EP 1775476 A1 20070418 - Control device for motor pumps
Title (en)
Control device for motor pumps
Title (de)
Steuervorrichtung für Motorpumpenaggregat
Title (fr)
Dispositif de commande de groupe motopompe
Publication
Application
Priority
EP 05022404 A 20051013
Abstract (en)
An automatic mechanical device, suitable for controlling the operation of an electric pump responsive to the flow and to the pressure within the device, comprising a hollow body (63) comprising an upper shell (40) and a lower shell (41), having an inlet (20) and an outlet (21). On the external surface of the upper shell (40) means responsive to the pressure (60) are connected comprising a first control body (1) pushed towards said hollow body (63) by a return spring (14). Said first control body (1) is operated by a membrane (16) located outside to the hollow body (63) and perceives the pressure of the liquid within the hollow body (63) through an opening engaged by a check valve (52) and a calibrated hole (53) that time a hydraulic delay of the pressure. The first control body (1) has a stepped protrusion (7) that operates a control sphere (8) that in turn operates a lever (9) having at the end a tip (11) capable to operate a tip (10) belonging to a second lever (12) that, rotating, is capable to operate a switch (13) that starts the pump. The device comprises means responsive to the flow, having a second control body (2) with function of check valve, having a magnet (3) that operates a magnet (4) pivotally connected outside, when the magnet (3) is approached to the magnet (4). The magnet (4) operates a lever (5) having an end (62) capable of pushing on the electric switch (13) that starts the pump.
IPC 8 full level
F04B 49/02 (2006.01); F04D 15/02 (2006.01)
CPC (source: EP)
F04D 15/0209 (2013.01); F04D 15/0227 (2013.01)
Citation (search report)
- [A] EP 0528726 A1 19930224 - POMPES SALMSON SA [FR]
- [A] EP 0663553 A1 19950719 - CO GE S R L [IT]
- [A] EP 0819851 A2 19980121 - GARDENA KRESS & KASTNER GMBH [DE]
- [A] EP 0459434 A2 19911204 - VALDES OSVALDO [CL]
- [A] EP 1074745 A1 20010207 - ENG & MARK S R L [IT]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DOCDB simple family (application)
EP 05022404 A 20051013