JP2013077584A - Induction heating cooker - Google Patents

Induction heating cooker Download PDF

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JP2013077584A
JP2013077584A JP2013015405A JP2013015405A JP2013077584A JP 2013077584 A JP2013077584 A JP 2013077584A JP 2013015405 A JP2013015405 A JP 2013015405A JP 2013015405 A JP2013015405 A JP 2013015405A JP 2013077584 A JP2013077584 A JP 2013077584A
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heating
top plate
infrared sensor
heating coil
center
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JP5301045B2 (en
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Hiroyasu Shiichi
広康 私市
Hiroshi Yamazaki
博史 山崎
Shigeyuki Nagata
滋之 永田
Kenichiro Nishi
健一郎 西
Akira Morii
彰 森井
Haruo Sakurai
治夫 櫻井
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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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)

Abstract

PROBLEM TO BE SOLVED: To provide an induction heating cooker in which the temperature is measured correctly by excluding influences from a neighboring heating coil or external light, the induction heating cooker being configured to detect infrared rays radiated from a cooking vessel with an infrared sensor, to determine the temperature of the cooking vessel on the basis of the quantity of infrared rays and to perform temperature control.SOLUTION: An induction heating cooker comprises a top plate, an operation section, a plurality of heating coils provided at front, right, and left sides on the top plate, an infrared sensor detecting infrared rays radiated from a cooking vessel, and a touch temperature sensor indirectly detecting heat of the cooking vessel via the top plate. The heating coils are configured while being divided into a plurality of bundles in a radial direction and the infrared sensor is provided only between the bundles of heating coils in a plane view, at a terminal side of the top plate outer than the center of the heating coils in a heating coil arrangement area and within an infrared sensor mounting area deeper than the center of the heating coils.

Description

この発明は、赤外線センサで調理容器から放射される赤外線を検出し、赤外線量に基づき調理容器の温度を求め、温度制御を行う誘導加熱調理器に関するものである。   The present invention relates to an induction heating cooker that detects infrared rays emitted from a cooking vessel with an infrared sensor, obtains the temperature of the cooking vessel based on the amount of infrared rays, and performs temperature control.

従来の誘導加熱装置においては、以下の構成のものがある。
調理物を加熱する調理容器を載置するトッププレートと、トッププレートを介して調理容器から放射された赤外線を検出する赤外線センサと、赤外線センサの受光したエネルギより調理容器の温度を換算する温度検出手段と、調理容器を加熱するために誘導磁界を発生させる加熱コイルと、温度検出手段の温度情報により前記加熱コイルの高周波電流を制御して調理容器の加熱電力量を制御する加熱制御手段と、加熱制御手段に加熱を行うための条件を入力する入力手段とを備え、赤外線センサは加熱コイルの中心から入力手段側の加熱コイル近傍に配した誘導加熱装置（例えば、特許文献１参照）。 Conventional induction heating devices include the following configurations.
A top plate on which a cooking vessel for heating the food is placed, an infrared sensor for detecting infrared rays emitted from the cooking vessel through the top plate, and temperature detection for converting the temperature of the cooking vessel from the energy received by the infrared sensor Heating means for generating an induction magnetic field to heat the cooking container, heating control means for controlling the heating power amount of the cooking container by controlling the high-frequency current of the heating coil according to temperature information of the temperature detection means, The heating control means is provided with an input means for inputting conditions for heating, and the infrared sensor is an induction heating device disposed in the vicinity of the heating coil on the input means side from the center of the heating coil (see, for example, Patent Document 1).

