Plate heat exchanger

  • US 5,931,219 A
  • Filed: 03/29/1996
  • Issued: 08/03/1999
  • Est. Priority Date: 03/31/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A plate heat exchanger for cooling intake air for an internal combustion engine with liquid coolant comprising:

  • a plurality of heat exchanger plates stacked one next to the other, each of the exchanger plates having a plate plane and a peripheral edge projecting from the plate plane, the stacked heat exchanger plates being sealingly connected at their edges;

    a plurality of first flow ducts formed between the exchanger plates for transmitting the intake air;

    a plurality of second flow ducts formed between the exchange plates for transmitting the liquid coolant;

    a plurality of first and second fluid communication openings formed in each of the heat exchanger plates, wherein the first flow ducts communicate with each other via the first openings and transmit the intake air therethrough and the second flow ducts communicate with each other via the second openings and transmit the liquid coolant therethrough; and

    at least one connection plate each having communication ports for supplying and discharging the intake air and the liquid coolant,wherein the first openings for the intake air have a substantially larger cross section than the second openings for the liquid coolant,wherein a cross-sectional area of the first flow ducts is substantially larger than a cross-sectional area of the second flow ducts, andwherein the first and second ducts are stacked, successively alternating with two of the first flow ducts followed by one of the second ducts.

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