Device for dispensing milk and/or milk froth
In a device for dispensing milk and/or milk froth from a container ( 1 ) containing milk, this container is placed in a coolable cabinet ( 3 ). Via an extraction line ( 4 ) and a further line ( 5 ), the milk reaches an emulsifying device ( 6 ) disposed outside the coolable cabinet. The product received is dispensed from this emulsifying device ( 6 ) via the discharge nozzle ( 7 ). Steam is feedable into the emulsifying device ( 6 ) with which steam the milk conducted through the emulsifying device ( 6 ) is able to be heated up and/or frothed up. The further line ( 5 ) consists of a flexible tube which is placed in a peristaltic pump ( 9 ). This peristaltic pump ( 9 ) is equipped with switching means ( 10 ) with which the peristaltic pump ( 9 ) is switchable from a closed pump state into an open pump state releasing the passage of the flexible tube ( 5 ). Milk of different temperatures or milk froth can be optimally dispensed using this device; in addition an optimal cleaning can be carried out. This device is advantageously integrated into a coffee machine, making it possible to obtain automatically different types of coffee with added milk.
1. A device for dispensing milk and/or milk froth from a container comprising a container ( 1 ) adapted to contain milk, a coolable cabinet ( 3 ) enclosing said container, a frame ( 20 ) holding said cabinet, an extraction line ( 4 ) having one end in said container; a further line ( 5 ) connected to the other end of the extraction line ( 4 ) ; an emulsifying device ( 6 ), disposed outside the coolable cabinet ( 3 ) connected to the further line ( 5 ), means to introduce steam to the emulsifying device ( 6 ) so that the emulsifying device ( 6 ) maybe heated to in turn heat and/or froth the milk, said further line ( 5 ) being flexible and being inserted in a peristaltic pump ( 9 ) equipped with switching means ( 10 ) to switch said pump from a closed pump state to an open pump state, said peristaltic pump ( 9 ) being disposed within said coolable cabinet ( 3 ) and drivable via a drive motor wherein a direction of rotation of the peristaltic pump ( 9 ) is reversible after the milk is dispensed to pump the milk located in the further line ( 5 ) back into the container ( 1 ).
2. The device according to claim 1 or, wherein the switching means ( 10 ) is made up of a piston cylinder unit ( 11 ), a piston rod of which is connected to a curved part ( 12 ) bordering a squeeze space.
3. The device according to claim 2 , wherein the piston ( 15 ) of the piston cylinder unit ( 10 ) is impinged by pressurized water, the pressurization is controllable via a valve ( 13 ), and the return water is dischargeable as waste water.
4. The device according to claim 1 , wherein means of determining the weight of the container ( 1 ) are disposed in the region of a floor ( 19 ) of the coolable cabinet ( 3 ) on which the container ( 1 ) is placeable.
5. The device according to claim 1 , wherein the container ( 1 ) for the milk is removable from the coolable cabinet ( 3 ), so that another container with cleaning agents may be put in its place, and so that the cleaning agents are conveyable by means of the peristaltic pump ( 9 ) through the extraction line ( 4 ), the line ( 5 ) and the emulsifying device ( 6 ), and the container may be filled with rinse water for rinsing after the cleaning procedure, which rinse water is also conveyable through the extraction line ( 4 ), the further line ( 5 ) and the emulsifying device ( 6 ).
6. The device according to claim 1 , wherein the further line ( 5 ) is made of silicon or the like.
7. A coffee machine, in particular espresso machine, with at least one container ( 27 ) for coffee beans, a grinding device, a brewing device and a coffee discharge nozzle ( 28 ) and with a device for dispensing milk and/or milk froth according to claim 1 , wherein the device for dispensing milk and/or milk froth is attached to the coffee machine ( 26 ) as a module ( 29 ), and the coffee machine ( 26 ) is able to be extended or upgraded through further modules ( 30 ).
8. The coffee machine according to claim 7 , wherein a dispensing cup is placed between brewing device and coffee discharge nozzle ( 28 ) into which the discharge nozzle ( 7 ) of the emulsifying device ( 6 ) also empties, and the dispensing of coffee, milk and/or milk froth takes place through the coffee discharge nozzle ( 28 ).
9. The coffee machine according to claim 7 , wherein a piston cylinder unit ( 11 ) of the switching means ( 10 ) is controllable by means of the coffee machine ( 26 ) water which is under pressure.