Cyclone Dirt Outlet Layout for Low-Flow Particle Separation
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Solution Overview
Problem
Cyclonic air treatment systems in surface cleaning apparatus face inefficiencies in dirt particle separation, particularly at low air flow rates, leading to reduced separation efficiency and increased power consumption.
Innovation Solution
The design incorporates multiple dirt outlet regions within the cyclone chamber, with at least one outlet positioned closer to the cyclone air inlet to maintain high cyclonic particle velocity, ensuring effective dirt separation even at lower air flow rates, and an additional outlet near the cyclone end for further dirt collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single dirt outlet is positioned at the end of the cyclone chamber, then the structure is simple, but dirt separation efficiency decreases at low air flow rates
Solution Approach 1:
The cyclone chamber is divided into multiple zones along its length, with the first dirt outlet region positioned in the upstream portion and the second dirt outlet region positioned in the downstream portion. This segmentation allows different regions to handle dirt separation at different stages of the cyclonic flow, maintaining high separation efficiency across varying air flow rates while avoiding excessive structural complexity.
2Use of energy by moving object
If air flow rate is reduced to lower power consumption, then energy efficiency improves, but dirt separation efficiency decreases
Solution Approach 1:
The first dirt outlet region is positioned upstream in the cyclone chamber where cyclonic particle velocity is still high, allowing dirt separation to occur before the air flow rate significantly decreases. This preliminary action ensures that dirt is removed when separation efficiency is maximized, enabling the system to operate at lower power consumption levels while maintaining effective dirt separation.
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 dirt separation efficiency across various air flow rates, allowing the apparatus to operate at lower power modes with reduced energy consumption and extended battery life in hand-held vacuum cleaners.
Implementation Method 1
cyclonic air treatment member comprising: (a) a cyclone having a cyclone sidewall, a cyclone first end, an opposed cyclone second end, a cyclone air inlet proximate the cyclone first end, a cyclone air outlet and a cyclone longitudinal axis extending from the cyclone first end to the cyclone second end, wherein a cyclone chamber is located between the cyclone first and second ends
Implementation Method 2
dirt which is separated from the air swirling in the cyclone chamber
Data Source
AI summary
A cyclonic air treatment member comprises a cyclone and a dirt collection chamber external to the cyclone chamber. The dirt collection chamber has first and second discrete dirt outlet regions, each dirt outlet region extending around a portion of the perimeter of the cyclone chamber. The second dirt outlet region is positioned proximate the cyclone second end, and the first dirt outlet region is positioned toward the cyclone first end relative to the second dirt outlet region.