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71. 发明专利

JP2004057101A High-frequency thawing device 审中-公开
公开(公告)号：JP2004057101A
公开(公告)日：2004-02-26
申请号：JP2002220988
申请日：2002-07-30
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： YASUI KENJI , NOBUE TOMOTAKA , ASADA KAZUHIKO , YOSHINO KOJI
IPC分类号： H05B6/48 , A23L3/365
摘要： PROBLEM TO BE SOLVED: To provide a high-frequency thawing device miniaturized as a whole through miniaturizing a variable inductor for a matching circuit.
SOLUTION: The high-frequency thawing device is such one that a conductor constituting the variable inductor 150 is spirally wound on an identical plane, a winding means 170 is provided on the outer terminal, winding wires are wound by said means 170, and thereby the number of turns of the variable inductor 150 and the area of the winding wires are altered to make inductance levels variable, thus miniaturizing the profile of the variable inductor 150.
COPYRIGHT: (C)2004,JPO

72. 发明专利

JP2003347036A Power source for driving magnetron 审中-公开
标题翻译：用于驱动磁铁的电源
公开(公告)号：JP2003347036A
公开(公告)日：2003-12-05
申请号：JP2002148706
申请日：2002-05-23
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： YASUI KENJI , KITAIZUMI TAKESHI
IPC分类号： H05B6/66 , H05B6/68
摘要： PROBLEM TO BE SOLVED: To arrange a power supply in a control circuit of an inverter circuit so as to be simple and reduce loss.
SOLUTION: Auxiliary winding is installed in a step-up transformer in the inverter circuit, the coupling coefficients of first winding, second winding, and the auxiliary winding are set so as to be similar, and even if the inverter circuit varies conversion power, the power source of the control circuit is stabilized.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：将逆变器电路的控制电路中的电源布置为简单并减少损耗。
解决方案：辅助绕组安装在逆变器电路中的升压变压器中，第一绕组，第二绕组和辅助绕组的耦合系数设置为相似，即使逆变器电路变化转换电源，控制电路的电源稳定。版权所有（C）2004，JPO

73. 发明专利

JP2003307318A High frequency heating power source device 审中-公开
标题翻译：高频加热电源装置
公开(公告)号：JP2003307318A
公开(公告)日：2003-10-31
申请号：JP2002111704
申请日：2002-04-15
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： MORIYA HIDEAKI , SAKAI SHINICHI , YASUI KENJI , KITAIZUMI TAKESHI
IPC分类号： H05B6/64 , F24C7/02
摘要： PROBLEM TO BE SOLVED: To improve cooling performance, and to reduce weight, noise, a space by miniaturization and integration of a magnetron, a power source device, and a cooling system, in a high frequency heating power source device for driving the magnetron such as a microwave oven.
SOLUTION: The magnetron 8, a magnetron driving power source device (separated into a high voltage part 22 and a low voltage part 23), and the cooling system 19 for cooling these two heating elements are maximally adjacently integrated, and are constituted in a cylindrical shape by a covering case 24. This constitution can wholly pass a cooling wind 17 obtained from the cooling system 19 through the inside of a cylinder, and can serviceably cool the magnetron driving power source device and the magnetron 8, and can improve the cooling performance. An empty space 26 can be formed by the further integrated constitution, and a space of a complicated machine room can be reduced to produce the merits of assembling facility, manhours reduction, weight reduction, and noise reduction at manufacturing time.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：在用于驱动的高频加热电源装置中，通过磁控管，电源装置和冷却系统的小型化和集成来提高冷却性能，减轻重量，噪声，空间磁控管如微波炉。解决方案：磁控管8，磁控管驱动电源装置（分离为高电压部分22和低电压部分23）和用于冷却这两个加热元件的冷却系统19最大程度地相互整合，构成通过覆盖壳体24形成圆筒状。该结构可以将从冷却系统19获得的冷却风17完全通过汽缸内部，并且可以有效地冷却磁控管驱动电源装置和磁控管8，并且可以改善冷却性能。可以通过进一步的一体化构造形成空的空间26，并且可以减少复杂机房的空间，以在制造时产生组装设备，减少工时，减轻重量和降低噪音的优点。版权所有（C）2004，JPO

