(19)
(11) EP 0 995 496 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.07.2001 Bulletin 2001/27

(43) Date of publication A2:
26.04.2000 Bulletin 2000/17

(21) Application number: 99308286.6

(22) Date of filing: 20.10.1999
(51) International Patent Classification (IPC)7: B04B 1/00, B04B 1/08, B04B 5/00, B04B 7/08
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 20.10.1998 US 175981

(71) Applicant: FLEETGUARD, INC.
Nashville, Tennessee 32717 (US)

(72) Inventors:
  • Herman, Peter K.
    Cookeville, Tennesee 38506 (US)
  • Weston, Donald
    Algood, Tennesee 38501 (US)

(74) Representative: Everitt, Christopher James Wilders et al
fJ CLEVELAND 40/43 Chancery Lane
London WC2A 1JQ
London WC2A 1JQ (GB)

   


(54) A centrifugal separator


(57) A centrifugal separator (20) for removing particulate matter from a fluid includes a base (30) defining inlet (41), an outer shell (31) assembled to the base (30), a stationary centertube (34) assembled to the base (30), and a rotor assembly (20a) which is mounted onto the centertube (34) and positioned within the outer shell (31). The rotor assembly (20a) is bearingly mounted to the centertube (34) for rotation about the centertube (34). The rotor assembly (20a) includes a rotor shell (26), a cone-stack assembly (24), and a retention-medium sleeve (21) positioned between the cone-stack assembly (24) and the rotor shell (24) and the rotor shell (26) for receiving and retaining particulate matter which is centrifugally from the fluid being "processed" by the centrifugal separator (20). A water-absorbent material is included as part of the retention-medium sleeve (21), whose preferred material is a high-void medium of at lest 70 per cent. An additional retention-medium member formed into a coil-like shape is positioned between the cone-stack assembly (24) and the base (30). The base (30) includes a pair of tangential flow jet nozzles (50,51) which are used for driving the rotor assembly (20a).






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