Patent ID: 8042608

Claim:
A heat exchanger for cooling beverages including: an outer housing; a first means defining a first fluid flow path located in the housing, the first fluid flow path defining a plurality of turns and having an inlet and an outlet for entry and exit of fluid into the flow path to be heated or cooled: a second means defining a second fluid flow path located within the housing adjacent to the first flow path, said second fluid flow path defining a plurality of turns and having inlet and outlet for a passage for hot or cold service media; a sheath disposed between the first and second fluid flow paths; a transfer medium disposed in the housing for transfer of heat between the first and second flow paths, using a flowing transfer medium; a plurality of first baffles located between the outer housing and the sheath and disposed between the turns of the first fluid flow path; and a plurality of second baffles disposed between the turns of the second fluid flow path wherein the first baffles located between the outer housing and the sheath comprise an annulus having an element selected from the group consisting of a discontinuity and a slit extending between an interior and an exterior of the annulus and are a close fit between an interior of the housing and an exterior of the sheath and wherein the second baffles located inside the sheath are circular plates having a radial slit extending from a circumference of the circular plate substantially to its centre and are a close fit to an interior of the sheath.