JP4375185B2 - Multi-neck heating cooker - Google Patents

Multi-neck heating cooker Download PDF

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JP4375185B2
JP4375185B2 JP2004283865A JP2004283865A JP4375185B2 JP 4375185 B2 JP4375185 B2 JP 4375185B2 JP 2004283865 A JP2004283865 A JP 2004283865A JP 2004283865 A JP2004283865 A JP 2004283865A JP 4375185 B2 JP4375185 B2 JP 4375185B2
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infrared sensor
temperature
heating
top plate
infrared
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JP2006100085A (en
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博 富永
知香 河添
直昭 石丸
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)

Description

本発明は、赤外線センサを用いた多口加熱調理器に関するものである。   The present invention relates to a multi-mouth cooking device using an infrared sensor.

従来の多口加熱調理器は、鍋を載置するトッププレートにサーミスタなどの感温素子を接触させて、鍋の温度を検知していた。   The conventional multi-mouth cooking device detects the temperature of the pan by bringing a temperature sensitive element such as a thermistor into contact with a top plate on which the pan is placed.

また、鍋の温度検知の応答性を向上させるために、鍋から出力される赤外線強度を赤外線センサで検知することにより、鍋の温度を検知していた（例えば、特許文献１参照）。   Moreover, in order to improve the responsiveness of temperature detection of a pan, the temperature of the pan was detected by detecting the infrared intensity output from the pan with an infrared sensor (see, for example, Patent Document 1).

以下、従来構成の多口加熱調理器の誘導加熱調理の制御について図６を参照して説明する。図６において、トッププレート４２は負荷鍋４１を載置し、、加熱コイル４３は負荷鍋４１を誘導加熱し、赤外線センサ４４は負荷鍋４１からの赤外線放射を検知し、温度検知手段４５は赤外線センサ４４からの出力により負荷鍋４１の温度を算出し、制御手段４６は赤外線センサ４４からの出力に応じて加熱コイル４３への高周波電流供給を制御する構成である。   Hereinafter, control of induction heating cooking of the multi-mouth heating cooker having the conventional configuration will be described with reference to FIG. In FIG. 6, the top plate 42 mounts the load pan 41, the heating coil 43 induction heats the load pan 41, the infrared sensor 44 detects infrared radiation from the load pan 41, and the temperature detection means 45 is infrared. The temperature of the load pan 41 is calculated based on the output from the sensor 44, and the control means 46 is configured to control high-frequency current supply to the heating coil 43 in accordance with the output from the infrared sensor 44.

以上のように構成された多口加熱調理器の誘導加熱調理の制御では、負荷鍋４１の温度を鍋底から放射される赤外線で直接検知していたので、熱応答性に優れた温度検知を行うことが可能であった。
特開平３−１８４２９５号公報 In the induction heating cooking control of the multi-mouth heating cooker configured as described above, the temperature of the load pan 41 is directly detected by infrared rays radiated from the bottom of the pan, and thus temperature detection excellent in thermal responsiveness is performed. It was possible.
Japanese Patent Laid-Open No. 3-184295

しかしながら前記従来の構成では、機器内部に電気ヒータなど赤外線を放射する他の加熱手段を有する場合、電気ヒータ温度は約６００℃程度まで上昇するため、電気ヒータから放射される赤外線は、１００〜２００℃の負荷鍋４１の鍋底から放射される赤外線に対して数十倍のエネルギーとなり、電気ヒータから放射される赤外線の一部がトッププレート４２内を反射して伝えられ、赤外線センサ４４に入射されると、赤外線センサ４４にて正確な温度検知ができなくなるという課題があった。   However, in the conventional configuration, when other heating means such as an electric heater radiates infrared rays inside the apparatus, the electric heater temperature rises to about 600 ° C., so that the infrared rays radiated from the electric heater is 100 to 200. The energy is several tens of times higher than the infrared radiation radiated from the bottom of the load pan 41 at 0 ° C., and a part of the infrared radiation radiated from the electric heater is reflected inside the top plate 42 and incident on the infrared sensor 44. As a result, there is a problem that the infrared sensor 44 cannot accurately detect the temperature.

この場合、赤外線センサ４４により他の加熱手段（電気ヒータ）の影響を受けずに正確な温度検知を行うために、例えば、電気ヒータと誘導加熱手段とを同時に使用できないので、複数の加熱手段が同時に使用できないという課題もあった。   In this case, in order to perform accurate temperature detection by the infrared sensor 44 without being affected by other heating means (electric heater), for example, the electric heater and the induction heating means cannot be used at the same time. There was also a problem that it could not be used at the same time.

