Diffuser of an HVAC system
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Solution Overview
Problem
Traditional HVAC diffusers are inefficient in air distribution, cumbersome to assemble, and expensive due to excessive parts, leading to high installation costs and potential air leakage.
Innovation Solution
A screw-less diffuser design featuring a plenum box with a C-shaped and L-shaped bracket assembly, a blade assembly with a blade holding rod and adjustable blades, and a T-bar assembly made of sheet metal for secure mounting without welding, reducing parts and manufacturing costs while improving air distribution and leakage reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional diffusers are used, then air distribution function is provided, but air distribution efficiency is poor and air leakage occurs
Solution Approach 1:
The diffuser is divided into modular components: a plenum box module formed from C-shaped and L-shaped brackets, and a blade assembly module with adjustable blades. This segmentation allows for improved air distribution through the blade assembly while maintaining manufacturing simplicity through standardized bracket components.
Solution Approach 2:
The C-shaped bracket and L-shaped bracket are merged to form an integrated plenum box structure that eliminates traditional separate components. This merging reduces part count and assembly complexity while maintaining the air distribution function through the integrated design.
2Ease of operation
If traditional diffusers with multiple parts are used, then assembly and installation processes are completed, but they are cumbersome and expensive
Solution Approach 1:
Multiple traditional diffuser components are merged into two main modules: the plenum box formed by combining C-shaped and L-shaped brackets, and the blade assembly. This merging reduces the number of parts from traditional multi-component designs to just these two assembled modules, simplifying both assembly and installation processes.
Solution Approach 2:
The C-shaped and L-shaped brackets serve multiple functions: they form the plenum box structure, provide mounting surfaces, and create the air distribution pathway. This multi-functionality reduces the need for separate dedicated components, thereby reducing overall device complexity.
3Reliability
If traditional diffusers with excessive parts are used, then structural requirements are met, but manufacturing costs are high
Solution Approach 1:
The plenum box is formed by merging C-shaped and L-shaped brackets into a single integrated structure, eliminating the need for multiple separate components and fasteners. This reduces manufacturing cost through fewer parts while maintaining structural integrity through the interlocking bracket design.
Solution Approach 2:
The diffuser design uses standardized bracket components (C-shaped and L-shaped) that can be mass-produced using copy processes. This standardization reduces manufacturing cost while the precise geometric copying ensures structural integrity is maintained.
Data Source
AI summary
A plenum slot diffuser includes a plenum box having five walls formed by joining edges of a C-shaped bracket having first, second, and third walls of the five walls with additional edges of an L-shaped bracket having fourth and fifth walls of the fives walls. An air input opening of the plenum box is disposed in one of the five walls and is configured to be coupled to a duct, and an open end of the plenum box defines an air output opening. The plenum slot diffuser includes at least one blade and a blade holding rod comprising a neck, wherein the neck faces away from the air output opening of the plenum box.