JPH07227358A - Cooking appliance - Google Patents

Cooking appliance

Info

Publication number
JPH07227358A
JPH07227358A JP2251294A JP2251294A JPH07227358A JP H07227358 A JPH07227358 A JP H07227358A JP 2251294 A JP2251294 A JP 2251294A JP 2251294 A JP2251294 A JP 2251294A JP H07227358 A JPH07227358 A JP H07227358A
Authority
JP
Japan
Prior art keywords
temperature
stone plate
heater
sensor
control means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2251294A
Other languages
Japanese (ja)
Inventor
Akinori Terasaka
彰矩 寺坂
Soichiro Ohama
総一郎 大浜
Tsunemasa Asai
経正 浅井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Tottori Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Sanyo Electric Co Ltd, Tottori Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP2251294A priority Critical patent/JPH07227358A/en
Publication of JPH07227358A publication Critical patent/JPH07227358A/en
Pending legal-status Critical Current

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  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Control Of Resistance Heating (AREA)
  • Baking, Grill, Roasting (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE:To minimize an unevenness of a controlled temperature by a method wherein a heater is provided on the rear surface of a stone plate on the surface of which an object to be cooked is put, and at the same time, a sensor is provided on the same surface on which the object to be cooked is put into a membrane pattern extending to the whole surface of the stone plate. CONSTITUTION:A stone plate 1 is formed into a square shape of an appropriate dimension using mephibolite or lava, etc., and a heater 2 is provided on the rear surface of the stone plate 1. A main body 10 is provided under the stone plate 1, and for which, e.g. an iron plate is formed into a box shape. On the front surface of the main body 10, temperature-setting keys 6, 7 and start key 9 are provided. Also, in order to detect the temperature of the stone plate 1, a temperature detecting means including a sensor 17 is provided. The sensor 17 is provided into a specified membrane pattern on the surface of the stone plate 1, and is formed of a material of which the resistance value varies by the surface temperature of the stone plate 1. Then, a temperature control is performed based on an output of the sensor 17. When the stone plate 1 breaks and the sensor 17 is disconnected, energization of the heater 2 is stopped.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は温度調節手段を有する調
理器に関する。
FIELD OF THE INVENTION The present invention relates to a cooker having a temperature control means.

【0002】[0002]

【従来の技術】従来の調理器は例えば、特開平3−27
7324号公報等に示される様に、鉄板等からなる調理
板と、その裏面に固定されたヒータと、調理板の裏面の
略中心に当接しサーミスタ等からなる温度検知器等によ
り構成されている。しかし、この調理器で肉や野菜等を
調理すると、被調理物に焦げを生じる欠点がある。これ
を解決するために、石板からなる調理板を用いる調理器
が提案されている。そして、この石板の熱容量を大きく
し、焦げを防止するために、10〜40mmと厚いものが
用いられている。
2. Description of the Related Art A conventional cooking device is disclosed, for example, in Japanese Patent Laid-Open No. 3-27.
As disclosed in Japanese Patent No. 7324, it is composed of a cooking plate made of an iron plate and the like, a heater fixed to the back surface of the cooking plate, and a temperature detector made of a thermistor and the like which is in contact with the approximate center of the back surface of the cooking plate. . However, when meat, vegetables and the like are cooked with this cooking device, there is a drawback that the food to be cooked is burnt. In order to solve this, a cooking device using a cooking plate made of a stone plate has been proposed. In order to increase the heat capacity of this stone plate and prevent charring, a thick stone plate of 10 to 40 mm is used.

【0003】[0003]

