JP4981607B2 - Induction heating cooker - Google Patents
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- JP4981607B2 JP4981607B2 JP2007259884A JP2007259884A JP4981607B2 JP 4981607 B2 JP4981607 B2 JP 4981607B2 JP 2007259884 A JP2007259884 A JP 2007259884A JP 2007259884 A JP2007259884 A JP 2007259884A JP 4981607 B2 JP4981607 B2 JP 4981607B2
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- 238000010438 heat treatment Methods 0.000 title claims description 76
- 230000006698 induction Effects 0.000 title claims description 36
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000005855 radiation Effects 0.000 claims description 4
- 230000005684 electric field Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 26
- 239000003990 capacitor Substances 0.000 description 15
- 238000010411 cooking Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 2
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Description
この発明は電波式リモコン装置を備えた遠隔操作が可能な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 equipped with a radio remote controller and capable of remote operation.
近年、熱源を電力、都市ガスおよびＬＰガスとする加熱調理機器の火力コントロールをマイコン、ＩＣなどを利用した電子制御で行う機器が一般化してきている。 2. Description of the Related Art In recent years, devices that perform electronic control using a microcomputer, IC, etc., for heating power control of cooking devices that use electric power, city gas, and LP gas as heat sources have become common.
中でも、電磁誘導の原理を利用した加熱調理機器が、火を使用しないことから安全面で評価され、今後も広範に普及していくものと考えられている。しかし、この電磁誘導の原理を利用した加熱調理機器、即ち、誘導加熱調理器は内部で高周波を使用しているため、電波の放射電力を強くしなければならず、電波式リモコン装置の電池の消耗が大きいという課題がある。 Above all, cooking equipment using the principle of electromagnetic induction is evaluated in terms of safety because it does not use fire, and it is thought that it will be widely used in the future. However, since the cooking device using this principle of electromagnetic induction, that is, the induction heating cooker uses a high frequency internally, the radiated power of the radio wave must be increased, and the battery of the radio remote control device There is a problem that consumption is large.
この課題を解決するため、リモコン信号で制御される誘導加熱調理器本体の設定温度を遠隔制御するリモコン装置を備え、リモコン信号には電波を用いて、誘導加熱調理器本体がリモコン装置からのリモコン信号を受け取った場合、応答信号を発する誘導加熱調理器において、この誘導加熱調理器からの応答信号の中に入れられている符号にて信号強度が十分高いことを検知した場合には、リモコン信号を送信するときの電波放射電力を小さくし、リモコン装置の電池の消耗を必要最小限に抑えるように構成された誘導加熱調理器が提案されている（例えば、特許文献１参照）。 In order to solve this problem, a remote control device for remotely controlling a set temperature of the induction heating cooker body controlled by a remote control signal is provided, and the induction heating cooker body uses a radio wave as a remote control signal so that the induction heating cooker body can be remotely controlled from the remote control device. When receiving a signal, in the induction heating cooker that issues a response signal, if it is detected that the signal strength is sufficiently high by the code entered in the response signal from the induction heating cooker, a remote control signal An induction heating cooker has been proposed that is configured to reduce radio wave radiated power when transmitting and minimize the consumption of the battery of the remote control device (see, for example, Patent Document 1).
しかしながら、上記特許文献１に開示された技術は、誘導加熱調理器からの応答信号の強度が大きい際は電池の消耗を少なくすることができるが、リモコン装置が誘導加熱調理器本体から遠くにあり、誘導加熱調理器からの応答信号の強度が小さい際には電池の消耗を少なくすることができない課題を有している。 However, the technique disclosed in Patent Document 1 can reduce battery consumption when the strength of the response signal from the induction heating cooker is large, but the remote control device is far from the induction heating cooker body. When the intensity of the response signal from the induction heating cooker is small, there is a problem that battery consumption cannot be reduced.
この発明は、上記課題を解決するためになされたもので、リモコン装置が誘導加熱調理器本体から遠く離れていても、リモコン装置の電池の消耗を少なくすることができる誘導加熱調理器を提供するものである。 The present invention has been made to solve the above problems, and provides an induction heating cooker that can reduce battery consumption of the remote control device even when the remote control device is far away from the induction heating cooker body. Is.
