JP5877303B2 - Induction heating cooker - Google Patents
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- JP5877303B2 JP5877303B2 JP2011124811A JP2011124811A JP5877303B2 JP 5877303 B2 JP5877303 B2 JP 5877303B2 JP 2011124811 A JP2011124811 A JP 2011124811A JP 2011124811 A JP2011124811 A JP 2011124811A JP 5877303 B2 JP5877303 B2 JP 5877303B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
本発明は、一般家庭及び業務用として使用され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 used for general household and business use.
従来、この種の誘導加熱調理器は、揚げ物調理時において、鍋の油温が設定温度（Ｔ１）に到達した後に、それより高温の設定温度（Ｔ２）の温度内に指定時間を維持し、その指定時間が経過した後に適温報知を行う。また、前記設定温度（Ｔ１）に到達した時点でブザーや音声等により，その旨を使用者に事前に報知するとともに、表示部に指定時間の残時間を表示させる構成となっている（例えば、特許文献１参照）。 Conventionally, this type of induction heating cooker maintains a specified time within a set temperature (T2) higher than the set temperature (T2) after the oil temperature of the pan reaches the set temperature (T1) during frying. After the specified time has passed, the appropriate temperature notification is given. In addition, when the temperature reaches the set temperature (T1), the user is notified in advance by a buzzer, voice, or the like, and the remaining time of the specified time is displayed on the display unit (for example, Patent Document 1).
しかしながら、前記従来の構成では適温報知時間において、加熱する鍋の材質や大きさ、厚み及び油量や加熱開始時の鍋の温度や油温の違いにより、適温までの時間が不定であり、設定温度到達から一定時間とする指定時間の構成では、その時間内に適温状態にならずに、適温報知までの残時間の精度が悪いという課題を有していた。 However, in the conventional configuration, the time to the proper temperature is indefinite due to the difference in the material, size, thickness, and oil amount of the pan to be heated, and the temperature and oil temperature of the pan at the start of heating. In the configuration of the designated time that is a fixed time from the temperature arrival, there is a problem that the accuracy of the remaining time until the notification of the appropriate temperature is poor without being in an appropriate temperature state within that time.
本発明は、前記従来の課題を解決するもので、油温が適温になるまでの時間を精度よく認識することができ、調理物の準備がしやすく使い勝手が向上し、また、予熱報知後すぐに調理を開始させることができるために余分な加熱時間が低減され、省エネ効果が高く使い勝手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-described conventional problems, can accurately recognize the time until the oil temperature reaches an appropriate temperature, facilitates preparation of the cooking, improves usability, and immediately after the preheat notification. It is an object of the present invention to provide an induction heating cooker that has an extra energy saving effect and is easy to use.
前記従来の課題を解決するために、本発明の加熱調理器は、被加熱物を載置するトッププレートと、前記被加熱物と磁気結合する加熱コイル、及び前記加熱コイルと共振する共振コンデンサを有する共振回路、並びに、オンオフすることにより前記共振回路に共振電流を発生するスイッチング素子を有し、商用電源から前記共振回路に電力を供給するインバータと、前記被加熱物の底面温度を検知する温度検知手段と、前記温度検知手段から得られる温度が所定の制御温度となるように前記スイッチング素子の駆動信号を出力して前記加熱コイルの加熱出力を制御する制御手段と、前記所定の制御温度を設定できる温度設定手段と、前記温度設定手段の設定内容を表示する表示手段と、前記温度設定手段で設定された設定温度で調理を開始できる時点をブザーや光や音声、画面表示により予熱完了として報知する報知手段と、を備え、前記制御手段は、所定の加熱出力で加熱を開始し、前記被加熱物の温度が前記設定温度を超えた後、前記被加熱物から熱伝導した油温が前記設定温度を超えた時点で、加熱を停止するか、または、加熱を弱めた後、前記被加熱物の温度が上昇から下降に変化する変曲点である最高温度到達点を求め、前記最高温度到達点の最高到達温度と前記設定温度との差が大きいと、調理を開始できる予熱完了報知点までの予熱完了報知時間を長く、また、逆に小さいと短い時間に変更し、その変更された前記予熱完了報知点からあらかじめ設定された予熱完了事前報知時間を遡った予熱完了事前報知点でブザーや光や音声、画面表示の前記報知手段により予熱完了の事前報知を行うことにより、加熱する鍋の材質（大きさ、厚み）及び油量や加熱開始時の温度や油温の違いによるそれぞれの加熱環境に合わせて予熱完了の報知時間をそれぞれ変更し、その変更された予熱報知時間を元に、あらかじめ設定された時間を遡った時点を予熱完了の事前報知点とすることで、様々な加熱環境に応じて精度よく予熱完了の事前報知を行うことを可能としたものである。
