Flared Fan Duct Layout for Air Purifier Room Circulation
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Solution Overview
Problem
Conventional air purifier devices often suffer from impaired air cleaning performance due to poor air circulation, which can result in 'dead spaces' within a room where air is not effectively cleaned.
Innovation Solution
An air purifier device featuring a fan duct that extends upright with a flared design from an intermediate portion to both ends, facilitating convergent airflow intake and divergent exhaust, combined with a fan positioned within the intermediate portion to enhance air circulation and cleaning performance, along with an ionizing device to improve particle removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional fan and filter arrangement is used, then the device structure is simple, but the air circulation performance is poor and dead spaces form in the room
Solution Approach 1:
The fan duct is designed with a flared geometry that curves outward from the intermediate portion toward both ends, creating a curved airflow path. This curvature enables the air flow to reach greater portions of the room and penetrate into areas that straight ducts cannot access, thereby eliminating dead spaces and improving overall air circulation without adding complex mechanical components.
Solution Approach 2:
The fan duct extends in the upright direction with flared portions that expand in horizontal dimensions. This three-dimensional configuration allows the air flow to distribute both vertically and horizontally, covering multiple spatial dimensions simultaneously and improving air circulation throughout the room volume rather than just in a single plane.
2Productivity
If the fan duct is designed with smooth transitions, then air resistance is reduced and air circulation is facilitated, but the manufacturing complexity increases
Solution Approach 1:
The smooth transitions between the intermediate portion and flared portions are achieved through curved geometries rather than sharp corners. These continuous curves reduce turbulence and air resistance while maintaining manufacturability through standard duct forming techniques, balancing aerodynamic performance with fabrication ease.
3Productivity
If the fan is positioned in the intermediate portion of the flared duct, then air flow convergence is improved, but the device complexity increases
Solution Approach 1:
The intermediate portion of the fan duct is specifically designed with a narrower cross-section compared to the flared portions. This localized geometric feature creates a natural convergence zone that directs air flow toward the fan blades, improving airflow efficiency and fan performance without requiring additional guiding components or complex mechanical structures.
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 improves air circulation and cleaning performance by ensuring that air from a greater portion of the room passes through the device, reducing air resistance and increasing the clean air delivery rate, while the ionizing device enhances particle removal and reduces fan power consumption and noise.
Implementation Method 1
a fan arranged to produce an air flow through the air purifier device
Implementation Method 2
the transitions between the intermediate portion and the flared portions are (substantially) free from any sharp corners or angles, whereby the air resistance is reduced in the fan duct
Data Source
AI summary
An air purifier device is provided including a fan arranged to produce an air flow through the air purifier device, and a fan duct for guiding the air flow produced by the fan. The fan duct extends in an upright direction of the air purifier device. The air purifier device further includes an air intake arranged below a lower end of the fan duct, and an exhaust arranged at an upper end of the fan duct so as to exhaust purified air in an upward direction from the air purifier device when the air purifier device is in use. The fan duct is flared in direction from an intermediate portion of the fan duct towards both it ends, and the fan is arranged at least partly in the intermediate portion. A facilitated circulation of air through the room and through the air purifier device standing in the room is provided.