Device for adjusting an air volume flow
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Solution Overview
Problem
Existing air distribution valves in buildings face challenges such as non-uniform air distribution, visual impairment, increased noise generation, and complex adjustment mechanisms, particularly in supply and exhaust air valves.
Innovation Solution
A device with a throttle mechanism featuring first and second blocking elements that can be adjusted relative to each other, allowing for a continuous or stepped expansion of the cross-sectional flow area in any radial direction, optimizing air flow distribution and minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional throttles with vane-shaped blocking elements are used, then the cross section can be adjusted, but the air distribution becomes non-uniform and noise increases
Solution Approach 1:
The throttle is divided into multiple independent blocking elements (first blocking elements and second blocking elements) that can be adjusted relative to each other. This segmentation allows the air flow to be distributed more uniformly across multiple channels rather than creating concentrated jets, thereby reducing noise and improving air distribution uniformity while maintaining adjustability.
Solution Approach 2:
The blocking elements are designed with specific geometries (first blocking elements with first geometry and second blocking elements with second geometry) that create localized flow characteristics. This local quality optimization ensures that each blocking element contributes to uniform air distribution in its specific region, preventing non-uniform discharge patterns and reducing noise generation.
2Reliability
If supply air valves and exhaust air valves have different shapes to optimize their respective functions, then performance is improved, but the visual appearance of the room is impaired
Solution Approach 1:
The valve design incorporates a universal housing structure that can accommodate both supply air and exhaust air functions. The internal throttle mechanism with adjustable blocking elements can be configured for different flow directions and requirements, while the external housing maintains a consistent appearance. This allows the same valve model to serve multiple functions (supply and exhaust) without compromising visual uniformity in the room.
3Productivity
If the throttle blocking elements are adjusted to change cross-sectional area, then air volume flow is controlled, but components protrude into the room and impair visual appearance
Solution Approach 1:
The blocking elements are nested within the valve housing in such a way that their adjustment for air volume control does not cause external protrusion. The first and second blocking elements are arranged concentrically or in a nested configuration that allows them to move independently for flow control while remaining contained within the housing boundaries, thus maintaining a consistent visual appearance regardless of throttle setting.
Data Source
AI summary
A device for adjusting an air volume flow, in particular in an air distribution network, has a central air channel which can be flowed through. The device has a throttle (6) which is arranged in the central air channel and which has at least a first throttle portion (60) having first blocking elements (601) and a second throttle portion (61) having second blocking elements (611). The position of the second blocking elements (611) can be changed relative to the first blocking elements (601) in order to change a size of a cross section of the air channel which can be flowed through. The first blocking elements (601) and the second blocking elements (611) are configured in such a manner that in approximately all positions between the first end position and the second end position in approximately any radial direction they form a portion of the cross section which can be flowed through. The cross section which can be flowed through is expanded in at least some of the positions between the first and second end positions in the direction towards the longitudinal centre axis (L). The device according to the invention for adjusting a volume flow optimises the outflow behaviour.