초록 ▼

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 stack

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 formed of cladded metal, the plates being assembled into face-to-face pairs, each pair having a turbulizer located therein. The plates also have outwardly disposed dimples which are in contact when the plates are arranged back-to-back. The turbulizer is thicker than the spacing between the assembled plates prior to brazing the assembly. The dimples maintain good contact between all heat transfer surfaces while the assembly is completed by brazing.

대표청구항 ▼

A method of making a heat exchanger comprising: providing a plurality of plates, each plate having a planar central portion, a raised, peripheral edge portion located above and in a plane parallel to the central portion, and opposed end bosses located below and in a plane parallel to the central por

A method of making a heat exchanger comprising: providing a plurality of plates, each plate having a planar central portion, a raised, peripheral edge portion located above and in a plane parallel to the central portion, and opposed end bosses located below and in a plane parallel to the central portion, the end bosses having inlet and outlet openings formed therein; arranging said plates into a face-to-face pair having mating peripheral edge portions and a hollow space therebetween; inserting a turbulizer into said hollow space, the turbulizer being of such thickness that the mating peripheral edge portions are spaced apart; heating the plate pair; compressing the turbulizer by pressing the plate pair together thereby drawing the mating peripheral edge portions together; and joining contacting areas of the plates and turbulizer to form a fluid tight assembly.