发明名称 |
Electronic control for an appliance |
摘要 |
An electronic control for a motor which eliminates the motor centrifugal switch and more particularly a control for a domestic refuse compactor which permits the user to control the approximate full trash bag weight and obtain more compaction from a split phase induction drive motor. A ferrite core sensor on the main winding of the drive motor samples the lagging phase angle of the motor main winding current during a compaction stroke. A low force cycle is achieved by terminating the stroke as soon as phase samples fall below a threshold defined at the start of each cycle by a locked motor main winding phase sample acquired prior to starting the motor. A medium force cycle terminates the stroke when compaction forces exceed the main winding breakdown torque. A high force cycle is achieved by re-activating a motor start winding when compaction forces exceed the main winding breakdown torque and terminating the stroke as soon as the phase samples exceed a threshold defined at the start of each cycle during motor starting. The control uses programmed referencing techniques to eliminate factory pre-calibration.
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申请公布号 |
US5280227(A) |
申请公布日期 |
1994.01.18 |
申请号 |
US19910692332 |
申请日期 |
1991.04.26 |
申请人 |
WHIRLPOOL CORPORATION |
发明人 |
BASHARK, LARRY T. |
分类号 |
B30B9/30;D06F37/30;D06F58/28;G01R31/28;H02P25/04;(IPC1-7):B30B15/22;H02P1/40 |
主分类号 |
B30B9/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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