Air Filter With Segmented Primary And Secondary Air Outlets
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Solution Overview
Problem
Existing air filters with a secondary air outlet often interfere with the primary air outlet flow, and there is a need for an air filter that can provide filtered air independently to both outlets without requiring modifications to existing connection structures, especially for internal combustion engines.
Innovation Solution
An air filter design featuring a filter housing with a filter medium body that separates raw and clean sides, including a central primary air passage and radially arranged secondary air passages, which communicate through separate channels to maintain independent airflow to each outlet, ensuring that the primary air outlet flow is not significantly affected by the secondary air outlet flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a secondary air outlet is added to an existing air filter, then additional filtered air is provided for exhaust gas aftertreatment, but the primary air outlet flow is significantly affected and requires modifications to connection structures
Solution Approach 1:
The air filter divides the air outlet function into two independent segments: a primary air outlet connected to the primary air passage and a secondary air outlet connected to the secondary air passage. This segmentation allows each outlet to operate independently without interfering with the other, eliminating the need to modify existing connection structures while providing additional versatility.
Solution Approach 2:
The patent introduces a new dimension by adding a secondary air passage that runs parallel to the primary air passage through the filter element. This dimensional addition enables the secondary air outlet to draw filtered air independently from the primary outlet, avoiding conflicts in the existing connection structure while maintaining both functionalities.
2Adaptability or versatility
If a secondary air outlet is added to an existing air filter, then additional filtered air is provided for exhaust gas aftertreatment, but modifications to existing connection structures are required
Solution Approach 1:
The filter housing is segmented into distinct primary and secondary air outlet regions with separate connection interfaces. This segmentation allows the air filter to be installed as a complete unit without requiring modifications to existing connection structures, simplifying the installation process while providing enhanced versatility.
Solution Approach 2:
The air filter is designed with universal multi-functionality by incorporating both primary and secondary air outlets that can serve different purposes (combustion air and exhaust gas aftertreatment). This multi-functional design eliminates the need for separate filtration systems and avoids modifications to existing connection structures.
3Quantity of substance
If air flows through both primary and secondary outlets, then more filtered air is provided, but the velocity profile of primary airflow is disrupted
Solution Approach 1:
The air passage system is segmented into independent primary and secondary passages with separate flow paths. This segmentation ensures that air flowing through the secondary outlet does not disrupt the velocity profile of the primary airflow, as each passage maintains its own independent flow characteristics while collectively increasing the total filtered air volume.
Solution Approach 2:
The patent adds a secondary air passage in parallel to the primary passage, creating an additional dimension for airflow. This dimensional addition allows the system to increase total filtered air volume while maintaining the original velocity profile of the primary airflow through its dedicated passage.
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 design allows for independent supply of filtered air to both primary and secondary air outlets, maintaining the velocity profile of the primary airflow and enabling seamless integration with existing connection structures without modifications, while providing additional clean air for exhaust gas aftertreatment.
Implementation Method 1
a filter medium body (16) which surrounds annularly a longitudinal axis (18) of the filter element (14), wherein the filter medium body can be flowed through in radial direction from the exterior to the interior to a clean side in a region of an inner cavity of the filter medium body
Data Source
AI summary
An air filter has a filter housing having a raw air inlet and further has a filter element arranged in the filter housing. The filter element has a filter medium body and an end disk with a central primary air passage and a secondary air passage. The filter medium body annularly surrounds a longitudinal axis of the filter element and separates a raw side in the filter housing from a clean side inside the filter element. The filter housing has a primary air outlet communicating through the primary air passage with the clean side of the filter element. The filter housing has a secondary air outlet communicating through the secondary air passage with the clean side of the filter element. The secondary air outlet communicates with the secondary air passage through a channel arranged at the filter element, wherein the channel surrounds the primary air passage annularly and coaxially.