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(11)

EP 0 583 290 A1

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(43) Date of publication: 23.02.1994 Bulletin 1994/08 (21) Application number: 92909236.0 (22) Date of filing: 05.05.1992

(51) International Patent Classification (IPC):  F24H 7/ 04( . ) (86) International application number: PCT/FI1992/000141 (87) International publication number: WO 1992/020972 (26.11.1992 Gazette 1992/29)

(84) Designated Contracting States: DE GB SE (30) Priority: 10.05.1991 FI 19910002302 (71) Applicant: IMATRAN VOIMA OY SF-00100 Helsinki 10 (FI)	(72) Inventor: SALMELIN, Pentti SF-00850 Helsinki (FI) (74) Representative: Bibby, William Mark, et al  Mathisen, Macara & co. The Coach House 6-8 Swakeleys Road Ickenham Uxbridge UB10 8BZ Ickenham Uxbridge UB10 8BZ (GB)