JPH03131213A - Heating cooker - Google Patents

Heating cooker

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Publication number
JPH03131213A
JPH03131213A JP26946489A JP26946489A JPH03131213A JP H03131213 A JPH03131213 A JP H03131213A JP 26946489 A JP26946489 A JP 26946489A JP 26946489 A JP26946489 A JP 26946489A JP H03131213 A JPH03131213 A JP H03131213A
Authority
JP
Japan
Prior art keywords
heater
temperature
container
sensor
output
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
JP26946489A
Other languages
Japanese (ja)
Inventor
Nobuo Oshima
信夫 大島
Hideo Narita
秀夫 成田
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.)
Hitachi Appliances Inc
Original Assignee
Hitachi Home Tech 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 Hitachi Home Tech Ltd filed Critical Hitachi Home Tech Ltd
Priority to JP26946489A priority Critical patent/JPH03131213A/en
Publication of JPH03131213A publication Critical patent/JPH03131213A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent a heater from being overheated by reducing heating maximum output to the heater according to the temperature rise of the heater detected directly by a sensor fitted on the heater. CONSTITUTION:A controller 1 for controlling output to a heater 2 by signal from a sensor 3 for being fixed on a part of the heater 2 and detecting the temperature of the heater 2, is set. In the controller 1, via a resistor 16, the base of a transistor 10 is connected to the output port D of a micro-computer 14 having function for reducing heating maximum output to the heater 2 according to the temperature rise of the heater 2. When the temperature of the heater 2 detected by the sensor 3 exceeds a limited temperature, then by output from the micro-computer 14, the transistor 10 is turned OFF, and a TRIAC 7 is not to be ignited, and voltage is not applied to the heater 2. As a result, without the delay of reply, the heater is prevented from being overheated.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は一般家庭において使用される加熱!1m 、1
!Ii器に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a heating device used in general households! 1m, 1
! This is related to the II device.

従来の技術 従来この種の加熱調理器しこあっては、例えば本体内部
に取付けた発熱部材(以下、ヒーター)上に容器を着脱
自在に載置する構造のものがあり、容器が調理によって
汚れた場合には手軽に本体から容器を取外して清掃出来
るようになっている。
2. Description of the Related Art Conventional heating cookers of this type have a structure in which a container is removably placed on a heat-generating member (hereinafter referred to as a heater) installed inside the main body, so that the container does not get dirty during cooking. If this happens, you can easily remove the container from the main body and clean it.

発明が解決しようとする課題 しかるに上記の如き構造のものにあっては、■ヒーター
と容器間に異物が挾まったり、ヒーターあるいは容器の
変形などの原因によって両者間に良好な熱伝導がなされ
なくなった場合などにはヒーターが過熱してしまい、ヒ
ーターの寿命を縮めたり、ヒーター周囲の部品の過熱に
よって加熱調理器が動作不良を起したり、 ■電圧変動(電圧上昇)等の要因によって定格の火力よ
り大きくなった場合、調理物が容器から吹きこぼれる等
の不都合が生じる。
Problems to be Solved by the Invention However, with the above-mentioned structure, good heat conduction between the heater and the container may not be achieved due to foreign objects being trapped between the heater and the container, or due to deformation of the heater or the container. In some cases, the heater may overheat, shortening the heater's lifespan, or the heating cooker may malfunction due to overheating of parts around the heater, or voltage fluctuations (voltage rises) or other factors may cause the rated heating power to be reduced. If it becomes larger, problems such as cooked food boiling over from the container will occur.

