EP 1031801 A3 20011205 - Heat exchanger
Title (en)
Heat exchanger
Title (de)
Wärmetauscher
Title (fr)
Echangeur de chaleur
Publication
Application
Priority
JP 4923399 A 19990226
Abstract (en)
[origin: EP1031801A2] 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
IPC 8 full level
F25B 39/00 (2006.01); F25B 39/04 (2006.01); F28D 1/047 (2006.01); F28F 1/32 (2006.01); F28F 9/26 (2006.01); F25B 9/00 (2006.01)
CPC (source: EP)
F25B 39/00 (2013.01); F28D 1/0477 (2013.01); F28F 9/26 (2013.01); F25B 9/006 (2013.01)
Citation (search report)
- [X] US 4831844 A 19890523 - KADLE DURGAPRASAD S [US]
- [X] US 5219023 A 19930615 - KADLE PRASAD S [US]
- [XY] US 5542271 A 19960806 - KUDOH MITUO [JP], et al
- [Y] US 5685163 A 19971111 - FUJITA MAKOTO [JP], et al
- [A] US 4344482 A 19820817 - DIETZSCH KURT
- [A] US 5660056 A 19970826 - ARAI YASUHIRO [JP], et al
- [A] US 5810074 A 19980922 - HANCOCK STEPHEN S [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 061 (M - 1081) 13 February 1991 (1991-02-13)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1031801 A2 20000830; EP 1031801 A3 20011205; CN 1265463 A 20000906; JP 2000249479 A 20000914
DOCDB simple family (application)
EP 00103971 A 20000225; CN 00103626 A 20000225; JP 4923399 A 19990226