Modular Ventilation Filter With Adjustable Casing
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Solution Overview
Problem
Existing ventilation air vent filters face manufacturing constraints due to size limitations, requiring custom-made casings that are impractical and costly, lacking modularity and versatility in accommodating different sizes of filtering fabric rolls.
Innovation Solution
A modular filter design featuring a casing with a shaped wall, end supports, and stay rods that allows for easy adjustment and replacement of filtering fabric rolls, enabling standardized or custom-sized production with reduced material usage and simplified assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If thermoforming is used to manufacture casings, then casings can be produced with specific sizes, but the front of the roll filtering fabric cannot exceed 600 millimetres due to machine size restrictions
Solution Approach 1:
The casing is divided into multiple standardized modular sections that can be assembled in different combinations. Each module has standardized dimensions compatible with thermoforming machine capabilities, but multiple modules can be joined to create casings that accommodate larger roll filtering fabrics exceeding 600mm, thus resolving the contradiction between manufacturing precision and adaptability.
Solution Approach 2:
The standardized modular casing sections are designed to be universally applicable across different filter sizes. The same basic module can serve multiple functions by being repeated in different quantities and configurations, allowing a single manufacturing process to produce casings for various roll filtering fabric sizes without requiring custom tooling for each size.
2Manufacturing precision
If custom-made casings are produced for each size, then exact fit is achieved, but manufacturing costs increase and production becomes impractical
Solution Approach 1:
By segmenting the casing into standardized modules, the system achieves exact fit for various sizes without requiring custom-made casings. The modular approach allows precise assembly using pre-fabricated components, maintaining manufacturing precision while enabling economical mass production of standard modules that can be combined in different configurations.
Solution Approach 2:
The invention changes the parameter of casing production from custom-made continuous forms to standardized discrete modules. This parameter change allows the same manufacturing processes to be reused across different size configurations, reducing production costs while maintaining exact fit through precise modular assembly rather than custom tooling.
3Length of stationary object
If the filtering fabric roll diameter is limited to 60 millimetres, then the casing size is constrained, but the length of the filtering fabric significantly decreases with higher thickness
Solution Approach 1:
The casing is segmented into modular sections that can be assembled to accommodate larger roll filtering fabric diameters exceeding 60mm. This segmentation allows the casing to scale in size without requiring custom manufacturing, enabling the use of thicker filtering fabrics with longer lengths while maintaining standardized production processes for the casing modules.
Solution Approach 2:
The invention resolves the dimensional constraint by changing from a fixed single-dimension casing design to a modular multi-dimension assembly system. Standardized modules can be combined in different quantities along the length dimension, allowing the overall casing to accommodate larger diameter rolls and longer filtering fabric lengths while each individual module remains within standard manufacturing capabilities.
Data Source
AI summary
A modular filter for ventilation air vents comprises a filtering fabric roll (1) housed within a casing provided with anchoring means (13) engaging the surface (S) of the container which has the air intake port (B) to be filtered; the casing has a slot (9) for extracting the filtering fabric (T), and has a casing (4) comprised of a shaped wall (5) enclosed at the ends by covers (10, 40, 44, 51) or end supports (7, 47) of this wall having a shape corresponding to the shaped wall (5) and maintaining a longitudinal slot (9) at the front edges of the shaped wall to allow the passage for the extraction of the front (F) of the filtering fabric (T) unwound from the filtering fabric roll (1); at least one screw stay rod (8, 54) is placed between two covers (51) or end supports (7, 47) of the shaped wall and is tightened to define the proper distance between the two end supports or covers (51), by tightening the end supports (7, 47) or covers (51) to the shaped wall (5), one at each end, to close the access to the casing, and containing the filtering fabric roll (1) floating and free to rotate when the filtering fabric is dragged from the outside of the modular filter.Various methods for producing the shaped wall (5) and finalizing the casing (4) of the modular filter are indicated.