この発明に係る誘導加熱調理器は、電波信号を遠隔制御するリモコン装置により制御する誘導加熱調理器において、加熱コイルと、上記加熱コイルに高周波電流を発生させるインバータ回路と、上記インバータ回路に商用電圧の整流電圧を供給する整流手段と、上記
リモコン装置との間で上記電波信号の送受信を行う送受信部と、を備え、上記送受信部は、所定の間隔で上記電波信号の放射を行うとともに、上記リモコン装置は、上記送受信部から送信された上記電波信号の受信タイミングを基に商用電圧のゼロクロス近傍を検知し、上記リモコン装置と上記送受信部との間の上記電波信号の放射を商用電圧のゼロクロス近傍で行うようにしたものである。
An induction heating cooker according to the present invention is an induction heating cooker controlled by a remote control device that remotely controls a radio wave signal, a heating coil, an inverter circuit that generates a high-frequency current in the heating coil, and a commercial voltage in the inverter circuit Rectifying means for supplying a rectified voltage of
A transmission / reception unit that transmits / receives the radio signal to / from the remote control device, the transmission / reception unit radiates the radio signal at a predetermined interval, and the remote control device is transmitted from the transmission / reception unit. detecting the zero cross proximity of the commercial voltage based on the received timing of the radio signal, in which to perform zero-crossing near the radiating commercial voltage of the radio signal between the remote controller and the transceiver.
この発明による誘導加熱調理器は、リモコン装置と誘導加熱調理器に設けられた送受信部との間の電波信号の放射を商用電圧のゼロクロス近傍で行うので、電波信号の放射電力を小さくすることが可能となり、リモコン装置の電池の消耗を少なくすることができる Since the induction heating cooker according to the present invention radiates the radio signal between the remote control device and the transmission / reception unit provided in the induction heating cooker in the vicinity of the zero cross of the commercial voltage, the radiation power of the radio signal can be reduced. It is possible to reduce the battery consumption of the remote control device
以下、この発明に係る誘導加熱調理器の好適な実施の形態について、図面を参照して説明する。なお、この実施の形態によってこの発明が限定されるものではない。 Hereinafter, a preferred embodiment of an induction heating cooker according to the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.
実施の形態１．
図１は実施の形態１に係る誘導加熱調理器のブロック構成図である。図１において、商用電源入力部１から入力された商用電圧は、整流手段２、直流の制御電圧を生成する制御電圧生成手段３、及び商用電圧のゼロクロスを検出する商用電圧ゼロクロス検出手段４に供給される。
Embodiment 1 FIG.
FIG. 1 is a block configuration diagram of the induction heating cooker according to the first embodiment. In FIG. 1, the commercial voltage input from the commercial power input unit 1 is supplied to the rectifier 2, the control voltage generator 3 that generates a DC control voltage, and the commercial voltage zero cross detector 4 that detects the zero cross of the commercial voltage. Is done.
整流手段２は、ダイオードブリッジ２１、力率コンデンサ２２、整流ブリッジ２１と力率コンデンサ２２との間に接続されるチョークコイル２３とを備えている。整流手段２によって整流された商用電圧は、加熱コイル５に高周波電流を発生させるインバータ回路６に供給される。 The rectifier 2 includes a diode bridge 21, a power factor capacitor 22, and a choke coil 23 connected between the rectifier bridge 21 and the power factor capacitor 22. The commercial voltage rectified by the rectifying means 2 is supplied to an inverter circuit 6 that causes the heating coil 5 to generate a high-frequency current.
インバータ回路６は、直列に接続されたスイッチング素子６１、６２、スイッチング素子６２の低電位側に接続された共振コンデンサ６３、スイッチング素子６２と並列に接続されたスナバコンデンサ６４とから構成される。また、加熱コイル５はスイッチング素子６１とスイッチング素子６２の接続点と、共振コンデンサ６３との間に接続される。 The inverter circuit 6 includes switching elements 61 and 62 connected in series, a resonance capacitor 63 connected to the low potential side of the switching element 62, and a snubber capacitor 64 connected in parallel with the switching element 62. The heating coil 5 is connected between a connection point between the switching element 61 and the switching element 62 and the resonance capacitor 63.
