(19)
(11) EP 1 336 761 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.06.2009 Bulletin 2009/24

(43) Date of publication A2:
20.08.2003 Bulletin 2003/34

(21) Application number: 03075340.4

(22) Date of filing: 05.02.2003
(51) International Patent Classification (IPC): 
F04D 15/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(30) Priority: 13.02.2002 IT MI20020275

(71) Applicant: Schneider Electric Industrie Italia S.p.A.
02010 Vazia (Rieti) (IT)

(72) Inventor:
  • Pesenti, Claudio
    24100 Bergamo (IT)

(74) Representative: De Gregori, Antonella et al
Ing. Barzano' & Zanardo Milano S.p.A. Via Borgonuovo 10
20121 Milano
20121 Milano (IT)

   


(54) Control device for autoclave pump


(57) A control device for operation of an autoclave pump of a water distribution network, of the type comprising a mechanical part, with the task of detecting pressures and flows by means of moving parts, and an electronic part, with the task of managing pump supply in relation to the parameters detected; all signals are sent to a microprocessor electronic control system which, thanks to simultaneous detection and measurement of flow and pressure, makes it possible to avoid the pressure oscillation typical of control devices of the traditional type and prevent the pump from starting up and shutting down continually. The device is also capable of detecting any abnormal conditions that take place, such as excessive flow, no water at the pump inlet side or a leak in the user circuit, taking steps to shut down operation of the entire system to prevent damage to the pump and the internal circuits.







Search report