A machine for the production of liquid, semi-liquid or pasty solid food products is described. The machine includes a working container provided with an internal stirrer and externally with heat exchange means, an inlet opening in fluid communication with means for feeding a base food mixture into the container, a first outlet opening for a finished food product and a second outlet opening or a washing liquid. The machine further includes an automatic device for washing the feeding means and the container, and the automatic device has a circuit and a pump for recirculating the washing liquid and means for heating the recirculated washing liquid. A method for cleaning a machine of the aforementioned type is also described.

Systems and methods have demonstrated the capability of rapidly cooling the contents of pods containing the ingredients for food and drinks. Some machines include a refrigeration system to cool food or drink in a pod. Some machines include an evaporator of the refrigeration system, the evaporator including an inlet port to receive refrigerant and an outlet port to discharge refrigerant. Some machines include a processor controlling the refrigeration system. In some examples, the refrigeration system is operable to apply a freezing cycle to the food or drink in which refrigerant flows through the evaporator exchanging heat from ingredients in the pod to the refrigerant causing a temperature difference between an evaporator inlet temperature and an evaporator outlet temperature.

A machine for making and dispensing liquid or semi-liquid food products, includes, in combination: a container for containing liquid or semi-liquid products; a thermal treatment cylinder contained inside the container and having an axis that is inclined relative to the vertical; a stirrer mounted to the outside of the thermal treatment cylinder; a thermal system including a heat exchanger associated with the thermal treatment cylinder, wherein the container for containing liquid or semi-liquid products is defined by a first, inside wall and a second, outside wall, the first, inside wall and the second, outside wall forming between them a gap that is not affected by the liquid or semi-liquid products.

A machine for making liquid or semi-liquid food products includes a processing chamber; a frame defining an opening to the chamber; a stirrer mounted inside the chamber; a cooling system including a heat exchanger associated with the chamber; a closing device connected to the frame and movable between a closed configuration occlude the opening, and an open configuration allowing access to the chamber through the opening. The closing device includes a door hinged to the frame. A retaining device acts on the closing device to maintain the closed configuration. The retaining device includes a rotary element, connected to one between the door and the frame and a stop provided on the other. The rotary element is rotatable between a retaining configuration, engaging the stop to stop the opening of the door, and a disengaged configuration, disengaged from the stop to allow opening of the door.

A machine for liquid or semi-liquid food products, including: a container for containing a liquid or semi-liquid food product; a thermal treatment system, equipped with at least one heat exchanger associated with the container for absorbing or releasing heat to the liquid or semi-liquid food product inside the container; a stirrer positioned inside the container; a dispensing device, including: a supporting element having a front wall; an outlet channel, formed in the supporting element and in fluid communication with the container; a shutter which is movable inside the channel between a closed position of the outlet channel and an open position of the outlet channel; a lever having a first end operatively connected to the shutter to allow the movement between the above-mentioned closed position of the outlet channel and the open position of the outlet channel and also having a second end configured for being gripped by a user.

Systems and methods have demonstrated the capability of rapidly cooling the contents of pods containing the ingredients for food and drinks.

A heat exchanger includes a first tube extending along a central axis. The first tube defines a chamber that contains a first medium. A corrugated sheath of the heat exchanger is disposed radially outward from and extends circumferentially about the outer face for transferring heat through the inner tube.

A control method for a viscous semi-liquid frozen or hot food dispenser comprising a stirring means configured to stir the food, a motor (50) configured to drive the stirring means to rotate, a refrigerating means or heating means configured to input cold energy or heat energy into the food, a rotation speed sensor (80) configured to detect a stirring speed, and a temperature sensor (13) configured to detect the food temperature, the control method comprising the steps of: a) refrigerating or heating the food by the refrigerating means or heating means; b) comparing the food temperature detected by the temperature sensor (13) with a target preset value of the food temperature, and determining to continue the refrigeration or heating, or to stop the refrigeration or heating and to keep stopping for a preset time; c) intervening by corresponding adjustment of the target preset value when a data set collected from the rotation speed sensor (80) shows that change trend of the rotation speed meets predefined intervention conditions; and d) returning to step a) for the next cycle. The control method for a viscous semi-liquid food dispenser is capable of controlling viscosity of food accurately and reliably to maintain consistence of the characteristics of the dispensed product and minimize the influence from the environment as much as possible.

An ice cream manufacturing apparatus, an ice cream manufacturing method, and an ice cream drawing method. An apparatus for manufacturing ice cream includes: a dasher positioned in a cylinder and agitating a liquefied original ice cream liquid and air input into the sealed cylinder; a dasher motor rotating the dasher; a motor RPM control means controlling a frequency of the dasher motor; a dasher motor load measuring means measuring a load of the dasher motor; and a controller determining a rotational speed change time of the dasher motor based on the load measured by the dasher motor load measuring means and controlling the motor RPM control means so as to change the frequency of the dasher motor to a predetermined frequency when the change of the rotational speed of the dasher motor is determined.

In a displacement metering pump, comprising a cylinder housing, which has a product inlet and a product outlet and in which a sealed displacement piston can be moved back and forth, wherein the cylinder housing, with a piston rod seal fixedly installed therein for the displacement piston forming a piston rod and with the placement of the product inlet and the product outlet, has no dead space and is self-emptying, i.e. can be flawlessly cleaned with respect to CIP hygiene.