Air-Cushion Vacuum Cleaner Base for Stable Canister Hovering
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Solution Overview
Problem
Existing air cushion-supported canister vacuum cleaners face issues with stability and weight distribution due to shifting center of gravity, leading to tilting and instability, especially when transitioning between different floor surfaces and when using power or non-electrified hoses, and require inefficient power usage and heavy construction.
Innovation Solution
A vacuum cleaner canister assembly with a base assembly that generates a stable air cushion using an exhaust port, domed pocket, and concentric ridges and channels to distribute airflow efficiently, aligning lift regions with the center of gravity and reducing the weight-bearing load on the air cushion by angling the vacuum hose intake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the canister assembly is supported on an air cushion to enable free movement and reduce friction, then ease of operation is improved, but stability and level orientation deteriorate due to center of gravity shifts
Solution Approach 1:
The patent applies local quality by creating different air pressure zones at different locations under the canister assembly. Multiple air outlets are positioned strategically to generate localized high-pressure air cushions that counterbalance the shifting center of gravity. This allows different regions of the canister to have different lift characteristics, maintaining stability while enabling free movement.
Solution Approach 2:
The patent changes the parameters of the air cushion system by dynamically adjusting air pressure and flow distribution through multiple outlets. By varying the pressure parameters at different locations and the overall air flow rate, the system compensates for center of gravity shifts and maintains stable operation while preserving ease of movement.
2Productivity
If power nozzles with heavy electrified hoses are used to improve cleaning effectiveness, then productivity is improved, but the canister orientation deteriorates due to weight imbalance
Solution Approach 1:
The patent applies the anti-weight principle by using the air cushion pressure distribution to counterbalance the weight of the power hose and attachments. The air outlets are positioned and controlled to generate compensating lift forces that offset the imbalance caused by heavy equipment, maintaining proper canister orientation during high-productivity cleaning operations.
3Weight of moving object
If conventional air cushion design is used to reduce weight and improve mobility, then ease of operation is improved, but power efficiency deteriorates due to insufficient air cushion stability
Solution Approach 1:
The patent improves power efficiency through local quality by concentrating air pressure where it is most needed to maintain stability. Multiple air outlets are positioned to create localized high-pressure zones that provide maximum lift and stability with minimum power consumption, rather than using a uniform air cushion design that would waste energy.
4Stability of the object's composition
If the air cushion flow is increased to improve stability, then stability is improved, but power consumption increases
Solution Approach 1:
The patent resolves this contradiction by applying local quality - directing high air pressure and flow rate only to specific locations where stability is needed, rather than increasing air flow uniformly across the entire canister. This localized approach achieves the required stability with significantly reduced overall power consumption.
Solution Approach 2:
The patent uses parameter changes by dynamically adjusting the air pressure and flow rate parameters at different outlets based on operational conditions. This allows the system to maintain stability with optimized power consumption, changing parameters as needed rather than operating at constant high power levels.
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 solution provides improved stability and reduced power requirements, allowing smooth movement over transitions and irregular surfaces while maintaining a horizontal orientation, making the vacuum cleaner easier to maneuver and transport.
Implementation Method 1
a base assembly that generates an air cushion to support the canister assembly, the base assembly comprising: an exhaust port through which a flow of air exhausted from a motor of the canister assembly is discharged below the base assembly
Implementation Method 2
a first depending ridge circumscribing the domed pocket, under which air escapes from the pocket so as to generate lift against a floor surface underlying the base assembly
Data Source
AI summary
A vacuum cleaner canister assembly supported on a cushion of air. A generally concentric series of ridges and channels surround a domed pocket in the base of the canister assembly. Air discharged into the pocket escapes under the ridges and flows into the channels so as to be distributed about the base of the assembly. The pocket is located generally beneath the center of mass and on the centerline of the assembly. A collection chamber also accumulates collected particulate so as to be located generally proximate the center of mass. An inlet tube at the front of the assembly is angled downwardly towards the floor to reduce the load on the canister assembly from the weight of the hose.