本発明は上記課題を解決するもので、電気ヒータなど他の加熱手段を同時使用した場合においても、他の加熱手段からの赤外線放射による影響を低減して、赤外線センサによる温度検知精度を向上した多口加熱調理器を提供することを目的とする。   The present invention solves the above problem, and even when other heating means such as an electric heater are used at the same time, the influence of infrared radiation from other heating means is reduced, and the temperature detection accuracy by the infrared sensor is improved. An object is to provide a multi-mouth cooking device.

前記従来の課題を解決するために、本発明の多口加熱調理器は、トッププレート上の負荷鍋を誘導加熱するため前記トッププレート下方に設けられた第１の誘導加熱手段と、前記トッププレートの下方に設けられ前記負荷鍋から発して前記トッププレートを透過した赤外線放射を検知する第１の赤外線センサと、前記第１の赤外線センサの出力より前記負荷鍋の温度を算出する温度算出手段と、前記トッププレート上の鍋を加熱する第２の加熱手段と、前記第１の誘導加熱手段および前記第２の加熱手段の通電を制御するとともに前記温度算出手段の算出する前記負荷鍋の温度により前記負荷鍋の温度制御を行う制御手段とを備え、前記第２の加熱手段から放射されトッププレートの内部を反射して入射される赤外線放射を検知する第２の赤外線センサを有し、前記第２の赤外線センサの出力に応じた補正値を算出し、前記補正値により、前記第２の加熱手段から放射された赤外線放射による前記第１の赤外線センサの出力増加分の影響を低減するように第１の赤外線センサの温度算出手段での算出温度を補正する補正手段を設けた構成とするものである。 In order to solve the above-mentioned conventional problems, a multi-mouth cooking device of the present invention includes a first induction heating means provided below the top plate for induction heating of a load pan on the top plate, and the top plate A first infrared sensor that is provided below and detects infrared radiation emitted from the load pan and transmitted through the top plate; and temperature calculation means for calculating the temperature of the load pan from the output of the first infrared sensor; The second heating means for heating the pan on the top plate, and the temperature of the load pan calculated by the temperature calculating means while controlling the energization of the first induction heating means and the second heating means. and control means for controlling the temperature of the load pan, the second red for detecting infrared radiation incident reflected inside the emitted top plate from said second heating means It has a line sensor, the second correction values are calculated in accordance with the output of the infrared sensor, wherein the correction value, the increase of the output of said first infrared sensor according emitted infrared radiation from said second heating means The correction means for correcting the temperature calculated by the temperature calculation means of the first infrared sensor is provided so as to reduce the influence of the minute .

これにより、第２の加熱手段から放射されトッププレート内を反射して第１の赤外線センサに入射される赤外線の影響を低減することができる。   Thereby, the influence of the infrared rays radiated from the second heating means and reflected inside the top plate and incident on the first infrared sensor can be reduced.

本発明の多口加熱調理器は、赤外線センサで温度制御する加熱手段と、赤外線を放射する他の加熱手段とを同時使用する場合においても、他の加熱手段の赤外線放射による赤外線センサ出力増加分を補正することで、赤外線センサによる負荷鍋の温度検知精度を向上することができる。   The multi-mouth heating cooker according to the present invention can increase the output of the infrared sensor due to the infrared radiation of the other heating means even when the heating means for controlling the temperature with the infrared sensor and the other heating means for emitting the infrared radiation are used at the same time. It is possible to improve the temperature detection accuracy of the load pan by the infrared sensor.

