JP2009238613A - Induction heating cooking appliance - Google Patents

Induction heating cooking appliance Download PDF

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Publication number
JP2009238613A
JP2009238613A JP2008083800A JP2008083800A JP2009238613A JP 2009238613 A JP2009238613 A JP 2009238613A JP 2008083800 A JP2008083800 A JP 2008083800A JP 2008083800 A JP2008083800 A JP 2008083800A JP 2009238613 A JP2009238613 A JP 2009238613A
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heated
induction heating
display
top plate
area
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JP5106201B2 (en
Inventor
Tomoteru Tsukada
智輝 束田
Sansei Kabashima
山青 椛島
Hiroshi Shigehara
浩 重原
Takeshi Nakamachi
剛 中町
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/06Control, e.g. of temperature, of power
    • H05B6/062Control, e.g. of temperature, of power for cooking plates or the like
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05Heating plates with pan detection means

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

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an induction heating cooking appliance capable of arranging a heated object at any position on a top plate, and with which a user can instinctively recognize an area where another heated object can be placed and an area where no more objects can be placed. <P>SOLUTION: An inverter 72 converts direct-current power from a converter 71 into high-frequency alternating current and supplies it to induction heating coils 4 uniformly arranged in dispersion and a resonating capacitor 75. A sensor 76, provided at a center of the induction heating coils 4 or between the induction heating coils 4 themselves, detects a pan 2 on the top plate 3. A control means 74 compares an output of the sensor 76 with a reference value, and decides on existence of the pan when the output of the sensor 76 goes beyond the reference value, and estimates the size of an arrangement position (a center position) and a size of an occupied area of the pan. The control means 74 changes a display mode of a corresponding area of the display part 5 based on its 74 estimation result, also displays an operating part 73 at the same time, and validates a function of the operating part 73. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、誘導加熱コイルを用いた誘導加熱調理器に関するものであり、特に、鍋などの被加熱物の天板上の配置位置とその表示に関するものである。   The present invention relates to an induction heating cooker using an induction heating coil, and particularly to an arrangement position on a top plate of a heated object such as a pan and its display.

従来の誘導加熱調理器においては、トッププレート上の被加熱物を加熱する複数(3つ)の加熱部と、被加熱物の加熱状態を表示する火力表示部と、操作部とを備え、複数の加熱部のすべてを誘導加熱コイルを含む加熱部とするとともに、火力表示部をトッププレート上において、それぞれの加熱部に対応させて各加熱部の近くに複数の操作部を各火力表示部に併設させ、さらに加熱部による火力を火力表示部に数値化して表示することにより、各加熱部との関連において火力状態を見ながら視線を変えることなく、火力変更など個別の操作ができるという使い勝手の良いものがあった(例えば特許文献1参照)。   A conventional induction heating cooker includes a plurality of (three) heating units that heat the object to be heated on the top plate, a thermal power display unit that displays the heating state of the object to be heated, and an operation unit. All of the heating parts are heating parts including induction heating coils, and the thermal power display parts are arranged on the top plate so that the respective heating parts correspond to the respective heating parts. In addition, the thermal power from the heating unit is digitized and displayed on the thermal power display unit, making it possible to perform individual operations such as changing the thermal power without changing the line of sight while looking at the thermal power status in relation to each heating unit. There was a good one (see, for example, Patent Document 1).

また、調理容器を載置する天板の下方に2つの誘導加熱コイルを配設するとともに、各誘導加熱コイルに対応してその近傍に温度検知器と誘導加熱コイルの火力を複数色で表示する2つの火力表示器と、誘導加熱コイルの動作状態を表示する2つの加熱状態表示器と、制御回路とを備え、温度検知器等の出力に応じて天板の誘導加熱コイル上方への調理容器の有無や調理容器の材質を検出する鍋検出手段を設けると共に、制御回路を、鍋検出手段により鍋有りを検出した時には調理内容に応じて加熱状態表示器を異なる色で点灯駆動し、鍋無し等を検出した時には火力表示器と加熱状態表示器を点滅駆動する様に構成したものがあった(例えば特許文献2参照)。   In addition, two induction heating coils are arranged below the top plate on which the cooking container is placed, and the thermal detectors and the heating power of the induction heating coils are displayed in a plurality of colors in the vicinity corresponding to each induction heating coil. A cooking container provided with two heating power indicators, two heating state indicators for displaying the operating state of the induction heating coil, and a control circuit, and above the induction heating coil of the top plate according to the output of the temperature detector or the like There is a pan detection means to detect the presence or absence of the cooking container and the material of the cooking container, and when the pan detection means detects the presence of a pan, the heating state indicator is lit in different colors according to the cooking content, and there is no pan In some cases, the thermal power indicator and the heating state indicator are blinked when detecting the above (for example, see Patent Document 2).

また、負荷を載置する天板と、負荷を加熱制御する加熱手段の加熱動作を操作する2つのタッチ操作部とを備え、それぞれのタッチ操作部の操作部は、天板の下方に配置した表示文字と点灯時に天板を透過して表示文字を表示するバックライトとを有し、操作部を非表示の時には、表示文字も含めて操作部全体を消灯状態とするとともに操作部の操作を無効とすることにより、使用者に無効であるということをはっきりと認識させることができ、使い勝手を良くしたものがあった(例えば特許文献3参照)。   Also, a top plate for placing the load and two touch operation units for operating the heating operation of the heating means for controlling the heating of the load are provided, and the operation units of the respective touch operation units are arranged below the top plate. It has a display character and a backlight that displays the display character through the top plate when lit, and when the operation unit is not displayed, the entire operation unit including the display character is turned off and the operation unit is operated. By disabling it, the user can clearly recognize that it is invalid, and there is one that improves usability (for example, see Patent Document 3).

特開2007−18786号公報(第2頁〜第4頁、図1、図2)JP 2007-18786 A (pages 2 to 4, FIGS. 1 and 2) 特開2003−197360号公報(第4頁、図2)JP 2003-197360 A (page 4, FIG. 2) 特開2007−107800号公報(第5頁、図1、図3、図5)JP 2007-107800 A (page 5, FIG. 1, FIG. 3, FIG. 5)

しかしながら、特許文献1〜3に記載された従来の加熱調理器のいずれも、天板上の鍋などの被加熱物の固定された載置位置に対応して火力表示部や加熱状態表示器や操作部も固定されていた。このため、ユーザーは被加熱物を天板上の自由な位置に載置することができず、操作性の自由度が大きく損なわれるという問題点があった。
また、被加熱物を天板上の自由な位置に載置することができるようにすると、被加熱物のサイズや形状に制限がないという利便性はあるものの、どの位置に被加熱物を追加して載置できるのかがわかりにくいという問題があった。
However, any of the conventional heating cookers described in Patent Documents 1 to 3 correspond to the mounting position where the heated object such as a pan on the top plate is fixed. The operation unit was also fixed. For this reason, the user cannot place the object to be heated at a free position on the top board, and there is a problem that the degree of freedom in operability is greatly impaired.
In addition, if the object to be heated can be placed at a free position on the top plate, there is no restriction on the size or shape of the object to be heated, but the object to be heated is added to any position. There was a problem that it was difficult to see whether it could be placed.

この発明は、上記のような課題を解決するためになされたものであり、第1の目的は鍋などの被加熱物を天板上の自由な位置に配置でき、天板上の、被加熱物の占有領域、追加して被加熱物が置ける領域、および追加して置けない領域をユーザーが直感的に理解できる誘導加熱調理器を得ることにある。   The present invention has been made to solve the above-described problems, and a first object is to arrange a heated object such as a pan in a free position on the top plate. An object of the present invention is to provide an induction heating cooker in which a user can intuitively understand an area occupied by an object, an area where an object to be heated can be additionally placed, and an area where an object cannot be additionally placed.

この発明に係る誘導加熱調理器は、鍋などの被加熱物を載置する天板と、天板の下方にほぼ均一に分散配置された複数の誘導加熱コイルと、載置された被加熱物の位置を検出する被加熱物検出手段と、被加熱物が載置されていない領域に他の被加熱物を載置可能か否か判断する載置可能性判断手段と、載置可能性判断手段の判断結果に応じて、他の被加熱物の載置可能領域を表示する表示手段と、を備えたものである。   An induction heating cooker according to the present invention includes a top plate on which a heated object such as a pan is placed, a plurality of induction heating coils that are substantially uniformly distributed below the top plate, and the placed heated object. A heated object detecting means for detecting the position of the heated object, a placing possibility judging means for judging whether or not another heated object can be placed in a region where the heated object is not placed, and a placing possibility judgment Display means for displaying a region where other objects to be heated can be placed according to the determination result of the means.

この発明に係る誘導加熱調理器によれば、鍋などの被加熱物を載置する天板と、天板の下方にほぼ均一に分散配置された複数の誘導加熱コイルと、載置された被加熱物の位置を検出する被加熱物検出手段と、被加熱物が載置されていない領域に他の被加熱物を載置可能か否か判断する載置可能性判断手段と、載置可能性判断手段の判断結果に応じて、他の被加熱物の載置可能領域を表示する表示手段と、を備えたので、ユーザーは鍋などの被加熱物を天板上の自由な位置に配置でき、天板上の、被加熱物の占有領域、追加して被加熱物が置ける領域、および追加して置けない領域をユーザーが直感的に理解できる。   According to the induction heating cooker according to the present invention, a top plate on which an object to be heated such as a pan is placed, a plurality of induction heating coils that are substantially uniformly distributed below the top plate, and the placed subject. A heated object detecting means for detecting the position of the heated object, a placement possibility judging means for judging whether or not another heated object can be placed in a region where the heated object is not placed, and placing is possible Display means for displaying the area where other objects to be heated can be placed according to the determination result of the sex determination means, so that the user can place the objects to be heated such as pans at free positions on the top plate The user can intuitively understand the area occupied by the object to be heated, the area where the object to be heated can be additionally placed, and the area where the object to be heated cannot be additionally placed on the top board.

実施の形態1.
図1はこの発明に係る誘導加熱調理器の斜視図であり、同時に天板を透視した状態を示しており、誘導加熱コイルの配置状況を分かりやすく図示している。図1に示すように、誘導加熱調理器は、本体1と、本体の上部に設けられ、鍋などの被加熱物2を載置可能な天板3と、天板3の下方に設けられた誘導加熱コイル4と、天板3の手前に設けられた表示部5と図示しないタッチパネルと、本体1側に設けられた本体側操作部6とロースタ7から構成される。なお、表示部5は表示手段を構成し、タッチパネルは操作表示手段を構成する。また、図1に示すように、天板3の下方には、比較的小型の誘導加熱コイル4(以下、小型コイルと呼ぶこともある)がほぼ均一的に分散配置されている。
Embodiment 1 FIG.
FIG. 1 is a perspective view of an induction heating cooker according to the present invention, showing a state in which the top plate is seen through at the same time, and showing the arrangement of induction heating coils in an easy-to-understand manner. As shown in FIG. 1, the induction heating cooker is provided at the top of the main body 1, the top of the main body and on which a heated object 2 such as a pan can be placed, and below the top 3. It is comprised from the induction heating coil 4, the display part 5 provided in front of the top plate 3, the touch panel which is not shown in figure, the main body side operation part 6 and the roaster 7 which were provided in the main body 1 side. The display unit 5 constitutes display means, and the touch panel constitutes operation display means. In addition, as shown in FIG. 1, relatively small induction heating coils 4 (hereinafter also referred to as small coils) are distributed almost uniformly below the top plate 3.

また、図2は天板3と表示部5のレイアウトを示した図であり、図2(a)では、表示部5の表示領域は、図2(a)に示すように天板3の手前側でしかも天板3の縁に沿って天板の両端に渡って左右方向(以下、X軸方向と呼ぶこともある)に線状に連続して表示される。この表示部5は本体の横または裏側に設けられた電源スイッチが押されるまでは表示されず、電源スイッチを押すと、すべての領域が白色に点灯する。この白色は鍋などの被加熱物が載置可能であることを示している。なお、この実施の形態1では被加熱物を天板3の左右方向に略一列に配置する場合について説明する。図2(b)は対面式の誘導加熱調理器の場合を想定したものであり、手前側のX軸方向と奥側のX軸方向に帯状の表示部5を配した例を示す図である。手前側と奥側の双方に表示部5が表示され、手前側と奥側のいずれからも調理が可能である。   2 is a diagram showing the layout of the top board 3 and the display unit 5. In FIG. 2 (a), the display area of the display unit 5 is in front of the top board 3 as shown in FIG. 2 (a). On the side and along the edge of the top plate 3, it is displayed continuously in the left-right direction (hereinafter also referred to as the X-axis direction) linearly across the top plate. The display unit 5 is not displayed until the power switch provided on the side or the back side of the main body is pressed. When the power switch is pressed, all areas are lit in white. This white color indicates that an object to be heated such as a pan can be placed. In the first embodiment, the case where the objects to be heated are arranged in a substantially line in the left-right direction of the top 3 will be described. FIG. 2B is a diagram showing an example of a face-to-face induction heating cooker, and shows an example in which strip-like display units 5 are arranged in the front X-axis direction and the back X-axis direction. . The display unit 5 is displayed on both the near side and the far side, and cooking is possible from either the near side or the far side.

