Pressure-Driven Extinguishing Nozzle Adapter for Wall Mounting

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Solution Overview

Problem

Existing extinguishing nozzles mounted on walls protrude into confined spaces, obstructing airflow and impeding the circulation of gaseous mixtures, particularly in ducts, and require complex and error-prone mounting from inside the space.

Innovation Solution

An extinguishing nozzle adapter with a movable chamber and return spring mechanism allows the nozzle to retract when not in use, extending only during agent discharge, using extinguishing agent pressure to move between positions without additional driving force, and featuring positioning elements for correct orientation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the extinguishing nozzle is mounted to protrude into the space for effective extinguishing, then the extinguishing agent can be discharged directly into the space, but the nozzle obstructs airflow and impedes circulation of gaseous mixtures in confined spaces

Engineering Contradiction:

Improveextinguishing effectivenessVSAvoidairflow obstruction

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The extinguishing nozzle is made movable between a retracted position (flush with wall) and an advanced position (protruding into space). The nozzle is advanced only when needed for extinguishing, allowing it to maintain effectiveness while minimizing obstruction during normal operation. This dynamic positioning resolves the contradiction between needing protrusion for effectiveness and avoiding obstruction during idle periods.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If the extinguishing nozzle is mounted from inside the confined space, then proper positioning can be achieved, but the mounting process becomes difficult and error-prone

Engineering Contradiction:

Improvemounting positioning accuracyVSAvoidmounting difficulty

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

Instead of mounting the nozzle from inside the confined space, the adapter is mounted from outside the space on the wall. The nozzle is then inserted into the adapter from the outside, reversing the traditional mounting approach. This inversion allows technicians to perform mounting operations from accessible exterior locations, eliminating the difficulty of working inside confined spaces while maintaining precise positioning through the adapter's mounting features.

Inventive Principle:

Principle #13The other way round (Inversion)

3Speed

If the extinguishing nozzle remains extended into the space continuously, then it is ready for immediate extinguishing action, but it constantly obstructs airflow and requires additional spatial volume

Engineering Contradiction:

Improveresponse timeVSAvoidspatial occupation

Core Design Contradiction:

SpeedVSVolume of moving object

Solution Approach 1:

The nozzle transitions from a static extended position to a dynamic system that can retract and extend as needed. During normal operation, the nozzle retracts to minimize spatial occupation and eliminate continuous obstruction. When extinguishing is detected, the nozzle rapidly extends to the advanced position, providing immediate response capability. This dynamic behavior resolves the contradiction between maintaining readiness and minimizing spatial interference.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The nozzle operates in periodic cycles: extended during fire events for extinguishing, and retracted during normal operation. This periodic extension and retraction allows the system to maintain extinguishing capability while minimizing obstruction during the majority of operational time when no fire is present.

Inventive Principle:

Principle #19Periodic action

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 adapter minimizes spatial obstruction and simplifies mounting by allowing the nozzle to retract when not in use, ensuring unimpeded airflow and reliable operation with reduced installation errors.

Implementation Method 1

the adapter has a return spring which is operatively connected to the extinguishing nozzle and is designed to exert a restoring force in the direction of the retracted position on the extinguishing nozzle

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the extinguishing nozzle is movable back and forth between a first, retracted position and a second, advanced position, and is moved in the direction of the advanced position when the chamber is pressurized by means of the extinguishing agent

Methodology Applied

Scientific EffectPressure force: Pressure Increase

Data Source

PatentUS12453982B2Extinguishing nozzle adapter for fitting an extinguishing nozzle to a wall, and fire-fighting system comprising said extinguishing nozzle adapter

Publication Date: 2025.10.28 MINIMAX VIKING PATENT MANAGEMENT GMBH

AI summary

The invention relates to an extinguishing nozzle adapter for mounting an extinguishing nozzle on a wall, having a housing and a chamber for receiving an extinguishing nozzle, wherein the housing has an extinguishing agent connection to the chamber, via which connection the chamber is able to be pressurized with extinguishing agent, wherein the chamber is designed to receive the extinguishing nozzle in a movable manner such that the extinguishing nozzle is movable back and forth between a first, retracted position and a second, advanced position, and is moved in the direction of the advanced position when the chamber is pressurized by means of the extinguishing agent.