Patent ID: 7182125

Claim:
A heat exchanger comprising: a first plate; a second plate joined about a periphery thereof to the first plate, the first plate and second plate having substantially planar, spaced apart central portions defining a fluid flow chamber therebetween having an inlet opening, an outlet opening and spaced apart first and second ends; a flow circuiting barrier in the flow chamber extending from substantially the first end of the fluid flow chamber to a barrier termination location that is spaced apart from the second end of the fluid flow chamber, the barrier dividing the fluid chamber into first and second flow regions in flow communication with each other between the barrier termination location and the second end of the fluid flow chamber; a turbulizer having rows of fluid flow augmenting convolutions, the turbulizer located in the first and second flow regions and including portions defining a notch area therebetween, at least part of the notch area being between the barrier termination location and the second end, said notch area providing a turbulizer free area in the fluid chamber between the barrier termination location and the second end.