Fire Suppressant Gas Outlet Layout for Thrust-Neutral Discharge

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Solution Overview

Problem

Existing fire suppressing gas generating devices face challenges in providing effective gas discharge while maintaining thrust neutrality, as they often lack optimal design for gas distribution and stability.

Innovation Solution

A fire suppressing gas generating device with a cylindrical housing having discharge openings orthogonal to its longitudinal axis, equipped with gas discharge channels and nozzles arranged orthogonally to provide thrust neutrality, and burst plates to seal the inner volume from the environment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If gas is discharged through a single opening or asymmetric arrangement, then gas discharge effectiveness is improved, but thrust neutrality is compromised

Engineering Contradiction:

Improvegas discharge effectivenessVSAvoidthrust neutrality

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The single discharge opening is segmented into multiple nozzles (at least two nozzles) arranged symmetrically around the gas discharge channel. Each nozzle discharges gas in a specific direction, and the symmetric arrangement ensures that thrust forces are balanced, achieving thrust neutrality while maintaining effective gas discharge for fire suppression.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The nozzles are arranged asymmetrically in terms of their orientation (with longitudinal axes generally orthogonal to the gas discharge channel axis) but symmetrically in terms of their spatial distribution around the channel. This allows optimized discharge patterns for fire suppression effectiveness while maintaining overall thrust balance through symmetric positioning.

Inventive Principle:

Principle #4Asymmetry

2Stability of the object's composition

If multiple nozzles are added to achieve thrust neutrality, then device complexity increases, but gas discharge effectiveness is maintained

Engineering Contradiction:

Improvethrust neutralityVSAvoidgas discharge channel structure

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

Multiple nozzles are merged into a single integrated gas discharge channel structure. The nozzles share a common channel body and are positioned around a central axis, forming a unified component rather than separate assemblies. This reduces overall device complexity while achieving thrust neutrality through the combined symmetric arrangement of nozzles.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The gas discharge channel serves multiple functions: it distributes generated gas to multiple nozzles, provides structural support for nozzle positioning, and acts as a thrust-balancing mechanism through its symmetric design. This multi-functionality reduces the need for additional separate components, simplifying the overall device structure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Stability of the object's composition

If nozzles are arranged orthogonally to the discharge channel, then thrust neutrality is achieved, but manufacturing precision requirements increase

Engineering Contradiction:

Improvethrust neutralityVSAvoidnozzle positioning and orientation

Core Design Contradiction:

Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The nozzles are arranged with their longitudinal axes generally orthogonal to the gas discharge channel axis, creating a symmetric configuration where all nozzles are equidistant from the central axis and oriented at equivalent angles. This equipotential arrangement simplifies the manufacturing process by providing a clear geometric reference system, reducing the actual precision requirements compared to asymmetric configurations.

Inventive Principle:

Principle #12Equipotentiality

Solution Approach 2:

The nozzle arrangement utilizes the radial dimension around the gas discharge channel, positioning nozzles in a circular pattern rather than linearly along the channel axis. This dimensional transition from linear to radial arrangement simplifies positioning, as nozzles can be mounted at equal angular intervals, reducing manufacturing complexity while maintaining thrust neutrality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12544607B2Fire suppressing gas generating device

Publication Date: 2026.02.10 N2 GLOBAL SIA

AI summary

Invention relates to fire suppressing gas generating devices, especially to a gas outflow management in the fire suppressing gas generating devices.A fire suppressing gas generating device comprising a cylindrical housing (1) having at least one discharge opening (13); a plurality of gas generating grains (2); an ignitor (5) associated with the gas generating grain (2) for ignition of said gas generating grain (2); a filter (6) encompassing the plurality of the gas generating grains (2); and at least one gas discharge channel (7) connected to the discharge opening (13). The gas discharge channel (7) further comprises at least two nozzles (17) opposed to each other creating thrust neutrality of discharged gas.