Multi-Cyclone Dust Collector Design to Eliminate Filter Replacement

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Solution Overview

Problem

Conventional cyclone separators have limited dust filtration effectiveness, particularly in industrial applications, due to their bulky design and complex structure, which complicates maintenance and requires frequent shutdowns for filter replacement when dealing with hazardous gases.

Innovation Solution

A dust collecting device using multi-cyclone filtration with an airflow guiding component that creates multiple cyclones, increasing rotational speed and centrifugal force to separate smaller dust particles, eliminating the need for a filter screen and reducing maintenance downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the volume of chamber within the separation cylinder is increased to improve dust filtration effect, then the dust filtration effectiveness is improved, but the whole volume of the cyclone separator becomes bulky

Engineering Contradiction:
Improvedust filtration effectivenessVSAvoidwhole volume of cyclone separator
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The invention divides the single large cyclone chamber into multiple smaller cyclone chambers (first cyclone chamber, second cyclone chamber, third cyclone chamber, etc.). Each chamber contains a corresponding cyclone structure that processes gas independently. This segmentation allows the system to achieve the dust filtration effectiveness of a large chamber while maintaining a compact overall volume, as the multiple small chambers can be arranged efficiently within the housing.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a multi-layered dust filtering inner cylinder is provided within the separation cylinder to improve dust filtration effect, then the dust filtration effectiveness is improved, but the structure becomes complex and maintenance becomes difficult

Engineering Contradiction:
Improvedust filtration effectivenessVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Instead of using a complex multi-layered inner cylinder, the invention segments the filtration function into multiple independent cyclone chambers. Each cyclone chamber is a simple, self-contained structure with standard components (inlet, outlet, separation cylinder). This segmentation simplifies the overall structure compared to a multi-layered cylinder while achieving enhanced filtration through the combined effect of multiple cyclones.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention extracts the dust filtration function from a complex integrated structure and implements it through multiple simple cyclone chambers. Each cyclone chamber can be independently maintained or replaced without affecting the others, simplifying maintenance procedures compared to a multi-layered inner cylinder that would require disassembly of the entire structure.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If a multi-layered dust filtering inner cylinder is used to improve dust filtration effect, then the dust filtration effectiveness is improved, but periodic replacement of the dust filtering inner cylinder is required causing system shutdown

Engineering Contradiction:
Improvedust filtration effectivenessVSAvoidcontinuous operation capability
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The invention segments the dust filtration system into multiple independent cyclone chambers. When one chamber requires maintenance or filter replacement, the other chambers can continue to operate independently. This segmentation enables partial continuous operation during maintenance activities, maintaining productivity while ensuring dust filtration effectiveness through the remaining operational chambers.

Inventive Principle:
Principle #1Segmentation

4Device complexity

If a household dust suction device structure is adopted for industrial application, then the device is simple and small in volume, but the dust filtration effect does not meet industrial requirements

Engineering Contradiction:
Improvestructure simplicityVSAvoiddust filtration effectiveness
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The invention applies segmentation by using multiple cyclone chambers instead of a single large cyclone. This allows the system to maintain the structural simplicity and compact volume of household devices while achieving industrial-level dust filtration effectiveness through the combined capability of multiple cyclones working in parallel.

Inventive Principle:
Principle #1Segmentation

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 device achieves enhanced dust filtration efficiency, producing purer gas without the need for frequent filter replacements, and allows for continuous operation even in hazardous environments.

Implementation Method 1

cyclone separation is one kind of centrifugal sedimentation, in which centrifugal force is used to rotate particles at high speed in an eddy airflow

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

The cyclone chamber is provided with an annular side wall connected to the intake port and guiding the gas to be filtered to flow spirally so as to form a cyclone

Methodology Applied
Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 3

The higher the rotational speed is, the higher centrifugal sedimentation velocity the particles obtain

Methodology Applied
Scientific EffectCentrifugal sedimentation: Centrifugal Separation

Implementation Method 4

guiding the gas to be filtered to flow spirally so as to form a second cyclone

Methodology Applied
Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 5

The dust is incapable of being raised along with the updraft owing to its own force of gravity, and then settled to the bottom of the separation cylinder

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS11007541B2Dust collecting device using multi-cyclone dust filtration
Publication Date: 2021.05.18 XPOLE PRECISION TOOLS INC
  • US11007541B2 patent drawing
  • US11007541B2 patent drawing
  • US11007541B2 patent drawing

AI summary

A dust collecting device using multi-cyclone dust filtration includes a dust collecting chamber, cyclone chamber and airflow guiding component. The dust collecting chamber communicates with the cyclone chamber having an intake port for a gas to be filtered, an annular side wall connected to intake port and guiding gas to be filtered to form a first cyclone, an engaging port communicated with dust collecting chamber and allowing first cyclone to enter dust collecting chamber, and an exhaust port. The airflow guiding component within cyclone chamber is provided with a return flow tube receiving the returned gas to be filtered and forming a second cyclone, an airflow guiding bonnet separated from return flow tube, and a dust filtration channel between airflow guiding bonnet and return flow tube. The second cyclone flows toward the exhaust port, and enables dust therein to enter cyclone chamber again, as passing by dust filtration channel.