制御電圧生成手段３で生成された直流の制御電圧は制御手段７へ供給される。制御手段７は本体操作部８からの信号、あるいは本体送受信部９で受信したリモコン装置１０からの信号に応じて、インバータ回路６を制御し、加熱コイル５に流れる高周波電流を調節する。この加熱コイル５に流れる高周波電流の大きさによって負荷への加熱量が変化する。 The direct-current control voltage generated by the control voltage generation unit 3 is supplied to the control unit 7. The control means 7 controls the inverter circuit 6 according to a signal from the main body operation unit 8 or a signal from the remote control device 10 received by the main body transmission / reception unit 9 to adjust the high-frequency current flowing through the heating coil 5. The amount of heating to the load varies depending on the magnitude of the high-frequency current flowing through the heating coil 5.
ゼロクロス検出手段４は、フォトカプラ４１、ダイオード４２、電流制限抵抗４３、及びプルアップ抵抗４４とから構成される。そして、プルアップ抵抗４４とフォトカプラ４１の接続点の電圧を制御手段７へ出力する。このゼロクロス検出手段４の出力は図２に示すように商用電圧が正であるときはＬレベル、商用電圧が負である時はＨレベルとなり、ＬレベルからＨレベルの切り替わりと、ＨレベルからＬレベルへの切り替わりが商用電圧のゼロクロスとなる。 The zero cross detection means 4 includes a photocoupler 41, a diode 42, a current limiting resistor 43, and a pull-up resistor 44. Then, the voltage at the connection point between the pull-up resistor 44 and the photocoupler 41 is output to the control means 7. As shown in FIG. 2, the output of the zero cross detecting means 4 is L level when the commercial voltage is positive, H level when the commercial voltage is negative, and switching from L level to H level and from H level to L level. Switching to the level becomes the zero cross of the commercial voltage.
本体送受信部９は負荷の加熱量や負荷の温度情報等をリモコン装置１０へ送信する。送信する電波信号の放射は商用電圧のゼロクロス近傍で行う。また、リモコン装置１０は使用者が操作した内容を本体送受信部９へ送信する。送信する電波信号の放射は商用電圧のゼロクロス近傍で行う。ここで、リモコン装置１０は内部クロック（図示せず）を有しており、本体送受信部９から送信された電波信号の受信タイミングから商用電圧のゼロクロス近傍を判断することができる。すなわち、商用電圧が５０Ｈｚである場合は受信タイミングから１０ｍｓごとに商用電圧のゼロクロスタイミングとなり、商用電圧が６０Ｈｚである場合は受信タイミングから８．３ｍｓごとに商用電圧のゼロクロスタイミングとなる。このように、本体送受信部９が所定の間隔で電波信号の放射を行うことにより、リモコン装置１０に商用電圧のゼロクロスを知らせることができる。なお、その他、リモコン装置１０の制御方法はすでに概知であるので詳しい説明は省略する。 The main body transmitting / receiving unit 9 transmits the heating amount of the load, the temperature information of the load, and the like to the remote control device 10. Radiation of the radio signal to be transmitted is performed near the zero cross of the commercial voltage. Further, the remote control device 10 transmits the content operated by the user to the main body transmission / reception unit 9. Radiation of the radio signal to be transmitted is performed near the zero cross of the commercial voltage. Here, the remote control device 10 has an internal clock (not shown), and can determine the vicinity of the zero cross of the commercial voltage from the reception timing of the radio wave signal transmitted from the main body transmission / reception unit 9. That is, when the commercial voltage is 50 Hz, the commercial voltage zero-cross timing comes every 10 ms from the reception timing, and when the commercial voltage is 60 Hz, the commercial voltage zero-cross timing comes every 8.3 ms from the reception timing. As described above, the main body transmission / reception unit 9 emits the radio wave signal at a predetermined interval, whereby the remote control device 10 can be notified of the zero cross of the commercial voltage. In addition, since the control method of the remote control apparatus 10 is already known, detailed description is abbreviate | omitted.
