Cyclone Chamber Inlet and Vortex Finder Layout for Low 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 to minimize back pressure and enhance 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 in the cyclone chamber, replacing the standard 90-degree sharp angle with a curved transition. This curvature smooths the airflow path, reduces turbulence and eddy currents, and maintains higher airflow velocity, thereby improving cleaning efficiency while adding minimal manufacturing complexity
Solution Approach 2:
The patent modifies the geometric parameters of the cyclone chamber by changing the angle and curvature radius of the sidewall-end wall juncture. By optimizing these parameters, the design achieves reduced back pressure and improved airflow characteristics, directly enhancing cleaning efficiency
2Device complexity
If the cyclone chamber uses a standard 90-degree juncture of sidewall and end wall, then the structure is simple, but back pressure increases, limiting airflow velocity and cleaning efficiency
Solution Approach 1:
The rounded juncture design creates a smooth airflow transition that reduces flow separation and turbulence, thereby decreasing back pressure within the cyclone chamber while maintaining structural simplicity
Solution Approach 2:
The curved transition at the juncture preemptively counteracts the formation of eddy currents and turbulence by providing a gradual airflow direction change, preventing back pressure buildup before it occurs
3Device complexity
If eddy currents are present in the cyclone chamber, then the structure can be simple, but cleaned air mixes with uncleaned air, reducing separation efficiency
Solution Approach 1:
The curved juncture design eliminates eddy currents that cause mixing between cleaned and uncleaned air streams, improving separation efficiency while maintaining a relatively simple chamber structure
Solution Approach 2:
By optimizing the curvature radius and angle of the sidewall-end wall juncture, the patent achieves better air separation performance, ensuring that cleaned and uncleaned air streams remain distinct throughout the cyclone chamber
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 design reduces turbulence and back pressure, improving airflow velocity and cleaning efficiency by maintaining air flow characteristics and directing air smoothly through the cyclone and filter systems.
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, an air outlet, 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 first end wall has a vortex finder having a wall that meets the first end wall at a second juncture, wherein the inlet is spaced from the vortex finder.