In order to solve the conventional problems, a heating cooker according to the present invention includes a top plate on which an object to be heated is placed, a heating coil that is magnetically coupled to the object to be heated, and a resonant capacitor that resonates with the heating coil. A resonance circuit having a switching element that generates a resonance current in the resonance circuit by being turned on and off, and an inverter that supplies power to the resonance circuit from a commercial power supply; and a temperature that detects a bottom surface temperature of the object to be heated Detecting means, control means for outputting a drive signal of the switching element so as to control the heating output of the heating coil so that the temperature obtained from the temperature detecting means becomes a predetermined control temperature, and the predetermined control temperature. The temperature setting means that can be set, the display means for displaying the setting contents of the temperature setting means, and cooking can be started at the set temperature set by the temperature setting means. A notification means for notifying that the preheating is completed by a buzzer, light, sound, or screen display, and the control means starts heating at a predetermined heating output, and the temperature of the object to be heated is equal to the set temperature. After exceeding, when the temperature of the oil conducted from the object to be heated exceeds the set temperature, the heating is stopped or the temperature of the object to be heated is changed from rising to falling after the heating is weakened. When the maximum temperature reaching point that is the inflection point is obtained and the difference between the maximum temperature reaching the maximum temperature reaching point and the set temperature is large, the preheating completion notification time to the preheating completion notification point at which cooking can be started is lengthened. On the contrary, if it is small, the time is changed to a short time, and the buzzer, light, voice, and screen display at the preheating completion prior notification point that goes back from the preheating completion prior notification time set in advance from the changed preheating completion notification point. Preheating by notification means By performing the pre-notification of completion, changes pot material (size, thickness) for heating and the amount of oil or heating start temperature and the oil temperature difference by the respective heating environment combined with the broadcast time of the completion of preheating, respectively Then, based on the changed preheating notification time, the preliminary notification of the completion of preheating is performed accurately according to various heating environments by setting the time point that is set in advance as a prior notification point for completion of preheating. It is possible to do that.
本発明の誘導加熱調理器は、被加熱物の材質や形状、被加熱物内に収容された油や調理物の量、加熱開始時の被加熱物の温度に影響されない高精度な予熱完了の事前報知をすることができ、余分な加熱時間が低減され、省エネ効果が高く使い勝手を良くすることができる。 The induction heating cooker according to the present invention has a high-precision preheating completion that is not affected by the material and shape of the object to be heated, the amount of oil or food contained in the object to be heated, and the temperature of the object to be heated at the start of heating. Advance notification can be made, the extra heating time is reduced, the energy saving effect is high, and the usability can be improved.
