HVAC Filter-Housing Interface Geometry for Easier Installation
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Solution Overview
Problem
Existing air filtration systems for HVAC systems face challenges in simplifying filter element installation, reducing user error, and improving filter performance due to complex alignment requirements and pressure drop issues.
Innovation Solution
The design includes a filter-housing interface with rounded/curved interface members and a connecting member featuring a concave and convex portion, which facilitates ergonomic handling, proper orientation, and reduced friction during installation, while also enhancing flow performance by reducing pressure drop and increasing dust holding capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional flat interface members are used, then manufacturing is simple, but installation is difficult and user error increases due to complex alignment requirements
Solution Approach 1:
The interface members are designed with rounded or curved surfaces instead of flat surfaces. This curvature facilitates ergonomic handling by users and enables self-alignment with the housing during installation, thereby reducing user error and simplifying the installation process while maintaining structural effectiveness.
Solution Approach 2:
The interface members feature asymmetric geometries with specific rounded shapes that correspond to complementary receiving structures in the housing. This asymmetric design provides tactile and visual cues for correct orientation, ensuring proper alignment during installation without requiring complex alignment procedures.
2Loss of energy
If traditional straight connecting members are used, then structural simplicity is maintained, but flow performance deteriorates due to increased pressure drop
Solution Approach 1:
The connecting member incorporates concave and convex portions that create a curved, wave-like geometry instead of a straight configuration. This curved design reduces flow separation and turbulence in the air stream passing through the filter element, thereby reducing pressure drop and improving overall flow performance while maintaining structural integrity.
3Reliability
If filter elements are designed without integrated orientation features, then manufacturing is simpler, but user error increases due to lack of orientation guidance
Solution Approach 1:
The interface members and connecting members are designed with asymmetric geometries that provide built-in orientation guidance. The rounded shapes and specific configurations of these components allow users to easily identify and maintain the correct installation orientation, reducing user error and improving installation reliability without requiring separate orientation indicators or features.
Data Source
AI summary
A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media and a support element. The support element includes a first interface member, a second interface member, and a connecting member. The first interface member and the second interface member define opposing lateral ends of the support element and extend parallel to one another. The first interface member and the second interface member are engageable with complementary receiving structures of a rail to support the support element on the rail. The connecting member is coupled to the filter media and extends from the first interface member to the second interface member. The connecting member includes a concave portion extending from the first interface member and a convex portion extending from the second interface member.