しかるに実開昭59−193331号公報に提示される
如く、調理鍋(内釜)を加熱する熱板の温度を検知する
バイメタルスイッチと、内釜の温度を検出する温度スイ
ッチとを設け、これら両スイッチににる炊飯時の温度検
出結果を介して炊飯斌に適した電力によって炊飯ヒータ
ーへの通電を制御して内釜の温度り昇を押える如く炊飯
時の供給電力を制別1するものがある。
However, as disclosed in Japanese Utility Model Application No. 59-193331, a bimetal switch that detects the temperature of the hot plate that heats the cooking pot (inner pot) and a temperature switch that detects the temperature of the inner pot are provided, and both of these are provided. There is a device that regulates the power supply during rice cooking by controlling the power supply to the rice cooking heater with the power suitable for the rice cooking pot through the temperature detection result during rice cooking that is input to the switch, so as to suppress the rise in the temperature of the inner pot. be.

また、実開昭62−100126号公報に提示される如
く、例えば炊飯時には、容器(内釜)の温度を検出する
容器センサーによって内釜の温度を検出し。
Further, as disclosed in Japanese Utility Model Application Publication No. 62-100126, for example, when cooking rice, the temperature of the inner pot is detected by a container sensor that detects the temperature of the container (inner pot).

この温度検出結果を介して炊飯量に適した電力によって
炊飯ヒーターへの通電を制御して内釜の温度上昇を押え
たり、または、炊飯完了後の米温か通常の保温温度より
低い温度に低下するように内釜の温度の検出結果を介し
て保温ヒーターへの供給電力を制御して内釜の温度上昇
を押えたりするなどの炊飯及び保温プログラムによって
炊飯時の電力供給を制御するものもある。
Based on this temperature detection result, the power supply to the rice cooking heater is controlled using power appropriate for the amount of rice to be cooked to suppress the rise in temperature of the inner pot, or the rice temperature after rice cooking is completed is lowered to a temperature lower than the normal warming temperature. Some rice cookers control the power supply during rice cooking using a rice cooking and warming program, such as controlling the power supplied to the warming heater based on the detection result of the temperature of the inner pot to suppress the rise in the temperature of the inner pot.

しかし上記の両者とも、■項に記載の如き状態にはある
程度対応出来るとしても、前者にあっては比較的低い温
度(85℃)で熱板の温度を検知するバイメタルスイッ
チが開路してしまい、以後熱板の温度は直接検知しなく
なり、■項に記載の如き状態が発生した場合には上記の
両者とも直接ヒーターの温度を検知するようになってい
ないために。
However, even though both of the above can cope with the situation described in item (■) to some extent, in the former case, the bimetal switch that detects the temperature of the hot plate opens at a relatively low temperature (85 degrees Celsius). After that, the temperature of the hot plate is no longer directly detected, and if the situation described in item (2) occurs, this is because neither of the above cases directly detects the temperature of the heater.

ヒーターと容器間の熱抵抗の為に温・度スイッチや容器
センサーによって検出する内釜の温度検出時の応答遅れ
が生じ、ヒーターが過熱してしまうなどの欠点が解消さ
れない。
Due to the thermal resistance between the heater and the container, there is a delay in the response when detecting the temperature of the inner pot using the temperature/temperature switch or the container sensor, resulting in problems such as overheating of the heater.

更に、特開昭60−241413号公報に提示される如
く、ヒーターへの通電制御をトライアックを用いて行な
うものがあるが1本例の場合ヒーターの温度とは異なる
内鍋の外底部以外の他の部位の温度(第2温度)を検出
し、この第2温度を炊飯完了時に達すべき温度を正常な
炊飯が行なわれない限り達し得ない温度に設定、炊飯時
、この第2温度が検知され、かつ、正常な炊飯が行なわ
れた時に達する内鍋の外底部の温度(第1温度)に達し
たことが検知された時を条件として炊飯完了を検出して
から蒸らしモードに移行するようになっている。
Furthermore, as disclosed in Japanese Patent Application Laid-Open No. 60-241413, there is a method in which the energization to the heater is controlled using a triac, but in one example, the temperature of the heater is different from that of the outer bottom of the inner pot. The second temperature is set to a temperature that cannot be reached unless normal rice cooking is performed, and the second temperature is set to a temperature that cannot be reached unless the rice is cooked normally. , and when it is detected that the temperature of the outer bottom of the inner pot reaches the temperature (first temperature) that is reached when rice is cooked normally, the rice cooking is detected to be completed and then the steaming mode is started. It has become.

即ち、炊飯開始後、一定時間経過前の検知温度が第2温
度以上に達した場合、この時点の検知温度が設定した第
1温度に達したかどうかをもチエツクし、第1温度に達
している場合には炊飯完了として蒸らしモードに移行し
、一方、炊f!yi開始後。
That is, if the detected temperature before a certain period of time has passed after the start of rice cooking reaches the second temperature or higher, it is also checked whether the detected temperature at this point has reached the set first temperature, and if the first temperature has been reached. If the rice is cooked, it is assumed that the rice has been cooked and the mode shifts to steaming mode. After starting yi.

一定時間経過後でも検知温度が第1温度以上に達しない
場合にはそのまま沸騰モードへ移行してカウントを開始
するとともに供給電力を30%にし。
If the detected temperature does not reach the first temperature or higher even after a certain period of time has elapsed, the system directly shifts to the boiling mode, starts counting, and reduces the power supply to 30%.

検知温度が第2温度以上に達するか、カウントが完了す
るまでこの状態を持続させ、前記の何れかの条件が満た
されたと判断された時、炊飯完了として蒸らしモードに
移行するものである。
This state is maintained until the detected temperature reaches a second temperature or higher or the counting is completed, and when it is determined that any of the above conditions is satisfied, the rice cooking is completed and the mode shifts to the steaming mode.

しかし本例による場合でも■項に記載の如き状態が発生
すると、直接ヒーターの温度を検知するようになってい
ないため、ヒーターと容゛器間の熱抵抗の為に第1及び
第2温度検出素子によって検出する内釜の底部及び内釜
の側部の温度検出時の応答遅れが生じ、やはり最悪の場
合にはヒーターが過熱してしまうことが考えられる。
However, even in the case of this example, if the condition described in section (■) occurs, the temperature of the heater is not directly detected, so the first and second temperature detection There is a delay in response when detecting the temperature at the bottom of the inner pot and the side of the inner pot, which is detected by the element, and in the worst case, the heater may overheat.

課題を解決するための手段 本発明は上記の問題点を解決するためになされたもので
あり、本体の内部に取付けられ、かつ。
Means for Solving the Problems The present invention has been made to solve the above problems, and is mounted inside the main body.

容器を着脱自在に載置するヒーターに、ヒーターの温度
を検知する温度検知部材(以下センサー)を取付けると
ともにこのセンサーによって検知するヒーターの温度上
昇に応じてヒーターへの加熱最大出力を減少させる機能
を有する制御装置を本体の内部に設けたものである。
A temperature detection member (hereinafter referred to as a sensor) that detects the temperature of the heater is attached to the heater on which the container is removably placed, and a function is provided to reduce the maximum heating output to the heater according to the rise in temperature of the heater detected by this sensor. A control device with a control device is provided inside the main body.

作用 このようにすることにより、ヒーターと容器間に異物が
挾まったり、ヒーターあるいは容器の変形などの原因に
よって両者間に良好な熱伝導がなされなくなった場合な
どには、ヒーターの過熱をセンサーによって検知し、こ
の検知せる温度上昇に応じてヒーターへの最大出力を制
御’!A ?i %介して減少する如く調節する6 実施例 以下1本発明の一実施例を図面に従って説明する。
By doing this, if a foreign object is caught between the heater and the container, or if the heater or container is deformed and good heat conduction is not achieved between the two, the sensor can detect overheating of the heater. Then, the maximum output to the heater is controlled according to this detected temperature rise! A? 6.Example 1 An example of the present invention will be described below with reference to the drawings.

実施例の構成を示す第1図において、1は本体。In FIG. 1 showing the configuration of the embodiment, 1 is a main body.

