Box-Type Air Filter Head Frame for Simple, Leak-Free Installation
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Solution Overview
Problem
Conventional HEPA filters are difficult to install in filter holders without additional precautions, and existing cassette filters with head frames are costly and complex to manufacture.
Innovation Solution
A filter arrangement using a head frame composed of adjustable straight profiles and angled corner connectors, which can be easily assembled and bonded with casting compound to securely hold a box-shaped air filter, allowing for simple and cost-effective installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional HEPA filters are installed in filter holders, then filtration function is achieved, but additional locking precautions are required making installation complex
Solution Approach 1:
The head frame is divided into modular components: four straight profile sections and four corner connectors. This segmentation allows the frame to be easily assembled and disassembled without complex tools, enabling secure installation while reducing installation complexity. The modular design lets users construct the frame step-by-step around the filter element.
Solution Approach 2:
The head frame components are designed with pre-formed connection features (receiving grooves, locking mechanisms) that enable preliminary assembly preparation. The frame can be partially assembled or prepared beforehand, and the filter element can be positioned within the frame structure before final securing, simplifying the overall installation process while ensuring reliability.
2Strength
If cassette filters with head frames are manufactured using traditional methods, then structural integrity is achieved, but manufacturing cost and complexity increase
Solution Approach 1:
The head frame is manufactured as separate modular components (straight profiles and corner connectors) rather than as a single complex piece. This segmentation allows each component to be produced using simpler, more cost-effective processes and enables parallel manufacturing of multiple components, reducing overall manufacturing cost and complexity while maintaining structural integrity through proper connection design.
Solution Approach 2:
The straight profiles and corner connectors are designed as universal components that can be used across different filter sizes and configurations. The corner connectors serve multiple functions: structural connection points, mounting interfaces, and potential sealing surfaces. This multi-functionality reduces the total number of unique parts needed, simplifying manufacturing and reducing costs.
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 easy and cost-effective installation of HEPA filters in filter holders with a secure, leak-free connection, enhancing application possibilities and reliability.
Implementation Method 1
The corner connectors can be provided with openings at the level of the receiving channel and facing it. The receiving groove is filled with sealing compound, which forms a material-to-material bond between the head frame and the air filter.
Implementation Method 2
The air filter has at least one filter element enclosed by a box-shaped frame. Particulate air filters are known in a wide variety of designs, for example, from DE 19601978 A1 and DE 19545064 A1, which are used in applications with high clean air quality requirements.
Data Source
Figure 1a~1b
Figure 2
Figure 3a~3b
AI summary
The invention relates to a filter arrangement (100) comprising an air filter (10) and a head frame (20) accommodating the air filter (10), wherein the air filter, a box-shaped box-type filter, (10) has at least one filter element (12) enclosed by a frame (11). According to the invention, the head frame (20) is composed of straight profiles (21) and angled corner connectors (22). Such a filter arrangement (100) advantageously enables additional possible uses of air filters (10) and their installation in filter receptacles (40) that require a head frame (10).