专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4638138A High frequency inverter circuit for melting and induction heating 失效
标题翻译：高频变频电路用于熔化和感应加热
公开(公告)号：US4638138A
公开(公告)日：1987-01-20
申请号：US633775
申请日：1984-07-23
申请人： John Rosa , William E. Frank
发明人： John Rosa , William E. Frank
IPC分类号： H02M7/515 , H05B6/04
CPC分类号： H05B6/04 , H02M7/5157
摘要： A two-pole inverter bridge has an inductor mounted between the two controlled switches in each pole and a resonant load is connected across the poles between ends of the inductors which are similarly situated relative to the terminals. In each pole one antiparallel circuit includes an auxiliary controlled switch and another antiparallel circuit includes only a diode. Fault protection is provided with an auxiliary source mounted between opposite ends of the inductors for applying reverse bias to the controlled switches of the poles whenever a fault in the inverter is detected.
摘要翻译：两极逆变桥具有安装在每个极中的两个受控开关之间的电感器，并且谐振负载连接在电感器两端之间的两极之间，其相对于端子类似地定位。在每个极中，反并联电路包括辅助控制开关，另一个反并联电路仅包括二极管。故障保护提供有安装在电感器的相对端之间的辅助源，每当检测到逆变器的故障时，将反向偏压施加到极的受控开关。

2. 发明授权

US4317979A High current high frequency current transformer 失效
标题翻译：大电流高频电流互感器
公开(公告)号：US4317979A
公开(公告)日：1982-03-02
申请号：US154692
申请日：1980-05-30
申请人： William E. Frank , Erwin A. Billman
发明人： William E. Frank , Erwin A. Billman
IPC分类号： H01F38/28 , H05B6/06 , H05B6/10 , H01F40/06
CPC分类号： H05B6/101 , H01F38/28 , H05B6/06
摘要： In an induction heating apparatus, direct sensing of the high frequency high power current flowing in the tank circuit to load the induction coils, is obtained with a coil current measuring transformer comprising one of the power current busses leading to the induction coil and a secondary winding of many ampere-turns wound around said one bus. The bus is given a half-loop shape to accommodate the secondary winding. The secondary winding is made of a magnetic core wound with many turns of Litz wire. Cooling tubes are cemented outside the wound secondary with conductive cement to form a heat sink with a circulation of cooling medium through the tube. The cement is divided in two parts separated by gaps to prevent circulation of induced currents. A cooling tube is installed between the core and wound wire to provide an internal heat sink.
摘要翻译：在感应加热装置中，通过线圈电流测量变压器获得在储能电路中流动以加载感应线圈的高频大功率电流的直接感测，该线圈电流测量变压器包括通向感应线圈的一个电力总线和二次绕组在一辆公共汽车上缠绕许多安培圈。总线被给予半环形以容纳次级绕组。次级绕组由缠绕有许多匝线的磁芯制成。冷却管用导电水泥胶合在缠绕次级外面，以形成具有通过管的冷却介质循环的散热器。水泥分为两部分，间隙分开，以防止感应电流循环。在芯线和绕线之间安装冷却管，以提供内部散热器。

3. 发明授权

US4327268A Current control system for an induction heating apparatus 失效
标题翻译：感应加热装置的电流控制系统
公开(公告)号：US4327268A
公开(公告)日：1982-04-27
申请号：US154691
申请日：1980-05-30
申请人： William E. Frank
发明人： William E. Frank
IPC分类号： H05B6/08
CPC分类号： H05B6/08
摘要： Coil current loading the induction coils of an induction heating apparatus is directly sensed at the input from the tank circuit and the derived feedback current signal is used to control the power supply to the tank circuit be reference to a signal provided manually or automatically under process control. A voltage feedback signal is derived with a transformer from the input to the tank circuit for providing an input to a voltage limiter operative on the current controller when the voltage to the tank circuit exceeds an acceptable limit. A current limiter overrides the current controller to limit the load current by control of the current controller when the load becomes excessive.
摘要翻译：加载感应加热设备的感应线圈的线圈电流在来自储能电路的输入处直接感测，并且导出的反馈电流信号用于控制对电路的电源，参考在过程控制下手动或自动提供的信号。电压反馈信号通过变压器从输入到电路的电路得到，用于当电流到电路的电压超过可接受的极限时向电流控制器提供输入。当负载变得过大时，电流限制器将覆盖电流控制器来限制负载电流。

4. 发明授权

US4471196A Solid state radio frequency power generator 失效
标题翻译：固态射频发电机
公开(公告)号：US4471196A
公开(公告)日：1984-09-11
申请号：US278912
申请日：1981-06-29
申请人： William E. Frank , Chuck F. Der
发明人： William E. Frank , Chuck F. Der
IPC分类号： H02M7/5387 , H05B6/04 , H05B6/06
CPC分类号： H02M7/53871 , H05B6/04 , H02M2001/0009
摘要： A solid state radio frequency high power generator for induction heating applications uses MOSFET devices controlled at radio frequency by a current loop which is automatically corrected against the possible occurrence of a leading phase shift by a voltage-current phase shift detection loop which responds to digital signals corrected against inherent time delays.
摘要翻译：用于感应加热应用的固态射频高功率发生器使用通过电流环控制在射频处的MOSFET器件，该电流回路针对可响应数字信号的电压 - 电流相移检测回路的可能出现的超前相移而被自动校正针对固有的时间延迟进行了修正。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式