Bladeless Fan Nozzle Design for Smooth Directional Airflow
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Solution Overview
Problem
Conventional and bladeless fans produce uneven and turbulent airflow, and their nozzles inadequately guide high-speed airflow, leading to a multi-directional dispersion that reduces the effectiveness of the cooling effect.
Innovation Solution
A bladeless fan design with a base, support rod, and fan arm that allows for multiple axes of rotation and adjustment, combined with nozzles that emit airflow in a single direction, and includes a diffuser to evenly distribute airflow, enabling targeted airflow control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a typical nozzle is used to guide high-speed airflow, then the airflow can be directed, but the high-speed airflow disperses into a multi-directional airflow pattern, reducing cooling effectiveness
Solution Approach 1:
The fan arm is divided into multiple segments (first fan arm portion, second fan arm portion) that can rotate independently about different axes. This segmentation allows each portion to control airflow direction in different planes, achieving precise single-directional airflow control while eliminating the dispersion problem of traditional nozzles
Solution Approach 2:
The fan arm portions are made dynamically adjustable through rotational movement about multiple axes. The first fan arm portion rotates about a first axis, and the second fan arm portion rotates about a second axis, enabling real-time adjustment of airflow direction to maintain precise targeting and prevent multi-directional dispersion
2Productivity
If conventional fans with blades are used, then airflow can be generated, but the airflow is uneven and turbulent, reducing cooling effectiveness
Solution Approach 1:
The invention extracts and eliminates the blades from the traditional fan structure, using an impeller enclosed within a housing instead. This removal of external blades prevents turbulence generation while maintaining airflow production capability through the enclosed impeller system that directs air through controlled passages
Solution Approach 2:
The impeller is nested within a housing that contains and directs the airflow through controlled passages. This nested structure allows the impeller to generate airflow while the housing confines and smooths the flow, preventing turbulence and ensuring uniform airflow delivery to the fan arm
3Device complexity
If the fan arm is fixed in position, then the structure is simple, but the airflow direction cannot be adjusted for targeted cooling
Solution Approach 1:
The fan arm is designed with dynamic rotational capability about multiple axes instead of being fixed. The first fan arm portion rotates about a first axis, and the second fan arm portion rotates about a second axis, providing adaptability for targeted cooling while maintaining a relatively simple overall structure through the use of rotational joints
Solution Approach 2:
The fan arm structure incorporates rotation about multiple axes (adding dimensional freedom), allowing airflow direction to be adjusted in multiple planes. This multi-axis rotation provides comprehensive directional control without requiring complex mechanical assemblies, achieving versatility with moderate complexity
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 design provides smooth, high-speed airflow in a single-directional pattern, allowing users to adjust airflow direction and intensity for precise cooling, enhancing the cooling effect.
Implementation Method 1
Rotation of an impeller within the base can generate airflow that is emitted from the fan arm
Implementation Method 2
A bladeless fan design with a base, support rod, and fan arm that allows for multiple axes of rotation and adjustment, combined with nozzles that emit airflow in a single direction, and includes a diffuser to evenly distribute airflow
Data Source
AI summary
A bladeless fan is provided. In one embodiment, a bladeless fan is provided having a base having an impeller disposed therein, a support rod extending from the base, and a fan arm movably coupled to the support rod at a connection joint. The impeller and the support rod can be axially aligned along a central axis of the base. At least a portion of the connection joint can be horizontally aligned with the central axis of the base. The fan arm can have nozzles disposed therein which are horizontally offset from the central axis of the base.