Laundry Dryer Filter Cartridge With Unified Deep-Bed Filtration
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Solution Overview
Problem
Existing tumble dryer filter designs are complex and costly to maintain due to separate components and short service life, requiring frequent cleaning and additional sealing, which complicates the handling and efficiency of the filter insert.
Innovation Solution
A deep-bed filter block composed of two glued filter layers with different pore densities, forming a unified block with spot bonding and a self-sealing design, eliminating the need for additional seals and simplifying assembly and cleaning, featuring a magnet recess for precise installation and a handle for easy handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate filter components are used to improve filtration effectiveness, then the filter effect is improved, but the device complexity and handling difficulty increase
Solution Approach 1:
The patent combines multiple separate filter components (coarse filter, fine filter, and deep-bed filter) into a single integrated filter insert assembly. This unified structure maintains the multi-stage filtration effectiveness while eliminating the complexity of managing separate components, reducing handling difficulty, and simplifying the overall device structure.
Solution Approach 2:
The filter insert is segmented into distinct functional zones (coarse filtration layer, fine filtration layer, and deep-bed filtration section) within a single unified structure. This segmentation allows each zone to perform its specific filtration function effectively while maintaining overall structural integrity and simplicity.
2Adaptability or versatility
If filter components are separated and held by drawer mechanisms, then individual filter levels can be positioned separately, but cleaning becomes time-consuming and complex
Solution Approach 1:
All filter components are merged into a single removable filter insert that can be taken out as one unit for cleaning. This eliminates the need to handle and clean multiple separate filter levels individually, significantly reducing cleaning time while maintaining the flexibility to access and service the filtration system.
3Reliability
If multiple seals are used to seal separate filter components, then the sealing effectiveness is improved, but the ease of manufacture and assembly deteriorates
Solution Approach 1:
The filter components are merged into a single integrated insert that seals as one unit against the housing. This eliminates the need for multiple separate seals between individual filter components, simplifying manufacturing and assembly while maintaining effective sealing through the unified structure's single seal interface.
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 extends cleaning intervals, simplifies filter handling, and maintains air flow efficiency by using a unified block design that reduces flow loss and stabilizes the filter structure, enhancing overall maintenance efficiency.
Implementation Method 1
The bonding of the filter layers to produce a non-detachable connection of the layers on the surface has spot bonding, with a circumferential bead of adhesive being applied in the edge region of the two bonded filter layers.
Data Source
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Figure 3~4
AI summary
The laundry treatment machine, particularly laundry dryer (1), has a drum supported in housing (2) in rotatable manner, a filling opening lockable with a door (3), a blower and a heating unit for production of processing air stream. A filter cartridge (6) is provided, which has stretched filter block made of two filter layers.