Bladeless Fan Nozzle Control for Smooth Targeted Airflow
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Solution Overview
Problem
Conventional and bladeless fans produce uneven and turbulent airflow, with nozzles inadequately guiding high-speed airflow into a multi-directional pattern, reducing the effectiveness of the cooling effect.
Innovation Solution
A bladeless fan design featuring a base, support rod, and fan arm with adjustable nozzles that allow for independent control of airflow direction and volume, utilizing a diffuser to evenly distribute airflow and a fluid separator to direct airflow into single-directional nozzles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a nozzle is used to guide high-speed airflow, then airflow direction control is improved, but the airflow disperses into a multi-directional pattern reducing cooling effectiveness
Solution Approach 1:
The fan arm is divided into multiple independently rotatable segments (first fan arm portion and second fan arm portion) that can be controlled separately. Each segment has its own airflow opening and nozzle, allowing precise directional control of airflow to different locations while maintaining focused single-directional flow patterns from each nozzle.
Solution Approach 2:
The fan arm portions are made rotatable about different axes (third axis for the portions, second axis for the entire fan arm), enabling dynamic adjustment of airflow direction. This dynamic control allows the nozzles to maintain focused single-directional airflow while directing it to various positions, resolving the contradiction between direction control and flow focus.
2Productivity
If an impeller generates high-speed airflow, then cooling capacity is improved, but the airflow becomes turbulent and uneven
Solution Approach 1:
A diffuser is introduced as an intermediary component between the impeller and the nozzles. The diffuser receives turbulent high-speed airflow from the impeller and transforms it into more uniform flow before directing it through the nozzles. This intermediary structure maintains the high cooling capacity while improving airflow uniformity and reducing turbulence.
Solution Approach 2:
The diffuser changes the flow parameters (velocity distribution, pressure distribution) of the air between the impeller and nozzle. By transforming the turbulent high-velocity flow into a more uniform flow pattern, the parameter changes enable both high cooling capacity and improved airflow stability.
3Adaptability or versatility
If the fan arm structure is made complex to enable multi-directional airflow, then airflow coverage is improved, but the device complexity increases
Solution Approach 1:
The rotatable fan arm structure serves multiple functions: it directs airflow to different positions, adjusts airflow direction, and controls flow distribution. By making the fan arm portions rotatable about different axes, a single structure achieves multi-directional coverage without requiring multiple separate components, thus improving versatility while limiting complexity growth.
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 provides smooth, high-speed, and targeted airflow in a single direction, enhancing the cooling effect by allowing precise adjustment of airflow to specific areas.
Implementation Method 1
Rotation of an impeller within the base can generate airflow that is emitted from the fan arm
Implementation Method 2
utilizing a diffuser to evenly distribute airflow
Implementation Method 3
a nozzle inadequately guides the high-speed airflow and thus the high-speed airflow disperses into a multi-directional airflow pattern
Data Source
AI summary
A bladeless fan is provided. In one embodiment, a bladeless fan is provided having a base, a support arm extending from the base, and a fan arm movably coupled to the support arm. The fan arm can have nozzles configured to emit airflow along a plane. The base, support arm, and fan arm can be configured to allow independent adjustment of an amount of airflow from each of the nozzles, independent adjustment of a direction of airflow from each of the nozzles, and adjustment of a position of the plane.