【発明が解決しようとする課題】しかし上述の調理器で
は、石板の熱容量が大きいため、石板の裏面の中心に設
けられた温度検知器による検知温度と、石板の表面に置
かれた被調理物の表面温度が大きく異なり、被調理物の
温度検知が正確に出来ない第1の欠点がある。更に、ヒ
ータをON−OFF制御しているが、石板の熱容量が大
きくかつ温度検知器と被調理物との距離が長いので、O
N−OFFによる熱伝達の時間遅れが大きいため、石板
の表面に於て、制御温度のばらつきすなわちON時の最
高温度とOFF時の最低温度の差が約100℃となり、
うまく調理出来ない第2の欠点がある。更に石板はひび
が入ったり割れ易いが、石板が割れる時に石板の裏面に
固定されたヒータが破損し感電する危険が生ずる第3の
欠点がある。本発明はかかる従来の欠点を考慮して、被
調理物の温度検知が正確な、かつ制御温度のばらつきの
少ない、かつ石板が割れた時の危険状態を防止する調理
器を提供するものである。
However, in the above cooking device, since the heat capacity of the stone plate is large, the temperature detected by the temperature detector provided at the center of the back surface of the stone plate and the food to be cooked placed on the surface of the stone plate are large. There is a first drawback that the temperature of the food to be cooked cannot be accurately detected because the surface temperatures of the foods differ greatly. Further, although the heater is ON-OFF controlled, since the heat capacity of the stone plate is large and the distance between the temperature detector and the food to be cooked is long, O
Since the time delay of heat transfer due to N-OFF is large, the difference in control temperature on the surface of the stone plate, that is, the difference between the maximum temperature when ON and the minimum temperature when OFF is about 100 ° C.
The second drawback is that it cannot be cooked well. Further, although the stone plate is easily cracked or cracked, there is a third drawback in that when the stone plate is cracked, the heater fixed to the back surface of the stone plate may be damaged and electric shock may occur. In consideration of the above-mentioned conventional drawbacks, the present invention provides a cooker in which the temperature of an object to be cooked is accurately detected, the control temperature varies little, and a dangerous state when a stone plate is cracked is prevented. .

【0004】[0004]

【課題を解決するための手段】本発明は上述の課題を解
決するために、表面に被調理物が置かれる石板と、石板
の裏面に設けられたヒータと、石板の温度を設定する温
度設定手段と、石板の温度を検知する温度検知手段と、
温度設定手段および温度検知手段の各々の出力に応じて
ヒータへの通電を制御する制御手段とを備え、温度検知
手段は、石板の表面に所定の薄膜パターンに設けられ、
かつ石板の表面温度により抵抗値が変化するセンサーを
有するものである。更に望しくは、センサーが断線して
いる場合に、制御手段はヒータへの通電を停止する様に
制御するものである。
In order to solve the above-mentioned problems, the present invention has a stone plate on which a food is placed, a heater provided on the back face of the stone plate, and a temperature setting for setting the temperature of the stone plate. Means and temperature detecting means for detecting the temperature of the stone plate,
It comprises a control means for controlling the energization of the heater according to the output of each of the temperature setting means and the temperature detecting means, the temperature detecting means is provided in a predetermined thin film pattern on the surface of the stone plate,
Moreover, it has a sensor whose resistance value changes depending on the surface temperature of the stone plate. More preferably, when the sensor is broken, the control means controls to stop energizing the heater.

【0005】[0005]

【作用】上述の様に本発明では、センサーは被調理物が
置かれる石板と同一表面に設けられ、かつ石板の表面全
体に薄膜パターンとして設けられているので、石板の表
面に広範囲に密着出来るから、センサーによる検知温度
は被調理物の表面温度と略同一になり、制御温度のばら
つきが小さくなる。
As described above, according to the present invention, the sensor is provided on the same surface as the stone plate on which the food is placed and is provided as a thin film pattern on the entire surface of the stone plate, so that the sensor can be adhered to the surface of the stone plate in a wide range. Therefore, the temperature detected by the sensor is approximately the same as the surface temperature of the cooking object, and the variation in control temperature is reduced.

【0006】更に望しくは、石板が割れている場合にセ
ンサーが断線する事により、ヒータへの通電を停止す
る。この様に制御する事により、石板が割れた結果ヒー
タが破損し感電する危険な状態を排除出来る。
More preferably, when the stone plate is cracked, the sensor is disconnected so that the power supply to the heater is stopped. By controlling in this manner, it is possible to eliminate a dangerous state in which the heater is damaged and the electric shock is caused as a result of the stone plate being broken.