また、図3はこの発明に係る誘導加熱調理器の被加熱物の載置位置に連動した表示部5の表示例を示す図である。図3(a)では、被加熱物2として天板3の略中央に載置された鍋と右側に載置されたフライパンのそれぞれに対応する手前側の表示部5の色が赤く点灯して調理中であるところを示すとともに、表示部5の左端が白色のままで被加熱物を追加可能であることを示している。図3(b)では、被加熱物2として天板3の略中央に載置された鍋に対応する手前側の表示部5の色が赤く点灯して調理中であるところを示すとともに、その両側の表示部5は白色のままで更に2つの被加熱物が載置可能であることを示している。また、図3(c)では、被加熱物2として天板3の左側に載置された大きなパントレイに対応する手前側の表示部5の色が緑色に点灯して載置したところを示すとともに、表示部の右側は白色のままで被加熱物を追加可能であることを示している。ここで、ユーザーが加熱調理を行わない金属のボウルを天板上に置いた場合、洗った鍋を取り敢えず天板上に置いた場合、保存しておいた料理が入った鍋を取り敢えず天板上に出してまだ加熱しなくていい場合等、物の載置に対応して操作部が表示されることにより却って不安に感じる場合がある。そこで、図3(a)〜図3(c)に示すように、各加熱物2の手前に表示を消すための操作部73として非表示ボタンを表示する。非使用の場合には、この操作部73(非表示ボタン)を操作することで表示部5の色が元の白に戻るように構成されている。なお、操作部73は操作手段を構成する。   Moreover, FIG. 3 is a figure which shows the example of a display of the display part 5 interlock | cooperated with the mounting position of the to-be-heated material of the induction heating cooking appliance concerning this invention. In Fig.3 (a), the color of the display part 5 of the near side corresponding to each of the pan mounted in the approximate center of the top plate 3 as the to-be-heated object 2 and the frying pan mounted on the right side is lit red. While showing that it is cooking, it shows that the to-be-heated object can be added while the left end of the display part 5 remains white. In FIG.3 (b), while the color of the display part 5 of the near side corresponding to the pan mounted in the approximate center of the top plate 3 as the to-be-heated object 2 lights in red, it shows that it is cooking, and the The display portions 5 on both sides remain white and indicate that two further objects to be heated can be placed. FIG. 3C shows a place where the color of the front display unit 5 corresponding to a large pan tray placed on the left side of the top 3 as the object to be heated 2 is lit in green and placed. The right side of the display portion remains white, indicating that an object to be heated can be added. Here, when the user puts a metal bowl that is not cooked on the top plate, if the user puts the washed pan on the top plate, the pan containing the stored dishes is not on the top plate. If the operation unit is displayed in response to the placement of the object, the user may feel uneasy. Therefore, as shown in FIG. 3A to FIG. 3C, a non-display button is displayed as the operation unit 73 for turning off the display in front of each heated object 2. In the case of non-use, the operation unit 73 (non-display button) is operated so that the color of the display unit 5 returns to the original white. The operation unit 73 constitutes an operation unit.

また、図4はこの発明に係る誘導加熱調理器の誘導加熱コイル(小型コイル)4のレイアウトを示す図である。図4(a)に示すように、小型コイル4をグリッド状に配置しても良いし、図4(b)に示すように、小型コイル4をハニカム状に配置しても良いし、図4(c)に示すように、従来の大型の誘導加熱コイルと上記小型コイル4を混在させて配置しても良い。   Moreover, FIG. 4 is a figure which shows the layout of the induction heating coil (small coil) 4 of the induction heating cooking appliance which concerns on this invention. As shown in FIG. 4 (a), the small coils 4 may be arranged in a grid shape, or as shown in FIG. 4 (b), the small coils 4 may be arranged in a honeycomb shape. As shown in (c), a conventional large induction heating coil and the small coil 4 may be mixed and arranged.

また、図5は被加熱物2検出用のセンサー(図7に示すセンサー76)としてサーミスタなどの赤外線を検出する温度検出手段あるいは小型コイル4間の容量を検出する容量検出手段を用いた場合のレイアウトを示す図であり、センサーを図5(a)に示すように小型コイル4間の隙間に配置しても良いし、図5(b)に示すように小型コイル4の中心に配置しても良いし、図5(c)に示すように小型コイル4間の隙間および小型コイル4の中心に配置しても良い。
図5(a)〜(c)の黒丸で示された複数のセンサー76によって天板3上の被加熱物の載置位置がセンシングされる。被加熱物が天板上に載置されると、センサー76が天板上の被加熱物の載置位置を検知し、これに基づいて加熱調理器の図示しない制御手段が鍋の天板3上の被加熱物の配置位置(具体的には中心位置)と大きさ(底径)を算出し、これに基づいて被加熱物の占有領域に対向する表示部5の部分の色を白から緑色に変化させる。また、ユーザーが加熱開始の操作を行うと、制御手段は被加熱物の占有領域に対向する部分の小型コイル4を制御して加熱を開始し、表示部5の被加熱物に対応する部分の色はオレンジ色に変化する。そして、制御手段は被加熱物の加熱温度に連動して表示部5の色を例えばオレンジ色から赤色に変化させる。
センサーが温度検出手段の場合、誘導加熱調理器は、加熱開始後、所定の時間が経過してから全ての温度検出手段のうち、温度が所定の値(例えば、70℃)より高くなった温度検出手段を特定し、特定した温度検出手段の真上に被加熱物2があるものと判断し、特定した複数の温度検出手段の配置位置から天板3上の被加熱物2の配置位置と大きさを算出する。
FIG. 5 shows a case where a temperature detecting means for detecting infrared rays such as a thermistor or a capacity detecting means for detecting the capacity between the small coils 4 is used as a sensor for detecting the object to be heated 2 (sensor 76 shown in FIG. 7). FIG. 5 is a diagram showing a layout, and a sensor may be arranged in a gap between the small coils 4 as shown in FIG. 5A, or may be arranged in the center of the small coils 4 as shown in FIG. 5B. Alternatively, as shown in FIG. 5 (c), the gaps between the small coils 4 and the center of the small coils 4 may be arranged.
The placement position of the object to be heated on the top 3 is sensed by a plurality of sensors 76 indicated by black circles in FIGS. When the object to be heated is placed on the top plate, the sensor 76 detects the placement position of the object to be heated on the top plate, and based on this, the control means (not shown) of the cooking device serves as the top plate 3 of the pan. The arrangement position (specifically, the center position) and size (bottom diameter) of the object to be heated are calculated, and based on this, the color of the portion of the display unit 5 facing the area occupied by the object to be heated is changed from white. Change to green. When the user performs an operation to start heating, the control unit starts heating by controlling the small coil 4 in the portion facing the occupation area of the object to be heated. The color changes to orange. Then, the control means changes the color of the display unit 5 from, for example, orange to red in conjunction with the heating temperature of the object to be heated.
When the sensor is a temperature detection means, the induction heating cooker is the temperature at which the temperature becomes higher than a predetermined value (for example, 70 ° C.) among all the temperature detection means after a predetermined time has elapsed after the start of heating. The detection means is specified, it is determined that the object to be heated 2 is directly above the specified temperature detection means, and the arrangement position of the object to be heated 2 on the top plate 3 is determined from the arrangement positions of the plurality of specified temperature detection means. Calculate the size.

また、図6は被加熱物2のセンサーとして発光手段と受光手段を用いた場合の光の照射方法を分かりやすく示した説明図であり、図6(a)に示すようにセンサーをユーザー側の天板3側面に設けても良いし、図6(b)に示すように天板3の上方に配置しても良い。また、図示していないが、センサーを天板3の斜め上方に配置しても良い。この場合、誘導加熱調理器は、発光手段からの放射光が受光手段に受光されるときの光の入射角度とセンサーの配置位置および天板3の配置位置と大きさに基づいて天板3上の被加熱物2の配置位置と大きさを算出することができる。なお、センサーを天板3側面に設ける場合には、2台のセンサーを異なる位置に設けると精度が良くなる。あるいは、1台のセンサーを天板3の縁に沿って設けられたレール上に乗せて走らせるなどして水平方向に移動可能に構成して、このセンサーを移動させながら被加熱物2を観測することにより、被加熱物2を検出できたセンサーの位置に基づき被加熱物2の配置位置を検出するようにしても良い。これについては、水平方向だけでなく、上下方向についても同じことが言える。   FIG. 6 is an explanatory diagram showing the light irradiation method when the light emitting means and the light receiving means are used as the sensor of the object to be heated 2 in an easy-to-understand manner. As shown in FIG. You may provide in the top plate 3 side surface, and may arrange | position above the top plate 3 as shown in FIG.6 (b). Although not shown, the sensor may be disposed obliquely above the top 3. In this case, the induction heating cooker is arranged on the top plate 3 based on the incident angle of the light when the light emitted from the light emitting means is received by the light receiving means, the sensor placement position, and the placement position and size of the top board 3. The arrangement position and size of the object to be heated 2 can be calculated. In addition, when providing a sensor in the side surface of the top plate 3, if two sensors are provided at different positions, the accuracy is improved. Alternatively, one sensor is placed on a rail provided along the edge of the top plate 3 so that it can be moved in the horizontal direction, and the object to be heated 2 is observed while moving this sensor. Thus, the arrangement position of the heated object 2 may be detected based on the position of the sensor that can detect the heated object 2. The same can be said for the vertical direction as well as the horizontal direction.

また、図7は、この発明に係る誘導加熱調理器の実施の形態1における回路構成を示すブロック図である。図7に示すように誘導加熱調理器は、商用交流電力を直流電力に変換するコンバータ71とコンバータ71の出力を高周波の交流電力に変換するインバータ72と、操作部73を用いてユーザーによって設定された火力設定情報に基づいて、出力周波数を設定し、PWM演算を行い、インバータ駆動信号を生成してインバータ72を制御する制御手段74と、インバータ72によって駆動され共振コンデンサ75とともに動作して高周波磁界を発生する誘導加熱コイル(小型コイル)4と、誘導加熱コイル4の中心または誘導加熱コイル4同士の間に設けられ、天板3上の被加熱物2を検出するセンサー76と、センサー76から出力された信号を増幅して基準値と比較してノイズを除去し、A/D変換する鍋検出回路77と、天板3の周囲に設けられた表示部5および操作部73の表示領域であるタッチパネル78とから構成される。なお、操作部73には非表示ボタンも含まれる。
なお、図7において、誘導加熱コイル4、共振コンデンサ75、センサー76は1つだけ示されているが、実際には多数配置されている。
また、制御手段74が鍋検出回路77の出力に基づいて被加熱物2が無いと判定した場合には、誘導加熱コイル4に高周波電流を供給しないようにインバータ72を制御する。
Moreover, FIG. 7 is a block diagram which shows the circuit structure in Embodiment 1 of the induction heating cooking appliance concerning this invention. As shown in FIG. 7, the induction heating cooker is set by a user using a converter 71 that converts commercial AC power into DC power, an inverter 72 that converts the output of the converter 71 into high-frequency AC power, and an operation unit 73. Based on the thermal power setting information, the output frequency is set, the PWM calculation is performed, the inverter drive signal is generated and the inverter 72 is controlled, and the control means 74 that is driven by the inverter 72 and operates with the resonance capacitor 75 to operate the high frequency magnetic field. From the induction heating coil (small coil) 4 that generates the heat, the center of the induction heating coil 4 or between the induction heating coils 4, and the sensor 76 that detects the object 2 to be heated on the top 3. A pan detection circuit 77 that amplifies the output signal and compares it with a reference value to remove noise and perform A / D conversion. Composed of the touch panel 78. which is a display area of the display unit 5 and the operating unit 73 is provided. The operation unit 73 includes a non-display button.
In FIG. 7, only one induction heating coil 4, resonant capacitor 75, and sensor 76 are shown, but a large number are actually arranged.
Further, when the control means 74 determines that there is no object to be heated 2 based on the output of the pan detection circuit 77, the inverter 72 is controlled so as not to supply a high frequency current to the induction heating coil 4.

