Asymmetrical Double-Outlet Blower for Balanced Airflow
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Solution Overview
Problem
Conventional blowers with single outlets face inefficiencies when providing air currents with different volumetric flow rates and pressures, leading to reduced overall performance and increased energy consumption due to interactions between flow channels with varying air resistances.
Innovation Solution
An asymmetrical double-outlet blower design featuring a high-pressure outlet with a larger opening cross-sectional area and a low-pressure outlet with a smaller area, along with a longer channel length for the low-pressure outlet, and distinct cross-sectional heights, ensures equivalent performance under different air resistances by separating airflow into distinct channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single outlet is used in conventional blowers, then the device complexity is reduced, but the ability to provide different volumetric flow rates and pressures for different applications deteriorates
Solution Approach 1:
The blower is divided into two separate flow channels with distinct outlets - a first outlet for high-pressure airflow and a second outlet for low-pressure airflow. Each channel is independently designed with optimized cross-sectional areas and path lengths to deliver specific performance characteristics, allowing the system to serve multiple applications simultaneously without increasing overall device complexity
Solution Approach 2:
The patent employs asymmetrical design in the flow channels by setting different opening cross-sectional areas for the two outlets and creating unequal path lengths from the inlet to each outlet. The first flow channel has a larger cross-sectional area and shorter path for high-pressure delivery, while the second channel has a smaller cross-sectional area and longer path for low-pressure delivery, optimizing performance for each outlet type
2Adaptability or versatility
If double outlets with different air resistances are used, then the ability to provide different volumetric flow rates is improved, but the overall efficiency deteriorates due to interaction between flow channels
Solution Approach 1:
The internal housing structure is segmented to create two independent flow channels that are physically separated. This segmentation prevents interaction between the high-pressure and low-pressure flow channels, eliminating negative interference effects and ensuring that each channel operates independently with optimized efficiency for its specific pressure and flow rate requirements
3Stress or pressure
If the opening cross-sectional area of the high-pressure outlet is increased, then the high-pressure airflow performance is improved, but the low-pressure outlet performance may deteriorate
Solution Approach 1:
Each outlet is designed with locally optimized characteristics tailored to its specific function. The first outlet (high-pressure) is equipped with a larger opening cross-sectional area and shorter flow path to maximize pressure delivery, while the second outlet (low-pressure) is designed with a smaller cross-sectional area and longer path optimized for volumetric flow. This local quality differentiation ensures that optimizing one outlet does not compromise the other, as each channel operates independently with its own optimized geometry
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 achieves balanced airflow with high-pressure and low-pressure currents, optimizing volumetric flow rates, air pressure, energy consumption, and noise levels by maintaining equivalent performance across varying air resistances.
Implementation Method 1
The impeller is accommodated within the accommodation space of the housing, spatially corresponding to the inlet, and rotated around a rotation axis. An airflow is inhaled through the inlet and transported to the low-pressure outlet and the high-pressure outlet, respectively.
Data Source
AI summary
The disclosure relates to an asymmetrical double-outlet blower, including an upper case, a lower case and an impeller. The upper case includes an inlet. The lower case and the upper case are assembled to form a housing having an accommodation space, and form a first outlet and a second outlet. The accommodation space is in fluid communication with the first outlet, the second outlet and the inlet. The first outlet and the second outlet are disposed on a lateral periphery of the housing and face two opposite directions, respectively. An opening cross-sectional area of the first outlet is less than an opening cross-sectional area of the second outlet. The impeller is accommodated within the accommodation space of the housing, spatially corresponding to the inlet, and rotated around a rotation axis. An airflow is inhaled through the inlet and transported to the first outlet and the second outlet, respectively.