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1. (WO2018077691) DIAPHRAGM FOR A CENTRIFUGAL COMPRESSOR

Pub. No.:    WO/2018/077691    International Application No.:    PCT/EP2017/076583
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Thu Oct 19 01:59:59 CEST 2017
IPC: F04D 29/68
F04D 29/16
F04D 29/42
Applicants: NUOVO PIGNONE TECNOLOGIE S.R.L.
Inventors: BROGELLI, Riccardo
Title: DIAPHRAGM FOR A CENTRIFUGAL COMPRESSOR
Abstract:
A diaphragm 1 for a centrifugal compressor having a rear surface 2 configured to at least partly face an impeller 3, the rear surface 2 having a first portion 2a defining at least in part a diffuser 4 and a second portion 2b facing the impeller 3; the diaphragm has a duct 5 provided with an inlet 6 and an outlet 7, the outlet 7 being located on the second portion 2b of the rear surface 2, the inlet 6 being located on the rear surface 2 at a point where the static pressure is higher with respect to the static pressure at the outlet 7.