Device for directing air flow in the air duct
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Solution Overview
Problem
Existing airflow reversal devices for ventilation systems have complex constructions and limited versatility, particularly in accommodating both radial and axial fans and turbines.
Innovation Solution
A profiled one-plane rotary damper with spherical canopies and a central opening, connected by symmetrical flat ribs, allows for 180-degree rotation within the air duct, enabling efficient airflow direction control for both radial and axial fans and turbines by sealing and unsealing air channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cylindrical damper with coaxial cylinders is used for airflow reversal, then the device can change airflow direction, but the construction becomes extensive and complexity increases
Solution Approach 1:
The damper is divided into two functional parts: a stationary outer cylinder with fixed openings and a rotating inner cylinder with movable openings. This segmentation allows independent optimization of each component and simplifies the overall structure by eliminating the need for complex multi-cylinder arrangements while maintaining airflow reversal capability.
Solution Approach 2:
The simplified damper structure with one stationary and one rotating cylinder can handle both radial and axial fans and turbines, making it a universal solution for different ventilation system configurations. The same basic structure achieves airflow reversal functionality across multiple application types without requiring design modifications.
2Ease of operation
If multiple coaxial cylinders are used in the damper, then airflow windows can be controlled, but the device construction becomes extensive
Solution Approach 1:
The invention extracts and eliminates the unnecessary outer rotating cylinder from the traditional design, retaining only the essential rotating inner cylinder component. This reduction in components simplifies the construction while preserving the core functionality of controlling airflow windows through rotation, making the device easier to manufacture and maintain.
3Ease of manufacture
If the damper structure is simplified, then manufacturing becomes easier, but versatility for different fan and turbine types may be limited
Solution Approach 1:
The simplified damper design achieves universality by using a generic cylindrical structure with adjustable openings that can accommodate different fan and turbine types. The rotating mechanism and opening geometry can be configured to work with both radial and axial flow patterns, ensuring broad compatibility without sacrificing manufacturing simplicity.
Solution Approach 2:
The damper's adaptability is achieved through parameter adjustments in the opening geometry, rotation angle, and cylinder dimensions rather than structural complexity. By varying these parameters, the same simplified structure can optimize performance for different fan and turbine configurations, maintaining versatility while ease of manufacture.
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
Simplifies the damper structure, enhances versatility by supporting both radial and axial airflow systems, and ensures efficient airflow reversal or direction change without mixing air streams during rotation.
Implementation Method 1
The profiled damper rotates 180 degrees to the left and 180 degrees to the right, or rotates in one direction, cyclically stopping every 180 degrees
Implementation Method 2
a sealing diaphragm with edges is formed. This diaphragm has edges that tightly fit to the dividing-sealing shelf
Data Source
AI summary
The device to control air flow direction in the air duct according to the invention, which has an air duct and is provided with a working machine in the form of a fan or turbine, is characterized by a working machine that is located in the profiled damper (3). This is a profiled single plane rotary baffle, in which there is a central hole and two embossings forming two canopies: the suction/inlet canopy (3a) and the compression /outlet canopy (3b), arranged in such a way that they are located on opposite sides of the plane of the baffle, while the canopies (3a), (3b) have the shape of the rotary bodies with a common axis of rotation coinciding with the axis of rotation of the profiled damper (3), and are so interposed that the central hole is in the plane perpendicular to the plane of the profiled damper (3), and perpendicular to the axis of rotation of the profiled damper (3). The profiled damper (3) rotates pendulously at an angle of no more than 180 degrees, and in extreme positions, through contact of the edge (4) to the partition/sealing shelf (2), separates the upper part (la) from the lower part (lb) of the air duct (I). With the angle of rotation of no more than 180 degrees, the position of the canopies (3a, 3b), relative to the air duct (1), changes so that the canopy that was in the upper part of the air duct is moved to its lower part and the canopy that was in the lower part of the air duct (1) is moved to its upper part.