(19)
(11) EP 0 384 612 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.11.1990 Bulletin 1990/45

(43) Date of publication A2:
29.08.1990 Bulletin 1990/35

(21) Application number: 90301265.6

(22) Date of filing: 01.02.1990
(51) International Patent Classification (IPC)5: F28D 1/03, F28D 9/00
(84) Designated Contracting States:
DE ES FR GB IT SE

(30) Priority: 24.02.1989 CA 592041

(71) Applicant: LONG MANUFACTURING LTD.
Oakville, Ontario L6K 3W5 (CA)

(72) Inventors:
  • So, Allen K.
    Missisauga, Ontario L5B 2ZI (CA)
  • Avery, Nicholas F.
    Oakville, Ontario L61 4B8 (CA)
  • Rowntree, David B.
    Brampton, Ontario L6X 2G3 (CA)

(74) Representative: Spence, Anne et al
FRY HEATH & SPENCE The Old College 53 High Street
Horley Surrey RH6 7BN
Horley Surrey RH6 7BN (GB)


(56) References cited: : 
   
       


    (54) In tank oil cooler


    (57) A heat exchanger and method of, making same is disclosed. The heat exchanger is particularly useful for cooling automotive engine oil or transmission fluid, the exchanger being located inside the radiator or other part of the engine cooling system. The heat exchanger is made from a plurality of stacked plates (24, 26), the plates being arranged into pre-assembled pairs (12), each pair having a turbulizer (38) located therein. The plates have peripheral tabs (40) which are crimped over to form plate pair sub-­assemblies. The plates also have outwardly disposed dimples (36) which are in contact when the sub-assemblies are stacked together to maintain good contact between all heat transfer surfaces while the assembly is completed by brazing.







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