特開２００８−２６２７１９号公報（第１４頁、第６図）JP 2008-262719 A (page 14, FIG. 6)

従来の技術は、加熱コイルの中心から入力手段側の加熱コイル近傍、または、加熱コイルの中心からトッププレートの中心方向の加熱コイル近傍が、太陽光などの外光の影響を受けにくい為、赤外線センサを配置するために最も適した位置と述べている。
しかしながら、調理容器がトッププレートに積載されている状態では、調理容器により外光が遮断されるため、赤外線センサに外光は到達しない。むしろ、片手鍋の場合は、取っ手が誘導加熱調理器からはみだして邪魔にならないようにするため、加熱コイル中心に対して奥側に置かれる場合が多い、この場合、加熱コイルの中心から入力手段側の加熱コイル近傍に赤外線センサを配置すると、赤外線センサの直上に鍋がない場合もあり、正しく温度を計測できない欠点がある。
また、加熱コイルの中心からトッププレートの中心方向の加熱コイル近傍に赤外線センサを配置した場合、隣り合う加熱コイルからの熱により、トッププレートが加熱され、加熱されたトッププレートからの赤外線を受けて正しく温度を計測できない欠点がある。 In the conventional technology, the vicinity of the heating coil on the input means side from the center of the heating coil or the vicinity of the heating coil in the center direction of the top plate from the center of the heating coil is not easily affected by external light such as sunlight. It is said to be the most suitable position for placing the sensor.
However, in a state where the cooking container is mounted on the top plate, the outside light does not reach the infrared sensor because the outside light is blocked by the cooking container. Rather, in the case of a one-handed pan, in order to prevent the handle from sticking out of the induction heating cooker, it is often placed behind the center of the heating coil. In this case, the input means starts from the center of the heating coil. If an infrared sensor is arranged in the vicinity of the heating coil on the side, there may be no pan directly above the infrared sensor, and there is a disadvantage that the temperature cannot be measured correctly.
In addition, when an infrared sensor is arranged near the heating coil in the center direction of the top plate from the center of the heating coil, the top plate is heated by the heat from the adjacent heating coil, and receives infrared rays from the heated top plate. There is a drawback that the temperature cannot be measured correctly.

この発明は、上述のような課題を解決するためになされたものであり、調理容器の温度を正しく計測でき、適した調理を行うことができる誘導加熱調理器を得るものである。   This invention is made in order to solve the above subjects, and obtains the induction heating cooking appliance which can measure the temperature of a cooking container correctly and can perform suitable cooking.

この発明に係る誘導加熱調理器は、調理物を加熱する調理容器を載置するトッププレートと、前記トッププレートの手前左右に設けられ、前記調理容器を加熱するために誘導磁界を発生させる複数の加熱コイルと、前記トッププレートの手前側に設けられ、前記加熱コイルに加熱を行うための各種操作を行う操作部と、各々の前記加熱コイルに対して設けられ、この加熱コイルにより加熱される前記調理容器から放射された赤外線を検出する赤外線センサと、各々の前記加熱コイルに対して設けられ、前記調理容器の熱を前記トッププレートを介して間接的に検知する接触式温度センサと、を備え、前記加熱コイルは、半径方向に複数の束に分けて構成され、前記赤外線センサを、平面視における前記加熱コイルの前記束の間であって、前記加熱コイルの配置領域内のうち前記加熱コイル中心よりも外側の前記トッププレートの端部側で、かつ、前記加熱コイルの中心よりも奥側の赤外線ンサ搭載エリア内にのみ設けたものである。   An induction heating cooker according to the present invention is provided with a top plate for placing a cooking container for heating a cooked food, and a plurality of induction magnetic fields that are provided on the right and left sides of the top plate, and generate an induction magnetic field to heat the cooking container A heating coil, an operation unit that is provided on the front side of the top plate, performs various operations for heating the heating coil, and is provided for each of the heating coils, and is heated by the heating coil. An infrared sensor for detecting infrared radiation radiated from the cooking container, and a contact-type temperature sensor that is provided for each of the heating coils and indirectly detects the heat of the cooking container through the top plate. The heating coil is divided into a plurality of bundles in the radial direction, and the infrared sensor is disposed between the bundles of the heating coils in a plan view, At the end side of the outer side of the top plate than said heating coil center of the arrangement region of the heat coils, and in which the the center of the heating coil is provided only on the back side of the infrared capacitors mounted area.

