EP 0782057 A1 19970702 - A double valve control device
Title (en)
A double valve control device
Title (de)
Steuereinrichtung eines Doppelventils
Title (fr)
Dispositif de commande d'une vanne double
Publication
Application
Priority
- SE 9504535 A 19951219
- SE 9602782 A 19960715
Abstract (en)
A control device for controlling and monitoring two fluid valves, wherein each fluid valve comprises a drive means which is adapted for activation by an associated control signal, and a movable valve element which is biassed toward a first position in which fluid flow through the valve is prevented and which can be driven by said drive means to a second position in which fluid is able to flow through the valve, a first switch which is actuable by the displaceable element of the first valve, a second switch which is actuable by the displaceable element of the second valve, wherein each switch is biassed towards a first position and each switch can be driven to a second position when the displaceable element of the associated valve takes its second position. According to the invention, both switches (20, 21) are adapted to directly influence the control signal paths in both switch positions and are connected in a manner to prevent application of the first control signal (S1) to the first valve (20) with the first valve in its first position when application of the first control signal (S1) takes place after a predetermined time period has lapsed from the time of activating of the second valve, and to prevent application of the second control signal (S1) to the second valve when in its first position if the application of the second control signal (S2) takes place after a predetermined time period has lapsed subsequent to activation of the first valve. Both switches (20, 21) are connected in a manner to permit each control signal to be applied to a respective drive means when both switches simultaneously occupy their first position or simultaneously occupy their second position. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 20/00 (2006.01)
CPC (source: EP)
F15B 20/001 (2013.01)
Citation (search report)
- [X] DE 2002890 A1 19710729 - WORONESCHSKIJ SAWOD KUSNETSCHN
- [X] DE 3230056 A1 19840216 - HERION WERKE KG [DE]
- [A] EP 0558976 B1 19950726 - HERION WERKE KG [DE]
- [A] DE 4221756 A1 19940105 - REXROTH MANNESMANN GMBH [DE]
- [A] DE 2839341 A1 19800313 - DAIMLER BENZ AG
- [A] EP 0497450 A1 19920805 - ROSS OPERATING VALVE CO [US]
- [A] DE 3529802 A1 19870226 - HERION WERKE KG [DE]
Designated contracting state (EPC)
CH DE ES FR GB IT LI
DOCDB simple family (publication)
EP 0782057 A1 19970702; EP 0782057 B1 20010905; DE 69614987 D1 20011011; DE 69614987 T2 20020411; ES 2162017 T3 20011216; SE 505037 C2 19970616; SE 9602782 D0 19960715; SE 9602782 L 19970616
DOCDB simple family (application)
EP 96850212 A 19961217; DE 69614987 T 19961217; ES 96850212 T 19961217; SE 9602782 A 19960715