Polygonal Filter Connector for Leak-Proof Multi-Size Pipe Coupling

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Solution Overview

Problem

Existing filtration systems face challenges in connecting pipes of varying diameters to filtration units, leading to potential leaks due to overpressure and requiring additional fittings, which are not universally adaptable.

Innovation Solution

A modular filtration system using interchangeable removable polygonal fittings, preferably octagonal, with O-ring seals and removable locks, allowing quick and secure connections between filter cartridges and pipes of different sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed cylindrical thread connection is used to connect pipes to filter heads, then the connection is simple and reliable, but it cannot adapt to pipes of different diameters and requires additional fittings

Engineering Contradiction:
Improveadaptability to different pipe diametersVSAvoidnumber of fittings required
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The filter head is designed with a universal polygonal connection interface that can accommodate multiple pipe diameters through a single fitting design. The polygonal shape with standardized dimensions allows different sized pipes to connect to the same filter head without requiring additional adaptation fittings, thus achieving multi-functionality and universality.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The connection interface transitions from a fixed cylindrical thread with a single diameter parameter to a polygonal interface where the key parameter is the polygonal shape dimension (e.g., octagonal outer diameter) that remains constant while accommodating variable pipe diameters through the removable adapter mechanism.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If traditional cylindrical threaded connections are used, then the assembly is straightforward, but the connection is vulnerable to leaks under overpressure conditions

Engineering Contradiction:
Improveseal reliability under overpressureVSAvoidassembly simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The connection system incorporates a removable lock that can be quickly engaged and disengaged, allowing the connection to be dynamically adjusted or replaced if sealing issues arise. This maintains ease of operation while improving reliability through the ability to quickly respond to overpressure conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

An O-ring seal is introduced as an intermediary element between the polygonal connection interface and the pipe/adapter, providing enhanced sealing capability under overpressure conditions while maintaining the simplicity of the overall assembly process.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If multiple specialized fittings are used to adapt to different pipe sizes, then all pipe diameters can be connected, but the installation time and costs increase

Engineering Contradiction:
Improvecompatibility with various pipe fittingsVSAvoidinstallation time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

A single polygonal connection interface design serves multiple pipe diameter requirements, eliminating the need for installers to select and install different specialized fittings for different pipe sizes. This universal interface significantly reduces installation time while maintaining full adaptability to various pipe fittings through the removable adapter mechanism.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The connection system is segmented into modular components: the permanent polygonal filter head interface and removable pipe adapters. This segmentation allows the time-consuming adaptation function to be separated into a simple removable component that can be quickly exchanged without affecting the main filter head installation.

Inventive Principle:
Principle #1Segmentation

4Ease of manufacture

If a fixed connection design is used, then manufacturing is simple, but the system cannot be easily modified or maintained

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidease of modification and maintenance
Core Design Contradiction:
Ease of manufactureVSEase of repair

Solution Approach 1:

The connection system is divided into permanent (filter head polygonal interface) and removable (pipe adapters and locks) segments. This segmentation maintains manufacturing simplicity for the main filter head while enabling easy modification and maintenance through the removable components that can be quickly exchanged without affecting the core filter unit.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The removable lock and adapter components introduce dynamic, reversible connectivity to the otherwise fixed filter head design. This allows the system to maintain manufacturing simplicity while enabling easy modification and maintenance through simple removal and reinstallation operations.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4011477B1Modular filter system with removable polygonal connector
Publication Date: 2026.04.15 HYDRO SYST HLDG
  • EP4011477B1 patent drawingFigure 1~3
  • EP4011477B1 patent drawingFigure 4~6a
  • EP4011477B1 patent drawingFigure 6b~7a

AI summary

The present invention relates to a filtration system comprising a filtration head having an inlet and an outlet, and at least one connector for connecting said filtration system to a filtration installation, said connector and said filtration head (4) each having a reciprocal connection means of polygonal shape to prevent rotation of said connector in case of high pressure of the flow of filtered liquid, by butting said connector against said head (4), via a sealing gasket, and at least one removable lock (1) for retaining said reciprocal connection means in said filtration head (4).