Filter Frame Fixing Element for Easy Filter Replacement

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Solution Overview

Problem

Existing filter systems require complex assembly and disassembly processes due to the need for wire brackets that must be pressed down and laterally displaced, making the installation and removal of filter elements cumbersome and difficult.

Innovation Solution

Incorporating elastically designed or spring-loaded fixing elements with contact areas that can be temporarily displaced to insert or remove the filter element, automatically shifting back into a fixing position for secure retention, simplifying the installation and removal process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If wire brackets are used for fixing the filter element, then the filter element can be secured in the holding frame, but the assembly and disassembly process becomes complex requiring pressing down and lateral displacement

Engineering Contradiction:
Improvefixing securityVSAvoidassembly and disassembly ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The fixing element is designed as a spring-loaded dynamic component that can be temporarily displaced during assembly/disassembly and automatically returns to its fixing position, transforming a static complex mechanism into a dynamic self-adjusting one

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The fixing element automatically returns to its fixing position through its own restoring force after being displaced, without requiring manual intervention or additional tools, making the system self-servicing

Inventive Principle:
Principle #25Self-service

2Reliability

If wire brackets are used for fixing the filter element, then the filter element can be retained, but all wire brackets must be released to remove the filter element

Engineering Contradiction:
Improveretention capabilityVSAvoidnumber of fixing components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Multiple fixing functions are merged into a single integrated fixing element that can secure the filter element at multiple points simultaneously, eliminating the need for separate wire brackets at each corner

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If wire brackets require pressing down and lateral displacement for assembly, then the filter element can be fixed, but the installation process becomes cumbersome

Engineering Contradiction:
Improvefixing strengthVSAvoidinstallation simplicity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The fixing element utilizes elastic deformation dynamically during installation, allowing it to be temporarily displaced and then automatically return to its fixed position, simplifying the installation process while maintaining fixing strength

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The fixing element changes its physical state between displaced and fixed positions through elastic deformation, allowing easy installation when displaced and secure fixation when returned to its original state

Inventive Principle:
Principle #35Parameter changes

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 allows for easy insertion and removal of filter elements by pressing them into the holding frame, with the fixing elements automatically securing the filter element, reducing the complexity of assembly and disassembly while ensuring secure fixation.

Implementation Method 1

The fixing element (15) is designed to be elastic and/or spring-loaded and can be removed from its fixing position for inserting the filter element (6) into the holding frame (1) or for removing the filter element (6) from the holding frame (1) against its restoring force

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

at least one fixing device (8) comprises an elastically designed and/or spring-loaded fixing element (15) with a contact area (16)

Methodology Applied
Scientific EffectSpring force: Spring

Data Source

PatentEP2775225B1System, comprising a support frame, a filter element fixed in it, as well as at least two fixing devices
Publication Date: 2017.04.19 TROX GMBH
  • EP2775225B1 patent drawingFigure 1
  • EP2775225B1 patent drawingFigure 2
  • EP2775225B1 patent drawingFigure 3

AI summary

The system has a support frame (1) comprising frame parts (2), and a filter element fixed to the frame. The frame parts are designed with L-shaped cross-section, where an outer contour of the filter element is designed such that the filter element is fixed against the frame over a fixing device (8). The fixing device has an elastically designed fixing element. The fixing element is moved from fixing position in which the filter element is fixed in the frame to a direction of a side bracket (4), where automatic back displacement is provided in the fixing position based on return force.