Vacuum cleaner and method for controlling thereof
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Solution Overview
Problem
Vacuum cleaners face challenges in controlling motor operations adaptively to varying loads applied by different surfaces, leading to inefficient cleaning and potential motor damage due to inconsistent current supply.
Innovation Solution
A vacuum cleaner system comprising a processor that senses load thresholds and adjusts the speed of motors to maintain optimal operation, reducing current supply and preventing motor overload by controlling the first motor's speed and suction pressure based on sensed load levels, with threshold values determining specific control actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor speed is increased to improve cleaning performance, then cleaning efficiency is improved, but motor load increases causing potential damage
Solution Approach 1:
The motor speed is made dynamically adjustable based on detected surface conditions. The controller modifies the rotation speed of the drum motor according to the type of surface (carpet, tile, wood, etc.), allowing the system to optimize cleaning performance for each surface while preventing excessive speed that would damage the motor or fail to clean effectively.
Solution Approach 2:
The system uses a sensor to detect the type of surface being cleaned and provides feedback to the controller. Based on this feedback, the controller automatically adjusts the motor speed to appropriate levels, ensuring optimal cleaning efficiency while protecting the motor from overload damage.
2Productivity
If the motor operates at high speed for all surfaces, then cleaning performance on carpets is improved, but energy consumption increases and motor damage risk increases on hard surfaces
Solution Approach 1:
The motor speed is dynamically adjusted based on the detected surface type. For carpet surfaces, the motor operates at higher speeds to effectively lift and clean embedded particles. For hard surfaces like tiles and wood, the motor operates at lower speeds, reducing energy consumption while maintaining adequate cleaning performance.
Solution Approach 2:
The system changes the operational parameters (motor speed) according to the detected surface conditions. Different speed parameters are selected based on surface type, optimizing the balance between cleaning performance and energy consumption for each specific surface.
3Reliability
If the motor speed is reduced to prevent damage, then motor reliability is improved, but cleaning efficiency decreases
Solution Approach 1:
The motor speed is not fixed but dynamically adjusted based on real-time detection of surface conditions. The system maintains motor reliability by preventing excessive speed on hard surfaces while ensuring adequate cleaning efficiency by increasing speed when carpets are detected.
Solution Approach 2:
The sensor provides continuous feedback about the surface type, enabling the controller to adjust motor speed appropriately. This feedback mechanism ensures the motor operates within safe speed limits for its reliability while maintaining high cleaning efficiency when conditions permit.
Data Source
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AI summary
Disclosed is a vacuum cleaner. The present vacuum cleaner includes a drum mounted with a brush, a first motor for rotating the drum, a sensor for sensing a load applied to the first motor, a second motor generating suction pressure, and a processor for controlling at least one from the first motor and the second motor according to a size of a load sensed from the sensor.