Air Ventilated Protection Suit Flat Duct Spiral Hose

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Solution Overview

Problem

Existing air ventilated protection suits face issues with air ducts becoming blocked due to high temperature and humidity, leading to impaired air supply, and pressure relief mechanisms that do not effectively manage internal pressure fluctuations during wearer movement.

Innovation Solution

The air ventilated protection suit incorporates a flat air duct with spirally cut hoses to maintain unimpeded airflow and pressure relief devices with air-guiding cases to manage pressure, along with an inspection port for ensuring airtightness and a seal flap system to prevent air entry during donning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a flat duct made of adhered plastic sheets is used to guide air, then the duct structure is simple and compact, but the duct becomes blocked when stored in high temperature and humidity environments

Engineering Contradiction:

Improveduct structureVSAvoidair supply

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The duct is segmented into multiple independent air channels formed by spaced apart upper and lower sheets, preventing complete blockage and maintaining air flow paths even when some channels are obstructed by moisture or heat

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the duct have different properties - the sheets are spaced apart in critical areas to prevent adhesion, while maintaining a flat overall structure. The duct includes expansion sections with greater spacing to prevent complete blockage

Inventive Principle:

Principle #3Local quality

2Speed

If air is quickly supplied into the protection suit, then oxygen-containing air is immediately available for the wearer to breathe, but the duct may become blocked in high temperature and humidity storage conditions

Engineering Contradiction:

Improveair supply speedVSAvoidduct functionality

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The duct is pre-configured with multiple air channels and expansion sections before use, ensuring that air can flow quickly when needed without requiring the duct to be unblocked during emergency situations

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The duct includes flexible sections and expansion areas that can dynamically adjust to prevent blockage, allowing the structure to maintain functionality under varying storage and operational conditions

Inventive Principle:

Principle #15Dynamics

3Stress or pressure

If check valves are provided to discharge instantaneous high pressure air, then pressure relief is achieved, but air may not be effectively guided out of the protection suit

Engineering Contradiction:

Improveinternal pressureVSAvoidpressure relief

Core Design Contradiction:

Stress or pressureVSEase of operation

Solution Approach 1:

Air-guiding cases are introduced as intermediary structures that receive air from pressure relief valves and guide it to external outlets, ensuring effective discharge of pressurized air from the protection suit

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The air-guiding cases provide additional spatial pathways for air discharge, directing pressure relief air in multiple directions away from the wearer through structured outlets

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Reliability

If the protection suit is sealed to maintain internal pressure, then protection against hazardous particles is improved, but air-tightness inspection becomes necessary before use

Engineering Contradiction:

Improveprotection integrityVSAvoidinspection requirement

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The protection suit includes built-in inspection ports and sealing flaps that enable the user to perform self-inspection of air-tightness before use, eliminating the need for external inspection equipment or complex procedures

Inventive Principle:

Principle #25Self-service

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

Ensures quick and uninterrupted air supply, effective pressure management, and safety through unblocked air ducts, airtight inspection, and controlled pressure relief, enhancing wearer safety in hazardous environments.

Implementation Method 1

air supplied via the air input port into the hoses pushes open the spiral cuts to flow from the hoses into the flat air duct via the push-opened spiral cuts

Methodology Applied

Scientific EffectPressure: Pressure Increase

Data Source

PatentUS8800068B2Air ventilated protection suit

Publication Date: 2014.08.12 RITE SAFETY ASSO

AI summary

An air ventilated protection suit includes an air input port, and a flat air duct connected to an inner end of the air input port. The flat air duct has hoses provided therein to separately extend in directions along which air is delivered to a whole interior of the protection suit. The hoses keep the flat air duct in an always unimpeded state, and respectively include an axially extended spiral cut, such that air supplied into the hosts pushes open the spiral cuts to flow from the hosts into the flat air duct via the push-opened spiral cuts. The protection suit also includes an inspection port to allow an air-tightness inspection of the protection suit before a wearer entering into a working environment; and an air-guiding case fitted around each pressure relief valve provided on the protection suit to provide a space for air released from the pressure relief valve.