Global Patent Index - EP 1031801 A2

EP 1031801 A2 2000-08-30 - Heat exchanger

Title (en)

Heat exchanger

Title (de)

Wärmetauscher

Title (fr)

Echangeur de chaleur

Publication

EP 1031801 A2 (EN)

Application

EP 00103971 A

Priority

JP 4923399 A

Abstract (en)

The present invention provides a heat exchanger capable of improving heat exchange efficiency. The heat exchanger, in which a plurality of flat plate-shaped fins 1a are stacked at predetermined intervals, heat exchanger tubes 2 for passing refrigerant therethrough are inserted in a stacking direction, air is caused to pass through between each fin group 1, and the heat exchanger tubes 2 are disposed in a plurality of rows in an air passage direction A, is characterized in that: the heat exchanger tube 2 is partitioned into a portion for containing gas and a high proportion of gaseous phase of a gas-liquid two-layer flow of the refrigerant flowing in said tube, and a portion for containing liquid and a high proportion of liquid phase of the gas-liquid two-layer flow of the refrigerant; first heat exchanger tubes 2a and 2b of a 2-pass structure are disposed as the former portion, and a second heat exchanger tube 2c of a 1-pass structure is disposed as the latter portion; these first and second heat exchanger tubes 2a, 2b and 2c are communicated to each other through a coupling member 3; each pass of these first and second heat exchanger tubes 2a, 2b and 2c has, when the heat exchanger is operated as a condenser, an inlet in a leeward-side row and an outlet in a windward-side row; and at least part of the passes are of a counterflow type, being overlapped between a plurality of rows in the air passage direction. <IMAGE>

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

F25B 39/00; F28D 1/047; F28F 9/26

IPC 8 full level (invention and additional information)

F28F 1/32 (2006.01); F25B 39/00 (2006.01); F25B 39/04 (2006.01); F28D 1/047 (2006.01); F28F 9/26 (2006.01); F25B 9/00 (2006.01)

CPC (invention and additional information)

F28F 9/26 (2013.01); F25B 39/00 (2013.01); F28D 1/0477 (2013.01); F25B 9/006 (2013.01)

Designated contracting state (EPC)

DE ES GR IT SE

EPO simple patent family

EP 1031801 A2 20000830; EP 1031801 A3 20011205; CN 1265463 A 20000906; JP 2000249479 A 20000914

INPADOC legal status


2006-05-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20051005

2004-06-09 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031209

2002-08-28 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE ES GR IT SE

2002-03-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020117

2001-12-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-12-05 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2000-08-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE ES GR IT SE

2000-08-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-08-30 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI