JPS5956630A - Boiling detecting device - Google Patents
Boiling detecting deviceInfo
- Publication number
- JPS5956630A JPS5956630A JP16691482A JP16691482A JPS5956630A JP S5956630 A JPS5956630 A JP S5956630A JP 16691482 A JP16691482 A JP 16691482A JP 16691482 A JP16691482 A JP 16691482A JP S5956630 A JPS5956630 A JP S5956630A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- boiling
- container
- rate
- heating element
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/10—Tops, e.g. hot plates; Rings
- F24C15/102—Tops, e.g. hot plates; Rings electrically heated
- F24C15/106—Tops, e.g. hot plates; Rings electrically heated electric circuits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Resistance Heating (AREA)
- Electric Stoves And Ranges (AREA)
- Cookers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電気コンロ等における熱機器における容器内
の水の沸騰を検出する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for detecting boiling of water in a container in a thermal appliance such as an electric stove.
従来例の構成とその問題点
従来、サーモスタットによる容器の温度を検出して、所
定の温度以上になるとヒータへの通電を停止する沸騰検
出装置の場合、サーモスタットがヒータから受ける放射
熱による誤動作を防ぐだめ、及び、気圧による沸騰点の
違い等による誤動作を防ぐために沸騰検出点は90′c
〜95′C程度にせざるを得なかった。つまり100′
C(常気圧にて)という沸騰完了を検出することはでき
なかった・発明の目的
本発明は上記問題を解消するために容器の温度を検出す
る温度検出器の温度上昇率を継続的に測定し、容器と温
度検出器の熱的結合状態が良い場合には温度検出器の温
度上昇率が所定の値以下になった時点で、逆に温度と温
度検出器の間に汚れ等の付着により熱的結合が悪い場合
には温度検出器の1昌度が所定の6m度μ上になった時
点で沸騰状態を検出し7ようとするものである。Conventional configuration and its problems Conventionally, in the case of a boiling detection device that detects the temperature of the container using a thermostat and stops energizing the heater when the temperature exceeds a predetermined temperature, the thermostat prevents malfunctions due to radiant heat received from the heater. The boiling detection point is set at 90'C to prevent malfunctions due to differences in boiling point due to atmospheric pressure, etc.
The temperature had to be kept at about 95'C. That is 100'
It was not possible to detect the completion of boiling at C (at normal pressure).Purpose of the Invention In order to solve the above problem, the present invention continuously measures the temperature rise rate of a temperature detector that detects the temperature of the container. However, if the thermal coupling between the container and the temperature sensor is good, when the temperature rise rate of the temperature sensor falls below a predetermined value, conversely, due to dirt etc. adhering between the temperature sensor and the temperature sensor, If the thermal coupling is poor, a boiling state is detected when the temperature detector reaches a predetermined value of 6 m degrees μ.
発明の(1に成
本発明の沸騰検出装置の構成は、水を収容し、た容器を
加熱する発熱体を設け、前記容器に熱的に結合させ/ヒ
温度検出器を設け、この温度検出器が検出17たi!i
i’1度を入力信号どしてン晶度検出器の温度十ケ1率
を測定する渦度上H率測定手段と、前配添度検出器の検
出しだ読度を入力信号として温度検出器が所定の717
11島以」−0であることを′l′11定する温度判定
手段とにより、前記容器と前記温度検知素子との熱的結
合か良い場合には前記温度上ゲトキξ測定手段の出力で
、逆に熱的結合が悪い場合には前記温度’l’l定手段
の出力で前記容器内の水が沸騰したとI′ll定する沸
11々判定手段と、この沸騰判定手段の出力にJ:シル
1ス動される容器内の水が沸騰し/柱ことを報知するi
’JB騰報知手段と前記発熱体への通電を制御する発熱
体通電制御手段からなるものである。The configuration of the boiling detection device of the present invention is as follows: A heating element for heating a container containing water is provided, a temperature sensor is provided which is thermally coupled to the container, and the temperature sensor was detected 17i!i
A vorticity upper H rate measuring means uses i'1 degree as an input signal to measure the temperature of the crystallinity detector; Detector is specified 717
If the thermal coupling between the container and the temperature sensing element is good, the output of the temperature fluctuation ξ measuring means is used to determine whether the thermal coupling between the container and the temperature sensing element is good. On the other hand, if the thermal coupling is poor, boiling determination means determines that the water in the container has boiled based on the output of the temperature determining means, and J is determined by the output of the boiling determination means. : Notifies that the water in the container being moved is boiling/column.
