公开(公告)号：US12072268B2

公开(公告)日：2024-08-27

申请号：US17496117

申请日：2021-10-07

Applicant: epro GmbH

Inventor： Michael Osterholt ,  Thomas Wewers ,  Tomasz Lech

IPC: G01M99/00 ,  F04B51/00 ,  F04B53/14 ,  G01B7/00

CPC classification number: G01M99/005 ,  F04B51/00 ,  F04B53/144 ,  G01B7/003 ,  F04B2201/0201 ,  F04B2201/021

Abstract: A machine monitoring system automatically determines an optimal trigger angle for monitoring the rod drop of a reciprocating compressor, and sets the trigger angle configuration value accordingly. A key pulse is monitored using a key phase sensor, the amplitude of the rod drop transducer voltage versus time (or rotation angle) is analyzed, and a position of the minimal change in slope of the rod drop transducer voltage signal relative to the key mark is determined. The optimal trigger angle is determined based on this temporal position, the current speed and the configured piston angle. The optimal trigger angle is provided to the machine monitoring system for configuration. The system thereby relieves the service engineer from having to test several trigger angles with manually-operated test instruments to determine the optimal trigger angle.

公开(公告)号：US11719231B2

公开(公告)日：2023-08-08

申请号：US16463602

申请日：2017-11-10

Applicant: Leybold GmbH

Inventor： Matthias Nahrwold ,  Michael Pajonk ,  Dirk Schiller ,  Daniel Reinhard ,  Sebastian Walzel

IPC: F04B37/14 ,  F04B35/04 ,  F04B49/06 ,  F04B49/20 ,  F04C25/02 ,  F04C28/08 ,  F04C28/24

CPC classification number: F04B37/14 ,  F04B35/04 ,  F04B49/065 ,  F04B49/20 ,  F04C25/02 ,  F04C28/08 ,  F04C28/24 ,  F04B2201/021 ,  F04B2201/0601 ,  F04B2201/0604 ,  F04B2203/0201 ,  F04B2203/0209 ,  F04B2203/0211

Abstract: A processing chamber is connected to a lock chamber. For evacuating the lock chamber and/or the processing chamber a vacuum pump system is provided. The latter comprises a vacuum pump equipment having at least one vacuum pump. Further, the vacuum pump system comprises a valve device for connection to the lock chamber as well as a controller. For noise reduction, a cyclically occurring operating parameter is determined by means of the controller. From said parameter it is determined at which point in time the valve is opened such that temporally before the opening of the valve the rotational speed of at least one of the vacuum pumps can be reduced. This results in a considerable noise reduction at continuing good pump-out times.