2は本体1の内部に取付けたヒーター、3はヒーター2
の一部に固定してヒーター2の温度を検知するセンサー
、4はセンサー3からの信号によってヒーター2への出
力を制御する制御装置、5はヒーター2上に着脱自在に
載置された容器、6は容器5の外底部に接触して容器5
底面の温度を検知する容器センサーである。
2 is a heater installed inside the main body 1, 3 is a heater 2
a sensor fixed to a part of the heater 2 to detect the temperature of the heater 2; 4 a control device controlling the output to the heater 2 based on a signal from the sensor 3; 5 a container removably placed on the heater 2; 6 is in contact with the outer bottom of the container 5 and
This is a container sensor that detects the temperature at the bottom.

第2図は制御装置4に関する本発明の加熱調理器に係る
制御回路図であり、図において8はAC100■の商用
電源で、この電源8にヒーター2と1−ライアック7の
直列回路と、マイコン14などの電源どなる電源回路9
とが並列接続され、かつ、’RtA回路9の出力はマイ
コン14の入カポ−1−Aに1亥続されるとともに人カ
ポ−1= Bにはセンサー3と1入坑12の接続点が、
更に人カポ−+−Cには容器センサー6ど抵抗13の接
続点が夫々接続されている。
FIG. 2 is a control circuit diagram related to the heating cooker of the present invention regarding the control device 4. In the figure, 8 is an AC 100cm commercial power supply, and this power supply 8 is connected to a series circuit of the heater 2 and 1-Liac 7, and a microcomputer. 14 etc. power supply circuit 9
are connected in parallel, and the output of the 'RtA circuit 9 is connected to the input capo 1-A of the microcomputer 14, and the connection point between the sensor 3 and the 1-input 12 is connected to the human capo-1=B. ,
Further, connection points of a container sensor 6 and a resistor 13 are connected to the human capo-+-C, respectively.

10はトライアック7駆動用の1−ランジスタであり、
コレクタが抵抗15を介して[・ライアック7のゲート
に、エミッタがアースに夫々接続さ才しるとともに、1
−ランジスタ10のベースは抵抗16を介してヒーター
2の温度−上昇に応してヒーター2への加熱最大出力を
減少させる機能を有するマイコン14の出カポ−1−D
に接続されている7 第3図は本調理器のシJ作を示すフローチャー1−であ
り、図においてTaはセン(f ++ 3の検知するヒ
ーター2の温度、Tbは容器センサー6の検知する容器
の温度2丁、は調理中の調理物の制御中の温度、■、は
調理の終了を検出した時の温度、■、は温度ヒj−ズが
誤り1作1.たり調理物の吹きこぼれ等を防止する制限
に係る8度を夫々示す。
10 is a 1-transistor for driving the triac 7;
The collector is connected to the gate of the liac 7 through the resistor 15, and the emitter is connected to the ground.
- The base of the transistor 10 is connected via a resistor 16 to the output capo-1-D of the microcomputer 14, which has the function of reducing the maximum heating output to the heater 2 in accordance with the rise in temperature of the heater 2.
Figure 3 is a flowchart 1- showing the operation of this cooker. The temperature of the two containers is the temperature during the control of the food being cooked, ■ is the temperature when the end of cooking is detected, and ■ is the temperature when the temperature is set incorrectly. The 8th degree is the limit for preventing boilovers, etc.

次に本実施例の作用について説明する。Next, the operation of this embodiment will be explained.

