Global Patent Index - EP 1379775 B1

EP 1379775 B1 2006-05-10 - VALVE FOR CONTROLLING LIQUIDS

Title (en)

VALVE FOR CONTROLLING LIQUIDS

Title (de)

VENTIL ZUM STEUERN VON FLÜSSIGKEITEN

Title (fr)

SOUPAPE POUR COMMANDER LE PASSAGE DE FLUIDES

Publication

EP 1379775 B1 (DE)

Application

EP 02729861 A

Priority

  • DE 0201293 W
  • DE 10118053 A

Abstract (en)

[origin: WO02084106A1] The invention relates to a valve for controlling liquids comprising an, in particular, piezoelectric actuator unit (20) for actuating a valve element. Said valve comprises at least one setting plunger (19) and at least one actuating plunger (16) that is guided inside a valve body (15). Said actuating plunger actuates a valve closing element, which interacts with at least one valve seat (24) provided on the valve body (15). In a closed position, a suction and spill port (14) is cut off from a drain space (25) from which a return duct (26) branches off. A hydraulic chamber (18) is located between the setting plunger (19) and the actuating plunger (16) and is provided for transferring the motion of the setting plunger (19) to the actuating plunger (16). In order to keep the size of the actuator unit (20) small, the actuating plunger (16) is mounted in a manner that is, in essence, hydraulically force balanced when the valve closing element is closed.

IPC 8 full level (invention and additional information)

F02M 47/00 (2006.01); F02M 59/46 (2006.01); F02M 47/02 (2006.01); F02M 51/00 (2006.01); F02M 51/06 (2006.01); F16K 31/02 (2006.01); F16K 31/42 (2006.01); F02M 63/00 (2006.01)

CPC (invention and additional information)

F02M 63/0026 (2013.01); F02M 47/025 (2013.01); F02M 47/027 (2013.01); F02M 63/0073 (2013.01); F02M 63/008 (2013.01); F02M 2200/704 (2013.01); F02M 2547/003 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family

WO 02084106 A1 20021024; DE 10118053 A1 20021024; DE 50206746 D1 20060614; EP 1379775 A1 20040114; EP 1379775 B1 20060510; JP 2004518906 A 20040624; US 2003132410 A1 20030717; US 6843464 B2 20050118