Vortex Tube Separator Dimensional Ratios to Reduce Pressure Loss
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Solution Overview
Problem
Existing vortex tube separators in vacuum cleaners face challenges in reducing power consumption and noise while maintaining effective dust separation performance.
Innovation Solution
A vortex tube separator design with a larger radius dip tube and optimized inlet dimensions, including a wider and shorter dip tube, and an air guiding means with surface-like elements, which allows for efficient air reversal and reduced pressure loss, enabling improved dust separation with lower fan output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional vortex tube separator with standard dip tube dimensions is used, then the structure is simple and manufacturing is easy, but power consumption and noise levels are high
Solution Approach 1:
The patent applies parameter changes by optimizing the dip tube dimensions (inner radius ri and height hi) and inlet opening dimensions (width b and height a) according to specific ratios relative to the vortex tube inner radius ra. The dip tube inner radius is set to ri = Sra × ra where 0.3 ≤ Sra ≤ 0.6, and height hi = Sh × ri where 0.5 ≤ Sh ≤ 5. These parameter optimizations reduce pressure loss and improve separation efficiency, enabling lower power consumption and noise while maintaining structural feasibility
2Loss of energy
If the dip tube radius is increased to reduce pressure loss, then power consumption decreases, but the dip tube may become too wide and affect separation performance
Solution Approach 1:
The patent resolves this contradiction by establishing optimal parameter ranges: the dip tube inner radius ratio Sra is constrained to 0.3 ≤ Sra ≤ 0.6, and the height ratio Sh is constrained to 0.5 ≤ Sh ≤ 5. These parameter optimizations ensure that the dip tube is wide enough to reduce pressure loss at the narrowest point, yet maintains appropriate dimensions to preserve effective dust separation performance
3Object-generated harmful factors
If a smaller blower motor is used to reduce power consumption, then noise levels decrease, but dust separation efficiency may be compromised
Solution Approach 1:
The patent optimizes the inlet opening dimensions (width b and height a) and dip tube dimensions to create a flow path that maximizes dust separation efficiency. The inlet width is set to b = Sb × ra where 0.4 ≤ Sb ≤ 0.7, and inlet height a is optimized accordingly. These parameter changes enable efficient dust separation with lower airflow requirements, allowing the use of smaller, quieter blower motors while maintaining separation performance
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 achieves higher dust separation efficiency with lower power consumption and noise, allowing for the use of smaller and cheaper blower motors, while maintaining or improving dust separation performance.
Implementation Method 1
The air then moves in a helical motion towards the other end of the separator. There, the dust is forced out of the separator through a dust discharge opening by centrifugal force.
Implementation Method 2
The air then moves back towards the first end of the separator and exits through a dip tube leading to an air outlet
Data Source
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AI summary
Vortex tube separator with an inner radius ra, wherein the vortex tube separator has a dip tube with the inner radius ri, the cross-sectional area Fi and the height hi and where ra=Sra*ri and where Sra is at least 1.6 and at most 2.4. Shi is at least 0.5 and at most 7. In addition, the vortex tube separator has an inlet opening which has a cross-sectional area Fe, an inlet height a and an inlet width b, where b=Sb*ra, a=ri2×Sa×π/b and Fe = SF x Fi. Here, Sb is at least 0.42 and at most 0.6. Sa is at least 0.2 and at most 0.65. SF is at least 0.2 and at most 0.9. The inventors found out in simulations and experiments that the selected parameters can be used to provide a vortex tube separator that can have a lower pressure loss and requires a blower motor with a lower power consumption while the dust separation remains the same or is even improved. The improvements in the vortex tube separator according to the invention can lead to lower costs in production. At the same time, a vortex tube separator incorporating the improvements of the present invention can have less noise. The parameters according to the invention can represent a design aid when designing a vortex tube separator. This enables a simpler and faster rough design when designing a vortex tube separator.