Surface cleaning apparatus
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Solution Overview
Problem
Conventional surface cleaning apparatuses, such as upright and canister vacuum cleaners, face limitations in maneuverability and usability in smaller or crowded areas, as they often require separate movement of components, which can be cumbersome and inefficient.
Innovation Solution
A surface cleaning apparatus comprising a portable cleaning unit with a suction motor operable on both DC and AC power, removably mounted on a wheeled base with a dual motor design, allowing for increased airflow and maneuverability when mounted and reduced weight when handheld, featuring a cyclonic separation stage and a removable dirt collection chamber for easy emptying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a larger suction motor is used to increase airflow, then cleaning efficiency is improved, but the weight of the apparatus increases
Solution Approach 1:
The patent implements a dual motor configuration where a first suction motor is mounted on the base and a second suction motor is mounted on the portable cleaning unit. This dynamic setup allows the system to switch between motor configurations: when the unit is docked, both motors operate together to provide maximum airflow; when portable, only the lighter second motor operates, reducing weight while maintaining adequate performance.
2Productivity
If the portable cleaning unit is mounted on a wheeled base, then airflow is increased, but maneuverability in small areas is reduced
Solution Approach 1:
The cleaning system is divided into two separable components: a base unit with wheels and a first suction motor, and a portable cleaning unit with a second suction motor. This segmentation allows the user to operate the full-sized base unit for large-area cleaning where high airflow is needed, and to detach and use only the portable unit for maneuvering in tight or small spaces, thus resolving the contradiction between airflow and maneuverability.
3Ease of operation
If the suction motor is integrated into the portable cleaning unit, then portability is improved, but airflow is reduced
Solution Approach 1:
The patent combines two suction motors in a distributed configuration: the first motor on the base and the second motor on the portable unit. When the portable unit is docked with the base, the motors merge their airflow contributions to provide maximum cleaning power. When separated, the portable unit maintains independent operational capability with its own motor, thus achieving both high airflow when needed and portability when needed.
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
Enhances cleaning efficiency and usability by providing higher airflow when mounted on a wheeled base and reduced weight and flexibility when used handheld, with the ability to empty the dirt collection chamber without carrying the motor, improving maneuverability and stability.
Implementation Method 1
a portable cleaning unit which may be carried by hand or a shoulder strap such as a pod, which is removably mounted on a wheeled base
Data Source
AI summary
A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet and includes a cyclone bin assembly, a screen and a suction motor positioned in the air flow path. The screen is axially removable from the cyclone bin assembly.