Patent ID: 8196425

Claim:
A dispenser for dispensing a semi frozen product beverage, comprising a refrigeration system including a compressor for compressing refrigerant to a hot gas, condenser, expansion means and an evaporator, said evaporator being in the form of the freeze chamber for forming said semi frozen product beverage, said freeze chamber being contained in a freeze chamber enclosure, an auxiliary sub-cooler, located between the condenser and the expansion means for said freeze chamber, said auxiliary sub-cooler being provided with warm liquid from said condenser, said auxiliary sub-cooler being located below said freeze chamber and within said freeze chamber enclosure, said warm liquid in said auxiliary sub-cooler raising the temperature of said freeze chamber enclosure adjacent said auxiliary sub-cooler, said freeze chamber having a valve for dispensing the semi frozen product beverage therefrom, wherein condensation on the freeze chamber enclosure can be reduced or eliminated and additional cooling provided to the refrigerant before the expansion means.