EP 0851127 B1 20030205 - Diagnostic method and apparatus for vacuum pumps
Title (en)
Diagnostic method and apparatus for vacuum pumps
Title (de)
Diagnoseverfahren und -Gerät für Vakuumpumpen
Title (fr)
Procédé et dispositif de diagnostic pour pompes à vide
Publication
Application
Priority
IT TO961091 A 19961227
Abstract (en)
[origin: EP0851127A2] The invention relates to a diagnostic method and apparatus for detecting in advance the wear of rotatable components in vacuum pumps, said pumps comprising gas pumping stages formed by rotor disks (113, 114) secured to a rotatable shaft (123) driven by an electric motor, wherein a warning signal for either a pre-alarm or an alarm wear condition is generated when predetermined wear conditions are reached, by expanding the signal from an accelerometer in contact with the vacuum pump into a Fourier spectrum. <IMAGE>
IPC 1-7
IPC 8 full level
F04D 19/04 (2006.01); F04D 27/02 (2006.01)
CPC (source: EP)
F04D 19/04 (2013.01); F04D 27/001 (2013.01); F04D 27/0292 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0851127 A2 19980701; EP 0851127 A3 19990616; EP 0851127 B1 20030205; DE 69718889 D1 20030313; DE 69718889 T2 20031030; IT 1289811 B1 19981016; IT TO961091 A1 19980627
DOCDB simple family (application)
EP 97202185 A 19970712; DE 69718889 T 19970712; IT TO961091 A 19961227