Abstract: This apparatus is characterized by the fact that it comprises an intermediate tank (21) in a single piece of blown food plastic material, connected directly, by a neck 30, on a sleeve 10 of the receptacle 4 which receives the neck 19 of an inserted container R, this sleeve receiving in addition a union 11 enabling the "liquid" and "air" communication between the container R and the tank 21. The tank 21 comprises a lower supple part 25 received in a cooling tray 28, and an upper more rigid part 26 separated from the previous by a constriction section 24 reducing the thermal bridge between these two parts.