Horizontal Filter Assembly with Coaxial Venting and Draining
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Solution Overview
Problem
In aerospace fluid distribution systems, integrated filter assemblies often experience fluid spillage when the removable filter unit is removed due to space constraints, as they are typically mounted horizontally, leading to challenges in efficient drainage and venting.
Innovation Solution
A filter assembly design featuring a cylindrical filter unit with coaxial fluid ports, a filter head with a horizontal interface, and a cylindrical sleeve with vent and drain ports, allowing for secure mating and easy sliding to establish fluid communication for drainage and venting without spillage, using a coupling mechanism to seal and unseal the ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the filter assembly is mounted horizontally to save space, then space utilization is improved, but fluid spillage occurs during filter unit removal
Solution Approach 1:
The harmful fluid is extracted from the filter unit through dedicated drainage paths (drain port and vent port) before the filter unit is fully removed. The drain port allows liquid fluid to drain out, while the vent port allows gas or vapor to escape, preventing spillage during removal operations.
Solution Approach 2:
The drainage and venting operations are performed preliminarily before the filter unit is completely removed from the filter head. By providing automatic drainage paths that activate when the coupling is loosened, the system prepares for removal by eliminating the spillage hazard in advance.
2Reliability
If the filter unit is securely coupled to the filter head, then sealing is improved, but drainage and venting operations become difficult
Solution Approach 1:
The coupling mechanism transitions from a fully sealed state to a partially open state during the drainage and venting operations. When the coupling is loosened but not fully removed, it creates an intermediate configuration where the drain port and vent port become accessible while the filter unit remains partially supported, enabling easy drainage and venting operations.
Solution Approach 2:
The coupling acts as an intermediary element that can be adjusted to different positions. By loosening the coupling rather than completely removing it, the operator can access the drainage and venting paths without fully disconnecting the filter unit, thus maintaining some sealing while enabling maintenance operations.
3Productivity
If multiple ports are provided for drainage and venting, then fluid removal is improved, but device complexity increases
Solution Approach 1:
The drain port and vent port serve multiple functions within the same structural framework. Both ports are integrated into the filter head assembly and work together to remove different phases of fluid (liquid and gas/vapor) through a unified drainage system, achieving multi-functionality without excessive complexity.
Data Source
AI summary
A filter assembly for filtering particulate contaminants from a fluid comprises: a generally cylindrical filter unit with one end closed and the other end open; a filter head comprising a generally cylindrical sleeve extending generally horizontally an open end for receiving the open end of the filter unit with that has a vent port aligned with a vertical axis through an upper portion of the sleeve and a drain port aligned with the vertical axis extending through a lower portion of the sleeve; and a coupling for securing the open end of the filter unit to the filter head to seal the sleeve vent and drain ports; wherein loosening the coupling allows the filter unit to slide away from the filter head sufficiently to establish fluid communication between the sleeve vent and drain ports.