また、制御手段74はマイクロコンピュータやDSPなどで構成され、被加熱物2の有無を判断するときには鍋検出回路77の出力を予め設定した基準値と比較し、この出力が基準値を超えたときに被加熱物2有りと判定し、被加熱物2の位置と大きさを判断する。
また、インバータ72からの高周波電流の周波数が共振周波数のときに誘導加熱コイル4は最大の磁界すなわち最大加熱力を出力する。
また、センサー76は図4に示す温度検出手段あるいは容量検出手段、あるいは図5に示す発光手段および受光手段等、物が置かれている領域を検知できる手段が用いられる。
また、上記説明では被加熱物2として鍋を例に挙げて説明したが、鍋に限定されるものでなく、他の金属製容器(特に鉄系容器)でも良い。
Further, the control means 74 is constituted by a microcomputer, a DSP, etc., and when judging the presence or absence of the object to be heated 2, the output of the pan detecting circuit 77 is compared with a preset reference value, and when this output exceeds the reference value It is determined that there is an object to be heated 2 and the position and size of the object to be heated 2 are determined.
Further, when the frequency of the high-frequency current from the inverter 72 is the resonance frequency, the induction heating coil 4 outputs the maximum magnetic field, that is, the maximum heating force.
As the sensor 76, means capable of detecting an area where an object is placed, such as temperature detecting means or capacity detecting means shown in FIG. 4, or light emitting means and light receiving means shown in FIG. 5, is used.
In the above description, a pan is taken as an example of the article 2 to be heated. However, the pan is not limited to a pan, and other metal containers (particularly iron-based containers) may be used.

また、表示部5はLEDやLCDで構成されるが、有機EL、CRT、PDP(プラズマディスプレイ)、小型プロジェクター、DLP(登録商標)など表示できる微少素子を多数個配置して構成され連続領域を表示できる材料で構成されるものであればどのようなものを用いて構成しても良い。また、表示部5を天板3の周囲にその縁に沿って設け、操作部73の画像と画像の中心位置(座標)と対応させて記憶手段に予め記憶させておき、必要時に制御手段74が表示部5の被加熱物を投影した領域に合わせて操作部73の表示を行うことができる。 また、操作部73(非表示ボタン)の画像を予め記憶手段に記憶させておき、制御手段74が被加熱物2の中心位置に合わせて操作部73の画像を表示し、制御手段74がユーザーによって操作された操作部73の位置を制御手段74によって算出された天板上の被加熱物2の中心位置と照合することで、どの被加熱物2の操作部73が押されたかを特定することができる。
なお、この他に本体1側に設けられた本体側操作部6とロースタ7の制御回路もあるが、この発明とは関係ないため、説明を省略する。
The display unit 5 is composed of an LED or an LCD, and is composed of a large number of displayable elements such as organic EL, CRT, PDP (plasma display), small projector, DLP (registered trademark), and has a continuous area. Any material that can be displayed may be used. Further, the display unit 5 is provided around the top plate 3 along the edge thereof, and is stored in advance in the storage unit in association with the image of the operation unit 73 and the center position (coordinates) of the image, and the control unit 74 when necessary. However, the operation unit 73 can be displayed in accordance with the area of the display unit 5 onto which the object to be heated is projected. Further, an image of the operation unit 73 (non-display button) is stored in advance in the storage unit, the control unit 74 displays the image of the operation unit 73 in accordance with the center position of the object to be heated 2, and the control unit 74 is the user. By comparing the position of the operation unit 73 operated by the control unit 74 with the center position of the object 2 to be heated on the top plate, the operation unit 73 of the object 2 to be heated is identified. be able to.
In addition, there is a control circuit for the main body side operation unit 6 and the roaster 7 provided on the main body 1 side, but since it is not related to the present invention, the description thereof is omitted.

図8は、この発明に係る誘導加熱調理器の天板3上での被加熱物2と表示部5の表示との関係を示す説明図である。
次に、被加熱物2と表示部5の表示との関係について図8を用いて説明する。
調理を行う場合には、まずユーザーは誘導加熱調理器本体1の例えば横や背面に設けられた図示しない主電源用スイッチを投入する。これにより、誘導加熱調理器の上部は図8(a)の状態から図8(b)に示すように誘導加熱調理器の天板3の手前側の縁に沿って左右方向(X軸方向)に天板の両端に渡って被加熱物2の載置が可能であることを示す白色の表示部5が表示され、同時に制御手段74が周期的に天板3上に被加熱物2が載置されたか否かをセンサー76を用いて監視する。
ユーザーが天板3の上に被加熱物2として例えば鍋を載置すると、図8(c)に示すように鍋の手前の表示部5の鍋の大きさ(底径)と同じサイズの領域(部分)の表示色が白色から緑色に変わり、さらにこの表示領域の中心の手前に操作部73(非表示ボタン)が表示される。また、緑色の表示領域の両側は白色のままで、追加して被加熱物が置けることを示す。
なお、上記表示部5の緑色の表示領域は被加熱物2を表示部5へ投影した領域に対応する。
FIG. 8 is an explanatory diagram showing the relationship between the object to be heated 2 and the display of the display unit 5 on the top plate 3 of the induction heating cooker according to the present invention.
Next, the relationship between the object to be heated 2 and the display on the display unit 5 will be described with reference to FIG.
When cooking, the user first turns on a main power switch (not shown) provided on, for example, the side or the back of the induction heating cooker body 1. Thereby, the upper part of the induction heating cooker is the left-right direction (X-axis direction) along the edge on the near side of the top plate 3 of the induction heating cooker as shown in FIG. 8B from the state of FIG. The white display portion 5 indicating that the object to be heated 2 can be placed over both ends of the top plate is displayed, and at the same time, the control means 74 periodically places the object to be heated 2 on the top plate 3. Whether or not the sensor is placed is monitored using a sensor 76.
When the user places, for example, a pan as the object to be heated 2 on the top 3, an area having the same size as the pan (bottom diameter) of the display unit 5 in front of the pan as shown in FIG. The display color of (part) changes from white to green, and an operation unit 73 (non-display button) is displayed in front of the center of the display area. In addition, both sides of the green display area remain white, indicating that an object to be heated can be additionally placed.
The green display area of the display unit 5 corresponds to the area where the object to be heated 2 is projected onto the display unit 5.

ユーザーが被加熱物を天板上で移動あるいは持ち上げなどにより天板から離した後再び天板上に載置した場合に、被加熱物の占有領域を示す表示部5の表示が元の位置のままであると表示と被加熱物とが対応しなくなり紛らわしい。そこで、ユーザーが鍋を移動すると、鍋の移動に連動して図8(d)に示すように鍋移動前まで表示していた表示部5の上記緑色の領域が白色に戻ると同時に操作部73が消去される。また、移動先の鍋の手前の表示部5の鍋の大きさ(底径)と同じサイズの領域(部分)の表示色が再び白色から緑色に変わると同時にこの表示領域の中心の手前に操作部73が再表示される。
これにより、鍋などの被加熱物を天板上の自由な位置に配置でき、天板上の、被加熱物の占有領域、追加して被加熱物が置ける領域、および追加して置けない領域をユーザーが直感的に理解できる。
When the user moves the object to be heated away from the top board by moving or lifting it, and then placing it again on the top board, the display on the display unit 5 indicating the area occupied by the object to be heated is the original position. If this is the case, the display and the object to be heated will not correspond to each other, which is confusing. Therefore, when the user moves the pan, the green area of the display unit 5 displayed until the pan is moved as shown in FIG. Is erased. In addition, the display color of the area (part) having the same size as the pan size (bottom diameter) of the display unit 5 in front of the destination pan is changed from white to green again, and at the same time, operated to the center of this display area. Part 73 is redisplayed.
As a result, the object to be heated such as a pan can be placed at a free position on the top board, and the area occupied by the object to be heated, the area where the object to be heated can be placed additionally, and the area where it cannot be placed additionally Can be intuitively understood by the user.

図9は、この発明に係る誘導加熱調理器の天板3上での被加熱物2と表示部5の表示との関係、及び操作部73(非表示ボタン)を押した時の表示を示す説明図である。
次に、被加熱物2と表示部5の表示との関係について図9を用いて説明する。
調理を行う場合には、まずユーザーは誘導加熱調理器本体1の例えば横や背面に設けられた図示しない主電源用スイッチを投入する。これにより、誘導加熱調理器の上部は図9(a)の状態から図9(b)に示すように誘導加熱調理器の天板3の手前側の縁に沿って左右方向(X軸方向)に天板の両端に渡って被加熱物2の載置が可能であることを示す白色の表示部5が表示され、同時に制御手段74が周期的に天板3上に被加熱物2が載置されたか否かをセンサー76を用いて監視する。
ユーザーが天板3の上に被加熱物2として例えば鍋を載置すると、図9(c)に示すように鍋の手前の表示部5の鍋の大きさ(底径)と同じサイズの領域(部分)の表示色が白色から緑色に変わり、さらにこの表示領域の中心の手前に操作部73が表示される。そこで、ユーザーがこの操作部73を押すと図9(d)に示すように操作部73が消去し、同時に表示部5の上記緑色の領域が白色に戻る。
これにより、ユーザーは調理しない被加熱物を直感的に見分けることができ、加熱調理する必要のない被加熱物を誤って加熱調理してしまうという誤操作を回避することができる。
FIG. 9 shows the relationship between the object to be heated 2 on the top plate 3 of the induction heating cooker according to the present invention and the display on the display unit 5 and the display when the operation unit 73 (non-display button) is pressed. It is explanatory drawing.
Next, the relationship between the object to be heated 2 and the display on the display unit 5 will be described with reference to FIG.
When cooking, the user first turns on a main power switch (not shown) provided on, for example, the side or the back of the induction heating cooker body 1. Thereby, the upper part of the induction heating cooker is a horizontal direction (X-axis direction) from the state of Fig.9 (a) to the front edge of the top plate 3 of the induction heating cooker as shown in Fig.9 (b). The white display portion 5 indicating that the object to be heated 2 can be placed over both ends of the top plate is displayed, and at the same time, the control means 74 periodically places the object to be heated 2 on the top plate 3. Whether or not the sensor is placed is monitored using a sensor 76.
When the user places, for example, a pan as the object to be heated 2 on the top 3, an area having the same size as the pan (bottom diameter) of the display portion 5 in front of the pan as shown in FIG. The display color of (part) changes from white to green, and the operation unit 73 is displayed in front of the center of the display area. Therefore, when the user presses the operation unit 73, the operation unit 73 is erased as shown in FIG. 9D, and at the same time, the green area of the display unit 5 returns to white.
Thereby, the user can intuitively distinguish the object to be heated that is not cooked, and can avoid an erroneous operation of erroneously cooking the object to be heated that does not need to be cooked.