図３と図４は商用電圧と整流手段２によって整流された整流電圧と加熱コイル５に流れる高周波電流を示す図である。図３は加熱量が小さい時であり、図４は加熱量が大きい時である。加熱コイル５に流れる高周波電流は整流手段２によって整流された整流電圧が大きいほど大きくなる。なお、この加熱コイル５の制御方法はすでに概知であるので詳しい説明はここでは省略する。 3 and 4 are diagrams showing the commercial voltage, the rectified voltage rectified by the rectifying means 2, and the high-frequency current flowing through the heating coil 5. FIG. FIG. 3 shows a time when the heating amount is small, and FIG. 4 shows a time when the heating amount is large. The high-frequency current flowing through the heating coil 5 increases as the rectified voltage rectified by the rectifying means 2 increases. In addition, since the control method of this heating coil 5 is already known, detailed description is abbreviate | omitted here.
整流手段２によって整流された整流電圧は加熱量が小さい時には平滑されているが、加熱量が大きい時には商用電圧の位相に同期して変動する。これは加熱量が大きい時は力率コンデンサ２２から出力される高周波電流が整流ブリッジ２１とチョークコイル２３を経由して商用電源入力部１から供給される電流よりも大きいためである。 The rectified voltage rectified by the rectifying means 2 is smoothed when the heating amount is small, but fluctuates in synchronization with the phase of the commercial voltage when the heating amount is large. This is because when the heating amount is large, the high-frequency current output from the power factor capacitor 22 is larger than the current supplied from the commercial power input unit 1 via the rectifier bridge 21 and the choke coil 23.
加熱コイル５に流れる電流は加熱量が大きい時には数十ｋＨｚの高周波のピーク値が整流電圧の大きさに比例して変動する波形となる。また、加熱量が小さい時には整流電圧が平滑されているため数十ｋＨｚの高周波波形となる。数十ｋＨｚの高周波電流の周波数はインバータ回路６を構成するスイッチング素子６１、６２のスイッチングタイミングによって決定される。ここで、インバータ回路６と整流手段２の構成は本実施の形態に限られたものでは無く、商用電圧のゼロクロス時に加熱コイル５に流れる高周波電流が小さくなるようなものであればよい。 The current flowing through the heating coil 5 has a waveform in which the peak value of a high frequency of several tens kHz varies in proportion to the magnitude of the rectified voltage when the heating amount is large. Further, when the heating amount is small, the rectified voltage is smoothed, so that a high frequency waveform of several tens of kHz is obtained. The frequency of the high frequency current of several tens of kHz is determined by the switching timing of the switching elements 61 and 62 constituting the inverter circuit 6. Here, the configurations of the inverter circuit 6 and the rectifying means 2 are not limited to those of the present embodiment, and any configuration may be used as long as the high-frequency current flowing through the heating coil 5 is reduced at the time of zero crossing of the commercial voltage.
このように、加熱量が小さい時の高周波のピーク値は加熱量が大きい時に比べて小さく、加熱量が大きい時は商用電圧のゼロクロス近傍ではピーク値が小さいため、本体送受信部９とリモコン装置１０の送信する電波信号の放射電力を小さくしても、加熱コイル５に流れる高周波電流に妨害されることがなく電波信号を送受信することが可能となる。 Thus, the peak value of the high frequency when the heating amount is small is smaller than that when the heating amount is large, and when the heating amount is large, the peak value is small in the vicinity of the zero cross of the commercial voltage. Even if the radiated power of the radio signal transmitted by is reduced, the radio signal can be transmitted and received without being disturbed by the high-frequency current flowing through the heating coil 5.
以上説明したように、実施の形態１に係る誘導加熱調理器は、本体送受信部９とリモコン装置１０の間で送受信される電波信号の放射タイミングを加熱コイル５に流れる高周波電流が小さくなる商用電圧のゼロクロス近傍で行うことによって、電波信号の放射電力を小さくすることができるため、リモコン装置１０の電池の消耗を小さくすることが可能となる。 As described above, the induction heating cooker according to the first embodiment is a commercial voltage in which the high-frequency current flowing through the heating coil 5 is reduced in the emission timing of the radio wave signal transmitted and received between the main body transmission / reception unit 9 and the remote control device 10. By performing in the vicinity of the zero cross, it is possible to reduce the radiated power of the radio signal, so that the battery consumption of the remote control device 10 can be reduced.
