Concealed Oscillating Fan Mechanism Using Curved Link Gear
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Solution Overview
Problem
Conventional fans lack an effective oscillating mechanism to direct airflow in multiple directions, leading to reduced cooling efficiency, safety concerns due to manual orientation, and limited applicability in industrial settings where vertical airflow is required.
Innovation Solution
A fan design with a concealed oscillating mechanism using two driving motors and a curved link gear system that allows the blades to rotate and oscillate, enabling directional control of airflow without manual adjustment and reducing noise and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an oscillating mechanism is added to direct airflow to different directions, then airflow directionality is improved, but device complexity increases
Solution Approach 1:
The patent combines the oscillating mechanism and air guiding mechanism into a single integrated assembly. The curved link gear serves dual functions as both the oscillating mechanism and the air guiding mechanism, merging two separate mechanisms into one unified structure that reduces overall complexity while maintaining airflow directionality control
Solution Approach 2:
The curved link gear performs multiple functions simultaneously: it acts as the oscillating mechanism to rotate the blade assembly, serves as the air guiding mechanism to direct airflow, and provides structural support. This multi-functionality eliminates the need for separate components, resolving the contradiction between improved adaptability and increased device complexity
2Adaptability or versatility
If tilted slats are densely arranged to direct airflow, then airflow direction control is improved, but dust accumulation increases and cooling efficiency decreases
Solution Approach 1:
The patent uses a curved link gear with a smooth arc-shaped surface instead of straight, densely packed slats. The curved surface naturally guides airflow in multiple directions while maintaining large surface gaps that prevent dust accumulation, eliminating the harmful effect of dust buildup while preserving airflow direction control
3Device complexity
If manual orientation is used for industrial fans, then device complexity is reduced, but safety risk increases due to operator exposure to moving blades
Solution Approach 1:
The patent implements an automated oscillating mechanism that self-regulates airflow direction without requiring manual intervention. The curved link gear automatically rotates the blade assembly to direct airflow toward the desired area, eliminating the need for operators to manually position the fan and thereby removing the safety hazard of hand-blade contact while maintaining simple overall device complexity
4Adaptability or versatility
If a rotary mechanism with gear set is used for oscillation, then airflow direction control is improved, but mechanical wear increases due to unbalanced weight
Solution Approach 1:
The patent employs a curved link gear with a symmetric arc-shaped design that naturally balances the rotating mass. This curved geometry distributes weight evenly throughout the rotation, eliminating unbalanced forces and preventing mechanical wear while maintaining effective airflow direction control through oscillation
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 fan achieves stable operation with improved airflow directionality and efficiency, reducing the risk of injury and enhancing usability in industrial environments.
Implementation Method 1
a first driving motor located inside the main housing... The first driving motor has a first rotating shaft
Implementation Method 2
a second driving motor located behind and connected to the first driving motor... The second driving motor has a second rotating shaft
Implementation Method 3
a curved link gear connected to and between the main housing and the second driving motor... allowing the first driving motor to oscillate about the connecting rod
Data Source
AI summary
A fan with concealed oscillating mechanism includes a main housing, a first driving motor, a second driving motor and a curved link gear all located inside the main housing, and a set of blades located outside the main housing and connected to a rotating shaft of the first driving motor. The first driving motor has a connecting rod rotatably received in a receiving tube provided in the main housing. The second driving motor is located behind and connected to the first driving motor, and has a rotating shaft being perpendicular to that of the first driving motor. The curved link gear is connected at an end to the second rotating shaft and at another end to the main housing, such that when the second driving motor operates, the first driving motor is brought to oscillate while the set of blades stably rotates to thereby change the direction of produced airflow.