It consists of a JB rising notification means and a heating element energization control means for controlling energization to the heating element.
本発明の構成では、温度検出器の位置が発熱体の近傍に
設けられていても、温度検出器と容器の熱的結合が良い
場合は容器と1品度検出器のl晶度差が小さいため、容
器内の水が7Vlli騰すると、温度検出器の温度も水
の沸騰点より少し上の温度に安定しようとするのでこの
温度検出器の郡度上罫率が所定の値以下になった時点で
沸騰状態を検知することができる。そこで、発熱体への
通電を例えば停止し、使用者に発音体発光体等の手段で
dli騰したことを報知する。In the configuration of the present invention, even if the temperature sensor is located near the heating element, if the thermal coupling between the temperature sensor and the container is good, the crystallinity difference between the container and the single-grade detector is small. Therefore, when the water in the container rises by 7 Vlli, the temperature of the temperature sensor also tries to stabilize at a temperature slightly above the boiling point of water, so the temperature upper limit ratio of this temperature sensor falls below the predetermined value. A boiling state can be detected at this point. Therefore, the power supply to the heating element is stopped, for example, and the user is notified that the dli has risen by means such as a sounding body light emitting element.
次に、温度検出器と容器の熱的結合は悪い場合は、容器
内の水がθ1)騰しても発熱体の影響で、温度検出器の
温度は一定の上昇率で上昇する。ゆえにこの場合に所定
の温度上昇率以下になる時点という沸騰検出でd:沸騰
してから、ある時間紅過してからしか検知することがで
きない。ゆえに、この場合は温度検出器が所定の温度以
−1−になった時点で沸騰状態になったということを判
定ずれば、よりよい精度で沸騰し/こことを検出するこ
とができる。Next, if the thermal coupling between the temperature sensor and the container is poor, even if the water in the container rises θ1), the temperature of the temperature sensor will rise at a constant rate of increase due to the influence of the heating element. Therefore, in this case, boiling can be detected only after boiling has elapsed for a certain period of time after boiling. Therefore, in this case, if the temperature detector determines that the boiling state has occurred when the temperature reaches -1- below a predetermined temperature, it is possible to detect the boiling state with better accuracy.
実施例の説明
以下、本発明の一実施例としての電気コンロについて説
明する。図において、1は交流電源で、ワンチップ2、
]J(抗3、ツェナークイオード4、抵抗6、ダイオー
ド6で、制御回路動作用の直流電源を形成している。7
は水を収容している容器で、8−5発熱体、9は発熱体
通電制御手段であるE端子双方向性サイリスタである。DESCRIPTION OF EMBODIMENTS An electric stove as an embodiment of the present invention will be described below. In the figure, 1 is an AC power supply, one chip 2,
]J (Resistor 3, Zener diode 4, resistor 6, and diode 6 form a DC power supply for operating the control circuit.7
is a container containing water, 8-5 is a heating element, and 9 is an E-terminal bidirectional thyristor which is a heating element energization control means.
この三端子双方向性サイリスタ9がオンすると、発熱体
8が発熱し、容器7を加熱することができる。10は1
;清廉検出器であるサーミスタであり、容器7に熱的に
結合させ、かつ発熱体の近傍に設けである。電気コンロ
等であると、渦巻状のンースヒータを発熱体とし、この
中央部に下部よりサーミスタを突出しだ形で容器の温度
を検出するI’ll造をとるので容器と温度検出器の間
に汚れが利殖した時など温度検出器が発熱体の影響を受
ける。まだ容器の横の部分に温度検出器を設けてもやは
り同様のことがいえる。When the three-terminal bidirectional thyristor 9 is turned on, the heating element 8 generates heat, and the container 7 can be heated. 10 is 1
; It is a thermistor which is an integrity detector, and is thermally coupled to the container 7 and installed near the heating element. In the case of electric stoves, etc., the heating element is a spiral-shaped heater, and a thermistor is protruded from the bottom of the central part of the heater to detect the temperature of the container, so there is no dirt between the container and the temperature sensor. The temperature sensor is affected by the heating element, such as when the temperature sensor is harvested. The same thing can be said even if the temperature sensor is installed on the side of the container.