【0007】[0007]

【実施例】以下に本発明の第1実施例を図1と図2に従
い説明する。図1は本実施例に係る調理器の斜視図、図
2はその調理器の電気回路図である。これらの図に於
て、石板1は例えば縦が300mm、横が300mm、厚さ
が20mmの大きさであり、角閃石や溶岩石等を用いる事
が出来、必要に応じて石材にうわぐすりを塗って焼いた
陶板を用いる事が出来る。そして、被調理物(図示せ
ず)が石板1の表面上に置かれる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view of a cooking device according to this embodiment, and FIG. 2 is an electric circuit diagram of the cooking device. In these figures, the stone plate 1 is, for example, 300 mm in length, 300 mm in width, and 20 mm in thickness, and amphibole or lava stone can be used. You can use a porcelain plate painted and baked. Then, an object to be cooked (not shown) is placed on the surface of the stone plate 1.

【0008】ヒータ2は石板1の裏面に設けられ、例え
ばヒータ線を鉄管に収納し、ヒータ線と鉄管との隙間を
絶縁物で封止されたものであり、石板1の裏面との接触
面積を増やす様に蛇行した形状をしている。ヒータ2は
例えば石板1の裏面にセメント等により固定されている
が、必要に応じて石板1の中に埋め込まれても良い。ヒ
ータ2の先端にはプラグ(図示せず)が取付けられ、そ
のプラグの周囲に絶縁物が封止され、それらにより接続
部3、4が構成されている。
The heater 2 is provided on the back surface of the stone plate 1, for example, the heater wire is housed in an iron pipe, and the gap between the heater wire and the iron pipe is sealed with an insulator. It has a meandering shape so as to increase. The heater 2 is fixed to the back surface of the stone plate 1 by cement or the like, but may be embedded in the stone plate 1 if necessary. A plug (not shown) is attached to the tip of the heater 2, and an insulating material is sealed around the plug to form the connecting portions 3 and 4.

【0009】温度設定手段5は温度設定キー6、7より
なり、温度設定を高温または低温にする場合に、各々温
度設定キー6又は7を押下げれば良い。温度設定手段5
によるキー入力信号I1は、マイクロコンピュータ等か
らなる制御手段8に入力される。
The temperature setting means 5 comprises temperature setting keys 6 and 7, and when the temperature is set to a high temperature or a low temperature, the temperature setting key 6 or 7 may be pushed down. Temperature setting means 5
The key input signal I 1 is input to the control means 8 including a microcomputer or the like.

【0010】スタートキー9を押下げる事により、スタ
ートキー入力信号I2は制御手段8に入力される。
By depressing the start key 9, the start key input signal I 2 is input to the control means 8.

【0011】本体10は石板1の下に設けられ、例えば
鉄板等を箱型に形成されたものであり、その正面に温度
設定キー6、7とスタートキー9が取付けられており、
その底面に脚11が取付けられている。表示部12は複
数の発光ダイオードランプ13(図2では簡単のために
1個しか図示していない)が本体10の正面に取付けら
れたものである。
The main body 10 is provided under the stone plate 1 and is formed of, for example, an iron plate in a box shape. Temperature setting keys 6 and 7 and a start key 9 are attached to the front surface of the main body 10.
The legs 11 are attached to the bottom surface thereof. The display unit 12 has a plurality of light emitting diode lamps 13 (only one is shown in FIG. 2 for simplification) mounted on the front surface of the main body 10.

【0012】温度検知手段14は石板1の温度を検知す
るものであり、制御手段8を駆動するための電源線15
と接地線16との間に直列接続されたセンサー17(R
1)と、抵抗18(R2)と、それらの中間と制御手段8
とを結ぶリード線19からなる。
The temperature detecting means 14 detects the temperature of the slab 1, and a power supply line 15 for driving the control means 8.
Sensor 17 (R
1 ), the resistor 18 (R 2 ), and their intermediate and control means 8
It is composed of a lead wire 19 that connects to and.

