Exhaust Line Vortex Generator for Particle Buildup Reduction

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Solution Overview

Problem

Flow disruption sites in exhaust systems impede the removal of gases and particles, leading to reduced pumping efficiency and increased maintenance due to particulate buildup, which affects the cleanliness and productivity of manufacturing equipment.

Innovation Solution

Incorporating a vortex generator into the exhaust system to impart rotational motion to the exhaust stream, enhancing particle pass-through at flow disruption sites by increasing flow velocity near the inner walls and reducing particle adhesion, combined with optional velocity boosters and flow regulators to manage flow velocity and maintain system efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If bends and connectors are used in exhaust lines to change flow direction, then exhaust flow can be routed to different locations, but flow velocity is reduced and pumping efficiency decreases

Engineering Contradiction:
Improveexhaust flow routingVSAvoidflow velocity
Core Design Contradiction:
Adaptability or versatilityVSSpeed

Solution Approach 1:

The patent uses smooth curved transitions instead of sharp bends to reduce flow disruption. The curved geometry allows exhaust to change direction while maintaining higher flow velocity and reducing turbulence compared to conventional sharp-angled bends.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Device complexity

If conventional exhaust lines are used without flow enhancement devices, then system simplicity is maintained, but particle buildup occurs at flow disruption sites reducing pumping efficiency

Engineering Contradiction:
Improveexhaust system structureVSAvoidpumping efficiency
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The vortex generator uses the kinetic energy of the passing exhaust flow itself to generate the vortex effect, without requiring external power sources or complex mechanical components. The exhaust flow automatically drives the vortex generation process, making the system self-sustaining.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention employs fluid dynamic principles by using the exhaust gas flow to create a vortex that enhances particle removal. The pneumatic action of the flowing exhaust generates rotational motion that prevents particle deposition at flow disruption sites.

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Reliability

If flow velocity is increased to prevent particle adhesion, then particle removal efficiency improves, but energy consumption increases

Engineering Contradiction:
Improveparticle removal efficiencyVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The vortex generator creates rotational motion and turbulence in the exhaust flow, which acts as a mechanical disturbance to prevent particle adhesion. This vortex-induced motion enhances particle removal efficiency by keeping particles suspended in the flow rather than allowing them to deposit on walls.

Inventive Principle:
Principle #18Mechanical vibration

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 vortex generator effectively reduces particle adhesion and buildup at flow disruption sites, enhancing particle removal efficiency and maintaining system functionality with reduced maintenance needs, thereby improving the overall productivity and cleanliness of manufacturing processes.

Implementation Method 1

Incorporating a vortex generator into the exhaust system to impart rotational motion to the exhaust stream

Methodology Applied
Scientific EffectVortex flow: Vortex Ring

Implementation Method 2

combined with optional velocity boosters and flow regulators to manage flow velocity

Methodology Applied
Scientific EffectVelocity boosting: Bernoulli Effect

Data Source

PatentUS11022018B2Exhaust system and method of using
Publication Date: 2021.06.01 TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
  • US11022018B2 patent drawing
  • US11022018B2 patent drawing
  • US11022018B2 patent drawing

AI summary

A vortex generator including an annular bearing for mounting on an interior surface of an exhaust line. The vortex generator further includes an annular blade assembly mounted on the annular bearing. The annular blade assembly includes a leading face with an upstream opening having a first radius. The annular blade assembly further includes a trailing face with a downstream opening having a second radius, wherein the upstream opening and the downstream opening are centered around a longitudinal axis of the exhaust line, and the second radius is different from the first radius. The annular blade assembly further includes a side extending from the leading face to the trailing face, wherein the side has a plurality of openings, each opening of the plurality of openings containing a blade, and each opening of the plurality of openings extends beyond the annular bearing in a direction parallel to the longitudinal axis.