Patent ID: 8962053
Filing Date: 2015-02-24
Classification: A47J

Abstract:
1. A method for preparing beverages by a device providing a steam source, comprising a first duct downstream of said steam source and directly connected to the steam source, said first duct having a first valve along the first duct, a second duct downstream of said steam source and directly connected to the steam source, said second duct having a second valve along the second duct and a Venturi assembly downstream of said second valve and along the second duct, whereby said Venturi assembly is upstream and downstream connected to the second duct, said Venturi assembly being comprised of a duct length, said duct length (i) having a first end directly connected downstream of a first portion of said second duct and a second end directly connected upstream of a second portion of said second duct, (ii) having a diameter lower than the diameter of the second duct, and (iii) being configured to operate by Venturi effect by communicating with the surrounding environment to introduce air at atmosphere pressure into said duct length, said first and second ducts having substantially the same internal diameter and being connected to a downstream mixing means immersed into a liquid contained into a container, said method comprising the steps of: opening said first and second valves for preparing hot beverages by introducing steam emitted from the downstream mixing means into the liquid contained in the container; and closing said first valve to cause said Venturi assembly downstream of said second valve to operate by Venturi effect to mix into said second duct air with steam from said steam source for preparing hot and frothed beverages by introducing the mixed air and steam into the liquid contained in the container.