(19)
(11) EP 0 475 493 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.04.1992 Bulletin 1992/18

(43) Date of publication A2:
18.03.1992 Bulletin 1992/12

(21) Application number: 91202155.7

(22) Date of filing: 23.08.1991
(51) International Patent Classification (IPC)5: F24F 3/044, F24F 3/16
(84) Designated Contracting States:
AT BE CH DE DK FR GB LI NL SE

(30) Priority: 29.08.1990 NL 9001890

(71) Applicant: C.H. DE JONG B.V.
NL-6821 JZ Arnhem (NL)

(72) Inventor:
  • de Jong, Eugen P.M.
    NL-2021 ZM Haarlem (NL)

(74) Representative: de Wit, Gerard Frederik (NL) et al
Octrooi- en Markenbureau de Wit B.V. Breitnerlaan 146
NL-2596 HG Den Haag
NL-2596 HG Den Haag (NL)


(56) References cited: : 
   
       


    (54) System for purifying air


    (57) A system for purifying and possibly conditioning of air in buildings and suchlike is shown, having a feeding duct (16) to the building, an exhaust duct (22) from the building and a recirculation connection (23), blowers (1,2) and filter means (4,5,6) in which the feeding duct contains a dust filter (4), an eletronic filter (5) having a fibre mat in an electric field without causing ionisation, and an active carbon filter (6), the system being suitable to recirculate all the exhaust air.






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