【0013】センサー17は石板1の表面に所定の薄膜
パターンに設けられ、かつ石板1の表面温度により抵抗
値が変化する材質からなる。具体的には、センサー17
は例えば、マンガン又はコバルト又はニッケル又は鉄等
遷移金属の酸化物がドープされたセラミックスからな
り、その抵抗値は絶対温度の2乗に反比例して小さくな
る。そして蒸着法又はスパッタ法により、石板1の表面
に数μm〜数10μmの厚さに形成されている。またセ
ンサー17は石板1の表面との接触面積を増やす様に、
平面から見て略U字状に形成されている。センサー17
の先端にはプラグ(図示せず)が取付けられ、そのプラ
グの周囲に絶縁物が封止され、それらにより接続部2
0、21が構成されている。
The sensor 17 is provided on the surface of the stone plate 1 in a predetermined thin film pattern and is made of a material whose resistance value changes depending on the surface temperature of the stone plate 1. Specifically, the sensor 17
Is made of, for example, ceramics doped with an oxide of a transition metal such as manganese, cobalt, nickel, or iron, and its resistance value decreases in inverse proportion to the square of the absolute temperature. Then, it is formed on the surface of the stone plate 1 to a thickness of several μm to several tens of μm by a vapor deposition method or a sputtering method. Also, the sensor 17 increases the contact area with the surface of the stone plate 1,
It is formed in a substantially U shape when viewed from a plane. Sensor 17
A plug (not shown) is attached to the tip of the plug, and an insulating material is sealed around the plug, whereby the connecting portion 2
0 and 21 are configured.

【0014】温度検知手段14の抵抗18による分圧が
リード線19を介して、制御手段8に入力信号I3とし
て入力されている。
The voltage divided by the resistance 18 of the temperature detecting means 14 is input to the control means 8 as an input signal I 3 via the lead wire 19.

【0015】制御器22は例えば2つのサイリスタ2
3、24を逆並列に接続したものであり、制御手段8か
らの出力信号O1が抵抗R3を介してサイリスタ23、2
4にゲート電流を与えている。また、制御手段8からの
出力信号O2が発光ダイオードランプ13に印加されて
いる。この制御器22はヒータ2に直列接続され、交流
電源25から交流電圧が印加されている。電源26は1
次側に交流電圧が印加され、2次側に約5Vの直流電圧
を供給するものである。以上の部品により本実施例の調
理器が構成されている。
The controller 22 is, for example, two thyristors 2
3 and 24 are connected in antiparallel, and the output signal O 1 from the control means 8 passes through the resistor R 3 and the thyristors 23 and 2 are connected.
A gate current is given to the No. 4. The output signal O 2 from the control means 8 is applied to the light emitting diode lamp 13. The controller 22 is connected to the heater 2 in series, and an AC voltage is applied from an AC power supply 25. Power supply 26 is 1
An AC voltage is applied to the secondary side, and a DC voltage of about 5V is supplied to the secondary side. The cooking device of this embodiment is configured by the above components.

【0016】次に、この調理器の動作を図2と図3に従
い説明する。図3は制御手段8のフローチャートであ
る。これらの図に於て、まず調理器の電源プラグ(図示
せず)が電源コンセントに接続され、電源投入され開始
する(S1)。
Next, the operation of this cooking device will be described with reference to FIGS. FIG. 3 is a flowchart of the control means 8. In these figures, first, a power plug (not shown) of the cooking device is connected to a power outlet and power is turned on to start (S1).

【0017】そして、スタートキー9が押下げられてい
ると判定されると(S2)、温度設定(T1℃)がなさ
れる(S3)。すなわち、温度設定手段5から制御手段
8に入力信号I1が入力され記憶される。そして表示部
12に於て、上述の温度設定により、例えば所定の位置
にある発光ダイオードランプ13が点滅する。
When it is determined that the start key 9 is depressed (S2), the temperature is set (T 1 ° C) (S3). That is, the input signal I 1 is input from the temperature setting means 5 to the control means 8 and stored. Then, in the display unit 12, the light emitting diode lamp 13 at a predetermined position, for example, blinks due to the above temperature setting.

【0018】次に温度検知(T2℃)がなされる(S
4)。すなわち、温度検知手段14から制御手段8に入
力信号I3が入力される。
Next, temperature detection (T 2 ° C) is performed (S
4). That is, the input signal I 3 is input from the temperature detecting means 14 to the control means 8.

