(19)

(11)

EP 3 737 898 A1

(12)

(43) Date of publication: 18.11.2020 Bulletin 2020/47 (21) Application number: 19701137.2 (22) Date of filing: 09.01.2019

(51) International Patent Classification (IPC):  F25D 31/00(2006.01) (86) International application number: PCT/FI2019/050012 (87) International publication number: WO 2019/138160 (18.07.2019 Gazette 2019/29)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 10.01.2018 FI 20185029 (71) Applicant: Sensiqo Oy 00530 Helsinki (FI)	(72) Inventors: SEPPÄLÄINEN, Erkki 02700 Kauniainen (FI) VISCONTI, Andrea 01620 Vantaa (FI) (74) Representative: Berggren Oy, Turku  P.O. Box 99 Tykistökatu 2-4 B 20521 Turku 20521 Turku (FI)