Cyclone Chamber Inlet and Vortex Finder for Lower Turbulence
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Solution Overview
Problem
Cyclones in vacuum cleaners experience reduced efficiency due to turbulence and eddy currents, which mix cleaned and uncleaned air, and increase back pressure, limiting the cleaning efficiency.
Innovation Solution
The cyclone chamber is designed with a shaped air inlet that matches the outlet shape, and a vortex finder positioned to reduce turbulence, along with a pre-motor filter header and suction motor housing configurations that minimize back pressure through smooth transitions and angled/radiused junctures, enhancing airflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cyclone chamber uses a standard 90-degree juncture of sidewall and end wall, then the structure is simple and easy to manufacture, but turbulence and eddy currents increase, reducing cleaning efficiency and increasing back pressure
Solution Approach 1:
The patent applies curvature by rounding the juncture of the sidewall and end wall instead of using a sharp 90-degree angle. This curved transition smooths the airflow path, reducing turbulence and eddy currents while maintaining effective particulate separation. The rounded geometry eliminates dead zones where eddy currents would form, thereby reducing back pressure and improving cleaning efficiency without significantly complicating manufacturing.
2Device complexity
If the cyclone chamber uses a standard 90-degree juncture of sidewall and end wall, then the structure is simple, but air mixing occurs between cleaned and uncleaned layers, reducing separation efficiency
Solution Approach 1:
The rounded juncture creates a smooth, continuous airflow path that prevents the formation of eddy currents and mixing zones. The curved geometry guides air flow in a more uniform manner, maintaining better separation between cleaned and uncleaned air layers throughout the cyclone chamber, thereby improving separation efficiency.
3Reliability
If the cyclone chamber increases back pressure through turbulence, then the cyclone structure provides robust particulate removal, but the airflow velocity at the inlet decreases, reducing cleaning efficiency
Solution Approach 1:
The curved transition at the juncture reduces turbulence-induced back pressure while maintaining sufficient centrifugal force for effective particulate separation. By eliminating eddy currents and flow separation zones, the rounded geometry reduces resistance to airflow, allowing higher inlet velocities that improve cleaning efficiency without compromising particulate removal effectiveness.
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 design reduces turbulence and back pressure, increasing the airflow velocity at the dirty air inlet, thereby enhancing the cleaning efficiency of the vacuum cleaner.
Implementation Method 1
Currently, many vacuum cleaners utilize one or more cyclonic stages to remove particulate matter from an air stream
Implementation Method 2
Turbulence or eddy currents which develop in a cyclone chamber may reduce the efficiency of the cyclone chamber
Data Source
AI summary
A cyclone comprises a cyclone chamber having an air inlet, a vortex finder, a first end wall, a second end wall and a sidewall, the air inlet has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture of the sidewall and the first end wall, the vortex finder has a wall that meets one of the first and second end walls at a second juncture, wherein the second juncture extends at an angle to both the wall of the vortex finder and the end wall on which the vortex finder is provided.