Multi-Angle Cyclone Layout for Compact Vacuum Separation
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Solution Overview
Problem
Vacuum cleaners with cyclonic separating units face a trade-off between increasing separation efficiency and maintaining a compact size, as adding more cyclones in parallel enhances separation but can increase the external diameter and block airflow if cyclones are too small.
Innovation Solution
The design incorporates a second cyclonic separating unit with cyclones arranged in multiple sets at different angles and positions, allowing for a compact arrangement while maximizing the number of cyclones, with each set overlapping to reduce the overall height and volume of the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of parallel cyclones is increased to improve separation efficiency, then the separation efficiency increases, but the external diameter of the separating unit increases
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement of cyclones to a three-dimensional spatial configuration. Multiple sets of cyclones are arranged at different angles (first angle and second angle) relative to the central axis, with cyclones positioned both radially and axially. This multi-dimensional arrangement allows more cyclones to be packed into a compact volume without proportionally increasing the external diameter, thereby maintaining separation efficiency while controlling the overall size of the separating unit.
2Measurement precision
If the size of individual cyclones is reduced to fit more cyclones, then more cyclones can be arranged, but the cyclones can become blocked and reduce airflow rate
Solution Approach 1:
The patent applies different geometric and positional characteristics to different sets of cyclones. The first set of cyclones is arranged at a first angle to the central axis, while the second set is arranged at a second angle. This local differentiation in arrangement geometry allows each set to be optimized for its specific position, preventing uniform blockage patterns and maintaining better airflow distribution across all cyclones, thereby preserving both separation efficiency and airflow rate.
3Measurement precision
If cyclones are arranged in a ring configuration, then separation efficiency improves, but the height of the separating apparatus increases
Solution Approach 1:
The patent employs a nested arrangement where multiple sets of cyclones are positioned concentrically and axially relative to each other. The first set of cyclones is located at a first axial position, while the second set is positioned at a different axial location along the central axis. This nesting strategy allows cyclones to be stacked vertically in an organized manner, improving separation efficiency through multiple parallel separation stages while controlling the overall height by efficiently utilizing the vertical space with optimized axial spacing.
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 enhances separation efficiency without increasing the size of the vacuum cleaner, allowing for effective airflow and reduced cyclone blockage, enabling direct fluid flow to the fan unit without a filter assembly.
Implementation Method 1
This is due to an increase in the centrifugal forces generated within the cyclones which cause dust particles to be thrown from the air flow
Implementation Method 2
Vacuum cleaners which utilize cyclonic separating apparatus are well known. The separating apparatus comprises first and second cyclonic separating units through which an incoming air passes sequentially.
Data Source
AI summary
A surface treating appliance includes a first cyclonic separating unit including at least one first cyclone, and a second cyclonic separating unit located downstream from the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel. The plurality of second cyclones is divided into at least a first set of second cyclones arranged about an axis, and a second set of second cyclones, the first set of second cyclones extending about the second set of second cyclones. Each second cyclone has a longitudinal axis, with the longitudinal axes of the first set of second cyclones being arranged at a first angle to said axis, and the longitudinal axes of the second set of second cyclones being arranged at a second angle to said axis, and wherein the first angle is greater than the second angle.