Pneumatisches Servoventil mit Einstellbarer Antriebseinheit

Details

Veröffentlichungs-Nr.

EP3409989

Aktenzeichen

EP17461541

Anmeldetag

31. Mai 2017

Veröffentlichung

15. September 2021

Erteilung

15. September 2021

Rechtsraum

EP

IPC

F16K41/12F02K1/00F16K11/07F16K27/04F16K31/06H01F7/13

Abstract

A servo valve for an actuator is described. The servo valve comprises a housing (4), a sleeve (12) provided within the housing comprising an axis (A) and having a plurality of metering holes (26, 28, 30, 32) for communication with a cavity (16) within. A metering rod (42) extends within the cavity for metering flow of pneumatic fluid through the metering holes. The metering rod is coupled to a drive unit (48) for axial movement within the cavity, the drive unit comprising a drive unit housing (50), a solenoid (68) and an adjustable core (54). The adjustable core comprises a threaded first portion (56) having a thread (59) and a second portion (58). The thread of the first portion engages a thread (51) extending through the drive unit housing for adjustment of the relative position of the adjustable core with respect to the solenoid. The drive unit can be calibrated by adjusting the relative position of the adjustable core to alter current/displacement characteristics of the drive unit.

Anmelder

Firma

Hamilton Sundstrand Corporation

Land

🇺🇸 USA

Fachgebiete