Segmented Liquid Filter Cartridge With Removable Drainage Device
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Solution Overview
Problem
Existing filter cartridges for internal combustion engines lack flexibility during insertion and removal, leading to unnecessary activation of filtering functions and potential pollution when extracting non-filtered oil.
Innovation Solution
A modular cartridge filter design with a removable drainage device and connection means allows for independent rotation and attachment, enabling flexible use and preventing oil leakage during installation and removal, while allowing for separate maintenance and reuse of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cartridge filter is extracted from the filter housing, then the filtering function is deactivated, but the bleed channel opens causing non-filtered oil to drain and potentially pollute the filtered oil in the outlet channel
Solution Approach 1:
The cartridge filter is divided into multiple independent parts: a cartridge body containing the filtering material, a separate drainage device with connection means, and a base element. This segmentation allows the drainage device to remain attached to the filter housing while the cartridge body is removed, preventing oil leakage from the bleed channel during cartridge extraction.
Solution Approach 2:
The sealing pin is extracted from the cartridge filter and integrated into the drainage device that remains fixed to the filter housing. This ensures the bleed channel remains sealed even when the cartridge filter is removed for maintenance, eliminating the pollution problem while maintaining ease of cartridge replacement.
2Ease of manufacture
If the cartridge filter is designed as a single integrated unit, then manufacturing is simplified, but maintenance requires replacing the entire unit including reusable components
Solution Approach 1:
The cartridge filter system is segmented into replaceable cartridge body and permanent drainage device with connection means. This allows maintenance personnel to replace only the filtering element while retaining reusable components such as the drainage device, base element, and connection means, reducing maintenance costs and enabling component reuse.
Solution Approach 2:
The design enables selective discarding of the consumable cartridge body containing the filtering material while recovering and reusing the durable drainage device, base element, and connection means that remain attached to the filter housing, optimizing resource utilization and reducing waste.
3Device complexity
If the drainage device is permanently attached to the cartridge filter, then assembly is simplified, but the cartridge cannot be removed without removing the drainage device
Solution Approach 1:
The connection means are designed as separate elements that couple the drainage device to the base element of the cartridge filter. This segmentation allows the drainage device to be selectively attached or detached from the cartridge body, enabling independent removal of the cartridge filter while leaving the drainage device attached to the filter housing.
Solution Approach 2:
The connection means provide a dynamic coupling that can be engaged during assembly and disengaged during maintenance. This allows the system to transition between a connected state (during operation) and a separated state (during maintenance), providing both assembly simplicity and removal flexibility.
Data Source
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AI summary
Cartridge for filtering liquids (10) comprising a cartridge filter (11) and a drainage device (12) adapted to allow the passage of filtered liquid towards an outlet channel of the filter, said drainage device (12) being configured to be removably attachable to the cartridge filter (11).