Adsorber Element with Rigid Support for Low Pressure Loss
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Solution Overview
Problem
Existing air filter systems with adsorber elements face inefficiencies in adsorption and desorption performance due to limited surface area and unpredictable fluid flow, which can affect pressure loss and measurement accuracy in air-mass meters.
Innovation Solution
An adsorber element with a frame comprising a base plate and rigid sail-shaped support elements, where both sides of the adsorber medium are exposed to the fluid, increasing surface area and maintaining minimal pressure loss, and utilizing an activated carbon layer with a gas-permeable carrier and holding layers for enhanced adsorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the adsorber element uses a traditional design with limited surface area, then the pressure loss is minimal, but the adsorption and desorption performance is insufficient
Solution Approach 1:
The adsorber medium is arranged on both sides of the base plate, transitioning from a single-sided to a dual-sided configuration. This dimensional change effectively doubles the available surface area for adsorption without significantly increasing the pressure loss, as the fluid can access adsorber medium on both faces of the element.
Solution Approach 2:
The adsorber element is divided into multiple functional zones: the base plate with adsorber medium on both sides, and multiple rigid support elements that also carry adsorber medium. This segmentation creates numerous fluid access points and distributes the adsorption function across multiple surfaces, enhancing overall performance.
2Reliability
If the support elements are made flexible to increase adaptability, then the fluid flow path changes unpredictably, but the pressure loss increases significantly
Solution Approach 1:
The support elements are designed with rigid portions that maintain structural integrity and predictable flow paths, ensuring reliable operation. The rigidity is localized to specific structural regions while allowing the overall element to function effectively in the fluid flow environment.
3Ease of manufacture
If the base plate is made solid to provide structural support, then the manufacturing is simpler, but the fluid flow access to adsorber medium is restricted
Solution Approach 1:
The base plate is designed with a grid-like structure featuring numerous openings instead of being completely solid. This porous configuration allows fluid to access the adsorber medium on both sides of the base plate while maintaining sufficient structural support. The grid pattern balances manufacturing simplicity with enhanced fluid permeability.
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 enhances adsorption and desorption performance while maintaining low pressure loss, ensuring accurate air-mass meter readings and easy production and mounting, with the ability to effectively trap hydrocarbons in clean air flows.
Implementation Method 1
the adsorber element can be used as an HC trap in a clean air flow, in particular in a motor vehicle, in which back-diffusing hydrocarbons (HC) are to be adsorbed from the clean air
Implementation Method 2
the adsorber medium can comprise at least one activated carbon-containing layer, comprising a gas-permeable carrier layer on which an activated carbon layer is arranged
Data Source
AI summary
An adsorber element for a filter system is provided with a frame that has a base plate and one or more rigid support elements that project away from the base plate. An adsorber medium is disposed at the frame and arranged at least in sections of the base plate and at least in sections of the one or more rigid support elements. The filter system has a housing with an inlet and an outlet. The filter system is flowed through by a gaseous fluid from the inlet to the outlet. A filter element is arranged in the housing between inlet and outlet. The adsorber element is arranged in the housing preferably downstream of the filter element.