まず第2図の制御回路の動作について説明すると、セン
サー3と抵抗12によって分圧された電圧はセンサー3
の検出する温度によって変化してマイコン14の入カポ
−I−Bに入力される。また容器センサー6の検出する
温度も同様にマイコント1の入カポ−1,Cに入力さ九
る。これらの入力によってマイコン14の出カポ−1−
Dから出力され、この出力によって1・・ランジスタ1
0のベースに電流が流れ、トランジスタlOがONシて
トライアツタ7のゲートに電流が流れてトライアツク7
ガ点弧する。
First, to explain the operation of the control circuit shown in FIG. 2, the voltage divided by the sensor 3 and the resistor 12 is
The temperature changes depending on the temperature detected by the microcomputer 14 and is input to the input port I-B of the microcomputer 14. Further, the temperature detected by the container sensor 6 is similarly input to the input ports 1 and C of the microcontroller 1. By these inputs, the output capo-1- of the microcomputer 14 is
It is output from D, and this output causes 1... transistor 1.
Current flows to the base of 0, turns on transistor 10, current flows to the gate of triator 7, and the transistor 10 turns on.
The gas ignites.

従って、ヒーター2に電源8のAClooVが印加され
てヒーター2は加熱する。
Therefore, the AClooV of the power source 8 is applied to the heater 2, and the heater 2 is heated.

一方、マイコン14からの出力によってトランジスタ1
0がOFFの時ばトライアック7ガ点弧しなくなり、ヒ
ーター2には電圧が印加されない。
On the other hand, the output from the microcomputer 14 causes the transistor 1 to
When 0 is OFF, the triac 7 will not fire, and no voltage will be applied to the heater 2.

調理器の使用にあっては第3図に示す如く、まずスター
1=101直後102で温度Ta>温度T、かどうかを
チエツクし、ヒーター2の温度が■、以りかどうかを見
る。この結果温度Taが温度T、以Fの通常の場合は1
04でXWヒーター2を100ヅ)の通電率で通電する
。その後105で温度Tb>温度T1になるまでxwi
oo%の通電率で通電し、温度Tb>温度T1になった
時点で106に進む。106では温度Ta<温度T、の
通常の時、108でXWヒーター2を80%の通電率で
通電する。その?1109でcAIfTb>温度T2に
なるまで108(ヒーター2をXW80%の通電率で通
電)の状態を続け、温度Tb>温度T?、になった時点
で110に進み、ヒーター2への通電をOF F、il
lでタイマー(図示省略)をスタートさせる。 112
でタイマーが13分経過するのを待ち、13分経過した
ところで調理が完了する(113)。
When using the cooker, as shown in FIG. 3, first check whether temperature Ta>temperature T at 102 immediately after star 1=101, and then check whether the temperature of heater 2 is higher than 1. As a result, in the normal case where the temperature Ta is the temperature T and below F, it is 1
At 04, the XW heater 2 is energized at an energization rate of 100㎜. Then at 105 xwi until temperature Tb>temperature T1
The current is applied at an energization rate of oo%, and when the temperature Tb becomes greater than the temperature T1, the process proceeds to step 106. At 106, when temperature Ta<temperature T, normally, at 108, the XW heater 2 is energized at an energization rate of 80%. the? The state of 108 (heater 2 is energized at XW80% energization rate) is continued until cAIfTb>temperature T2 at 1109, and temperature Tb>temperature T? , proceed to step 110 and turn off the power to the heater 2.
Start a timer (not shown) with l. 112
Wait for the timer to elapse for 13 minutes, and the cooking is completed when 13 minutes have elapsed (113).

もしここでヒーター2と容器5 f’、11 kこ異物
が挾まったり、ヒーター2あるいは容器5の変形などで
ヒーター2が必要以上に過熱したり、電圧上昇等で定格
の火力より大きくなって温度Ta>温度T、になった時
、102では103の方ニ進み0.7XW100%の通
電率で、一方、106では107の方に進み、0.7X
W80%の通ff1lで夫々ヒーター2に通電して火力
を減少さぜ、109で温度rb>温度T7になるまで待
つ。
If a foreign object gets caught between the heater 2 and the container 5f', 11k, the heater 2 overheats more than necessary due to deformation of the heater 2 or the container 5, or the heating power exceeds the rated power due to an increase in voltage, etc. When Ta>temperature T, 102 advances toward 103 with a 0.7XW 100% conduction rate, while 106 advances toward 107 and becomes 0.7X
Power is applied to each heater 2 at ff1l of W80% to reduce the thermal power, and wait until temperature rb>temperature T7 at step 109.

