Sheltered Vent Structure for Brake Actuator Moisture Separation
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Solution Overview
Problem
Current gas-liquid separating devices for brake systems, such as air-water separating devices, face challenges in effectively preventing moisture, debris, and corrosive substances from entering the brake actuator housing, leading to premature spring failure and operational issues due to inadequate air-water separation and pressure equilibration methods.
Innovation Solution
A gas-liquid separating gas exchange device with a vent mechanism, sheltered area, and fluid-exchange passageway design that utilizes gravitational and vibrational forces to separate gas from liquid, allowing air exchange while expelling contaminants, featuring a flexible two-way venting valve and a base member with a positive-locking attachment mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If air holes are provided in the upper housing to allow air exchange between the chamber and outside atmosphere, then air exchange function is improved, but moisture and contaminants enter the housing causing corrosion and premature failure
Solution Approach 1:
A breather valve is introduced as an intermediary component between the housing interior and exterior atmosphere. The breather valve selectively permits air exchange while blocking moisture and contaminants through its valve mechanism that responds to pressure differentials, thus resolving the contradiction between needing air exchange and preventing harmful substance ingress.
Solution Approach 2:
The diaphragm serves as a flexible thin film that separates the upper and lower chambers while responding to pressure changes. This flexible membrane enables the system to maintain pressure equilibrium and control air exchange without allowing direct exposure to external contaminants, thus protecting the spring while maintaining operational functionality.
2Reliability
If the diaphragm moves to compress the main spring, then emergency brake function is achieved, but air must escape from the upper chamber which draws in moisture and contaminants
Solution Approach 1:
The breather valve acts as a controlled intermediary that manages air escape during spring compression. It allows air to exit the upper chamber in response to pressure changes while preventing moisture and contaminants from entering, thus enabling reliable emergency brake function without contaminant ingress.
Solution Approach 2:
The system dynamically responds to pressure changes during diaphragm movement. The breather valve opens and closes based on pressure differentials created during spring compression and expansion, enabling controlled air exchange that maintains reliability while preventing contaminant entry during operational cycles.
3Reliability
If air pressure is removed from the emergency brake chamber, then the brake engages via spring compression, but moisture and contaminants have already compromised the spring during the process
Solution Approach 1:
The breather valve serves as a protective intermediary that maintains a cleaner environment inside the housing during pressure changes. By controlling air exchange and blocking contaminants, it protects the spring from corrosion and damage, extending its lifespan while ensuring reliable brake engagement when air pressure is removed.
Solution Approach 2:
The system creates a relatively protected internal environment for the spring by using the breather valve to filter and control air exchange. This approach maintains a cleaner, more stable atmosphere inside the housing, reducing corrosive effects and extending spring durability while preserving brake engagement functionality.
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 effectively prevents moisture and debris from entering the brake actuator housing, reducing corrosion and extending the lifespan of components by ensuring efficient air-water separation and pressure management, thereby enhancing the reliability and durability of brake systems.
Implementation Method 1
A gas-liquid separating gas exchange device with a vent mechanism, sheltered area, and fluid-exchange passageway design that utilizes gravitational and vibrational forces to separate gas from liquid
Implementation Method 2
A gas-liquid separating gas exchange device with a vent mechanism, sheltered area, and fluid-exchange passageway design that utilizes gravitational and vibrational forces to separate gas from liquid
Data Source
AI summary
Described herein is a gas-liquid separating gas exchange device comprising a vent mechanism that services gas exchange between the interior and exterior of a housing, a shelter of the vent mechanism distal from the housing that provides shelter of a distal area around the vent mechanism, an area-encompassing abutment rising distally from the housing and encompassing both the vent mechanism and the shelter and creating a fluid-catchment junction between the shelter and the abutment, and at least one fluid-exchange passageway in the at least one shelter allowing fluid exchange between the distal sheltered area and the abutment into the fluid-catchment junction. The gas-liquid separating gas exchange device may separate gas and liquid by gravity, energy of vibration, air-pressure forces, or a combination thereof and facilitates expulsion of contaminating liquid and debris from the housing.