Cylindrical Air Diffuser With Inclined Fins for Draft Control
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Solution Overview
Problem
Existing air diffusion systems in animal breeding rooms suffer from non-homogeneous air circulation, clogged thermal insulation perforations, directional air flows, and actuator failures, leading to stagnation in consumption indices, growth rates, and increased animal health issues due to drafts and toxic gas accumulation.
Innovation Solution
A cylindrical air diffusion device with a shutter member and inclined fins that allows air to be introduced at constant speed and variable angles, diffusing air in all directions passively through a pressure difference or counterweight, preventing direct air currents on animals and ensuring each animal receives equal fresh air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air is extracted by a fan creating negative pressure, then air renewal is achieved, but drafts occur and air circulation becomes non-homogeneous
Solution Approach 1:
The air diffusion device segments the air flow into multiple directional streams through vertically arranged fins, distributing air uniformly across different zones to eliminate non-homogeneous circulation patterns
Solution Approach 2:
The shutter member dynamically adjusts the diffusion window opening area in response to pressure differential changes, automatically modulating air flow to maintain homogeneous circulation while preventing drafts
2Extent of automation
If air is blown from outside through the ceiling, then air inlet becomes active, but consumption indices stagnate and animal growth rates decrease
Solution Approach 1:
The system incorporates feedback through pressure differential sensing that automatically controls shutter member position, optimizing air flow rates to improve animal growth rates while maintaining active air inlet functionality
Solution Approach 2:
The device changes the air flow parameters by varying the diffusion window opening area, controlling air speed and distribution patterns to enhance animal growth performance
3Ease of operation
If hatches are used for air diffusion, then air can be introduced, but directional air flows create wheel phenomena with cold air descending and warm air rising
Solution Approach 1:
The fins are arranged asymmetrically at specific angles (30-60 degrees from vertical) to disrupt the symmetric wheel phenomenon, creating stable multi-directional air flow patterns that prevent cold air descent and warm air rise cycles
Solution Approach 2:
The device transitions from two-dimensional hatch openings to three-dimensional fin structures that distribute air in multiple spatial dimensions, eliminating the planar wheel phenomenon and creating stable volumetric air circulation
4Ease of manufacture
If perforations in thermal insulation systems are used, then air can pass through, but perforations clog due to dust accumulation
Solution Approach 1:
The device extracts the air diffusion function from the thermal insulation perforations, concentrating air flow control in a dedicated diffuser structure that is less susceptible to dust clogging while maintaining insulation integrity
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
The device provides homogeneous air distribution, reduces drafts, and maintains consistent air speed, improving animal health and growth conditions by optimizing air mixing and circulation, thus overcoming the limitations of existing systems.
Implementation Method 1
the passage from the rest position to the diffusion position takes place at against the force of gravity of a counterweight, when the pressure prevailing at the level of the lower face of the sealing disc is lower than that prevailing at the level of the upper face of said disc
Implementation Method 2
the passage from the rest position to the diffusion position takes place at against the force of gravity of a counterweight
Implementation Method 3
the successive rows of fins from bottom to top being more and more inclined with respect to the vertical
Implementation Method 4
allow the circulation of air from the upper part of the body through said diffusion window or windows
Data Source
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AI summary
The invention relates to a device for diffusing air (1) inside a room, notably a breeding room. This device is noteworthy in that it comprises: - a cylindrical body (2), the upper part of which constitutes an air inlet and the lower part (22) of which comprises at least one air diffusion window (221) provided with fins (229a, 229b, 229c) with different inclinations, - and a shut-off member (3) comprising a cylindrical peripheral wall (31) and a central shut-off disc (32), in that said shut-off member (3) is able to move in the lower part of said body between a rest position, in which its peripheral wall (31) is located next to said diffusion window (221) so as to prevent the circulation of air, and a diffusion position, in which its peripheral wall (31) is no longer located next to said window so as to allow the circulation of air, and in that the movement between the rest position and the diffusion position takes place counter to the weight force of a counterweight, in the event of low pressure at the lower face of the shut-off disc (32).