A machine for the production and dispensing of chilled food products comprises a tank containing an evaporator which forms part of a refrigerating circuit of the machine and a motorized mixer which rotates coaxially with the evaporator, with evaporator and mixer which project inside the tank through a rear sealed opening thereof, the tank being moreover provided at the front with a tap for dispensing the product through a dispensing outlet arranged above a dispensing zone intended to house a container for receiving the product. A shell of the opening type is arranged so as to enclose at least partially the tank and form a covering for at least partial thermal insulation of the tank from the external environment.