Neck Fan Vortex Shell Assembly for Multi-Directional Quiet Cooling
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Solution Overview
Problem
Existing fans, both fixed and portable, fail to provide comfortable and efficient cooling for extended wear due to fixed shapes that do not accommodate the user's body, leading to discomfort and poor experience.
Innovation Solution
A neck fan design featuring a tubular body with centrifugal fans at both ends, a vortex tongue structure, and adjustable air outlets that allow air to be directed from multiple angles, providing cooling from various directions while being worn comfortably around the neck.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed-shaped portable fan is designed, then the structure is simple and easy to manufacture, but the user comfort and wearing experience deteriorate due to inability to accommodate different body shapes
Solution Approach 1:
The patent applies the dynamics principle by designing the fan shell as a flexible, deformable structure that can change its shape to accommodate different neck sizes and body contours. The shell transitions from a rigid fixed shape to a dynamic adaptable form, allowing it to conform to various user anatomies while maintaining structural integrity and manufacturing feasibility.
Solution Approach 2:
The patent implements parameter changes by modifying the physical properties of the fan shell material to enable flexibility and deformability. The shell material parameters are changed from rigid to flexible, allowing the structure to adapt its shape while remaining simple to manufacture and effective for user comfort.
2Device complexity
If air outlets are obstructed during wear, then the fan structure can be simplified, but the air circulation efficiency and cooling effect deteriorate
Solution Approach 1:
The patent applies local quality by designing different regions of the fan shell with distinct functions: some areas are optimized for air outlet accessibility while others provide structural support and flexibility. This ensures that air circulation paths remain unobstructed while maintaining overall structural simplicity and adaptability.
Solution Approach 2:
The patent resolves the contradiction by transitioning from a two-dimensional flat fan structure to a three-dimensional tubular configuration that wraps around the neck. This dimensional change allows air outlets to be positioned in multiple spatial directions, preventing obstruction while maintaining structural simplicity.
3Productivity
If a tubular structure with centrifugal fans at both ends is used, then air can be blown from multiple directions improving cooling efficiency, but the device complexity increases
Solution Approach 1:
The patent applies merging by integrating the housing structure, air channels, and centrifugal fan assemblies into a unified tubular configuration. The left and right fan assemblies are merged with the central tubular body, allowing multi-directional air output while maintaining overall structural simplicity through functional integration.
Solution Approach 2:
The patent implements universality by designing the tubular structure to serve multiple functions simultaneously: it acts as the housing, the air channel conduit, and the mounting structure for both centrifugal fans. This multi-functionality enables multi-directional cooling without proportionally increasing device complexity.
4Weight of moving object
If the fan is designed to be lightweight for comfort, then the wearing comfort improves, but the wind generation capability and cooling power deteriorate
Solution Approach 1:
The patent applies mechanics substitution by replacing heavy traditional fan blade designs with optimized centrifugal fan assemblies that generate equivalent or superior wind power with reduced weight. The centrifugal fan mechanism substitutes for conventional axial fans, achieving better power-to-weight ratio through improved aerodynamic design.
Solution Approach 2:
The patent implements composite materials by using lightweight yet strong materials for the fan housing and fan blade construction. The combination of lightweight materials maintains or enhances wind generation capability while significantly reducing the overall weight for improved wearing comfort.
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 design ensures efficient and comfortable air circulation, reducing wind noise and air volume loss, enhancing user experience by allowing air to be blown from multiple directions without obstructing the outlets, and maintaining a balanced weight distribution.
Implementation Method 1
a plurality of blades, configured to rotate to intake air from an outside of the centrifugal fan to generate wind
Implementation Method 2
The pressurizing plate is a curved wall arranged around ends of some of the plurality of blades
Implementation Method 3
a vortex tongue structure, including a pressurizing plate and a wind guiding plate connected to the pressurizing plate
Data Source
AI summary
A neck fan is provided and is configured to be worn around a neck of a user. The neck fan includes: a shell, defining a receiving channel; and two centrifugal fans. One of the two centrifugal fans is disposed at an end of the receiving channel, and another one of the two centrifugal fans is disposed at another end of the receiving channel. Each of the two centrifugal fans includes: a plurality of blades, configured to rotate to intake air from an outside of the centrifugal fan to generate wind; and a vortex tongue structure, including a pressurizing plate and a wind guiding plate connected to the pressurizing plate. The pressurizing plate is a curved wall arranged around ends of some of the plurality of blades, the wind guiding plate protrudes from and is extending away from an outer surface of the pressurizing plate.