Device for heating milk and coffee machine comprising same

A device for heating milk that comprises a body (2) including:

• a steam injection hose (10) that empties into an intake chamber (3) and is designed to be connected to a steam source;
• a hose for milk (15) that is linked to the intake chamber (3) and designed to be connected to a container that contains milk;
• a heating chamber (4) that extends from an outlet (5) of the intake chamber (3) to an output orifice (7) by which the heated milk can flow outside of said body (2), the heating chamber (4) comprising an internal hose (40) that is helical in shape overall, the body (2) extending along a central axis (z), and the hose (40) of the heating chamber (4) has a shape of a regular helix that extends along the central axis (z) over at least two turns;
• and
• an upper end (2a) into which the steam injection hose (10) empties, and a lower end (2b) into which the output orifice (7) empties, whereby said body (2) has an upper portion in which the intake chamber (3) is arranged, and a lower portion in which the heating chamber (4) is arranged, the lower portion of the body (2) having an inside wall (2c) that is cylindrical overall and wherein the hose (40) of the heating chamber (4) is delimited by the inside wall (2c) of the body, whereby a central piece (41) and a helical wing (42) extend between said inside wall (2c) and said piece (41) and are linked to the output orifice (7),
• wherein the piece (41) has an enlarged end (49) that forms the lower end (2b) of the body (2) and wherein the output orifice (7) is arranged coaxially to the central axis (Z).

A device for heating milk that comprises a body including:

• a steam injection hose that empties into an intake chamber and is designed to be connected to a steam source;
• a hose for milk that is linked to the intake chamber and designed to be connected to a container that contains milk;
• a heating chamber that extends from an outlet of the intake chamber to an output orifice by which the heated milk can flow outside of said body, wherein the heating chamber comprises an internal hose that is helical in shape overall, the body extends along a central axis, and the hose of the heating chamber has a shape of a regular helix that extends along the central axis over at least two turns;
• and
• an upper end into which the steam injection hose empties, and a lower end into which the output orifice empties, whereby said body has an upper portion in which the intake chamber is arranged, and a lower portion in which the heating chamber is arranged, the lower portion of the body having an inside wall that is cylindrical overall and wherein the hose of the heating chamber is delimited by the inside wall of the body, whereby a central piece and a helical wing extend between said inside wall and said piece and are linked to the output orifice,
• wherein the helical wing has a sturdy shoulder that is made of the same material as the piece and a free radial edge that is opposite to said sturdy shoulder and provided with a sealing means.