この発明は、複数の加熱コイルを同時に動作させた場合でも、隣接する加熱コイルが動作することで、隣接加熱コイル自身から放射される赤外線、隣接する加熱コイルの直上に置かれた調理容器からの熱で加熱されたトッププレートから放射される赤外線の影響を受けずに、かつ、片手鍋がずれて置かれた場合でも、赤外線センサの直上には必ず調理容器が存在するため、正しく温度検知を行うことができる。   Even when a plurality of heating coils are operated at the same time, the present invention allows the adjacent heating coils to operate, so that the infrared radiation radiated from the adjacent heating coils themselves, from the cooking container placed immediately above the adjacent heating coils. Even when the pan is placed without being affected by the infrared rays radiated from the top plate heated by heat, the cooking container always exists immediately above the infrared sensor, so the temperature is detected correctly. It can be carried out.

この発明の実施の形態１を示す誘導加熱調理器の上面図である。It is a top view of the induction heating cooking appliance which shows Embodiment 1 of this invention. この発明の実施の形態１を示す誘導加熱調理器の側面図である。It is a side view of the induction heating cooking appliance which shows Embodiment 1 of this invention. この発明の実施の形態１を示す誘導加熱調理器の赤外センサ設置位置を示す図である。It is a figure which shows the infrared sensor installation position of the induction heating cooking appliance which shows Embodiment 1 of this invention. この発明の実施の形態２を示す誘導加熱調理器の上面図である。It is a top view of the induction heating cooking appliance which shows Embodiment 2 of this invention. この発明の実施の形態２を示す誘導加熱調理器の側面図である。It is a side view of the induction heating cooking appliance which shows Embodiment 2 of this invention.

実施の形態１．
図１はこの発明を実施するための実施の形態１における誘導加熱調理器の上面図を示すものであり、加熱コイルを３個搭載した誘導加熱調理器を上から見た図であり、赤外線センサの搭載位置を示すものである。図において、斜線部が赤外線センサの搭載エリアを示す。操作部から見て、搭載エリアは各加熱コイル中心から外側で、かつ奥側にある。図２はこの発明を実施するための実施の形態１における誘導加熱調理器の側面図を示すものであり、複数の加熱コイルのうち、１個の加熱コイルを側面から見た場合の構成を示すもので、１は調理容器、２はトッププレート、３はトッププレート裏面に印刷された遮光手段、４は加熱コイル、５は加熱コイルに設けられたフェライト、６は導光手段、７は赤外線センサ、８は基板、９はケース、１０は制御回路、１１はコイル及びフェライトを搭載する加熱コイル支持台を表す。図３はこの発明を実施するための実施の形態１における誘導加熱調理器の赤外線センサ設置位置を示すものであり、上から見たときの加熱コイル４とフェライト５と赤外線センサ７の位置関係を示す。図１、２、３を用いて動作の説明を実施する。 Embodiment 1 FIG.
FIG. 1 shows a top view of an induction heating cooker according to Embodiment 1 for carrying out the present invention, and is a view of an induction heating cooker equipped with three heating coils as viewed from above, and an infrared sensor. This indicates the mounting position. In the figure, the shaded area indicates the area where the infrared sensor is mounted. As viewed from the operation unit, the mounting area is on the outer side and the rear side from the center of each heating coil. FIG. 2: shows the side view of the induction heating cooking appliance in Embodiment 1 for implementing this invention, and shows the structure at the time of seeing one heating coil from the side among several heating coils. 1 is a cooking container, 2 is a top plate, 3 is a light shielding means printed on the back surface of the top plate, 4 is a heating coil, 5 is a ferrite provided on the heating coil, 6 is a light guiding means, and 7 is an infrared sensor. , 8 is a substrate, 9 is a case, 10 is a control circuit, and 11 is a heating coil support on which a coil and ferrite are mounted. FIG. 3 shows the infrared sensor installation position of the induction heating cooker according to Embodiment 1 for carrying out the present invention. The positional relationship among the heating coil 4, the ferrite 5, and the infrared sensor 7 when viewed from above is shown. Show. The operation will be described with reference to FIGS.

