EP 0250973 A3 19891213 - CENTRIFUGAL PUMP
Title (en)
CENTRIFUGAL PUMP
Publication
Application
Priority
DE 3622168 A 19860702
Abstract (en)
[origin: EP0250973A2] In the case of a centrifugal pump with an impeller (10), which is located centrically behind an inlet aperture (16) and surrounded by a pump chamber (14) adjoined by a collecting chamber (11), which has an outlet aperture (12), the intake rate, particularly the dry intake, is improved by the fact that the pump chamber (14) is sealed off from the collecting chamber (11) in a radial direction by side walls (17), the side walls (17) having at least one through passage (18) and the entire area of the through passage being between 100 and 200% of the size of the inlet aperture (16). <IMAGE>
IPC 1-7
IPC 8 full level
F04D 29/42 (2006.01)
CPC (source: EP)
F04D 29/426 (2013.01)
Citation (search report)
- [A] DE 2901456 A1 19801211 - REICH KG REGEL & SICHERHEITS
- [A] US 3183837 A 19650518 - HELLIWELL GUY S
- [A] US 1832619 A 19311117 - COOK CHARLES D
- [A] DE 2446862 A1 19760408 - ALLWEILER AG
- [A] US 2540269 A 19510206 - LE CLAIR CAMILLE CLARE SPRANKL
- [A] FR 2376310 A1 19780728 - NORSK HYDRO AS [NO]
- [A] FR 2274804 A1 19760109 - LUCAS ELECTRICAL CO LTD [GB]
- [A] US 3945771 A 19760323 - ARAKAWA SHINICHIRO
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0250973 A2 19880107; EP 0250973 A3 19891213; EP 0250973 B1 19910123; DE 3622168 A1 19880114; DE 3622168 C2 19891228; DE 3767585 D1 19910228
DOCDB simple family (application)
EP 87108462 A 19870611; DE 3622168 A 19860702; DE 3767585 T 19870611