Loop Filter Support Frame for Smooth Air Conditioner Cleaning
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Solution Overview
Problem
Existing air conditioning indoor units with filter cleaning devices face issues due to the mechanical durability of metal filters and interference from borders or ribs on flexible resin filters, which affect the smooth operation and maintenance of the filter cleaning process.
Innovation Solution
The air conditioning indoor unit employs a filter supported by a frame without borders or ribs, using a support frame to maintain the filter's shape and include features like a filter pressing member, handgrip, and directional turnaround portions to ensure smooth revolving and easy maintenance, along with a roller with brush material for enhanced friction and a partition member to prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal filter is used in the filter cleaning device, then mechanical durability with respect to repetitive revolving motion is improved, but flexibility is reduced and the filter becomes less adaptable
Solution Approach 1:
The filter is divided into multiple independent reinforcement portions (first, second, third reinforcement portions) that are distributed at different locations. This segmentation allows each portion to independently provide structural support without requiring the entire filter to be rigid, thus maintaining flexibility while improving mechanical durability.
Solution Approach 2:
Reinforcement portions are selectively placed at specific locations (both end portions and intermediate portions) where structural support is most needed during repetitive revolving motion. This local reinforcement approach provides mechanical durability exactly where required while leaving other areas flexible and adaptable.
2Stability of the object's composition
If borders or ribs are disposed on a flexible resin filter to maintain its shape, then shape stability is improved, but interference with other members increases and the revolving action is hindered
Solution Approach 1:
The invention uses a flexible resin filter without traditional rigid borders or ribs. Instead, reinforcement portions are integrated into the filter structure in a way that maintains flexibility while providing shape stability, allowing the filter to revolve smoothly without interfering with other members.
Solution Approach 2:
The reinforcement is segmented into multiple discrete portions rather than continuous borders or ribs. This segmentation reduces the overall interference with surrounding members while maintaining shape stability through distributed reinforcement points.
3Ease of operation
If a support frame is introduced to maintain filter shape without borders or ribs, then interference is reduced and revolving action is improved, but device complexity increases
Solution Approach 1:
The support frame and filter reinforcement functions are merged into a single integrated structure. The support frame itself provides the necessary shape maintenance, eliminating the need for separate borders or ribs on the filter, thus reducing overall device complexity while improving revolving action.
4Strength
If reinforcement portions are added to the filter, then mechanical durability is improved, but the filter structure becomes more complex
Solution Approach 1:
Reinforcement portions are strategically placed only at specific locations (end portions and intermediate portions) where mechanical stress is highest during repetitive revolving. This localized approach improves mechanical durability without adding unnecessary complexity to the entire filter structure.
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
This configuration allows for smooth filter operation and maintenance, reduces mechanical stress, and prevents interference between filter components, enhancing the durability and effectiveness of the filter cleaning process.
Implementation Method 1
The roller has a brush material on its surface and rotates in a state where the surface is in contact with the filter... the brush material eats into the mesh of the filter, raises the frictional force, and suppresses slippage
Data Source
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AI summary
To provide an air conditioning indoor unit equipped with a filter cleaning device that can smoothly actuate a filter at the time of filter cleaning without borders or ribs for reinforcement being disposed on a flexible filter. An air Conditioning indoor unit (2) has a body (10) inside of which is disposed a filter cleaning device (70) that actuates a filter (21) placed on an upwind side of an indoor heat exchanger (12) and removes dirt and dust adhered to the filter (21). The filter (21) is formed in a loop shape and is supported such that it may freely revolve on a support frame (40) that forms a predetermined revolving orbit. The support frame (40) is held in, such that it may be freely attached to and detached from, the body (10). The predetermined shape of the filter (21) is maintained by the support frame (40) even without borders and ribs, so interference between the filter (21) and another member is suppressed and the revolving action of the filter (21) is smooth.