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公开(公告)号：US4303816A
公开(公告)日：1981-12-01
申请号：US112679
申请日：1980-01-16
申请人： Gerhard Goessler , Friedrich Koch
发明人： Gerhard Goessler , Friedrich Koch
IPC分类号： A47J27/62 , G05D23/275 , H05B6/06 , H05B6/12 , H05B5/04
CPC分类号： H05B6/062 , A47J27/62 , G05D23/1905 , G05D23/275 , H05B2213/07 , Y10S336/02
摘要： A cooker apparatus for heating a cooking pot inductively comprises an induction heating coil and a control device for controlling the heating power. The control device has a temperature-dependent guiding and control means and a sensor unit, adapted to be positioned on the cooking pot and subjected there to the evolution of steam in the cooking pot. The sensor unit is arranged to transmit control signals to the guiding and control means.
摘要翻译： 用于感应地加热烹饪锅的炊具装置包括感应加热线圈和用于控制加热功率的控制装置。 控制装置具有温度依赖的导向和控制装置和传感器单元，适于定位在烹饪锅上并经受烹饪锅中蒸汽的演变。 传感器单元布置成将控制信号传送到引导和控制装置。
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2.发明授权
公开(公告)号：US4206336A
公开(公告)日：1980-06-03
申请号：US813799
申请日：1977-07-08
申请人： Ronald J. Cunningham
发明人： Ronald J. Cunningham
CPC分类号： H05B6/062 , F24C7/087 , G05B19/108 , G05B2219/23138 , G05B2219/23378
摘要： A cooking surface serving as a cook top or stove for use in cooking food can be constructed utilizing a glass support member. In the disclosed structure an induction heating coil is mounted on the undersurface of the support member. An electrically powered graphic display is also mounted on the undersurface of the support member so that this display is visible from above the support member. The support member also carries the parts of two different touch controls which are responsive to the presence of a part of a hand of an individual so as to provide an output signal. What may be referred to as an "electronic package" for controlling the operation of the coil and of the graphic display in synchronism with one another is connected to the parts of the touch controls mounted on the support member and is connected to both the coil and the graphic display. The touch controls can be individually operated so as to either increase or decrease the amount of current supplied to the coil. At all times the graphic display indicates the relative amount of current supplied to the coil and, hence, the heating potential of the coil. Additional touch controls can be provided for preventing accidental and/or unintentional operation of the coil.
摘要翻译： 可以利用玻璃支撑构件来构造用作烹饪食物的烹饪台或灶的烹饪面。 在所公开的结构中，感应加热线圈安装在支撑构件的下表面上。 电动图形显示器也安装在支撑构件的下表面上，使得该显示器从支撑构件的上方可见。 支撑构件还承载响应于个体的一部分手的存在的两个不同的触摸控件的部分，以便提供输出信号。 用于控制线圈和图形显示器的操作的“电子封装”可以彼此同步地连接到安装在支撑构件上的触摸控制部分，并且连接到线圈和 图形显示。 可以单独操作触摸控制，以便增加或减少提供给线圈的电流量。 在任何时候，图形显示表示提供给线圈的电流的相对量，因此表示线圈的加热电位。 可以提供额外的触摸控制以防止线圈的意外和/或无意的操作。
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公开(公告)号：US4189685A
公开(公告)日：1980-02-19
申请号：US886378
申请日：1978-03-14
申请人： James D. Doss
发明人： James D. Doss
CPC分类号： A61N1/08 , A61B18/1206 , H03L1/00
摘要： A transistor oscillator circuit wherein the load current applied to animal tissue treatment electrodes is fed back to the transistor. Removal of load is sensed to automatically remove feedback and stop oscillations. A thermistor on one treatment electrode senses temperature, and by means of a control circuit controls oscillator transistor current.
摘要翻译： 晶体管振荡器电路，其中施加到动物组织处理电极的负载电流被反馈到晶体管。 检测到负载的去除以自动消除反馈并停止振荡。 一个处理电极上的热敏电阻感测温度，并且通过控制电路控制振荡器晶体管电流。
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4.发明授权Apparatus and method for case hardening steel tools by application of heating pulses 失效通过应用加热脉冲加工钢铁工具的装置和方法
公开(公告)号：US4109127A
公开(公告)日：1978-08-22
申请号：US661165
申请日：1976-02-25
申请人： Frank Frungel
发明人： Frank Frungel
CPC分类号： C21D1/10 , Y02P10/253
摘要： A high frequency oscillator is pulsed on and off to create at least a first and second pulse to be applied by inductive heating to a steel tool which has not previously been heat treated. The pulse width, amplitude and interval between pulses are adjusted for a given alloy and then kept constant during the production run. A Hartley oscillator with a frequency above 10 MHz is utilized and the pulses have pulse widths of less than 100 milliseconds.
