
A characteristic configuration of a temperature detector for a heating cooker provided with a heated object detection means for opening a circuit in a state where the movable support is located at a lower position in parallel with the resistance detection element,
An auxiliary resistor for failure detection is provided in series with the resistance detection element between one terminal of the heated object detection means connected in parallel with one terminal of the resistance detection element.

本発明に係る加熱調理器用の温度検出装置の概略構成を示す模式図The schematic diagram which shows schematic structure of the temperature detection apparatus for heating cookers which concerns on this invention 特許文献１に開示の温度検出装置の概略構成を示す図The figure which shows schematic structure of the temperature detection apparatus disclosed by patent document 1 特許文献２に開示の温度検出装置の概略構成を示す図The figure which shows schematic structure of the temperature detection apparatus disclosed by patent document 2 従来技術に係る温度検出装置の概略構成を示す模式図Schematic diagram showing the schematic configuration of a temperature detection device according to the prior art

本願の実施形態を、以下に図面に基づいて説明する。
図１は、先に説明した図４に対応する温度検出装置１００の概略構成を示す模式図である。
同図は、加熱調理器の加熱部の近傍の構造を模式的に示したものであり、図１（ａ）が加熱調理器に加熱対象である鍋１（被加熱物である調理容器の一例）を載置した状態を示しており、図１（ｂ）が鍋１が載置されることなく、移動側支持体２が付勢手段３により上昇移動された状態を示している。 Embodiments of the present application will be described below with reference to the drawings.
FIG. 1 is a schematic diagram showing a schematic configuration of a temperature detection apparatus 100 corresponding to FIG. 4 described above.
The figure schematically shows the structure in the vicinity of the heating section of the heating cooker, and FIG. 1 (a) shows an example of a pot 1 (a cooking container that is an object to be heated) to be heated by the heating cooker. ) Is shown, and FIG. 1B shows a state in which the moving support 2 is moved upward by the urging means 3 without the pan 1 being placed.

本願に係る温度検出装置１００の周部には、上方に載置される鍋１（被加熱物の一例）を加熱するための加熱手段６である環状のヒータが設けられており、鍋１の載置状態で、鍋１の底面がヒータの上面に当接するとともに、温度検出装置１００の移動側支持体２の頭部（当接部８）に当接して、当該移動側支持体２を下降移動するように構成されている。   An annular heater, which is a heating means 6 for heating the pan 1 (an example of an object to be heated) placed above, is provided on the periphery of the temperature detection device 100 according to the present application. In the mounted state, the bottom surface of the pan 1 is in contact with the upper surface of the heater, and is in contact with the head (contact portion 8) of the moving side support 2 of the temperature detecting device 100, and the moving side support 2 is lowered. Is configured to move.

図１に示すように、温度検出装置１００は、上下方向の位置が固定される固定側支持体７に、サーミスタ５を備える当接体８を設けた移動側支持体２を上下動自在に設けると共に、当該当接体８を上方向に付勢する付勢手段３を備え、加熱される被加熱物１に当接した当接体８が、移動側支持体３の上下動可動範囲において前記被加熱物１の上下動に追随して上下して常時前記被加熱物１の底面に当接するように構成されている。   As shown in FIG. 1, the temperature detection apparatus 100 is provided with a movable side support body 2 provided with a contact body 8 provided with a thermistor 5 on a fixed side support body 7 whose position in the vertical direction is fixed so as to be movable up and down. In addition, a biasing means 3 for biasing the abutting body 8 upward is provided, and the abutting body 8 that abuts on the heated object 1 to be heated is within the vertically movable range of the movable support 3. Following the vertical movement of the article 1 to be heated, it is configured to move up and down and always contact the bottom surface of the article 1 to be heated.