第１の発明は、トッププレート上の負荷鍋を誘導加熱するため前記トッププレート下方に設けられた第１の誘導加熱手段と、前記トッププレートの下方に設けられ前記負荷鍋から発して前記トッププレートを透過した赤外線放射を検知する第１の赤外線センサと、前記第１の赤外線センサの出力より前記負荷鍋の温度を算出する温度算出手段と、前記トッププレート上の鍋を加熱する第２の加熱手段と、前記第１の誘導加熱手段および前記第２の加熱手段の通電を制御するとともに前記温度算出手段の算出する前記負荷鍋の温度により前記負荷鍋の温度制御を行う制御手段とを備え、前記第２の加熱手段から放射され前記トッププレートの内部を反射して入射される赤外線を前記トッププレートの下方で検知する第２の赤外線センサを有し、前記第２の赤外線センサの出力に応じた補正値を算出し、前記補正値により、前記第２の加熱手段から放射された赤外線放射による前記第１の赤外線センサの出力増加分の影響を低減するように前記温度算出手段での算出温度を補正する補正手段を設けた構成とすることにより、第２の加熱手段から放射されトッププレート内を反射して第１の赤外線センサに入射される赤外線の影響を低減することができ、第１の誘導加熱手段と第２の加熱手段とを同時に使用する場合においても、第１の赤外線センサによる負荷鍋の温度検知精度を向上することができる。 The first invention is the first induction heating means provided below the top plate for induction heating the load pan on the top plate, and the top plate emanating from the load pan provided below the top plate. A first infrared sensor that detects infrared radiation that has passed through, temperature calculating means for calculating the temperature of the load pan from the output of the first infrared sensor, and second heating for heating the pan on the top plate comprising means and, and a control means for controlling the temperature of the load pan by the temperature of the load pan for calculating the temperature calculation means to control the energization of the previous SL first induction heating means and the second heating means , a second infrared sensor for detecting infrared rays incident is emitted from said second heating means reflects inside of the top plate below said top plate, Calculating a correction value corresponding to the output of the serial second infrared sensor, wherein the correction value, to reduce the output increment of the influence of the first infrared sensor with an infrared radiation emitted from said second heating means As described above, the correction means for correcting the temperature calculated by the temperature calculation means is provided, so that the infrared ray radiated from the second heating means, reflected inside the top plate, and incident on the first infrared sensor. The influence can be reduced, and even when the first induction heating means and the second heating means are used at the same time, the temperature detection accuracy of the load pan by the first infrared sensor can be improved.

第２の発明は、特に、第１の発明の第２の赤外線センサを、第１の赤外線センサと第２の加熱手段の間に配置する構成とすることにより、第２の赤外線センサは第２の加熱手段から第１の赤外線センサの方向に放射される赤外線を確実に検知して補正するので、第１の誘導加熱手段と第２の加熱手段とを同時に使用する場合の第１の赤外線センサによる負荷鍋の温度検知精度をより向上させることができる。   In the second invention, in particular, the second infrared sensor of the first invention is arranged between the first infrared sensor and the second heating means so that the second infrared sensor is the second one. Since the infrared rays radiated from the heating means in the direction of the first infrared sensor are reliably detected and corrected, the first infrared sensor when the first induction heating means and the second heating means are used simultaneously The temperature detection accuracy of the load pan can be further improved.

第３の発明は、特に、第１または第２の発明の補正手段を、第２の加熱手段の通電時に補正値を算出する構成とすることにより、誘導加熱手段を単独で使用する場合は、第２の加熱手段からの赤外線が入射されない第１の赤外線センサの出力のみで温度算出するので、第１の赤外線センサによる負荷鍋の温度検知精度をより向上させることができる。   In the third invention, particularly when the correction means of the first or second invention is configured to calculate a correction value when the second heating means is energized, when the induction heating means is used alone, Since the temperature is calculated only from the output of the first infrared sensor in which the infrared rays from the second heating means are not incident, the temperature detection accuracy of the load pan by the first infrared sensor can be further improved.

第４の発明は、特に、第３の発明の補正手段を、第２の加熱手段の通電停止時に第２の赤外線センサの出力が所定以上で補正値を算出する構成とすることにより、第２の加熱手段の通電停止後、第２の加熱手段の電気ヒータ温度が低下するまで第２の加熱手段からの赤外線放射が継続する場合においても、それに応じて第１の赤外線センサの算出温度を補正することができ、第２の加熱手段の通電停止から電気ヒータ温度低下安定までの間も第１の赤外線センサによる負荷鍋の温度検知精度を向上させることができる。   According to a fourth aspect of the invention, in particular, the correction means of the third aspect of the invention is configured to calculate a correction value when the output of the second infrared sensor is equal to or greater than a predetermined value when the energization of the second heating means is stopped. Even when the infrared radiation from the second heating means continues until the electric heater temperature of the second heating means decreases after the current supply to the heating means is stopped, the calculated temperature of the first infrared sensor is corrected accordingly. It is possible to improve the temperature detection accuracy of the load pan by the first infrared sensor from the time when the second heating means is deenergized until the temperature of the electric heater is lowered.

