Filtering Unit Coupling System for Fluid-Tight Seal

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Solution Overview

Problem

Existing filtering units with two stages face issues with leakage and incorrect positioning of the second antibacterial filter, leading to contamination and ineffectiveness in removing bacteria from water.

Innovation Solution

A filtering unit with a coupling system featuring engaging portions and seats, which ensures a fluid-tight seal and correct positioning of the second filter, preventing movement and contamination between the first and second filtration stages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fluid-tight seal is used to separate the first and second filtration stages, then leakage prevention is improved, but the seal may move or position incorrectly due to accidental impacts or imprecise assembly, leading to failure in maintaining separation

Engineering Contradiction:
Improveleakage preventionVSAvoidseal positioning stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The filtering unit is divided into distinct first and second portions, each housing a specific filter type (first filter and second antibacterial filter respectively). This segmentation allows independent positioning and sealing of each stage, ensuring that the fluid-tight seal effectively separates the two filtration processes without interference from the other stage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A fluid-tight seal acts as an intermediary element between the first and second portions of the filtering unit. This seal prevents direct communication between the two stages, ensuring that water must pass through both filters sequentially. The seal's design includes engagement features that prevent displacement, maintaining its mediating function even under impact or assembly variations.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If the second antibacterial filter is positioned without a coupling system, then assembly is simpler, but the filter may move or become mispositioned, causing leakage and contamination between stages

Engineering Contradiction:
Improveassembly simplicityVSAvoidfilter positioning accuracy
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The filtering unit is divided into distinct first and second portions, each housing a specific filter type (first filter and second antibacterial filter respectively). This segmentation allows independent positioning and sealing of each stage, ensuring that the fluid-tight seal effectively separates the two filtration processes without interference from the other stage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling system is designed with engaging portions and seats that guide the second filter into its correct position during assembly. This preliminary positioning action ensures proper alignment before the seal engages, preventing mispositioning and leakage while maintaining assembly simplicity through self-aligning features.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If the first and second filtration stages are not properly separated, then the structure is less complex, but bacteria present in water will not be removed, making the filtering unit dangerously useless

Engineering Contradiction:
Improvestructural complexityVSAvoidbacterial contamination
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The filtering unit is divided into distinct first and second portions, each housing a specific filter type (first filter and second antibacterial filter respectively). This segmentation allows independent positioning and sealing of each stage, ensuring that the fluid-tight seal effectively separates the two filtration processes without interference from the other stage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A fluid-tight seal acts as an intermediary element between the first and second portions of the filtering unit. This seal prevents direct communication between the two stages, ensuring that water must pass through both filters sequentially. The seal's design includes engagement features that prevent displacement, maintaining its mediating function even under impact or assembly variations.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution ensures a reliable fluid-tight seal, maintaining the division between the first and second filtration stages, effectively preventing bacterial contamination and ensuring the water is purified to optimal organoleptic standards.

Implementation Method 1

a fluid-tight seal (3) which separates the first section (14) and second section (15)

Methodology Applied
Scientific EffectFluid-tight sealing:

Implementation Method 2

a first filter (8) acting to improve the organoleptic properties of water

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 3

the first stage is composed by a mixture of ion exchange resin and activated carbon in order to reduce the hardness and the chlorine

Methodology Applied
Scientific EffectIon exchange: Ion Exchange

Implementation Method 4

the first stage is composed by a mixture of ion exchange resin and activated carbon

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 5

the second filtration stage, in order to be effective, has to be assembled in such a manner... all the liquid necessarily has to pass through the membrane filter

Methodology Applied
Scientific EffectMembrane filtration: Semipermeable Membrane

Implementation Method 6

The filter element which constitutes the second stage is of the type using a membrane for ultra-filtration or micro-filtration

Methodology Applied
Scientific EffectUltra-filtration:

Implementation Method 7

The filter element which constitutes the second stage is of the type using a membrane for ultra-filtration or micro-filtration

Methodology Applied
Scientific EffectMicro-filtration:

Data Source

PatentUS20250136469A1Filtering unit with two or more stages with engaging portions
Publication Date: 2025.05.01 LAICA SPA
  • US20250136469A1 patent drawing
  • US20250136469A1 patent drawing

AI summary

A filtering unit with two stages which comprises a main body which is subdivided into a first section comprising in turn a first filter and a second section comprising in turn a second filter; a coupling system for the second filter in turn comprising an external covering; a fluid-tight seal which separates the first section and second section. The coupling system prevents the movement of the second filter when it is fixed in a working position thereof and allows the fluid-tight seal to isolate the two sections without any risk of contamination.