さらに、図１からも判明するように、固定側支持体７に、サーミスタ５と当該サーミスタ５の抵抗値を検出する抵抗値検出手段１０ａを備えるとともに、移動側支持体３が前記下側位置に位置する状態で、内部回路を開くリードスイッチ４を、前記サーミスタ５に並列に備えて構成されている。即ち、前記サーミスタ５の両方の端子と前記抵抗値検出手段１０ａの両方の端子との間にリードスイッチ４が並列に配設されている。そして、当該リードスイッチ４に対してサーミスタ５側に、故障検出用の補助抵抗９がサーミスタ５と直列に設けられている。固定側支持体７の所定位置に磁石７ａが設けられ、リードスイッチ４が、図１の構成において下降位置に位置された場合に、リードスイッチ４が磁石７ａに感応して内部回路を開くことで、抵抗値検出手段１０ａによりサーミスタ５と補助抵抗９との合成抵抗Ｒを検出可能となる。   Further, as can be seen from FIG. 1, the fixed support 7 is provided with the thermistor 5 and resistance value detection means 10 a for detecting the resistance value of the thermistor 5, and the movable support 3 is located at the lower position. A reed switch 4 that opens an internal circuit in a positioned state is provided in parallel with the thermistor 5. That is, the reed switch 4 is arranged in parallel between both terminals of the thermistor 5 and both terminals of the resistance value detecting means 10a. An auxiliary resistor 9 for detecting a failure is provided in series with the thermistor 5 on the thermistor 5 side with respect to the reed switch 4. When the magnet 7a is provided at a predetermined position of the fixed support 7 and the reed switch 4 is positioned at the lowered position in the configuration of FIG. 1, the reed switch 4 opens the internal circuit in response to the magnet 7a. The combined resistance R of the thermistor 5 and the auxiliary resistor 9 can be detected by the resistance value detecting means 10a.

図１においては、サーミスタ５とリードスイッチ４とを近接した状態で描いているが、サーミスタ５は当接体８の直下（被加熱物の底に対して当接体８の裏側になる位置）に設ける必要があるが、リードスイッチ４は、特許文献２の図１に示されるように、当接体８からかなり離れた下側の位置に下降・上昇可能に設けてもよいし、特許文献２の図１１に示されるように、下方から横方向にずれた位置に横方向に移動可能に設けてもよい。
移動側支持体２は、特許文献１に示されるように当接体と一体移動する筒体或いは、特許文献２に示されるようにサーミスタ５のリード線を含むものとしてもよい。 In FIG. 1, the thermistor 5 and the reed switch 4 are drawn close to each other, but the thermistor 5 is directly below the contact body 8 (a position behind the contact body 8 with respect to the bottom of the object to be heated). However, as shown in FIG. 1 of Patent Document 2, the reed switch 4 may be provided at a lower position considerably away from the contact body 8 so that it can be lowered and raised. As shown in Fig. 11 of Fig. 2, it may be provided so as to be movable in the horizontal direction at a position shifted in the horizontal direction from below.
The moving side support 2 may include a cylindrical body that moves integrally with the contact body as shown in Patent Document 1 or a lead wire of the thermistor 5 as shown in Patent Document 2.

温度検出装置を構成する各素子の電気的特性は、以下の通りである。   The electrical characteristics of each element constituting the temperature detection device are as follows.

Figure 2015093178
Figure 2015093178

サーミスタ５の抵抗値 ： 室温で４００ｋΩ程度   Resistance value of thermistor 5: about 400 kΩ at room temperature

補助抵抗９の抵抗値ＲＨ：室温で２０Ω   Resistance value RH of auxiliary resistor 9: 20Ω at room temperature

従って、この例では、補助抵抗９の抵抗値ＲＨがサーミスタ５の抵抗値ＲＳに対して、室温に於けるオーム表示の抵抗値とした場合に１０倍以上小さくされている。即ち、（ＲＨ＝２０Ω／ＳＨ＝４００ｋΩ）＜ １/１０となっている。   Therefore, in this example, the resistance value RH of the auxiliary resistor 9 is set to be 10 times or more smaller than the resistance value RS of the thermistor 5 when the resistance value is expressed in ohms at room temperature. That is, (RH = 20Ω / SH = 400 kΩ) <1/10.

