Removable Duct Flange Assembly for Clean Fluid Conditioning Access
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Solution Overview
Problem
Ventilation duct systems face challenges in accessing internal components for inspection, maintenance, and repair due to difficult removal processes, which can result in damage and increased costs, and existing solutions like flanged housings with weld seams are problematic for industries requiring high air quality as they can harbor bacteria and corrode, compromising cleanliness.
Innovation Solution
A removable fluid conditioning assembly with integral radially outwardly directed flanges and clamps allows for easy disconnection and reconnection of fluid conditioning devices from duct sections, eliminating the need for weld seams and ensuring a contaminant-free assembly by using clamps and gaskets for sealing, thereby facilitating access without exposing fluid flow to potential contamination sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices are assembled within a housing and inserted into the duct system with sealant, then fluid-tight sealing is achieved, but removal of the device becomes difficult or impossible without significant effort and potential damage
Solution Approach 1:
The housing is divided into two separable parts: an inner housing that contains the fluid conditioning device and an outer housing that interfaces with the duct system. The sealant is applied only at the interface between these two housing parts, not between the housing and duct, enabling easy removal while maintaining sealing during operation
Solution Approach 2:
The separable housing structure acts as an intermediary between the fluid conditioning device and the duct system. It provides the fluid-tight seal when assembled but allows the device to be removed by simply separating the housing parts, avoiding direct permanent bonding to the duct
2Ease of repair
If flanged housings with weld seams are used to facilitate device removal, then ease of disassembly is improved, but weld seams expose the fluid flow to potential contamination sources and can harbor bacteria
Solution Approach 1:
The weld seam is completely removed from the system by replacing the welded flange connection with a separable housing design that uses mechanical fasteners and sealant. This extracts the contamination source from the fluid flow path while maintaining the ability to disassemble the device for maintenance
Solution Approach 2:
The sealing function is localized to the interface between the inner and outer housing parts using sealant, rather than relying on exposed weld seams. This creates a smooth, cleanable sealing surface that does not harbor bacteria while still allowing easy disassembly
Data Source
AI summary
A fluid conditioning assembly includes a fluid conditioning device defining a passage and having a first end and a second end. A control element is supported within the passage. At least the first end includes an integral radially outwardly directed flange. The integral radially outwardly directed flange is configured to be operatively and releasably coupled to a first radially outwardly directed flange of a first duct section. A technician may release the fluid conditioning device from the first duct section to remove the fluid conditioning device from the ventilation duct system for accessing the control element of the fluid conditioning device.