(19)
(11) EP 1 248 050 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.01.2003 Bulletin 2003/01

(43) Date of publication A2:
09.10.2002 Bulletin 2002/41

(21) Application number: 02006605.6

(22) Date of filing: 22.03.2002
(51) International Patent Classification (IPC)7: F24F 7/06, B08B 15/00, E03F 5/08
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 02.04.2001 IT TV010038

(71) Applicant: Granzotto S.r.l.
31058 Susegana (Treviso) (IT)

(72) Inventors:
  • Granzotto, Albino
    31058 Susegana (Treviso) (IT)
  • Granzotto, Massimo
    31058 Susegana (Treviso) (IT)

(74) Representative: Modiano, Guido, Dr.-Ing. et al
Modiano & Associati SpA Via Meravigli, 16
20123 Milano
20123 Milano (IT)

   


(54) Extraction system, particularly for extracting noxious gases from spaces located partially below ground level


(57) An extraction system, particularly for extracting noxious gases from an enclosed space (50) located partially below ground level, comprising a plurality of floor-level intakes (2) connected to a first suction duct (5) associated with a water discharge channel provided with means that allow the unidirectional flow of the water. The first suction duct (5) is conveniently affected by at least one second duct (8) suitable for the forced external expulsion of the collected gas.






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