Patent ID: 8631858

Claim:
A heat exchanger comprising: at least one plate having a first channel defined therein having an inlet and an outlet, on a first side of the plate and having a first channel portion extending in a first direction from the inlet, a third channel portion extending along the first channel portion and generally parallel thereto toward the outlet, and a second channel portion providing fluid communication between the first channel portion and the third channel portion, and a second channel, which is linear, defined therein having an inlet, on a first side of the plate, and an outlet, on a second side of the plate, opposite the first side of the plate, wherein the first and second channels are in fluid isolation; an expansion device disposed within the second channel portion and configured to produce a pressure drop across the expansion device and allow fluid flowing there through to expand sufficiently to generate a two-phase flow so that expanded fluid in the third channel portion provides cooling of fluid in the first channel portion; and a cover plate, in fluid communication with the inlet and the outlet of the first channel and the inlet and outlet of the second channel.