초록 ▼

A vacuum cleaner control providing solid state high and low speed electronic control of a vacuum cleaner motor. The control circuit is arranged to terminate operation of the motor in the event the sensed speed of a brush driven by the motor drops below a predetermined low speed as by jamming of the

A vacuum cleaner control providing solid state high and low speed electronic control of a vacuum cleaner motor. The control circuit is arranged to terminate operation of the motor in the event the sensed speed of a brush driven by the motor drops below a predetermined low speed as by jamming of the brush. A membrane touch switch panel includes switches which provide manually controlled inputs to the control. In one form, the control uses phase control in setting the low speed operation of the motor and in another form, the control utilizes half wave rectification in setting the low speed motor operation.

대표청구항 ▼

In a vacuum cleaner having a suction means including an alternating current motor, a rotatable beater brush and drive means for driving the brush as an incident of rotation of said motor, an improved control for controlling the operation of said motor comprising: gated electronic switch means connec

In a vacuum cleaner having a suction means including an alternating current motor, a rotatable beater brush and drive means for driving the brush as an incident of rotation of said motor, an improved control for controlling the operation of said motor comprising: gated electronic switch means connected to the motor for controlling energization thereof; touch switch means for selectively controlling the gated switch means to provide a high speed operation thereof and a low speed operation thereof; sensing means for sensing the speed of rotation of the beater brush; and means for turning off said switch means to terminate operation of the motor when the speed sensed by said sensing means is below a first preselected speed when the gated switch means is arranged to cause high speed operation of the motor, and to terminate operation of the motor when the speed sensed by said sensing means is below a second, lower preselected speed when the gated switch means is arranged to cause low speed operation of the motor, said second preselected speed being caused to be lower than said first preselected speed independently of changes in the voltage conditions of said suction means motor during normal operation thereof.