Filter assembly, ventilation assembly and air-conditioning apparatus
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Solution Overview
Problem
Air quality devices such as air purifiers and air conditioners with fresh air functions face challenges in reliable filter replacement and sealing, leading to air leakage and condensation issues due to poor detachment and reassembly processes, which affect user experience and device performance.
Innovation Solution
A filter assembly with a sealing part made of elastic material, integrated with a mounting portion for interference fit with the device's mounting port, enhancing sealing and facilitating easy detachment and reassembly, combined with guiding structures for smooth assembly and preventing air leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a filter assembly is designed to be detachable for user replacement, then ease of operation is improved, but sealing reliability deteriorates due to assembly and disassembly processes
Solution Approach 1:
The mounting portion is designed with dynamic characteristics that change during assembly. When the filter assembly is inserted into the mounting port, the mounting portion deforms elastically to create an interference fit, transforming from a loose state to a tightly sealed state. This dynamic transformation ensures both easy installation and reliable sealing.
Solution Approach 2:
The mounting portion utilizes parameter changes through elastic deformation. The material properties and dimensional parameters of the mounting portion are designed to change during the assembly process, transitioning from a larger dimension that facilitates insertion to a compressed dimension that creates sealing pressure against the mounting port.
2Strength
If the mounting portion is made entirely of rigid material for structural strength, then strength is improved, but ease of operation deteriorates due to difficulty in detachment and reassembly
Solution Approach 1:
The mounting portion is designed with local quality differentiation, where different regions have different material properties. The mounting portion itself is made of elastic material for flexibility during assembly, while the supporting portion that holds the filter screen is made of rigid material for structural strength. This localized differentiation allows the mounting portion to be easily detached and reattached while maintaining overall structural integrity.
Solution Approach 2:
The filter assembly utilizes composite materials with distinct properties for different functional regions. The mounting portion uses elastic material to enable easy assembly and disassembly, while the supporting portion uses rigid material to provide structural support. This composite approach combines the advantages of both material types in their respective optimal locations.
3Ease of operation
If a simple mounting structure is used for easy assembly, then ease of operation is improved, but sealing performance deteriorates due to gaps between components
Solution Approach 1:
The mounting portion is designed with dynamic characteristics that change during assembly. When the filter assembly is inserted into the mounting port, the mounting portion deforms elastically to create an interference fit, transforming from a loose state to a tightly sealed state. This dynamic transformation ensures both easy installation and reliable sealing.
Solution Approach 2:
The mounting portion utilizes parameter changes through elastic deformation. The material properties and dimensional parameters of the mounting portion are designed to change during the assembly process, transitioning from a larger dimension that facilitates insertion to a compressed dimension that creates sealing pressure against the mounting port.
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 significantly reduces condensation and improves user experience by ensuring a tight seal between the filter assembly and the ventilation assembly, even under large temperature differences, enhancing the overall performance and reliability of air-conditioning apparatuses.
Implementation Method 1
The mounting portion includes a sealing part having a shape approximately the same as a shape of a gap between the mounting portion and the mounting port and has an interference fit with the gap, to seal the gap between the mounting portion and the mounting port
Data Source
Figure 1~2
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AI summary
A filter assembly (100), a ventilation assembly (11) and an air-conditioning apparatus are provided. The filter assembly includes: a filter screen (120) configured to filter air; a supporting portion (1102) configured to support the filter screen arranged to the supporting portion; and a mounting portion (1101) configured to mount the filter assembly to or adjacent to a mounting port of an apparatus to be provided with the filter assembly, and a shape and a size of the mounting portion matching with those of the mounting port to cover the mounting port. The mounting portion includes a sealing part (300) having a shape approximately the same with a shape of a gap between the mounting portion and the mounting port and has an interference fit with the gap, to seal the gap between the mounting portion and the mounting port.