JP5272612B2 - Induction heating cooker - Google Patents
Induction heating cooker Download PDFInfo
- Publication number
- JP5272612B2 JP5272612B2 JP2008245835A JP2008245835A JP5272612B2 JP 5272612 B2 JP5272612 B2 JP 5272612B2 JP 2008245835 A JP2008245835 A JP 2008245835A JP 2008245835 A JP2008245835 A JP 2008245835A JP 5272612 B2 JP5272612 B2 JP 5272612B2
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- heated
- heating
- heating coil
- vibration detection
- control means
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/05—Heating plates with pan detection means
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Induction Heating Cooking Devices (AREA)
Description
本発明は、誘導加熱される鍋などの被加熱物の位置検知機能を有する誘導加熱調理器に関するものである。 The present invention relates to an induction heating cooker having a function of detecting the position of an object to be heated such as a pan that is induction-heated.
従来、この種の誘導加熱調理器は、被加熱物が適切な位置に載置されているかどうか確認するために、加熱コイルに流れる電流に基づいて加熱コイルと被加熱物とを電磁結合させた状態、あるいは無負荷状態における共振周波数を検出し、検出した共振周波数に基づいて無負荷状態か否かの判別を行う(例えば、特許文献1参照)。 Conventionally, this type of induction heating cooker electromagnetically couples the heating coil and the object to be heated based on the current flowing through the heating coil in order to confirm whether the object to be heated is placed at an appropriate position. The resonance frequency in the state or in the no-load state is detected, and it is determined whether or not the load is in the no-load state based on the detected resonance frequency (see, for example, Patent Document 1).
図4は、特許文献1に記載された従来の誘導加熱調理器の図である。図4は共振周波数検出部5cで検出した共振周波数と、ピーク電流検出回路4で検出した電流値に基づき、被加熱物の有無を判別している。
しかしながら、前記従来の構成では、加熱コイルの真上の適切な位置に被加熱物がセットされた場合には、被加熱物の有無は精度良く検出できるが、加熱コイルからずれた位置に被加熱物がセットされてしまった場合には、無負荷と判定されて加熱ができなかったり、加熱コイルを複数使用し、高周波電流の供給を制御する制御手段を共通で使用するような構成では、被加熱物の有無は検出できなくなるという課題を有している。 However, in the conventional configuration, when an object to be heated is set at an appropriate position directly above the heating coil, the presence or absence of the object to be heated can be accurately detected, but the object to be heated is displaced from the heating coil. If an object has been set, it is determined that there is no load and heating cannot be performed, or in a configuration in which a plurality of heating coils are used and control means for controlling the supply of high-frequency current is used in common, There is a problem that the presence or absence of a heated object cannot be detected.
本発明は、前記従来の課題を解決するもので、加熱コイル電流や共振周波数を検出せずに、被加熱物の有無や被加熱物の底の形状を精度良く検出し、使い勝手が良く、加熱効率の良い誘導加熱調理器を提供することを目的とする。 The present invention solves the above-mentioned conventional problems, and without detecting the heating coil current or resonance frequency, accurately detects the presence or absence of the object to be heated and the shape of the bottom of the object to be heated. An object is to provide an efficient induction heating cooker.
前記従来の課題を解決するために、本発明の誘導加熱調理器は、誘導加熱を行う加熱コイルと、加熱コイルへの高周波電流の供給を制御する加熱制御手段と、加熱コイル上に設けられ被加熱物が載置される加熱エリアを有するプレートと、プレートの下方に設けられた複数の振動検知センサと、複数の振動検知センサからの情報を基に被加熱物の有無と形状とを検出する被加熱物位置検出手段と、被加熱物位置検出手段からの情報を基に加熱制御手段を制御する制御手段とを備え、複数の振動検知センサは、加熱コイルの中心付近の下方に一つ配置され、加熱コイルの外周付近の下方に複数個等間隔に配置されたことを特徴としたものである。また、鍋をプレート上から取り除く場合も、プレートには振動が発生するため、鍋がプレート上から取り除かれた時も判断することができる。これにより被加熱物の有無と形状を精度良く判別し、利便性の高い誘導加熱調理器を実現することができる。また、加熱コイル電流や共振周波数を検出による被加熱物の検出に比べ、応答性に優れており、使用者が被加熱物を動かした場合でも自動で被加熱物位置を追従して、自動加熱を行うことも可能である。 In order to solve the above conventional problems, the induction heating cooker of the present invention includes a heating coil for performing induction heating, a heating control means for controlling the supply of high-frequency current to the heating coil, provided on the heating coil to be Based on information from a plate having a heating area on which a heated object is placed, a plurality of vibration detection sensors provided below the plate , and a plurality of vibration detection sensors, the presence / absence and shape of the object to be heated are detected. A heated object position detecting means and a control means for controlling the heating control means based on information from the heated object position detecting means , and a plurality of vibration detection sensors are arranged below the vicinity of the center of the heating coil. A plurality of the coils are arranged at equal intervals below the outer periphery of the heating coil . Further, when the pan is removed from the plate, since vibration occurs in the plate, it can be determined when the pan is removed from the plate. This makes it possible to accurately determine the presence and shape of the object to be heated and realize a highly convenient induction heating cooker. Compared to detection of the object to be heated by detecting the heating coil current and resonance frequency, it has better responsiveness. It is also possible to perform.
