Cyclone Separator for Engine Anti-Ice Debris Management

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Solution Overview

Problem

Existing Engine Anti-Ice (EAI) systems face contamination issues due to the inefficiency of draining de-icing fluid and debris, leading to clogged discharge openings and potential system failure, resulting in costly downtime and maintenance.

Innovation Solution

A cyclone separator is introduced, utilizing a spiral plate to create a vortex that separates contaminants from clean air, with a high collection efficiency and continuous discharge of debris through a smaller weep hole, ensuring clean air is provided to the EAI system and reducing maintenance needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an orifice is added to drain liquid and debris using gravity forces, then the drainage function is provided, but the collection efficiency is very low and the discharge opening becomes clogged

Engineering Contradiction:
Improvedrainage functionVSAvoidcollection efficiency
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent replaces the gravity-based mechanical drainage system with a cyclone separator that uses centrifugal force generated by rotating airflow. The cyclone separator creates a vortex that separates liquid and debris from air flow through centrifugal forces, eliminating the need for gravity-dependent orifices and achieving high collection efficiency without clogging

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses pneumatic principles by introducing a cyclone separator that utilizes airflow dynamics to separate contaminants. The cyclone creates a vortex using air flow, generating centrifugal forces that separate liquid and debris particles from the air stream, replacing the need for gravity-based hydraulic drainage

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Productivity

If an orifice is used for drainage, then liquid and debris can be discharged, but the discharge opening becomes clogged leading to system failure

Engineering Contradiction:
Improvedrainage capabilityVSAvoidsystem operation continuity
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent replaces the mechanical orifice drainage system with a cyclone separator that continuously removes contaminants through centrifugal separation. This eliminates the clogging problem inherent in orifice systems while maintaining drainage capability, ensuring continuous system operation

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The cyclone separator provides continuous separation and discharge of contaminants throughout system operation. Unlike the intermittent and clogging-prone orifice system, the cyclone maintains continuous airflow and contaminant removal, preventing system failure and ensuring ongoing productivity

Inventive Principle:
Principle #20Continuity of useful action

3Ease of operation

If the existing drainage system is used, then initial drainage function is provided, but maintenance and cleaning become time-consuming

Engineering Contradiction:
Improveinitial drainage functionVSAvoidmaintenance time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the complex orifice drainage system requiring manual cleaning with a cyclone separator that self-cleans through continuous centrifugal separation. The cyclone's design allows contaminants to be continuously removed without manual intervention, eliminating maintenance time losses

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The cyclone separator performs self-maintenance by continuously separating and discharging contaminants through its operational airflow. The system cleans itself during normal operation, eliminating the need for manual cleaning and maintenance downtime, unlike the orifice system that requires periodic human intervention

Inventive Principle:
Principle #25Self-service

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 cyclone separator effectively separates contaminants from airflow, enhancing system reliability and reducing maintenance requirements by providing a continuous clean air stream and efficient debris collection, thus preventing contamination and system failures.

Implementation Method 1

a spiral plate in the contaminant separator creates a vortex that separates contaminants and clean air

Methodology Applied
Scientific EffectVortex: Vortex Ring

Implementation Method 2

a spiral plate in the contaminant separator creates a vortex that separates contaminants and clean air

Methodology Applied
Scientific EffectCentrifugal separation: Centrifugal Separation

Data Source

PatentUS7931740B2Cyclone separator
Publication Date: 2011.04.26 THE BOEING CO
  • US7931740B2 patent drawing
  • US7931740B2 patent drawing
  • US7931740B2 patent drawing

AI summary

Systems and methods for separating contaminants in a contaminated airstream are described. In one embodiment, a contaminated airstream is received and a vortex is created that separates the contaminated airstream into a clean airstream used in the system and contaminants (e.g., debris and particles).