第１の発明は、被加熱物を載置するトッププレートと、前記被加熱物と磁気結合する加
熱コイル、及び前記加熱コイルと共振する共振コンデンサを有する共振回路、並びに、オンオフすることにより前記共振回路に共振電流を発生するスイッチング素子を有し、商用電源から前記共振回路に電力を供給するインバータと、前記被加熱物の底面温度を検知する温度検知手段と、前記温度検知手段から得られる温度が所定の制御温度となるように、前記スイッチング素子の駆動信号を出力して、前記加熱コイルの加熱出力を制御する制御手段と、前記所定の制御温度を設定できる温度設定手段と、前記温度設定手段の設定内容を表示する表示手段と、前記温度設定手段で設定された設定温度で調理を開始できる時点をブザーや光や音声、画面表示により予熱完了として報知する報知手段と、を備え、前記制御手段は、所定の加熱出力で加熱を開始し、前記被加熱物の温度が前記設定温度を超えた後、前記被加熱物から熱伝導した油温が前記設定温度を超えた時点で、加熱を停止するか、または、加熱を弱めた後、前記被加熱物の温度が上昇から下降に変化する変曲点である最高温度到達点を求め、前記最高温度到達点の最高到達温度と前記設定温度との差が大きいと、調理を開始できる予熱完了報知点までの予熱完了報知時間を長く、また、逆に小さいと短い時間に変更し、その変更された前記予熱完了報知点からあらかじめ設定された予熱完了事前報知時間を遡った予熱完了事前報知点でブザーや光や音声、画面表示示の前記報知手段により予熱完了の事前報知を行うものである。
A first aspect of the present invention is a resonant circuit having a top plate for placing an object to be heated, the object to be heated is magnetically coupled to heating coil, and a resonant capacitor which resonates with the heating coil, and the resonance by turning on and off a switching element for generating a resonant current in the circuit, a temperature detection means for detecting an inverter for supplying power, a bottom temperature before Symbol object to be heated in the resonant circuit from the commercial power supply, obtained from the temperature sensing means A control means for controlling the heating output of the heating coil by outputting a drive signal for the switching element so that the temperature becomes a predetermined control temperature, a temperature setting means for setting the predetermined control temperature, and the temperature display means for displaying the setting contents of the setting unit, the temperature setting set set temperature cooking buzzer or light or sound to the time that can be started by means screen display And a notification means for notifying a more completion of preheating, the control unit starts heating at a predetermined heating output, after the temperature of the object to be heated exceeds the set temperature, the heat conduction from the heated object When the heated oil temperature exceeds the set temperature, stop the heating or weaken the heating, and then the maximum temperature reaching point, which is an inflection point at which the temperature of the heated object changes from rising to falling. determined, wherein the difference between the maximum temperature and the set temperature of the maximum temperature point is large, a long preheating completion notification time until completion of preheating notification point can start cooking, also change to the Most short time small conversely The preheating completion notification point is notified by the notification means of the buzzer, light, voice, and screen display at the preheating completion notification point that has been set in advance from the changed preheating completion notification point. Is.
これによって、被加熱物の材質や形状に応じた正確な予熱完了の事前報知を行う誘導加熱調理器を実現することができる。 Thereby, the induction heating cooking appliance which performs prior notification of the exact preheating completion according to the material and shape of a to-be-heated material is realizable.
第２の発明は、特に、第１の発明において、前記加熱コイルに流れる高周波電流あるいは印加される高周波電圧と、電源電流との関係から前記被加熱物の材質を検出する材質検知手段を備え、前記材質検知手段により前記被加熱物の材質を判別し、前記被加熱物の材質に合わせた加熱出力で加熱開始後、所定時間毎に前記温度検知手段の出力から温度上昇値を求め、前記設定温度に到達点するまでの間に、前記被加熱物の材質毎に決められた所定の温度上昇値を超えると、前記被加熱物の温度があらかじめ温められていたと判定し、前記被加熱物から熱伝導した油温が前記設定温度より低い温度で加熱を停止するか、または、加熱を弱め、前記最高温度到達点があらかじめ温められていない被加熱物を加熱した場合と同じ値となるように制御するものである。
According to a second aspect of the invention, in particular, in the first aspect of the invention, there is provided a material detection means for detecting the material of the object to be heated from the relationship between a high-frequency current flowing through the heating coil or an applied high-frequency voltage and a power supply current , The material detecting means discriminates the material of the object to be heated, starts heating with a heating output that matches the material of the object to be heated , obtains a temperature rise value from the output of the temperature detecting means every predetermined time, and sets the setting. before reaching point temperature, said exceeds a predetermined temperature rise value determined for each material of the object to be heated, it is determined that the temperature of the heated object had been prewarmed, from the object to be heated Stop heating at a temperature where the heat- transferred oil temperature is lower than the set temperature, or weaken the heating so that the maximum temperature reaching point is the same value as when heating an object to be heated that has not been heated in advance. control Is shall.
