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1. 发明授权

US4555608A Inverter device for induction heating 失效
标题翻译：变频器用于感应加热
公开(公告)号：US4555608A
公开(公告)日：1985-11-26
申请号：US522373
申请日：1983-07-05
申请人： Takumi Mizukawa , Yoshio Ogino , Hideki Ohmori , Taketoshi Sato
发明人： Takumi Mizukawa , Yoshio Ogino , Hideki Ohmori , Taketoshi Sato
IPC分类号： H05B6/12 , H05B6/06 , H05B6/64
CPC分类号： H05B6/062
摘要： An induction heating device makes use of a bridge inverter and has a DC power source, a plurality of switching elements forming a bridge inverter, and a circuit for detecting the turn-off of the switching elements. In order to detect the turn-off of the switching elements, an improved turn-off detection circuit is employed and an improved control circuit is installed to prevent the circuit from malfunctioning owing to external noise.
摘要翻译： PCT No.PCT / JP82 / 00426 Sec。 371日期：1983年7月5日 102（e）日期1983年7月5日PCT申请日1982年11月2日PCT公布。第WO83 / 01721号公报日本1983年5月11日。感应加热装置利用桥式逆变器，具有DC电源，形成桥式逆变器的多个开关元件和检测开关元件的截止的电路。为了检测开关元件的关断，采用改进的关断检测电路，并且安装改进的控制电路以防止电路由于外部噪声而发生故障。

2. 发明授权

US4595814A Induction heating apparatus utilizing output energy for powering switching operation 失效
标题翻译：感应加热装置利用输出能量为开关动作供电
公开(公告)号：US4595814A
公开(公告)日：1986-06-17
申请号：US524436
申请日：1983-08-18
申请人： Yoshio Ogino , Takumi Mizukawa , Hideki Ohmori , Hirokazu Yoshida
发明人： Yoshio Ogino , Takumi Mizukawa , Hideki Ohmori , Hirokazu Yoshida
IPC分类号： H05B6/06 , H05B6/12
CPC分类号： H05B6/062 , H05B2206/022
摘要： An induction heating apparatus comprises a rectifier (2) for rectifying a voltage from an AC mains supply, a resonance circuit formed by an induction heating coil (4) and a capacitor (4), a semiconductor switching device (6) connected in circuit with the resonance circuit to the output of the rectifier, a diode (7) coupled in anti-parallel relationship with the switching device (6), and a circuit (17; 117, 118) for driving the switching device into conduction at a controlled frequency. Further provided is a transformer (14) which derives a low-frequency energy from the AC mains supply (1). A second coil (9) is electromagnetically coupled with the heating coil (4) for deriving a high-frequency energy. The low- and high-frequency energies are coupled by diodes (10, 11, 15, 16; 132, 133) to the driving circuit to provide power necessary to effect the conduction of the switching device.
摘要翻译：感应加热装置包括整流器（2），用于整流来自AC电源的电压，由感应加热线圈（4）和电容器（4）形成的谐振电路;半导体开关器件（6），其与对整流器的输出端的谐振电路，与开关装置（6）反并联的二极管（7）和用于以受控频率驱动开关装置导通的电路（17; 117,118）。还提供了一种从AC电源（1）导出低频能量的变压器（14）。第二线圈（9）与加热线圈（4）电磁耦合，用于导出高频能量。低频和高频能量由二极管（10,11,15,15,16,132,133）耦合到驱动电路，以提供实现开关器件导通所需的电力。

