Abstract: A heating and emulsifying device (10), particularly for heating and optionally emulsifying air and milk in milk-based products and having the capability to regulate the air-flow and the milk-flow jointly and proportionally, comprises an emulsification chamber (12) having an opening (14) for the delivery of the product and a steam-inlet duct (20) which opens into the emulsification chamber (12). A milk-inlet duct (28) and an air-inlet duct (30) communicate with the steam inlet duct (20), the air and the milk being drawn in by the partial vacuum created by the flow of steam. An air-flow regulator (38) and a milk-flow regulator (40) are operatively associated with the air-inlet duct (30) and with the milk-inlet duct (28), respectively, the air-flow and milk-flow regulators being structurally connected and being suitable for varying the respective flow-rates in proportion with one another and the emulsion/milk ratio in the final product, without affecting its temperature.

Abstract: A device for heating and emulsifying liquids, in particular drinks, which is unusually capable of generating a dense and creamy foam, comprises a steam-emitting member with which a hollow body can be associated. The steam-emitting member comprises a spout positioned along the hollow body at a height such as to be above the level of the liquid to be emulsified. Inserted coaxially inside the hollow body is a duct which defines a first passage and a second passage. A region for communication between the first passage, the second passage and a third passage for air, which is placed in communication with a groove formed in the inner surface of the hollow body, is provided between the steam-emitting member and the duct. The steam-emitting member comprises two annular projections provided with sectors which have different transverse dimensions and which are offset relative to one another and define a labyrinthine path.