Device and method for generating milk froth
AssigneeFranke Kaffeemaschinen AG
InventorHeinz Vetterli
Life of this patent
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Abstract
A device for generating milk froth, including a pump for conveying milk from a reservoir, an air intake, and at least one back-pressure element, with the back-pressure element being arranged upstream in reference to the pump and the air intake upstream in reference to the back-pressure element. The back-pressure element is embodied as a mixing element, which has in the direction of flow a cross-sectional area that the flow passes through that is not reducing, with the cross-sectional area that the flow passes through at the input side being at least equivalent to the cross-section of the connecting pipeline arranged between the pump and the mixing element. A method for generating milk froth as well as the use of a helical mixer for the generation of milk froth are also provided.
Claims19
A device for generating milk froth, comprising a pump (1, 1a, 1b) for conveying milk from a reservoir, an air inlet, and at least one back-pressure element arranged downstream in reference to the pump, the air inlet is upstream in reference to the back-pressure element, the back-pressure element comprises a mixing element (8, 8′) having a cross-sectional area that a flow passes through which is not constricted along an entire length of the mixing element in a direction of flow, with a cross-sectional area that the flow passes through at an input side being equivalent at least to a cross-sectional area of a connection line arranged between the pump (1, 1a, 1b) and the mixing element (8, 8′).
A device for generating milk froth, comprising a pump (1, 1a, 1b) for conveying milk from a reservoir, an air inlet, and at least one back-pressure element arranged downstream in reference to the pump, the air inlet is upstream in reference to the back-pressure element, the back-pressure element comprises a mixing element (8, 8′) having a cross-sectional area that a flow passes through which is not reducing in a direction of flow, with a cross-sectional area that the flow passes through at an input side being equivalent at least to a cross-sectional area of a connection line arranged between the pump (1, 1a, 1b) and the mixing element (8, 8′), and the mixing element (8, 8′) comprises at least first and second separating elements (13a, 13b) which are embodied cooperating with each other and arranged behind each other in a flow path of a fluid flowing therethrough such that a splitting into two or more partial flows or a mixing of the partial flows of the fluid flowing through occurs.
A device for generating milk froth, comprising
- a pump (1, 1a, 1b) for conveying milk from a reservoir, an air inlet, and at least one back-pressure element arranged downstream in reference to the pump, the air inlet is upstream in reference to the back-pressure element, the back-pressure element comprises a mixing element (8, 8′) having a cross-sectional area that a flow passes through which is not reducing in a direction of flow, with a cross-sectional area that the flow passes through at an input side being equivalent at least to a cross-sectional area of a connection line arranged between the pump (1, 1a, 1b) and the mixing element (8, 8′), two parallel flow path sections (7a, 7b) for the optional generation of warm or cold milk froth, and a continuous-flow heater (9) being arranged in a first of the flow path sections (7a).
A method for generating milk froth, comprising the following processing steps:
- a) conveying milk from a reservoir via a pump (1, 1a, 1b),
- b) supplying air to the milk, and
- c) guiding the milk mixed with air or the milk froth or both through a back-pressure element at a pressure side of the pump (1, 1a, 1b), the back-pressure element comprising a mixing element (8, 8′) having a cross-sectional area that the flow passes through that is not constricted along an entire length of the mixing element in a direction of flow, which at an input side is at least equivalent to a cross-section of a connection line arranged between the pump (1, 1a, 1b) and the mixing element (8, 8′).
Dependencies are inferred from the claim text.