| (19) |
 |
|
(11) |
EP 0 414 433 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
08.05.1991 Bulletin 1991/19 |
| (43) |
Date of publication A2: |
|
27.02.1991 Bulletin 1991/09 |
| (22) |
Date of filing: 14.08.1990 |
|
|
| (84) |
Designated Contracting States: |
|
AT DE FR GB IT SE |
| (30) |
Priority: |
23.08.1989 JP 217959/89
|
| (60) |
Divisional application: |
|
94117701.6 / 0643278 |
| (71) |
Applicant: SHOWA ALUMINUM KABUSHIKI KAISHA |
|
Sakaishi
Osaka (JP) |
|
| (72) |
Inventors: |
|
- Sasaki, Hironaka
Sakaishi,
Osaka (JP)
- Watanabe, Hirohiki
Sakaishi,
Osaka (JP)
- Tategami, Tetsuya
Sakaishi,
Osaka (JP)
|
| (74) |
Representative: Thomson, Paul Anthony et al |
|
Potts, Kerr & Co.
15, Hamilton Square
Birkenhead
Merseyside L41 6BR
Birkenhead
Merseyside L41 6BR (GB) |
|
| |
|
| (54) |
Duplex heat exchanger |
(57) A duplex heat exchanger comprises unit heat exchangers (A, B) which have a plurality
of tubes (1, 21) arranged parallel with each other and comprise fins (2, 22) each
interposed between two adjacent ones of such tubes, opposite ends of each tube being
connected to a pair of headers (3, 4 and 23, 24) in fluid connection therewith. The
unit heat exchangers are closely juxtaposed to each other fore and aft in a direction
of air flow. Coolant circuits of the unit heat exchangers are connected either in
series or in parallel with each other.