A machine for making and dispensing frozen food products such as crushed-ice drinks, sorbets and the like comprises a tank (3) for containing and processing the product to be dispensed, a dispensing tap (4) located close to the bottom of the tank (3), a motor-driven mixer element (11) and an evaporator (12) of a refrigerating circuit, the latter two items being housed inside the tank (3) the tank (3) has a lower chamber (5) and an upper chamber (7) which are separated from each other by a bottom wall (19) of the upper chamber (7) the lower chamber (5) houses the mixer element (11) and the evaporator (12), whilst the upper chamber (7) forms a well communicating with the lower chamber (5) so as to feed the latter the substantially cylindrical lower chamber (5) is delimited by a wall (8) having at least one longitudinal rib (26) extending towards the inside of the lower chamber (5) and located in a position opposite and close to the unit consisting of the mixer element (11) and evaporator (12) assembly.
