Global Patent Index - EP 1486748 A1

EP 1486748 A1 2004-12-15 - HEAT EXCHANGER, HEAT EXCHANGER MANUFACTURING METHOD, AND AIR CONDITIONER

Title (en)

HEAT EXCHANGER, HEAT EXCHANGER MANUFACTURING METHOD, AND AIR CONDITIONER

Title (de)

WÄRMETAUSCHER, WÄRMETAUSCHERHERSTELLUNGSVERFAHREN UND KLIMAANLAGE

Title (fr)

ÉCHANGEUR DE CHALEUR, PROCÉDÉ DE FABRICATION ET CLIMATISEUR

Publication

EP 1486748 A1 (EN)

Application

EP 03703315 A

Priority

  • JP 0301396 W
  • JP 2002042860 A

Abstract (en)

The object of the present invention is to provide a plate fin heat exchanger that achieves better heat transfer efficiency by both making the diameter of the heat transfer tubes on the liquid side of the heat exchanger smaller than the diameter of the heat transfer tubes on the gaseous side and curbing the decline in the heat transfer rate at the outside of the heat transfer tubes that results from deviating from the optimum dimensional ratio between the tube diameter and the fin width. It is also the object of the present invention to provide a manufacturing that is well-suited to such a heat exchanger. The heat exchanger (1) is provided with a plurality of plate fins (2) that are arranged with a prescribed spacing there-between in the thickness direction thereof and a plurality of heat transfer tubes (3) that are installed in such a manner as to pass through the plate fins (2) in said thickness direction of the plate fins (2). As shown in Figures 4 and 5, the plate fins (2) are shaped such that the width thereof decreases from a fin width W1 to a fin width W2 in a continuous manner as one moves from one end to the other. The heat transfer tubes (3) are provided in at least two different diameter sizes, each individual heat transfer tube (3) having only one of said diameter sizes. The larger diameter heat transfer tubes are arranged in the upper portion of the heat exchanger (1) and the smaller diameter heat transfer tubes are arranged in the lower portion of the heat exchanger (1). <IMAGE>

IPC 1-7 (main, further and additional classification)

F28F 1/32; B21D 53/08

IPC 8 full level (invention and additional information)

F24F 1/00 (2011.01); F28D 1/04 (2006.01); F28D 1/047 (2006.01); F28F 1/32 (2006.01); F28F 13/08 (2006.01)

CPC (invention and additional information)

F28D 1/0417 (2013.01); F28D 1/0477 (2013.01); F28F 1/32 (2013.01); F28F 13/08 (2013.01); F28F 2215/00 (2013.01); F28F 2215/04 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

EPO simple patent family

EP 1486748 A1 20041215; EP 1486748 A4 20080625; AU 2003207046 A1 20030909; CN 1633578 A 20050629; JP 2003240472 A 20030827; JP 3979118 B2 20070919; WO 03071216 A1 20030828

INPADOC legal status


2010-01-27 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20090811

2008-06-25 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20080526

2004-12-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20040910

2004-12-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

2004-12-15 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL LT LV MK RO