Device for the preparation and distribution of cold products

1. A device for the production and distribution of cold products, in particular for machines for the production of soft ice-cream, comprising a cylindrical chamber ( 12 ) equipped at one end with an inlet mouth ( 13 ) for a liquid food mixture and at an opposite end with an extraction tap ( 14 ) for the distribution of the cold food product, wherein said cylindrical chamber ( 12 ) is externally enveloped by an evaporation chamber ( 15 ) for the cooling of the liquid food mixture and contains in its interior a mixer ( 17 ), characterized in, that said extraction tap ( 14 ) is positioned on a closing flange ( 21 ) of, said cylindrical chamber ( 12 ), wherein said flange ( 21 ) comprises an annular wall ( 22 ), which can be complementarily coupled with a front annular wall ( 31 ) of said evaporation chamber ( 15 ), and a housing ( 25 ) of the opening and closing organs of a nozzle ( 29 ), wherein said annular wall ( 22 ) and said housing ( 25 ) are made of a metallic material and put in thermal contact with each other for the cooling of the extraction tap ( 14 ) wherein said housing ( 25 ) of the opening or closing organs of a nozzle ( 29 ) is a cylindrical housing ( 25 ) for the axial sliding of a piston ( 26 ) of said distribution tap ( 14 ).

2. A device for the production and distribution of cold products, in particular for machines for the production of soft ice-cream, comprising a cylindrical chamber ( 12 ) equipped at one end with an inlet mouth ( 13 ) for a liquid food mixture and at an opposite end with an extraction tap ( 14 ) for the distribution of the cold food product, wherein said cylindrical chamber ( 12 ) is externally by an evaporation ( 15 ) for the cooling of the liquid food mixture and contains in its interior a mixer ( 17 ), characterized in that said extraction tap ( 14 ) is positioned on a closing flange ( 21 ) of said cylindrical chamber ( 12 ), wherein said flange ( 21 ) comprises an annular wall ( 22 ), which can be complementarily coupled with a front annular wall ( 31 ) of said evaporation chamber ( 15 ), and a housing ( 25 ) of the opening and closing organs of a nozzle ( 29 ), wherein said annular wall ( 22 ) and said housing ( 25 ) are made of a metallic material and put in thermal contact with each other for the cooling of the extraction tap ( 14 ) wherein said tap ( 14 ) comprises, on the side opposite to that facing the cylindrical chamber ( 12 ), a coating of plastic material ( 32 ) suitable for thermally insulating the metallic flange ( 21 ) from the outside environment.

3. A device for the production and distribution of cold products, in particular for machines for the production of soft ice-cream, comprising a cylindrical chamber ( 12 ) equipped at one end with an inlet mouth ( 13 ) for a liquid food mixture and at an opposite end with an extraction tap ( 14 ) for the distribution of the cold food product, wherein said cylindrical chamber ( 12 ) is externally enveloped by an evaporation chamber ( 15 ) for the cooling of the liquid food mixture and contains in its interior a mixer ( 17 ), characterized in that said extraction tap ( 14 ) is positioned on a closing flange ( 21 ) of said cylindrical chamber ( 12 ), wherein said flange ( 21 ) comprises an annular wall ( 22 ), which can be complementarily coupled with a front annular wall ( 31 ) of said evaporation chamber ( 15 ), and a housing ( 25 ) of the opening and closing organs of a nozzle ( 29 ), wherein said annular wall ( 22 ) and said housing ( 25 ) are made of a metallic material and put in thermal contact with each other for the cooling of the extraction tap ( 14 ) wherein said piston ( 26 ) comprises, at the lower end, a protruding closing element ( 33 ), complementary to the hole ( 30 ) of said nozzle ( 29 ), and suitable for being inserted in said hole ( 30 ) in a rest position.

4. A device for the production and distribution of cold products, in particular for machines for the production of soft ice-cream, comprising a cylindrical chamber ( 12 ) equipped at one end with an inlet mouth ( 13 ) for a liquid food mixture and at an opposite end with an extraction tap ( 14 ) for the distribution of the cold food product, wherein said cylindrical chamber ( 12 ) is externally enveloped by an evaporation chamber ( 15 ) for the cooling of the liquid food mixture and contains in its interior a mixer ( 17 ), characterized in that said extraction tap ( 14 ) is positioned on a closing flange ( 21 ) of said cylindrical chamber ( 12 ), wherein said flange ( 21 ) comprises an annular wall ( 22 ), which can be complementarily coupled with a front annular wall 31 of said evaporation chamber ( 15 ), and a housing ( 25 ) of the opening and closing organs of a nozzle ( 29 ), wherein said annular wall ( 22 ) and said housing ( 25 ) are made of a metallic material and put in thermal contact with each other for the cooling of the extraction tap ( 14 ) wherein said evaporation chamber ( 15 ) is put directly in contact with the wall of said cylindrical chamber ( 12 ) and is externally enveloped by an insulting casing ( 16 ).

5. A device for the production and distribution of cold products, in particular for machines for the production of soft ice-cream, comprising a cylindrical chamber ( 12 ) equipped at one end with an inlet mouth ( 13 ) for a liquid food mixture and at an opposite end with an extraction tap ( 14 ) for the distribution of the cold food product, wherein said cylindrical chamber ( 12 ) is externally enveloped by an evaporation chamber ( 15 ) for the cooling of the liquid food mixture and contains in its interior a mixer ( 17 ), characterized in that said extraction tap ( 14 ) is positioned on a closing flange ( 21 ) of said cylindrical chamber ( 12 ), wherein said flange ( 21 ) comprises an annular wall ( 22 ), which can be complementarily coupled with a front annular wall ( 31 ) of said evaporation chamber ( 15 ), and a housing ( 25 ) of the opening and closing organs of a nozzle ( 29 ), wherein said annular wall ( 22 ) and said housing ( 25 ) are made of a metallic material and put in thermal contact with each other for the cooling of the extraction tap ( 14 ) wherein said mixer ( 17 ) comprises, at one end, an entrainment shaft ( 18 ), equipped with a sealing ring ( 19 ) which forms a rotating seal on the cylindrical, chamber ( 12 ).

6. A device for the production and distribution of cold products, in particular for machines for the production of soft ice-cream, comprising a cylindrical chamber ( 12 ) at one end with an inlet mouth ( 13 ) for a liquid food mixture and at an opposite end with an extraction tap ( 14 ) for the distribution of the cold food product, wherein said cylindrical chamber ( 12 ) is externally enveloped by an evaporation chamber ( 15 ) for the cooling of the liquid food mixture and contains in its interior a mixer ( 17 ), characterized in that said extraction tap ( 14 ) is positioned on a closing flange ( 21 ) of said cylindrical chamber ( 12 ), wherein said flange ( 21 ) comprises an annular wall ( 22 ), which can be complementarily coupled with a front annular wall ( 31 ) of said evaporation chamber ( 15 ), and a housing ( 25 ) of the opening and closing organs of a nozzle ( 29 ), wherein said annular wall ( 22 ) and said housing ( 25 ) are made of a metallic material and put in thermal contact with each other for the cooling of the extraction tap 14 wherein said mixer comprises, at an opposite end, a centering means ( 20 ) on said closing flange ( 21 ) of the cylindrical chamber ( 12 ) suitable for allowing the rotation of the mixer ( 17 ) itself with respect to the flange ( 21 ).