74. 发明专利

JP2003272825A Power supply device for microwave oven 审中-公开
标题翻译：用于微波炉的电源装置
公开(公告)号：JP2003272825A
公开(公告)日：2003-09-26
申请号：JP2002067105
申请日：2002-03-12
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KITAIZUMI TAKESHI , YASUI KENJI , MIHARA MAKOTO
IPC分类号： F24C7/02 , H01J23/34 , H02M1/42 , H02M7/00 , H05B6/66
CPC分类号： H02M1/425 , H02M7/003 , H02M7/48 , H05B6/66 , Y02B70/126
摘要： PROBLEM TO BE SOLVED: To provide a power supply device for a microwave oven of which, size, weight, and cost are reduced by using a small-sized radiation fin having a power semiconductor device whose cooling efficiency is enhanced.
SOLUTION: For the power supply device for the microwave oven, having a base plate on which, a rectifying circuit, a choke coil, an inverter, an inverter control circuit, and a step-up transformer are mounted; a hole element H is arranged to the choke coil 30 having a space at its core part, and power semiconductor devices P1, P2 are directly fixed to the heat radiation fin 61 by soldering. A square-shaped core 27 made of metal, formed into square-shape by winding a lengthwise metal plate into plural turns, of which, an inner diameter of the square shape is larger than the outer diameter of either of the primary winding and the secondary winding, and the other inner diameter of the square shape is larger than the piled height of the primary winding and the secondary winding, is arranged so as to face the ferrite core 26 while being inserted toward the rod-shaped ferrite core 26 from the outside of a primary winding and a secondary winding of the choke coil interposing a gap G.
COPYRIGHT: (C)2003,JPO
摘要翻译：解决的问题：提供一种通过使用具有提高冷却效率的功率半导体装置的小型散热片来减小尺寸，重量和成本的微波炉的电源装置。
解决方案：用于微波炉的电源装置，其上安装有基板，整流电路，扼流线圈，逆变器，逆变器控制电路和升压变压器; 孔元件H布置在其芯部具有空间的扼流线圈30上，并且功率半导体器件P1，P2通过焊接直接固定到散热片61。由金属制成的方形芯27，通过将纵向金属板卷绕成多圈，形成为正方形，其中，正方形的内径大于初级绕组和次级的任何一个的外径绕组，并且正方形的另一个内径大于初级绕组和次级绕组的堆叠高度，被布置成面向铁氧体磁芯26同时从外部向杆状铁氧体磁芯26插入的扼流圈的初级绕组和次级绕组插入间隙G.版权所有（C）2003，JPO

75. 发明专利

JP2003257612A POWER SUPPLY FOR DRIVING MAGNETRON 审中-公开
公开(公告)号：JP2003257612A
公开(公告)日：2003-09-12
申请号：JP2002055600
申请日：2002-03-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KITAIZUMI TAKESHI , YASUI KENJI
IPC分类号： H05B6/68
摘要： PROBLEM TO BE SOLVED: To provide a power supply for driving a magnetron capable of suppressing a high harmonic wave current. SOLUTION: This power supply for driving the magnetron is composed of a commercial power supply, a primary rectification means for rectifying commercial power supply, a first capacitor connected with the primary rectification means, a high voltage transformer connected with the first capacitor and provided with a secondary rectification means and the magnetron on a secondary side, a series body of a first semiconductor switch and a second semiconductor switch whose connection is connected with the high voltage transformer, and a second capacitor connected with the series body of the first and second semiconductor switches in parallel. A voltage of the second capacitor is controlled to realize the power supply for driving the magnetron capable of reducing high harmonic wave component of an input current and operating at a high power factor. COPYRIGHT: (C)2003,JPO

76. 发明专利

JP2003115370A HIGH FREQUENCY HEATING EQUIPMENT 审中-公开
公开(公告)号：JP2003115370A
公开(公告)日：2003-04-18
申请号：JP2001309614
申请日：2001-10-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ISHIO YOSHIAKI , YASUI KENJI , KITAIZUMI TAKESHI , SUENAGA HARUO
IPC分类号： H05B6/68 , H02M7/48 , H05B6/66
摘要： PROBLEM TO BE SOLVED: To suppress fall of the power factor of an inverter circuit power supply by lessening distortion of the input current waveform, which originates at the time of change of the power supply voltage, in the high frequency heating equipment. SOLUTION: It has a booster transformer 30, which supplies high-voltage electric power to a magnetron 24, an inverter circuit 22, which rectifies the commercial electric power supply 21, and changes it into alternate current of a predetermined frequency to supply it to the booster transformer 30, and an output setting means 23. The inverter circuit 22 has a modulation part 27, a driving part 28, and a semiconductor switching element 29, and the modulation part 27 generates a modulation signal from a power supply voltage waveform detection means 25, which detects the voltage waveform of the commercial power supply 21, from which the inverter circuit 22 obtains electric power, a power supply voltage level detection means 26 to detect the voltage value of the commercial power supply 21, and the output setting means 23. The driving part 28 is made to have a composition, which determines a pulse signal for driving the semiconductor switching element 29 based on the modulation signal of the modulation part 27.