次に、被加熱物2の配置位置の検知方法と、被加熱物2の配置位置に対応する表示部5の表示方法について、一例を説明する。
ここで使用する複数の被加熱物2の大きさ(底径)はすべて異なることを前提としており、また、被加熱物は略一列に左右方向に並べて配置することを前提としている。また、図示しない記憶手段を制御手段の内部または外部に設けておき、使用するすべての被加熱物2とその大きさを対応させてテーブル化して上記記憶手段に記憶させておき、また被加熱物2の天板3上の配置位置と大きさを記憶するように構成する。
以上の条件の下で上記の機能を実現させるために、電源スイッチが投入されると、制御手段74は起動され、まず、表示部5の全領域に渡って白色の表示を行う。同時に制御手段74は、誘導加熱コイル4の数に対応するセンサー76を用いて周期的に天板3上の被加熱物2の配置位置を監視する。そして、被加熱物2が天板3上に載置されたとき、制御手段74はセンサー76からの検出信号に基づき被加熱物2の現在の配置位置と大きさを推定し、記憶手段の配置位置を更新するとともに、この推定した被加熱物2の大きさと、上記記憶手段に記憶された被加熱物2の大きさを照合することで天板3上の被加熱物2が鍋なのかやかんなのかフライパンなのかあるいはその他の容器なのかを特定する。そして、特定した被加熱物2の推定した現在の配置位置と、特定した被加熱物2の記憶手段に記憶された情報とを比較し、その結果変化がなかったときには制御手段74は被加熱物2が移動しなかったと判断する。また、比較の結果、現在の配置位置と前回の配置位置が異なるとき、即ち配置位置に変化があったとき、制御手段74は調理中に被加熱物2が移動したと判断する。制御手段は、初期時、あるいは比較の結果被加熱物2が移動しなかったと判断すると、載置された被加熱物2の占有領域の真下にあるすべての誘導加熱コイル(小型コイル)4を駆動するとともに表示部5の、被加熱物2の占有領域に対応する領域の表示の状態を被加熱物が載置されていることを示す表示に変え、対応する位置に操作部73を表示してこの操作部73の機能を有効にする。
また、制御手段は、被加熱物2が移動したと判断すると、被加熱物2の移動先の配置位置が十分安定する時間経過後に、移動先の被加熱物2の占有領域の真下にあるすべての誘導加熱コイル(小型コイル)4を駆動するとともに表示部5の、移動先の被加熱物2の占有領域に対応する領域の表示の状態を移動前のそれと同じものに変え、対応する位置に操作部73を表示してこの操作部73の機能を有効にし、さらに前回の被加熱物の載置領域に対応する誘導加熱コイルを停止するとともに表示部5の前回の被加熱物2の占有領域に対応する領域の表示の状態を初期の表示態様に戻し、前回の被加熱物の配置位置に対応する位置の操作部73を消去してその機能を無効にする。
なお、操作部73の機能を有効にすることで、操作部73はユーザーの操作を入力できるようになる。
Next, an example is demonstrated about the detection method of the arrangement position of the to-be-heated object 2, and the display method of the display part 5 corresponding to the arrangement position of the to-be-heated object 2. FIG.
It is assumed that the sizes (bottom diameters) of the plurality of objects to be heated 2 used here are all different, and the objects to be heated are assumed to be arranged side by side in approximately one row. Further, storage means (not shown) is provided inside or outside of the control means, and all the objects to be heated 2 and their sizes are associated with each other in a table and stored in the storage means. The arrangement position and size on the top plate 3 are stored.
When the power switch is turned on in order to realize the above function under the above conditions, the control means 74 is activated, and first displays white over the entire area of the display unit 5. At the same time, the control means 74 periodically monitors the arrangement position of the object to be heated 2 on the top 3 using the sensors 76 corresponding to the number of induction heating coils 4. When the object to be heated 2 is placed on the top plate 3, the control means 74 estimates the current arrangement position and size of the object to be heated 2 based on the detection signal from the sensor 76, and arranges the storage means. Whether the heated object 2 on the top 3 is a pan or not by updating the position and collating the estimated size of the heated object 2 with the size of the heated object 2 stored in the storage means. Identify whether it is a pan, a frying pan, or some other container. Then, the estimated current arrangement position of the identified object to be heated 2 is compared with the information stored in the storage means of the identified object to be heated 2. 2 is determined not to move. As a result of the comparison, when the current arrangement position is different from the previous arrangement position, that is, when the arrangement position is changed, the control means 74 determines that the article to be heated 2 has moved during cooking. When the control means determines that the object 2 to be heated has not moved as a result of comparison or at the initial stage, it drives all induction heating coils (small coils) 4 immediately below the occupied area of the object 2 to be heated. In addition, the display state of the area corresponding to the area occupied by the object to be heated 2 on the display unit 5 is changed to a display indicating that the object to be heated is placed, and the operation unit 73 is displayed at the corresponding position. The function of the operation unit 73 is validated.
Further, when the control means determines that the object to be heated 2 has moved, after the elapse of time when the arrangement position of the destination of the object to be heated 2 is sufficiently stabilized, all of the objects immediately below the occupied area of the object to be heated 2 of the destination The induction heating coil (small coil) 4 is driven and the display state of the display unit 5 corresponding to the occupied area of the object to be heated 2 is changed to the same as that before the movement, and the corresponding position is set. The operation unit 73 is displayed to enable the function of the operation unit 73, and the induction heating coil corresponding to the previous placement area of the object to be heated is stopped and the previous area to be heated 2 of the display part 5 is occupied. The display state of the area corresponding to is returned to the initial display mode, and the operation unit 73 at the position corresponding to the previous arrangement position of the object to be heated is deleted to disable the function.
In addition, by enabling the function of the operation unit 73, the operation unit 73 can input a user operation.

図10は、この発明に係る誘導加熱調理器の実施の形態1の動作を示すフローチャートであり、制御手段の動作を示している。次に、この実施の形態1の動作について図7および図10を用いて説明する。
ユーザーは、誘導加熱調理器を用いて調理を行う場合、まず誘導加熱調理器本体1に設けられた主電源スイッチ(図示せず)を投入する。これにより、誘導加熱調理器の制御手段74は動作を開始し、まず、表示部5に全領域が白色の表示を行い(ステップS1001)、一定の時間遅れを周期として周期的にセンサー76からの検出信号を基に被加熱物2が天板3上に有るか否かを調べ(ステップS1002〜S1004)、無ければステップS1002へ戻り監視を継続し、被加熱物2が天板3上に有ればステップS1005へ進む。ユーザーが食品を収納した被加熱物2を天板3の上に載置すると、制御手段74はセンサー76が検出した信号から天板3上における被加熱物2が占有する領域を特定し、この占有領域から被加熱物2の中心位置と大きさを算出する(ステップS1005)。
FIG. 10 is a flowchart showing the operation of Embodiment 1 of the induction heating cooker according to the present invention, and shows the operation of the control means. Next, the operation of the first embodiment will be described with reference to FIGS.
When cooking using an induction heating cooker, the user first turns on a main power switch (not shown) provided in the induction heating cooker body 1. Thereby, the control means 74 of the induction heating cooker starts the operation, and first, the entire area is displayed on the display unit 5 (step S1001), and periodically from the sensor 76 with a certain time delay as a period. Based on the detection signal, it is checked whether or not the object to be heated 2 is on the top plate 3 (steps S1002 to S1004). If not, the process returns to step S1002 to continue monitoring. If so, the process proceeds to step S1005. When the user places the object to be heated 2 containing food on the top board 3, the control means 74 specifies the area occupied by the object to be heated 2 on the top board 3 from the signal detected by the sensor 76. The center position and size of the object to be heated 2 are calculated from the occupied area (step S1005).

次に、制御手段74は表示部5の、被加熱物2の占有領域に対応する領域の表示色を緑色に変える(ステップS1006)。次に、制御手段74は被加熱物2同士の間隔または天板3の端部に最も近い被加熱物2と天板3の端部との間の距離を算出し(ステップS1007)、これらとまだ載置されていない全ての被加熱物2の大きさとを比較して、上記間隔にいずれかの被加熱物が入るか否かを調べる(ステップS1008)。上記間隔にいずれの被加熱物も入らない場合には、その旨をユーザーに伝えるために、表示部5の上記間隔に対応する領域を点滅させて(ステップS1009)、ステップS1010へ進む。上記間隔にいずれかの被加熱物が入る場合には、そのままステップS1010へ進む。ステップS1010では、後述の操作部73(非表示ボタン)が操作済みか否かを調べる。最初はNoだから次のステップS1011へ進む。   Next, the control means 74 changes the display color of the area | region corresponding to the occupation area of the to-be-heated material 2 of the display part 5 to green (step S1006). Next, the control means 74 calculates the distance between the objects to be heated 2 or the distance between the object to be heated 2 and the end of the top 3 that is closest to the end of the top 3 (step S1007). It compares with the size of all the to-be-heated objects 2 which are not yet mounted, and it is investigated whether any to-be-heated object enters in the said space | interval (step S1008). If no object to be heated enters the interval, the region corresponding to the interval on the display unit 5 is blinked in order to inform the user to that effect (step S1009), and the process proceeds to step S1010. If any object to be heated enters the interval, the process proceeds to step S1010. In step S1010, it is checked whether an operation unit 73 (non-display button) described later has been operated. Since it is No at first, the process proceeds to the next step S1011.

次に、制御手段74は予め記憶手段に記憶させておいた操作部73の画像をタッチパネル78上の、被加熱物2の中心位置付近に表示するとともに、この操作部73の機能を有効にさせ、ユーザーからの操作入力を受け付ける状態にする(ステップS1011)。次に、制御手段74は他に天板3上に他の被加熱物2が有るか否かを調べ、有れば、ステップS1005へ戻り、再び見つかった被加熱物2についてその中心位置と大きさの算出から操作部73の表示までの動作を、鍋が見つからなくなるまで繰り返す(S1005〜S1012)。そして、これ以上見つからなくなれば(ステップS1012の無)、ユーザーがこの操作部73を操作するか否か調べる。なお、このときの操作部73の表示形態は図8(c)または図9(c)に示す通りである。ここで、ユーザーが表示不要と判断した場合、被加熱物2の加熱調理を行う必要がない場合や加熱調理を行いたくない場合、ユーザー自身の意志で操作部73を押す。これにより操作部73の座標が制御手段74に送られ、制御手段74はこの操作部73の座標を受信すると、操作部73の画像を消去させその機能を無効にするとともに、対応する誘導加熱コイルを停止し、表示部5の対応領域の表示を初期状態に戻し(ステップS1014)、ステップS1002へ戻る。   Next, the control unit 74 displays the image of the operation unit 73 stored in advance in the storage unit on the touch panel 78 in the vicinity of the center position of the object to be heated 2 and makes the function of the operation unit 73 effective. Then, the operation input from the user is accepted (step S1011). Next, the control means 74 checks whether or not there is another object to be heated 2 on the top plate 3, and if so, the process returns to step S1005, and the center position and the size of the object to be heated 2 found again are detected. The operations from the calculation of the height to the display of the operation unit 73 are repeated until no pan is found (S1005 to S1012). If no more items are found (No in step S1012), it is checked whether or not the user operates the operation unit 73. The display form of the operation unit 73 at this time is as shown in FIG. 8 (c) or FIG. 9 (c). Here, when the user determines that the display is unnecessary, when the user does not need to cook the object to be heated 2 or does not want to perform the cooking, the user presses the operation unit 73 at his / her own will. As a result, the coordinates of the operation unit 73 are sent to the control unit 74. When the control unit 74 receives the coordinates of the operation unit 73, the image of the operation unit 73 is erased and the function is invalidated. Is stopped, the display of the corresponding area of the display unit 5 is returned to the initial state (step S1014), and the process returns to step S1002.

ユーザーが操作部73を押さない場合には、制御手段74は前回の被加熱物2の中心位置が移動されたか否かを監視する。すなわち、制御手段74は前回の全ての被加熱物2の中心位置と大きさを記憶手段から取得して、今回推定した被加熱物2の大きさと照合する。照合の結果、同じものが抽出できれば、この被加熱物の前回の中心位置と今回推定された中心位置とを比較して変化があるか否かを判定する(ステップS1015〜S1016)。比較の結果、同じであれば、移動はなかったと判定してステップS1002へ戻り、引き続き監視を継続する。比較の結果、測位に変化が有れば、移動したと判断して、前回の表示部5の表示を元に戻し(ステップS1017)、前回の操作部73を消去するとともにその機能を無効にし(ステップS1018)、前回に対応する誘導加熱コイル4を停止してステップS1005へ戻り移動先の被加熱物の中心位置と大きさ算出、表示部5の表示、操作部73の表示などを再開する。   When the user does not press the operation unit 73, the control unit 74 monitors whether or not the previous center position of the article to be heated 2 has been moved. That is, the control means 74 acquires the previous center positions and sizes of all the heated objects 2 from the storage means, and collates them with the sizes of the heated objects 2 estimated this time. If the same thing can be extracted as a result of the collation, the previous center position of the object to be heated and the center position estimated this time are compared to determine whether or not there is a change (steps S1015 to S1016). If they are the same as a result of the comparison, it is determined that there is no movement, and the process returns to step S1002 to continue monitoring. As a result of the comparison, if there is a change in positioning, it is determined that it has moved, the display of the previous display unit 5 is restored (step S1017), the previous operation unit 73 is erased, and the function is disabled ( In step S1018), the induction heating coil 4 corresponding to the previous time is stopped, the process returns to step S1005, and the calculation of the center position and size of the object to be moved, display on the display unit 5, display on the operation unit 73, and the like are resumed.

なお、被加熱物2の加熱温度に応じて表示部5の表示の色を変化させれば(例えばオレンジ色から赤色に変化させれば)、ユーザーは加熱状態を一目で直感的に理解できるため、より使い勝手の良い加熱調理器が得られる。   Note that if the display color of the display unit 5 is changed according to the heating temperature of the article to be heated 2 (for example, if the color is changed from orange to red), the user can intuitively understand the heating state at a glance. A more convenient cooking device can be obtained.