【0019】そして、入力信号I1と入力信号I3との差
を示す電圧が、制御手段8から出力信号O1として出力
され、ゲート電流としてサイリスタ23、24に入力さ
れ、ヒータ温度制御が行われる(S5)。すなわち、ヒ
ータ2が通電され石板1の温度が上がり、センサー17
の温度が上がり、センサー17の抵抗値R1が小さくな
る。その結果、抵抗18による分圧が大きくなり、入力
信号I3が大きくなり出力信号O1が小さくなり、ゲート
電流値が小さくなる。そのため、サイリスタ23、24
に接続されたヒータ2が位相制御され、すなわち、導通
角が小さくなり、ヒータ2での消費電力が減り、石板1
の温度上昇カーブが緩くなる。
Then, the voltage indicating the difference between the input signal I 1 and the input signal I 3 is output from the control means 8 as the output signal O 1 and is input to the thyristors 23 and 24 as the gate current to control the heater temperature. (S5). That is, the heater 2 is energized to raise the temperature of the stone plate 1, and the sensor 17
Temperature rises, and the resistance value R 1 of the sensor 17 decreases. As a result, the voltage division by the resistor 18 increases, the input signal I 3 increases, the output signal O 1 decreases, and the gate current value decreases. Therefore, the thyristors 23, 24
The phase of the heater 2 connected to is controlled, that is, the conduction angle is reduced, the power consumption of the heater 2 is reduced, and the stone board 1
The temperature rise curve of the becomes loose.

【0020】次に、温度検知値(T2℃)が温度設定値
(T1℃)以上であると判定されると(S6)、ヒータ
2への通電を停止する(S7)。そして、発光ダイオー
ドランプ13が点滅から点灯に変化し、石板1の温度が
設定温度に達した事を使用者に知らせる。すなわち、T
2℃がT1℃以上になると、制御手段8の入力信号I3
入力信号I1に達すると、制御手段8内で予じめプログ
ラムされた内容に基づいて、出力信号O1をゼロにし、
出力信号O2への出力を開始する。その結果、サイリス
タ23、24へのゲート電流の供給が停止し、ヒータ2
への通電が停止する(S7)。
Next, when it is determined that the temperature detection value (T 2 ° C) is equal to or higher than the temperature set value (T 1 ° C) (S6), the power supply to the heater 2 is stopped (S7). Then, the light emitting diode lamp 13 changes from blinking to lighting, and notifies the user that the temperature of the stone plate 1 has reached the set temperature. That is, T
When the input signal I 3 of the control means 8 reaches the input signal I 1 when the temperature of 2 ° C. becomes equal to or higher than T 1 ° C., the output signal O 1 is set to zero on the basis of the contents preprogrammed in the control means 8. ,
The output to the output signal O 2 is started. As a result, the supply of the gate current to the thyristors 23 and 24 is stopped, and the heater 2
Energization is stopped (S7).

【0021】更に、時間が経過すると、石板1の温度が
下がり、T2℃がT1℃より低くなったと判定されると
(S8)、再びヒータ温度制御を行い(S5)、ヒータ
2が位相制御されて通電する。
Further, when time elapses, the temperature of the stone plate 1 is lowered, and when it is determined that T 2 ° C is lower than T 1 ° C (S8), heater temperature control is performed again (S5), and the heater 2 is phased. It is controlled and energized.

【0022】次に、上述の位相制御について、図4の電
圧波形図に従い説明する。この図に於て、横軸は経過時
間、縦軸はヒータ2に印加する電圧を示す。位相制御が
なされてない時は、50HZ又は60HZの周波数にて略
サインカーブの波形である。
Next, the above-mentioned phase control will be described with reference to the voltage waveform diagram of FIG. In this figure, the horizontal axis represents the elapsed time and the vertical axis represents the voltage applied to the heater 2. When the phase control is not performed, a substantially sinusoidal waveform at a frequency of 50H Z or 60H Z.

