(19)

(11)

EP 2 561 302 A2

(12)

(88) Date of publication A3: 08.03.2012 (43) Date of publication: 27.02.2013 Bulletin 2013/09 (21) Application number: 11720899.1 (22) Date of filing: 11.04.2011

(51) International Patent Classification (IPC):  F28F 3/04(2006.01) F28F 3/08(2006.01) (86) International application number: PCT/SE2011/050434 (87) International publication number: WO 2011/133087 (27.10.2011 Gazette 2011/43)

(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 (30) Priority: 21.04.2010 SE 1050392 (71) Applicant: Alfa Laval Corporate AB 221 00 Lund (SE)	(72) Inventors: BLOMGREN, Ralf SE-239 34 Skanör (SE) BLOMGREN, Fredrik SE-217 43 Malmö (SE)