これによって、被加熱物の加熱開始時の状態に左右されずに、正確な予熱完了の事前報知を行う誘導加熱調理器を実現することができる。 Thereby, it is possible to realize an induction heating cooker that performs an advance notice of the completion of preheating accurately without being influenced by the state at the start of heating of the object to be heated.
第３の発明は、特に、第１の発明において、前記加熱コイルに流れる高周波電流あるいは印加される高周波電圧と、電源電流との関係から前記被加熱物の材質を検出する材質検知手段を備え、前記材質検知手段により前記被加熱物の材質を判別し、前記被加熱物の材質に合わせた加熱出力で加熱開始後、所定時間毎に前記温度検知手段の出力から温度上昇値を求め、前記設定温度に到達するまでの間に、前記被加熱物の材質毎に決められた所定の温度上昇値を下まわると、前記被加熱物内に収容された油や調理物の量が所定の量よりも多い状態であると判定し、調理を開始できる前記予熱完了報知点までの時間を前記所定の量の場合より長く変更するものである。
In a third aspect of the invention, in particular, in the first aspect of the invention, there is provided a material detection means for detecting the material of the object to be heated from the relationship between a high-frequency current flowing through the heating coil or an applied high-frequency voltage and a power supply current , The material detecting means discriminates the material of the object to be heated, starts heating with a heating output that matches the material of the object to be heated , obtains a temperature rise value from the output of the temperature detecting means every predetermined time, and sets the setting. before reaching the temperature and falls below the predetermined temperature rise value determined for each material of the object to be heated, than the amount the amount of a given said object to be heated contained oils and food in also determined to be high state is the time until the completion of preheating notification point can start cooking which changes longer than the predetermined amount.
これによって、正確な予熱完了の事前報知を行う誘導加熱調理器を実現できる。 Thereby, the induction heating cooking appliance which performs prior notification of exact preheating completion is realizable.
第４の発明は、特に、第１〜３のいずれか１つの発明において、前記予熱完了事前報知時間を使用者の好みに合わせて変更することができるものである。
A fourth invention is, in particular, in the first to third any one invention of are those that can be modified to suit the completion of preheating advance notification time preference of the user.
これによって、より使い勝手が良い誘導加熱調理器を実現できる。 Thus, an induction heating cooker that is more convenient to use can be realized.
第５の発明は、特に、第１〜４のいずれか１つの発明において、前記予熱完了事前報知点での前記報知手段を音声または文字出力のみとしたものであある。
A fifth invention is, in particular, in the first to fourth one of the invention, Aaru said notifying means in said preheating complete pre notification point at which the voice or was only a character output.
これによって、予熱完了報知と予熱完了事前報知とを確実に区別することで、予熱完了の前に食材の投入や、調理を開始するような失敗を回避できる誘導加熱調理器を実現することができる。 By this, the induction heating cooker which can avoid the failure | failure which throws in foodstuffs or starts cooking before completion of preheating is realizable by distinguishing preheating completion notification and preheating completion preliminary notification reliably. .
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、この実施形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.
（実施の形態１）
図１は、本発明の第１の実施の形態における誘導加熱調理器の構成を示す図、図２は本発明の誘導加熱調理器における油温の加熱制御方法を示す図である。
(Embodiment 1)
FIG. 1 is a diagram illustrating a configuration of an induction heating cooker according to a first embodiment of the present invention, and FIG. 2 is a diagram illustrating a method for controlling oil temperature heating in the induction heating cooker according to the present invention.