制御装置は、マイクロコンビコータ11及び同辺回路か
らできている。ここに示すマイクロコンビ、z、−Qi
、CPU 、ROM 、 RhMおxび入出力ボートか
ら構成されているいわゆるワンチップ・マイクロコンピ
ュータである。The control device is made up of a micro combi coater 11 and a circuit on the same side. Microcombi shown here, z, -Qi
It is a so-called one-chip microcomputer consisting of a CPU, a ROM, a RhM, and an input/output board.
スタートスイッチ12を閉じると、沸騰検出動作が開始
され、マイクロコンビコータ11が、トランジスタ13
を駆動し、発熱体通電制御手段9を通電させ、発熱体8
を通電さぜる。ゆえに容器7が加熱され、温度検出器1
0の温度(寸、容器7と発熱体8の影響により−に昇ノ
ーる。この時の温度検出器10と容器7の熱的結合が良
い場合と、悪い場合についての、容器内の水のi?li
’L度と、サーミスタ10の温度の関係を第2図に示す
3、なお、第2図において、イは容器内の水温を示し7
、口は熱的結合の良い場合の温度検出器の温度を・Iテ
し、ハは熱的結合の悪い場合の温度検出器の温度を示し
ている。When the start switch 12 is closed, the boiling detection operation is started, and the micro combi coater 11 detects the transistor 13.
, the heating element energization control means 9 is energized, and the heating element 8 is energized.
Electrify. Therefore, the container 7 is heated and the temperature sensor 1
The temperature of the water in the container rises to - due to the influence of the container 7 and the heating element 8. i?li
The relationship between 'L degrees and the temperature of the thermistor 10 is shown in Figure 2.3 In Figure 2, A indicates the water temperature in the container7.
, 口 indicates the temperature of the temperature sensor in the case of good thermal coupling, and C indicates the temperature of the temperature sensor in the case of poor thermal coupling.
容器内の水温がAの時点で沸騰したとして、1QO′C
で安定状態になったとする。熱的結合の良い場合は温度
検出器10の温度はυ18騰点より1Q〜15deg高
い温度に安定しようとするので、?黒度上昇率の低下で
沸騰状態を検出することがり能である。−まだ汚れ等で
熱的結合か悪い場合には、容器内の水か沸騰したにもか
かわらず、温度検出器の碑度はA意思後も依然としてト
昇しつつけ、この温度上Jjr率d:A点以前より小さ
いが、第2図の水:);より多い水用の場合d:A点以
前の温度十E・ネ(か小さくなるので、一定の温度」ユ
昇率以下という判定手段では精度よい検出は不可能であ
る。ゆえ(で第2図に示す411< 高度検出器が所(
での(最高):c!1度Bを超し/ζ時をもつ−C沸1
1に5状態全検知すれば粘度よく検知できる。Assuming that the water temperature in the container boils at point A, 1QO'C
Suppose that it reaches a stable state. If the thermal coupling is good, the temperature of the temperature sensor 10 will try to stabilize at 1Q~15deg higher than the rising point of υ18, so ? It is possible to detect a boiling state by a decrease in the rate of increase in blackness. - If the thermal connection is still poor due to dirt, etc., even though the water in the container has boiled, the temperature of the temperature detector will continue to rise even after A, and at this temperature the Jjr rate d: Although it is smaller than that before point A, the water in Figure 2:); In the case of a larger amount of water, d: The temperature before point A is 10E・ne (or smaller, so the means for determining that the rate of increase is below a certain temperature) is Accurate detection is impossible. Therefore (at 411 shown in Fig. 2), the altitude detector is located at (
So (best): c! -C boiling 1 with 1 degree B/ζ time
If all five states are detected in 1, the viscosity can be detected with good accuracy.
