Neck Fan Wind Guide Design for Adjustable Airflow and Comfort
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Solution Overview
Problem
Conventional portable fans are uncomfortable to wear due to their fixed shape, leading to poor user experience during extended use, and lack adaptability to different neck sizes.
Innovation Solution
A neck fan design featuring a shell with an adjustable bending angle, an inner shell with a wind guide portion, and a fan assembly that directs air through an air duct and outlets, allowing for customizable airflow and 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 adaptability to different neck sizes deteriorates
Solution Approach 1:
The patent applies the dynamics principle by making the shell bending angle adjustable rather than fixed. The shell can be bent to different angles to adapt to various neck sizes and shapes, transforming a static structure into a dynamic one that can change its configuration. This resolves the contradiction by maintaining manufacturing simplicity while significantly improving adaptability to different users.
Solution Approach 2:
The patent changes the geometric parameter of the shell (bending angle) to achieve adaptability. By allowing the shell to be bent to different angles, the same fan structure can accommodate different neck sizes without requiring multiple designs or complex adjustment mechanisms, thus maintaining ease of manufacture while improving versatility.
2Device complexity
If a fixed-shaped portable fan is used, then the device complexity is low, but the user comfort during extended use deteriorates
Solution Approach 1:
The adjustable shell bending angle provides a simple yet effective way to improve user comfort without adding complex mechanisms. The shell can be manually adjusted to fit different users, providing a customized wearing experience that enhances comfort during extended use while keeping the overall device complexity low.
3Adaptability or versatility
If the shell bending angle is made adjustable, then the adaptability to different neck sizes is improved, but the device complexity increases
Solution Approach 1:
The patent implements adjustability through a simple hinge connection between shell segments rather than complex mechanical mechanisms. This allows the shell to be bent to different angles with minimal additional components, achieving high adaptability while keeping the increase in device complexity to a minimum.
Solution Approach 2:
The shell is divided into multiple segments that can be connected through hinges, allowing independent adjustment of each segment's angle. This segmentation enables flexible adaptation to different neck sizes without requiring a completely complex adjustable mechanism, as each segment can be adjusted separately.
4Productivity
If the wind guide portion diameter is increased, then the airflow efficiency is improved, but the device volume increases
Solution Approach 1:
The patent applies local quality by increasing the diameter of the wind guide portion specifically at the location where airflow efficiency is most critical (near the fan assembly), while keeping other parts of the device compact. This localized enlargement optimizes airflow without significantly increasing the overall device volume, as the expansion is confined to a specific region rather than the entire structure.
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 adjustable airflow, enhancing user comfort and usability across various neck sizes, while maintaining portability and efficiency.
Implementation Method 1
The fan assembly is configured to generate wind flowing along the wind guide portion to enter the air duct of the outer shell
Implementation Method 2
a wind guide tongue, connected to and extending from the top wall of the shell, wherein the wind guide tongue is curved, surrounds a portion of the fan assembly, and is configured to guide the wind to flow towards the plurality of air outlets
Data Source
AI summary
A neck fan includes: an outer shell, defining a receiving space, wherein at least portion of the receiving space serves as an air duct; an inner shell, received in the receiving space and connected to an inner surface of the outer shell, wherein the inner surface is facing towards the receiving space; a fan assembly, arranged in the inner shell. The inner shell comprises a wind guide portion communicating with the air duct; a diameter of the wind guide portion is increased in a direction extending from the fan assembly to the air duct. The fan assembly is configured to generate wind flowing along the wind guide portion to enter the air duct of the outer shell.