Air Conditioner Filter Rotating Connection for Damage-Free Disassembly

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Solution Overview

Problem

The connection structure between the filter screen and the housing of an air conditioner's indoor unit is prone to damage during disassembly, requiring professional tools and skills, making frequent cleaning and maintenance challenging.

Innovation Solution

A rotating connection structure featuring a fixed member with a rotating shaft groove, mounting groove, and limiting groove, allowing the filter assembly to rotate within a preset angle range, facilitating easy disassembly and assembly without damaging the connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the filter screen is connected to the housing by forcibly clamping an elastic end into a round hole, then the connection is secure, but the connection structure is damaged during disassembly requiring professional tools and skills

Engineering Contradiction:
Improveconnection strengthVSAvoidease of disassembly
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The connection structure transitions from a static forced-clamp design to a dynamic rotating connection. The elastic end is configured to rotate relative to the housing within a preset angle range, allowing the filter screen to be easily detached by rotating it out of engagement, while maintaining secure connection during normal operation. This dynamic mechanism eliminates the need for professional tools and skills for disassembly.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The connection structure is divided into distinct functional components: a fixed member on the housing, a rotating member on the filter screen, and an elastic end that provides both connection and rotation capability. This segmentation allows each component to perform its specific function optimally - the elastic end provides secure connection while the rotating mechanism enables easy disassembly.

Inventive Principle:
Principle #1Segmentation

2Reliability

If the filter screen is frequently detached and cleaned, then air quality is maintained, but the connection structure is damaged requiring professional disassembly tools

Engineering Contradiction:
Improveair quality maintenanceVSAvoiddisassembly complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The rotating connection structure enables the filter screen to be easily detached and reattached by users without requiring professional tools or skills. The simple rotation mechanism allows frequent maintenance operations to be performed as needed, ensuring air quality is maintained while eliminating the complexity of professional disassembly procedures.

Inventive Principle:
Principle #25Self-service

3Stability of the object's composition

If the elastic end is forcibly clamped into the round hole, then the filter screen is securely fixed, but repeated disassembly and assembly causes damage to the connection structure

Engineering Contradiction:
Improvefilter screen fixationVSAvoidconnection durability
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The connection structure incorporates a rotating mechanism that allows the filter screen to be easily detached and reattached without damaging the connection components. The elastic end rotates within a preset angle range during detachment and reattachment, preventing the cumulative damage that would occur with repeated forced clamping and release operations.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The elastic end is designed with inherent elasticity and rotation capability to cushion the stresses of repeated disassembly and assembly operations. This prior cushioning design prevents damage accumulation in the connection structure, maintaining both fixation stability and connection durability over time.

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

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 convenient and repeated disassembly and assembly of the filter assembly without damaging the connection structure, improving maintenance accessibility and reducing the risk of damage.

Implementation Method 1

the elastic end is elastically deformed when rotating from the mounting groove to the rotating shaft groove, and recovers from the elastic deformation and is limited in the limiting groove

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP3892933B1Air conditioner, indoor unit of air conditioner and rotating connection structure thereof
Publication Date: 2024.08.21 GD MIDEA HEATING & VENTILATING EQUIP CO LTD
  • EP3892933B1 patent drawingFigure 1
  • EP3892933B1 patent drawingFigure 2
  • EP3892933B1 patent drawingFigure 3

AI summary

Disclosed are an air conditioner, an indoor unit of the air conditioner and a rotating connection structure thereof. The rotating connection structure includes a fixed member (11) and a rotating member (12) that rotates relative to the fixed member (11) within a preset working angle range. A rotating shaft groove (111), a mounting groove (112) and a limiting groove (113) are provided in the fixed member (11); the rotating member (12) includes a main body (121), a limiting member (122), a rotating shaft (123) and a head (124); the head (124) passes through the mounting groove (112) and makes the rotating shaft (123) slide from the mounting groove (112) into the rotating shaft groove (111); the head (124) is stopped outside the rotating shaft groove (111); and the head (124) and the main body (121) are located at two opposite sides of the fixed member (11).