(19)

(11)

EP 3 947 971 A1

(12)

(43) Date of publication: 09.02.2022 Bulletin 2022/06 (21) Application number: 20707051.7 (22) Date of filing: 21.02.2020

(51) International Patent Classification (IPC):  F04B 39/02(2006.01) F04B 39/12(2006.01) (52) Cooperative Patent Classification (CPC): F04B 39/12; F04B 39/0261; F04B 39/0253 (86) International application number: PCT/EP2020/054614 (87) International publication number: WO 2020/193030 (01.10.2020 Gazette 2020/40)

(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: 28.03.2019 TR 201904661 (71) Applicant: Arçelik Anonim Sirketi 34445 Istanbul (TR)	(72) Inventors: OZDILEK, Melih 34950 ISTANBUL (TR) GUNDUZ, Cihan 34950 ISTANBUL (TR) BATUR, Yasin 34950 ISTANBUL (TR)