実施の形態２．
次に、実施の形態２について説明する。図５は実施の形態２に係る誘導加熱調理器のブロック構成図である。実施の形態２と実施の形態１との違いは、実施の形態２では商用電圧ゼロクロス検出手段４が、商用電圧絶対値検出手段１１と比較手段１２に置き換わった点である。その他の構成は実施の形態１と同様であるため、説明は省略する。
Embodiment 2. FIG.
Next, a second embodiment will be described. FIG. 5 is a block configuration diagram of the induction heating cooker according to the second embodiment. The difference between the second embodiment and the first embodiment is that, in the second embodiment , the commercial voltage zero cross detection means 4 is replaced with the commercial voltage absolute value detection means 11 and the comparison means 12. Since other configurations are the same as those of the first embodiment, description thereof is omitted.
また、実施の形態１の誘導加熱調理器では、本体送受信部９とリモコン装置１０の間で送受信される電波信号の放射タイミングを商用電圧のゼロクロス近傍で行っていたが、実施の形態２の誘導加熱調理器では、電波信号の放射のタイミングを商用電圧の絶対値が所定の値以下となった時に行うものである。以下、図５と図６を参照しながら、これを詳細に説明する。 Further, in the induction heating cooker of the first embodiment, the emission timing of the radio signal transmitted / received between the main body transmission / reception unit 9 and the remote control device 10 is performed in the vicinity of the zero cross of the commercial voltage. In the heating cooker, the timing of radiating the radio signal is performed when the absolute value of the commercial voltage falls below a predetermined value. Hereinafter, this will be described in detail with reference to FIGS.
図５において、商用電圧絶対値検出手段１１は、商用電圧を整流するダイオードブリッジ１３と、ダイオードブリッジ１３の出力側に接続される分圧抵抗１４と検出抵抗１７の直列接続体と、検出抵抗１７に並列に接続されるノイズ除去コンデンサ１６とで構成される。 In FIG. 5, the commercial voltage absolute value detection means 11 includes a diode bridge 13 that rectifies the commercial voltage, a series connection body of a voltage dividing resistor 14 and a detection resistor 17 connected to the output side of the diode bridge 13, and a detection resistor 17. And a noise removal capacitor 16 connected in parallel.
比較手段１２は比較器１８と２つの比較抵抗１５、１５とで構成される。２つの比較抵抗１５、１５の接続点が比較器１８の非反転入力ピンに接続され、検出抵抗１７と分圧抵抗１４の接続点が比較器１８の反転入力ピンに接続される。比較器１８の出力は制御手段７へ出力される。 The comparison means 12 includes a comparator 18 and two comparison resistors 15 and 15. The connection point between the two comparison resistors 15 and 15 is connected to the non-inverting input pin of the comparator 18, and the connection point between the detection resistor 17 and the voltage dividing resistor 14 is connected to the inverting input pin of the comparator 18. The output of the comparator 18 is output to the control means 7.
図６は商用電圧、検出抵抗１７の両端の電圧（商用電圧絶対値検出手段１１の出力電圧）、及び比較器１８の出力電圧（比較手段１２の出力電圧）を示している。商用電圧を整流した電圧を分圧抵抗１４と検出抵抗１７の比で分圧した電圧が検出抵抗１７の両端の電圧に発生する。比較器１８の出力電圧は検出抵抗１７の両端の電圧が２つの比較抵抗１５、１５の分圧電圧よりも低いときにＨレベルを出力し、高いときにＬレベルを出力する。この比較器１８の出力がＨレベルのときに本体送受信部９は負荷の加熱量や負荷の温度情報等をリモコン装置１０へ送信する。なお、本体送受信部９が所定の間隔で電波信号の放射を行うことにより、リモコン装置１０に商用電圧の絶対値が所定値以下となったことを知らせることができる。 FIG. 6 shows the commercial voltage, the voltage across the detection resistor 17 (the output voltage of the commercial voltage absolute value detection means 11), and the output voltage of the comparator 18 (the output voltage of the comparison means 12). A voltage obtained by dividing the voltage obtained by rectifying the commercial voltage by the ratio of the voltage dividing resistor 14 and the detecting resistor 17 is generated as a voltage at both ends of the detecting resistor 17. The output voltage of the comparator 18 outputs an H level when the voltage across the detection resistor 17 is lower than the divided voltage of the two comparison resistors 15 and 15, and outputs an L level when the voltage is high. When the output of the comparator 18 is at the H level, the main body transmission / reception unit 9 transmits the heating amount of the load, temperature information of the load, and the like to the remote control device 10. The main body transmitting / receiving unit 9 emits radio signals at predetermined intervals, so that the remote control device 10 can be notified that the absolute value of the commercial voltage has become equal to or less than the predetermined value.
