Bottom-Inlet Cyclone Separator to Prevent Filter Blocking

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Solution Overview

Problem

Cyclone separators in dust collectors face issues with dust adhering to central filters due to poor air intake design, leading to reduced dust-collection efficiency and increased maintenance costs.

Innovation Solution

A cyclone separator with a bottom wind intake and spiral airflow guidance, where air with dust enters in a direction away from the filter, utilizing a wind guiding plate and shielding plate to enhance centrifugal separation and prevent dust from adhering to the filter, while improving sealing and reducing filter cleaning frequency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If air with dust enters from the side wall of the cyclone, then the cyclone can collect dust, but the dust tends to adhere to the central filter blocking it

Engineering Contradiction:
Improvedust collection efficiencyVSAvoidfilter blocking
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent inverts the conventional air intake location from the side wall to the bottom of the cyclone. The air inlet is positioned at the bottom wall, and air enters upward along the inner wall in reverse spiral direction, which changes the airflow pattern so that dust is thrown outward and downward away from the central filter, preventing filter blocking while maintaining dust collection efficiency

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The patent introduces a vertical dimension to the airflow by positioning the air inlet at the bottom and directing air upward along the inner wall. This creates a three-dimensional reverse spiral flow pattern that separates dust deposition zones from the central filter area, effectively preventing dust accumulation on the filter while maintaining separation efficiency

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Device complexity

If the cyclone has a cylinder shape, then the structure is simple, but the sealing between air inlet pipe and cyclone is poor

Engineering Contradiction:
Improvecyclone structureVSAvoidsealing performance
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent segments the air inlet structure into multiple components: the bottom wall with integrated air inlet, the air inlet pipe, and sealing elements positioned at the junction. This segmentation allows for dedicated sealing features to be incorporated without complicating the overall cylindrical structure, achieving both simplicity and effective sealing

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces sealing elements as intermediary components between the air inlet pipe and the cyclone bottom wall. These sealing elements act as mediators that ensure tight sealing at the junction without requiring complex structural modifications to the cylindrical cyclone body, thus maintaining structural simplicity while improving sealing performance

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution effectively prevents filter blocking, prolongs filter life, enhances dust separation efficiency, and reduces the frequency of filter cleaning, maintaining high suction performance and lowering operational costs.

Implementation Method 1

air with dust entering the cyclone in a direction away from the filter turns into a spiral airflow quickly, and the dust is thrown away from the filter under a centrifugal force

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

a wind guiding structure in which the airflow goes upwards in the spiral shape is adopted, so that a position in which the dust is thrown out is moved upwards to the most extent

Methodology Applied
Scientific EffectSpiral airflow: Vortex Ring

Data Source

PatentUS9451860B2Cyclone separator
Publication Date: 2016.09.27 JIANGSU MIDEA CLEANING APPLIANCES
  • US9451860B2 patent drawing
  • US9451860B2 patent drawing
  • US9451860B2 patent drawing

AI summary

A cyclone separator is provided. The cyclone separator includes: a cyclone, an end cover of the cyclone separator, a filter and a wind guiding cylinder. The cyclone has an open end and a bottom wall defining an inlet of the cyclone separator therein. The end cover of the cyclone separator is disposed over the cyclone and defines an outlet of the cyclone separator therein. The filter has an upper end communicating with the outlet of the cyclone separator and a lower end extended into the cyclone. The wind guiding cylinder has a lower end communicating with the inlet of the cyclone separator, a closed upper end and a side wall defining a vent communicating with the cyclone.