なお、図示しないが、制御手段74に記憶手段を設け、制御手段74は、センサー76の出力に基づき、被加熱物2が天板3から離れたと判断すると、誘導加熱コイル4の駆動を停止するとともに、そのときの火力状態を記憶し、所定時間以内に被加熱物2が離れる前の天板3上に配置されたときには、再度記憶手段に記憶された火力状態で被加熱物2が配置された領域に対応する誘導加熱コイル4を駆動し、対応する操作部73を有効にする。
また、制御手段74は、センサー76の出力に基づき、被加熱物2が天板3から離れたと判断した後、所定時間以内に前記被加熱物2が天板3上に再び配置されないときには、表示部5の被加熱物の占有領域位置に対応する領域の表示を被加熱物2が載置される前の表示状態に戻すとともに操作部73を消去してその機能を無効とする。これにより、不要な表示を消去できる。
Although not shown, the control means 74 is provided with storage means, and the control means 74 stops driving the induction heating coil 4 when it is determined that the heated object 2 is separated from the top plate 3 based on the output of the sensor 76. At the same time, the thermal power state at that time is stored, and when the object to be heated 2 is arranged on the top plate 3 before leaving within a predetermined time, the object to be heated 2 is arranged again in the thermal power state stored in the storage means. The induction heating coil 4 corresponding to the selected area is driven to activate the corresponding operation unit 73.
Further, the control means 74 displays a display when the object to be heated 2 is not placed on the top plate 3 again within a predetermined time after determining that the object to be heated 2 is separated from the top plate 3 based on the output of the sensor 76. The display of the area corresponding to the position of the area to be heated in the unit 5 is returned to the display state before the object to be heated 2 is placed, and the operation unit 73 is erased to disable the function. Thereby, an unnecessary display can be erased.

図11は、被加熱物2の占有領域の中心位置と大きさを算出するときの動作の流れの一例を示す詳細フローチャートである。
次に、被加熱物2の配置位置の特定と大きさを算出するときの動作について図7および図11を用いて説明する。
以下の説明において、天板3の左右方向をX軸方向とし、前後方向をY軸方向とする。
また、被加熱物2の底の形状は、円形または楕円形のいずれかであることを前提とする。
また、被加熱物2をX軸方向では複数台並べて置くことができるが、Y軸方向では1台しか置けないことを前提とする。また、被加熱物2はX軸方向で天板3からわずかにはみ出て配置されることは許可することとする。また、楕円形の鍋は天板3上で斜めに置かないことを前提とする。
また、表示部5は図16(a)のように天板3の手前側の周囲に天板3の縁に沿って設けられているものとする。
FIG. 11 is a detailed flowchart showing an example of the flow of operations when calculating the center position and size of the occupation area of the article 2 to be heated.
Next, the operation for calculating the location and size of the object to be heated 2 will be described with reference to FIGS.
In the following description, the left-right direction of the top plate 3 is the X-axis direction, and the front-rear direction is the Y-axis direction.
Further, it is assumed that the shape of the bottom of the article to be heated 2 is either circular or elliptical.
Further, it is assumed that a plurality of objects to be heated 2 can be placed side by side in the X-axis direction, but only one can be placed in the Y-axis direction. In addition, the object to be heated 2 is allowed to be disposed slightly beyond the top plate 3 in the X-axis direction. It is assumed that the oval pan is not placed diagonally on the top 3.
Further, the display unit 5 is provided along the edge of the top plate 3 around the front side of the top plate 3 as shown in FIG.

以下、動作を説明する。
制御手段74は、センサー76から取得した情報に基づき、被加熱物2の天板3上の占有領域のY軸方向の最大位置と最小位置を特定する(ステップS1101)。次に、制御手段74は、最大位置と最小位置の平均値をとることで非加熱物2のY軸方向の中心位置を算出し、この中心位置を通るX軸の中心位置に決定する(ステップS1102)。次に、制御手段74は、センサー76から取得した情報に基づき、被加熱物2の天板3上の占有領域のX軸方向の最大位置と最小位置を特定する(ステップS1103)。次に、制御手段74は、X軸方向の最大位置と中心位置との距離X1および、X軸方向の最小位置と中心位置との距離X2を計算し、X1とX2を比較する(ステップS1104)。X1とX2が等しければ被加熱物2は天板3内にあると判定し、X1を2倍した値が被加熱物2のX軸方向の大きさであると推定する。また、制御手段74は、X1がX2より大きければ、被加熱物2は天板3からわずかに左へはみ出していると判定し、X1を2倍した値が被加熱物2のX軸方向の大きさであると推定する。また、制御手段74は、X2がX1より大きければ、被加熱物2は天板3からわずかに右へはみ出していると判定し、X2を2倍した値が被加熱物2のX軸方向の大きさであると推定する(ステップS1105)。
The operation will be described below.
Based on the information acquired from the sensor 76, the control means 74 specifies the maximum position and the minimum position in the Y-axis direction of the occupied area on the top plate 3 of the object to be heated 2 (step S1101). Next, the control means 74 calculates the center position of the non-heated object 2 in the Y-axis direction by taking the average value of the maximum position and the minimum position, and determines the center position of the X axis passing through this center position (step). S1102). Next, the control means 74 specifies the maximum position and the minimum position in the X-axis direction of the occupied area on the top plate 3 of the object to be heated 2 based on the information acquired from the sensor 76 (step S1103). Next, the control means 74 calculates the distance X1 between the maximum position in the X-axis direction and the center position and the distance X2 between the minimum position in the X-axis direction and the center position, and compares X1 and X2 (step S1104). . If X1 and X2 are equal, it is determined that the object to be heated 2 is in the top plate 3, and a value obtained by doubling X1 is estimated to be the size of the object to be heated 2 in the X-axis direction. Further, if X1 is larger than X2, the control means 74 determines that the object to be heated 2 protrudes slightly to the left from the top plate 3, and a value obtained by doubling X1 in the X-axis direction of the object to be heated 2 Estimated size. Further, if X2 is larger than X1, the control means 74 determines that the object to be heated 2 protrudes slightly to the right from the top plate 3, and a value obtained by doubling X2 in the X-axis direction of the object to be heated 2 The size is estimated (step S1105).

なお、被加熱物2の占有領域の中心位置と大きさの算出方法は、上記の方法に限られない。   In addition, the calculation method of the center position and magnitude | size of the occupation area | region of the to-be-heated material 2 is not restricted to said method.

この実施の形態1によれば、天板上の、被加熱物の占有領域、追加して被加熱物が置ける領域、および追加して置けない領域を表示するので、ユーザーは被加熱物が天板上のどこに置けるのかを一目で直感的に理解できる。また、加熱温度に対応して表示部の色を変化させるようにすれば、調理状態を直感的に把握でき、より使い勝手が良くなる。また、天板3上の被加熱物2を使用しない場合にはユーザーが非表示ボタンを押下することにより操作部73自体を消去できるので、誤動作を防止することができ、安全性を高めることができる。また、調理中に被加熱物2が移動しても、移動先に表示部5が表示されるため、移動後の被加熱物の占有領域、追加して被加熱物が置ける領域、および追加して置けない領域をユーザーが直感的に理解できる。さらに、移動先で加熱効率を自動的に維持するようにすれば、操作上の利便性を損なうことなく継続して快適な調理が可能になる。   According to the first embodiment, the area occupied by the object to be heated, the area where the object to be heated can be additionally placed, and the area where the object to be heated cannot be additionally placed are displayed on the top board. You can intuitively understand where you can place it on the board. Further, if the color of the display unit is changed in accordance with the heating temperature, the cooking state can be intuitively grasped and the usability is improved. In addition, when the object to be heated 2 on the top plate 3 is not used, the operation unit 73 itself can be erased by pressing the non-display button by the user, so that malfunction can be prevented and safety can be improved. it can. Even if the object to be heated 2 moves during cooking, the display unit 5 is displayed at the destination, so that the area occupied by the object to be heated after the movement, the area where the object to be heated can be placed, and the additional Users can intuitively understand areas that cannot be placed. Furthermore, if the heating efficiency is automatically maintained at the destination, comfortable cooking can be continuously performed without impairing operational convenience.

なお、この実施の形態では、使用する複数の被加熱物2の大きさはすべて異なることを前提としたが、これに限ることはなく、同じ大きさの被加熱物が複数ある場合でもその個数を記憶手段に記憶させておけば、制御手段は天板3上の空き領域に追加してどのような大きさの被加熱物2を置くことができるか判断することが可能である。   In this embodiment, it is assumed that the sizes of the plurality of heated objects 2 to be used are all different. However, the present invention is not limited to this, and even when there are a plurality of heated objects of the same size, the number of the heated objects is not limited to this. Is stored in the storage means, the control means can determine what size of the object to be heated 2 can be placed in addition to the empty area on the top 3.

実施の形態2.
実施の形態1においては、追加して被加熱物が置ける領域があるかどうかの判断を予め記憶されている被加熱物の大きさと鍋間の距離との比較で行ったが(図10のS1008)、所定の距離(例えば15cm)との比較で行うようにしても良い。すなわち、被加熱物同士の間隔、或いは天板3の端部に最も近い被加熱物2と天板3の端部との間隔が15cm以上あれば、他の被加熱物2が置けると判断して、表示部5の色を載置可能であることを示す白色にする。一方、15cm未満である場合には、他の被加熱物2は置けないと判断して、表示部5の色を載置不可能であることを示す緑色にする。
また、誘導加熱調理器の許容最大電力量(例えば6キロワット)に応じて記憶手段に被加熱物の載置可能最大数(例えば4個)を記憶させておき、制御手段74が、センサー76の出力に基づいて天板3に被加熱物2が載置される都度その数をカウントし、カウント値が前記載置可能最大数に達したら、これ以上載置できない旨をユーザーに伝えるために表示部5の表示を載置不可能を示す色に変えるようにしてもよい。さらに、許容される電力量の範囲内であるかどうかを判断するために、被加熱物の数に代えて、駆動されている加熱コイル4の数、或いは使用されている電力量を検知し、所定の閾値と比較するようにしても良い。この場合、電力量が閾値以下であれば、他の被加熱物を載置可能であると判断し、閾値を上回ったら載置不可能であると判断する。
また、被加熱物同士の間隔、或いは天板3の端部に最も近い被加熱物2と天板3の端部との間隔が所定距離以上である場合に、更に被加熱物の数を所定個数と比較して、追加して載置可能な個数であれば載置可能と判断し、追加できない個数であれば載置不可能と判断するようにしても良い。更に、電力量による判断を組み合わせても良い。
Embodiment 2. FIG.
In the first embodiment, whether or not there is a region where the heated object can be additionally placed is determined by comparing the size of the heated object stored in advance with the distance between the pans (S1008 in FIG. 10). ), Or a comparison with a predetermined distance (for example, 15 cm). That is, if the distance between the heated objects or the distance between the heated object 2 closest to the end of the top plate 3 and the end of the top 3 is 15 cm or more, it is determined that another heated object 2 can be placed. Thus, the color of the display unit 5 is set to white indicating that it can be placed. On the other hand, if the distance is less than 15 cm, it is determined that another object to be heated 2 cannot be placed, and the color of the display unit 5 is changed to green indicating that the placement is impossible.
Further, the maximum number (for example, four) of the object to be heated can be stored in the storage unit according to the allowable maximum power amount (for example, 6 kilowatts) of the induction heating cooker, and the control unit 74 can control the sensor 76. Each time the heated object 2 is placed on the top 3 based on the output, the number is counted, and when the count value reaches the maximum number that can be placed as described above, a message is displayed to inform the user that no further placement is possible. You may make it change the display of the part 5 to the color which shows that mounting is impossible. Further, in order to determine whether or not the power amount is within the allowable range, the number of heating coils 4 that are driven or the amount of power that is used is detected instead of the number of objects to be heated. You may make it compare with a threshold value. In this case, if the electric energy is equal to or less than the threshold, it is determined that another object to be heated can be placed, and if the amount exceeds the threshold, it is determined that the placement is impossible.
Further, when the distance between the heated objects or the distance between the heated object 2 closest to the end of the top plate 3 and the end of the top plate 3 is equal to or greater than a predetermined distance, the number of heated objects is further set to a predetermined number. In comparison, if the number can be additionally placed, it may be determined that placement is possible, and if the number cannot be added, it may be judged that placement is impossible. Furthermore, determination based on the amount of power may be combined.

