Buoyant Radio Module for Intelligent Fluid Filter Water Level Detection

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Solution Overview

Problem

Existing fluid filters with water separation capabilities lack the ability to provide intelligent water level detection and information beyond the water level, such as filter insert identification and operating parameters.

Innovation Solution

A filter insert with a buoyant radio module that floats on the water in the collection area, allowing for radio-based detection of the water level and provision of additional information through communication with a housing-side radio module.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If traditional water level sensors are used, then water level detection is achieved, but no additional information (filter identification, operating parameters) can be provided

Engineering Contradiction:
Improveinformation provisionVSAvoidsensor system
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The buoyant radio module serves multiple functions: it detects water level through its vertical position on the water surface, provides filter insert identification via stored identifiers, and communicates operating parameters. This multi-functional design eliminates the need for separate sensors for each function, reducing overall system complexity while expanding information capabilities.

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

Solution Approach 2:

The buoyant radio module acts as an intermediary between the water level detection mechanism and the housing-side radio module. It carries identification data and operating parameters, transferring this information wirelessly to the housing control system, thereby enabling comprehensive monitoring without complex wiring or multiple discrete sensors.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a buoyant radio module is added to provide intelligent detection, then water level detection and additional information are enabled, but the device complexity increases

Engineering Contradiction:
Improveintelligent detectionVSAvoidfilter insert structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The radio module is integrated with the buoyant element into a single combined component. This merging of the identification carrier, buoyancy mechanism, and communication device into one unit simplifies the overall filter insert structure while enabling intelligent detection capabilities. The unified design eliminates the need for separate mechanical water level indicators and identification tags.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces traditional mechanical water level sensors and visual inspection methods with a radio-based detection system. The buoyant radio module communicates wirelessly with the housing-side radio module, eliminating complex mechanical linkages, wiring, and manual inspection procedures, thereby improving ease of operation despite the added electronic component.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Extent of automation

If visual inspection through viewing window is used, then water level can be checked, but no automated monitoring or additional information is provided

Engineering Contradiction:
Improvewater level monitoringVSAvoidoperating parameters
Core Design Contradiction:
Extent of automationVSLoss of information

Solution Approach 1:

The buoyant radio module continuously monitors its vertical position on the water surface and automatically transmits water level data to the housing-side radio module. This automated feedback mechanism eliminates the need for manual visual inspection through viewing windows and provides continuous monitoring capability. The system additionally feedbacks identification and operating parameter information, comprehensive monitoring without human intervention.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The buoyant radio module is designed to autonomously perform detection and communication functions. It automatically floats on the water surface, senses its position, and transmits data without requiring external power connections or manual operation. This self-service capability enables automated monitoring while providing multiple data streams including water level, filter identification, and operating parameters.

Inventive Principle:
Principle #25Self-service

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

Enables intelligent water level detection and provides information beyond the water level, enhancing the operation of the fluid filter and the machine it is used in, while allowing for filter insert identification and monitoring of operating parameters.

Implementation Method 1

a buoyant radio module (32) which is designed to float on a quantity of water located in a water collection area (108) of the fluid filter

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Data Source

PatentEP4308267B1Filter insert for insertion into a filter housing
Publication Date: 2025.05.28 HENGST SE
  • EP4308267B1 patent drawingFigure 1
  • EP4308267B1 patent drawingFigure 2~3
  • EP4308267B1 patent drawingFigure 4

AI summary

The invention relates to a filter insert (10) for insertion into a filter housing (102) of a fluid filter (100), said filter insert comprising a filter material (14) which is designed so that, during operation of the fluid filter (100), a fluid to be filtered flows through from an unfiltered side (116) to a filtered side (118) of the fluid filter (100), and a buoyant radio module (32) which is designed so that, during operation of the fluid filter (100), it floats on a quantity of water located in a water collecting area (108) of the fluid filter (100).