さらに、図１からも判明するように、本願に係る温度検出装置１００の制御部１０には、抵抗値検出手段１０ａ、判定手段１０ｂ、温度演算手段１０ｃが設けられている。判定手段１０ｂは、鍋の有無の判定である「鍋あり判定」と故障要因の判定である「故障判定」を行なうように構成されている。
そして、鍋ありの状態で、温度演算手段１０ｃにより演算される温度に従って、加熱制御手段１１が加熱手段６に対する加熱指令を発する構成とされている。 Further, as can be seen from FIG. 1, the control unit 10 of the temperature detection apparatus 100 according to the present application is provided with a resistance value detection means 10a, a determination means 10b, and a temperature calculation means 10c. The determination means 10b is configured to perform "determination with pan" that is determination of presence / absence of a pan and "failure determination" that is determination of a failure factor.
And it is set as the structure by which the heating control means 11 issues the heating command with respect to the heating means 6 according to the temperature calculated by the temperature calculating means 10c in the state with a pan.

以下、ここの手段に関して説明する。
抵抗値検出手段１０ａ
この手段１０ａは、検出回路にかかっている電圧と電流との関係から直列接続されたサーミスタ５と補助抵抗９との合成抵抗Ｒを求める。 Hereinafter, this means will be described.
Resistance value detection means 10a
The means 10a obtains a combined resistance R of the thermistor 5 and the auxiliary resistor 9 connected in series from the relationship between the voltage and current applied to the detection circuit.

判定手段１０ｂ
この手段１０は「鍋あり判定」と「故障判定」とを行なうが、「鍋あり判定」にあっては、抵抗値検出手段１０ａにより検出される抵抗値である合成抵抗値Ｒが、正常抵抗値（ＲＳ＋ＲＨ）を含み、当該正常抵抗値に近い一定の範囲内にある場合に、当該合成抵抗値により被加熱物の温度が検出可能な正常状態と判定する。
ここで、一定の範囲とは、補助抵抗の抵抗値ＲＨを２０Ω程度、室温でのサーミスタの抵抗値ＲＳを４００ｋΩ程度として、１６８０ｋΩ〜１．８２ｋΩとしている。 Determination means 10b
This means 10 performs “determination with pan” and “determination with failure”. In “determination with pan”, the combined resistance value R, which is the resistance value detected by the resistance value detection means 10a, is normal resistance. When it is within a certain range close to the normal resistance value including the value (RS + RH), it is determined that the temperature of the object to be heated is detectable by the combined resistance value.
Here, the fixed range is 1680 kΩ to 1.82 kΩ, where the resistance value RH of the auxiliary resistor is about 20Ω and the resistance value RS of the thermistor at room temperature is about 400 kΩ.

一方「故障判定」にあっては、抵抗値検出手段１０ａにより検出される合成抵抗値Ｒが無限大を含み、所定値以上の範囲内にある場合に、サーミスタ５が開放故障である可能性があると判定する。具体的には、合成抵抗値Ｒが４０００ｋΩ以上であるとき、サーミスタ５が開放故障である可能性があると判定する。   On the other hand, in the “failure determination”, there is a possibility that the thermistor 5 is an open failure when the combined resistance value R detected by the resistance value detecting means 10a includes infinity and is within a predetermined value or more. Judge that there is. Specifically, when the combined resistance value R is 4000 kΩ or more, it is determined that the thermistor 5 may have an open failure.

さらに、抵抗値検出手段１０ａにより検出される抵抗値が０を含み、所定値以下の範囲内にある場合に、前記抵抗検出素子が短絡故障である可能性があると判定する。具体的には、合成抵抗Ｒが３０Ω以下であるとき、抵抗検出素子が短絡故障である可能性があると判定する。   Furthermore, when the resistance value detected by the resistance value detection means 10a includes 0 and is within a predetermined value or less, it is determined that the resistance detection element may have a short circuit failure. Specifically, when the combined resistance R is 30Ω or less, it is determined that there is a possibility that the resistance detection element has a short circuit failure.