実施の形態3.
実施の形態1においては、表示部5を天板3の手前側または奥側に帯状に設けた例(図15(a)参照)を示したが、これに限らず、加熱調理器本体の上面の周縁や前面のユーザーが見やすい部分に適宜設けることができる。例えば、本体上面の左右端に手前から奥に向けて設けるようにしても良い。これにより、天板3の奥側に被加熱物を置けるかどうかの判断が可能になり、自由な位置に被加熱物を配置できる加熱調理器の操作性をより向上させることができる。
また、本体の周縁に限らず、天板3の上面の適当な部分に帯状の表示部を設けても良い。例えば天板3の真ん中に左右方向に帯状の表示部を設ければ、奥行き方向に2列に被加熱物を載置可能な場合にわかり易い表示が可能である。
また、表示の方法も、ライン状の表示に限らず、図15(b)に示すように天板3の下方の加熱コイルの隙間に配置した複数の光源10により面状に表示しても良い。この場合、他の被加熱物を置ける領域がより直感的にわかり易くなる。
また、図15(c)、図15(d)に示すように本体の側方や上方に複数の光源10、或いは照射方向を変えられる光源10を設け、この光源10を用いて天板3を照らすことにより載置可能な領域を面状に表示すること等も可能である。この場合も、他の被加熱物を置ける領域がより直感的にわかり易くなるとともに、本体内部に光源10等の部品を設ける必要がなくなる。更に、プロジェクターを用いて天板3に表示するようにしても良い。
Embodiment 3 FIG.
In Embodiment 1, although the example (refer FIG. 15A) which provided the display part 5 in the strip | belt shape in the near side or the back | inner side of the top plate 3 was shown, it is not restricted to this, The upper surface of a heating cooker main body It is possible to appropriately provide it on the periphery or the front part of the front where the user can easily see. For example, it may be provided on the left and right ends of the upper surface of the main body from the front to the back. Thereby, it becomes possible to determine whether or not the object to be heated can be placed on the back side of the top plate 3, and the operability of the heating cooker that can arrange the object to be heated at a free position can be further improved.
Moreover, you may provide a strip | belt-shaped display part in the suitable part of the upper surface of the top plate 3 not only in the periphery of a main body. For example, if a strip-shaped display unit is provided in the middle of the top plate 3 in the left-right direction, an easy-to-understand display is possible when objects to be heated can be placed in two rows in the depth direction.
Further, the display method is not limited to the line display, and may be displayed in a planar form by a plurality of light sources 10 arranged in the gaps of the heating coils below the top plate 3 as shown in FIG. . In this case, the region where other objects to be heated can be placed becomes easier to understand intuitively.
Further, as shown in FIGS. 15C and 15D, a plurality of light sources 10 or a light source 10 whose irradiation direction can be changed is provided on the side or upper side of the main body, and the top plate 3 is attached using the light sources 10. It is also possible to display the area where the image can be placed by illuminating it in a planar shape. Also in this case, the region where other objects to be heated can be placed becomes easier to understand intuitively, and there is no need to provide components such as the light source 10 inside the main body. Further, it may be displayed on the top 3 using a projector.

実施の形態4.
実施の形態1では、誘導加熱コイル4の数に対応する数の温度検出器や容量検出器などのセンサー76を誘導加熱コイル4の中心または誘導加熱コイル4間に配置して被加熱物2の配置位置を直接検出する場合について説明した。しかし、上記のセンサー76の代わりに電流検出器121を用いて被加熱物2の配置位置を検出することも可能である。この実施の形態4では、このような態様の一例について説明する。
図1〜図6、図8〜図9および図11はこの実施の形態4でも用いられる。
図12は、この発明に係る誘導加熱調理器の実施の形態4における回路構成を示すブロック図である。図11において図7と同符号は、同一または相当部分を示す。以下、異なる構成について説明する。電流検出器121は共振コンデンサ75とインバータ72との間を流れる高周波電流を検出するセンサーであり、例えばACCT(ACカレントトランス)によって構成される。また、コンバータ71を流れる直流電流を検出しても良く、この場合には例えば抵抗で直流電流器を構成し、この抵抗の両端に発生する電圧に基づいて電流を換算しても良く、あるいは直接DCCT(DCカレントトランス)などによって直流電流器を構成しても良い。
Embodiment 4 FIG.
In the first embodiment, a number of sensors 76 such as temperature detectors and capacity detectors corresponding to the number of induction heating coils 4 are arranged in the center of the induction heating coil 4 or between the induction heating coils 4 to adjust the heating object 2. The case where the arrangement position is directly detected has been described. However, it is also possible to detect the arrangement position of the object to be heated 2 using the current detector 121 instead of the sensor 76 described above. In the fourth embodiment, an example of such a mode will be described.
1 to 6, 8 to 9, and 11 are also used in the fourth embodiment.
FIG. 12 is a block diagram showing a circuit configuration in the fourth embodiment of the induction heating cooker according to the present invention. 11, the same reference numerals as those in FIG. 7 denote the same or corresponding parts. Hereinafter, different configurations will be described. The current detector 121 is a sensor that detects a high-frequency current flowing between the resonant capacitor 75 and the inverter 72, and is configured by, for example, an ACCT (AC current transformer). Further, the direct current flowing through the converter 71 may be detected. In this case, for example, a direct current device may be configured by a resistor, and the current may be converted based on the voltage generated at both ends of the resistor, or directly. The direct current device may be constituted by DCCT (DC current transformer) or the like.

次に、実施の形態4の動作について概説する。
図8〜図9の動作については、実施の形態1で説明したので説明を省略する。
実施の形態4の動作説明の事前準備として、電流検出の場合の動作を説明する。誘導加熱調理器の制御手段74は動作を開始すると、センサーによる検出だけでなく、システム導入時に設定した時間を周期として周期的に誘導加熱コイル4に順次高周波電流を供給して電流検出器121からの検出信号を調べ、被加熱物2が載置されている場合にはその真下にある誘導加熱コイル4との磁気結合が大きくなるため、この誘導加熱コイル4には電流が流れ、被加熱物2が載置されていない位置では、その真下にある誘導加熱コイル4と被加熱物2との磁気結合が小さくなるため、この誘導加熱コイル4には電流が流れない。従って、すべての誘導加熱コイル4を順次駆動しながらインバータ72の共通ラインに挿入されている電流検出器121が検出した電流を予め設定した基準値と比較し、電流検出器121が検出した電流が基準値を上回れば真上に被加熱物2が有ると判断し、なければ、真上に被加熱物2が無いと判断する。この場合、各誘導加熱コイル4毎に1回だけの電流検出ではノイズによって誤検出のおそれがあるので、数回の電流検出を行い、ずれの大きいデータを除いた上で平均をとる。そして、得られた平均値を基準値と比較する。以上の動作を天板3の下方に均一的に分散配置された全ての誘導加熱コイル4について順次行なえば、被加熱物2が天板3上の占有領域(範囲)を容易に判断することができる。
しかしながら、誘導加熱コイル4の数が多いほど順次駆動にかかる時間が長くなる。調理中も被加熱物2の移動があるか否かを監視するために、周期的に上記順次駆動を行うと、誘導加熱コイル4を本来の調理に割く時間よりも監視に割く時間の方が長くなる場合もあり、快適な調理ができなくなるだけでなく、調理に多大な支障を招く虞がある。
そこで、この実施の形態4では、誘導加熱コイル4の数よりも少ない数(例えば、誘導加熱コイル4の数の半分)のセンサー76を分散配置して、このセンサー76を用いて被加熱物2の有無やその占有領域の範囲を大雑把に(粗く)検出し、被加熱物2の占有領域が粗く検出できたら、検出された占有領域と取りこぼしを防ぐためにマージンとして周囲の領域も含めてこれらの領域に対応する誘導加熱コイル4に検査用電流を流し、その時の電流検出器121を用いて被加熱物2の占有領域を高精度に検出するように構成する。
Next, the operation of the fourth embodiment will be outlined.
Since the operations in FIGS. 8 to 9 have been described in the first embodiment, description thereof will be omitted.
As a preparation for explaining the operation of the fourth embodiment, the operation in the case of current detection will be described. When the control means 74 of the induction heating cooker starts operation, not only the detection by the sensor but also the high frequency current is sequentially supplied to the induction heating coil 4 periodically with the time set at the time of system introduction as a cycle from the current detector 121. When the object to be heated 2 is placed, the magnetic coupling with the induction heating coil 4 directly below it increases, so that a current flows through the induction heating coil 4 and the object to be heated is At the position where 2 is not placed, the magnetic coupling between the induction heating coil 4 and the object to be heated 2 immediately below it becomes small, so that no current flows through the induction heating coil 4. Therefore, the current detected by the current detector 121 inserted in the common line of the inverter 72 is compared with a preset reference value while sequentially driving all the induction heating coils 4, and the current detected by the current detector 121 is If it exceeds the reference value, it is determined that the object to be heated 2 is present directly above, and if not, it is determined that there is no object to be heated 2 immediately above. In this case, current detection only once for each induction heating coil 4 may cause erroneous detection due to noise. Therefore, current detection is performed several times, and an average is obtained after removing data with a large deviation. Then, the obtained average value is compared with a reference value. If the above operation is sequentially performed for all induction heating coils 4 that are uniformly distributed below the top plate 3, the heated object 2 can easily determine the occupied area (range) on the top plate 3. it can.
However, as the number of induction heating coils 4 increases, the time required for sequential driving increases. When the sequential driving is periodically performed in order to monitor whether or not the object to be heated 2 is moving during cooking, the time spent for monitoring the induction heating coil 4 is less than the time spent for original cooking. In some cases, the length becomes longer, which not only makes it impossible to cook comfortably, but also may cause great trouble in cooking.
Therefore, in the fourth embodiment, a smaller number of sensors 76 (for example, half the number of induction heating coils 4) than the number of induction heating coils 4 are dispersedly arranged, and the object 2 to be heated is used by using the sensors 76. If the presence / absence of the object and the range of the occupied area are roughly (coarsely) detected, and the occupied area of the object to be heated 2 can be detected roughly, these areas including the surrounding area as a margin to prevent the detected occupied area from being overlooked An inspection current is passed through the induction heating coil 4 corresponding to the region, and the current detector 121 is used to detect the occupied region of the article to be heated 2 with high accuracy.