?7rX、度検出器10の温度はA/D変換器14を介
してマイクロコンビコ−タ11に温度テークがii売み
込11れる。この温度テークを基に沸騰検知動作が完r
すると、マイクロコンビ、・−夕11は、>JB騰状態
表示装尚゛である発光クイオー1−15を点灯し、トラ
ンジスタ13をオフし、発熱体8への通′小:をイ亭1
1するようにI’iI/成する。? 7rX, the temperature of the degree detector 10 is sent to the micro combicoter 11 via the A/D converter 14. The boiling detection operation is completed based on this temperature take.
Then, the microcombi 11 turns on the light-emitting diodes 1-15, which are the JB rising status display devices, turns off the transistor 13, and turns off the communication to the heating element 8.
1 so that I'iI/forms.
次に手記のように構成し/こ沸騰検出装置の動作につい
て説明する。Next, the operation of the boiling detection device constructed as described in the notes will be explained.
容器7に水を入れ、スタートスイッチ12を押スト、マ
イクロコンビコータ11の中のROMに記憶された第3
図のフローチャートに示すプログラムの手順に基づいて
沸騰検出か開始される。Pour water into the container 7, press the start switch 12, and press the start switch 12.
Boiling detection is started based on the program procedure shown in the flowchart in the figure.
まず、ステップ■で発熱体8へ通電し、容器了を加熱し
、ステップ■で1晶度検出器10の温度が所定の温度以
上であるかどうかを判断し、その温度に達していなけれ
ば、ステップ■で温度上昇率を測定し、ステップ■で所
定の温度上H率以下かを比較し、以上の場合は、ステッ
プ■にもどり継続的に温度上昇率を測定する。ステップ
■で所定の温度上昇率以下になった場合と、ステップ■
で所定の温度以上の場合にはステップ■で沸騰したと判
断し、ステップ■で沸騰完了報知手段としての発光ダイ
オード15を点灯し、ステップ■で発熱体8への通電を
停[卜シ、沸騰検出動作を完了する。First, in step (2), the heating element 8 is energized to heat the container, and in step (2), it is determined whether the temperature of the crystallinity detector 10 is above a predetermined temperature, and if it has not reached that temperature, In step (2), the rate of temperature increase is measured, and in step (2), it is compared to see if it is less than or equal to a predetermined temperature H rate, and if the temperature is higher than that, the process returns to step (2) and the rate of temperature increase is continuously measured. If the temperature rise rate falls below the predetermined rate in step ■,
If the temperature is higher than the predetermined temperature, it is determined that the boiling has occurred in step (2), the light emitting diode 15 as a boiling completion notification means is turned on in step (2), and the power to the heating element 8 is stopped in step (2). Complete the detection operation.
上記の説明の如く、精度よい沸騰検出ができるわ
発明の対果
以上の説明から明らかなように本発明によれば容器と温
度検出器との熱的結合の良い場合も、汚れ等が利殖して
;)lHい場合も、精度よく沸j庵を検出することがで
きる。As explained above, boiling can be detected with high accuracy.Achievements of the InventionAs is clear from the above explanation, according to the present invention, even when the thermal coupling between the container and the temperature sensor is good, dirt, etc. can be detected. ;) Even if the temperature is low, it is possible to detect the temperature with high accuracy.
第1図に、本発明の一実施例を示す沸騰検出装置の電気
回路ンj、第2図は同要部の温度特性図、第3図は同/
!lli l向検出装商の沸j庵検出のだめのブログラ
ノ、の−例を示すフロ、−チャートである。
7・・・容器、8 ・・発熱体、9 ・・発熱体;市電
制御手段、10・・・・・温度検出器、11・・・マイ
クロ−1ンビエータ、150.沸騰、報知手段。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名第2
図
詩 開 □
第3図Fig. 1 shows an electric circuit of a boiling detection device showing an embodiment of the present invention, Fig. 2 shows a temperature characteristic diagram of the main parts of the same, and Fig. 3 shows the same / Fig. 3.
