초록 ▼

A food processor with a motor control that disables speed regulation during motor start operation and high torque operation. Whenever motor speed is less than a set speed, both a motor starter winding and a main winding are energized without speed regulation. When the motor speed is equal to or grea

A food processor with a motor control that disables speed regulation during motor start operation and high torque operation. Whenever motor speed is less than a set speed, both a motor starter winding and a main winding are energized without speed regulation. When the motor speed is equal to or greater than the set speed, the starter winding is disconnected and a voltage controller is enabled to control motor speed. During high torque conditions, the motor speed oscillates between set speed and a lower speed as the starter winding and the voltage controller are alternately switched in and out of the motor control circuit.

대표청구항 ▼

[ What is claimed is:] [1.]1. A food processor having an induction motor coupled to an impeller, the induction motor having a main winding and a starter winding, a motor controller connected with the starter winding and the main winding, said motor controller comprising;a motor speed detector couple

[ What is claimed is:] [1.]1. A food processor having an induction motor coupled to an impeller, the induction motor having a main winding and a starter winding, a motor controller connected with the starter winding and the main winding, said motor controller comprising;a motor speed detector coupled to the motor to produce a speed signal proportional to the speed of the motor; anda signal processing circuit responsive to the speed signal to perform the steps of (a) connecting the starter and main windings in circuit with a source of electrical power if the motor speed is less than a set speed and (b) disconnecting the starter winding from the source of electrical power if the motor speed is equal to or greater than the set speed, wherein the motor is energized by the starter and main windings during motor start operations and during high torque conditions in which the motor speed declines below the set speed and is energized by the main winding when the motor speed is equal to or greater than the set speed.