図１、図２において、本実施の形態における誘導加熱装置は、商用交流電源５を駆動電源としており、被加熱物１を載置するトッププレート２と、その下方に設けられ高周波磁界を発生し鍋などの被加熱物１を加熱する加熱コイル３と、被加熱物１の底面の温度を検知する温度検知手段４と、温度検知手段４から得られる温度が温度設定手段８により設定された所定の制御温度となるようにインバータ回路６を通して加熱コイル３の加熱出力を制御する制御手段７と、温度設定手段８の設定内容を表示する表示手段９と、設定された温度で調理を開始できる時点をブザーや光や音声、画面表示などで報知する報知手段１０とで構成している。
1 and 2, the induction heating apparatus according to the present embodiment uses a commercial
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、作用を説明する。 About the induction heating cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
まず、前記インバータ回路６から加熱コイル３に電力を供給すると、加熱コイル３に誘導磁界が発生し、トッププレート２上の被加熱物１が加熱される。この誘導加熱によって被加熱物１の温度が上昇し、被加熱物１内の例えば油温度２１が上昇する。
First, when electric power is supplied from the inverter circuit 6 to the
その油温度２１が、温度設定手段８によって設定された設定温度（Ｔａ）２２を超えた時点で、油温上昇率２９をもとに制御手段７により加熱を停止するか、もしくは、加熱出力を弱め、被加熱物１の温度が上昇から下降に変化する変曲点である最高温度到達点（Ａ）２４を求める。
When the
その変曲点である最高到達温度（Ｔｐ）２３と設定温度（Ｔａ）２２との差より、調理を開始できる予熱完了報知点（Ｃ）２６までの予熱完了報知時間（Ｌａ）２７を決定する。 A preheating completion notification time (La) 27 to a preheating completion notification point (C) 26 at which cooking can be started is determined based on the difference between the maximum reached temperature (Tp) 23 and the set temperature (Ta) 22 as the inflection point. .
これにより、例えば、最高到達温度（Ｔｐ）２３と設定温度（Ｔａ）２２との差が大きいと予熱完了報知時間（Ｌａ）２７は長く、また、逆に少ないと短い時間に変更することができる。 Thereby, for example, if the difference between the maximum temperature (Tp) 23 and the set temperature (Ta) 22 is large, the preheating completion notification time (La) 27 is long, and conversely, if it is small, it can be changed to a short time. .
次に、その可変される予熱完了報知点（Ｃ）２６が決定されてから、あらかじめ設定されている予熱完了事前報知時間（Ｌｂ）２８を遡った、予熱完了事前報知点（Ｂ）２５において、ブザーや光や音声、画面表示などにより予熱完了の事前報知として、報知手段１０により、使用者に報せる。 Next, at the preheating completion prior notification point (B) 25 that goes back to the preset preheating completion prior notification time (Lb) 28 after the variable preheating completion notification point (C) 26 is determined, As a prior notice of the completion of preheating by a buzzer, light, voice, screen display, etc., the notice means 10 can inform the user.
また、最高温度到達点（Ａ）２４において、温度検知手段４が最高到達温度（Ｔｐ）２３を検知して、最高到達温度（Ｔｐ）２３と設定温度（Ｔａ）２２との差をもとに調理を開始できる予熱完了報知点（Ｃ）２６までの予熱完了報知時間（Ｌａ）２７を変更してもよい。 Further, at the maximum temperature reaching point (A) 24, the temperature detection means 4 detects the maximum temperature reached (Tp) 23, and based on the difference between the maximum temperature reached (Tp) 23 and the set temperature (Ta) 22. The preheating completion notification time (La) 27 up to the preheating completion notification point (C) 26 at which cooking can be started may be changed.
また、予熱完了報知時間（Ｌａ）２７は、最高温度到達点（Ａ）２４において、温度検知手段４が検知した最高到達温度（Ｔｐ）２３と油温上昇率２９とから決定してもよい。
Further, the preheating completion notification time (La) 27 may be determined from the maximum temperature reached (Tp) 23 detected by the temperature detection means 4 and the oil
以上のように、精度よい予熱完了の事前報知を行うことが可能となる。 As described above, it is possible to perform advance notification of completion of preheating with high accuracy.