第５の発明は、特に、第１または第２の多口加熱調理器を、第２の赤外線センサ近傍に温度検知手段を備え、補正手段は第２の加熱手段の通電停止時に前記温度検知手段の検知温度が所定以上で補正値の算出を禁止する構成とすることにより、第２の赤外線センサ上方に高温の鍋などが載置されて、第１の赤外線センサへの影響が少なく、第２の赤外線センサの出力のみが増加する場合に、第２の加熱手段以外からの赤外線放射分を補正することなく、第１の赤外線センサによる負荷鍋の温度検知精度を向上させることができる。   According to a fifth aspect of the invention, in particular, the first or second multi-mouth heating cooker is provided with a temperature detection means in the vicinity of the second infrared sensor, and the correction means is the temperature detection means when the energization of the second heating means is stopped. By adopting a configuration that prohibits the calculation of the correction value when the detected temperature is higher than a predetermined temperature, a hot pan or the like is placed above the second infrared sensor, and there is little influence on the first infrared sensor. When only the output of the infrared sensor increases, the temperature detection accuracy of the load pan by the first infrared sensor can be improved without correcting the infrared radiation from other than the second heating means.

第６の発明は、特に、第１〜５の発明の多口加熱調理器を、第２の赤外線センサの視野角範囲となるトッププレート上面に遮光手段を備えた構成とすることにより、第２の赤外線センサの出力が、第２の加熱手段の影響ではない、太陽光や照明、あるいは加熱された鍋からの赤外線放射による影響を低減し、安定した状態で補正値を算出することができ、第１の赤外線センサによる負荷鍋の温度検知精度をより向上させることができる。   According to the sixth aspect of the invention, in particular, the multi-mouthed cooking device of the first to fifth aspects of the present invention is configured by including a light shielding means on the top plate upper surface that becomes the viewing angle range of the second infrared sensor. The output of the infrared sensor is not the influence of the second heating means, the influence of infrared radiation from sunlight, lighting, or a heated pan can be reduced, and the correction value can be calculated in a stable state, The temperature detection accuracy of the load pan by the first infrared sensor can be further improved.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

（実施の形態１）
図１は、本発明の第１の実施の形態における断面図を示すものである。 (Embodiment 1)
FIG. 1 shows a cross-sectional view of a first embodiment of the present invention.

図１において、トッププレート１２は負荷鍋１１を載置し、加熱コイル（第１の誘導加熱手段）１３は負荷鍋１１を誘導加熱し、インバータ回路（第１の誘導加熱手段）１４は加熱コイル１３に高周波電流を供給し、加熱コイル１３とインバータ回路１４にて第１の誘導加熱手段は構成されている。第１の赤外線センサ１６は負荷鍋１１からの赤外線放射を検出し、温度算出手段１７は第１の赤外線センサ１６からの出力により負荷鍋１１の鍋底温度を算出し、第２の加熱手段１８はラジェントヒータにより構成されている。第２の赤外線センサ１９は第２の加熱手段１８からの赤外線放射を検出し、補正手段２０は第２の赤外線センサ１９からの出力に応じて第１の赤外線センサ１６による算出温度を補正し、制御手段２１は第１の誘導加熱手段１５および第２の加熱手段１８の加熱通電を制御し、かつ補正手段２０に第２の加熱手段１８の通電状態を出力し、遮光手段２２は第２の赤外線センサ１９の視野角範囲を覆うようにトッププレート１２の上面に配設され、トッププレート１２上方から第２の赤外線センサ１９への赤外線放射を遮光する。   In FIG. 1, a top plate 12 mounts a load pan 11, a heating coil (first induction heating means) 13 induction heats the load pan 11, and an inverter circuit (first induction heating means) 14 is a heating coil. A high frequency current is supplied to 13, and the first induction heating means is constituted by the heating coil 13 and the inverter circuit 14. The first infrared sensor 16 detects infrared radiation from the load pan 11, the temperature calculation means 17 calculates the pan bottom temperature of the load pan 11 based on the output from the first infrared sensor 16, and the second heating means 18 It is composed of a radial heater. The second infrared sensor 19 detects infrared radiation from the second heating means 18, and the correction means 20 corrects the calculated temperature by the first infrared sensor 16 according to the output from the second infrared sensor 19, The control means 21 controls the heating energization of the first induction heating means 15 and the second heating means 18, and outputs the energization state of the second heating means 18 to the correction means 20, and the light shielding means 22 It is disposed on the top surface of the top plate 12 so as to cover the viewing angle range of the infrared sensor 19, and shields infrared radiation from the top plate 12 to the second infrared sensor 19.