図示していないが、使用者が温度を設定して加熱スタートボタンを押すと、制御回路１０は加熱コイル４を所定の周波数で駆動し、このときの電力を測定する。調理容器１の有無で加熱コイルから見たインピーダンスが変化するため、電力の大小により調理容器１の有無を判定する。トッププレート２の裏には、赤外線センサ７の直上以外は、遮光の印刷３が施されている。そして、トッププレート２の上に調理容器１が載っている場合のみ、赤外線センサ７が受光した赤外線から温度に変換したデータを制御に使用する。即ち、電力の大小によって調理器が有ると判断された場合にのみ、調理容器１が赤外線センサ７の直上にあり、調理容器１により遮光されていると判断し、赤外線センサの出力を制御に使用しているため、外光の影響を排除できる。   Although not shown, when the user sets the temperature and presses the heating start button, the control circuit 10 drives the heating coil 4 at a predetermined frequency and measures the electric power at this time. Since the impedance viewed from the heating coil changes depending on the presence or absence of the cooking container 1, the presence or absence of the cooking container 1 is determined based on the magnitude of the electric power. On the back of the top plate 2, light-shielding printing 3 is applied except for the portion directly above the infrared sensor 7. And only when the cooking container 1 is mounted on the top plate 2, the data converted from the infrared rays received by the infrared sensor 7 into the temperature is used for control. That is, only when it is determined that there is a cooker due to the magnitude of electric power, it is determined that the cooking container 1 is directly above the infrared sensor 7 and is shielded from light by the cooking container 1, and the output of the infrared sensor is used for control. Therefore, the influence of external light can be eliminated.

赤外線センサ７の位置は図１に示すように各々の加熱コイル４の中心よりも外側で、かつ、奥側に設置しているので、複数の加熱コイル４を同時に動作させた場合でも、隣接する加熱コイル４が動作することで、隣接加熱コイル４自身から放射される赤外線、隣接する加熱コイル４の直上に置かれた調理容器１からの熱でトッププレート２が加熱され放射する赤外線の影響を受けずに、かつ、調理容器１が片手鍋で、柄の部分が誘導加熱調理器からはみ出して邪魔にならないように、奥側にずれて置かれた場合でも、赤外線センサ４の直上には必ず調理容器１が存在するため、正しく温度検知を行うことができる。   As shown in FIG. 1, the infrared sensor 7 is located outside and behind the center of each heating coil 4, so that it is adjacent even when a plurality of heating coils 4 are operated simultaneously. When the heating coil 4 is operated, the influence of the infrared rays radiated from the adjacent heating coils 4 themselves and the infrared rays emitted from the top plate 2 heated by the heat from the cooking container 1 placed immediately above the adjacent heating coils 4 are affected. Even if the cooking container 1 is a one-handed pan without being received, and the handle portion is shifted to the back so that it does not get out of the way of the induction heating cooker, it must be placed directly above the infrared sensor 4. Since the cooking container 1 exists, temperature detection can be performed correctly.

赤外線センサ４は加熱コイル２裏面に発生する磁束をコイル表面に誘導する為のフェライト５より下に設置してあり、かつ、放射状に設置してあるフェライト５の間にあるため、フェライト５により加熱コイル４からの磁束が遮断され、磁束により誤動作することがなく正しく温度を測定できる。さらに、ケース９を金属ケースにすることにより、さらに磁束の影響を排除できる。また、ケース９は加熱コイル支持台１１に取り付けることによりトッププレート２に設けられた遮光印刷を施していない部分との位置関係を精度良く保つことができる。   The infrared sensor 4 is installed below the ferrite 5 for inducing the magnetic flux generated on the back surface of the heating coil 2 to the coil surface, and is located between the ferrites 5 installed in a radial manner. The magnetic flux from the coil 4 is interrupted, and the temperature can be measured correctly without malfunction due to the magnetic flux. Furthermore, the influence of magnetic flux can be further eliminated by making the case 9 a metal case. Further, the case 9 is attached to the heating coil support 11 so that the positional relationship with the portion not provided with the light-shielding printing provided on the top plate 2 can be accurately maintained.