以上の動作原理の下で、以下、制御手段74の動作を説明する。
なお、上記の機能を実現するために、この実施の形態においては、使用する複数の被加熱物2の大きさ(底径)はすべて異なることを前提とし、また、被加熱物は略一列に左右方向に並べて配置することを前提として説明する。また、図示しない記憶手段を制御手段の内部または外部に設けておき、使用するすべての被加熱物2とその大きさを対応させてテーブル化して上記記憶手段に記憶させておき、また被加熱物2の天板3上の配置位置と大きさを記憶するように構成する。
電源スイッチが投入されると、制御手段74は起動され、まず、表示部5の全領域に渡って白色の表示を行う。同時に制御手段74は、誘導加熱コイル4の数より少ないセンサー76を用いて周期的に天板3上の被加熱物2の配置位置を監視する。そして、被加熱物2が天板3上に載置されたとき、制御手段74はセンサー76からの検出信号に基づき被加熱物2の現在の占有領域を大雑把に推定し、この推定した被加熱物2の占有領域とその周辺の領域に対して、誘導加熱コイルを駆動してより高い精度で上記被加熱物2の現在の配置位置と大きさを推定する。そして、制御手段は、この推定した被加熱物2の大きさと、上記記憶手段に記憶された被加熱物2の大きさを照合することで天板3上の被加熱物2が鍋なのかやかんなのかフライパンなのかあるいはその他の容器なのかを特定する。そして、特定した被加熱物2の推定した現在の配置位置と、特定した被加熱物2の記憶手段に記憶された情報とを比較し、その結果変化がなかったときには制御手段74は被加熱物2が移動しなかったと判断する。また、比較の結果、現在の配置位置と前回の配置位置が異なるとき、即ち配置位置に変化があったとき、制御手段74は調理中に被加熱物2が移動したと判断する。制御手段は、初期時、あるいは比較の結果被加熱物2が移動しなかったと判断すると、載置された被加熱物2の占有領域の真下にあるすべての誘導加熱コイル(小型コイル)4を駆動するとともに表示部5の、被加熱物2の占有領域に対応する領域の表示の状態を変え、対応する位置に操作部73を表示してこの操作部73の機能を有効にする。
また、制御手段は、被加熱物2が移動したと判断すると、被加熱物2の移動先の配置位置が十分安定する時間経過後に、移動先の被加熱物2の占有領域の真下にあるすべての誘導加熱コイル(小型コイル)4を駆動するとともに表示部5の、移動先の被加熱物2の占有領域に対応する領域の表示の状態を移動前のそれと同じものに変え、対応する位置に操作部73を表示してこの操作部73の機能を有効にし、さらに前回の被加熱物の載置領域に対応する誘導加熱コイルを停止するとともに表示部5の前回の被加熱物2の占有領域に対応する領域の表示の状態を初期の表示態様に戻し、前回の被加熱物の配置位置に対応する位置の操作部73を消去してその機能を無効にする。
なお、操作部73の機能を有効にすることで、操作部73はユーザーの操作を入力できるようになる。
Under the above operation principle, the operation of the control means 74 will be described below.
In order to realize the above functions, in this embodiment, it is assumed that the sizes (bottom diameters) of the plurality of objects to be heated 2 to be used are all different, and the objects to be heated are substantially in a line. The description will be made on the assumption that they are arranged side by side in the left-right direction. Further, storage means (not shown) is provided inside or outside of the control means, and all the objects to be heated 2 and their sizes are associated with each other in a table and stored in the storage means. The arrangement position and size on the top plate 3 are stored.
When the power switch is turned on, the control means 74 is activated, and first displays white over the entire area of the display unit 5. At the same time, the control means 74 periodically monitors the arrangement position of the object to be heated 2 on the top 3 using the sensors 76 that are smaller than the number of the induction heating coils 4. When the object to be heated 2 is placed on the top 3, the control means 74 roughly estimates the current occupied area of the object to be heated 2 based on the detection signal from the sensor 76, and this estimated object to be heated The induction heating coil is driven with respect to the area occupied by the object 2 and its surrounding area, and the current arrangement position and size of the object to be heated 2 are estimated with higher accuracy. Then, the control means collates the estimated size of the heated object 2 with the size of the heated object 2 stored in the storage means, so that the heated object 2 on the top 3 is a pan. Identify whether it is a pan, a frying pan, or some other container. Then, the estimated current arrangement position of the identified object to be heated 2 is compared with the information stored in the storage means of the identified object to be heated 2. 2 is determined not to move. As a result of the comparison, when the current arrangement position is different from the previous arrangement position, that is, when the arrangement position is changed, the control means 74 determines that the article to be heated 2 has moved during cooking. When the control means determines that the object 2 to be heated has not moved as a result of comparison or at the initial stage, it drives all induction heating coils (small coils) 4 immediately below the occupied area of the object 2 to be heated. At the same time, the display state of the area corresponding to the area occupied by the object to be heated 2 on the display unit 5 is changed, and the operation unit 73 is displayed at the corresponding position to enable the function of the operation unit 73.
Further, when the control means determines that the object to be heated 2 has moved, after the elapse of time when the arrangement position of the destination of the object to be heated 2 is sufficiently stabilized, all of the objects immediately below the occupied area of the object to be heated 2 of the destination The induction heating coil (small coil) 4 is driven and the display state of the display unit 5 corresponding to the occupied area of the object to be heated 2 is changed to the same as that before the movement, and the corresponding position is set. The operation unit 73 is displayed to enable the function of the operation unit 73, and the induction heating coil corresponding to the previous placement area of the object to be heated is stopped and the previous area to be heated 2 of the display part 5 is occupied. The display state of the area corresponding to is returned to the initial display mode, and the operation unit 73 at the position corresponding to the previous arrangement position of the object to be heated is deleted to disable the function.
In addition, by enabling the function of the operation unit 73, the operation unit 73 can input a user operation.

図13〜図14は、この発明に係る誘導加熱調理器の実施の形態4の動作を示すフローチャートであり、制御手段の動作を示している。次に、この実施の形態4の動作について図12〜図14を用いて説明する。
ユーザーは、誘導加熱調理器を用いて調理を行う場合、まず誘導加熱調理器本体1に設けられた主電源スイッチ(図示せず)を投入する。これにより、誘導加熱調理器の制御手段74は動作を開始し、まず、表示部5に全領域が白色の表示を行い(ステップS1301)、一定の時間遅れを周期として周期的にセンサー76からの検出信号を基に被加熱物2が天板3上に有るか否かを大雑把に調べ(ステップS1302〜S1304)、無ければステップS1302へ戻り監視を継続し、被加熱物2が天板3上に有ればステップS1305へ進む。ユーザーが食品を収納した被加熱物2を天板3の上に載置すると、制御手段74はセンサー76が検出した信号から天板3上における被加熱物2が占有する領域を大雑把に特定する。次に、制御手段74は、センサー76によって粗く特定された被加熱物2の占有領域と精度を高くするためにマージンとして周囲の領域も含めてこれらの領域に対応する誘導加熱コイル4に検査用電流を流し、その時の電流検出器121を用いて被加熱物2の占有領域を高精度に検出するように構成する。特定された占有領域内のすべての誘導加熱コイル4に順次検査用電流を流しながら電流検出器121が検出した電流を基準値と比較する。そして基準値以上の電流が検出された誘導加熱コイル4の配置位置に基づいて被加熱物2の天板3上の占有領域を高精度に特定し、この占有領域の中心位置と大きさを算出する(ステップS1305〜S1307)。
FIGS. 13-14 is a flowchart which shows operation | movement of Embodiment 4 of the induction heating cooking appliance concerning this invention, and has shown operation | movement of the control means. Next, the operation of the fourth embodiment will be described with reference to FIGS.
When cooking using an induction heating cooker, the user first turns on a main power switch (not shown) provided in the induction heating cooker body 1. Thereby, the control means 74 of the induction heating cooker starts the operation, and first, the entire area is displayed on the display unit 5 (step S1301), and periodically from the sensor 76 with a certain time delay as a period. Based on the detection signal, it is roughly checked whether or not the object to be heated 2 is on the top plate 3 (steps S1302 to S1304). If there is no object, the process returns to step S1302 to continue monitoring. If yes, the process proceeds to step S1305. When the user places the object to be heated 2 containing food on the top board 3, the control means 74 roughly specifies the area occupied by the object to be heated 2 on the top board 3 from the signal detected by the sensor 76. . Next, the control means 74 is used to inspect the induction heating coils 4 corresponding to these areas including the surrounding area as a margin in order to increase the accuracy and the area occupied by the heated object 2 roughly specified by the sensor 76. A current is passed, and the area occupied by the object to be heated 2 is detected with high accuracy using the current detector 121 at that time. The current detected by the current detector 121 is compared with a reference value while a current for inspection is sequentially supplied to all the induction heating coils 4 in the specified occupied area. Then, based on the arrangement position of the induction heating coil 4 where a current greater than the reference value is detected, the occupied area on the top plate 3 of the object to be heated 2 is specified with high accuracy, and the center position and size of this occupied area are calculated. (Steps S1305 to S1307).

次に、制御手段74は表示部5の、被加熱物2の占有領域に対応する領域の表示色を緑色に変える(ステップS1308)。次に、制御手段74は被加熱物2同士の間隔または天板3の端部に最も近い被加熱物2と天板3の端部との間の距離を算出し(ステップS1309)、これらとまだ載置されていない全ての被加熱物2の大きさとを比較して、上記間隔にいずれかの被加熱物が入るか否かを調べる(ステップS1310)。上記間隔にいずれの被加熱物も入らない場合には、その旨をユーザーに伝えるために、表示部5の上記間隔に対応する領域を点滅させて(ステップS1311)、ステップS1312へ進む。上記間隔にいずれかの被加熱物が入る場合には、そのままステップS1312へ進む。ステップS1312では、操作部(非表示ボタン)73が操作済みか否かを調べる。最初はNoだから次のステップS1313へ進む。   Next, the control means 74 changes the display color of the area | region corresponding to the occupation area of the to-be-heated material 2 of the display part 5 to green (step S1308). Next, the control means 74 calculates the distance between the heated objects 2 or the distance between the heated object 2 and the end of the top 3 that is closest to the end of the top 3 (step S1309). It compares with the size of all the to-be-heated objects 2 which are not yet mounted, and it is investigated whether any to-be-heated object enters in the said space | interval (step S1310). If no object to be heated enters the interval, the region corresponding to the interval on the display unit 5 is blinked in order to notify the user to that effect (step S1311), and the process proceeds to step S1312. If any object to be heated enters the interval, the process proceeds to step S1312. In step S1312, it is checked whether or not the operation unit (non-display button) 73 has been operated. Since the first is No, the process proceeds to the next step S1313.

次に、制御手段74は予め記憶手段に記憶させておいた操作部73の画像をタッチパネル78上の、被加熱物2の中心位置付近に表示するとともに、この操作部73の機能を有効にさせ、ユーザーからの操作入力を受け付ける状態にする(ステップS1313)。次に、制御手段74は他に天板3上に他の被加熱物2が有るか否かを調べ、有れば、ステップS1307へ戻り、再び見つかった被加熱物2についてその中心位置と大きさの算出から操作部73の表示までの動作を、鍋が見つからなくなるまで繰り返す(S1307〜S1314)。そして、これ以上見つからなくなれば(ステップS1314の無)、ユーザーがこの操作部73を操作するか否か調べる(ステップS1315)。なお、このときの操作部73の表示形態は図8(c)または図9(c)に示す通りである。ここで、ユーザーが被加熱物2の加熱調理を行う必要がない場合や加熱調理を行いたくない場合、ユーザー自身の意志で操作部73を押す。これにより操作部73の座標が制御手段74に送られ、制御手段74はこの操作部73の座標を受信すると、操作部73の画像を消去させその機能を無効にするとともに、対応する誘導加熱コイルを停止し、表示部5の対応領域の表示を初期状態に戻し(ステップS1316)、ステップS1302へ戻る。   Next, the control unit 74 displays the image of the operation unit 73 stored in advance in the storage unit on the touch panel 78 in the vicinity of the center position of the object to be heated 2 and makes the function of the operation unit 73 effective. The operation input from the user is accepted (step S1313). Next, the control means 74 checks whether or not there is another object to be heated 2 on the top plate 3, and if there is, returns to step S1307, and again finds the object 2 to be heated and its center position and size. The operations from the calculation of the height to the display of the operation unit 73 are repeated until no pan is found (S1307 to S1314). If no more items are found (No in step S1314), it is checked whether or not the user operates the operation unit 73 (step S1315). The display form of the operation unit 73 at this time is as shown in FIG. 8 (c) or FIG. 9 (c). Here, when the user does not need to cook the object to be heated 2 or does not want to perform cooking, the user presses the operation unit 73 at his / her own will. As a result, the coordinates of the operation unit 73 are sent to the control unit 74. When the control unit 74 receives the coordinates of the operation unit 73, the image of the operation unit 73 is erased and the function is invalidated. Is stopped, the display of the corresponding area of the display unit 5 is returned to the initial state (step S1316), and the process returns to step S1302.

ユーザーが操作部73を押さない場合には、制御手段74は前回の被加熱物2の中心位置が移動されたか否かを監視する。すなわち、制御手段74は前回の全ての被加熱物2の中心位置と大きさを記憶手段から取得して、今回推定した被加熱物2の大きさと照合する。照合の結果、同じものが抽出できれば、この被加熱物の前回の中心位置と今回推定された中心位置とを比較して変化があるか否かを判定する(ステップS1317〜S1318)。比較の結果、同じであれば、移動はなかったと判定してステップS1302へ戻り、引き続き監視を継続する。比較の結果、測位に変化が有れば、移動したと判断して、前回の表示部5の表示を元に戻し(ステップS1319)、前回の操作部73を消去するとともにその機能を無効にし(ステップS1018)、前回に対応する誘導加熱コイル4を停止してステップS1307へ戻り移動先の被加熱物の中心位置と大きさ算出、表示部5の表示、操作部73の表示などを再開する。   When the user does not press the operation unit 73, the control unit 74 monitors whether or not the previous center position of the article to be heated 2 has been moved. That is, the control means 74 acquires the previous center positions and sizes of all the heated objects 2 from the storage means, and collates them with the sizes of the heated objects 2 estimated this time. If the same thing can be extracted as a result of the collation, the previous center position of the object to be heated and the center position estimated this time are compared to determine whether or not there is a change (steps S1317 to S1318). If they are the same as a result of the comparison, it is determined that there has been no movement, and the process returns to step S1302 to continue monitoring. As a result of the comparison, if there is a change in positioning, it is determined that it has moved, the display of the previous display unit 5 is restored (step S1319), the previous operation unit 73 is erased, and the function is disabled ( In step S1018), the induction heating coil 4 corresponding to the previous time is stopped, the process returns to step S1307, the calculation of the center position and size of the object to be moved, the display on the display unit 5, the display on the operation unit 73, etc. is resumed.

