Filling unit for filling containers of two different types with a liquid substance, in particular with a beverage

A filling unit (1) for filling containers with a liquid substance (99), comprising:

• a housing (2) configured to receive a mouth of a container to be filled;
• a dispenser (3) that opens onto said housing (2) and, in use, faces towards the mouth of the container so as to dispense, through a dispensing opening (30), the liquid substance (99) towards an internal volume of the container;
• a feed duct (13) for feeding the liquid substance (99) to the dispenser (3);
• a valve (4) interposed between the feed duct (13) and the dispensing opening (30), the valve (4) being controllable to assume an open position and a closed position, thus allowing and preventing the liquid substance (99) to be dispensed from the dispenser (3);
• the filling unit (1) being configured to fill containers (90) of a first type and to fill containers (95) of a second type,
• the housing (2) being configured to receive the mouth (91) of a container (90) of the first type and, alternatively, the mouth (96) of a container (95) of the second type,
• wherein the filling unit (1) further comprises:
• a level sensor (51) for detecting a filled level of the liquid substance (99) in the internal volume of the container;
• a volume meter (52) for measuring a volume of the liquid substance (99) fed to the dispenser (3);
• a control system for controlling the valve (4), the control system being operationally connected to the level sensor (51) and to the volume meter (52);
• wherein the control system is configured to control the valve (4) based on the filled level detected by the level sensor (51), when the filling unit (1) is used for filling a container (90) of the first type, and is configured to control the valve (4) based on the fed volume that is measured by the volume meter (52), when the filling unit (1) is used for filling a container (95) of the second type.