Motor Control for a Vacuum Cleaner
First Claim
Patent Images
1. A vacuum cleaner comprising:
- a nozzle;
an air-filtering dirt receptacle;
a motor;
a fan configured to be driven by the motor to drive a flow of air that carries dirt from a surface through the nozzle and into the receptacle to clean the surface; and
a controller that provides a notification to a user of the vacuum cleaner indicative of an excessive amount of dirt in the receptacle when current drawn by the motor drops below a threshold value.
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Abstract
A vacuum cleaner includes a nozzle, an air-filtering dirt receptacle, and a motor. A fan of the vacuum cleaner is configured to be driven by the motor to drive a flow of air that carries dirt from a surface through the nozzle and into the receptacle to clean the surface. A controller of the vacuum cleaner provides a notification to a user of the vacuum cleaner indicative of an excessive amount of dirt in the receptacle when current drawn by the motor drops below a threshold value.
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Citations
9 Claims
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1. A vacuum cleaner comprising:
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a nozzle; an air-filtering dirt receptacle; a motor; a fan configured to be driven by the motor to drive a flow of air that carries dirt from a surface through the nozzle and into the receptacle to clean the surface; and a controller that provides a notification to a user of the vacuum cleaner indicative of an excessive amount of dirt in the receptacle when current drawn by the motor drops below a threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification