Injection Adapter for Seamless Fire Suppression Cylinders

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Solution Overview

Problem

Seamless cylinders used in fire suppression systems lack provisions for connecting with separate storage containers containing pressurized gas, making the implementation of pressurized gas systems cumbersome and cost-intensive for propelling fire suppression agents.

Innovation Solution

An injection adapter is designed to be coaxially coupled to the container, featuring a discharge passage for fire suppression agents and injecting passages for pressurized gas, allowing fluid communication between the container's ullage space and a canister, facilitating efficient delivery of pressurized gas to enhance agent propulsion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If seamless cylinders are used for storing fire suppressing agents, then the container structure is simpler and more reliable, but the ability to connect with separate pressurized gas storage containers is lost

Engineering Contradiction:
Improvecontainer structure reliabilityVSAvoidconnection capability with pressurized gas system
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention divides the connection system into separate functional components: an injection adapter assembly that interfaces with the seamless cylinder and a separate pressurized gas storage container. This segmentation allows the seamless cylinder to maintain its structural integrity while adding connection capability through the adapter assembly with discharge passage and injecting passage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The injection adapter acts as an intermediary component between the seamless fire suppressing agent container and the separate pressurized gas storage container. It provides the connecting interface and fluid passages that enable interaction between the two previously incompatible systems, allowing pressurized gas to be introduced into the seamless cylinder.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If welded cylinders with welded bosses are used, then connection with pressurized gas containers is facilitated, but the manufacturing complexity and cost increase

Engineering Contradiction:
Improveconnection capability with pressurized gas systemVSAvoidcontainer manufacturing simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The invention extracts the connection functionality from the container body itself and places it in a separate, removable injection adapter assembly. This allows the seamless cylinder to be manufactured without complex welded bosses, while the connection capability is provided by the standalone adapter that can be attached when needed.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The injection adapter assembly serves multiple functions: it provides the connection interface for the pressurized gas container, creates fluid passages for gas injection, maintains sealing, and enables the seamless cylinder to function with both direct discharge and pressurized gas-assisted discharge modes.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Stress or pressure

If a separate storage container for pressurized gas is added to propel fire suppressing agent at higher pressure, then the discharge pressure and flow rate improve, but the system complexity and cost increase

Engineering Contradiction:
Improvepropellant pressureVSAvoidsystem structural complexity
Core Design Contradiction:
Stress or pressureVSDevice complexity

Solution Approach 1:

The invention merges the injection adapter, gas injection passages, and container interface into a single integrated assembly. This consolidation reduces the number of separate components and simplifies the overall system structure, making the addition of pressurized gas capability less complex than having entirely separate systems.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The injection adapter assembly is designed to nest within or attach to the existing container structure, with the pressurized gas container serving as an additional nested component. This nested arrangement minimizes spatial requirements and reduces system complexity compared to fully separate systems.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 injection adapter enables efficient and cost-effective delivery of pressurized gas to propel fire suppression agents, improving system efficiency and reducing costs by allowing a single opening connection for both agent discharge and gas injection, thus enhancing the fire suppression system's operational performance.

Implementation Method 1

The at least one injecting passage is adapted to supply pressurized gas from a canister to an ullage space within the container

Methodology Applied
Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 2

The inner surface defines the discharge passage adapted to be in fluid communication with a discharge valve assembly and a siphon tube inserted within the container

Methodology Applied
Scientific EffectFluid flow:

Data Source

PatentEP4378543A1An injection assembly for containers
Publication Date: 2024.06.05 KIDDE FENWAL LLC
  • EP4378543A1 patent drawingFigure 1
  • EP4378543A1 patent drawingFigure 2
  • EP4378543A1 patent drawingFigure 3a

AI summary

An injection assembly (402) having an injection adapter for injecting pressurized gas in containers (104) is disclosed. The injection adapter (402) comprises a body (406) adapted to be coaxially coupled to an opening of a container (104). The body (406) comprises a discharge passage (408) adapted to allow a flow of fire suppression agent from the container (104). Further, the body (406) comprises at least one injecting passage (410) adapted to be in fluid communication with an ullage space (120) of the container (104). The at least one injecting passage (410) is adapted to supply pressurized gas from a canister (106-1, 106-2) to the ullage space (120) within the container (102).