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5.发明授权Induction heating apparatus using a saturable reactor for power control purposes 失效感应加热装置使用可饱和电抗器进行功率控制
公开(公告)号：US4055740A
公开(公告)日：1977-10-25
申请号：US666973
申请日：1976-03-15
CPC分类号： H05B6/06 , H02M7/523 , H01F2038/003
摘要： An induction heating apparatus includes a saturable reactor having a pair of rectangular ferrite cores. An air gap is provided in each ferrite core to provide a gradually increasing saturation characteristic on the magnetization curve of the cores. A pair of series-connected load windings is coiled around each core and a control winding is coiled around a common magnetic path of the cores. A power control circuit produces a DC control current that passes through the control winding. The high frequency energization current is passed through the load windings. Means are provided to control the DC control current at a desired setting. Preferably, the actual power level is detected to control the DC current through a feedback loop.
摘要翻译： 感应加热装置包括具有一对矩形铁氧体磁芯的可饱和电抗器。 在每个铁氧体磁芯中提供气隙以在磁芯的磁化曲线上提供逐渐增加的饱和特性。 一对串联的负载绕组围绕每个磁芯卷绕，并且控制绕组围绕磁芯的公共磁路卷绕。 功率控制电路产生通过控制绕组的直流控制电流。 高频通电电流通过负载绕组。 提供装置以在期望的设置下控制DC控制电流。 优选地，检测实际功率电平以控制通过反馈回路的直流电流。
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6.发明授权Induction heating apparatus with means for improving the dv/dt capability of a silicon-controlled rectifier used therein 失效感应加热装置，其具有用于提高其中使用的可控硅整流器的dv / dt能力的装置
公开(公告)号：US4016391A
公开(公告)日：1977-04-05
申请号：US586621
申请日：1975-06-13
申请人： Mitsuyuki Kiuchi , Takumi Mizukawa
发明人： Mitsuyuki Kiuchi , Takumi Mizukawa
摘要： A gate controlled thyrister (SCR) used for switching at high frequency for induction heating is supplied with a negative bias during an interval ranging from the point where the forward current reaches to zero to the time of reapplication of a subsequent gating signal. This provides high dv/dt (the rate of rise of anode voltage) capability and small turn off time to the device.
摘要翻译： 在从正向电流达到零的点到再次施加后续的门控信号的时间间隔内，用于感应加热的高频切换的门控可控硅（SCR）被提供负偏压。 这提供了高dv / dt（阳极电压的上升率）能力和对器件的小的关断时间。
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7.发明授权Induction cooking unit having cooking load sensing device and essentially zero stand-by power loss 失效具有烹饪负载感应装置的诱导烹饪单元和基本的零点电力损失
公开(公告)号：US4013859A
公开(公告)日：1977-03-22
申请号：US583662
申请日：1975-06-04
CPC分类号： H05B6/062
摘要： An induction heating unit is provided having an essentially zero stand-by power requirement and comprised by a high power solid-state inverter for supplying relatively high frequency excitation currents to an induction heating coil, and including inhibit, delay, and starting and stopping gating circuits to control the operation of the high frequency power inverter. An induction heating load sensing device senses the presence of a load such as a pan or other metal base cookware located in induction heating relationship with respect to the induction heating coil. The pan presence sensing device comprises a very low power oscillator coupled to a load sensing coil for exciting the load sensing coil with high frequency oscillatory signals which preferably are in the range of two to three times the frequency at which the power inverter operates. The load sensing coil is physically positioned adjacent the induction heating coil in a location to provide inductive coupling of the high frequency sensing signal to a pan load suitably supported near the induction heating coil. The pan load sensing coil is designed to minimize the effect of inductive coupling to the induction heating coil, and for this purpose is provided with a multiple loop figure-eight or cloverleaf shape so designed and positioned that currents induced in the loops of the sensing coil by the magnetic field of the induction heating coil null one another at the terminals of the sensing coil. A load sensing detector responds to the magnitude of the high frequency voltage across the pan load sensing coil and controls the operation of the gating circuits of the power inverter in a load-selective manner to cause turn-on of the power inverter only in the presence of a proper pan load.
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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：US3973105A
公开(公告)日：1976-08-03
申请号：US514782
申请日：1974-10-15
申请人： Akihiro Tsumori
发明人： Akihiro Tsumori
CPC分类号： H05B6/062 , H05B6/1254 , Y02B40/126
摘要： A protective device for an induction heating apparatus comprising: means for detecting a change of value and phase of a current passed to an excitor for induction-heating a heating element by generating an alternating magnetic field; and means for breaking the current passed to the excitor when the change is higher than a predetermined value.
摘要翻译： 一种用于感应加热设备的保护装置，包括：用于检测通过产生交变磁场而传递到用于感应加热加热元件的激励器的电流的值和相位变化的装置; 以及当所述变化高于预定值时，用于断开传递到所述激励器的电流的装置。
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公开(公告)号：US3955061A
公开(公告)日：1976-05-04
申请号：US494788
申请日：1974-08-05
申请人： Kenneth E. Roehrman
发明人： Kenneth E. Roehrman
CPC分类号： H02J3/14 , Y02B70/3225 , Y04S20/222 , Y10T307/484
摘要： This disclosure describes power distribution with the use of semiconductor switches. A digital differential analyzer (DDA) selectively switches integer cycles of a generator into a load demand determined by analog sensing located at the work station associated with the load.
摘要翻译： 本公开描述了使用半导体开关的功率分配。 数字差分分析仪（DDA）有选择地将发生器的整数周期转换为由位于与负载相关联的工作站的模拟感测确定的负载需求。
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