3. 发明授权

US4446350A Induction heating cooking apparatus 失效
标题翻译：感应加热烹调器
公开(公告)号：US4446350A
公开(公告)日：1984-05-01
申请号：US272032
申请日：1981-06-09
申请人： Takumi Mizukawa , Keizo Amagami , Yoshio Ogino
发明人： Takumi Mizukawa , Keizo Amagami , Yoshio Ogino
IPC分类号： H05B6/06 , H05B6/12 , G08C9/02
CPC分类号： H05B6/062
摘要： An induction heating cooking apparatus includes a pan supporting plate made of a flat sheet of a heat-resistant dielectric material, a heating coil for induction heating disposed below the pan supporting plate, and touch pads each constituting a capacitor-pair formed by first, second and third electrodes. The touch pads when including three pads respectively serves for turning on a power supply, for turning off the power supply, and for setting a power level to a predetermined level. The induction heating or the supply of the power is permitted to take place only when the touch pad is first touched and followed by touching the touch pad. The first electrodes of the touch pads are provided on the upper surface of the pan supporting plate, and are enclosed by guard rings of a conductive material to prevent erroneous operation.
摘要翻译：感应加热烹饪设备包括由耐热介电材料的平板制成的平底锅支撑板，设置在平底锅支撑板下方的用于感应加热的加热线圈，以及各自构成由第一，第二和第三电极。当包括三个焊盘时，触摸板分别用于打开电源，关闭电源以及将功率电平设置到预定水平。感应加热或电源供应仅在首先触摸触摸板并随后触摸触摸板时才能进行。触摸板的第一电极设置在盘支撑板的上表面上，并被导电材料的保护环包围，以防止错误操作。

4. 发明授权

US4234917A Commutation failure detection and restoration for SCR frequency converters 失效
标题翻译： SCR变频器的整流故障检测和恢复
公开(公告)号：US4234917A
公开(公告)日：1980-11-18
申请号：US006114
申请日：1979-01-24
申请人： Yoshiaki Suzuki , Junichi Nakakuki , Takumi Mizukawa , Yoshio Ogino
发明人： Yoshiaki Suzuki , Junichi Nakakuki , Takumi Mizukawa , Yoshio Ogino
IPC分类号： H05B6/12 , H02H7/12 , H02M7/523 , H05B6/06 , H05B5/04
CPC分类号： H05B6/062 , H02H7/12 , H02M7/523
摘要： A frequency converter having a silicon controlled rectifier comprises a protection circuit which includes a series resonant circuit connected in parallel with the silicon controlled rectifier to generate a reverse voltage thereacross in response to a short circuit established in response to a commutation failure of the silicon controlled rectifier. An inhibit circuit is provided to respond to the reverse voltage by inhibiting the current flow through the silicon controlled rectifier to allow the same to restore to its locking state.
摘要翻译：具有可控硅整流器的变频器包括保护电路，该保护电路包括与可控硅整流器并联连接的串联谐振电路，以响应于响应于可控硅整流器的换向故障而建立的短路而产生反向电压。提供禁止电路以通过阻止通过可硅可控整流器的电流来响应反向电压，以使其能够恢复到其锁定状态。

5. 发明授权

US4396818A Thyristor off-time controlled induction heating apparatus by differentiated thyristor anode potential 失效
标题翻译：晶闸管关断时间控制感应加热装置通过差分晶闸管阳极电位
公开(公告)号：US4396818A
公开(公告)日：1983-08-02
申请号：US273415
申请日：1981-06-15
申请人： Hideyuki Kominami , Yoshio Ogino , Takumi Mizukawa , Takao Kobayashi
发明人： Hideyuki Kominami , Yoshio Ogino , Takumi Mizukawa , Takao Kobayashi
IPC分类号： H05B6/12 , H02M7/523 , H05B6/06 , H05B6/08
CPC分类号： H05B6/062 , H02M7/523
摘要： An induction heating apparatus including a thyristor adapted to receive power from a power source, a gating control circuit for generating gating pulses for application to the gating control terminal of the thyristor, a commutating circuit which commutates off the thyristor, and a differentiator connected across the anode and cathode terminals of the thyristor to detect the power consumption of an inductively heated cooking ware. The gating control circuit comprises a gating pulse generator and a smoothing circuit for filtering the signal from the differentiator into a d-c signal which is compared with a reference level to detect the deviation of the power consumption from the reference value. The gating pulse generator is responsive to a potential at the anode of the thyristor to initiate timing action to determine the interpulse period or turn-off time of the thyristor and also responsive to the deviation of power consumption to vary the interpulse period.
摘要翻译：一种感应加热装置，包括适于从电源接收功率的晶闸管，用于产生选通脉冲以用于施加到晶闸管的选通控制端的选通脉冲的选通控制电路，将晶闸管整流的换向电路，以及跨越晶闸管的微分器晶闸管的阳极和阴极端子，以检测感应加热烹饪器具的功耗。选通控制电路包括门控脉冲发生器和平滑电路，用于将来自微分器的信号滤波成与参考电平进行比较的d-c信号，以检测功耗与参考值的偏差。门控脉冲发生器响应于晶闸管的阳极处的电位以启动定时动作以确定晶闸管的脉冲间期或关断时间，并且还响应功率消耗的偏差来改变脉冲间隔。

