Dust extractor
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Solution Overview
Problem
Dust extractors often experience insufficient air flow rates due to blocked filters or hoses, requiring manual user intervention to adjust power levels, which can disrupt work and increase noise.
Innovation Solution
A dust extractor device with a control unit that adjusts motor power based on measured air flow rates, using pressure sensors and rotation speed signals to maintain optimal airflow, activating alarms if necessary, and allowing for continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user manually increases power level when air flow rate is insufficient, then dust extraction capability is improved, but work continuity is disrupted and noise level increases
Solution Approach 1:
The dust extractor automatically monitors air flow rate and adjusts motor power without user intervention. The control unit continuously receives air flow rate signals from the flow sensor and autonomously increases or decreases motor power to maintain optimal dust extraction, eliminating the need for manual power adjustments and ensuring continuous work operation.
Solution Approach 2:
The system implements a closed-loop feedback mechanism where the flow sensor continuously measures air flow rate and sends signals to the control unit. The control unit processes this feedback information and automatically adjusts motor power accordingly, creating a self-regulating system that maintains dust extraction capability while avoiding unnecessary power changes that would increase noise.
2Use of energy by moving object
If the motor power is continuously adjusted to maintain optimal air flow rate, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical power adjustment mechanisms with an electronic control system. The control unit electronically modulates motor power based on electrical signals from the flow sensor, eliminating the need for mechanical belts, pulleys, or manual switches. This substitution maintains energy efficiency while actually reducing mechanical complexity through electronic automation.
Solution Approach 2:
The system dynamically changes the electrical parameters (power, voltage, current) supplied to the motor based on real-time air flow rate measurements. The control unit adjusts motor power parameters in response to flow sensor feedback, enabling energy-efficient operation without requiring complex mechanical reconfiguration. The parameter changes are achieved through simple electronic control rather than mechanical complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures consistent dust extraction by automatically adjusting power levels, reducing noise, and minimizing interruptions, thus enhancing operational efficiency and user convenience.
Implementation Method 1
The dust extractor causes suction to remove dust particles
Implementation Method 2
The control system may be arranged to calculate the air flow rate from the pressure difference over the suction fan and from the rotation speed of the suction fan
Implementation Method 3
The dust extractor may comprise a filter for collecting the dust particles from the air flow
Data Source
AI summary
A dust extractor device that includes: a fan for causing an air flow, a motor to rotate the fan, a dust separator to separate dust particles from the air flow, a flow measuring unit for measuring air flow rate of the air flow, and a control unit configured to adjust electric power of the motor based on the measured air flow rate.