図６に示すように、比較器１８の出力がＨレベルになるのは商用電圧のゼロクロス近傍となる。ゼロクロス近傍の範囲は分圧抵抗１４と検出抵抗１７と比較抵抗１５の値によって決定される。例えば、比較抵抗１５の分圧電圧を０．５Ｖ、分圧抵抗１４と検出抵抗１７の抵抗比を９９：１とすると、商用電圧が５０Ｖ以下となる時に比較器１８の出力がＨレベルとなる。この比較器１８の出力がＨレベルとなる商用電圧絶対値はこの電圧値での加熱コイル５に流れる電流が、加熱量が大きい場合においても電波の受信に影響を及ぼさないように設定している。当然のことながら、本実施の形態のような値以外でも加熱コイル５に流れる電流が電波の受信に影響を及ぼさないように、分圧抵抗１４と検出抵抗１７と比較抵抗１５の値を設定すればよい。 As shown in FIG. 6, the output of the comparator 18 becomes H level near the zero cross of the commercial voltage. The range near the zero cross is determined by the values of the voltage dividing resistor 14, the detection resistor 17, and the comparison resistor 15. For example, if the divided voltage of the comparison resistor 15 is 0.5 V and the resistance ratio of the voltage dividing resistor 14 and the detection resistor 17 is 99: 1, the output of the comparator 18 becomes H level when the commercial voltage is 50 V or less. . The commercial voltage absolute value at which the output of the comparator 18 becomes H level is set so that the current flowing through the heating coil 5 at this voltage value does not affect the reception of radio waves even when the heating amount is large. . Naturally, the values of the voltage dividing resistor 14, the detection resistor 17, and the comparison resistor 15 are set so that the current flowing through the heating coil 5 does not affect the reception of the radio wave other than the values in the present embodiment. That's fine.
以上説明したように、実施の形態２に係る誘導加熱調理器は、本体送受信部９とリモコン装置１０の間で送受信される電波信号の放射タイミングを、加熱コイル５に流れる高周波電流が小さくなる商用電圧のゼロクロス近傍で行うことによって、電波信号の放射電力を小さくすることができるため、リモコン装置１０の電池の消耗を小さくすることが可能となる。 As described above, the induction heating cooker according to the second embodiment uses a commercial signal in which the high-frequency current flowing through the heating coil 5 is reduced in the emission timing of the radio wave signal transmitted and received between the main body transmission / reception unit 9 and the remote control device 10. By performing in the vicinity of the zero cross of the voltage, the radiated power of the radio signal can be reduced, so that the battery consumption of the remote control device 10 can be reduced.
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３と実施の形態１、あるいは実施の形態２との違いは、リモコン装置１０に商用電圧検出手段を有する点である。
図７は商用電圧検出手段３０の構成図である。電極３１にフィルタ抵抗３２が接続され、フィルタ抵抗３２に検出抵抗３３、フィルタコンデンサ３４、及び増幅器３５が接続される。
Embodiment 3 FIG.
Next, Embodiment 3 will be described. The difference between the third embodiment and the first embodiment or the second embodiment is that the remote control device 10 has a commercial voltage detecting means.
FIG. 7 is a block diagram of the commercial voltage detection means 30. A filter resistor 32 is connected to the electrode 31, and a detection resistor 33, a filter capacitor 34, and an amplifier 35 are connected to the filter resistor 32.