赤外線センサ７とトッププレート２の間には、金属または樹脂による円筒形の導光手段６を設けてある。これにより、加熱コイル４やトッププレート２の裏面から放射される赤外線を遮断して、調理容器１からの赤外線のみを赤外線センサ７に誘導でき正しく温度計測ができる。   A cylindrical light guide 6 made of metal or resin is provided between the infrared sensor 7 and the top plate 2. Thereby, the infrared rays radiated from the heating coil 4 and the back surface of the top plate 2 are blocked, and only the infrared rays from the cooking container 1 can be guided to the infrared sensor 7 and the temperature can be measured correctly.

実施の形態２．
図４はこの発明を実施するための実施の形態２における誘導加熱調理器の上面図を示すものであり、加熱コイルを３個搭載した誘導加熱調理器を上から見た場合の図であり、赤外線センサの搭載位置と接触式温度センサの位置を示すものである。図４において、斜線部が赤外線センサの搭載エリア（領域）、塗りつぶし部が接触式温度センサの搭載エリア（領域）をそれぞれ示す。操作部から見て、赤外線センサの搭載エリアは各加熱コイル中心から外側で、かつ奥側にある。図５はこの発明を実施するための実施の形態２における誘導加熱調理器の側面図を示すものであり、複数の加熱コイルのうち、１個の加熱コイルを側面から見た場合の構成を示す。
１は調理容器、２はトッププレート、３はトッププレート裏面に印刷された遮光手段、４は加熱コイル、５は加熱コイル４に設けられたフェライト、６は導光手段、７は赤外線センサ、８は基板、９はケース、１０は制御回路、１１は加熱コイル４及びフェライト５を搭載する加熱コイル支持台、１２は例えばサーミスタ等の接触式温度センサ、１３はトッププレート２の手前側に設けられ、加熱コイル４に加熱を行うための各種操作を行う操作部を表す。図４、５を用いて動作の説明を実施する。 Embodiment 2. FIG.
FIG. 4 shows a top view of the induction heating cooker according to Embodiment 2 for carrying out the present invention, and is a view when an induction heating cooker equipped with three heating coils is viewed from above. It shows the mounting position of the infrared sensor and the position of the contact-type temperature sensor. In FIG. 4, the shaded area indicates the mounting area (area) of the infrared sensor, and the shaded area indicates the mounting area (area) of the contact temperature sensor. When viewed from the operation unit, the area where the infrared sensor is mounted is outside the center of each heating coil and on the back side. FIG. 5: shows the side view of the induction heating cooking appliance in Embodiment 2 for implementing this invention, and shows the structure at the time of seeing one heating coil from the side among several heating coils. .
1 is a cooking container, 2 is a top plate, 3 is a light shielding means printed on the back surface of the top plate, 4 is a heating coil, 5 is a ferrite provided on the heating coil 4, 6 is a light guiding means, 7 is an infrared sensor, 8 Is a substrate, 9 is a case, 10 is a control circuit, 11 is a heating coil support on which the heating coil 4 and ferrite 5 are mounted, 12 is a contact temperature sensor such as a thermistor, and 13 is provided on the front side of the top plate 2. The operation part which performs various operation for heating the heating coil 4 is represented. The operation will be described with reference to FIGS.

