Portable Air Purifier Guide Vanes for Longer Air Discharge
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Solution Overview
Problem
Portable air purifiers face challenges in effectively delivering purified air to a user's face due to reduced air discharge amount and narrow discharge range, resulting in inadequate air purification performance, especially when miniaturized for portability.
Innovation Solution
Incorporating guide vanes in the fan cover, which are disposed in the rotation direction of the blower fan, to improve the straightness and directionality of air discharge, allowing for increased air purification efficiency and using a low-cost fan design to enhance performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the air purifier is miniaturized for portability, then the device becomes more portable and easier to carry, but the discharge amount and front discharge range of purified air are reduced
Solution Approach 1:
The patent changes the aerodynamic parameters of air discharge by introducing guide vanes that modify the flow direction and straightness. The guide vanes are positioned at specific angles (45-60 degrees) to optimize the airflow pattern, enabling a compact device to achieve better air discharge performance through parameter optimization rather than size increase.
Solution Approach 2:
The guide vanes act as an intermediary component between the blower fan and the discharge opening. These vanes mediate the airflow by redirecting it in a controlled manner, improving the straightness and reach of the discharged air without requiring a larger fan or housing. The guide vanes transfer and redirect the kinetic energy from the fan to achieve extended discharge range.
2Weight of moving object
If the air purifier is miniaturized for portability, then the device becomes more portable and easier to carry, but the front discharge range of purified air is reduced
Solution Approach 1:
The patent optimizes the aerodynamic parameters of air discharge by introducing guide vanes that modify the flow direction and straightness. The guide vanes are positioned at specific angles (45-60 degrees) to optimize the airflow pattern, enabling a compact device to achieve better air discharge performance through parameter optimization rather than size increase.
Solution Approach 2:
The guide vanes introduce a dimensional element to the airflow control by creating a three-dimensional flow pattern. The vanes are arranged to guide air not only forward but also slightly upward and outward, extending the effective discharge range in multiple directions rather than just along a single linear path.
3Productivity
If guide vanes are added to improve air discharge straightness, then air purification performance is improved, but device complexity increases
Solution Approach 1:
The guide vanes are merged with the existing fan housing or cover structure, forming an integrated component rather than a separate assembly. This combining approach allows the guide vanes to be manufactured as a single piece with the housing, reducing the number of parts and assembly steps while maintaining the airflow guidance function.
Solution Approach 2:
The guide vanes are designed as thin, lightweight structures that can be integrated into the housing. These thin-film-like vanes provide the necessary aerodynamic guidance while adding minimal weight and complexity to the overall device 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 guide vane configuration enhances air discharge efficiency, improving the amount of purified air reaching the user's face and providing high air purification performance at a lower cost, while maintaining portability and ease of manufacturing.
Implementation Method 1
guide vanes in the fan cover, which are disposed in the rotation direction of the blower fan, to improve the straightness and directionality of air discharge
Data Source
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AI summary
Disclosed is an invention relating to a portable air purifier. The portable air purifier according to the present invention comprises: fans each of which rotates with respect to a rotary shaft extending in a first direction, and which comprises a hub and fan blades radially connected around the hub; and a fan cover provided with shielding plates for shielding the hubs, and guide vanes for guiding the discharge direction of the air discharged by the fans, wherein the foreground of the rotational area of the fan blades forms a ventilation surface, and the guide vanes are arranged in front of the ventilation surface and extend radially with respect to the rotary shaft, and each comprise a first guide surface positioned adjacent to a fan and a second guide surface connected to the first guide surface and positioned further from the fan than the first guide surface, the second guide surface being parallel to the first guide surface and the first guide surface being at a set angle (a) to the ventilation surface.