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 configured to provide a notification to a user when the speed of the motor exceeds a threshold value;
wherein the notification is indicative of an excessive amount of dirt in the receptacle.
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Accused Products
Abstract
A vacuum cleaner includes a nozzle, an air-filtering dirt receptacle, and a motor. A fan 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 is configured to provide a notification to a user when the speed of the motor exceeds a threshold value.
40 Citations
10 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 configured to provide a notification to a user when the speed of the motor exceeds a threshold value; wherein the notification is indicative of an excessive amount of dirt in the receptacle. - View Dependent Claims (4, 5, 7)
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2. 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 configured to provide a notification to a user when the speed of the motor exceeds a threshold value; wherein the notification directs the user to empty the receptacle.
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3. 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 configured to provide a notification to a user when the speed of the motor exceeds a threshold value; wherein the notification directs the user to replace the receptacle.
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6. 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 configured to provide a notification to a user when the speed of the motor exceeds a threshold value; wherein the controller is configured to control the motor to maintain a constant motor temperature.
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8. 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 configured to control the motor to maintain a constant motor temperature. - View Dependent Claims (9, 10)
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Specification