Rotary Fan Built-in Swing Mechanism with Ball-and-Socket Support
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Solution Overview
Problem
Current rotary fans, particularly oscillating and cover-rotating types, face limitations in expanding air outlet area vertically, suffer from reduced applicability due to unstable support structures, and pose safety risks due to sharp edges, which impede effective air flow and ease of cleaning.
Innovation Solution
A rotary fan with a built-in swing mechanism utilizing a drive motor for axially oblique circulating oscillation, combined with a ball-and-socket support frame and spherical abut seat, allows for stable and efficient wind direction change along a circular path, increasing the wind outlet surface area and improving usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an oscillating rotary fan is used to change wind direction, then the wind direction can be adjusted, but the air outlet area cannot be expanded vertically and the outer casing shifts by large amplitude
Solution Approach 1:
The patent applies the dynamics principle by making the entire fan assembly (including outer casing) movable rather than fixed. The fan body is mounted on a movable platform with wheels, allowing it to dynamically reposition itself to change the effective air outlet direction and area, rather than relying on internal vane oscillation alone.
Solution Approach 2:
The patent transitions from two-dimensional wind direction adjustment (horizontal oscillation only) to three-dimensional movement by adding vertical lifting capability and lateral shifting through the movable platform, enabling the air outlet area to be expanded in multiple spatial dimensions.
2Stability of the object's composition
If a stable support structure is used for large-sized industrial rotary fans, then structural stability is improved, but the oscillating functions are compromised and applicability is reduced
Solution Approach 1:
The patent replaces the traditional fixed stable support with a dynamic movable platform system that provides stability during operation while enabling oscillating and positioning functions. The platform includes stabilization feet and wheel mechanisms that maintain stability when needed but allow movement when oscillation is required.
Solution Approach 2:
The support structure's parameters (position, orientation, stability) are made changeable through the movable platform design, allowing the system to transition between stable operational states and oscillating states as needed, rather than being fixed in a single configuration.
3Adaptability or versatility
If the outer casing shifts by large amplitude during oscillation, then the oscillating point is focused, but the area of rotary fan increases beyond actual application needs
Solution Approach 1:
The patent uses the movable platform to dynamically control the amplitude and range of oscillation, allowing the fan to focus on specific target areas rather than covering large areas indiscriminately. The positioning system enables precise control over where the focused oscillating airflow is directed.
4Ease of operation
If oblique plates are used in the diversion box, then air flow diversion is achieved, but air feed performance is impaired and cleaning becomes difficult
Solution Approach 1:
The patent extracts and removes the problematic oblique plates from the diversion box design, replacing them with alternative structures that achieve air flow diversion without the negative effects of impeding airflow or creating difficult-to-clean surfaces.
Data Source
AI summary
The present invention provides an improved built-in swing mechanism of a rotary fan. The mechanism includes a ball-and-socket support frame, arranged onto front wall of the main casing corresponding to the axle center of a drive motor and provided with a spherical supporting surface and a through-hole. A spherical abut seat is fastened at a front end of the drive motor is provided with a spherical abut surface that couples with the spherical supporting surface. A punch hole is placed at the center of spherical abut surface for the penetration of the axle center. A crank linkage element is assembled between rear end of the drive motor and the rear wall of the main casing. The first end of the crank linkage element can be driven to enable the oscillation of the second end. The second end is assembled at a rotary pivot corresponding to the main casing.