Replaceable Filter Media Holding Mechanism
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Solution Overview
Problem
The existing air filter assemblies in HVAC and gas turbine systems are costly to replace due to the need for replacing the entire rigid shell along with the media pack, leading to high replacement and shipping expenses.
Innovation Solution
A replaceable filter media and holding mechanism where the rigid plastic shell remains in place, and the media packs are insertible and removable, utilizing gaskets for sealing to prevent air bypass, allowing for bulk production and reduced costs by reusing the shell and minimizing material and shipping costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire filter assembly (shell and media pack) is replaced, then the filter assembly provides stable support and sealing, but the replacement cost and shipping cost increase significantly
Solution Approach 1:
The filter assembly is divided into two separable components: a reusable rigid shell and a replaceable media pack. The shell remains in place and is not replaced, while only the media pack is removed and replaced. This segmentation allows the expensive shell to be reused multiple times, significantly reducing replacement and shipping costs while maintaining the structural stability and sealing functions of the original assembly.
2Reliability
If the entire filter assembly is replaced, then the filter media is replaced when clogged, but the shipping cost and material cost increase
Solution Approach 1:
The media pack is extracted as a separate, independently replaceable component from the shell. This allows the media pack to be removed and replaced without disturbing or replacing the shell. The shell remains in place and is reused, reducing material consumption and manufacturing costs associated with producing new shells for each replacement cycle.
3Reliability
If the entire filter assembly is replaced, then the filter can be maintained, but the environmental impact increases due to disposal
Solution Approach 1:
The shell is recovered and reused for multiple media pack replacement cycles, while only the depleted media packs are discarded. This significantly reduces the volume of waste material compared to replacing entire assemblies, as the durable shell component is kept in service indefinitely. The media packs are the only components that require disposal after their service life, minimizing environmental impact from disposal operations.
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
This solution significantly reduces replacement and shipping costs by allowing the reuse of the plastic shell and media packs, while also minimizing environmental impact through reduced disposal costs and extending the assembly's lifespan by not frequently replacing the rigid pack.
Implementation Method 1
gaskets disposed at edges of each of the media packs to prevent airflow pathway bypass
Implementation Method 2
filter media disposed therein, air permeable faces on opposite sides of the filter media... position the filter media for filtering air flowing along the pathway
Data Source
AI summary
A replaceable filter media and holding mechanism apparatus is provided and includes a shell defining a pathway and an insertion bay and a body having filter media disposed therein, first and second air permeable faces on opposite sides of the filter media and first and second edge faces extending between corresponding ends of the first and second air permeable faces, the body being insertible into the insertion bay to position the filter media for filtering air flowing along the pathway with the first edge face leading the second edge face and being removable from the insertion bay with the second edge face leading the first edge face.