この実施の形態4によれば、誘導加熱調理器の天板3上で被加熱物2を使って調理するユーザーの居場所に最も近い位置に操作部73が自動的に表示され有効になるので、
ユーザーは被加熱物2を天板3上の自由な位置に配置でき、操作上の利便性の高い調理が可能になる。また、天板上の、被加熱物の占有領域およびその加熱状態、追加して被加熱物が置ける領域、および追加して置けない領域を表示するので、ユーザーはこれらの状態を一目で直感的に理解できる。また、天板3上の被加熱物2を使用しない場合にはユーザーが操作部73を押下することにより操作部73自体を消去できるので、誤動作を防止することができ、安全性を高めることができる。また、調理中に被加熱物2が移動しても移動先に最も近い位置の操作部73が自動的に表示され有効になるので、加熱効率を自動的に維持するとともに調理中に操作上の利便性を損なうことなく継続して快適な調理が可能になる。また、最初は被加熱物2の占有領域を所定の精度で(大雑把に)特定し、次に特定した占有領域だけを高精度で特定するように構成したので、被加熱物2の占有領域を高速で特定することが可能になり、しかもセンサー76の数を誘導加熱コイル4の数より少なくできるため、誘導加熱調理器を安価に供給できる。
According to the fourth embodiment, the operation unit 73 is automatically displayed and enabled at the position closest to the location of the user who cooks using the heated object 2 on the top plate 3 of the induction heating cooker.
The user can arrange the object to be heated 2 at a free position on the top board 3, and cooking with high convenience in operation is possible. In addition, the occupying area of the object to be heated and its heating state, the area where the object to be heated can be placed, and the area where it cannot be additionally placed are displayed on the top board. Can understand. Further, when the object to be heated 2 on the top plate 3 is not used, the operation unit 73 itself can be erased by pressing the operation unit 73 by the user, so that malfunction can be prevented and safety can be improved. it can. In addition, even if the object to be heated 2 moves during cooking, the operation unit 73 closest to the destination is automatically displayed and activated, so that the heating efficiency is automatically maintained and the operation is performed during cooking. Convenient cooking is possible without sacrificing convenience. In addition, since the occupation area of the article to be heated 2 is first specified with a predetermined accuracy (roughly) and then only the specified occupation area is specified with high accuracy, the occupation area of the article to be heated 2 is determined. Since the number of sensors 76 can be smaller than the number of induction heating coils 4, the induction heating cooker can be supplied at low cost.

なお、操作部73を表示するタッチパネル78上に上記表示部5を一緒に表示させてもよい。
また、予め、頻度の高い被加熱物2の場合や容器が大きく天板の真ん中におけば熱が逃げにくく加熱が効率的であるような場合、天板上の位置を予め設定しておき、その容器が天板3に載置されたとき、制御手段74がこの被加熱物2をその大きさから特定できるので、特定したときにその配置位置が上記のような予め設定した位置からずれている場合、表示部5の、上記設定位置の表示を点滅などや色を変えてユーザーに上記設定位置へ被加熱物を移動するように促すようにしてもよい。この構成により省電力を図れる。
また、以上の実施の形態では警報として表示部の表示を点滅するようにしたが、これに限らず、音声も利用することができ、さらに効果を上げることができる。
The display unit 5 may be displayed together on the touch panel 78 that displays the operation unit 73.
In addition, in the case of the object 2 to be heated frequently or when the container is large and the heat is difficult to escape if it is placed in the middle of the top plate, the position on the top plate is set in advance. When the container is placed on the top 3, the control means 74 can identify the object 2 to be heated from its size. Therefore, when the container is specified, the arrangement position is deviated from the preset position as described above. If it is, the display of the set position on the display unit 5 may be blinked or the color may be changed to prompt the user to move the object to be heated to the set position. This configuration can save power.
Further, in the above embodiment, the display on the display unit blinks as an alarm. However, the present invention is not limited to this, and sound can be used, and the effect can be further improved.

この発明に係る誘導加熱調理器の斜視図である。It is a perspective view of the induction heating cooking appliance which concerns on this invention. 天板3と表示部5のレイアウトを示した図である。It is the figure which showed the layout of the top plate 3 and the display part 5. FIG. この発明に係る誘導加熱調理器の被加熱物の載置位置に連動した表示部の表示例を示す図である。It is a figure which shows the example of a display of the display part interlock | cooperated with the mounting position of the to-be-heated material of the induction heating cooking appliance which concerns on this invention. この発明に係る誘導加熱調理器の誘導加熱コイル(小型コイル)のレイアウトを示す図である。It is a figure which shows the layout of the induction heating coil (small coil) of the induction heating cooking appliance which concerns on this invention. この発明に係る誘導加熱調理器の被加熱物検出用センサーのレイアウト例を示す図である。It is a figure which shows the layout example of the to-be-heated object detection sensor of the induction heating cooking appliance which concerns on this invention. この発明に係る誘導加熱調理器の被加熱物検出用センサーとして発光手段と受光手段を用いた場合の光の照射方法を分かりやすく示した説明図である。It is explanatory drawing which showed clearly the irradiation method of the light at the time of using a light emission means and a light-receiving means as a to-be-heated object detection sensor of the induction heating cooking appliance which concerns on this invention. この発明に係る誘導加熱調理器の実施の形態1における回路構成を示すブロック図である。It is a block diagram which shows the circuit structure in Embodiment 1 of the induction heating cooking appliance which concerns on this invention. この発明に係る誘導加熱調理器の天板上での被加熱物と表示部の表示との関係を示す説明図(その1)である。It is explanatory drawing (the 1) which shows the relationship between the to-be-heated object on the top plate of the induction heating cooking appliance which concerns on this invention, and the display of a display part. この発明に係る誘導加熱調理器の天板上での被加熱物と表示部の表示との関係を示す説明図(その2)である。It is explanatory drawing (the 2) which shows the relationship between the to-be-heated material on the top plate of the induction heating cooking appliance which concerns on this invention, and the display of a display part. この発明に係る誘導加熱調理器の実施の形態1の動作を示すフローチャートである。It is a flowchart which shows operation | movement of Embodiment 1 of the induction heating cooking appliance which concerns on this invention. 被加熱物の占有領域の中心位置と大きさを算出するときの動作の流れを示す詳細フローチャートである。It is a detailed flowchart which shows the flow of operation | movement when calculating the center position and magnitude | size of the occupation area of a to-be-heated material. この発明に係る誘導加熱調理器の実施の形態4における回路構成を示すブロック図である。It is a block diagram which shows the circuit structure in Embodiment 4 of the induction heating cooking appliance which concerns on this invention. この発明に係る誘導加熱調理器の実施の形態4の動作を示すフローチャートである。It is a flowchart which shows operation | movement of Embodiment 4 of the induction heating cooking appliance which concerns on this invention. この発明に係る誘導加熱調理器の実施の形態4の動作を示すフローチャートである(続き)。It is a flowchart which shows operation | movement of Embodiment 4 of the induction heating cooking appliance which concerns on this invention (continuation). この発明に係る誘導加熱調理器の表示の方法を示す図である。It is a figure which shows the method of the display of the induction heating cooking appliance which concerns on this invention.

符号の説明Explanation of symbols

1 本体、2 被加熱物(鍋)、3 天板、4 誘導加熱コイル(小型コイル)、5 表示部、6 本体側操作部、7 ロースタ、10 光源、71 コンバータ、72 インバータ、73 操作部(非表示ボタン)、74 制御手段、75 共振コンデンサ、76 センサー、77 鍋検出回路、78 タッチパネル、121 電流検出器。   1 main body, 2 object to be heated (pan), 3 top plate, 4 induction heating coil (small coil), 5 display section, 6 main body side operation section, 7 roaster, 10 light source, 71 converter, 72 inverter, 73 operation section ( (Non-display button), 74 control means, 75 resonance capacitor, 76 sensor, 77 pan detection circuit, 78 touch panel, 121 current detector.

Claims (11)

鍋などの被加熱物を載置する天板と、
前記天板の下方にほぼ均一に分散配置された複数の誘導加熱コイルと、
載置された被加熱物の位置を検出する被加熱物検出手段と、
被加熱物が載置されていない領域に他の被加熱物を載置可能か否か判断する載置可能性判断手段と、
前記載置可能性判断手段の判断結果に応じて、他の被加熱物の載置可能領域を表示する表示手段と、
を備えた誘導加熱調理器。
A top plate on which a heated object such as a pan is placed;
A plurality of induction heating coils arranged substantially uniformly below the top plate;
A heated object detecting means for detecting the position of the heated object mounted;
A placement possibility judging means for judging whether or not another heated object can be placed in a region where the heated object is not placed;
In accordance with the determination result of the previous placement possibility determination means, a display means for displaying a placeable area of another object to be heated,
Induction heating cooker with.
前記表示手段は、本体の上面の周縁に帯状に設けられ、被加熱物の載置領域に対応する部分と、他の被加熱物が載置可能な領域に対応する部分とを異なる表示で表すものであることを特徴とする請求項1に記載の誘導加熱調理器。   The display means is provided in a strip shape on the periphery of the upper surface of the main body, and represents a portion corresponding to the placement area of the object to be heated and a portion corresponding to an area where another object to be heated can be placed by different displays. The induction heating cooker according to claim 1, wherein the induction heating cooker is a thing. 前記表示手段は、前記天板の下方に設けられた複数の光源を点灯することにより、他の被加熱物が載置可能な領域を面状に表すものであることを特徴とする請求項1に記載の誘導加熱調理器。   2. The display means displays a region in which another object to be heated can be placed in a planar shape by turning on a plurality of light sources provided below the top plate. The induction heating cooker described in 1. 前記表示手段は、本体の側方または上方に設けられた光源により本体上面を照らすことにより、他の被加熱物が載置可能な領域を面状に表すものであることを特徴とする請求項1に記載の誘導加熱調理器。   The display means illuminates the upper surface of the main body with a light source provided on the side or upper side of the main body to represent a region in which another object to be heated can be placed in a planar shape. The induction heating cooker according to 1. 前記載置可能性判断手段は、載置された被加熱物同士の間隔および載置された被加熱物と前記天板の端部との間隔を所定距離と比較し、所定距離より大きければ他の被加熱物を載置可能と判断するものであることを特徴とする請求項1に記載の誘導加熱調理器。   The placement possibility judging means compares the distance between the placed heated objects and the distance between the placed heated object and the end of the top plate with a predetermined distance. The induction heating cooker according to claim 1, wherein the object to be heated is determined to be mountable. 前記載置可能性判断手段は、載置された被加熱物の個数が所定個数以下であれば他の被加熱物を載置可能と判断するものであることを特徴とする請求項1に記載の誘導加熱調理器。   2. The above-described placement possibility determining means determines that another heated object can be placed if the number of placed heated objects is equal to or less than a predetermined number. Induction heating cooker. 前記載置可能性判断手段は、使用中の電力量が所定量以下であれば他の被加熱物を載置可能と判断するものであることを特徴とする請求項1に記載の誘導加熱調理器。   The induction heating cooking according to claim 1, wherein the placement possibility judging means judges that another object to be heated can be placed if the amount of electric power in use is not more than a predetermined amount. vessel. 使用する被加熱物の大きさを記憶する記憶手段を備え、
前記載置可能性判断手段は、載置された被加熱物同士の間隔および載置された被加熱物と前記天板の端部との間隔を前記記憶手段に記憶された被加熱物のうち載置されていない被加熱物の大きさと比較し、前記間隔が載置されていない被加熱物の大きさより大きい場合には他の被加熱物を載置可能と判断するものであることを特徴とする請求項1に記載の誘導加熱調理器。
A storage means for storing the size of the object to be used;
The placement possibility determining means includes the distance between the placed heated objects and the distance between the placed heated object and the end of the top plate among the heated objects stored in the storage means. Compared with the size of the object to be heated that is not placed, if the distance is larger than the size of the object to be heated that is not placed, it is determined that another object to be heated can be placed. The induction heating cooker according to claim 1.
前記被加熱物の温度を検知する赤外線検出手段を備え、
前記表示手段は、前記赤外線検出手段が検知した温度の高低に応じて前記被加熱物に対応する部分の表示色を変えることを特徴とする請求項1〜8のいずれかに記載の誘導加熱調理器。
Infrared detection means for detecting the temperature of the heated object,
The induction heating cooking according to any one of claims 1 to 8, wherein the display means changes a display color of a portion corresponding to the object to be heated according to a temperature level detected by the infrared detection means. vessel.
載置された被加熱物の載置位置に対応する前記表示手段の表示部分の近傍に前記表示手段の表示を消す操作手段を備えたことを特徴とする請求項1〜9のいずれかに記載の誘導加熱調理器。   The operation means which erases the display of the said display means in the vicinity of the display part of the said display means corresponding to the mounting position of the mounted to-be-heated material is provided. Induction heating cooker. 前記被加熱物検出手段は、前記誘導加熱コイルの隙間に配置された容量検知手段であることを特徴とする請求項1〜10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 10, wherein the object to be heated detection means is a capacity detection means arranged in a gap between the induction heating coils.
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