Hand Vacuum Cleaner Nested Motor Design for Compact Cordless Operation
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Solution Overview
Problem
Existing hand vacuum cleaners often have large and cumbersome designs, limiting their maneuverability and ergonomics, and are typically tethered to a power source, restricting their use without a cord.
Innovation Solution
A compact hand vacuum cleaner design with a nested fan and motor assembly and filters between onboard energy storage members, allowing for increased maneuverability and portability without a cord.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the hand vacuum cleaner uses a traditional design with separate components, then it provides sufficient power and capacity, but it results in a large and cumbersome form that limits maneuverability and ergonomics
Solution Approach 1:
The patent applies nesting by placing the motor and fan assembly within the battery compartment space. Specifically, the motor assembly is positioned between the first and second batteries in the longitudinal direction, utilizing the internal volume of the battery housing rather than requiring separate external space. This nested arrangement reduces the overall volume of the hand vacuum cleaner while maintaining all necessary functional components.
2Volume of moving object
If the hand vacuum cleaner is designed to be compact for better ergonomics and storage, then it improves maneuverability, but it may compromise the power and capacity provided by larger designs
Solution Approach 1:
The patent repositions components along the longitudinal dimension of the device. The motor and fan assembly, traditionally positioned separately, are relocated to the longitudinal space between batteries. This dimensional reorganization allows compact transverse dimensions for ergonomics while maintaining adequate longitudinal space for power components, thus preserving suction power in a compact form.
Solution Approach 2:
The patent merges the motor and fan assembly into a single integrated unit that occupies the same spatial envelope as the battery compartment. This combination eliminates the need for separate housing for the motor assembly, reducing overall device volume while maintaining the functional power output required for effective cleaning.
3Use of energy by moving object
If the hand vacuum cleaner is tethered to a power source, then it ensures continuous power supply, but it restricts range and maneuverability
Solution Approach 1:
The patent extracts the power source from an external tethered configuration and incorporates it internally as onboard batteries. The first and second batteries are housed within the device body, providing portable power that eliminates the need for a cord or external power connection, thereby enabling unrestricted movement and use in various locations.
4Duration of action of moving object
If the hand vacuum cleaner uses more batteries for extended runtime, then it increases power capacity, but it increases weight and size
Solution Approach 1:
The patent nests the motor and fan assembly within the battery compartment, allowing two batteries to be positioned in the longitudinal direction without increasing transverse dimensions. This nested configuration provides extended runtime through dual batteries while minimizing weight and size increases by efficiently utilizing internal space rather than adding external volume.
Data Source
AI summary
A hand vacuum cleaner has an airflow path from an air inlet to a clean air outlet with an air treatment member and a fan and motor assembly in the air flow path. The hand vacuum cleaner has a cyclone chamber with a plate positioned at the front end of the cyclone chamber. A dirt collection chamber is external to and connected in flow communication with a cyclone chamber by a gap located between the plate and the sidewall of the cyclone chamber. The gap is located only at an upper portion of the plate and/or is larger at the upper portion of the plate.