Ventilation device for filtering air and for separating water aerosols from air
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ventilation devices for wind turbines suffer from uneven air flow distribution across filter elements, leading to rapid wear and inefficiencies in air cleaning and water aerosol separation, which complicates the protection of electronic components.
Innovation Solution
A ventilation device design featuring a one-piece plastic flow adapter that evenly distributes air flow across the filter element, combined with a modular structure and a discharge channel arrangement allowing gravity-driven water separation and drainage without additional force, enhancing the longevity of filter elements and simplifying maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air is fed through air ducts and expansion flow adapters to filter elements, then air can be introduced to the filtering system, but the air flow is unevenly distributed across the filter element leading to rapid wear
Solution Approach 1:
The flow adapter is designed with varying cross-sectional areas along its length, creating different flow characteristics in different regions. The adapter includes a first section with a larger cross-sectional area and a second section with a smaller cross-sectional area, which distributes air flow more evenly across the filter element surface, preventing localized over-pressurization and rapid wear
Solution Approach 2:
The patent changes the geometric parameters of the flow adapter by incorporating sections with different cross-sectional areas. This parameter variation optimizes the air flow distribution profile, ensuring uniform pressure and flow across the filter element while maintaining high productivity
2Ease of operation
If conventional ventilation devices are used, then air filtering can be performed, but the system requires complex water drainage solutions with additional force requirements
Solution Approach 1:
The flow adapter incorporates a collection area positioned at a lower elevation than the filter element, creating a gravity-driven water drainage path. This equipotential design allows condensed water to drain naturally from the filter element through the adapter without requiring additional pumps or forced drainage systems, simplifying the overall device complexity
Solution Approach 2:
The drainage system is designed to utilize the natural gravity field and the geometric configuration of the flow adapter itself. The collection area and downward slope inherent in the adapter design enable the system to drain water automatically without external intervention or additional mechanical components
3Productivity
If filter elements are subjected to uneven air flow, then air can be filtered, but the filter element lifespan is reduced due to rapid wear
Solution Approach 1:
The flow adapter's varying cross-sectional areas create localized flow optimization zones that distribute air pressure and velocity more uniformly across the filter element. This prevents localized stress concentrations and uneven wear, extending the filter element's operational lifespan while maintaining effective air filtering
Solution Approach 2:
The flow adapter pre-distributes and conditions the air flow before it reaches the filter element. By optimizing the flow profile upstream of the filter, the system prevents subsequent uneven loading and wear, thereby extending filter element life without compromising filtering productivity
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 ensures even air distribution across filter elements, prolongs their lifespan, simplifies water drainage, and allows for modular expansion and precise control of air flow, addressing the inefficiencies and wear issues in existing systems.
Implementation Method 1
allowing gravity-driven water separation and drainage without additional force
Implementation Method 2
The filter material can be hydrophobic, for example, and separate the water in the sucked-in air in a filtration zone
Implementation Method 3
The water separated in the filter element can then settle on the raw side of the filter element under the influence of gravity in a drainage zone of the filter element
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a ventilation device (1) for filtering air and separating water aerosols from air. The ventilation device (1) comprises at least one filter element (3), at least one housing (4), at least one blower (5), and at least one flow adapter (11). The at least one filter element (3) is positioned within the at least one housing (4) so that air flows through it from an inlet opening (8) to an outlet opening (9) of the at least one housing (4) in a flow direction (10). The at least one blower (5) is located downstream of the respective housing (4) at the outlet opening (9) in the flow direction (10), and the at least one flow adapter (11) is located upstream of the at least one housing (4) at the inlet opening (8) in the flow direction (10). According to the invention, the at least one flow adapter (11) is a single piece and preferably made of plastic.