Air purifier
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Solution Overview
Problem
Existing air purifiers require a large booster size to discharge filtered air to upper areas, limiting their effectiveness and efficiency in covering wide spaces.
Innovation Solution
An air purifier design that utilizes a booster with a small size and a unique internal and external configuration to switch air flow direction, incorporating a booster case with a bent discharge passage and a hemispherical shape to maintain performance while minimizing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a booster of large size is used to discharge air to upper areas, then the air discharge performance is improved, but the device size and complexity increase
Solution Approach 1:
The booster case is designed with a hemispherical shape instead of a conventional cylindrical or rectangular structure. This curved geometry allows for more efficient airflow patterns and compact packaging, achieving the required air discharge performance with a smaller overall booster volume. The hemispherical form factor optimizes the internal space utilization and airflow dynamics.
Solution Approach 2:
The discharge passage is configured in a bent, three-dimensional path rather than a straight linear arrangement. By utilizing vertical and radial dimensions within the hemispherical case, the airflow is guided through a compact curved path that achieves effective air discharge to upper areas without requiring a long straight passage, thus reducing the booster size.
2Volume of moving object
If the booster size is reduced, then the device compactness is improved, but the air discharge performance deteriorates
Solution Approach 1:
The discharge passage cross-sectional area is varied along its length, being larger near the fan inlet and progressively smaller toward the outlet. This parameter change optimizes the airflow velocity and pressure distribution, maintaining effective air discharge performance while accommodating the passage within a compact hemispherical case. The gradual area reduction helps convert pressure energy to kinetic energy efficiently.
Solution Approach 2:
The hemispherical case geometry provides optimal volume efficiency and airflow characteristics. The curved surfaces guide airflow smoothly without sharp transitions, reducing turbulence and energy losses. This spherical form factor achieves maximum air discharge performance for the minimum possible volume.
3Ease of operation
If a bent discharge passage is used within the booster case, then the airflow direction is effectively switched, but the internal complexity increases
Solution Approach 1:
The bent discharge passage is integrated smoothly into the hemispherical case structure, using the case's inherent curvature to guide airflow. Rather than adding separate complex guiding components, the passage utilizes the natural geometry of the hemispherical form, reducing overall structural complexity while achieving effective airflow direction switching from horizontal to vertical discharge.
Solution Approach 2:
The discharge passage is merged with the booster case structure itself, forming an integrated design where the case walls define the passage boundaries. This integration eliminates the need for separate passage components and simplifies manufacturing, reducing device complexity while maintaining effective airflow direction control.
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 allows for efficient air discharge in both upper and lower directions, enhancing air volume and maintaining performance with a smaller booster size, thus improving coverage and efficiency.
Implementation Method 1
a booster fan rotatably disposed inside the booster case, and sucking air in a direction which is in line with a rotary axis and sending the air in a vertical direction to the rotary axis
Implementation Method 2
The booster discharge passage configured to be bent toward the booster outlet within the booster case so as to send the air flowing from the booster fan to the booster outlet
Implementation Method 3
The booster discharge passage decreases in cross-sectional area toward the booster outlet
Data Source
Figure 1
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AI summary
The present disclosure relates to an air purifier. The air purifier includes: a body having an inlet formed on a circumferential surface thereof and an outlet formed on an upper surface thereof, and a booster disposed at an upper side of the body and switching a flow direction of air which flows to the upper side through the outlet. The booster includes a booster case having a booster inlet at one side facing the outlet and a booster outlet in an opposite direction to the booster inlet, and a booster fan rotatably disposed inside the booster case, and sucking air in a direction which is in line with a rotary axis and sending the air in a vertical direction to the rotary axis. An inner guide which guides the air flowing by the booster fan to the booster outlet is disposed at an inner side of the booster case.