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    • 2. 发明授权
    • Driving circuit for inverter microwave oven
    • 逆变器微波炉驱动电路
    • US5181160A
    • 1993-01-19
    • US733197
    • 1991-07-19
    • Mitsuo OkamotoHirokazu KodamaKouji Minamino
    • Mitsuo OkamotoHirokazu KodamaKouji Minamino
    • F24C7/02H02M3/337H02M7/10H02M7/12H02M7/538H05B6/66
    • H02M3/3378H05B6/66
    • A driving circuit for an inverter microwave oven which includes a push-pull voltage type inverter circuit having two sets of switching element groups each provided with more than two switching elements connected in parallel to each other for switching the D.C. current supplied from a D.C. power source, a control device arranged to set a period for simultaneously turning OFF the two sets of switching element groups and to alternately turn ON the switching element groups by the same duty cycle, a step up transformer supplied, at its primary winding having a center tap, with A.C. current from the inverter circuit, and a voltage doubler rectifier circuit connected to a secondary winding of the step-up transformer for supplying electric power to a magnetron through a capacitor. The driving circuit is set so that one half period of a waveform of current flowing through the switching elements becomes equal to the duty cycle by adjusting the leakage inductance of the step-up transformer, the capacitance value of the capacitor and the circuit resistance of the voltage doubler rectifier circuit or the duty cycle of the switching elements.
    • 一种用于逆变器微波炉的驱动电路,其包括具有两组开关元件组的推挽电压型逆变器电路,每组开关元件组彼此并联连接两个以上的开关元件,用于切换从DC电源提供的DC电流 控制装置,其设置为同时关闭所述两组开关元件组的周期并且交替地以相同的占空比将所述开关元件组导通,在其初级绕组上具有中心抽头的升压变压器, 来自逆变器电路的交流电流,以及连接到升压变压器的次级绕组的倍压整流电路,用于通过电容器向磁控管提供电力。 驱动电路被设定为使得流过开关元件的电流的波形的一半周期通过调节升压变压器的漏电感,电容器的电容值和电路电阻等于占空比 电压倍增器整流电路或开关元件的占空比。
    • 3. 发明申请
    • Cylinder apparatus
    • 气缸装置
    • US20080100002A1
    • 2008-05-01
    • US11902328
    • 2007-09-20
    • Kouji MinaminoShinichi KagawaKazumasa NakagawaYuusuke Maegawa
    • Kouji MinaminoShinichi KagawaKazumasa NakagawaYuusuke Maegawa
    • F02F5/00
    • F15B15/1433F15B15/1461F16F9/36
    • A cylinder apparatus includes a cylinder having a hydraulic fluid sealed therein. A piston rod is connected at one end thereof to a piston slidably fitted in the cylinder. The other end of the piston rod extends to the outside of the cylinder through a seal device provided at the opening end of the cylinder. The seal device has a rod seal and a backup mechanism that presses the rod seal against the piston rod. The backup mechanism has a ring-shaped resilient member provided on the upper surface of a ring-shaped support plate clamped between a rod guide and a seal cap. The ring-shaped resilient member is elastically deformed by an annular tapered wall formed on the seal cap, thereby applying a backup force to the rod seal. Thus, the force with which the rod seal is pressed against the piston rod is kept substantially constant.
    • 气缸装置包括其中密封有液压流体的气缸。 活塞杆的一端连接到可滑动地装配在气缸中的活塞。 活塞杆的另一端通过设置在气缸开口端的密封装置延伸到气缸的外部。 密封装置具有杆密封件和将杆密封件压靠活塞杆的支撑机构。 支撑机构具有设置在夹持在杆引导件和密封帽之间的环形支撑板的上表面上的环形弹性构件。 环形弹性构件通过形成在密封帽上的环形锥形壁弹性变形,从而对杆密封件施加支撑力。 因此,将杆密封件压靠在活塞杆上的力保持基本上恒定。