Investigation of the Optimal Vacuum Depth Created by an Ejector Depending on the Value of the Supply Pressure

Introduction. Vacuum ejectors operating on the Venturi principle are used in various industries and are essential pneumatic devices. An important characteristic of a vacuum ejector is the vacuum depth it creates, where the maximum vacuum value is obtained in a certain range of supply pressure. Failure to comply with the supply pressure affects the performance of the ejector itself and automated vacuum systems in general. One of the options for solving this problem is to establish the recommended range of supply pressure in a fairly narrow pressure range, at which a guaranteed value of vacuum depth is reached without using the maximum capabilities of the ejector. At the same time, the technical literature does not provide the values of the dependence of the vacuum depth on the supply pressure over the entire range of ejector operation, which the authors would like to draw attention to in this work. The research objective was to conduct experimental studies on establishing the true values of the maximum vacuum depth depending on the magnitude of the ejector input pressure.