Silent High-Speed Fan with Adjustable Rectification Blades
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Solution Overview
Problem
Conventional portable fans have poor air blowing and cooling effects due to low wind strength, and they are noisy due to turbulent airflow, which affects customer experience and product popularity.
Innovation Solution
A silent high-speed fan design that includes a boosting mechanism and a rectification mechanism to eliminate turbulence, achieving high-speed airflow with reduced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a traditional booster fan structure is applied to increase wind speed, then the cooling effect is improved, but the fan generates noisy turbulent airflow
Solution Approach 1:
The fan blade is divided into multiple independent adjustment sections (first blade section, second blade section, third blade section) that can be independently adjusted to optimize airflow patterns. This segmentation allows each section to be tuned for minimal turbulence while maintaining high wind speed, resolving the contradiction between speed and noise.
Solution Approach 2:
The fan blade incorporates adjustable sections that can change their angle and configuration dynamically. The first blade section can be adjusted relative to the second, and the second relative to the third, allowing the blade to adapt its shape to minimize turbulence at different operating conditions while maintaining high speed performance.
2Volume of moving object
If the portable fan size is kept small for portability, then the convenience is improved, but the wind strength and cooling effect deteriorate
Solution Approach 1:
The adjustable blade sections are designed to nest within each other when not in use, allowing the fan to maintain a compact form factor for portability. When high wind strength is needed, the blade sections can be extended and adjusted to their optimal configuration, achieving high performance in a small package.
Solution Approach 2:
The fan blade uses adjustable sections that can change their configuration from a compact nested state to an extended high-performance state. This dynamic adjustment allows the small portable fan to achieve high wind strength when needed while maintaining portability when the adjusted sections are retracted.
3Use of energy by moving object
If low power electric devices are used in small portable fans, then the portability is maintained, but the air blowing and cooling effects deteriorate
Solution Approach 1:
The adjustable blade sections allow the fan to optimize its aerodynamic efficiency at different power levels. By adjusting the blade angles and configurations, the fan can maximize the cooling effect from available power, reducing the need for high power consumption while maintaining effective air blowing.
Solution Approach 2:
The fan blade allows changes in geometric parameters (blade angles, section positions) to optimize performance. By adjusting these parameters, the fan can achieve maximum cooling efficiency at various power levels, allowing low-power devices to deliver effective cooling performance through optimized aerodynamics rather than raw power.
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 high-speed airflow with increased air flow utilization rate, improved air speed, and extended air supply distance, while eliminating turbulence to ensure silent operation.
Implementation Method 1
a boosting mechanism is arranged in the air duct; the boosting mechanism drives air located at the air inlet to flow through the air duct
Implementation Method 2
the rectification mechanism includes a necking hood that covers the air outlet and a rectification blade group... By controlling the details in an air flow stroke, the turbulence is eliminated step by step
Data Source
AI summary
The present disclosure discloses a silent high-speed fan, including a shell; an air duct is formed on the shell; an air inlet and an air outlet are respectively provided at two ends of the air duct; a boosting mechanism is arranged in the air duct; a rectification mechanism is arranged at the air outlet; the rectification mechanism includes a necking hood that covers the air outlet and a rectification blade group composed of a plurality of rectification blades arranged coaxially on an inner side of the necking hood in an annular array. The present disclosure controls the details in an air flow stroke, so that the turbulence is eliminated step by step, and the turbulence is eliminated at the source, to achieve an effect of silently blowing air at a high speed.