Cyclone Chamber Rib Structure for Noise and Dirt Separation
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Solution Overview
Problem
Current surface cleaning apparatuses, such as vacuum cleaners, face challenges in reducing noise and improving separation efficiency due to vibrations in the down duct and re-entrainment of dirt particles, which affect the overall cleaning performance.
Innovation Solution
The cyclone bin assembly includes a cyclone chamber and a dirt collection chamber with a varying cross-sectional area and a fine particle separator, featuring reinforcing ribs to reduce vibrations and disrupt airflow, enhancing separation efficiency by accelerating air velocity and introducing turbulence to dis-entrain fine dirt particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the down duct is made rigid to reduce vibrations, then noise is reduced, but the structural complexity increases
Solution Approach 1:
The down duct is divided into multiple sections with reinforcing ribs strategically positioned at specific intervals. This segmentation approach reduces vibrations and noise by stiffening the duct structure without requiring complete redesign of the entire system, thereby managing structural complexity through localized modifications rather than global changes.
Solution Approach 2:
Reinforcing ribs are added to the down duct structure to counteract the harmful vibrations. These ribs act as structural counterweights that balance the vibrational forces generated by airflow, reducing noise transmission while maintaining the overall duct configuration and minimizing structural complexity increases.
2Reliability
If the cross-sectional area of the dirt collection chamber is increased to improve dirt dis-entrainment, then separation efficiency is improved, but the volume of the chamber increases
Solution Approach 1:
The dirt collection chamber features a non-uniform cross-sectional area that varies along its length, with larger cross-sectional areas positioned at specific locations where dirt dis-entrainment is most effective. This local quality variation allows the chamber to achieve high separation efficiency in critical zones without requiring a uniformly large volume throughout the entire chamber structure.
Solution Approach 2:
Instead of uniformly increasing the chamber volume, the design varies the cross-sectional area in the transverse dimension while maintaining a compact overall volume. This dimensional approach allows enhanced dirt dis-entrainment performance at specific locations without proportionally increasing the total chamber volume, effectively decoupling separation efficiency from overall size.
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 reduces noise, improves dirt separation efficiency, and prevents fine particles from fouling the suction motor and pre-motor filter, leading to a more effective cleaning process.
Implementation Method 1
The rotation of the air in the cyclone results in some of the particulate matter in the airflow stream being disentrained from the airflow stream
Implementation Method 2
The rotation of the air in the cyclone results in some of the particulate matter in the airflow stream being disentrained from the airflow stream
Implementation Method 3
the cross sectional area of the dirt collection chamber in a plane transverse to its length changes at least once along the length of the dirt collection chamber... the flow dynamics of the air in the dirt collection chamber may be varied and the amount of dirt that is dis-entrained from the air may be decreased
Implementation Method 4
Reinforcing ribs extend between the down duct and the floor of the cyclone chamber. The ribs may help reduce vibrations in the down duct, including, for example, vibrations induced by air flowing through the down duct
Data Source
AI summary
A surface cleaning apparatus may comprise an air flow path extending from a dirty air inlet to a clean air outlet and a suction motor. The surface cleaning apparatus may comprise a cyclone chamber provided in the air flow path. The cyclone chamber may comprise a cyclone chamber first end and a cyclone chamber second opposed end, a cyclone air inlet, a cyclone air outlet provided at the cyclone chamber second opposed end and a cyclone chamber wall. An air exit conduit may be exterior to the cyclone chamber and may extend from the cyclone air outlet. At least one reinforcing rib may be positioned in abutting relationship with the air exit conduit and the cyclone chamber second opposed end.