（実施の形態２）
次に、実施の形態２について説明する。実施の形態１と同一部分は説明を省略し、相違点のみ説明を行う。
(Embodiment 2)
Next, a second embodiment will be described. A description of the same parts as those in the first embodiment will be omitted, and only differences will be described.
実施の形態１との相違点は、図１に示す加熱コイル３が発生する高周波電流あるいは高周波電圧と、電源電流との関係から被加熱物１の材質を判別し、その材質に合わせた加熱開始後、所定時間毎に温度検知手段４の出力から油温上昇率２９を求める。
The difference from the first embodiment is that the material of the object to be heated 1 is discriminated from the relationship between the high-frequency current or high-frequency voltage generated by the
そして、設定温度（Ｔａ）２２に到達するまでの間に、被加熱物１の材質毎に決められた所定の温度上昇値を超えると、被加熱物１の温度があらかじめ温まっていたと判定し、設定温度（Ｔａ）２２より低い温度である油温高温スタート設定温度（Ｔｂ）３０に到達した時点で加熱を停止するか、または、加熱を弱める。
And when it reaches the set temperature (Ta) 22 and exceeds a predetermined temperature rise value determined for each material of the
これによって、最高温度到達点（Ａ）２４が、あらかじめ温まっていない被加熱物を加熱した場合に達する温度より高くなることを防ぎ、予熱完了報知時間（Ｌａ）２７の値が所定の設計値から外れずに正しい値となるように制御できるため、被加熱物の加熱開始時の状態に左右されずに、正確な予熱完了の事前報知を行うことが可能となる。 This prevents the maximum temperature reaching point (A) 24 from becoming higher than the temperature reached when the object to be heated is heated in advance, and the value of the preheating completion notification time (La) 27 is reduced from a predetermined design value. Since it can be controlled so as to have a correct value without deviating, it is possible to accurately notify the completion of preheating without being influenced by the state at the start of heating of the object to be heated.
（実施の形態３）
次に、実施の形態３について説明する。実施の形態１と同一部分は説明を省略し、相違点のみ説明を行う。
(Embodiment 3)
Next,
実施の形態１との相違点は、図１に示す加熱コイル３が発生する高周波電流あるいは高周波電圧と、電源電流との関係から被加熱物１の材質を判別し、その材質に合わせた加熱開始後、所定時間毎に前記温度検知手段４の出力から油温上昇率２９を求める。
The difference from the first embodiment is that the material of the object to be heated 1 is discriminated from the relationship between the high-frequency current or high-frequency voltage generated by the
そして、設定温度（Ｔａ）２２に到達点するまでの間に、被加熱物１の材質毎に決められた所定の温度上昇値を下回ると、被加熱物１内に収容された油や調理物の量が所定の量よりも多い状態であると判定し、予熱完了報知時間（Ｌａ）２７を長く変更するため、この被加熱物の内容量に左右されない正確な予熱完了の事前報知を行うことが可能となる。
And if it falls below the predetermined temperature rise value determined for every material of the to-
（実施の形態４）
次に、実施の形態４について説明する。実施の形態１〜３と同一部分は説明を省略し、相違点のみ説明を行う。
(Embodiment 4)
Next, a fourth embodiment will be described. Description of the same parts as those in the first to third embodiments will be omitted, and only differences will be described.
実施の形態１〜３との相違点は、図１示す時間設定手段１１により、図２に示す予熱完了事前報知時間（Ｌｂ）２８を使用者の好みに合わせて変更を行うことで、より使い勝手のよい事前報知を行う誘導加熱調理器を提供することが可能となる。 The difference from the first to third embodiments is that the time setting means 11 shown in FIG. 1 changes the preheating completion prior notification time (Lb) 28 shown in FIG. It is possible to provide an induction heating cooker that performs good prior notification.
（実施の形態５）
次に、実施の形態５について説明する。実施の形態１〜４と同一部分は説明を省略し、相違点のみ説明を行う。
(Embodiment 5)
Next, a fifth embodiment will be described. Description of the same parts as those in the first to fourth embodiments will be omitted, and only differences will be described.
