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1. 发明公开

EP0092588A4 INDUCTION HEATING INVERTER DEVICE. 失效
标题翻译：切换感应加热器。
公开(公告)号：EP0092588A4
公开(公告)日：1984-04-06
申请号：EP82903256
申请日：1982-11-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MIZUKAWA TAKUMI , OGINO YOSHIO , OHMORI HIDEKI , SATO TAKETOSHI
IPC分类号： H05B6/12 , H05B6/06 , H02M7/00
CPC分类号： H05B6/062

2. 发明公开

EP0069153A4 INDUCTION HEATING COOKING APPARATUS. 失效
标题翻译： INDUKTIV BEHEIZTER KOCHAPPARAT。
公开(公告)号：EP0069153A4
公开(公告)日：1983-06-08
申请号：EP82900143
申请日：1981-12-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OGINO YOSHIO , KOBAYASHI TAKAO , TSUDA YUJI , NISHIMURA HITOSHI
IPC分类号： A47J27/00 , H05B6/06 , H05B6/12
CPC分类号： H05B6/062
摘要： Induction heat cooking apparatus for heating a pan or the like by induction heating. A touch-control key is used as an input unit (14), and the input unit (14) is additionally equipped with a timer function (21) such that the power source is not turned on unless at least two keys are operated correctly within a predetermined interval. In addition, a timer function (29) is provided whose operation is linked to alarm devices (36) and (37), and an alarm is automatically raised in case the pan is misaligned or there is no load. This provides a high safety induction heat cooking apparatus.
摘要翻译：通过感应加热来加热锅等的感应加热烹调装置。触摸控制键被用作输入单元（14），并且输入单元（14）附加地配备有定时器功能（21），使得电源不被打开，除非至少两个键被正确地操作预定的时间间隔。另外，提供了一个定时器功能（29），其操作链接到报警装置（36）和（37），并且在锅未对准或没有负载的情况下，报警会自动提升。这提供了一种高安全感应加热烹饪设备。

3. 发明专利

CA1205869A INVERTER DEVICE FOR INDUCTION HEATING 未知
公开(公告)号：CA1205869A
公开(公告)日：1986-06-10
申请号：CA418502
申请日：1982-12-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MIZUKAWA TAKUMI , OGINO YOSHIO , OHMORI HIDEKI , SATO TAKETOSHI
IPC分类号： H05B6/12 , H05B6/06 , H05B6/04
摘要： This invention relates to an induction heating device making use of a bridge inverter and comprising a DC power source, a plurality of switching elements (6) and (7) forming a bridge inverter, and a circuit for detecting the turn-off of the switching elements (6) and (7). Generally, in the bridge inverter, because of the turn-off time of the switching elements (6) and (7), there is always the danger of the elements being simultaneously rendered conductive and thereby damaged. This invention eliminates this danger and greatly improves the reliability of the device. In the concrete, in order to detect the turn-off of the switching elements (6) and (7), 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.

4. 发明专利

DE3174118D1 INDUCTION HEATING COOKING APPARATUS 未知
公开(公告)号：DE3174118D1
公开(公告)日：1986-04-17
申请号：DE3174118
申请日：1981-12-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OGINO YOSHIO , KOBAYASHI TAKAO , TSUDA YUJI , NISHIMURA HITOSHI
IPC分类号： H05B6/12

5. 发明专利

DE3166155D1 INDUCTION HEATING COOKING APPARATUS 未知
公开(公告)号：DE3166155D1
公开(公告)日：1984-10-25
申请号：DE3166155
申请日：1981-06-15
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MIZUKAWA TAKUMI , AMAGAMI KEIZO , OGINO YOSHIO
IPC分类号： H05B6/06 , H05B6/12
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.

6. 发明专利

FI56913B 未知
公开(公告)号：FI56913B
公开(公告)日：1979-12-31
申请号：FI276672
申请日：1972-10-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： AMAGAMI KEIZO , MORI HAZIME , KOBAYASHI TAKAO , KIUCHI MITSUYUKI , OGINO YOSHIO
IPC分类号： H02M7/523 , H05B6/06 , H05B6/12 , H05B5/08
摘要： 1387470 Induction heated cooking apparatus, inverters MATSUSHITA ELECTRIC INDUSTRIAL CO 26 July 1972 [10 April 1972 (3) 11 April 1972 12 April 1972] 35004/72 Heading H2H and H2F [Also in Division H1] Cooking apparatus comprises a utensil 33 heated by means of an induction heating coil 31 carried below an electrically insulated non- metallic plate 57 the coil 31 being energized by way of an inverter fed from a rectified A.C. source 20, the power delivered to the coil 31 being controlled by an adjustable inductor 34 and all the components of the rectifying-inverting circuit being housed in a metallic screening device 58, 59 to eliminate interference with other electrical apparatus such as a radio. The inverter comprises an A.C. source 20, and a full wave rectifier 28 which produces D.C. on lines 24, 25 by means of which a capacitor 29 is charged when a thyristor 53 is gated on. When the thyristor 35 is gated on, the capactior 29 discharges and charges in an oscillatory fashion by way of an inductor 30 thus providing a high frequency supply for the induction coil 31. When a main switch 21 is closed a thyristor 52 is gated on and a capacitor 50 of a zero volts circuit 45 charges up over a resistor 48. When the capacitor voltage reaches a predetermined level a transistor 49 is triggered on to render the thyristor 52 non-conductive when the voltage thereacross falls to zero. On becoming non- conductive, thyristor 52 causes thyristor 54, and hence thyristor 53, are gated on at zero voltage. Capacitors 29, 26 now charge up, the charging of the capacitor 26 causing thransistors 55, 56 to assume such states that a capacitor 40 charges over a variable resistor 41. At a predetermined capacitor voltage, a device 42 breaks down to gate a pulse amplifier 38 whereby a pulse is produced in the primary winding 37a of a transformer 37, the associated pulse in the secondary winding 37b gating on a thyristor 43. A gating on pulse is then produced for the thyristor 35 whereupon the capacitor 29 discharges and charges in an oscillatory manner at a frequency determined by the parameters of the capacitor 29 and the inductor 30 whereby to energize the induction heating coil 31 at a value determined by the adjustable inductor 34. More than one coil 31 connected in series or in parallel may be energized. In order to eliminate interference with other electrical apparatus all the circuit elements with the exception of the induction heating coil 31 are housed in metal housing 58, 59, one inside the other and insulated from one another by members 61, the electrical connections through the inner housing 58 being provided with condenser bushings 60. The induction heating coil 31 is supported by means of a glass plate 57 at a predetermined distance therefrom and the upper surface of the plate 57 may be provided with an earthed metal foil member whereby the cooking utensil standing on the plate is earthed.