本発明の誘導加熱調理器は、加熱コイル電流や共振周波数を検出せずに、被加熱物の有無と形状を精度良く判別し、利便性の高い誘導加熱調理器を提供することができる。 The induction cooking device of the present invention can accurately determine the presence and shape of an object to be heated without detecting the heating coil current and the resonance frequency, and can provide a highly convenient induction heating cooking device.
第1の発明は、誘導加熱を行う加熱コイルと、加熱コイルへの高周波電流の供給を制御する加熱制御手段と、加熱コイル上に設けられ被加熱物が載置される加熱エリアを有するプレートと、プレートの下方に設けられた複数の振動検知センサと、複数の振動検知センサからの情報を基に被加熱物の有無と形状とを検出する被加熱物位置検出手段と、被加熱物位置検出手段からの情報を基に加熱制御手段を制御する制御手段とを備え、複数の振動検知センサは、加熱コイルの中心付近の下方に一つ配置され、加熱コイルの外周付近の下方に複数個等間隔に配置されたことを特徴としている。これにより、加熱コイル電流や共振周波数を検出せずに、被加熱物の有無を精度良く判別し、利便性の高い誘導加熱調理器を実現できる。 A first invention includes a heating coil that performs induction heating, a heating control unit that controls supply of a high-frequency current to the heating coil, and a plate that is provided on the heating coil and has a heating area on which an object to be heated is placed. A plurality of vibration detection sensors provided below the plate, a heated object position detecting means for detecting presence / absence and shape of the heated object based on information from the plurality of vibration detection sensors, and a heated object position detection Control means for controlling the heating control means based on information from the means, and a plurality of vibration detection sensors are arranged below the vicinity of the center of the heating coil, and a plurality of vibration sensors are provided below the vicinity of the outer periphery of the heating coil. It is characterized by being arranged at intervals . Thereby, without detecting a heating coil current and a resonance frequency, the presence or absence of a to-be-heated object can be discriminate | determined accurately and a highly convenient induction heating cooking appliance can be implement | achieved.
また、被加熱物の有無と、形状を判断することができ、より精度良く判定することができる。 Moreover, the presence or absence of a to- be-heated object and a shape can be judged and it can judge more accurately.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
(実施の形態1)
図1は、本発明の第1の実施の形態における誘導加熱調理器の構成図であり、図1(a)は上面図、図1(b)は正面図である。20は結晶化ガラスなどよりなるトッププレート、21はトッププレート20上に載置され調理物を加熱調理する鍋、フライパン等の被加熱物と、トッププレート上の被加熱物21を検出する振動検知センサ22が配置されている。23は加熱エリアである。本実施の形態では、図1(a)のように振動検知センサ22を配置しているが、これに限定するものではない。
(Embodiment 1)
FIG. 1 is a configuration diagram of an induction heating cooker according to the first embodiment of the present invention, in which FIG. 1 (a) is a top view and FIG. 1 (b) is a front view. 20 is a top plate made of crystallized glass and the like, 21 is a vibration detector that is placed on the
図2は、本発明の第1の実施の形態における誘導加熱調理器の断面図であり、30は、被加熱物21を加熱する加熱コイル、31は加熱コイル30を支持するコイルベース、32は加熱コイル30に高周波電流を供給し、被加熱物21を誘導加熱する加熱制御手段、33は複数の振動検知センサ22からの出力信号を検出し、被加熱物21がトッププレート20上に有るかどうかを検出する被加熱物位置検出手段、34は被加熱物位置検出手段33からの情報を基に加熱制御手段32を制御する制御手段である。
FIG. 2 is a cross-sectional view of the induction heating cooker according to the first embodiment of the present invention, in which 30 is a heating coil that heats the article to be heated 21, 31 is a coil base that supports the
