Dual-Function Spool Control for Compact Multi-Ejector Vacuum Units
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Solution Overview
Problem
Existing multi-ejector vacuum production devices are complex and bulky, making them difficult to integrate into compact machines, especially when precise control is required.
Innovation Solution
A compact vacuum production device with a control member featuring a single spool that can simultaneously connect and disconnect each ejector to the pressurized air and vacuum circuits, simplifying control and reducing space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple ejectors with different venturi profiles are used to adapt vacuum production to requirements, then vacuum production adaptability is improved, but device complexity and space requirements increase
Solution Approach 1:
The control member is designed with a single spool that can selectively connect any ejector to both the pressurized air circuit and vacuum circuit simultaneously. This universal control mechanism replaces the need for separate control valves for each ejector, reducing control complexity while maintaining the ability to adapt vacuum production to different requirements by selecting appropriate ejectors.
2Adaptability or versatility
If multiple ejectors with different venturi profiles are used to adapt vacuum production to requirements, then vacuum production adaptability is improved, but device complexity and space requirements increase
Solution Approach 1:
The control member merges the control functions for multiple ejectors into a single integrated component. The spool design allows one control element to manage connections for multiple ejectors to both pressurized air and vacuum circuits, consolidating what would traditionally require separate control valves and reducing the overall space required for the vacuum production device.
3Reliability
If each ejector is controlled by a separate valve and connected by poppets to prevent leaks, then vacuum circuit sealing is improved, but device complexity increases
Solution Approach 1:
The spool in the control member serves multiple functions simultaneously: it controls the connection of ejectors to both pressurized air and vacuum circuits, and incorporates sealing poppets within its structure. This universal design maintains vacuum circuit sealing reliability while eliminating the need for separate control valves and external poppet assemblies for each ejector.
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 enables simpler and more compact control of vacuum production, allowing for efficient integration into compact machines while maintaining effective vacuum generation.
Implementation Method 1
The inlet nozzle of the ejector is connected to a pressurised air circuit by means of a control valve
Implementation Method 2
The air introduced into the inlet nozzle via an inlet port is accelerated in the venturi, creating a vacuum in the intermediate chamber and in the vacuum circuit via the suction port
Data Source
AI summary
A vacuum production device includes at least a first ejector having an inlet port and a suction port. The device includes a control member that includes a body having at least one pressure inlet and one suction inlet intended to be connected respectively to a pressurised air circuit and to a vacuum circuit, and a first spool mounted so as to be able to move in the body between a connection position in which the inlet port of the first ejector is connected to the pressure inlet and the suction port of the first ejector is connected to the suction inlet, and a disconnection position in which the inlet port of the first ejector is disconnected from the pressure inlet and the suction port of the first ejector is disconnected from the suction inlet. A handling device includes such a vacuum production device.