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Machine translation
1. (WO2004031591) LOW-NOISE PUMP COOLED BY THE PUMPED WATER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/031591    International Application No.:    PCT/IT2003/000537
Publication Date: 15.04.2004 International Filing Date: 09.09.2003
IPC:
F04D 1/06 (2006.01), F04D 13/06 (2006.01), F04D 29/58 (2006.01)
Applicants: Q & P S.P.A. [IT/IT]; Via dei Ronchi 1, I-35127 Padova (IT) (For All Designated States Except US).
OTTOBONI, Gianni [IT/IT]; (IT) (For US Only)
Inventors: OTTOBONI, Gianni; (IT)
Agent: BENETTIN, Maurizio; Via Sorio, 116, I-35141 Padova (IT)
Priority Data:
PD2002A000255 04.10.2002 IT
Title (EN) LOW-NOISE PUMP COOLED BY THE PUMPED WATER
(FR) POMPE A FAIBLE BRUIT REFROIDI PAR L'EAU POMPEE
Abstract: front page image
(EN)The invention is a new pump comprising an electric immersion motor (M) and two or more centrifugal impellers (G) enclosed by two concentric cylindrical jackets (Ci, Ce), so as to create an interspace (la) between the internal jacket (Ci) and the motor (M) and an interspace (Im) between said two jackets (Ci, Ce). The pumped water flows through the internal interspace (la) striking the motor (M), passes through the centrifugal impellers (G) and through the interspace (Im) between the two jackets (Ci, Ce) before being expelled by the pump. The internal jacket (Ci) has a hole (Cio) in its bottom (Cif), through which the volume inside the internal jacket (Ci) communicates with the interspace (Im). The two connections (Oa, Om) are positioned radially to the jackets (Ci, Ce), opposite each other and coaxial. An inverter controls the pump automatically.
(FR)L'invention concerne une nouvelle pompe comprenant un moteur électrique à immersion (M) et au moins deux turbines centrifuges (G) renfermées dans deux gaines cylindriques concentriques (Ci, Ce), de manière à créer un espace (la) entre la gaine interne (Ci) et le moteur (M) et un espace (Im) entre les deux gaines (Ci, Ce). L'eau pompée s'écoule à travers l'espace interne (la), frappe le moteur (M), traverse les turbines centrifuges (G) puis traverse l'espace (Im) entre les deux gaines (Ci, Ce) avant d'être évacuée par la pompe. La gaine interne (Ci) présente un orifice (Cio) ménagé sur la partie inférieure (Cif), à travers lequel le volume interne de la gaine interne (Ci) communique avec l'espace (Im). Les deux raccordements (Oa, Om) sont placés de manière radiale par rapport aux gaines (Ci, Ce), ils se trouvent à l'opposé l'un de l'autre et ils sont coaxiaux. Un inverseur commande la pompe automatiquement.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, OM, PH, PL, PT, RO, RU, SD, SE, SG, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)