Fin for heat exchanger and heat exchanger using the fin

(19)

(11)

EP 2 236 971 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	05.03.2014 Bulletin 2014/10

(43)	Date of publication A2:
	06.10.2010 Bulletin 2010/40

(21)	Application number: 10003127.7

(22)	Date of filing: 24.03.2010

(51)

International Patent Classification (IPC):

F28F 1/12^(2006.01)

(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 MK MT NL NO PL PT RO SE SI SK SM TR
	Designated Extension States:
	AL BA ME RS

(30)

Priority:

25.03.2009 CN 200910119663

(71)	Applicants:
	Sanhua Holding Group Co., Ltd. Zhejiang Province 312500 (CN) Danfoss A/S 6430 Nordborg (DK)

(72)	Inventors:
	Jianlong, Jiang Zhejiang 310018 (CN) Huang, Lin-jie East Amherst NY 14051 (US)

(74)	Representative: Knoblauch, Andreas
	Patentanwälte Dr. Knoblauch Schlosserstrasse 23 60322 Frankfurt am Main 60322 Frankfurt am Main (DE)

(54)	Fin for heat exchanger and heat exchanger using the fin

(57) The present invention discloses a fin for a heat exchanger, the fin comprises a plurality of fin plates (10) which are adjacent to one another, each of the fin plates (10) is formed with louvers (20); and a connecting portion which connects adjacent fin plates at an end of the adjacent fin plates. The connecting portion comprises a middle curved section (31) and side curved sections (32) located on the sides of the middle curved section (31), and the curvature radius of the middle curved section (31) is larger than the curvature radius of the side curved sections (32). With the technical solution of the invention, since the contact area between the flat tubes and the fin increases, the fin efficiency is increased and thus the heat exchange performance of the heat exchanger is enhanced.

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