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

US5149929A Microwave oven with inverter controlled power source 失效
标题翻译：带逆变器控制电源的微波炉
公开(公告)号：US5149929A
公开(公告)日：1992-09-22
申请号：US677246
申请日：1991-03-29
申请人： Hiroshi Minakawa , Yoshikazu Kitaguchi , Eiji Fukuda
发明人： Hiroshi Minakawa , Yoshikazu Kitaguchi , Eiji Fukuda
IPC分类号： G05D23/26 , H01J25/50 , H05B6/68
CPC分类号： G05D23/26 , H05B6/666
摘要： A microwave oven with an invertor control power source produces a microwave by the use of the magnetron in relation to the high frequency power generated by the invertor control power source. The heat sensitive ferreit beads provided on the lead wire for transmitting the high frequency power to the magnetron changes the inductance of the wire from the high level to the low level at around a threshold temperature lower than the working equilibrium temperature of the magnetron. The cathode filament current remains within the allowable range, and the moding of the magnetron is prevented. The magnetron can operate in a long life time.

2. 发明授权

US4221949A Abnormal temperature detection and microwave generation suppression in a microwave oven 失效
标题翻译：微波炉中异常的温度检测和微波产生抑制
公开(公告)号：US4221949A
公开(公告)日：1980-09-09
申请号：US911153
申请日：1978-05-31
申请人： Hiroshi Minakawa
发明人： Hiroshi Minakawa
IPC分类号： H05B6/64 , F24C7/02 , H05B6/68 , H05B6/80 , H05B9/06
CPC分类号： H05B6/6432 , H05B6/6411
摘要： A hot air exhaustion opening is formed in an oven wall of a microwave oven. A heat-sensitive film is disposed at the hot air exhaustion opening to close the hot air exhaustion opening when the microwave oven is in the normal operation mode. When the oven cavity temperature rises to an abnormal value, the heat-sensitive film is fused to conduct hot air toward the outside of the microwave oven cavity through the hot air exhaustion opening. A heat-sensitive fuse is disposed on the downstream side of the heat-sensitive filter film so that the heat-sensitive fuse receives the hot air exhausted through the hot air exhaustion opening when the heat-sensitive film is fused. The heat-sensitive fuse is associated with a microwave generation control circuit so that the microwave generation is suppressed when the oven cavity temperature rises to the abnormal value.
摘要翻译：在微波炉的炉壁中形成热空气排出口。当微波炉处于正常运行模式时，将热敏膜设置在热空气排出口处以关闭热空气排出口。当炉腔温度上升到异常值时，热敏膜被熔化，通过热空气排出口将热空气向微波炉腔体的外部传导。热敏保险丝设置在热敏膜的下游侧，使得当热敏膜熔融时，热敏熔丝接收通过热空气排出口排出的热空气。热敏保险丝与微波产生控制电路相关联，使得当炉腔温度升高到异常值时，微波产生被抑制。

3. 发明授权

US5347108A Microwave oven having a function for matching impedance 失效
标题翻译：具有匹配阻抗功能的微波炉
公开(公告)号：US5347108A
公开(公告)日：1994-09-13
申请号：US6959
申请日：1993-01-21
申请人： Hiroshi Minakawa , Masatugu Fukui , Masayuki Uno , Hiroshi Kinoshita
发明人： Hiroshi Minakawa , Masatugu Fukui , Masayuki Uno , Hiroshi Kinoshita
IPC分类号： H05B6/68 , H05B6/74
CPC分类号： H05B6/725 , H05B6/6464 , H05B6/705 , Y02B40/146
摘要： A microwave oven includes a heating chamber, a turntable provided in the oven, a magnetron, a waveguide for guiding the microwave generated by the magnetron into the heating chamber, an electric field sensor provided at the inner wall face of the waveguide or the heating chamber, a metal reflector provided rotatably inside the waveguide for adjusting the impedance of a load at the heating chamber side by its rotation angle, and a circuit responsive to an output of the electric field sensor for controlling the rotation angle of the metal reflector. The control circuit includes a first program for controlling the rotation angle of the metal reflector according to a first method within a predetermined time period from the start of operation of the microwave oven, and a second program for controlling the rotation angle of the metal reflector according to a second method different from the first method after elapse of the predetermined time period. For example, in the first method, the rotation angle of the metal reflector is sequentially controlled so that the output of the electric field sensor is minimum, and in the second method, the rotation angle of the metal reflector is fixed to an average value of the rotation angle of the metal reflector of the first method. The initial rotation angle of the metal reflector is determined so that impedance matching can be obtained when load of approximately 300-500 cc calculated in water load is placed at the center of the heating chamber.
摘要翻译：微波炉包括加热室，设在烤箱中的转台，磁控管，用于将由磁控管产生的微波引导到加热室中的波导，设置在波导管或加热室的内壁面的电场传感器，可旋转地设置在波导内的金属反射器，用于调节加热室侧的负载的阻抗旋转角度，以及响应于电场传感器的输出的电路，用于控制金属反射器的旋转角度。控制电路包括：第一程序，用于根据第一种方法在微波炉的操作开始之后的预定时间段内控制金属反射器的旋转角;以及第二程序，用于控制金属反射器的旋转角度涉及在经过预定时间段之后与第一种方法不同的第二种方法。例如，在第一种方法中，顺序地控制金属反射器的旋转角度，使得电场传感器的输出最小，而在第二种方法中，将金属反射器的旋转角度固定为第一种方法的金属反射器的旋转角度。确定金属反射器的初始旋转角，使得当在水负荷中计算的大约300-500cc的负载放置在加热室的中心时，可以获得阻抗匹配。

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