図２は、本発明の第１の実施の形態における平面図を示すものである。   FIG. 2 shows a plan view of the first embodiment of the present invention.

図２において、第１の赤外線センサ１６は加熱コイル１３中央に配置されており、第２の赤外線センサ１９は、第１の赤外線センサ１６の中心と第２の加熱手段１８の中心を結ぶ線上に配置されている。   In FIG. 2, the first infrared sensor 16 is arranged at the center of the heating coil 13, and the second infrared sensor 19 is on a line connecting the center of the first infrared sensor 16 and the center of the second heating means 18. Has been placed.

以上のように構成された多口加熱調理器についてその動作を説明する。   The operation of the multi-mouth heating cooker configured as described above will be described.

加熱コイル１３に高周波電流が供給されると、加熱コイル１３上方に載置された負荷鍋１１が加熱される。負荷鍋１１の鍋底からは鍋の温度に応じた赤外線が放射されており、負荷鍋１１から発した赤外線はトッププレート１２を透過して第１の赤外線センサ１６に入力される。第１の赤外線センサ１６からの入力信号により温度算出手段１７は負荷鍋１１の温度を算出し、設定された加熱状態となるように制御手段２１は加熱コイル１３に流れる高周波電流を制御する。   When the high frequency current is supplied to the heating coil 13, the load pan 11 placed above the heating coil 13 is heated. Infrared rays corresponding to the temperature of the pan are radiated from the bottom of the load pan 11, and the infrared rays emitted from the load pan 11 pass through the top plate 12 and are input to the first infrared sensor 16. The temperature calculation means 17 calculates the temperature of the load pan 11 by the input signal from the first infrared sensor 16, and the control means 21 controls the high-frequency current flowing through the heating coil 13 so as to be in the set heating state.

第２の加熱手段１８を同時に使用する場合は、図３に示すように第２の加熱手段１８から放射される赤外線の一部はトッププレート１２内部を反射して第１の赤外線センサ１６、およびに第２の赤外線センサ１９に入射される。   When the second heating means 18 is used at the same time, as shown in FIG. 3, a part of infrared rays radiated from the second heating means 18 is reflected inside the top plate 12, and the first infrared sensor 16, and Is incident on the second infrared sensor 19.

第２の赤外線センサ１９の上方には遮光手段２２があるので、太陽光や照明、あるいは第２の赤外線センサ上方に載置された鍋（後述、図５参照）など、第２の加熱手段１８以外からの赤外線放射による赤外線を低減し、第２の赤外線センサ１９が影響を受けにくい構造となっている。   Since there is a light blocking means 22 above the second infrared sensor 19, the second heating means 18 such as sunlight, lighting, or a pan (see FIG. 5 described later) placed above the second infrared sensor. Infrared radiation due to infrared radiation from other than the above is reduced, and the second infrared sensor 19 is not easily affected.

第２の加熱手段１８の通電を開始すると、第２の加熱手段１８からの赤外線放射により第１の赤外線センサ１６の出力が増加するが、第２の赤外線センサ１９で第２の加熱手段１８からの赤外線放射を検知しているので、第２の赤外線センサ１９からの入力信号に応じて補正手段２０にて補正値を算出し、温度算出手段１７は第１の赤外線センサ１６と補正手段２０との信号により負荷鍋１１の鍋底温度を算出する。   When energization of the second heating means 18 is started, the output of the first infrared sensor 16 increases due to the infrared radiation from the second heating means 18, but the second infrared sensor 19 starts from the second heating means 18. Therefore, the correction means 20 calculates a correction value in accordance with an input signal from the second infrared sensor 19, and the temperature calculation means 17 includes the first infrared sensor 16, the correction means 20, and the like. The pan bottom temperature of the load pan 11 is calculated from the signal.

