Flexible Bag Fire Extinguisher With Pump-Driven Discharge

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Solution Overview

Problem

Existing fire extinguishing devices face challenges such as variable extinguishing agent flow due to mechanical energy storage device charge states, risk of explosion, and restricted installation options due to orientation dependencies, particularly in aviation and mobile applications.

Innovation Solution

A fire extinguishing device with a flexible bag-based extinguishing agent supply and a pump-driven nozzle system, where the flexible bag's volume change compensates for discharged agent, ensuring consistent flow and eliminating the need for propellants or mechanical energy storage, allowing operation regardless of orientation and position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If mechanical energy storage devices (springs, flexibly stretchable bags) are used to discharge extinguishing agent, then the device can be portable and manually operated, but the volume flow decreases as the device gets less charged and explosion risk increases

Engineering Contradiction:

Improveportability and manual operationVSAvoidconsistent volume flow and safety

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces mechanical energy storage devices (springs, stretchable bags) with an electric pump system. The pump actively controls the discharge of extinguishing agent through a riser tube, eliminating the passive mechanical discharge mechanism that causes variable flow and safety risks. This substitution provides reliable, consistent volume flow while maintaining portability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If compressed gases are used to dispense extinguishing agent, then the agent can be discharged through a nozzle, but the system cannot be used in aviation and requires regular maintenance of charge states

Engineering Contradiction:

Improvedischarge capabilityVSAvoidapplicability in aviation and maintenance requirements

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent replaces compressed gas systems with an electric pump-driven system. The pump actively controls the discharge process, eliminating dependence on compressed gases that are prohibited in aviation. This electrical actuation system is inherently safer for aviation applications and eliminates the need for regular maintenance of gas charge states.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The electric pump system provides universal applicability across different environments including aviation, where compressed gas systems are prohibited. The same pump mechanism can operate in aircraft, vehicles, and fixed installations, making the system versatile for multiple applications without requiring environment-specific modifications.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If suction systems with riser tubes are used to discharge extinguishing agent against gravity, then uniform volume flow is achieved, but the device function is restricted by orientation and installation position

Engineering Contradiction:

Improveuniform volume flowVSAvoidinstallation position and orientation flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent introduces a movable or adjustable riser tube arrangement that can adapt to different installation orientations. The riser tube is designed to function effectively regardless of the device's position, allowing the suction system to maintain uniform volume flow in various orientations including vertical, horizontal, and angled positions. This dynamic design enables flexible installation in different locations such as vehicles, mobile homes, and fixed facilities.

Inventive Principle:

Principle #15Dynamics

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 solution provides a reliable, safe, and compact fire extinguishing system with consistent agent discharge, suitable for various environments, including aviation, with reduced maintenance and production costs, and the ability to discharge the entire agent volume effectively.

Implementation Method 1

The dispensing device comprises at least one pump device (4)

Methodology Applied

Scientific EffectPump: Pump

Implementation Method 2

the bag device (9) has a flexible wall (10) at least in sections... the change in volume (26) of the bag device (9) corresponds substantially to the discharged volume (61) of extinguishing agent

Methodology Applied

Scientific EffectFlexible wall deformation: Elasticity

Data Source

PatentUS20220212045A1Extinguishing device and extinguishing method

Publication Date: 2022.07.07 MINERALKA D O O

AI summary

An extinguishing device and extinguishing method, including a dispensing device and an extinguishing agent supply. The dispensing device has a pump device and a nozzle device in order to dispense an extinguishing agent. The extinguishing device features the extinguishing agent supply including at least one bag device having a flexible wall.