(19)

(11)

EP 2 212 638 A1

(12)

(43) Date of publication: 04.08.2010 Bulletin 2010/31 (21) Application number: 08842886.7 (22) Date of filing: 24.10.2008

(51) International Patent Classification (IPC):  F28D 9/00(2006.01) F28F 13/12(2006.01) (86) International application number: PCT/DK2008/050260 (87) International publication number: WO 2009/052834 (30.04.2009 Gazette 2009/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 26.10.2007 DK 200701536 (71) Applicant: Grundfos Management A/S 8850 Bjerringbro (DK)	(72) Inventor: RASMUSSEN, Christian DK-8830 Tjele (DK) (74) Representative: Plougmann & Vingtoft A/S  Sundkrogsgade 9 P.O. Box 831 2100 Copenhagen Ø 2100 Copenhagen Ø (DK)