Line Penetration Smoke Stopper with Modular Sealing Plug

Solution Overview

Problem

Existing line penetrations through building parts, such as walls and ceilings, fail to achieve absolute smoke imperviousness and require reconfiguration when modifying the line assembly, as the sealing materials, like molded foam parts, are displaced or destroyed during installation and removal.

Innovation Solution

A cylindrically shaped sealing plug integrated with a stiff annular member, attached to the jacket tube, provides a modular smoke stop solution that ensures complete smoke imperviousness and allows for easy adaptation without removal, featuring a star-shaped division for easy line routing and a conical cavity with guide grooves for effortless line introduction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If molded foam parts are used to seal the line penetration, then smoke imperviousness is improved, but the sealing material is displaced or destroyed during line installation and removal

Engineering Contradiction:

Improvesmoke imperviousnessVSAvoidsealing material integrity

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The sealing system is divided into multiple components: a rigid annular member that remains fixed in the jacket tube, and a separate cylindrical sealing plug that can be inserted and removed independently. This segmentation allows the sealing function to be maintained while enabling line installation and removal without destroying the entire sealing structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sealing plug is designed to be dynamically insertable and removable from the jacket tube, while the rigid annular member remains statically fixed. This dynamic design allows the sealing system to adapt to different operational states (installation, removal, sealing) without compromising smoke imperviousness.

Inventive Principle:

Principle #15Dynamics

2Reliability

If a cylindrical jacket tube with molded foam slabs is used, then fire-protection and sound insulation are achieved, but new cables cannot be inserted without removing and readapting the foam parts

Engineering Contradiction:

Improvefire-protection functionVSAvoidline modification capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The sealing system is divided into multiple components: a rigid annular member that remains fixed in the jacket tube, and a separate cylindrical sealing plug that can be inserted and removed independently. This segmentation allows the sealing function to be maintained while enabling line installation and removal without destroying the entire sealing structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rigid annular member is pre-installed in the jacket tube during line penetration construction, creating a prepared structure that later accommodates the sealing plug and various line configurations. This preliminary action enables future line modifications without requiring removal or readaptation of the foam parts.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If the sealing plug is integrated directly into the jacket tube, then smoke imperviousness is improved, but flexibility for adaptation is reduced

Engineering Contradiction:

Improvesmoke imperviousnessVSAvoidflexible adaptation

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The sealing system is divided into multiple components: a rigid annular member that remains fixed in the jacket tube, and a separate cylindrical sealing plug that can be inserted and removed independently. This segmentation allows the sealing function to be maintained while enabling line installation and removal without destroying the entire sealing structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cylindrical sealing plug is nested within the rigid annular member structure, with the sealing plug fitting into the space defined by the annular member. This nested configuration allows the sealing plug to be inserted and removed while the annular member remains fixed, providing both smoke imperviousness and adaptability.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS10487964B2Line leadthrough with integrated smoke stopper

Publication Date: 2019.11.26 HILTI AG

AI summary

A line penetration is useful for routing lines through a building part. The line penetration includes: a jacket tube, a base part, which is disposed at a first axial end of the jacket tube and has a receiving space, surrounding a routing opening, for a firestop material, an annular, membrane-like sealing element, which is disposed at the first axial end of the jacket tube, and at least one sealing plug, which is disposed at a second end of the jacket tube.