温度演算手段１０ｃ
この温度演算手段１０ｃには、抵抗値検出手段１０ａにより検出される合成抵抗値Ｒと温度との変換情報が記憶されており、検出される合成抵抗値Ｒから温度を求める。
この変換情報は、基本的には、本例の場合、補助抵抗９の抵抗値ＲＨがサーミスタ５ の抵抗値ＲＳに対してΩオーダで１０倍以上小さい（１／１０以下）ため、従来使用されてきた変換指標とほぼ同等な指標である。 Temperature calculation means 10c
The temperature calculation means 10c stores conversion information between the combined resistance value R detected by the resistance value detecting means 10a and the temperature, and the temperature is obtained from the detected combined resistance value R.
This conversion information is basically used in the present example because the resistance value RH of the auxiliary resistor 9 is 10 times smaller than the resistance value RS of the thermistor 5 on the order of 10 times or more (1/10 or less). This index is almost equivalent to the conversion index that has been used.

加熱制御手段１１
この加熱制御手段１１には、鍋ありの場合、温度演算手段１０ｃから温度情報が入力され、鍋なしの場合、判定手段１０ｂから鍋なしの情報が入力される。
従って、鍋ありの場合で、所定の調理指令を受けている場合は、温度情報に基づいて加熱指令を生成して加熱手段６に送ることとなる。鍋なしの場合は、鍋ありの情報が入るまで、さらに調理情報を受けるまで待つこととなる。 Heating control means 11
When there is a pan, temperature information is input to the heating control unit 11 from the temperature calculation unit 10c, and when there is no pan, information about the pan is input from the determination unit 10b.
Therefore, when there is a pan and a predetermined cooking command is received, a heating command is generated based on the temperature information and sent to the heating means 6. If there is no pan, you will have to wait until you receive the information on the pan and receive further cooking information.

以上の構成により、鍋の有り無しを検出する鍋検出機能と、載置状態にある鍋の温度を検出する温度検出機能を備えた温度検出装置１００において、抵抗検出素子の開放故障をも検出することが可能な温度検出装置を提供することができた。   With the above configuration, the temperature detection device 100 having a pan detection function for detecting the presence / absence of a pan and a temperature detection function for detecting the temperature of the pan in the mounted state also detects an open failure of the resistance detection element. It was possible to provide a temperature detecting device capable of performing the above.

〔別実施形態〕 [Another embodiment]

以下、別実施形態について列挙する。
（１）上記実施形態では、本発明による加熱調理器用の温度検出装置をは、ガスドロップインコンロ、電気コンロ、炊飯器等、被加熱物を加熱手段上に載置して加熱される構成の任意の加熱調理器に適用可能である。
（２）上記の実施形態では、当接体の下部に所謂サーミスタを配置して被加熱物の温度検出の用に供したが、温度に応じてその抵抗値が変わる素子であれば、任意の抵抗検出素子を採用できる。
（３）上記の実施形態では、サーミスタと抵抗値検出手段との間にリードスイッチを配置し、このリードスイッチが当接体の下降に従って、固定側支持体の所定箇所に配置されが磁石に感応して、自身のスイッチを開く（電気的に切断する）構成を示した。
このように、抵抗値検出手段によりサーミスタの抵抗値を検出可能とする構成に関しては、以下のような構成を採用することもできる。
ａ リードスイッチと磁石との間に一定の距離を設けて固定側支持体に配置しておき、リードスイッチと磁石とのみでは、リードスイッチが閉成されたままの構成を採用する。そして、移動側支持体と一体に移動する磁気遮蔽体を、リードスイッチと磁石との間に進入可能に構成し、当接体（移動側支持体）の下降位置への移動に伴って当該磁気遮蔽体が両者間に進入して、リードスイッチが開成されるものとすることもできる。
ｂ リードスイッチと磁石とを固定側支持体に配置しておき、移動側支持体と一体に移動する磁気遮蔽体が、リードスイッチと磁石との間に進入した状態でリードスイッチが開閉されており、当接体（移動側支持体）の下降位置への移動に伴って当該磁気遮蔽体が両者間から離脱して、リードスイッチが閉成されるものとすることもできる。 Hereinafter, other embodiments will be listed.
(1) In the above embodiment, the temperature detecting device for a heating cooker according to the present invention has a configuration in which an object to be heated is placed on a heating means, such as a gas drop-in stove, an electric stove, or a rice cooker. It can be applied to any cooking device.
(2) In the above-described embodiment, a so-called thermistor is disposed below the contact body and used for temperature detection of the object to be heated. However, any element can be used as long as its resistance value changes according to the temperature. A resistance detection element can be employed.
(3) In the above embodiment, a reed switch is disposed between the thermistor and the resistance value detecting means, and the reed switch is disposed at a predetermined position of the fixed support as the abutting member descends. Then, the configuration of opening its own switch (electrically disconnecting) was shown.
As described above, the following configuration can be adopted for the configuration in which the resistance value of the thermistor can be detected by the resistance value detecting means.
(a) A fixed distance is provided between the reed switch and the magnet and the fixed switch is disposed on the fixed support, and the reed switch is closed with only the reed switch and the magnet. A magnetic shield that moves integrally with the moving support is configured to be able to enter between the reed switch and the magnet, and the magnetic shield is moved as the abutment (moving support) moves to the lowered position. It is also possible that the reed switch is opened when the shield enters between them.
b The reed switch and magnet are placed on the fixed support, and the reed switch is opened and closed with the magnetic shield that moves integrally with the movable support entering between the reed switch and the magnet. As the abutting body (moving side support) moves to the lowered position, the magnetic shield can be separated from the both, and the reed switch can be closed.