第２の加熱手段１８の通電が停止した後も、第２の赤外線センサへの赤外線の入射が多く、第２の加熱手段１８の温度が低下するまでは、第１の赤外線センサ１６の出力に影響する赤外線が第２の加熱手段１８から放射されるので、温度算出手段１７は第１の赤外線センサ１６と補正手段２０との信号により負荷鍋１１の鍋底温度の算出を行い、第２の赤外線センサへの赤外線の入射が少なく、第２の加熱手段１８から放射される赤外線が第１の赤外線センサ１６の出力に影響しなくなるまで低下すると、温度算出手段１７は補正手段２０の信号を無視し、第１の赤外線センサ１６からの信号により負荷鍋１１の鍋底温度の算出を行う。   Even after the energization of the second heating means 18 is stopped, the infrared rays are frequently incident on the second infrared sensor, and the output of the first infrared sensor 16 is maintained until the temperature of the second heating means 18 decreases. Since the influencing infrared rays are radiated from the second heating means 18, the temperature calculation means 17 calculates the pan bottom temperature of the load pan 11 based on the signals from the first infrared sensor 16 and the correction means 20, and the second infrared rays. When the incidence of infrared rays on the sensor is small and the infrared rays emitted from the second heating means 18 are lowered until they do not affect the output of the first infrared sensor 16, the temperature calculation means 17 ignores the signal from the correction means 20. The pan bottom temperature of the load pan 11 is calculated based on the signal from the first infrared sensor 16.

以上のように、本実施の形態においては第２の加熱手段１８の通電時に温度算出手段１７は第１の赤外線センサ１６と、第２の赤外線センサ１９の出力に応じて得られる補正手段２０の補正値より温度を算出するので、第２の加熱手段１８からトッププレート１２内を反射して赤外線センサ１６に入射される赤外線の影響を低減することができ、第１の赤外線センサ１６による温度制御時に第２の加熱手段１８の加熱通電を禁止する必要もなく、第１の誘導加熱手段１５と第２の加熱手段１８を同時に使用した場合の第１の赤外線センサ１６による負荷鍋１１の鍋底温度検知精度を向上することができる。   As described above, in the present embodiment, when the second heating unit 18 is energized, the temperature calculation unit 17 includes the first infrared sensor 16 and the correction unit 20 obtained according to the outputs of the second infrared sensor 19. Since the temperature is calculated from the correction value, it is possible to reduce the influence of infrared rays that are reflected from the second heating means 18 and are incident on the infrared sensor 16, and temperature control by the first infrared sensor 16 is performed. Sometimes it is not necessary to prohibit the energization of the second heating means 18, and the bottom temperature of the load pan 11 by the first infrared sensor 16 when the first induction heating means 15 and the second heating means 18 are used simultaneously. Detection accuracy can be improved.

なお、本実施例では第２の加熱手段１８をラジェントヒータで構成したが、ハロゲンヒータやシーズヒータなどヒータの輻射熱にて加熱する構成であれば同様の効果が得られる。   In the present embodiment, the second heating means 18 is composed of a radiant heater, but the same effect can be obtained as long as the structure is heated by the radiant heat of a heater such as a halogen heater or a sheathed heater.

（実施の形態２）
図４は、本発明の第２の実施の形態における断面図を示すものである。 (Embodiment 2)
FIG. 4 shows a cross-sectional view of the second embodiment of the present invention.

図４において、符号１１から２２は本発明の第１の実施の形態と同一であり説明を省略する。温度検出手段２３は第２の赤外線センサ１９の視野角範囲外でかつ、第２の赤外線センサ１９近傍のトッププレート１２下面温度を検出する。   In FIG. 4, reference numerals 11 to 22 are the same as those in the first embodiment of the present invention, and a description thereof will be omitted. The temperature detecting means 23 detects the temperature of the bottom surface of the top plate 12 outside the viewing angle range of the second infrared sensor 19 and in the vicinity of the second infrared sensor 19.

以上のように構成された多口加熱調理器についてその動作を説明する。   The operation of the multi-mouth heating cooker configured as described above will be described.

