公开(公告)号：US20180141057A1

公开(公告)日：2018-05-24

申请号：US15568628

申请日：2016-04-22

申请人： ALFA LAVAL CORPORATE AB

发明人： Peter HAGQVIST ,  Olle TÖRNBLOM ,  Torbjörn LARSEN ,  Björn WERNERSON ,  Galya SIMEONOVA ,  Mustafa RASOL

IPC分类号： B04B1/08 ,  B04B7/14 ,  B04B11/02 ,  B04B9/02

CPC分类号： B04B1/08 ,  B04B5/005 ,  B04B7/14 ,  B04B9/02 ,  B04B11/02 ,  F01M2013/0422

摘要： A centrifugal separator includes a frame and a drive member configured to rotate a rotating part in relation to the frame around an axis of rotation. The rotating part includes a centrifuge rotor enclosing a separation chamber. The separation chamber includes a stack of separation discs arranged coaxially around the axis of rotation at a distance from each other such as to form passages between each two adjacent separation discs. The stack of separation discs includes a first type of separation discs having an outer diameter of A or below, and at least one separation disc of a second type having outer diameter B or above, wherein diameter B is larger than diameter A. At least one of the separation discs of the second type is arranged at a position in the disc stack that is within the upper 15% of the total number of separation discs and at least one of said first type of separation disc is arranged axially above the uppermost separation disc of the second type.