Multi-Cyclone Dust Collection Airflow Rectification for Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multi-cyclone dust collection units in vacuum cleaners generate high frequency noise due to high speed airflow, causing an unpleasant user experience.
Innovation Solution
A dust collection unit with a first filtering chamber for large foreign objects, a second filtering chamber for small objects, an exhaust member to guide airflow, a storing chamber to collect filtered objects, and a rectifying unit on the exhaust side of the second filtering chamber to reduce airflow noise by rectifying the airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multi-cyclone type dust collection unit is used to filter foreign objects using only cyclone airflows, then the foreign object removal efficiency is improved and the clogging problem is eliminated, but high frequency noise is generated due to high speed airflow in the tangle of airflow passages
Solution Approach 1:
The dust collection unit is divided into multiple filtering chambers (first filtering chamber for large foreign objects, second filtering chamber for small foreign objects), each with its own cyclone airflow passages. This segmentation allows the system to maintain high foreign object removal efficiency while organizing the airflow passages to reduce turbulence and noise generation.
Solution Approach 2:
A rectifying unit is introduced as an intermediary component in the airflow passage to rectify and smooth the high speed airflow before it exits the filtering chambers. This rectifying unit reduces the turbulence and high frequency noise generated by the cyclone airflows while maintaining the effective filtration performance.
2Productivity
If a plurality of airflow passages are formed in the collection unit to enable multi-cyclone filtration, then the foreign object removal efficiency is improved, but the passages become tangled and generate high frequency noise
Solution Approach 1:
The complex airflow passage system is segmented into distinct filtering chambers with dedicated passages for different particle sizes. The first filtering chamber handles large foreign objects while the second filtering chamber handles smaller particles, organizing the complexity into manageable, functionally-separated segments that are easier to design and maintain.
Solution Approach 2:
The airflow passages are arranged in a vertical stacking configuration with filtering chambers positioned at different heights. The first filtering chamber is positioned above the second filtering chamber, allowing airflow to move vertically through the system. This dimensional arrangement reduces passage tangling and simplifies the overall configuration compared to horizontal arrangements.
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 effectively reduces noise generated by the airflow, attenuating the user's unpleasant sensation and improving the satisfaction with the multi-cyclone dust collection unit.
Implementation Method 1
a cyclone type filter is designed to filter the foreign objects using cyclone airflow
Implementation Method 2
high frequency noise is generated due to the high speed airflow
Implementation Method 3
a cyclone type filter is designed to filter the foreign objects using cyclone airflow
Data Source
AI summary
A dust collection unit for a vacuum cleaner includes a first filtering chamber filtering relatively large foreign objects, a second filtering chamber filtering relatively small foreign objects when air exhausted from the first filtering chamber is introduced into the second filtering chamber, an exhaust member disposed above the filtering chambers to guide airflow, a storing chamber disposed under the filtering chambers to store the foreign objects filtered in the filtering chambers, a sealing member sealing bottoms of the filtering chambers, and a rectifying unit formed on an exhaust side of the second filtering chamber to rectify airflow, thereby reducing noise generated by the airflow.