Cylindrical Air Filter With Spiral Baffle For Oily Mist Separation
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Solution Overview
Problem
Conventional air filtering devices are complex and costly, making maintenance difficult and expensive, and there is a need for a simpler, low-cost solution that maintains optimal functionality for filtering air contaminated with solid particles, liquids, mists, vapors, and aerosols.
Innovation Solution
A cylindrical filtering device with a spiral baffle and a reduced-pressure chamber, featuring a metal or composite enclosure, a conveyance spiral, and a centrifugal fan system that separates liquids and solids through centrifugation and guides liquids to a drainage port, while allowing filtered air to exit through a disk-like closure element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional filtering devices are used, then air filtration function is provided, but device complexity increases and maintenance becomes difficult
Solution Approach 1:
The device is divided into distinct functional modules: a filtering assembly with removable filters, a centrifugal separation system with spiral baffle, and a drainage system. This segmentation allows independent maintenance of each module, simplifying overall device complexity while maintaining comprehensive air filtration functionality.
Solution Approach 2:
The filtering assembly is designed to be extractable from the containment enclosure, allowing filters to be removed and replaced without disassembling the entire device. This extraction capability maintains effective air filtration while significantly reducing maintenance complexity.
2Reliability
If conventional filtering devices are used, then air filtration is achieved, but manufacturing cost increases
Solution Approach 1:
The containment enclosure serves multiple functions: it houses the filtering assembly, contains the centrifugal separation system with spiral baffle, and incorporates the drainage system. This multi-functionality reduces the number of separate components needed, lowering manufacturing cost while maintaining effective air filtration.
Solution Approach 2:
The intake manifold and discharge manifold are integrated into the containment enclosure structure, and the spiral baffle is formed as a single piece. This merging of components simplifies manufacturing processes and reduces overall manufacturing cost while preserving filtration effectiveness.
3Reliability
If conventional filtering devices are used, then filtration is performed, but maintenance time increases
Solution Approach 1:
The filtering assembly is pre-configured as a complete, removable unit with filters already installed. This preliminary preparation allows maintenance personnel to quickly remove and replace the entire filtering assembly without needing to disassemble or reconfigure components during maintenance, significantly reducing maintenance time while ensuring proper filtration function.
4Ease of manufacture
If simple filtering structure is used, then manufacturing cost decreases, but liquid separation efficiency worsens
Solution Approach 1:
A spiral baffle in the shape of an inclined plane is formed as a single piece within the containment enclosure. The curved spiral geometry creates centrifugal force that effectively separates liquids from air flow. This single-piece curved structure is manufacturable using standard forming processes while achieving high liquid separation efficiency through its geometric design.
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 device simplifies maintenance and reduces costs while ensuring effective separation and filtration of air contaminants, facilitating easy liquid drainage and maintaining optimal air filtration performance.
Implementation Method 1
a conveyance spiral (5) that is arranged in direct contact with the inner surface of the enclosure (2)... which separates liquids and solids through centrifugation and guides liquids to a drainage port
Implementation Method 2
a reduced-pressure chamber, below the element (8) of the electric motor (9), which is a region of reduced pressure at the discharge holes (13)
Data Source
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AI summary
A filtering device, particularly for filtering air contaminated by oily mists, vapors, aerosols and the like, comprising a cylindrical containment enclosure that is provided with a closure element that is provided with an air intake, a filtering assembly being accommodated inside the containment enclosure, the device further comprising a conveyance spiral that is arranged axially inside the containment enclosure and in contact with an inner surface of the enclosure.