Rainwater Filter Housing Assembly with Integrated Outlet Pipe

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Solution Overview

Problem

Existing rainwater filtration systems in rainwater chambers often clog easily due to contaminants, require frequent filter changes, and have complex structures that are costly to manufacture and maintain.

Innovation Solution

A rainwater filter housing assembly with a filter rod for easy filter installation and replacement, a simple and cost-effective design that can be retrofitted into existing rainwater chambers, and a system that allows for adjustable filtration effectiveness by using different filters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a filtering apparatus is implemented in rainwater chambers to retain contaminants, then the effectiveness of rainwater filtration is improved, but the filter clogs easily and requires frequent maintenance

Engineering Contradiction:
Improvefiltration effectivenessVSAvoidmaintenance difficulty
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The filter housing is divided into multiple chambers (first chamber, second chamber, third chamber) that can be independently accessed and maintained. Each chamber serves a specific function in the filtration process, allowing selective cleaning or replacement of filter elements without dismantling the entire system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system incorporates a self-cleaning mechanism where water flow through the filter elements automatically removes accumulated contaminants. The design allows the filtration system to maintain itself through normal operation, reducing the frequency and complexity of manual maintenance interventions.

Inventive Principle:
Principle #25Self-service

2Reliability

If a complex filtering apparatus is used to effectively filter rainwater, then the filtration performance is improved, but the manufacturing cost and structural complexity increase

Engineering Contradiction:
Improvefiltration performanceVSAvoidfilter structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The filter housing serves multiple functions: it contains the filter elements, provides structural support, facilitates water distribution, and enables maintenance access. The outlet pipe structure simultaneously serves as a connection element and a support for the filter housing, reducing the need for separate components.

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

Solution Approach 2:

The outlet pipe is integrated with the support structure for the filter housing, combining what would traditionally be separate components into a single unified element. This merging reduces the total number of parts, simplifies assembly, and lowers manufacturing costs while maintaining filtration effectiveness.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If a filtering apparatus is installed in existing rainwater chambers, then rainwater filtration is achieved, but the installation complexity and cost increase

Engineering Contradiction:
Improveretrofit capabilityVSAvoidinstallation cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The filter housing is designed with adjustable positioning capabilities, allowing it to be installed at different locations within the rainwater chamber depending on available space and outlet pipe configuration. This dynamic adaptability enables retrofitting into various existing chamber designs without requiring custom-engineered solutions for each installation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The integrated outlet pipe structure serves both as the water discharge connection and as the mounting support for the filter housing. This dual-function design eliminates the need for separate installation hardware and simplifies the retrofitting process, reducing both installation time and labor costs while maintaining effectiveness across different existing chamber types.

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

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 system effectively reduces contaminants in rainwater, is easy to maintain with low costs, and can be implemented in a large number of existing rainwater chambers, providing a cost-effective and efficient filtration solution.

Implementation Method 1

a filter housing defining a filtering volume, an outlet pipe for a sealed engagement to an outlet of a rainwater chamber, which outlet pipe is in fluid connection with the filtering volume of the filter housing, and a filter rod placed at least partially inside the filter housing and to connect to one or more than one filter(s)

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Data Source

PatentEP4556644A1Rainwater filter housing assembly
Publication Date: 2025.05.21 UPONOR INFRA OY
  • EP4556644A1 patent drawingFigure 1
  • EP4556644A1 patent drawingFigure 2
  • EP4556644A1 patent drawingFigure 3

AI summary

According to an example aspect, there is provided a rainwater filter housing assembly (100), comprising: an filter housing (110) defining a filtering volume, an outlet pipe (113) for a sealed engagement to an outlet (201) of a rainwater chamber (200), which outlet pipe (113) is in fluid connection with the filtering volume of the filter housing (110), and a filter rod (140) placed at least partially inside the filter housing (110) and to connect to one or more than one filter(s) (121, 122, 123) for installing the filter(s) (121, 122, 123) to and removing them from the filter housing (110).