【0023】しかし図3のステップ(S5)で述べた様
に、石板1の温度が上がり、ゲート電流値が小さくなる
と、ヒータ2に供給される電圧の導通角Aは小さくな
る。その結果、ヒータ2での消費電力(Bに相当する部
分)が減る。そして、検知温度T2℃が設定温度T1℃に
近づく程、サイリスタ23、24へのゲート電流が小さ
くなるので、ヒータ2での消費電力が減り、オーバーシ
ュート(ヒータ2を停止した時に、検知温度T2℃が設
定温度T1℃を越える値)が小さくなる。
However, as described in step (S5) in FIG. 3, when the temperature of the stone plate 1 rises and the gate current value decreases, the conduction angle A of the voltage supplied to the heater 2 decreases. As a result, the power consumption of the heater 2 (the portion corresponding to B) is reduced. Then, as the detected temperature T 2 ° C approaches the set temperature T 1 ° C, the gate current to the thyristors 23 and 24 becomes smaller, so that the power consumption in the heater 2 decreases and overshoot (when the heater 2 is stopped, the detection is performed). The value at which the temperature T 2 ° C exceeds the set temperature T 1 ° C) becomes smaller.

【0024】次に、この調理器に於ける表面温度の特性
を図5に従い説明する。この図に於て、設定温度は約2
20℃であり、横軸は経過時間である。縦軸は石板1の
表面の5箇所に熱電対を固定し、各々の温度を測定した
時の、その温度の平均値を示す。この特性図より、制御
温度のばらつき、すなわちON時の最高温度とOFF時
の最低温度の差Cが約20℃であり、従来の約1/5で
ある。なお、以上の説明に於て、この調理器では位相制
御を例示したが、本発明はこれに限定されるものでな
く、ON−OFF制御やインバータ制御を行っても良
い。
Next, the characteristics of the surface temperature of this cooker will be described with reference to FIG. In this figure, the set temperature is about 2
20 ° C., and the horizontal axis represents elapsed time. The vertical axis represents the average value of the temperatures when thermocouples were fixed at five points on the surface of the stone plate 1 and the respective temperatures were measured. From this characteristic diagram, the variation of the control temperature, that is, the difference C between the maximum temperature when ON and the minimum temperature when OFF is about 20 ° C., which is about ⅕ of the conventional value. In the above description, phase control is exemplified in this cooker, but the present invention is not limited to this, and ON-OFF control or inverter control may be performed.

【0025】更に、本発明の第2実施例を図2と図6に
従い説明する。図6は本実施例に係る調理器の制御手段
8aのフローチャートである。この図に於て第1実施例
と同様に、電源投入され開始し(S1)、スタートキー
9が押下げられていると(S2)、温度設定(T1℃)
がなされる(S3)。すなわち温度設定に対応した入力
信号I1が制御手段8aに入力され記憶される。
Further, a second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a flowchart of the control means 8a of the cooking device according to this embodiment. In this figure, as in the first embodiment, when the power is turned on and started (S1), and the start key 9 is depressed (S2), the temperature is set (T 1 ° C).
Is performed (S3). That is, the input signal I 1 corresponding to the temperature setting is input to and stored in the control means 8a.

【0026】次に、温度検知(T2℃)がなされる(S
4)。すなわち、温度検知手段14から制御手段8aに
入力信号I3が入力される。
Next, temperature detection (T 2 ° C) is performed (S
4). That is, the input signal I 3 is input from the temperature detecting means 14 to the control means 8a.

【0027】その後、センサー17が断線しているか否
かが判定される(S5)。すなわち制御手段8a内で予
じめプログラムされた内容に基づいて、入力信号I3
電圧がゼロか否かが判定される。
After that, it is judged whether or not the sensor 17 is broken (S5). That is, it is determined whether or not the voltage of the input signal I 3 is zero on the basis of the contents programmed beforehand in the control means 8a.