77. 发明专利

JP2002110337A POWER SUPPLY FOR DRIVING MAGNETRON 失效
公开(公告)号：JP2002110337A
公开(公告)日：2002-04-12
申请号：JP2000293824
申请日：2000-09-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YASUI KENJI , KITAIZUMI TAKESHI , ISHIO YOSHIAKI , OMORI HIDEKI , SAKAMOTO KAZUHO , MIHARA MAKOTO , SUENAGA HARUO , MORIYA HIDEAKI , ISHIZAKI EMIKO
IPC分类号： H05B6/66 , H02M7/48 , H05B6/68
摘要： PROBLEM TO BE SOLVED: To reduce an input current distortion generated by a nonlinear voltage- current characteristic of a magnetron, and improve power conversion efficiency, power factor and higher harmonic wave performance. SOLUTION: A series circuit of semiconductor switching elements 20 and 21, a series circuit of diodes 22 and 23, and a series circuit of the first and the second capacitors 24 and 25 are connected in parallel, a series circuit of a commercial power 1 and a high-voltage transformer 26 is connected between a connecting point of diodes 24, 25 and a connecting point of semiconductor switching elements 20, 21, a high-voltage output of the high-voltage transformer 26 can flow an input current almost over the whole commercial power by supplying power to a magnetron through a high-voltage rectification circuit, with less distortion. Also a boosting operation and an inverter operation are made all at once by an on-off operation of the semiconductor switching elements 20 and 21, a process of power conversion is reduced, switching loss of the diodes 22 and 23 is reduced at the same time, and a power conversion efficiency is improved.

78. 发明专利

JP2001257069A HIGH FREQUENCY HEATING DEVICE 失效
公开(公告)号：JP2001257069A
公开(公告)日：2001-09-21
申请号：JP2000064893
申请日：2000-03-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YASUI KENJI , BETSUSOU DAISUKE , MOROZUMI HIDEKI
IPC分类号： H05B6/68
摘要： PROBLEM TO BE SOLVED: To prevent the deterioration of life of magnetron by being stabilized in a state of moding oscillation at the time of transition from start up to the normal operation when a direct current is made an input power source in a high frequency heating device. SOLUTION: A moding oscillation detecting part 13 detects the magnetron making moding oscillation and stops or restarts the inverter circuit 2 based on this information. By having this structure, the moding oscillation detecting part 13 can prevent the magnetron 11 from continuing moding oscillation, and so it can realize a high frequency heating device using a direct current power source without damaging the life of magnetron.

79. 发明专利

JP2000184754A MAGNETRON DRIVER 失效
公开(公告)号：JP2000184754A
公开(公告)日：2000-06-30
申请号：JP35752998
申请日：1998-12-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAI SHINICHI , SUENAGA HARUO , ISHIO YOSHIAKI , BETSUSOU DAISUKE , YASUI KENJI
IPC分类号： H02M7/538 , H05B6/66
摘要： PROBLEM TO BE SOLVED: To assure a withstand voltage of a rectifying means connected to a secondary side of a leakage transformer in a power converter for a magnetron driver. SOLUTION: To eliminate an excess voltage generated when a magnetron 9 is started in a rectifying means 8 connected to a secondary winding side of a leakage transformer 2, a peak voltage is suppressed by using a comparison calculator 13 for comparing a voltage divided by two resistors 10, 11 provided between a connecting point of the transformer 2 to a third capacitor 3 and a DC power source 1 with a specified reference voltage, and hence a withstand voltage of an element used for the rectifier can be lowered.

80. 发明专利

JPH11214144A HIGH TENSION DRIVE CIRCUIT 失效
公开(公告)号：JPH11214144A
公开(公告)日：1999-08-06
申请号：JP936498
申请日：1998-01-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SUENAGA HARUO , MIHARA MAKOTO , BETSUSOU DAISUKE , ISHIO YOSHIAKI , YASUI KENJI
IPC分类号： H05B6/66 , H02M1/08
摘要： PROBLEM TO BE SOLVED: To provide a high tension drive circuit capable of accurately transmitting a switching control pulse to a switching element positioned at a high potential with a simple configuration. SOLUTION: A switching control pulse 2 of a voltage signal output by a control circuit 1 is converted into a current pulse signal 5 by a high tension transistor circuit 4, and the current pulse signal 5 is converted again into a drive pulse which is a voltage signal in a drive circuit 5 to output it to a switching element 9. A high potential difference between the control circuit 1 and the drive circuit 6 and the switching element 9 is insulated by a high tension transistor 11 in the high tension transistor circuit 4, and the current pulse signal 5 transmits the information of the switching control pulse 2 to the drive circuit 6 being insulated. This configuration is simpler than a case of using a photocoupler or a pulse transformer and has a high performance.

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