１ 鍋（被加熱物）
２ 移動側支持体
３ 付勢手段
４ リードスイッチ（被加熱物検知手段）
５ サーミスタ（抵抗検出素子）
６ ヒータ（加熱手段）
７ 固定側支持体
７ａ 磁石
８ 当接体
９ 故障検出用の補助抵抗
１０ 制御部
１０ａ 抵抗値検出手段
１０ｂ 判定手段
１００ 温度検出装置 1 Pot (to be heated)
2 Moving side support 3 Biasing means 4 Reed switch (object to be heated detection means)
5 Thermistor (resistance detection element)
6 Heater (heating means)
7 fixed side support 7a magnet 8 contact body 9 auxiliary resistance 10 for failure detection control unit 10a resistance value detection means 10b determination means 100 temperature detection device

Claims (5)

加熱調理器に固定状に立設される固定側支持体と、前記加熱調理器の載置部に載置される被加熱物の底部が当接するのに伴って押し下げられるように、昇降自在で且つ上方側に復帰付勢された状態で前記固定側支持体の上端部に支持された移動側支持体と、前記移動側支持体の前記被加熱物が当接する部位に当接体を設け、当該当接体の裏面に抵抗検出素子を備えて構成され、
前記抵抗検出素子の抵抗値を検出する抵抗値検出手段を備えるとともに、
前記移動支持体が下側位置に位置する状態で回路を開く被加熱物検出手段を前記抵抗検出素子に対して並列に備えた加熱調理器用の温度検出装置であって、
前記抵抗検出素子の一方の端子と並列接続される前記被加熱物検出手段の一方の端子との間に故障検出用の補助抵抗を前記抵抗検出素子に直列に設けた加熱調理器用の温度検出装置。 It can be raised and lowered so that it is pushed down as the fixed side support that is fixedly mounted on the cooking device and the bottom of the object to be heated placed on the placing unit of the cooking device come into contact with each other. In addition, a moving side support that is supported by the upper end of the fixed side support in a state where the upper side of the fixed side support is biased upward, and a contact body is provided at a position where the heated object of the moving side support contacts. It is configured with a resistance detection element on the back surface of the contact body,
While comprising a resistance value detection means for detecting the resistance value of the resistance detection element,
A temperature detection device for a cooking device comprising a heated object detection means for opening a circuit in a state where the movable support is located at a lower position, in parallel with the resistance detection element,
A temperature detecting device for a cooking device, wherein a fault detecting auxiliary resistor is provided in series with the resistance detecting element between one terminal of the heated object detecting means connected in parallel with one terminal of the resistance detecting element. . 前記補助抵抗の抵抗値が前記抵抗検出素子の抵抗値に対して、室温に於けるオーム表示の抵抗値で１／１０以下とされる請求項１記載の加熱調理器用の温度検出装置。   The temperature detection device for a heating cooker according to claim 1, wherein the resistance value of the auxiliary resistor is 1/10 or less of the resistance value of the resistance detection element in ohmic display at room temperature. 請求項１又は２記載の加熱調理器用の温度検出装置において、
前記抵抗値検出手段により検出される合成抵抗値が、前記補助抵抗の抵抗値をＲＨ、前記抵抗検出素子の抵抗値をＲＳとして、正常抵抗値ＲＳ＋ＲＨを含み、当該正常抵抗値に近い一定の範囲内にある場合に、
前記被加熱物が前記当接体上に載置され、
前記合成抵抗値により被加熱物の温度が検出可能と判定する加熱調理器用の温度検出装置の使用方法。 In the temperature detection apparatus for the heating cooker according to claim 1 or 2,
