Hand Vacuum Cyclone Layout for Ergonomics and Filter Airflow
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Solution Overview
Problem
Existing hand vacuum cleaners lack ergonomic design, leading to discomfort during use and reduced airflow efficiency due to clogged pre-motor filters.
Innovation Solution
A hand vacuum cleaner design with a cyclone axis positioned below the suction motor, an air inlet conduit axis parallel to the cyclone axis, and a pre-motor filter with a longitudinally extending porous media that allows air to travel upwardly to the suction motor, enhancing ergonomics and airflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cyclone axis and inlet conduit axis are positioned in conventional configurations, then the structural design is simpler, but the ergonomics and hand feel deteriorate
Solution Approach 1:
The patent applies asymmetry by positioning the cyclone axis below the suction motor axis and the inlet conduit axis above the cyclone axis, creating an asymmetric vertical arrangement. This asymmetric configuration optimizes the center of gravity and improves ergonomics, allowing the vacuum cleaner to be held more comfortably in the hand while maintaining structural feasibility.
2Productivity
If the pre-motor filter is positioned in conventional locations, then the device structure is simpler, but airflow efficiency deteriorates due to filter clogging
Solution Approach 1:
The patent applies dimensionality change by transitioning from a conventional horizontal or lateral filter arrangement to a vertical configuration where the pre-motor filter is positioned below the suction motor with air flow moving upward. This vertical arrangement utilizes the gravitational field to prevent debris from settling on the filter, thereby maintaining airflow efficiency and reducing clogging while preserving structural simplicity.
3Ease of operation
If the suction motor is positioned above the cyclone chamber, then airflow path is shorter, but the center of gravity shifts causing poor hand feel
Solution Approach 1:
The patent applies the counterweight principle by strategically positioning the cyclone chamber below the suction motor and the pre-motor filter below the cyclone chamber, creating a weighted distribution that balances the center of gravity toward the handle. This counterbalances the weight of the motor and other components, improving ergonomics and hand feel while maintaining an efficient airflow path through the vertical arrangement.
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
The design improves hand feel and reduces the likelihood of airflow reduction due to filter clogging, providing a more efficient and comfortable cleaning experience.
Implementation Method 1
A pre-motor filter with a longitudinally extending porous media that allows air to travel upwardly to the suction motor
Implementation Method 2
a cyclone unit comprising a cyclone chamber having a cyclone axis of rotation
Data Source
AI summary
A surface cleaning apparatus has a main body having a main body actuator operable between an open position and a closed position. An assembly removably mounted to the main body has an air treatment member having an openable door and an assembly door lock, the assembly door lock comprising an actuation portion operable between an open position and a closed position and lock portion operable between an engaged position in which the door is secured in a closed position and a disengaged position in which the door is openable. When the assembly is mounted to the main body, the main body actuator is operatively connected to the actuation portion of the assembly door lock whereby when the main body actuator is moved from the closed position to the open position, the actuation portion is moved.