Wind guide plate moving device and fan
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Solution Overview
Problem
Existing air deflector motion devices in cooling fans suffer from shaking issues due to an unbalanced center of gravity, especially during automatic operation, and have complex structures requiring high precision.
Innovation Solution
The air deflector motion device is designed with a first rotating shaft hinged to the air outlet frame and a driving assembly hinged to the air deflector by a second rotating shaft, controlling the center of gravity between these shafts to prevent sudden shaking, using a motor, crank, and connecting rod for smooth operation and synchronization of multiple air deflectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the air deflector is automatically swung using a motor-driven mechanism, then the air direction can be adjusted automatically, but the air deflector shakes suddenly at certain positions during movement
Solution Approach 1:
The patent applies counterweight principle by adding a weight block to the air deflector assembly to balance the center of gravity. The weight block is positioned to counteract the gravitational torque that causes sudden shaking at specific angular positions, thereby stabilizing the automatic swinging operation and eliminating the reliability issue while maintaining automation.
2Ease of operation
If the air deflector center of gravity is positioned away from the rotation axis to enable automatic swinging, then the air deflector can change direction, but sudden shaking occurs when the center of gravity shifts to the far side
Solution Approach 1:
The patent positions the center of gravity of the air deflector assembly (including the weight block) between the first and second rotating shafts. This strategic positioning ensures that during automatic swinging, the center of gravity does not shift to the far side of the first rotating shaft, thereby preventing sudden shaking while maintaining the ability to adjust air direction effectively.
Solution Approach 2:
The patent dynamically controls the center of gravity position of the air deflector assembly by incorporating a weight block that can be positioned to balance the system. This dynamic balancing allows the air deflector to swing automatically across a controlled range without experiencing sudden shocks, ensuring smooth operation throughout the motion cycle.
3Manufacturing precision
If a complex driving mechanism with multiple components is used to control the air deflector, then precise control can be achieved, but the structure becomes complex and requires high precision manufacturing
Solution Approach 1:
The patent employs a multi-functional driving mechanism where the motor serves multiple purposes: it provides the driving force for automatic swinging, controls the air deflector position, and through the connecting rod mechanism, synchronizes the movement of multiple air deflectors. This multi-functionality reduces the need for separate control systems for each component, thereby maintaining precise control while reducing overall device complexity.
Solution Approach 2:
The patent merges the driving functions into a single integrated mechanism. The motor, connecting rod, and air deflector are combined into one cohesive system where the motor's rotation is directly transmitted through the connecting rod to control the air deflector's swinging motion. This merging eliminates the need for separate actuators and control systems, simplifying the structure while maintaining precise control capability.
Data Source
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AI summary
The present invention discloses an air deflector motion device and a fan. The air deflector motion device includes a air deflector (1) and a air outlet frame (2). The air deflector (1) is hinged to the air outlet frame (2) by a first rotating shaft (3). The air deflector motion device further includes a driving assembly hinged to the air deflector (1) by a second rotating shaft (4). The driving assembly is preset with a driving range, and the driving assembly drives the air deflector (1) to rotate around the first rotating shaft (3) in the driving range, so that the center of gravity of the air deflector (1) is located at the side, close to the second rotating shaft (4), of the first rotating shaft (3), or the center of gravity of the air deflector (1) is located above or below the first rotating shaft (3) in the vertical direction. The fan provided with the air deflector motion device can be prevented from suddenly shaking, thereby ensuring the fluency of operation of the air deflector.