Fluid Filter Baseplate Gasket Locator Design

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Solution Overview

Problem

Existing fluid filters face challenges in effectively sealing the interface between the end cap and the base plate, leading to potential fluid bypass and leakage, which compromises the filtration efficiency and reliability.

Innovation Solution

A gasket locator is integrated into the base plate to position, retain, and support an internal annular gasket between the end cap and the base plate, ensuring a secure seal and preventing fluid bypass by radially positioning and compressing the gasket, while also being designed to prevent overcompression.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an internal annular gasket is used to seal the interface between the end cap and base plate, then sealing effectiveness is improved, but the gasket may be improperly positioned or compressed leading to leakage

Engineering Contradiction:
Improvesealing effectivenessVSAvoidgasket positioning accuracy
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

A gasket locator is introduced as an intermediary component between the base plate and end cap. This locator features a positioning surface that precisely positions the gasket radially and axially, and a compression surface that applies controlled compression. The locator ensures proper gasket placement and compression without requiring high precision in the base plate or end cap manufacturing, thereby resolving the contradiction between sealing effectiveness and positioning accuracy.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the gasket is compressed to ensure sealing, then sealing effectiveness is improved, but overcompression may occur causing gasket failure

Engineering Contradiction:
Improvesealing effectivenessVSAvoidgasket integrity
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The compression surface of the gasket locator is designed with specific geometric parameters (angle, area, and height) that control the compression force. By optimizing these parameters, the system achieves sufficient compression for effective sealing while preventing overcompression that would compromise gasket integrity. The controlled compression parameters ensure the gasket maintains its sealing capability without failing.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If the gasket locator is integrally formed onto the base plate, then assembly complexity is reduced, but manufacturing precision requirements increase

Engineering Contradiction:
Improveassembly complexityVSAvoidintegral forming precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The gasket locator is designed as a separate component that can be independently manufactured and then assembled to the base plate. This segmentation allows each component to be optimized for its specific function without requiring high-precision integral forming. The locator can be produced using standard molding or machining processes, and then precisely positioned and secured to the base plate, reducing overall manufacturing complexity while maintaining positioning accuracy.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS8132675B2Filter having baseplate with internal gasket location
Publication Date: 2012.03.13 BALDWIN FILTERS INC
  • US8132675B2 patent drawing
  • US8132675B2 patent drawing
  • US8132675B2 patent drawing

AI summary

The present disclosure pertains to a fluid filter having a gasket locator such as a cylindrical wall on the underside of the baseplate which positions and supports an internal gasket.