6. 发明授权

US4281378A Frequency inverter 失效
标题翻译：变频器
公开(公告)号：US4281378A
公开(公告)日：1981-07-28
申请号：US51202
申请日：1979-06-22
申请人： Yoshio Ogino , Takumi Mizukawa , Hirokazu Yoshida
发明人： Yoshio Ogino , Takumi Mizukawa , Hirokazu Yoshida
IPC分类号： H02M5/45 , H02M7/48 , H02M7/515 , H02M7/523 , H02P13/18
CPC分类号： H02M7/523
摘要： A frequency inverter using thyristor(s), wherein a gate circuit produces both positive triggering signals and negative reverse-bias signals by utilizing outputs of the timer in order not to fail turnings of the thyristor, and the timing of both signals are automatically controlled to by synchronized with oscillation of the resonance circuit connected to the anode and the cathode of the thyristor, so as to respond to a change of load condition, so that always suitable triggering signals and reverse-bias signals are applied to the gate of the thyristor.
摘要翻译：一种使用晶闸管的变频器，其中门电路通过利用定时器的输出产生正触发信号和负反向偏置信号，以便不会使晶闸管失效，并且两个信号的定时被自动控制为通过与连接到晶闸管的阳极和阴极的谐振电路的振荡同步，以响应负载条件的变化，使得始终合适的触发信号和反向偏置信号施加到晶闸管的栅极。

7. 发明授权

US4074101A Induction heating apparatus using a pair of inversely parallel connected gate-controlled switching devices 失效
标题翻译：感应加热装置使用一对逆并联的栅极控制开关装置
公开(公告)号：US4074101A
公开(公告)日：1978-02-14
申请号：US657307
申请日：1976-02-11
申请人： Mitsuyuki Kiuchi , Keizo Amagami , Takumi Mizukawa , Hideyuki Kominami
发明人： Mitsuyuki Kiuchi , Keizo Amagami , Takumi Mizukawa , Hideyuki Kominami
IPC分类号： H05B6/12 , H01F30/00 , H02M5/22 , H02M5/27 , H03B9/10 , H05B6/06 , H05B6/10 , H05B6/68 , H05B5/04
CPC分类号： H05B6/1209 , H02M5/22 , H02M5/27 , H03B9/10 , H05B6/062 , H05B6/6488 , Y02B40/123 , Y10S55/36
摘要： An induction heating apparatus comprising a pair of inversely parallel-connected gate-controlled switching devices connected to an alternating current source, a resonant circuit including an induction heating coil and a variable frequency gating circuit for firing the switching devices to generate oscillations through the conducting device and the induction heating coil. The switching devices are gated into conduction in succession in a first order during the positive half cycle of the alternating current and in a reversed order during the negative half cycle. A zero crosspoint detector is provided to inhibit gating when the source voltage is near zero crosspoint level and to control the gating frequency in accordance with the instantaneous value of the source voltage to increase the turn-off time of the switching devices for lower input source voltage.
摘要翻译：一种感应加热装置，包括连接到交流电源的一对逆并联的门控开关装置，包括感应加热线圈的谐振电路和用于点火开关装置以产生通过导电装置的振荡的可变频率选通电路和感应加热线圈。开关器件在交流电的正半周期期间以一级顺序被选通导通，并且在负半周期期间以相反的顺序被选通。提供零交叉点检测器以在源电压接近零交叉点电平时禁止门控，并根据源电压的瞬时值来控制门控频率，以增加用于较低输入电源电压的开关器件的关断时间。

