Filter Frame Single-Cavity Design for Compact Air Handling Units
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Solution Overview
Problem
Existing air handling unit filter frames are not compact enough and require complex maintenance procedures, leading to space inefficiencies and increased operational costs due to the need for multiple cavities and securing mechanisms.
Innovation Solution
A filter frame design featuring a single cavity with a removable lid that secures multiple filter cells together using biasing elements, eliminating the need for separate cavities and simplifying maintenance by allowing tool-free filter cell replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple cavities and securing mechanisms are used to hold filter cells, then filter cells can be securely held in place, but the filter frame becomes larger and more complex
Solution Approach 1:
The patent merges multiple separate cavities into a single integrated cavity that can accommodate multiple filter cells. The single cavity design eliminates the need for multiple separate securing mechanisms, thereby reducing the overall filter frame size while maintaining the ability to securely hold multiple filter cells in place.
Solution Approach 2:
The single cavity is designed to serve multiple functions: it simultaneously holds multiple filter cells of different sizes and types, provides secure mounting through integrated positioning features, and allows for flexible configuration. This multi-functional design replaces what would traditionally require multiple specialized cavities and securing mechanisms.
2Reliability
If multiple cavities and securing mechanisms are used to hold filter cells, then filter cells can be securely held in place, but the filter frame structure becomes more complex
Solution Approach 1:
The patent combines multiple separate cavities and their associated securing mechanisms into a single integrated cavity structure. This merging eliminates the complexity of multiple separate mounting systems while maintaining secure filter cell holding through integrated positioning features within the single cavity.
Solution Approach 2:
While the cavity is single and integrated, the cavity includes segmented positioning features such as multiple ribs and positioning elements that can independently secure different filter cells. This segmentation within the unified structure allows complex securing functionality without adding overall structural complexity.
3Reliability
If traditional securing mechanisms are used, then filter cells can be held in place, but maintenance procedures become complex and time-consuming
Solution Approach 1:
The patent employs a dynamic securing mechanism where the cavity includes movable positioning elements such as ribs that can flexibly adapt to different filter cell configurations. This dynamic design allows filter cells to be easily inserted and removed without complex fastening procedures, while still maintaining secure retention during operation.
Solution Approach 2:
The cavity design includes self-positioning features such as ribs and positioning elements that automatically secure filter cells in place without requiring additional securing mechanisms or complex assembly procedures. This self-service design simplifies maintenance by allowing filter cells to be easily installed and removed through simple placement actions.
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 design results in a more compact filter frame that reduces air leakage and noise, while facilitating easy maintenance and reducing the need for complex securing mechanisms, enhancing operational efficiency and space utilization.
Implementation Method 1
The resiliently biased spring member is configured to provide a spring force urging the plurality of filter cells into the cavity
Data Source
AI summary
A filter frame for an air handling unit, an air handling unit, and a method of assembling a filter frame for an air handling unit. The filter frame (100) includes a holder (110) defining a cavity configured to receive a plurality of filter cells (201, 202; 201, 202, 203), and a removable lid (120) configured to secure the plurality of filter cells (201, 202; 201, 202, 203) in the cavity. The removable lid (120) can also include a biasing element (130) configured to urge the plurality of filter cells (201, 202; 201, 202, 203) together within the cavity, to assist with securing the plurality of filter cells (201, 202; 201, 202, 203) in the cavity.