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1.发明授权
公开(公告)号：US4317975A
公开(公告)日：1982-03-02
申请号：US972881
申请日：1978-12-26
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.
摘要翻译： 使用栅极控制开关器件的感应加热装置包括用于检测高频通电电流的每个过零点的出现的过零点检测器，以及响应于检测到的过零点提供定时动作的定时电路。 定时动作由功率控制电路控制，功率控制电路检测在从门控开关装置的固有关断时间到期望值的范围内传送到负载的能量的水平。
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公开(公告)号：US4145592A
公开(公告)日：1979-03-20
申请号：US749258
申请日：1976-12-10
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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3.发明授权
公开(公告)号：US4147910A
公开(公告)日：1979-04-03
申请号：US803968
申请日：1977-06-06
CPC分类号： G05F1/455
摘要： In an induction heating cooking apparatus, the frequency of electromagnetic energy is varied in response to a desired power setting level within an allowable range and the duty cycle of the energy is varied in response to the setting level while the frequency is set at the lower limit of the allowable range. The combined effects of frequency and duty cycle controls permit the power to vary from as low as 50 watts to as high as 2 kilowatts.
摘要翻译： 在感应加热烹调设备中，电磁能的频率响应期望的功率设定水平而变化，并且能量的占空比响应设定水平而变化，而频率设定在下限 的允许范围。 频率和占空比控制的综合影响允许功率从低至50瓦特变化到高达2千瓦。
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4.发明授权
公开(公告)号：US4074101A
公开(公告)日：1978-02-14
申请号：US657307
申请日：1976-02-11
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 。
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5.发明授权Induction heating apparatus having timing means responsive to temporary removal of cooking implement 失效感应加热装置具有响应于临时移除烹饪器具的定时装置
公开(公告)号：US4129767A
公开(公告)日：1978-12-12
申请号：US818322
申请日：1977-07-22
申请人： Keizo Amagami , Masatatsu Nakamura , Hideyuki Kominami , Kouji Funakoshi , Mitsuyuki Kiuchi , Takumi Mizukawa
发明人： Keizo Amagami , Masatatsu Nakamura , Hideyuki Kominami , Kouji Funakoshi , Mitsuyuki Kiuchi , Takumi Mizukawa
CPC分类号： H05B6/062
摘要： A plurality of switches each is provided in the vicinity of each of a plurality of heater coils of an induction heating apparatus, and responsive to removel of a cooking implement from a corresponding heater coil for being rendered open. A plurality of timers each is connected to each of the switches and causes the heater coil to be de-energized when the cooking implement is kept away from the heater coil for more than a predetermined time period.
摘要翻译： 在感应加热装置的多个加热器线圈的每一个附近设置多个开关，并且响应于来自相应的加热器线圈的烹饪器具的去除而被打开。 多个定时器各自连接到每个开关，并且当烹饪器具远离加热器线圈超过预定时间段时使加热器线圈断电。
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6.发明授权Multiple-load induction heating cooking apparatus with means for eliminating interference between two or more commutation circuits 失效具有用于消除两个或更多个换向电路之间的干扰的装置的多负载感应加热烹饪设备
公开(公告)号：US4092510A
公开(公告)日：1978-05-30
申请号：US732660
申请日：1976-10-15
CPC分类号： H05B6/6488 , H02M7/523 , H02M7/525 , H05B6/062
摘要： A multiple-load induction heating cooking apparatus comprises two or more induction heating commutation circuits each having the junction between its commutating inductor and capacitor manually selectively connected by corresponding one of a plurality of interconnecting switches equal in number to the commutation circuits to form a series-connected LC circuit to a high frequency energy source. The potential at the common point of connection is compared with a reference potential to produce an error signal which is used to control the frequency of the energy source so that the potential at the common point is maintained constant regardless of the magnitude of induction heating loads.
