Counter-Rotating Vacuum Foot for Tight-Space Debris Collection
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Solution Overview
Problem
Conventional vacuum cleaners often struggle with efficiently collecting dirt and debris, especially in tight spaces and without the need for continuous suction power, as their agitator mechanisms and suction paths are not optimized for manual operation and energy efficiency.
Innovation Solution
The design incorporates counter-rotating agitators mounted on a foot assembly with a focused suction inlet and an intermediate collection chamber, allowing for manual operation without suction and efficient dirt collection into a removable dirt cup, with the agitators rotating via a drive assembly for effective debris ingestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional vacuum cleaners use a cylindrical brush assembly spanning the width of the foot, then dirt and hair can be dislodged from the cleaning surface, but the device becomes less effective in tight spaces and under furniture
Solution Approach 1:
The patent divides the foot assembly into multiple sections with separate agitators positioned at different locations. Instead of one large brush spanning the entire foot width, multiple smaller agitators are distributed across the foot, allowing them to reach into tight spaces and under furniture while maintaining effective dirt dislodgment capability.
2Productivity
If the vacuum cleaner requires continuous suction power for effective cleaning, then dirt collection efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent incorporates an intermediate collection chamber that temporarily stores debris before it enters the main dirt cup. This preliminary collection action allows the system to maintain effective dirt removal capability while reducing the immediate demand on the suction source, enabling more efficient energy utilization during operation.
Solution Approach 2:
The intermediate collection chamber acts as a mediator between the agitators and the main dirt cup. It provides a buffer zone that decouples the dirt collection process from continuous high-power suction requirements, allowing the system to operate effectively with lower energy consumption.
3Ease of operation
If the suction inlet spans the full width of the foot assembly, then debris can be ingested from across the cleaning path, but accessibility under furniture is reduced
Solution Approach 1:
The suction inlet is divided into multiple smaller openings positioned at different locations on the foot assembly. These distributed inlet openings allow debris to be ingested from various points across the cleaning path while keeping each individual opening compact enough to fit under furniture and in tight spaces.
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
This configuration enhances energy efficiency, allows for effective dirt collection both manually and with suction power, and provides improved accessibility under furniture and in tight spaces, increasing user convenience and cleaning effectiveness.
Implementation Method 1
a suction source to produce a working airflow... when the suction source is active, the suction source draws debris through the suction inlet, along the working conduit for collection into the dirt container
Implementation Method 2
at least one agitator located on the housing in juxtaposition with the surface to be cleaned and adapted to impel debris on the surface being cleaned... manual movement of the housing over the surface being cleaned rotates the at least one agitator and transports debris removed from the surface being cleaned by the agitator into the suction inlet
Data Source
AI summary
A housing has a suction inlet thereon and a suction source associated with the housing, in fluid communication with the suction inlet to produce a working airflow therethrough and a dirt container in fluid communication with the suction inlet and suction source. The housing further comprises a body defined by a central portion and a pair of extension arms that extend laterally outwardly from the central portion, wherein each extension comprises a mount, which receives a rotatable agitator thereon. A drive assembly is configured to counter-rotate each agitator with respect to the other agitator, and wherein the suction inlet is positioned on the housing rearward of, and between, each of the axes of rotation of each agitator. The counter-rotating agitators are operable to cooperate with the suction source to direct dust and debris outside the periphery of the housing along a converging debris path, towards the suction inlet.