8. 发明授权

US4447691A Circuit for detecting a utensil load placed asymmetrically relative to an induction heating coil 失效
标题翻译：用于检测相对于感应加热线圈非对称放置的器具负载的电路
公开(公告)号：US4447691A
公开(公告)日：1984-05-08
申请号：US173802
申请日：1980-07-30
申请人： Takumi Mizukawa , Keizo Amagami , Takao Kobayashi
发明人： Takumi Mizukawa , Keizo Amagami , Takao Kobayashi
IPC分类号： H05B6/06 , H05B6/12
CPC分类号： H05B6/062 , H05B6/1254 , Y02B40/126 , Y10S99/14
摘要： A plurality of magnetic field sensors are mounted adjacent the periphery of an induction heating coil of flat, spiral configuration which is energized by ultrasonic frequency energy to generate a time-varying magnetic field. The magnetic field sensors are connected in a ciruit to produce an output signal when a magnetic utensil load is placed asymmetrically with respect to the center of the induction heating coil. In response to sensor output exceeding a predetermined value a warning indication is provided. The ultrasonic energy level is reduced in response to the warning indication to minimize radio interference which would otherwise occur due to leakage magnetic flux.
摘要翻译：多个磁场传感器安装在平面螺旋结构的感应加热线圈的周边附近，该感应加热线圈由超声频率能量激发以产生时变磁场。当磁性器具负载相对于感应加热线圈的中心非对称地放置时，磁场传感器以电路连接以产生输出信号。响应于超过预定值的传感器输出，提供警告指示。超声波能量响应于警告指示而减小，以最小化否则由于漏磁通而发生的无线电干扰。

9. 发明授权

US4356371A Small load detection by comparison between input and output parameters of an induction heat cooking apparatus 失效
标题翻译：通过比较感应加热烹饪设备的输入和输出参数来进行小负载检测
公开(公告)号：US4356371A
公开(公告)日：1982-10-26
申请号：US205861
申请日：1980-11-10
申请人： Mitsuyuki Kiuchi , Takumi Mizukawa , Hideyuki Kominami , Kenji Hattori
发明人： Mitsuyuki Kiuchi , Takumi Mizukawa , Hideyuki Kominami , Kenji Hattori
IPC分类号： H05B6/06 , H05B6/08 , H05B6/12
CPC分类号： H05B6/062 , H05B2213/05
摘要： An induction heat cooking apparatus includes an inverter which generates ultrasonic frequency energy for heating a magnetic load by induction, and a small load detection circuit. The detection circuit includes a comparator which compares the input and output parameters of the inverter and latches a bistable device when the input power is smaller than the output parameter. The bistable device shuts down the inverter to prevent inadvertently placed small utensil objects from being excessively heated.
摘要翻译：一种感应加热烹饪设备包括：通过感应产生用于加热磁性负载的超声频率能量的逆变器和小负载检测电路。检测电路包括比较器，当输入功率小于输出参数时，比较反相器的输入和输出参数并锁存双稳态器件。双稳态装置关闭变频器，防止意外放置的小器具物体过热。

10. 发明授权

US4145592A Induction heating apparatus with means for detecting zero crossing point of high-frequency oscillation to determine triggering time 失效
公开(公告)号：US4145592A
公开(公告)日：1979-03-20
申请号：US749258
申请日：1976-12-10
申请人： Takumi Mizukawa , Keizo Amagami , Mitsuyuki Kiuchi , Hirokazu Yoshida , Tatsuo Saka
发明人： Takumi Mizukawa , Keizo Amagami , Mitsuyuki Kiuchi , Hirokazu Yoshida , Tatsuo Saka
IPC分类号： H05B6/12 , G05F1/45 , H02M1/08 , H02M5/27 , H05B6/06 , H05B5/04
CPC分类号： H05B6/062 , G05F1/45 , H02M1/08 , H02M5/27
摘要： Induction heating apparatus using gate-controlled switching devices includes a zero crossing point detector for detecting the occurrence of each zero crossing point of high frequency energization current, and a timing circuit which provides timing action in response to the detected zero crossing point. The timing action is controlled by a power control circuit which detects the level of energy delivered to a load within a range from the inherent turn-off time of the gate-controlled switching devices to a desired value.

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