(19)
(11) EP 0 923 992 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.02.2000 Bulletin 2000/05

(43) Date of publication A2:
23.06.1999 Bulletin 1999/25

(21) Application number: 98310373.0

(22) Date of filing: 17.12.1998
(51) International Patent Classification (IPC)7: B04C 5/04
(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: 17.12.1997 GB 9726659

(71) Applicant: NOTETRY LIMITED
Little Somerford, Wiltshire SN15 5JN (GB)

(72) Inventor:
  • Dyson, James
    Little Somerford, Wilthshire SN15 5JN (GB)

(74) Representative: Devons, David Jon 
MARKS & CLERK, 57-60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)

   


(54) Cyclonic separating apparatus


(57) Cyclonic separating apparatus comprising a cyclone (114) for effecting cyclonic separation and a tangential inlet for supplying fluid to the cyclone (114), the tangential inlet having at least two points of entry (152) into the interior of the cyclone (114). Each point of entry consists of a longitudinal slot (152) located in the cyclone for directing fluid into the cyclone in a tangential manner and each slot has a vane (154) for directing fluid through the respective slot.
Providing two or more points of entry (152) to the interior of the cyclone (114) effectively spreads the inlet over a greater proportion of the circumference of the cyclone (114). The dimensions of the apparatus (110) can therefore be reduced and, furthermore, losses due to friction can be minimised.






Search report