Multi-Stage Venturi Vacuum Generator With Integrated Sealing Frames
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Solution Overview
Problem
Existing multi-stage venturi cells have issues with fragile valves, high leak risk due to numerous seals, and complex assembly/disassembly, leading to decreased suction performance and increased manufacturing/maintenance time.
Innovation Solution
A vacuum generator with a cluster of venturi cells, where mixers are interconnected by frames forming sealing surfaces, reducing the number of seals and facilitating assembly/disassembly, with lip seals ensuring leak prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If individual venturi cells are used with multiple mixers, then suction flow rate is improved, but the number of seals increases leading to higher leak risk
Solution Approach 1:
Multiple venturi cells are merged into a single integrated body, with mixers from different cells positioned in the same suction chamber. This consolidation reduces the number of separate seals required while maintaining multi-stage suction capability, thereby improving reliability without sacrificing productivity
2Reliability
If multiple seals are used to ensure sealing between stages and mixers, then vacuum efficiency is maintained, but manufacturing complexity and assembly time increase
Solution Approach 1:
The patent combines multiple venturi cells into one unit, reducing the total number of seals needed. This simplifies the device structure and reduces manufacturing complexity while preserving vacuum efficiency through strategic seal placement at critical interfaces
3Productivity
If multiple seals and valves are used in multi-stage venturi cells, then suction performance is maintained, but maintenance time and difficulty increase
Solution Approach 1:
By merging multiple venturi cells into a single integrated structure, the patent reduces the number of separate components requiring maintenance. The consolidated design allows for easier access and replacement of seals and valves, significantly reducing maintenance time while preserving suction performance
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 solution minimizes leaks and simplifies maintenance, enhancing suction performance and reducing assembly time while maintaining vacuum efficiency.
Implementation Method 1
a nozzle B which is intended to be connected to a compressed air supply circuit, and which opens into a first suction chamber C1... The air coming from the nozzle B which, by passing through the first chamber C1, suctions the air present in said first chamber C1
Data Source
AI summary
A vacuum generator including a cluster of multi-stage venturi cells, each having a nozzle which is sealingly secured in an inlet orifice of a first mixer provided with a first suction orifice, and a second mixer fixed to the first mixer in such a manner that the second mixer extends coaxially to the first mixer and is spaced apart from an outlet orifice of said first mixer in order to form with the same a second suction orifice, characterized in that the first mixers are firmly interconnected by a first frame extending between the first suction orifices and the outlet orifices of the first mixers to form a first sealing surface surrounding said first mixers, and the second mixers are firmly interconnected by a second frame extending between the inlet orifices and the outlet orifices of the second mixers to form a second sealing surface surrounding said second mixers.