Filter supporting assembly and air conditioning system

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Solution Overview

Problem

The existing methods for replacing filter screens in air conditioning systems are cumbersome and pose a safety hazard due to the risk of the base plate and filter screen falling during bolt removal.

Innovation Solution

A filter screen supporting assembly with a pivotable support plate and additional supporting pieces that retain support for the filter screen during bolt removal, allowing the plate to pivot to a first angle position and then to a second angle position for easy screen replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the base plate is secured by several bolts, then the filter screen can be firmly supported, but the disassembly process becomes cumbersome and safety hazards increase

Engineering Contradiction:
Improvesupport strengthVSAvoiddisassembly ease
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The base plate connection is segmented into multiple independent quick-release latches distributed along the base plate. Each latch can be independently operated to release the filter screen, replacing the traditional multi-bolt securing method. This segmentation allows the support structure to maintain strength through multiple connection points while enabling easy disassembly by operating individual latches rather than multiple bolts.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connection mechanism transitions from a static bolted joint to a dynamic quick-release latch system. The latches incorporate movable components that can be rapidly engaged and disengaged, providing firm support when closed but enabling quick release when activated. This dynamic mechanism resolves the contradiction by allowing the same connection to provide both strong support and easy disassembly depending on its state.

Inventive Principle:
Principle #15Dynamics

2Stability of the object's composition

If multiple bolts are used to secure the base plate, then the filter screen is firmly held, but the risk of base plate and filter screen falling increases during bolt removal

Engineering Contradiction:
Improvebase plate stabilityVSAvoidsafety reliability
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The quick-release latch mechanism is pre-configured with support features that maintain base plate stability throughout the disassembly process. As each latch is released, other latches or support structures remain engaged to prevent the base plate and filter screen from falling. This preliminary arrangement of support elements ensures continuous stability during the sequential release process, eliminating the safety hazard of sudden collapse.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The latch mechanism incorporates gradual release features that control the disengagement sequence to prevent sudden movement. The design includes cushioning elements or controlled release mechanisms that dissipate energy and prevent abrupt dropping of the base plate and filter screen during bolt removal, thereby maintaining safety reliability while enabling easy disassembly.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Ease of operation

If the support plate is fully detached for filter screen replacement, then the filter screen can be easily removed, but the support plate and filter screen may fall down causing safety hazards

Engineering Contradiction:
Improvefilter screen replacement easeVSAvoidsafety reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The latch mechanism is pre-designed with sequential release capability, where latches can be opened one at a time rather than all at once. This preliminary arrangement allows the operator to maintain support from remaining engaged latches while accessing the filter screen, enabling easy replacement without the safety hazard of complete detachment and potential falling.

Inventive Principle:
Principle #10Preliminary action

4Strength

If traditional bolted connections are used, then the base plate is securely fixed, but the disassembly process is time-consuming

Engineering Contradiction:
Improveconnection strengthVSAvoiddisassembly time
Core Design Contradiction:
StrengthVSLoss of time

Solution Approach 1:

The static bolted connection is replaced with a dynamic quick-release latch system that can rapidly transition between locked and unlocked states. The latches incorporate mechanical advantage features or spring-loaded mechanisms that provide strong holding force when engaged but can be quickly released with minimal effort, dramatically reducing disassembly time while maintaining connection strength during operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The latch mechanism incorporates self-locking or self-holding features that maintain secure connection without requiring continuous operational input. The latches automatically engage and lock into position, providing secure fixation that maintains connection strength while requiring only simple activation for release, thereby reducing both disassembly time and operational complexity.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP4279825B1Filter supporting assembly and air conditioning system
Publication Date: 2025.10.22 CARRIER CORP
  • EP4279825B1 patent drawingFigure 1~2
  • EP4279825B1 patent drawingFigure 3~4
  • EP4279825B1 patent drawingFigure 5~6

AI summary

The present application provides a filter screen supporting assembly and an air conditioning system. The filter screen supporting assembly comprises: a substrate and a support plate, wherein the first side of the support plate is pivotally connected to the substrate, and the second side of the support plate is detachably connected to the substrate, so that the support plate fills at least a part of the slot of the substrate to support the filter screen; wherein, the substrate and/or the support plate are provided with additional supporting piece, such that after a connection between the second side of the support plate and the substrate is removed when the filter screen is replaced, the support plate is supported by the additional supporting piece so that the support plate retains its support for the filter screen, and after the support from the additional supporting piece is removed, the support plate pivots to allow the filter screen to pass through the slot. The filter screen supporting assembly according to the present invention makes it easy for filter screen replacement.