【0028】もし、上述のステップ(S5)がYESと
判定されると、ヒータ2への通電を停止する(S6)。
すなわち、石板2にひびが入っていたり又は割れている
場合に、石板2の表面に薄膜パターンとして形成された
センサー17が断線する。この時、温度検知手段14の
回路が開放するので、抵抗18による分圧がゼロにな
り、入力信号I3がゼロになる。そして、制御手段8a
内で予じめプログラムされた内容に基づいて、制御手段
8aの出力信号O1がゼロとなり、サイリスタ23、2
4へのゲート電流がゼロになり、ヒータ2への通電を停
止する。
If the above step (S5) is determined to be YES, the power supply to the heater 2 is stopped (S6).
That is, when the stone plate 2 is cracked or cracked, the sensor 17 formed as a thin film pattern on the surface of the stone plate 2 is broken. At this time, since the circuit of the temperature detecting means 14 is opened, the voltage division by the resistor 18 becomes zero and the input signal I 3 becomes zero. And the control means 8a
The output signal O 1 of the control means 8a becomes zero on the basis of the contents programmed beforehand in the thyristors 23, 2
The gate current to 4 becomes zero, and the power supply to the heater 2 is stopped.

【0029】もし、センサー17が断線していないと判
定されると(S5)、ヒータ温度制御(S7)がなされ
る。すなわち、制御手段8aの入力信号I3がゼロでな
いと判定されると、入力信号I1と入力信号I3との差を
示す電圧が、出力信号O1として出力され、ヒータ2が
通電され、その後温度制御される。
If it is determined that the sensor 17 is not broken (S5), heater temperature control (S7) is performed. That is, when it is determined that the input signal I 3 of the control means 8a is not zero, the voltage indicating the difference between the input signal I 1 and the input signal I 3 is output as the output signal O 1 , and the heater 2 is energized, After that, the temperature is controlled.

【0030】その後は第1実施例と同様に、T2≧T1
を判定され(S8)、YESならばヒータ2への通電を
停止する(S9)。更に時間が経過すると、石板1の温
度が下がり、T2℃がT1℃より低くなったと判定される
と(S10)、再びヒータ温度制御(S7)が行われ
る。上述の様に第2実施例の調理器は第1実施例の調理
器に比べて、その制御手段8aのプログラムの内容のみ
が異なる。
Thereafter, as in the first embodiment, it is determined whether T 2 ≧ T 1 (S8), and if YES, the power supply to the heater 2 is stopped (S9). When the time further passes, the temperature of the stone plate 1 decreases, and when it is determined that T 2 ° C has become lower than T 1 ° C (S10), the heater temperature control (S7) is performed again. As described above, the cooking device of the second embodiment differs from the cooking device of the first embodiment only in the contents of the program of the control means 8a.

【0031】[0031]

【発明の効果】上述の様に本発明では、センサーは被調
理物が置かれる石板と同一表面に設けられ、かつ石板の
表面全体に薄膜パターンとして設けられている。故に、
センサーは石板の表面に広範囲に密着出来るので、セン
サーによる検知温度は被調理物の表面温度と略同一にな
り、かつ制御温度のばらつきが小さくなる。
As described above, in the present invention, the sensor is provided on the same surface as the stone plate on which the food is placed, and is provided as a thin film pattern on the entire surface of the stone plate. Therefore,
Since the sensor can be brought into close contact with the surface of the stone plate over a wide range, the temperature detected by the sensor is approximately the same as the surface temperature of the food to be cooked, and the variation in control temperature is small.

【0032】更に望しくは、石板にひびが入ったり又は
割れている場合にセンサーが断線する事により、ヒータ
への通電を停止する。この様に制御する事により、石板
が割れた結果ヒータが破損し感電する危険な状態を排除
出来る。
More preferably, when the stone plate is cracked or cracked, the sensor is disconnected, so that the power supply to the heater is stopped. By controlling in this manner, it is possible to eliminate a dangerous state in which the heater is damaged and the electric shock is caused as a result of the stone plate being broken.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第1実施例に係る調理器の斜視図であ
る。
FIG. 1 is a perspective view of a cooker according to a first embodiment of the present invention.

【図2】本発明の第1実施例および第2実施例に係る調
理器の電気回路図である。
FIG. 2 is an electric circuit diagram of the cooker according to the first and second embodiments of the present invention.

【図3】本発明の第1実施例に係る調理器の制御手段の
フローチャートである。
FIG. 3 is a flowchart of the control means of the cooking device according to the first embodiment of the present invention.

【図4】本発明の第1実施例に係る調理器で位相制御さ
れた時にヒータに印加される電圧の波形図である。
FIG. 4 is a waveform diagram of the voltage applied to the heater when the phase is controlled in the cooking device according to the first embodiment of the present invention.

