Hand carryable surface cleaning apparatus
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Solution Overview
Problem
Conventional hand vacuum cleaners often suffer from ergonomic issues and reduced airflow due to clogged pre-motor filters, leading to suboptimal cleaning performance and user experience.
Innovation Solution
A hand vacuum cleaner design featuring a cyclone unit with a horizontally extending axis, a suction motor positioned forward of the handle, 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
1Reliability
If a conventional pre-motor filter design is used, then the structure is simple, but airflow is reduced due to filter clogging
Solution Approach 1:
The pre-motor filter is divided into multiple filter elements arranged in parallel within the filter housing. This segmentation allows air to flow through multiple pathways simultaneously, reducing the likelihood that clogging of one element will significantly reduce overall airflow to the motor.
Solution Approach 2:
The filter elements are arranged in a three-dimensional configuration within the housing, utilizing vertical and horizontal spacing to create multiple airflow channels. This dimensional arrangement increases the effective filtering surface area while maintaining adequate airflow paths.
2Ease of operation
If the suction motor is positioned rearward, then the structure is compact, but ergonomics and hand feel are poor
Solution Approach 1:
The suction motor is positioned asymmetrically forward of the cyclone separator rather than at the traditional rearward location. This asymmetric placement optimizes the center of gravity and weight distribution for better handheld ergonomics while maintaining a compact overall form factor.
3Reliability
If a separate conduit is used for filtered air, then the airflow path is clear, but the device complexity increases
Solution Approach 1:
The housing structure serves dual functions: it provides structural support and simultaneously acts as the airflow conduit. The filtered air passes through the filter elements and travels through channels formed by the housing walls directly to the suction motor inlet, eliminating the need for separate internal conduits.
Solution Approach 2:
The filter housing is designed as a multi-functional component that combines structural support, airflow channeling, and motor mounting functions. This universal design reduces the number of separate parts needed while maintaining efficient airflow paths.
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 ergonomics and hand feel, extends the duration of use without airflow reduction due to filter clogging, and eliminates the need for a separate conduit for filtered air, resulting in improved cleaning performance.
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 hand vacuum cleaner design featuring a cyclone unit with a horizontally extending axis
Data Source
AI summary
A hand vacuum cleaner has a cyclone having a cyclone axis of rotation that extends between the front and rear ends of the cyclone. A main body houses a suction motor. The suction motor is positioned rearward of the cyclone. The suction motor has an axis of rotation that is parallel to the cyclone axis of rotation. A pistol grip handle is located at the rear end of the hand vacuum cleaner wherein a finger grip area is positioned forward of the pistol grip handle and rearward of the main body. The cyclone axis of rotation extends through the pistol grip handle. An energy storage unit located at a lower end of the pistol grip handle and a power switch located at an upper end of the pistol grip handle.