(19)
(11) EP 0 823 361 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.11.1998 Bulletin 1998/45

(43) Date of publication A2:
11.02.1998 Bulletin 1998/07

(21) Application number: 97830392.3

(22) Date of filing: 25.07.1997
(51) International Patent Classification (IPC)6: B61F 5/22
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV RO SI

(30) Priority: 02.08.1996 IT MI961697

(71) Applicant: FERROLI S.p.A.
I-37047 San Bonifacio (Verona) (IT)

(72) Inventor:
  • Ferroli, Dante
    37047 San Bonifacio (Verona) (IT)

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

   


(54) High efficiency heat exchanger boiler


(57) The present invention relates to a boiler (1) comprising a prismatic hollow heat exchanger (3). The heat exchanger (3) is vertically arranged and is provided with an inside shell (4) which laterally delimits a carrying fluid circulating chamber.
Between the outer and inner shells of the heat exchanger boiler a finned gap (9) is formed, which communicates, at the top end portion thereof, with the combustion chamber (5) and, at the bottom end portion thereof, with a fume collecting and removing duct (14).






Search report