Helical Air Filter Support Prevents Collapse
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Solution Overview
Problem
Existing air filters for heavy-duty transportation and internal combustion engines face inefficiencies due to the expanded metal inner support layer, which increases air resistance and restricts airflow, leading to suboptimal engine performance despite providing structural support against collapse.
Innovation Solution
A helical or ring-shaped inner support made from resilient materials like spring steel is integrated into the air filter to prevent collapse while minimizing surface area obstruction, allowing for maximum airflow and improved engine performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If expanded metal inner support layer is used, then structural support against collapse is provided, but air resistance increases and airflow is restricted
Solution Approach 1:
The patent removes the traditional expanded metal support layer from the air filter structure. Instead, it uses a helical support element that provides necessary structural support without the excessive surface area that caused high air resistance in expanded metal designs.
Solution Approach 2:
The patent changes the geometric parameters of the support structure from expanded metal's complex high-surface-area configuration to a simple helical shape with minimal surface area. This parameter change maintains structural support functionality while dramatically reducing air resistance.
2Reliability
If expanded metal inner support layer is used, then filter collapse prevention is achieved, but maximum air intake is prevented
Solution Approach 1:
The patent extracts the problematic expanded metal layer that simultaneously provided collapse prevention and restricted air intake. It replaces it with a minimal surface area helical support that prevents collapse without impeding air flow, thereby maximizing air intake capability.
Solution Approach 2:
The patent transitions from a two-dimensional expanded metal sheet to a three-dimensional helical structure. This dimensional change allows the support element to provide radial support against collapse while occupying minimal cross-sectional area, thus maximizing air intake.
3Strength
If expanded metal inner support layer is used, then structural support is provided, but surface area for air passage is increased
Solution Approach 1:
The patent removes the expanded metal layer with its excessive surface area. The helical support element provides the same structural support function with a fraction of the surface area, eliminating the harmful effect of increased area while maintaining support functionality.
Solution Approach 2:
The patent applies support functionality only where needed - radially against the filter media to prevent collapse - rather than using expanded metal's uniform high-surface-area approach. The helical structure provides localized support at critical stress points with minimal overall surface area.
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 enhances air filtration efficiency by preventing filter collapse and reducing air resistance, resulting in higher engine performance and consistent protection with superior structural support.
Implementation Method 1
The present invention replaces the existing expanded metal inner support layer with a streamlined method of inner support. In the present invention a helical (spiral shaped) inner support is installed on the inside of the filter media. The support provides radial support and prevents the filter from inwardly collapsing from the inward flow of air.
Implementation Method 2
the helical member is fixedly attached to the inside surface of the air filter with a bonding agent
Data Source
AI summary
An internal support for an air filter includes a helical member which is shaped and dimensioned to fit against the inside surface of the air filter to provide structural support which prevents the air filter from inwardly collapsing. In another embodiment of the invention, a plurality of support rings are installed in spaced apart parallel relationship inside the air filter.