7. 发明专利

AU6254173A INDUCTION HEATING APPARATUS 未知
公开(公告)号：AU6254173A
公开(公告)日：1975-05-15
申请号：AU6254173
申请日：1973-11-15
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： AMAGAMI KEIZO , KABAYASHI TAKAO , OGINO YOSHIO , KIUCHI MITSUYUKI
IPC分类号： H02H7/122 , H02M5/45 , H02M7/523 , H02M7/525 , H05B3/68 , H05B6/06 , H02M7/52 , H02H5/00 , H02H7/12 , H02H7/20 , H02M5/44 , H05B5/04 , H05B5/08

8. 发明专利

DE3379022D1 INDUCTION HEATING APPARATUS UTILIZING OUTPUT ENERGY FOR POWERING SWITCHING OPERATION 未知
公开(公告)号：DE3379022D1
公开(公告)日：1989-02-23
申请号：DE3379022
申请日：1983-08-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OGINO YOSHIO , MIZUKAWA TAKUMI , OHMORI HIDEKI , YOSHIDA HIROKAZU
IPC分类号： H05B6/06 , H05B6/12
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.

9. 发明专利

CA1190287A INDUCTION HEATING COOKING APPLIANCE WITH SAFETY CIRCUITS 未知
公开(公告)号：CA1190287A
公开(公告)日：1985-07-09
申请号：CA396180
申请日：1982-02-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OGINO YOSHIO , KOBAYASHI TAKAO , TSUDA YUJI , NISHIMURA HITOSHI
IPC分类号： H05B6/12
摘要： An induction heating type cooking appliance is adapted to heat a pan by induction heating. An input unit includes touch control keys and has a timer function so that the power supply is turned on only when at least two keys are actuated properly within a given length of time. Alarms are operatively associated with the timer function so as to alert the operator automatically when the pan is shifted or the appliance is operated under a no-load condition. Such an induction heating type cooking appliance therefore enjoys a high degree of safety.

10. 发明专利

FI57034C 未知
公开(公告)号：FI57034C
公开(公告)日：1980-05-12
申请号：FI253372
申请日：1972-09-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： AMAGAMI KEIZO , MORI HAZIME , KOBAYASHI TAKAO , KIUCHI MITSUYUKI , OGINO YOSHIO
IPC分类号： H02H7/122 , H02M5/45 , H02M7/515 , H02M7/523 , H05B6/06 , H05B5/08
摘要： 1370865 Inverting apparatus for induction heating MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 25 July 1972 [10 April 1972 (6)] 34778/72 Headings H2H and H2F An induction heating device such as a cooking apparatus comprises an inverter fed from an A.C. source by way of a full wave rectifier, the heating device being energized by the' output from the inverter, the inverter including a gatecontrolled semi-conductor device and being provided with protective devices to prevent damage thereto which would occur due to current surges at switch-on and to heavy overload currents. Induction heating apparatus comprises a heating coil 35 which co-operates with a cooking utensil 37, the heating coil 35 being energized by an inverter 27 which comprises an inductor 34 and a capacitor 33 forming a resonant circuit which is set into resonance by the firing of a thyristor 29 paralleled by a diode 30 oppositely connected. The inverter 27 is supplied from an A.C. source 20 by way of a main switch 22 and a full wave rectifier 21. Firing of the thyristor 29 is controlled by a pulse generator 38 which generates a train of pulses conditioned by a feed back signal derived by a detector 42 representing the output frequency of the inverter whereby the output frequency of the inverter can be maintained sufficiently constant whatever the output voltage of the rectifier 21. In order to protect the thyristor 29 from a heavy instantaneous current when the inverter is switched on such switching on is arranged to take place when the output voltage of the rectifier 21 is substantially zero. For this purpose a zero voltage switching device 40 is provided which includes a thyristor serially connected in the negative output line 26 of the rectifier. A delay circuit 41 is provided so as to ensure that no pulses are delivered by the pulse generator 38 until the voltage thereacross reaches a predetermined level. Should the current supplied to the load 37 tend to reach an excessive level, a circuit 43 is provided to prevent such an excess current. In other embodiments excessive currents are reduced by using a series connected resistor or a variable inductor in the circuit of the heating coil 35 and heavy initial current flow may be prevented by using a series resistor in the output of the rectifier 21 which resistor is short-circuited by means of a relay during normal operation. The zero-volt switching device 40 may be made responsive to a switch thermally responsive to the heat generated in the load 37. The system is furthermore designed so that the output frequency of the inverter 27 is dependent upon the type of utensil being used.

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