(19)

(11)

EP 3 891 445 A1

(12)

(43) Date of publication: 13.10.2021 Bulletin 2021/41 (21) Application number: 19892685.9 (22) Date of filing: 03.12.2019

(51) International Patent Classification (IPC):  F25B 21/02(2006.01) (52) Cooperative Patent Classification (CPC): F25B 21/02 (86) International application number: PCT/FI2019/050866 (87) International publication number: WO 2020/115364 (11.06.2020 Gazette 2020/24)

(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: 04.12.2018 FI 20186046 (71) Applicant: Nordic 24/7 Services Oy 02200 Espoo (FI)	(72) Inventors: ELORANTA, Veli 00350 Helsinki (FI) JÄRVILEHTO, Juho 02600 Espoo (FI) (74) Representative: Laine IP Oy  Porkkalankatu 24 00180 Helsinki 00180 Helsinki (FI)