Vacuum Suctioning Unit Guide Vane Angle 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 the second guide vane to be positioned outside, increasing the vertical length of the guide vanes to minimize flow loss and enhance air guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the first guide vane is inclinedly disposed to guide air flow, then air flow guidance is improved, but the entrance angle becomes large causing 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 angle that provides sufficient flow guidance while minimizing flow loss and energy waste.
Solution Approach 2:
The patent introduces a second guide vane that can be adjusted or positioned to work in conjunction with the first guide vane. This dynamic configuration allows the guide device to adapt to different flow conditions, providing effective guidance while controlling flow loss through coordinated action of multiple guide vanes.
2Ease of operation
If the second guide vane is disposed outside the passage, then the guide distance is increased for better air guidance, but the device complexity increases
Solution Approach 1:
The patent merges the second guide vane with the motor bracket structure, integrating the guidance function into the existing housing. This combination extends the guide distance for improved air guidance while avoiding the complexity of adding a completely separate component, as the second guide vane utilizes the available space in the motor bracket.
Solution Approach 2:
The patent utilizes the vertical dimension by extending the second guide vane outside the horizontal passage. This dimensional approach increases the guide distance and improves air guidance effectiveness without significantly increasing horizontal complexity, as the extension occurs in the vertical direction within the existing 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 optimized entrance angle and positioning of guide vanes reduce air flow loss, maximizing fan efficiency and ensuring effective air guidance to the flow guide.
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
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.