Hand carryable surface cleaning apparatus
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Solution Overview
Problem
Existing hand vacuum cleaners lack ergonomic design, leading to suboptimal hand feel and usability due to inefficient placement of components such as the suction motor, cyclone unit, and pre-motor filter, which affects airflow and clogging issues.
Innovation Solution
A hand vacuum cleaner design where the suction motor is positioned forward of the handle, the cyclone unit is oriented with its axis parallel to the inlet conduit axis, and a pre-motor filter with a longitudinally extending porous media is used to improve ergonomics and airflow efficiency, reducing clogging and enhancing usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the suction motor is positioned in a conventional location, then the device structure is simple, but the ergonomics and hand feel are suboptimal
Solution Approach 1:
The suction motor is repositioned from a conventional longitudinal placement to a position above the cyclone unit, utilizing vertical space rather than horizontal arrangement. This dimensional change improves ergonomics by balancing the center of gravity while maintaining structural simplicity.
2Productivity
If the cyclone unit is oriented with axis parallel to inlet conduit axis, then airflow efficiency is improved, but the device configuration becomes more complex
Solution Approach 1:
The cyclone unit is oriented with its axis parallel to the inlet conduit axis, changing the angular parameter of the cyclone relative to the airflow path. This parameter change optimizes airflow efficiency by reducing turbulence and improving cyclone separation performance.
3Duration of action of moving object
If a pre-motor filter with longitudinally extending porous media is used, then clogging is reduced and duration of use is extended, but the filter size and device volume increase
Solution Approach 1:
A pre-motor filter with longitudinally extending porous media is implemented upstream of the suction motor. The porous structure provides extended filtration surface area that reduces clogging and extends the duration of use without requiring a proportionally larger overall filter housing volume.
4Ease of operation
If the inlet conduit axis is positioned above the cyclone axis, then ergonomics are improved, but the compactness of the device is reduced
Solution Approach 1:
The inlet conduit axis is positioned asymmetrically above the cyclone axis, creating an optimized center of gravity distribution that improves hand feel and ergonomics. This asymmetric arrangement accepts increased device dimensions as a trade-off for significantly improved operational comfort.
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 provides improved ergonomics and hand feel, increases airflow efficiency by reducing clogging, and allows for a larger upstream filter surface, extending the duration of use without significant airflow reduction.
Implementation Method 1
a suction motor positioned forward of a handle, the cyclone unit being oriented with its axis parallel to an axis of the inlet conduit
Implementation Method 2
a cyclone unit oriented with its axis parallel to the inlet conduit axis
Implementation Method 3
a pre-motor filter with a longitudinally extending porous media is used to improve ergonomics and airflow efficiency, reducing clogging
Data Source
AI summary
A hand vacuum cleaner has a suction motor and fan assembly, an air treatment member and a pre-motor filter. The front end of the air treatment member is forward of the pre-motor filter media and the front end of the suction motor is forward of the pre-motor filter media.