Multilayer Vent with Filter Members for Building Drainage
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Solution Overview
Problem
Trapped moisture behind building siding can cause significant issues like paint peeling, warped siding, and saturated house wrap, as existing venting solutions are not adequately designed for long-term durability and resistance to compression.
Innovation Solution
A building ventilation system with vent parts having multiple layers and non-linear cross members, featuring pentagonal-shaped vent passages and resilient filter members, is configured to be mounted between rainscreen wrap and exterior siding, allowing vertical venting and drainage while resisting compression and insect intrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple vent parts are stacked and attached together, then the structural integrity and resistance to compression are improved, but the device complexity increases
Solution Approach 1:
The filter member serves multiple functions simultaneously: it covers the vent openings to prevent insect intrusion, attaches multiple vent parts together through hinged connection, and provides structural reinforcement. This merging of functions reduces the need for separate attachment hardware while maintaining compressive strength.
Solution Approach 2:
The filter member is pre-formed with attachment features (such as hinges or bonding surfaces) that enable straightforward assembly of multiple vent parts. The resilient material is selected in advance to provide both filtering and structural properties, eliminating the need for additional fastening components.
2Object-affected harmful factors
If resilient filter members are used to cover vent openings, then insect intrusion is prevented while maintaining airflow, but the manufacturing precision requirements increase
Solution Approach 1:
The filter member is constructed as a porous or mesh-like resilient material that allows airflow through its structure while physically blocking insects. The porosity is designed to provide adequate opening area for ventilation while the mesh size prevents insect entry, balancing manufacturing feasibility with functional requirements.
3Productivity
If vent passages are configured with non-linear cross members and multiple tiers, then venting and drainage effectiveness are improved, but the manufacturing complexity increases
Solution Approach 1:
The vent part is divided into multiple tiers or levels, each with its own vent passages and cross members. This segmentation allows moisture and air to be channeled through different pathways, improving drainage efficiency and preventing pooling. Each tier can be manufactured separately and then stacked, simplifying the overall manufacturing process despite the complex final geometry.
Solution Approach 2:
Non-linear cross members are used instead of straight linear elements, creating curved or angled pathways for airflow and water drainage. This curvature helps guide moisture along optimized flow paths and prevents stagnant areas, while the non-linear geometry can be achieved through molding or extrusion processes.
Data Source
AI summary
In one embodiment of the invention, a building ventilation system is provided that is configured to be mounted on a sides of a building structure between rainscreen wrap and exterior siding of the building for venting air in a gap between the rainscreen wrap and the siding ventilation system. The ventilation system includes a vent part including a plurality of vent passages, a longitudinal direction of the vent part configured to be mounted in substantially horizontal orientation at top and bottom edges of the sides of the building structure and a plurality of non-linear cross members extending between each ply. The plies and cross members define the vent passages, and includes at least two tiers or rows of vent passages. The passages run in a substantially vertical orientation to facilitate venting and draining of the gap.