EP 1131562 A1 20010912 - MULTI-STAGE EJECTOR PUMP
Title (en)
MULTI-STAGE EJECTOR PUMP
Title (de)
MEHRSTUFIGE EJEKTORPUMPE
Title (fr)
POMPE A EJECTEUR A ETAGES MULTIPLES
Publication
Application
Priority
- DE 29916531 U 19990920
- EP 0009208 W 20000920
Abstract (en)
[origin: WO0121961A1] A multi-stage ejector pump has an ejector nozzle system (18) whose nozzles are situated coaxially behind each other and are axially set apart from each other (compressed gaz nozzle (18A) and diffusors (18B, 18C)). Said ejector nozzle system can be axially sealingly pushed into a nozzle-receiving shaft (14) of a housing element (12). The housing wall is interrupted in the area of the suction gas inlet gap (24A, 24B) between adjacent nozzles to provide a fluid connection to suction chambers. The aim of the invention is to provide a multi-stage ejector pump of this type which has a compact construction, interchangeable nozzles and a high degree of efficiency. To this end, the ejector nozzle systems (18) are made up of a set of individual nozzles and nozzle spacers (22A, 22B) and each of the individual nozzles is provided with support elements on its outer periphery. Said support elements are axially set apart and provide tilt-free or low-tilt support in relation to the wall of the nozzle-receiving shaft (14). The nozzles and the nozzle spacers are held in contact with each other.
IPC 1-7
IPC 8 full level
F04F 5/22 (2006.01); F04F 5/46 (2006.01); F04F 5/52 (2006.01)
CPC (source: EP US)
F04F 5/467 (2013.01 - EP US); F04F 5/52 (2013.01 - EP US)
Citation (search report)
See references of WO 0121961A1
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
DE 29916531 U1 20010208; DE 50010514 D1 20050714; EP 1131562 A1 20010912; EP 1131562 B1 20050608; US 6582199 B1 20030624; WO 0121961 A1 20010329
DOCDB simple family (application)
DE 29916531 U 19990920; DE 50010514 T 20000920; EP 0009208 W 20000920; EP 00962511 A 20000920; US 85611101 A 20010604