Machine for making liquid or semi-liquid products
A machine for making liquid or semi-liquid products, including: a first processing container for processing a basic liquid or semi-liquid product and defining a processing chamber; a cooling cylinder mounted inside the first container; a rotary stirrer mounted inside the first container and outside the cooling cylinder; a thermal treatment system provided with at least a first exchanger associated with the cooling cylinder; a second processing container; a connecting duct designed to connect the second processing container to the first processing container to transfer the basic liquid or semi-liquid product from the second processing container to the first processing container; a dispensing device associated with the first processing container to deliver the liquid or semi-liquid product to the outside.
1. A machine for making liquid or semi-liquid products, comprising:
a first processing container for processing a basic liquid or semi-liquid product and defining a processing chamber;
a cooling cylinder mounted inside the first processing container;
a rotary stirrer mounted inside the first processing container and outside the cooling cylinder;
a thermal treatment system including a first heat exchanger associated with the cooling cylinder;
a second processing container;
a stirrer mounted in the second processing container and configured to stir the basic liquid or semi-liquid product inside the second processing container;
a connecting duct connecting the second processing container to the first processing container to transfer the basic liquid or semi-liquid product from the second processing container to the first processing container;
a dispensing device including an outlet duct connected to the first processing container to deliver the processed liquid or semi-liquid product to an exterior of the machine;
a shutoff valve configured to close the connecting duct between the first processing container and the second processing container;
wherein the shutoff valve includes a further duct including an internal longitudinal through-cavity, the further duct being movable vertically between a closed position where the connecting duct is closed and an open position where the connecting duct is open.
2. The machine according to claim 1 , wherein the first processing container comprises a radially protruding longitudinal portion defining, inside the processing chamber, a zone for recirculating the basic liquid and semi-liquid product when the rotary stirrer is set in rotation.
3. The machine according to claim 2 , wherein the first processing container, in transvers cross section, has a first portion, which is partially circular, and a second portion, connected thereto and projecting outwards, which has an irregular shape matching the radially protruding longitudinal portion.
4. The machine according to claim 1 , wherein the rotary stirrer comprises a van portion and a stiffening rib extending longitudinally and connected to the van portion to stiffen the vane portion.
5. The machine according to claim 1 , wherein the dispensing device comprises a shutter, movably mounted in the outlet duct in order to close the outlet duct to prevent the processed liquid and semi-liquid product from being fed out of the first processing container or to leave the outlet duct open to allow the processed liquid and semi-liquid product to be fed out of the first processing container to the exterior of the machine.
6. The machine according to claim 1 , wherein the first processing container comprises a front portion which is removable to allow cleaning of the first processing container.
7. The machine according to claim 1 , comprising a gasket fitted to a bottom of the further duct and including an internal through-cavity in fluid connection with the internal longitudinal through-cavity of the further duct, the gasket being sized to come into abutment with a bottom of the second processing container when the further duct is in the closed position and to prevent passage of the basic liquid and semi-liquid product from the second processing container to the first processing container.
8. The machine according to claim 1 , wherein the further duct includes an air inlet opening in fluid communication with the internal longitudinal through cavity.
9. The machine according to claim 1 , wherein the further duct includes an air inlet opening in fluid communication with the internal longitudinal through-cavity.