Cyclone separation device

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Solution Overview

Problem

Conventional cyclone separation devices suffer from a re-entrainment phenomenon where foreign matters collected in the separation chamber are disturbed by swirling airflow and re-enter the swirl chamber, leading to a deterioration in separation performance.

Innovation Solution

The cyclone separation device incorporates a cylindrical case with a space partition plate and a cylindrical member, where the airflow and foreign matters are separated into distinct swirl chambers, with the cylindrical member positioned to prevent re-entrainment by using centrifugal and inertial forces to keep foreign matters within the separation chamber, and a second intake port for external air to discharge collected foreign matters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the through-hole provides communication between the swirl chamber and separation chamber, then foreign matters can be separated into the separation chamber, but the swirling airflow disturbs the collected foreign matters causing re-entrainment and deteriorating separation performance

Engineering Contradiction:

Improveseparation performanceVSAvoidre-entrainment phenomenon

Core Design Contradiction:

Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The device is divided into three distinct chambers: first swirl chamber, second swirl chamber, and separation chamber. The space partition plate creates these segmented regions, allowing foreign matters to be progressively separated and contained in the separation chamber while preventing re-entrainment through the structured communication paths between chambers.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cylindrical member acts as an intermediary structure positioned in the first swirl chamber. It intercepts swirling airflow before it reaches the separation chamber, preventing the disturbed airflow from carrying collected foreign matters back into the swirl chamber through the through-hole.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-generated harmful factors

If the cylindrical member is positioned to block the through-hole, then re-entrainment is prevented, but the airflow path between chambers is restricted

Engineering Contradiction:

Improvere-entrainment preventionVSAvoidpressure loss

Core Design Contradiction:

Object-generated harmful factorsVSLoss of energy

Solution Approach 1:

The cylindrical member is strategically positioned only in the region where swirling airflow tends to carry foreign matters back toward the through-hole. It does not completely block the through-hole but rather addresses the specific local problem of re-entrainment while maintaining overall airflow communication between chambers.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The cylindrical member provides partial blocking of the through-hole region, which is sufficient to prevent re-entrainment of foreign matters without completely obstructing the airflow path. This partial action maintains energy efficiency while achieving the prevention goal.

Inventive Principle:

Principle #16Partial or excessive action

3Device complexity

If a single swirl chamber is used, then the device structure is simple, but foreign matters re-enter the outflow stream causing deterioration of separation performance

Engineering Contradiction:

Improvechamber structureVSAvoidseparation performance

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The single swirl chamber is segmented into a first swirl chamber and a second swirl chamber using the space partition plate. This segmentation allows foreign matters to be separated into a dedicated separation chamber while maintaining simple overall device structure with minimal additional components.

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

This design significantly improves separation performance by preventing foreign matters from re-entering the outflow stream, maintaining the separation efficiency and reducing pressure loss, while also functioning as a hood to protect air intakes from wind and rain.

Implementation Method 1

the swirling airflow in the swirl chamber partly flows into the separation chamber through the through-hole

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

foreign matters that have been collected in the separation chamber often get into the disturbed airflow and come back to the swirl chamber

Methodology Applied

Scientific EffectInertial force: Inertia

Data Source

PatentUS11167230B2Cyclone separation device

Publication Date: 2021.11.09 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

The cyclone separation device has a case (1), a space partition plate (7), and a cylindrical member (11). The case (1) is formed into a cylindrical shape and has a first intake port (4), an outflow port (6), and a second intake port (5).The first intake port (4) has a circumferential opening (2) circumferentially formed in a side surface on a side of the one end of the case (1), and a fixed blade (3) arranged along the circumferential opening (2). The outflow port (6) is disposed on a surface on the side of the one end and discharges the swirling airflow fed through the first intake port (4). The second intake port (5) is disposed on a side surface on a side of the other end opposite to the one end.