図５に示すように遮光手段２２がない場合では、第２の加熱手段１８の通電を停止している状態で、第２の赤外線センサ１９上方に加熱された鍋２４が載置されると、第２の赤外線センサ１９に鍋２４から放射される赤外線が直接入力され出力が増加する。一方第１の赤外線センサ１６にも鍋２４から放射される赤外線がトッププレート１２を反射して入力されるが、鍋２４からの放射エネルギーは前述の第２の加熱手段１８より表面温度が低くかなり小さいので、トッププレート１２内での反射により赤外線量が減衰しているため、第１の赤外線センサ１６の出力はほとんど増加しない。この時、第２の赤外線センサ１９近傍に設置された温度検知手段２３は、鍋２４の温度をトッププレート１２を介して検知しており、温度検知手段２３の検知温度が、第２の赤外線センサ１９の検知出力に影響がでる温度以上では、補正手段２０による補正は行わないように補正を禁止している。   In the case where there is no light shielding means 22 as shown in FIG. 5, when the heated pan 24 is placed above the second infrared sensor 19 while the energization of the second heating means 18 is stopped, The infrared rays radiated from the pan 24 are directly inputted to the second infrared sensor 19 and the output is increased. On the other hand, the infrared ray radiated from the pan 24 is also input to the first infrared sensor 16 by reflecting off the top plate 12, but the radiant energy from the pan 24 is considerably lower than the surface temperature of the second heating means 18 described above. Since it is small, the amount of infrared rays is attenuated by reflection in the top plate 12, so that the output of the first infrared sensor 16 hardly increases. At this time, the temperature detection means 23 installed in the vicinity of the second infrared sensor 19 detects the temperature of the pan 24 via the top plate 12, and the detected temperature of the temperature detection means 23 is the second infrared sensor. The correction is prohibited so that the correction by the correction means 20 is not performed above the temperature at which the detection output 19 is affected.

以上のように、本実施の形態においては第２の赤外線センサ１９上方に加熱された鍋２４が置かれて、第１の赤外センサ１６への影響は無視でき、第２の赤外線センサ１９の出力にのみ影響がでる場合には、第２の赤外線センサ１９の出力に応じた補正手段２０での補正を禁止することで誤った補正をしないので、第１の赤外線センサ１６による負荷鍋の鍋底温度検知精度を向上することができる。   As described above, in the present embodiment, the heated pan 24 is placed above the second infrared sensor 19, and the influence on the first infrared sensor 16 can be ignored. When only the output is affected, the correction by the correction means 20 according to the output of the second infrared sensor 19 is prohibited, so that no erroneous correction is made. The temperature detection accuracy can be improved.

なお、遮光手段２２により鍋２４から放射される赤外線の影響は遮光して低減できる、この場合も、温度検知手段２３の検知温度と第１の赤外線センサ１６への影響との関係に応じて補正内容を設定し、同様の効果がえられる。   It should be noted that the influence of the infrared rays emitted from the pan 24 by the light shielding means 22 can be reduced by shielding the light, and in this case as well, correction is made according to the relationship between the detected temperature of the temperature detection means 23 and the influence on the first infrared sensor 16. The contents can be set and the same effect can be obtained.

以上のように、本発明にかかる多口加熱調理器は、電気ヒータから放射される赤外線の影響を低減し、電気ヒータ同時使用時の赤外線センサによる温度検知精度を向上させることができるので、赤外線センサを用いた湯沸かしや炊飯、焼き物といった自動調理と、電気ヒータによる加熱調理を同時に進行する調理器等の用途にも適用できる。   As mentioned above, since the multi-mouth heating cooker concerning this invention can reduce the influence of the infrared rays radiated | emitted from an electric heater, and can improve the temperature detection precision by the infrared sensor at the time of an electric heater simultaneous use, it is infrared rays. The present invention can also be applied to uses such as cookers in which automatic cooking using a sensor such as a water heater, rice cooker, and pottery and heating cooking using an electric heater proceed simultaneously.

本発明の実施の形態１における多口加熱調理器の断面を示す図The figure which shows the cross section of the multi-mouthed heating cooker in Embodiment 1 of this invention. 本発明の実施の形態１における多口加熱調理器の平面を示す図The figure which shows the plane of the multi-mouth heating cooker in Embodiment 1 of this invention. 本発明の実施の形態１における第２の加熱手段から第１及び第２の赤外線センサに入射される赤外線を示す図The figure which shows the infrared rays which inject into the 1st and 2nd infrared sensor from the 2nd heating means in Embodiment 1 of this invention 本発明の実施の形態２における多口加熱調理器の断面を示す図The figure which shows the cross section of the multi-mouth heating cooker in Embodiment 2 of this invention. 本発明の実施の形態２における鍋から第１及び第２の赤外線センサに入射される赤外線を示す図The figure which shows the infrared rays which inject into the 1st and 2nd infrared sensor from the pan in Embodiment 2 of this invention 従来の多口加熱調理器の断面を示す図The figure which shows the cross section of the conventional multi-mouth heating cooker

