Title (en)

IMPROVEMENTS IN REFRIGERATOR HEAT EXCHANGERS

Publication

EP 0057091 A3 19821027 (EN)

Application

EP 82300316 A 19820121

Priority

GB 8102122 A 19810123

Abstract (en)

[origin: EP0057091A2] A heat exchange unit mainly for a refrigerator comprises a sheet of metal which has been perforated by punching using a roller having a plurality of teeth which causes material to be displaced to form a rectangular perforation and the displaced material to be bent to one side of the sheet around the perforation. The roller forms a series of lines of perforations 2 between which is left an unperforated strip 3 having indentations 4 to which is spot welded the condenser tubing 5 in the form of a serpentine.

IPC 1-7

F25B 39/04; F28F 1/22

IPC 8 full level

F25B 39/04 (2006.01); F28F 1/22 (2006.01)

CPC (source: EP)

F25B 39/04 (2013.01); F28F 1/22 (2013.01)

Citation (search report)

• [Y] DE 1259911 C
• [YD] GB 1312053 A 19730404 - BION CO LTD ROBERT
• [Y] GB 729671 A 19550511 - STANDARD PRESSED STEEL CO
• [A] US 3665745 A 19720530 - BION WALTER R H
• [A] FR 1396436 A 19650423 - RUBANOX SOC
• [A] FR 2094055 A1 19720204 - BENTELER WERKE AG [DE]
• [A] GB 1300069 A 19721220 - CHAUSSON USINES SA [FR]
• [A] US 3773455 A 19731120 - WARP H
• [A] GB 1006039 A 19650929 - REIERT ALUMINIUM METALL
• [A] FR 1380673 A 19641204 - RUBANOX SOC
• [A] DE 2143886 A1 19721019 - CONTARDO GMBH

Designated contracting state (EPC)

DE FR IT NL SE

DOCDB simple family (publication)

EP 0057091 A2 19820804; EP 0057091 A3 19821027; ES 271039 U 19830901; ES 271039 Y 19840316

DOCDB simple family (application)

EP 82300316 A 19820121; ES 271039 U 19820123