Vacuum Suctioning Unit Guide Vane Design to Reduce Flow Loss
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Solution Overview
Problem
Existing vacuum suctioning units experience significant flow loss due to a large entrance angle of the guide vane, which affects fan efficiency.
Innovation Solution
A vacuum suctioning unit with a guide device that includes a first guide vane with an entrance angle ranging from 10 to 27 degrees, a second guide vane disposed on the bottom surface, and a motor bracket with a passage that allows for increased air flow guidance, where at least a portion of the second guide vane has a vertical length that gradually increases to the shaft, optimizing air guidance and minimizing flow loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the first guide vane is inclinedly disposed to allow air to flow in the direction of air discharged from the impeller, then the flow loss is reduced, but the entrance angle becomes large which causes flow loss
Solution Approach 1:
The patent applies parameter changes by optimizing the entrance angle of the first guide vane to a specific range (10-27 degrees). This quantitative parameter adjustment resolves the contradiction by finding the optimal value that simultaneously reduces flow loss while maintaining an appropriate entrance angle, avoiding the excessive angle problem of prior art
Solution Approach 2:
The patent introduces a second guide vane that can be disposed outside the passage defined by the guide body and motor bracket. This dynamic configuration allows the air guidance system to adapt to flow requirements, providing sufficient guidance distance while maintaining optimal entrance angles, thus resolving the contradiction between flow loss reduction and entrance angle 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 optimized entrance angle and guide vane design minimize flow loss, enhancing fan efficiency and ensuring sufficient air guidance to the flow guide, thereby improving overall performance.
Implementation Method 1
an impeller for allowing air introduced through the air entrance to flow
Implementation Method 2
a first guide vane disposed on a side surface of the guide body to guide the air discharged from the impeller; and a second guide vane disposed on a bottom surface of the guide body and connected to the first guide vane to guide air moving by the first guide vane
Data Source
AI summary
The vacuum suctioning unit of the present invention includes: a cover provided with an air entrance; an impeller for circulating air that enters the air entrance; a motor provided with a shaft connected to the impeller; a guide device for guiding the flow of air that exits an exit of the impeller; and a motor housing that houses the motor and is provided with an air exit. The guide device includes: a guide body disposed below the impeller; a first guide vane formed on a side surface of the guide body and guiding air discharged from the impeller; and a second guide vane formed on the bottom surface of the guide body and connected to the first guide vane to guide air that is moved by the first guide vane. The entrance angle of the first guide vane is within the range of 10 to 27 degrees.