実施の形態１〜４との相違点は、図１示す報知手段１０により、出力される方法を予熱完了の予熱完了事前報知点（Ｂ）では、音声出力や文字表現出力のみとし、予熱完了報知点（Ｃ）と確実に区別ができるようにする。 The difference from the first to fourth embodiments is that the notification means 10 shown in FIG. 1 outputs only the voice output and the character expression output at the preheating completion pre-notification point (B) of the preheating completion, and the preheating completion notification. Make sure that it can be distinguished from the point (C).
例えば、ブザー音や光の点滅表示などは、それ自身では意味を成すものでなく、使用者がそれ専用に学習して区別がつくものであり、誤解を招く恐れがあるため、予熱完了の事前報知では、それ自身だけでは意味を成さない出力を省くことで、予熱完了前に調理を始
めて失敗する危険を回避できる事前報知を行う誘導加熱調理器を提供することが可能となる。
For example, buzzer sounds and flashing lights are not meaningful on their own, but they are specially learned and differentiated by the user, which may lead to misunderstandings. In the notification, it is possible to provide an induction heating cooker that performs prior notification that can avoid the risk of starting and failing before completion of preheating by omitting an output that does not make sense by itself.
以上のように、本発明にかかる加熱調理器は、加熱する鍋の材質、形状、及び油量や加熱開始時の温度や油温の違いによるそれぞれの加熱環境に合わせて予熱完了の報知時間をそれぞれ決定し、その決定された予熱報知時間を元に、ある設定された時間を遡った時点を予熱完了の事前報知点とすることで、様々な加熱環境に応じて精度よく予熱完了の事前報知を行うことができるので、加熱調理器の用途に有効である。 As described above, the cooking device according to the present invention has a notification time of completion of preheating according to each heating environment depending on the material, shape, and amount of oil to be heated, the amount of oil, the temperature at the start of heating, and the oil temperature. Preliminary notification of completion of preheating with high accuracy according to various heating environments by determining each time and using the determined preheating notification time as a prior notification point for completion of preheating based on the determined preheating notification time This is effective for use in a cooking device.
１ 被加熱物
２ トッププレート
３ 加熱コイル
４ 温度検知手段
５ 商用交流電源
６ インバータ回路
７ 制御手段
８ 温度設定手段
９ 表示手段
１０ 報知手段
２１ 油温度
２２ 設定温度（Ｔａ）
２３ 最高到達温度（Ｔｐ）
２４ 最高温度到達点（Ａ）
２５ 予熱完了事前報知点（Ｂ）
２６ 予熱完了報知点（Ｃ）
２７ 予熱完了報知時間（Ｌａ）
２８ 予熱完了事前報知時間（Ｌｂ）
２９ 油温上昇率
３０ 油温高温スタート設定温度（Ｔｂ）
DESCRIPTION OF
23 Maximum temperature (Tp)
24 Maximum temperature reaching point (A)
25 Pre-heating completion prior notification point (B)
26 Preheating completion notification point (C)
27 Preheating completion notification time (La)
28 Pre-warming completion advance notice time (Lb)
29 Oil
Claims (5)
前記制御手段は、所定の加熱出力で加熱を開始し、前記被加熱物の温度が前記設定温度を超えた後、前記被加熱物から熱伝導した油温が前記設定温度を超えた時点で、加熱を停止するか、または、加熱を弱めた後、前記被加熱物の温度が上昇から下降に変化する変曲点である最高温度到達点を求め、前記最高温度到達点の最高到達温度と前記設定温度との差が大きいと、調理を開始できる予熱完了報知点までの予熱完了報知時間を長く、また、逆に小さいと短い時間に変更し、その変更された前記予熱完了報知点からあらかじめ設定された予熱完了事前報知時間を遡った予熱完了事前報知点でブザーや光や音声、画面表示の前記報知手段により予熱完了の事前報知を行う誘導加熱調理器。 Generating a top plate for placing an object to be heated, the object to be heated is magnetically coupled to heating coil, and a resonant circuit having a resonant capacitor which resonates with the heating coil, and, a resonance current to the resonant circuit by turning on and off to a switching element, an inverter supplying power to the resonance circuit from the commercial power source, before Symbol a temperature detecting means for detecting a bottom temperature of the heated object, wherein the temperature detecting means temperature predetermined control temperature obtained from A control means for controlling the heating output of the heating coil by outputting a drive signal of the switching element so as to be, a temperature setting means capable of setting the predetermined control temperature, and setting contents of the temperature setting means are displayed. and a display unit, the temperature setting set set temperature cooking time the buzzer or light or sound that can be started by means more preheating complete screen display Comprising a notification means for notifying, to,
