Title (en)

Heat exchanger for refrigerator and method for manufacturing a tube thereof

Title (de)

Wärmetauscher für einen Kühlschrank und Verfahren zur Herstellung eines Rohres dafür

Title (fr)

Échangeur thermique pour réfrigérateur et procédé de fabrication d'un tube correspondant

Publication

EP 1852669 A1 20071107 (EN)

Application

EP 07250620 A 20070215

Priority

KR 20060039725 A 20060502

Abstract (en)

A heat exchanger for a refrigerator and a method for manufacturing a tube thereof with improved heat exchanger heat transfer efficiency. The heat exchanger for a refrigerator comprising of: a tube (30) to guide a refrigerant; and a plurality of ridges (31) disposed on an inner peripheral surface of the tube, the ridges configured to cause the refrigerant flowing along the tube to form a turbulent flow. The method of manufacturing a tube (30) having a plurality of ridges (31) comprising the steps of: providing a surface of a plate (60); forming ridges (31) on the surface of the plate; and coupling opposite longitudinal edges (61,62) of the plate such that the surface of the plate provided with the ridges becomes an inner peripheral surface of the tube.

IPC 8 full level

F28F 1/40 (2006.01); B21C 37/08 (2006.01); B21C 37/20 (2006.01); B21C 37/24 (2006.01); B21D 5/12 (2006.01); F28F 13/18 (2006.01); B21B 1/22 (2006.01)

CPC (source: EP KR US)

B21C 37/08 (2013.01 - EP US); B21C 37/205 (2013.01 - EP US); B21H 8/005 (2013.01 - EP US); F25B 39/00 (2013.01 - KR); F28F 1/32 (2013.01 - KR); F28F 1/40 (2013.01 - EP US); F28F 1/42 (2013.01 - KR); F28F 13/12 (2013.01 - KR); F28F 13/182 (2013.01 - EP US); F28D 2021/007 (2013.01 - EP US); F28D 2021/0071 (2013.01 - EP US); Y10T 29/49384 (2015.01 - EP US)

Citation (search report)

• [XY] US 2003019614 A1 20030130 - IWAMOTO TAKASHI [JP], et al
• [XY] JP S6115088 A 19860123 - MATSUSHITA ELECTRIC IND CO LTD
• [XY] JP H02175881 A 19900709 - HITACHI CABLE
• [XY] JP 2002195788 A 20020710 - KOBE STEEL LTD
• [X] EP 1087198 A1 20010328 - DAIKIN IND LTD [JP]
• [X] DE 19643137 A1 19970424 - MITSUBISHI SHINDO KK [JP]
• [X] US 5791405 A 19980811 - TAKIURA MASAYOSHI [JP], et al
• [X] JP S5543360 A 19800327 - ITO IND
• [X] JP S62106292 A 19870516 - TOSHIBA CORP
• [X] JP H10288491 A 19981027 - DENSO CORP
• [X] JP 2004191034 A 20040708 - USUI KOKUSAI SANGYO KK
• [X] JP S62178890 A 19870805 - NGK INSULATORS LTD
• [A] JP H09243284 A 19970919 - KUBOTA KK

Designated contracting state (EPC)

DE FR GB

Designated extension state (EPC)

AL BA HR MK YU

DOCDB simple family (publication)

EP 1852669 A1 20071107; CN 101067529 A 20071107; KR 100752636 B1 20070829; US 2007256824 A1 20071108

DOCDB simple family (application)

EP 07250620 A 20070215; CN 200710086377 A 20070315; KR 20060039725 A 20060502; US 71098207 A 20070227