摘要翻译： 多负载感应加热烹饪设备包括两个或更多个感应加热换向电路，每个感应加热换向电路的换向电感器和电容器之间的接点手动地通过与换向电路相等的多个互连开关中的相应一个相互连接， 连接的LC电路到高频能量源。 将公共连接点处的电位与参考电位进行比较，以产生用于控制能量源的频率的误差信号，使得无论感应加热负载的大小如何，公共点处的电位都保持恒定。
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7.发明授权Switching and heat control mechanism for induction heating cooking apparatus having a plurality of work coils 失效具有多种工作线圈的感应加热烹饪装置的开关和热控制机构
公开(公告)号：US4114009A
公开(公告)日：1978-09-12
申请号：US764983
申请日：1977-02-02
CPC分类号： H05B6/1245 , H05B2206/022 , Y02B40/126
摘要： A switching and heat control mechanism for induction heating cooking apparatus having a plurality of induction heating work coils comprises a single control shaft provided with a plurality of contact operating members. A plurality of switch contact units operable by the corresponding contact operating members provide different combinations of open and closed circuit conditions for various points of the apparatus in sequence as the control shaft is rotated. An elevating mechanism, carrying an associated work coil, moves the coil up and down in response to the angle of rotation of the control shaft to form a variable, power level controlling gap between the coil and a load placed on a nonmagnetic cook top.
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公开(公告)号：US4002875A
公开(公告)日：1977-01-11
申请号：US621620
申请日：1975-10-10
CPC分类号： H05B6/6488 , F24C7/02 , H02M7/523 , H03B9/10 , H05B6/681
摘要： A high frequency heating apparatus in which a combination of a microwave oven for heating food through dielectric heating and a cooking device for heating metallic vessel through electrical induction is incorporated to effect efficient cooking and simultaneous formation of brown scorching on the surface of food. In the heating apparatus, power required for the magnetron of the microwave oven and also for the heating coil of the cooking device is supplied through one inverter unit, by which arrangement, an efficient cooking apparatus of compact size is presented.
摘要翻译： 一种高频加热装置，其中结合了通过介电加热加热食物的微波炉和通过电感应加热金属容器的烹饪装置的组合，以实现食品表面上的高效烹饪和同时形成棕色焦烧。 在加热装置中，通过一个逆变器单元供给微波炉的磁控管和烹调装置的加热线圈所需的功率，通过该逆变器单元提供了紧凑尺寸的有效的烹饪设备。
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公开(公告)号：US3978307A
公开(公告)日：1976-08-31
申请号：US596203
申请日：1975-07-15
申请人： Keizo Amagami , Takao Kobayashi , Yoshio Ogino , Mitsuyuki Kiuchi
发明人： Keizo Amagami , Takao Kobayashi , Yoshio Ogino , Mitsuyuki Kiuchi
摘要： An induction heating apparatus is provided with protective circuit arrangements which ensure against surge currents caused by inappropriately timed gating-on of a gate controlled rectifier or by erroneous use of a load material such as non-magnetic or ferro-magnetic material. The timed gating of the gate-controlled rectifier is accomplished by means of a delay circuit which serves to count timing after a rectified excitation potential drops to the zero voltage point. A coincidence circuit is provided to detect coincidence of two signals, one is a pulse having a predetermined width and the other is a signal derived when the periodic cycle of the energization currents departs from the predetermined cycle period.
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公开(公告)号：US4016390A
公开(公告)日：1977-04-05
申请号：US579897
申请日：1975-05-22
申请人： Keizo Amagami , Takao Kobayashi , Yoshio Ogino , Mitsuyuki Kiuchi
发明人： Keizo Amagami , Takao Kobayashi , Yoshio Ogino , Mitsuyuki Kiuchi
摘要： An induction heating apparatus is provided with protective circuit arrangements which ensure against surge currents caused by inappropriately timed gating-on of a gate controlled rectifier or by erroneous use of a load material such as non-magnetic or ferromagnetic material. The timed gating of the gate-controlled rectifier is accomplished by means of a delay circuit which serves to count timing after a rectified excitation potential drops to the zero voltage point. A coincidence circuit is provided to detect coincidence of two signals, one is a pulse having a predetermined width and the other is a signal derived when the periodic cycle of the energization currents departs from the predetermined cycle period.
摘要翻译： 感应加热装置设置有保护电路装置，其确保由于门控整流器的不适当定时门控或者通过错误地使用诸如非磁性或铁磁材料的负载材料而引起的浪涌电流。 门控整流器的定时门控通过延迟电路来实现，该延迟电路用于在整流的激励电位下降到零电压点之后对时序进行计数。 提供符合电路以检测两个信号的一致性，一个是具有预定宽度的脉冲，另一个是当通电电流的周期性周期从预定周期周期开始时导出的信号。
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