【図5】本発明の第1実施例に係る調理器に於ける表面
温度の特性図である。
FIG. 5 is a characteristic diagram of surface temperature in the cooker according to the first embodiment of the present invention.

【図6】本発明の第2実施例に係る調理器の制御手段の
フローチャートである。
FIG. 6 is a flowchart of the control means of the cooking device according to the second embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 石板 2 ヒータ 5 温度設定手段 8 制御手段 14 温度検知手段 17 センサー 1 Stone Plate 2 Heater 5 Temperature Setting Means 8 Control Means 14 Temperature Detecting Means 17 Sensors

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 H05B 3/00 330 A (72)発明者 浅井 経正 鳥取県鳥取市南吉方3丁目201番地 鳥取 三洋電機株式会社内Continuation of the front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical indication location H05B 3/00 330 A (72) Inventor Tsunemasa Asai 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. In the company

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 表面に被調理物が置かれる石板と、その
石板の裏面に設けられたヒータと、前記石板の温度を設
定する温度設定手段と、前記石板の温度を検知する温度
検知手段と、前記温度設定手段および温度検知手段の各
々の出力に応じて前記ヒータへの通電を制御する制御手
段とを備え、前記温度検知手段は、前記石板の表面に所
定の薄膜パターンに設けられ、かつ前記石板の表面温度
により抵抗値が変化するセンサーを有する事を特徴とす
る調理器。
1. A stone plate on which an object to be cooked is placed, a heater provided on the back face of the stone plate, temperature setting means for setting the temperature of the stone plate, and temperature detecting means for detecting the temperature of the stone plate. A control means for controlling energization to the heater according to the output of each of the temperature setting means and the temperature detecting means, wherein the temperature detecting means is provided in a predetermined thin film pattern on the surface of the stone plate, and A cooker comprising a sensor whose resistance value changes according to the surface temperature of the stone plate.
【請求項2】 前記制御手段は前記センサーが断線して
いる場合に前記ヒータへの通電を停止する様に制御する
事を特徴とする請求項1の調理器。
2. The cooker according to claim 1, wherein the control means controls to stop energizing the heater when the sensor is disconnected.
JP2251294A 1994-02-21 1994-02-21 Cooking appliance Pending JPH07227358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2251294A JPH07227358A (en) 1994-02-21 1994-02-21 Cooking appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2251294A JPH07227358A (en) 1994-02-21 1994-02-21 Cooking appliance

Publications (1)

Publication Number Publication Date
JPH07227358A true JPH07227358A (en) 1995-08-29

Family

ID=12084823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2251294A Pending JPH07227358A (en) 1994-02-21 1994-02-21 Cooking appliance

Country Status (1)

Country Link
JP (1) JPH07227358A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2783664A1 (en) * 1998-09-18 2000-03-24 Frederique Lego Heater for treated or untreated natural stone plate, avoiding temperature shock, for temperature control of cooked food
JP2003144333A (en) * 2001-11-09 2003-05-20 Matsushita Electric Ind Co Ltd Heating cooker and induction heating cooker using the same
JP2012254249A (en) * 2011-06-10 2012-12-27 Sunrise Sangyo Co Ltd Cooking plate
CN106066655A (en) * 2016-08-25 2016-11-02 王秀红 Intelligent digital temperature controller
CN109798990A (en) * 2017-11-17 2019-05-24 美的集团股份有限公司 Array of temperature sensor and heating equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2783664A1 (en) * 1998-09-18 2000-03-24 Frederique Lego Heater for treated or untreated natural stone plate, avoiding temperature shock, for temperature control of cooked food
JP2003144333A (en) * 2001-11-09 2003-05-20 Matsushita Electric Ind Co Ltd Heating cooker and induction heating cooker using the same
JP2012254249A (en) * 2011-06-10 2012-12-27 Sunrise Sangyo Co Ltd Cooking plate
CN106066655A (en) * 2016-08-25 2016-11-02 王秀红 Intelligent digital temperature controller
CN109798990A (en) * 2017-11-17 2019-05-24 美的集团股份有限公司 Array of temperature sensor and heating equipment

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