符号の説明Explanation of symbols

１１ 負荷鍋
１２ トッププレート
１３ 加熱コイル（第１の誘導加熱手段）
１４ インバータ回路（第１の誘導加熱手段）
１６ 第１の赤外線センサ
１７ 温度算出手段
１８ 第２の加熱手段
１９ 第２の赤外線センサ
２０ 補正手段
２１ 制御手段
２２ 遮光手段
２３ 温度検知手段
２４ 鍋 11 Load pan 12 Top plate 13 Heating coil (first induction heating means)
14 Inverter circuit (first induction heating means)
16 First infrared sensor 17 Temperature calculation means 18 Second heating means 19 Second infrared sensor 20 Correction means 21 Control means 22 Light shielding means 23 Temperature detection means 24 Pan

Claims (6)

トッププレート上の負荷鍋を誘導加熱するため前記トッププレート下方に設けられた第１の誘導加熱手段と、前記トッププレートの下方に設けられ前記負荷鍋から発して前記トッププレートを透過した赤外線放射を検知する第１の赤外線センサと、前記第１の赤外線センサの出力より前記負荷鍋の温度を算出する温度算出手段と、前記トッププレート上の鍋を加熱する第２の加熱手段と、前記第１の誘導加熱手段および前記第２の加熱手段の通電を制御するとともに前記温度算出手段の算出する前記負荷鍋の温度により前記負荷鍋の温度制御を行う制御手段とを備え、前記第２の加熱手段から放射され前記トッププレートの内部を反射して入射される赤外線を前記トッププレートの下方で検知する第２の赤外線センサを有し、前記第２の赤外線センサの出力に応じた補正値を算出し、前記補正値により、前記第２の加熱手段から放射された赤外線放射による前記第１の赤外線センサの出力増加分の影響を低減するように前記温度算出手段での算出温度を補正する補正手段を設けた多口加熱調理器。 First induction heating means provided below the top plate for induction heating the load pan on the top plate, and infrared radiation transmitted from the load pan provided below the top plate and transmitted through the top plate a first infrared sensor for detecting a temperature calculating means for calculating the first temperature of the load pan from the output of the infrared sensor, and a second heating means for heating the pot on the top plate, before Symbol first Control means for controlling energization of one induction heating means and the second heating means and controlling the temperature of the load pan based on the temperature of the load pan calculated by the temperature calculation means, and the second heating a second infrared sensor for detecting infrared rays incident on reflection inside of the emitted said top plate from the means below said top plate, said second infrared Calculating a correction value corresponding to the output of the sensor, it said by the correction value, the temperature calculation to reduce the influence of the output increment of the first infrared sensor according emitted infrared radiation from said second heating means A multi-mouth heating cooker provided with correcting means for correcting the calculated temperature in the means. 第２の赤外線センサは、第１の赤外線センサと第２の加熱手段の間に配置する構成とした請求項１に記載の多口加熱調理器。 The multi-mouth heating cooker according to claim 1, wherein the second infrared sensor is arranged between the first infrared sensor and the second heating means. 補正手段は、第２の加熱手段の通電時に補正値を算出する請求項１または２に記載の多口加熱調理器。 The multi-mouth heating cooker according to claim 1 or 2, wherein the correction means calculates a correction value when the second heating means is energized. 補正手段は、第２の加熱手段の通電停止時に第２の赤外線センサの出力が所定以上で補正値を算出する請求項３に記載の多口加熱調理器。 The multi-mouth heating cooker according to claim 3, wherein the correction means calculates the correction value when the output of the second infrared sensor is greater than or equal to a predetermined value when the energization of the second heating means is stopped. 第２の赤外線センサ近傍に温度検知手段を備え、補正手段は第２の加熱手段の通電停止時に前記温度検知手段の検知温度が所定以上で補正値の算出を禁止する請求項１または２に記載の多口加熱調理器。 The temperature detection means is provided in the vicinity of the second infrared sensor, and the correction means prohibits calculation of a correction value when the temperature detected by the temperature detection means is equal to or higher than a predetermined temperature when the energization of the second heating means is stopped. Multi-mouth heating cooker. 第２の赤外線センサの視野角範囲となるトッププレート上面に遮光手段を備えた請求項１〜５のいずれか１項に記載の多口加熱調理器。 The multi-mouth heating cooker of any one of Claims 1-5 provided with the light-shielding means on the upper surface of the top plate used as the viewing angle range of a 2nd infrared sensor.
JP2004283865A 2004-09-29 2004-09-29 Multi-neck heating cooker Expired - Fee Related JP4375185B2 (en)

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EP2613607B1 (en) * 2010-08-30 2016-11-30 Panasonic Corporation Induction heating apparatus
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