Neck Fan Wind Guide Layout for Even Multi-Outlet Airflow
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Solution Overview
Problem
Conventional portable fans are uncomfortable to wear for extended periods due to their fixed shape, and they often have inefficient air distribution, leading to reduced cooling effectiveness and increased noise.
Innovation Solution
A neck fan design featuring a shell with adjustable air outlets and a wind guide member that directs airflow evenly across the neck, allowing for customizable airflow and improved comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed-shaped portable fan is used, then the structure is simple and easy to manufacture, but the user comfort and wearing experience deteriorate when worn for a long period
Solution Approach 1:
The fan shell is divided into multiple adjustable segments that can be positioned at different angles and orientations. This allows the air outlet to be directed toward different body parts (face, neck, shoulders) while maintaining a relatively simple overall structure that is easy to manufacture.
Solution Approach 2:
The fan incorporates adjustable components that allow users to dynamically change the shape and orientation of the air outlet during use. This dynamic adaptability improves comfort for different wearing scenarios without requiring a completely complex reconfigurable structure.
2Device complexity
If a single air outlet is used, then the device structure is simple, but the air distribution efficiency and cooling effectiveness deteriorate
Solution Approach 1:
The single air outlet is segmented into multiple air outlets distributed across different surfaces of the fan shell. Each outlet directs airflow to specific body areas, improving overall cooling effectiveness while maintaining a straightforward multi-component structure that does not significantly increase device complexity.
Solution Approach 2:
Different air outlets are positioned at specific locations on the fan shell to target different body parts (face, neck, shoulders). This local optimization of air distribution improves cooling efficiency without requiring a uniformly complex structure throughout the entire device.
3Device complexity
If airflow is concentrated in one direction, then the fan structure is simple, but the cooling coverage and effectiveness deteriorate
Solution Approach 1:
The concentrated single-direction airflow is segmented into multiple airflow streams directed at different angles and locations. This segmentation expands the cooling coverage area to include face, neck, and shoulders simultaneously while maintaining a relatively simple structure using multiple basic airflow channels.
Solution Approach 2:
The airflow distribution transitions from a single-dimensional concentrated stream to a multi-dimensional distributed pattern. Air outlets are arranged on multiple surfaces of the fan shell, creating three-dimensional airflow coverage that expands cooling area without requiring excessively complex internal channel structures.
4Productivity
If multiple air outlets are added to improve cooling coverage, then the cooling effectiveness is improved, but the device complexity and noise increase
Solution Approach 1:
The fan uses segmented air outlets that are independently positioned on different shell surfaces. This segmentation achieves improved cooling effectiveness by directing airflow to multiple body parts while keeping each individual outlet structure simple and the overall configuration manageable.
Solution Approach 2:
Each air outlet is optimized for its specific location and function (face cooling, neck cooling, shoulder cooling). This local optimization allows multiple outlets to work efficiently together without requiring uniformly complex structures throughout the entire device, thereby controlling overall complexity while improving cooling effectiveness.
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 neck fan provides effective and comfortable cooling by ensuring uniform airflow distribution, reducing noise, and enhancing user experience through adjustable airflow and ergonomic design.
Implementation Method 1
a fan assembly, arranged inside shell and configured to generate wind flowing along the air duct to reach the at least two air outlets
Implementation Method 2
The wind guide member is disposed between the fan assembly and the first air outlet and is configured to guide a first portion of the wind to flow towards the first air outlet
Data Source
AI summary
A neck fan includes: a shell, wherein the shell defines an air duct and at least two air outlets; a fan assembly, arranged inside shell and configured to generate wind flowing along the air duct to reach the at least two air outlets; and a wind guide member, received in the air duct and fixed to a wall of the shell. The at least two air outlets comprises a first air outlet and a second air outlet, the first air outlet is disposed between the fan assembly and the second air outlet. The wind guide member is disposed between the fan assembly and the first air outlet and is configured to guide a first portion of the wind to flow towards the first air outlet.