一般的に誘導加熱調理器が設置される屋内には商用電源の送電線が通っており、商用電源の供給を受けて動作する家電機器等が使用されている。そのため、屋内には商用電圧周波数の電界が微弱ではあるが発生している。電極３１はそれを受信するためのものである。電極３１で受信され、フィルタ抵抗３３とフィルタコンデンサ３４の直列接続間に発生した電圧はフィルタ抵抗３２とフィルタコンデンサ３４によって高周波部分をフィルタリングされる。このフィルタリングされた電圧が高インピーダンスの検出抵抗３３の両端に発生し、増幅器３５に入力される。 In general, a transmission line of a commercial power supply passes through an indoor room where an induction heating cooker is installed, and home appliances that operate by receiving the supply of commercial power are used. For this reason, an electric field having a commercial voltage frequency is generated indoors although it is weak. The electrode 31 is for receiving it. The voltage received between the electrodes 31 and generated between the series connection of the filter resistor 33 and the filter capacitor 34 is filtered at a high frequency portion by the filter resistor 32 and the filter capacitor 34. This filtered voltage is generated across the high impedance detection resistor 33 and input to the amplifier 35.
増幅器３５の出力には商用電圧と同期した電圧が発生する。この商用電圧と同期した電圧を実施の形態１で示したゼロクロス検出手段４に入力し、ゼロクロス検出手段４の出力がリモコン装置１０に出力される。 A voltage synchronized with the commercial voltage is generated at the output of the amplifier 35. A voltage synchronized with the commercial voltage is input to the zero-cross detection unit 4 described in the first embodiment, and the output of the zero-cross detection unit 4 is output to the remote control device 10.
リモコン装置１０は実施の形態１あるいは実施の形態２では本体送受信部９から受信する電波のタイミングから商用電圧のゼロクロス近傍を検知していたが、実施の形態３のような構成とすることにより、リモコン装置１０は独立して商用電圧のゼロクロスタイミングを知ることができる。なお、その他の構成は実施の形態１あるいは実施の形態２と同様なので説明は省略する。 The remote control device 10 detects the vicinity of the zero cross of the commercial voltage from the timing of the radio wave received from the main body transmission / reception unit 9 in the first embodiment or the second embodiment, but by adopting the configuration as in the third embodiment, The remote control device 10 can know the zero cross timing of the commercial voltage independently. Since other configurations are the same as those in the first embodiment or the second embodiment, description thereof is omitted.
以上説明したように、実施の形態３に係る誘導加熱調理器は、本体送受信部９とリモコン装置１０の間で送受信される電波信号の放射タイミングを加熱コイル５に流れる高周波電流が小さくなる商用電圧のゼロクロス近傍で行うことによって、電波信号の放射電力を小さくすることができるためリモコン装置１０の電池の消耗を小さくすること事が可能となる。 As described above, the induction heating cooker according to the third embodiment is a commercial voltage in which the high-frequency current flowing through the heating coil 5 is reduced in the emission timing of the radio wave signal transmitted and received between the main body transmission / reception unit 9 and the remote control device 10. By performing in the vicinity of the zero cross, it is possible to reduce the radiated power of the radio signal, so that the battery consumption of the remote control device 10 can be reduced.
この発明は、電波式リモコン装置を備えた遠隔操作が可能な誘導加熱調理器に利用できる。 The present invention can be used for an induction heating cooker that is equipped with a radio remote controller and can be operated remotely.
