Valve assembly for switching and/or regulating a medium flow of an aerospace engine and aerospace engine

摘要

A valve assembly for switching and/or regulating a medium flow of an aerospace engine includes a drive, a valve and a flexible separator element. The drive includes one or more electrically actuatable actuators, which change their length in the direction of a longitudinal axis of the valve assembly when a control voltage is applied to the actuators. The valve includes a valve piston, which can be moved back and forth along the longitudinal axis by the drive and which has a valve member. The flexible separator element delimits a working space of the valve from the drive, as a result of which the medium, which flows through the valve or is present in the working space, is hermetically separated from the drive.

主权项

1. A valve assembly configured to switch or regulate a medium flow of an aerospace engine, the valve assembly comprising:
a drive, which has one or more electrically actuatable actuators, which are configured to change their length in a direction of a longitudinal axis of the valve assembly when a control voltage is applied to the one or more electrically actuatable actuators; a valve, which comprises a valve member and a valve piston configured to move back and forth along the longitudinal axis by the drive; and a flexible separator element, which delimits a working space of the valve from the drive and hermetically separates the drive from the medium flowing through the valve or present in the working space,
wherein the piston plate of the valve piston is disposed in a housing shoulder extending in a direction of a drive housing and which is connected to the working space with its open end,when the valve is opened the piston plate moves away from the working space in a direction of a shoulder plate,a first spring is disposed between the shoulder plate and the piston plate, andthe first spring presses the valve member against a valve seat when a voltage is not applied to the one or more electrically actuatable actuators.