以上のように構成された誘導加熱調理器について、以下その動作、作用について説明する。 About the induction heating cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
まず、鍋などの被加熱物21を加熱エリア23内に載置した場合は、第1の振動検知センサ220、第2の振動検知センサ221、第3の振動検知センサ222の振動検知センサで、被加熱物21を検知するため、被加熱物位置検出手段33は、被加熱物21が載置されたと判定することができる。また、ナイフ等の被加熱物以外の物が載置された場合は、被加熱物位置検出手段33は、例えば、第1の振動検知センサ220で検知し、第2、第3の振動検知センサ221、222では検知されないため、被加熱物ではないと判定することが可能となる。このように、被加熱物21が載置していると判定している場合は、被加熱物位置検出手段33から制御手段34に被加熱物21有りの信号を出力し、制御手段34は加熱制御手段32で被加熱物21の加熱を行い、被加熱物21が取り除かれた場合は、加熱の停止を行うよう制御し、簡単な構成で安全性の高い調理器を実現することができる。また、加熱コイル30を図3に示すような構成とし、加熱エリア23をトッププレート20全面として、トッププレート20のどこに置いても、被加熱物21の検知が可能で、被加熱物のある加熱コイル30だけ加熱制御することも可能であり、使用者が被加熱物21を移動させてもそれを検知して、自動で調理することができ、非常に利便性の高い加熱調理器を実現することができる。
First, when the object to be heated 21 such as a pan is placed in the
以上のように、本発明にかかる誘導加熱調理器は、加熱コイルの電流や共振周波数を用いなくても被加熱物の位置や形状が簡単に、しかも素早く判定することができるため、誘導加熱調理器はもとより、ラジエントヒータ式加熱調理器などにも適用できる。 As described above, the induction heating cooker according to the present invention can easily and quickly determine the position and shape of the object to be heated without using the current and resonance frequency of the heating coil. It can be applied not only to the cooker but also to the radiant heater type cooking device.
20 トッププレート
21 被加熱物
22 振動検知センサ
220 第1の振動検知センサ
221 第2の振動検知センサ
222 第3の振動検知センサ
30 加熱コイル
31 コイルベース
32 加熱制御手段
33 被加熱物位置検出手段
34 制御手段
20
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JP2008245835A JP5272612B2 (en) | 2008-09-25 | 2008-09-25 | Induction heating cooker |
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JP2008245835A JP5272612B2 (en) | 2008-09-25 | 2008-09-25 | Induction heating cooker |
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JP2010080187A JP2010080187A (en) | 2010-04-08 |
JP5272612B2 true JP5272612B2 (en) | 2013-08-28 |
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JP2008245835A Expired - Fee Related JP5272612B2 (en) | 2008-09-25 | 2008-09-25 | Induction heating cooker |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2600691B1 (en) * | 2011-11-29 | 2019-09-04 | BSH Hausgeräte GmbH | Cooking hob |
CN102692940A (en) * | 2012-05-23 | 2012-09-26 | 浙江工业大学 | High-temperature strain disc based cuisine mode control method for induction cooker |
CN106152188B (en) * | 2015-04-07 | 2019-01-01 | 珠海格力电器股份有限公司 | Electromagnetic oven and control method thereof |
DE102015105452A1 (en) * | 2015-04-10 | 2016-10-13 | Miele & Cie. Kg | Method for operating a hob and a hob |
KR20190111530A (en) * | 2018-03-23 | 2019-10-02 | 엘지전자 주식회사 | Cooking appliance |
KR20190115751A (en) * | 2018-04-03 | 2019-10-14 | 엘지전자 주식회사 | Zone free type induction heating device having improved user experience and user interface |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11173567A (en) * | 1997-12-09 | 1999-06-29 | Sharp Corp | Heating cooker |
JP3899453B2 (en) * | 2001-05-28 | 2007-03-28 | 三菱電機ホーム機器株式会社 | Induction heating cooker |
JP4649803B2 (en) * | 2001-08-31 | 2011-03-16 | パナソニック株式会社 | Cooker |
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