A plenum device and a plenum system
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Solution Overview
Problem
Existing plenum devices are difficult to adjust once installed, requiring precise measurements and cutting, and cannot be extended, leading to impractical installation and adjustment challenges.
Innovation Solution
A plenum device with a moveable fixing bracket and adjustable aperture mechanism, allowing tool-free installation and post-installation adjustments, featuring a mechanical iris and engagement mechanism for precise air flow control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-length plenum elbow bend is used, then manufacturing and installation are simplified, but the device cannot be adjusted or extended after installation
Solution Approach 1:
The plenum device is divided into a fixed body section and a moveable downpipe section that can be independently adjusted. The fixing bracket is segmented to allow relative movement between the body section and the mounting surface, enabling adjustment without disconnecting the entire device.
Solution Approach 2:
The fixing bracket is designed with moveable components that allow the downpipe length and positioning to be dynamically adjusted after installation. The engagement mechanism with releaseable lugs enables the structure to transition from a fixed state during installation to an adjustable state for fine-tuning.
2Manufacturing precision
If precise cutting is required to achieve proper fit, then installation precision is improved, but installation time and complexity increase
Solution Approach 1:
The downpipe is pre-configured with an adjustable length mechanism and the fixing bracket is pre-designed with engagement features. This preliminary preparation eliminates the need for precise cutting during installation, as adjustments can be made afterward through the engagement mechanism.
Solution Approach 2:
The device allows the effective length and positioning parameters to be changed after installation through the moveable fixing bracket. Instead of requiring precise cutting to set the correct length, the system enables parameter adjustment through mechanical movement and engagement of the bracket components.
3Adaptability or versatility
If the downpipe length is fixed, then manufacturing is simplified, but the device cannot be extended or shortened after installation
Solution Approach 1:
The adjustable downpipe section is nested within or alongside the fixed body section, allowing the effective length to be varied by extending or retracting the moveable portion. The fixing bracket encompasses both sections and provides the mechanical means for adjustment while maintaining a compact overall structure.
Data Source
AI summary
A plenum device and a plenum system, the plenum device includes a body section having a first opening at a first end and a second opening at a second end defining a curved air flow channel therebetween, the second opening having an aperture; a fixing bracket moveably coupled to the exterior of the body section and configured to secure the plenum device to a ceiling void space; and an adjustment mechanism arranged at the second opening of the body section and configured to vary the size of the aperture. The first end is configured to be coupled to an air duct and the second end is configured to be coupled to an inlet/outlet port. The fixing bracket is configured to be moveable relative to the body section between a plurality of positions and includes an adjustable engagement mechanism arranged to secure the fixing bracket in one of the positions.