(19)
(11) EP 0 483 075 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.11.1992 Bulletin 1992/47

(43) Date of publication A2:
29.04.1992 Bulletin 1992/18

(21) Application number: 91830218.3

(22) Date of filing: 23.05.1991
(51) International Patent Classification (IPC)5: F23J 13/00, F23J 13/02, F23J 13/04
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR LI NL

(30) Priority: 25.10.1990 IT 2201790 U

(71) Applicant: CARBOFUEL OFFICINE MECCANICHE S.P.A.
I-21055 Gorla Minore (Varese) (IT)

(72) Inventor:
  • Carpaneto, Giacomo, c/o CARBOFUEL OFFICINE
    I-21055 Gorla Minore (Varese) (IT)

(74) Representative: Cicogna, Franco 
Ufficio Internazionale Brevetti Dott.Prof. Franco Cicogna Via Visconti di Modrone, 14/A
20122 Milano
20122 Milano (IT)


(56) References cited: : 
   
       


    (54) Fitting for coupling air and fume pipes in tightly enclosed boilers


    (57) Fitting (1) with flue elements having a double stainless steel wall construction, which fitting comprises two coaxial ducts (2,3), the outer duct of which, of smaller length,encompasses the inner duct at one end thereof so as to define with the latter a gap (4) including a plurality of air inlets (5), the inner duct and gap being communicated with a balanced flow boiler, the inner duct nesting, at its opposite end portion, in a flue element (6).






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