! It is a flowchart showing an example of a blog of a lli l direction detection device. 7... Container, 8... Heating element, 9... Heating element; Streetcar control means, 10... Temperature detector, 11... Micro-1 ambiator, 150. Boil, alarm means. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Illustrated poem open □ Figure 3
Claims (1)
温度を検出する温度検出器と、この温度検出器が検出し
た温度を入力信号として温度検出器の温度上E率を測定
する温度上昇率測定手段と前記温度検出器が検出した温
度を入力信号として席1度検出器か所定の温度以上であ
ることを判定する温度判定手段と、この温度判定手段の
出力及び前記温度」−5jl率刊定手段の出力を入力信
号として前記温度検出器の温度が所定温度場」−―の時
及び所定の温度上昇率頃−トになっ/こ時に前記容器内
の水が沸騰したと判定する7JB騰判定手段と、この沸
騰判定手段の出力によりnl)騰完了を報知する沸騰報
知手段と、前記沸j14!報知手段の出力により前記発
熱体への通電を制御する発熱体通電制御手段とからなる
沸騰検出装置。A heating element that heats a container that collects water, a temperature detector that detects the temperature of the container, and an E rate over temperature of the temperature detector that uses the temperature detected by the temperature detector as an input signal. A temperature rise rate measuring means, a temperature determining means that uses the temperature detected by the temperature detector as an input signal to determine that the seat temperature is higher than a predetermined temperature, and an output of the temperature determining means and the temperature. 5jl Using the output of the rate determining means as an input signal, it is determined that the water in the container has boiled when the temperature of the temperature detector reaches a predetermined temperature range and reaches a predetermined temperature increase rate. 7JB boiling determination means to perform boiling j14!, boiling notification means for notifying nl) boiling completion based on the output of the boiling determination means, and boiling j14! A boiling detection device comprising heating element energization control means for controlling energization of the heating element based on the output of the notification means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16691482A JPS5956630A (en) | 1982-09-25 | 1982-09-25 | Boiling detecting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16691482A JPS5956630A (en) | 1982-09-25 | 1982-09-25 | Boiling detecting device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5956630A true JPS5956630A (en) | 1984-04-02 |
JPH037852B2 JPH037852B2 (en) | 1991-02-04 |
Family
ID=15839979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16691482A Granted JPS5956630A (en) | 1982-09-25 | 1982-09-25 | Boiling detecting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5956630A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6129312A (en) * | 1984-07-20 | 1986-02-10 | 株式会社東芝 | Pot |
JPS6164217A (en) * | 1984-09-07 | 1986-04-02 | シャープ株式会社 | Electric pot |
JPS62284618A (en) * | 1986-06-04 | 1987-12-10 | 象印マホービン株式会社 | Heating control of electric pot |
JPS63296708A (en) * | 1987-05-29 | 1988-12-02 | 松下電器産業株式会社 | Control apparatus of electric pot |
JP2006517834A (en) * | 2003-02-06 | 2006-08-03 | エッジクラフト、コーポレイション | Improved apparatus for beverage extraction |
JP2009068778A (en) * | 2007-09-13 | 2009-04-02 | Rinnai Corp | Heating cooker |
-
1982
- 1982-09-25 JP JP16691482A patent/JPS5956630A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6129312A (en) * | 1984-07-20 | 1986-02-10 | 株式会社東芝 | Pot |
JPS6164217A (en) * | 1984-09-07 | 1986-04-02 | シャープ株式会社 | Electric pot |
JPS62284618A (en) * | 1986-06-04 | 1987-12-10 | 象印マホービン株式会社 | Heating control of electric pot |
JPH0569528B2 (en) * | 1986-06-04 | 1993-10-01 | Zojirushi Vacuum Bottle Co | |
JPS63296708A (en) * | 1987-05-29 | 1988-12-02 | 松下電器産業株式会社 | Control apparatus of electric pot |
JP2006517834A (en) * | 2003-02-06 | 2006-08-03 | エッジクラフト、コーポレイション | Improved apparatus for beverage extraction |
JP2009068778A (en) * | 2007-09-13 | 2009-04-02 | Rinnai Corp | Heating cooker |
Also Published As
Publication number | Publication date |
---|---|
JPH037852B2 (en) | 1991-02-04 |
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