Radial Star-Shaped Filter Bellows for Engine Air Filtration
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Solution Overview
Problem
Existing air filters for internal combustion engines face challenges in achieving high filtration efficiency with complex constructions and high maintenance costs, requiring efficient filtration solutions that minimize service expenditure.
Innovation Solution
A filter device with a multi-bellows filter configuration, featuring radially nested star-shaped filter bellows and a sealing ring for fluid-tight separation, allowing for radial and axial flow options through the filter element, which is designed for easy insertion and maintenance within a filter housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex multi-part filter configuration is used to achieve high filtration efficiency, then filtration performance is improved, but device complexity and maintenance costs increase
Solution Approach 1:
The patent combines multiple filter stages (coarse filter, fine filter, and activated carbon filter) into a single integrated filter cartridge assembly. This merging approach maintains high filtration efficiency while reducing the number of separate components, simplifying the overall device structure and lowering maintenance requirements compared to multi-part configurations.
Solution Approach 2:
The filter elements are arranged in a nested configuration within the filter cartridge, with each filter stage positioned concentrically or sequentially within the same housing. This nesting approach allows multiple filtration functions to be packed into a compact space, achieving high filtration efficiency without proportionally increasing device complexity.
2Reliability
If a complex multi-part filter configuration is used to achieve high filtration efficiency, then filtration performance is improved, but maintenance expenditure increases
Solution Approach 1:
By merging all filter stages into a single replaceable cartridge, the patent eliminates the need for separate maintenance of multiple filter components. Users can replace the entire filter assembly as one unit, significantly reducing maintenance time, labor costs, and complexity compared to servicing multiple separate filter parts.
Solution Approach 2:
The integrated filter cartridge is designed as a disposable or easily replaceable unit with a specified service life. This approach eliminates the need for complex maintenance procedures and expensive repair operations, allowing users to simply replace the entire filter assembly when it reaches the end of its effective life, thereby reducing long-term maintenance expenditures.
3Ease of repair
If radial insertion of filter element is implemented for easy maintenance, then ease of service is improved, but sealing reliability may worsen
Solution Approach 1:
The filter cartridge is designed as a segmented assembly with distinct components (filter elements, sealing rings, support structures) that can be independently manufactured and assembled. This segmentation allows for precise manufacturing of sealing surfaces and easier replacement of individual components, maintaining sealing reliability while enabling straightforward radial insertion and removal.
Solution Approach 2:
The filter cartridge is pre-assembled with sealing rings and filter elements in the correct positions before installation. This preliminary assembly ensures that sealing surfaces are properly positioned and pre-compressed, guaranteeing reliable sealing upon radial insertion into the filter housing without requiring complex alignment procedures during installation.
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 multi-bellows filter design enhances filtration efficiency while reducing maintenance costs by allowing for efficient fluid flow management and easy service, ensuring effective separation of unfiltered and filtered fluids without leakage, thus improving overall filtration performance.
Implementation Method 1
Zwischen dem Filterelement und der Innenseite des Filtergehäuses ein Dichtelement angeordnet ist, das eine Fluid-dichte Trennung der unfilterten Seite von der gefilterten Seite des Filterelements gewährleistet
Implementation Method 2
Filtervorrichtung mit einem in einem Filtergehäuse untergebrachten Filterelement, bei dem ein Mehrfach-Schlackens-Filter, insbesondere ein Doppel-Schlackens-Filter
Data Source
AI summary
A filter device comprises a filter element that is comprised of at least two radially nested filter bellows, wherein at least one filter bellows is to be flown through in the radial direction and a flow space for the fluid is formed between the filter bellows. Each filter bellows is embodied as a star-shaped filter with filter folds arranged in a star shape. On at least one end face of the filter element a sealing ring is arranged between a filter bellows and the filter housing.