１ 商用電源入力部
２ 整流手段
３ 制御電圧生成手段
４ 商用電圧ゼロクロス検出手段
５ 加熱コイル
６ インバータ回路
７ 制御手段
８ 本体操作部
９ 本体送受信部
１０ リモコン装置
１１ 商用電圧絶対値検出手段
１２ 比較手段
１３ ダイオードブリッジ
１４ 分圧抵抗
１５ 比較抵抗
１６ ノイズ除去コンデンサ
１７ 検出抵抗
１８ 比較器
２１ ダイオードブリッジ
２２ 力率コンデンサ
２３ チョークコイル
３０ 商用電圧検出手段
３１ 電極
３２ フィルタ抵抗
３３ 検出抵抗
３４ フィルタコンデンサ
３５ 増幅器
４１ フォトカプラ
４２ ダイオード
４３ 電流制限抵抗
４４ プルアップ抵抗
６１、６２ スイッチング素子
６３ 共振コンデンサ
６４ スナバコンデンサ
DESCRIPTION OF SYMBOLS 1 Commercial power input part 2 Rectification means 3 Control voltage generation means 4 Commercial voltage zero cross detection means 5 Heating coil 6 Inverter circuit 7 Control means 8 Main body operation part 9 Main body transmission / reception part 10 Remote control device 11 Commercial voltage absolute value detection means 12 Comparison means 13 Diode bridge 14 Voltage dividing resistor 15 Comparison resistor 16 Noise removal capacitor 17 Detection resistor 18 Comparator 21 Diode bridge 22 Power factor capacitor 23 Choke coil 30 Commercial voltage detection means 31 Electrode 32 Filter resistor 33 Detection resistor 34 Filter capacitor 35 Amplifier 41 Photocoupler 42 Diode 43 Current limiting resistor 44 Pull-up resistors 61 and 62 Switching element 63 Resonant capacitor 64 Snubber capacitor
Claims (2)
加熱コイルと、上記加熱コイルに高周波電流を発生させるインバータ回路と、上記インバータ回路に商用電圧の整流電圧を供給する整流手段と、上記リモコン装置との間で上記電波信号の送受信を行う送受信部と、を備え、
上記送受信部は、所定の間隔で上記電波信号の放射を行うとともに、上記リモコン装置は、上記送受信部から送信された上記電波信号の受信タイミングを基に商用電圧のゼロクロス近傍を検知し、上記リモコン装置と上記送受信部との間の上記電波信号の放射を商用電圧のゼロクロス近傍で行うことを特徴とする誘導加熱調理器。 In an induction heating cooker controlled by a remote control device that remotely controls radio signals,
A heating coil; an inverter circuit that generates a high-frequency current in the heating coil; a rectifying unit that supplies a rectified voltage of a commercial voltage to the inverter circuit; and a transmission / reception unit that transmits / receives the radio signal to / from the remote control device; With
The transmitter / receiver radiates the radio signal at a predetermined interval, and the remote controller detects the vicinity of a zero cross of a commercial voltage based on the reception timing of the radio signal transmitted from the transmitter / receiver. devices and induction heating cooker, which comprises carrying out at near zero cross of the commercial voltage radiation of the radio signal between the transmitting and receiving unit.
加熱コイルと、上記加熱コイルに高周波電流を発生させるインバータ回路と、上記インバータ回路に商用電圧の整流電圧を供給する整流手段と、上記リモコン装置との間で上記電波信号の送受信を行う送受信部と、を備え、
上記リモコン装置は、該リモコン装置内部に有する電極で商用電圧の電界を検知することにより商用電圧のゼロクロス近傍を検知し、上記リモコン装置と上記送受信部との間の上記電波信号の放射を商用電圧のゼロクロス近傍で行うことを特徴とする誘導加熱調理器。 In an induction heating cooker controlled by a remote control device that remotely controls radio signals,
A heating coil, an inverter circuit for generating a high-frequency current to the heating coil, transmitting and receiving unit for performing a rectifying means for supplying a rectified voltage of the commercial voltage to the inverter circuit, the transmission and reception of the radio signal between the upper Symbol remote control device And comprising
The remote control device detects the vicinity of the zero cross of the commercial voltage by detecting an electric field of the commercial voltage with an electrode included in the remote control device, and radiates the radio wave signal between the remote control device and the transmission / reception unit. An induction heating cooker characterized by being performed in the vicinity of the zero cross.
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| JP2016018775A (en) * | 2014-07-10 | 2016-02-01 | キム カンスＫｉｍ Ｋａｎｇ Ｓｕ | Jump induction under-range |
| JP6328572B2 (en) * | 2015-01-22 | 2018-05-23 | 三菱電機株式会社 | Induction heating cooker with non-contact power feeding function and control method thereof |
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| JP6360093B2 (en) * | 2016-03-28 | 2018-07-18 | 三菱電機株式会社 | Induction heating cooker and non-contact power supply system |
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