The control means starts heating at a predetermined heating output, and after the temperature of the object to be heated exceeds the set temperature, when the oil temperature thermally conducted from the object to be heated exceeds the set temperature , either stop the heating, or after weakening the heating, the seek maximum temperature point is the inflection point of the temperature of the heated object changes from rising to falling, the highest reached temperature of the maximum temperature point When the difference between the set temperature is large, a long preheating completion notification time until completion of preheating notification point can start cooking, also change to the Most short time small Conversely, preset from the changed the preheating completion notification point induction heating cooker to pre notification of completion of preheating by been preheated completed advance notification time predated completion of preheating prior notification point buzzer or light or sound, screen display of the notification means.
前記材質検知手段により前記被加熱物の材質を判別し、前記被加熱物の材質に合わせた加熱出力で加熱開始後、所定時間毎に前記温度検知手段の出力から温度上昇値を求め、前記設定温度に到達するまでの間に、前記被加熱物の材質毎に決められた所定の温度上昇値を超えると、前記被加熱物の温度があらかじめ温められていたと判定し、前記被加熱物から熱伝導した油温が前記設定温度より低い温度で、加熱を停止するか、または、加熱を弱め、前記最高温度到達点があらかじめ温められていない前記被加熱物を加熱した場合と同じ値となるように制御する請求項１に記載の誘導加熱調理器。 A material detection means for detecting the material of the object to be heated from the relationship between the high-frequency current or high-frequency voltage generated by the heating coil and the power supply current ;
The material of the material of the object to be heated determined by the detection means, obtains the post-start heating by the heating output to match the material of the object to be heated, the temperature rise value from the output of said temperature detecting means at every predetermined time, the setting If a predetermined temperature rise value determined for each material of the object to be heated is exceeded before reaching the temperature, it is determined that the temperature of the object to be heated has been warmed in advance, and heat is generated from the object to be heated. in conducting the oil temperature is a temperature lower than the set temperature, or to stop heating, or weaken the heating, so that the maximum temperature point is the same value as when heating the object to be heated that is not pre-warmed The induction heating cooker of Claim 1 controlled to.
前記材質検知手段により前記被加熱物の材質を判別し、前記被加熱物の材質に合わせた加熱出力で加熱開始後、所定時間毎に温度検知手段の出力から温度上昇値を求め、前記設定温度に到達するまでの間に、前記被加熱物の材質毎に決められた所定の温度上昇値を下まわると、前記被加熱物内に収容された油や調理物の量が所定の量よりも多い状態であると判定し、調理を開始できる前記予熱完了報知点までの時間を前記所定の量の場合より長くする請求項１に記載の誘導加熱調理器。 A material detection means for detecting the material of the object to be heated from the relationship between the high-frequency current or high-frequency voltage generated by the heating coil and the power supply current ;
The material to determine the material of the object to be heated by the detecting means, wherein after the start of heating by the heating output to match the material of the object to be heated, obtains a temperature rise value from the output of the temperature detecting means at every predetermined time, the setting temperature If the temperature rises below a predetermined temperature rise value determined for each material of the object to be heated, the amount of oil or cooked food contained in the object to be heated is less than a predetermined amount. it is determined to be a high state, the induction heating cooker according to the time until the completion of preheating notification point can start cooking in claim 1, longer than the predetermined amount.
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| JP2005100790A (en) * | 2003-09-25 | 2005-04-14 | Hitachi Hometec Ltd | Induction heating cooker |
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