Telescopic Boiler Flue Pipe Anti-Decoupling Mechanism

Solution Overview

Problem

Telescopic end pipes for condensing boilers lack anti-decoupling means, leading to accidental decoupling during handling or exposure to vandalism, resulting in inefficiencies and safety issues.

Innovation Solution

Incorporation of a sawtooth profiled sealing ring that hooks onto hooks or teeth on the telescopic pipe elements, providing a reliable and economic anti-decoupling mechanism to prevent accidental disconnection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If telescopic end pipes are used to adjust length and avoid cutting, then installation time and productivity are improved, but the pipes become vulnerable to accidental decoupling and vandalism due to lack of anti-decoupling means

Engineering Contradiction:

Improveinstallation timeVSAvoidanti-decoupling capability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The sealing ring is merged with anti-decoupling features by integrating a sawtooth profile on its outer circumference. This combines the sealing function with the anti-decoupling function into a single component, eliminating the need for separate anti-decoupling mechanisms while maintaining both sealing effectiveness and protection against unauthorized removal

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The sawtooth profile on the sealing ring creates an asymmetric geometry with teeth having inclined faces. This asymmetric design allows the ring to be inserted easily in one direction while preventing removal in the opposite direction, as the teeth engage with corresponding features on the pipe to create mechanical interference that resists decoupling forces

Inventive Principle:

Principle #4Asymmetry

2Reliability

If anti-decoupling means are added to telescopic end pipes, then reliability and security are improved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improveanti-decoupling capabilityVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The sealing ring is merged with anti-decoupling features by integrating a sawtooth profile on its outer circumference. This combines the sealing function with the anti-decoupling function into a single component, eliminating the need for separate anti-decoupling mechanisms while maintaining both sealing effectiveness and protection against unauthorized removal

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The sealing ring serves multiple functions simultaneously: it provides the primary sealing function to prevent gas leakage, acts as an anti-decoupling mechanism through its sawtooth profile, and maintains structural integrity. This multi-functionality reduces the overall number of components needed in the system

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2000727B1Telescopic and anti-decoupling end pipe for condensing boiler flues

Publication Date: 2010.06.30 LN 2 S R L A SOCIO UNICO

Figure 1
Figure 2~5
Figure 6~9

AI summary

The present invention relates to an end pipe (A), of telescopic type, for discharging into the atmosphere the fumes produced by condensing boilers, said pipe being equipped with anti-decoupling means comprising hooks or teeth (6;9), provided on the male element (2,4) and suitable for hooking onto a packing ring (8), which is seated in a groove (7;10) provided in the female element (1,3) and having a sawtooth profile (8a) with the teeth inclined backwards with respect to the direction of extension of the male element.