The combined resistance value detected by the resistance value detection means includes a normal resistance value RS + RH, where RH is the resistance value of the auxiliary resistor and RS is the resistance value of the resistance detection element, and is a certain range close to the normal resistance value If it is in
The object to be heated is placed on the contact body;
A method of using a temperature detection device for a cooking device that determines that the temperature of an object to be heated is detectable based on the combined resistance value. 請求項１又は２記載の加熱調理器用の温度検出装置において、
前記抵抗値検出手段により検出される抵抗値が、無限大を含み、所定値以上である場合に、前記抵抗検出素子が開放故障である可能性があると判定し、
前記抵抗値検出手段により検出される抵抗値が、０を含み、所定値以下である場合に、前記抵抗検出素子が短絡故障である可能性があると判定する加熱調理器用の温度検出装置の使用方法。 In the temperature detection apparatus for the heating cooker according to claim 1 or 2,
When the resistance value detected by the resistance value detection means includes infinity and is equal to or greater than a predetermined value, it is determined that the resistance detection element may have an open failure,
Use of a temperature detection device for a heating cooker that determines that the resistance detection element may have a short-circuit failure when a resistance value detected by the resistance value detection means includes 0 and is equal to or less than a predetermined value. Method. 加熱調理器に固定状に立設される固定側支持体と、前記加熱調理器の載置部に載置される被加熱物の底部が当接するのに伴って押し下げられるように、昇降自在で且つ上方側に復帰付勢された状態で前記固定側支持体の上端部に支持された移動側支持体と、前記移動側支持体の前記被加熱物が当接する部位に当接体を設け、当該当接体の裏面に抵抗検出素子を備えて構成され、
前記移動支持体が下側位置に位置する状態で回路を開く被加熱物検出手段を前記抵抗検出素子に対して並列に備えた加熱調理器用の温度検出具であって、
前記抵抗検出素子の一方の端子と並列接続される前記被加熱物検出手段の一方の端子との間に故障検出用の補助抵抗を前記抵抗検出素子に直列に設けた加熱調理器用の温度検出具。 It can be raised and lowered so that it is pushed down as the fixed side support that is fixedly mounted on the cooking device and the bottom of the object to be heated placed on the placing unit of the cooking device come into contact with each other. In addition, a moving side support that is supported by the upper end of the fixed side support in a state where the upper side of the fixed side support is biased upward, and a contact body is provided at a position where the heated object of the moving side support contacts. It is configured with a resistance detection element on the back surface of the contact body,
A temperature detector for a heating cooker provided with a heated object detecting means for opening a circuit in a state where the movable support is located at a lower position in parallel with the resistance detection element,
A temperature detector for a cooking device, wherein an auxiliary resistor for failure detection is provided in series with the resistance detection element between one terminal of the heated object detection means connected in parallel with one terminal of the resistance detection element. .
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