Moisture-Blocking Vent Structure for Continuous Natural Airflow

Solution Overview

Problem

Existing air ventilation systems for interior spaces, such as those in watercraft or vehicles, often fail to prevent small amounts of water from entering, leading to moisture-induced degradation and biological accumulation.

Innovation Solution

The air ventilation system incorporates a valve subsystem with floatable elements that automatically block liquid entry while allowing continuous air flow, ensuring the interior space remains dry.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional vents are used for continuous air flow, then ventilation is maintained, but liquid entry cannot be prevented

Engineering Contradiction:

Improveair flowVSAvoidliquid entry

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The vent system changes the physical state of the opening from always open to dynamically controlled, using floatable elements that respond to liquid presence by blocking the air windows. This parameter change allows the system to maintain air flow when dry while automatically preventing liquid entry when wet.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The floatable elements automatically detect and respond to liquid presence without external control, using buoyancy to close the ventilation openings when liquid is detected. This self-service mechanism eliminates the need for manual intervention or complex control systems while effectively preventing liquid entry.

Inventive Principle:

Principle #25Self-service

2Object-affected harmful factors

If automated shutters are used to prevent liquid entry, then watertightness is improved, but device complexity increases

Engineering Contradiction:

Improveliquid entryVSAvoidvalve system

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The floatable elements automatically detect and respond to liquid presence without external control, using buoyancy to close the ventilation openings when liquid is detected. This self-service mechanism eliminates the need for manual intervention or complex control systems while effectively preventing liquid entry.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The floatable elements act as intermediaries between the liquid environment and the ventilation system, using their buoyant properties to translate liquid presence into mechanical blocking action. This intermediary approach simplifies the overall system by using a passive physical mechanism rather than active control systems.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If manual shutters are used to prevent liquid entry, then watertightness is improved, but ease of operation decreases

Engineering Contradiction:

Improveliquid entryVSAvoidvent control

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The floatable elements automatically detect and respond to liquid presence without external control, using buoyancy to close the ventilation openings when liquid is detected. This self-service mechanism eliminates the need for manual intervention or complex control systems while effectively preventing liquid entry.

Inventive Principle:

Principle #25Self-service

4Ease of manufacture

If metal valves are used for ventilation control, then durability is reduced in extreme environments, but ease of manufacture is improved

Engineering Contradiction:

Improvevalve productionVSAvoidcorrosion resistance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The vent system changes the material composition from metal to non-metallic, corrosion-resistant materials such as plastics or composites. This parameter change maintains ease of manufacture while significantly improving reliability in extreme environments by eliminating corrosion susceptibility.

Inventive Principle:

Principle #35Parameter changes

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

This solution effectively maintains persistent, natural air circulation while preventing any liquid from entering the interior space, thereby preventing moisture-induced degradation and biological accumulation.

Implementation Method 1

a plurality of floatable elements positioned within the valve chamber, the plurality of floatable elements freely resting on a plurality of seats, respectively, when no liquid is present within the vent system

Methodology Applied

Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Data Source

PatentUS12297920B2Vent system for protection from moisture

Publication Date: 2025.05.13 BANAR OLEG T

AI summary

A ventilation system is provided for persistent natural ventilation by circulation of air between an interior space and an external environment. In one example, the ventilation system includes an air intake including a domed upper cover with exterior windows which allow air to circulate through an upper chamber, a baffle around floatable elements, the baffle including an annular protective screen and valve windows, a lower chamber fluidly coupled to each of the upper chamber via the baffle and an interior duct via a main window thereof, wherein the interior duct is fluidly coupled to the interior space, and wherein the floatable elements are positioned on respective seats when no liquid is present, each of the seats spaced a distance opposite to a respective one of the valve windows. Responsive to liquid entering the upper chamber via the exterior windows, the valve windows may be automatically blocked by the floatable elements.