発明の効果 以」二1本発明によると、ヒーターに、ヒーターの温度
を検知するセンサーを取イ4けるとともにセンサーによ
って検知するヒーターの温度[1昇に応じてヒーターへ
の加熱最大出力を減少させる機能を有する制御装置を設
(づたので、ヒーターと容)(3間に異物が挾まったり
、ヒーターあるいは容器の変形などの原因によって両名
間に良好な熱伝尊がなされなくなった場合などには、ヒ
ーターのIfi度上昇に応じてヒーターへの最大出力を
制御′A首を介して減少する如く調節するようになり、
ヒーターの過熱を防止し、ヒーターの寿命をも長くする
など安全性及び使い勝手の向上ニジた加熱、!l!]理
器を提供できる。
According to the present invention, a sensor for detecting the temperature of the heater is installed in the heater, and the maximum heating output to the heater is decreased as the temperature of the heater detected by the sensor increases. Install a control device with a functional function (heater and container) (if there is a foreign object caught between the two, or if the heater or container is deformed, etc., good heat transfer between the two is not achieved). , the maximum output to the heater is adjusted to decrease through the control 'A neck according to the increase in the Ifi degree of the heater,
Heating that improves safety and usability by preventing overheating of the heater and extending the life of the heater! l! ] We can provide medical equipment.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例による加熱調理′A:(の概
略の断面図、第2図は同制御回路図。 同動作を示すフローチャートである。 1・・本体、 2・・・発熱部材(ヒーター)、 3・・・温度検知部材(センサー)、 4・・制御装置。 5・・・容器。 第3図は
Fig. 1 is a schematic sectional view of heating cooking 'A: () according to an embodiment of the present invention, and Fig. 2 is a control circuit diagram thereof. Component (heater), 3... Temperature detection member (sensor), 4... Control device. 5... Container. Figure 3 shows

Claims (1)

【特許請求の範囲】[Claims] 本体(1)内部に発熱部材(2)を取付け、この発熱部
材(2)上に容器(5)を着脱自在に載置する加熱調理
器において、発熱部材(2)の温度を検知する温度検知
部材(3)を発熱部材(2)に取付けるとともに温度検
知部材(3)によって検知する発熱部材(2)の温度上
昇に応じて発熱部材(2)への加熱最大出力を減少させ
る機能を有する制御装置(4)を本体(1)内部に設け
たことを特徴とする加熱調理器。
Temperature detection for detecting the temperature of the heat generating member (2) in a heating cooker in which a heat generating member (2) is attached inside the main body (1) and a container (5) is removably placed on the heat generating member (2). A control having a function of attaching the member (3) to the heat generating member (2) and reducing the maximum heating output to the heat generating member (2) in accordance with the temperature rise of the heat generating member (2) detected by the temperature detection member (3). A heating cooker characterized in that a device (4) is provided inside a main body (1).
JP26946489A 1989-10-17 1989-10-17 Heating cooker Pending JPH03131213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26946489A JPH03131213A (en) 1989-10-17 1989-10-17 Heating cooker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26946489A JPH03131213A (en) 1989-10-17 1989-10-17 Heating cooker

Publications (1)

Publication Number Publication Date
JPH03131213A true JPH03131213A (en) 1991-06-04

Family

ID=17472803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26946489A Pending JPH03131213A (en) 1989-10-17 1989-10-17 Heating cooker

Country Status (1)

Country Link
JP (1) JPH03131213A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012502410A (en) * 2008-09-09 2012-01-26 一峰 林 Heating control device and heating control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012502410A (en) * 2008-09-09 2012-01-26 一峰 林 Heating control device and heating control method

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