Damper for ventilation system
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Solution Overview
Problem
Ventilation system dampers require complex and numerous parts for blade rotation control, leading to time-consuming mounting and significant play between components, affecting operational efficiency and acoustic properties.
Innovation Solution
A damper design featuring gear wheels fixed to each blade with a link connecting adjacent torque transferring elements, allowing blades to rotate in opposite directions with even force distribution and reduced play, utilizing a minimal number of parts for simplified mounting and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex geared links and gears are used to control blade rotation, then power distribution to adjacent blades rotating in opposite directions is achieved, but the number of parts increases and mounting becomes complex and time-consuming
Solution Approach 1:
The patent combines multiple functions into a single link component that connects torque transferring elements of adjacent blades. This link serves both to transmit torque and to synchronize the rotation of multiple blades, eliminating the need for separate geared links and reducing the overall number of parts while maintaining effective power distribution.
Solution Approach 2:
The link is designed as a universal component that can connect multiple torque transferring elements simultaneously. It performs multiple functions: transmitting torque from one blade to another, synchronizing blade rotation, and providing structural support. This multi-functionality reduces the need for specialized components for each function.
2Ease of operation
If complex geared links and gears are used to control blade rotation, then power distribution to adjacent blades rotating in opposite directions is achieved, but mounting becomes time-consuming
Solution Approach 1:
By merging the functions of torque transmission and blade synchronization into a single link component, the mounting process is simplified. Fewer separate components mean fewer mounting steps and less time required for assembly, while still achieving the desired blade rotation control.
3Ease of operation
If multiple components are used in the torque transfer chain, then blade rotation control is achieved, but play between components increases and affects system operation and acoustic properties
Solution Approach 1:
The patent reduces the number of component interfaces in the torque transfer chain by using a single link to connect multiple torque transferring elements. Fewer interfaces mean fewer sources of play and looser tolerances, thereby improving reliability of system operation and acoustic properties.
Solution Approach 2:
The link acts as an intermediary component that provides a stable and rigid connection between torque transferring elements. It mediates the torque transfer process in a way that minimizes play and ensures smooth, reliable operation of the blade rotation system.
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 solution reduces the complexity and number of parts, facilitates easy mounting, and minimizes play between components, ensuring efficient and even rotation of blades, thereby improving the damper's operational and acoustic performance.
Implementation Method 1
the torque transferring elements associated with adjacent blades interact with each other, by meshing of the gear wheel teeth
Data Source
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AI summary
The present disclosure relates to a damper (1) and a method (100) for a ventilations system. The damper comprises a plurality of rotatable damper blades (4), a rotatable torque transferring element (3) connected to a blade wherein each pair of adjacent blades are rotatable in opposite directions (R1, R2), and a link (2) connecting at least two of the torque transferring elements, The method comprising the steps of applying a drive force causing a first blade to rotate in a first direction, causing, by means of interaction between torque transferring elements a second, adjacent blade, to rotate in an opposite direction, causing a third blade, adjacent the second blade, to rotate in the first blade's direction, and transferring torque from the first to the third blade by means of a link member. This arrangement reduces the effect of play between torque transferring elements and reduces the complexity in mounting and operation of a damper.