実施形態１でも述べたように、図４の斜線エリア（加熱コイル４中心よりも奥側で、かつ、トッププレート２の端部側）に赤外線センサ４を設置することで、調理容器１が片手鍋で、柄の部分が誘導加熱調理器からはみ出して邪魔にならないように、奥側にずれて置かれた場合でも、赤外線センサ４の直上には必ず調理容器１が存在するため、正しく温度検知を行うことができる。また、隣接加熱コイル４自身から放射される赤外線の影響を受けずに、誤差が少ない。一方、接触式温度センサ１２は、加熱コイル４中心よりも操作部１３側で、かつ、トッププレート２中心側に設けられ、トッププレート２に接触して、調理容器１の熱をトッププレート２を介して間接的に検知している。このため、必ずしも、接触式温度センサ１２の直上に調理容器１が無くとも温度検知が可能である。また、隣接する加熱コイル４からの赤外線が放射されても原理的に温度検知の誤差の影響は受けない。   As described in the first embodiment, the cooking container 1 can be held in one hand by installing the infrared sensor 4 in the hatched area in FIG. 4 (the back side from the center of the heating coil 4 and the end side of the top plate 2). Even if the pan is placed on the back so that the handle does not get out of the way of the induction heating cooker, the cooking container 1 always exists immediately above the infrared sensor 4, so the temperature is detected correctly. It can be performed. Moreover, there is little error without being influenced by the infrared rays radiated from the adjacent heating coil 4 itself. On the other hand, the contact-type temperature sensor 12 is provided closer to the operation unit 13 than the center of the heating coil 4 and closer to the center of the top plate 2, and comes into contact with the top plate 2 to transfer the heat of the cooking container 1 to the top plate 2. It is detected indirectly via. For this reason, temperature detection is always possible even if the cooking container 1 is not directly above the contact-type temperature sensor 12. Further, even if infrared rays from adjacent heating coils 4 are emitted, they are not influenced by temperature detection errors in principle.

調理容器１の鍋底の温度分布は、図５に示すように同心円状の分布を示す。赤外線センサ７と接触式温度センサ１２を同心円上に配置することで、同じ温度分布帯を測定していることになり、両者を切り換えて使用する場合、温度差を少なくできるので、使用するセンサにより調理の仕上がりが異なることを防止できる。   The temperature distribution at the bottom of the cooking vessel 1 shows a concentric distribution as shown in FIG. By arranging the infrared sensor 7 and the contact-type temperature sensor 12 on a concentric circle, the same temperature distribution band is measured. When the two are switched and used, the temperature difference can be reduced. It is possible to prevent the cooking finish from being different.

制御回路１０は赤外線センサ７で検出した温度と接触式温度センサ１２で検出した温度を比較して、温度の高いほうを採用し、図示していないが、加熱コイル４への電流を制御して目標温度となるようにする。   The control circuit 10 compares the temperature detected by the infrared sensor 7 with the temperature detected by the contact-type temperature sensor 12, adopts the higher one, and controls the current to the heating coil 4 although not shown. Set the target temperature.

赤外線センサ７と接触式温度センサ１２の２つのセンサを備え、高いほうの温度を採用することで、安全性の高い誘導加熱調理器を提供できる。赤外線センサ７は隣接する加熱コイル４から離れた位置に設置するため、隣接する加熱コイル４からの赤外線の影響を受けずに誤差が少ない。また、調理容器１の積載位置は奥側にずれる傾向があるが、この場合でも赤外線センサ７の真上には調理容器１があり、調理容器１からの赤外線を確実に受光できる。接触式温度センサ１２を赤外線センサ７と対角の位置に置くことで、調理容器１が操作部側に置かれた場合でも、接触式温度センサ１２により温度検知ができる。また、検知温度の高いほうを採用するので、赤外線センサ７または接触式温度センサ１２の一方の直上に調理容器１が無く、もう一方の直上に調理容器１がある場合でも、調理容器１の位置を識別する必要がなく、自動的に最適なセンサが選択される。   By including the two sensors of the infrared sensor 7 and the contact temperature sensor 12 and adopting the higher temperature, an induction heating cooker with high safety can be provided. Since the infrared sensor 7 is installed at a position away from the adjacent heating coil 4, the error is small without being affected by the infrared rays from the adjacent heating coil 4. Further, the loading position of the cooking container 1 tends to shift to the back side, but even in this case, the cooking container 1 is directly above the infrared sensor 7 and can reliably receive infrared rays from the cooking container 1. By placing the contact-type temperature sensor 12 at a position diagonal to the infrared sensor 7, the temperature can be detected by the contact-type temperature sensor 12 even when the cooking container 1 is placed on the operation unit side. In addition, since the higher detection temperature is used, the position of the cooking container 1 can be obtained even when the cooking container 1 is not directly above one of the infrared sensor 7 or the contact temperature sensor 12 and the cooking container 1 is just above the other. The optimum sensor is automatically selected.

