Device for securing at least one insulation on a duct, duct equipped with said securing device

Solution Overview

Problem

Existing methods for securing insulation on aircraft ducts are inadequate as they require gluing, making it difficult to change the insulation without replacing the duct.

Innovation Solution

A securing device comprising an inner and outer ring with a transverse web, and linking parts with guiding and locking systems, allowing the insulation to be securely attached without gluing, enabling easy replacement of insulation tubes without altering the duct.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the insulation is glued onto the duct, then the insulation is securely attached, but it becomes difficult to change the insulation without replacing the duct

Engineering Contradiction:

Improvesecure attachmentVSAvoidease of insulation replacement

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The securing device is divided into separate components: an inner ring that fits on the duct, an outer ring, and a transverse web linking them. This segmentation allows the insulation to be secured by a removable mechanical device rather than permanent adhesion, enabling easy replacement of insulation without replacing the duct while maintaining secure attachment during operation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The securing device acts as an intermediary between the duct and the insulation. Instead of directly gluing the insulation to the duct, the securing device provides a mechanical attachment system with recesses that hold the insulation in place, allowing for easy removal and replacement while maintaining secure attachment during operation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If adhesive tape is used to secure the insulation, then the insulation is fixed in place, but the insulation cannot be easily changed

Engineering Contradiction:

Improveinsulation fixationVSAvoidtime for insulation replacement

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The securing device is divided into separate components: an inner ring that fits on the duct, an outer ring, and a transverse web linking them. This segmentation allows the insulation to be secured by a removable mechanical device rather than permanent adhesion, enabling easy replacement of insulation without replacing the duct while maintaining secure attachment during operation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent replaces the chemical bonding mechanism (adhesive tape) with a mechanical fastening system consisting of rings and a transverse web that create recesses to hold the insulation. This mechanical system allows for easy removal and reinstallation without the time-consuming process of removing and applying adhesive tape

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11460213B2Device for securing at least one insulation on a duct, duct equipped with said securing device

Publication Date: 2022.10.04 AIRBUS OPERATIONS (SAS)

AI summary

A device for securing at least one insulating tube on a duct, includes an inner ring configured to be mounted on the duct, an outer ring coaxial to the inner ring, and a transverse web linking the inner and outer rings, the inner and outer rings and the transverse web forming two recesses, arranged on either side of the transverse web, each configured to receive an end of an insulating tube.