１ 調理容器、２ トッププレート、３ 遮光印刷、４ 加熱コイル、５ フェライト、６ 導光手段、７ 赤外線センサ、８ 基板、９ ケース、１０ 制御回路、１１ 加熱コイル支持台、１２ 接触式温度センサ、１３ 操作部。   DESCRIPTION OF SYMBOLS 1 Cooking container, 2 Top plate, 3 Shading printing, 4 Heating coil, 5 Ferrite, 6 Light guide means, 7 Infrared sensor, 8 Substrate, 9 Case, 10 Control circuit, 11 Heating coil support stand, 12 Contact type temperature sensor, 13 Operation unit.

Claims (5)

調理物を加熱する調理容器を載置するトッププレートと、
前記トッププレートの手前左右に設けられ、前記調理容器を加熱するために誘導磁界を発生させる複数の加熱コイルと、
前記トッププレートの手前側に設けられ、前記加熱コイルに加熱を行うための各種操作を行う操作部と、
各々の前記加熱コイルに対して設けられ、この加熱コイルにより加熱される前記調理容器から放射された赤外線を検出する赤外線センサと、
各々の前記加熱コイルに対して設けられ、前記調理容器の熱を前記トッププレートを介して間接的に検知する接触式温度センサと、を備え、
前記加熱コイルは、半径方向に複数の束に分けて構成され、
前記赤外線センサを、平面視における前記加熱コイルの前記束の間であって、
前記加熱コイルの配置領域内のうち前記加熱コイル中心よりも外側の前記トッププレートの端部側で、かつ、前記加熱コイルの中心よりも奥側の赤外線センサ搭載エリア内にのみ設けたことを特徴とする誘導加熱調理器。 A top plate on which a cooking container for heating the food is placed;
A plurality of heating coils provided on the front left and right of the top plate and generating an induction magnetic field to heat the cooking vessel;
An operation unit that is provided on the near side of the top plate and that performs various operations for heating the heating coil;
An infrared sensor that is provided for each of the heating coils and detects infrared rays emitted from the cooking vessel heated by the heating coils;
A contact temperature sensor that is provided for each of the heating coils and indirectly detects the heat of the cooking vessel via the top plate;
The heating coil is divided into a plurality of bundles in the radial direction,
The infrared sensor between the bundles of the heating coils in plan view,
It is provided only in the infrared sensor mounting area on the end side of the top plate outside the center of the heating coil and in the back side of the center of the heating coil in the arrangement area of the heating coil. Induction heating cooker. 前記複数の加熱コイルは、前記トッププレートの手前左右及び前記トッププレート中央奥側に設置されていることを特徴とする請求項１記載の誘導加熱調理器。   The induction heating cooker according to claim 1, wherein the plurality of heating coils are installed on the front left and right sides of the top plate and on the center back side of the top plate. 前記赤外線センサを、前記トッププレート中央奥側に設置された前記加熱コイルの配置領域内のうち前記加熱コイル中心よりも奥側の前記トッププレートの端部側の赤外線センサ搭載エリア内にのみ設けたことを特徴とする請求項１又は２に記載の誘導加熱調理器。   The infrared sensor is provided only in the infrared sensor mounting area on the end side of the top plate behind the center of the heating coil in the arrangement area of the heating coil installed in the center back side of the top plate. The induction heating cooker according to claim 1 or 2, characterized in that. 前記赤外線センサと前記接触式温度センサが検出した温度を比較し、温度の高い方を採用して制御を行うことを特徴とする請求項１〜３のいずれかに記載の誘導加熱調理器。   The induction heating cooker according to any one of claims 1 to 3, wherein the temperature detected by the infrared sensor and the contact temperature sensor is compared, and control is performed by adopting a higher temperature. 前記赤外線センサと前記接触式温度センサを、略同心円上に設けたことを特徴とする請求項１〜４のいずれかに記載の誘導加熱調理器。   The induction heating cooker according to any one of claims 1 to 4, wherein the infrared sensor and the contact temperature sensor are provided on substantially concentric circles.
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