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Milk frothing method and milk frothing device for implementing the method

A technology of steam flow, Venturi tubes, applied in the direction of beverage preparation devices, applications, household appliances, etc., which can solve the problems of pollution, device functionality and sanitation loss

Active Publication Date: 2012-07-25
ELEKTRA SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device therefore involves contamination of the Venturi-sized orifice and the gun bore, leading to a loss of functionality and sanitation of the device
Moreover, it also has the same drawbacks described in US 2009 / 0047402

Method used

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  • Milk frothing method and milk frothing device for implementing the method
  • Milk frothing method and milk frothing device for implementing the method
  • Milk frothing method and milk frothing device for implementing the method

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] As can be seen from the figure, the milk frothing device according to the invention comprises a gun 2 applied to a conventional coffee machine, which gun has been provided with a steam generating boiler 4 .

[0017] The gun 2 is hinged to the coffee machine structure so that it can be turned from an operating position (with its lower end facing the shelf on which the jug 8 containing the milk to be frothed rests) to a forwardly extended position so that the gun Can be inserted into and extracted from the jug.

[0018] The gun is held elastically in its operative state by a spring 10 which is preferably associated with an articulation joint 12 by which the gun 2 is hinged to the coffee machine structure.

[0019] The gun 2 incorporates a small venturi 14 of the convergent-divergent type, the upstream side of which is connected to the steam generating boiler 4 via a normally closed (NC) solenoid valve 16 which The control unit controls the operating cycle of the milk fro...

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PUM

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Abstract

A milk frothing method, by subjecting the milk to a step of merely heating by a flow of steam which emerges from a lance (2) immersed in the milk and raises it to a predetermined temperature less than the final temperature of the frothed milk to be obtained, then subjecting the already partly heated milk to a heating and frothing step by a flow of steam and air which is drawn in through a venturi tube (14) by the same steam flow, characterized by preceding the merely heating step by a cleaning and moisture eliminating step, in which said venturi tube (14) is traversed by a flow of steam and of air entrained by said steam and by controlling the steam flow by a normally closed solenoid valve (16) and the air flow by a normally open solenoid valve (22).

Description

technical field [0001] The invention relates to a milk frothing method and a milk frothing device for carrying out the method. Background technique [0002] Milk frothing devices generally comprise a lance provided with two ducts for supplying a flow of steam and a flow of suction or compressed air and a closing system for both flows. During operation, the gun is inserted into the container containing the milk to be frothed so that a stream of steam heats the milk and a stream of drawn or compressed air froths the milk so that the milk binds air particles and forms a soft, creamy foam. [0003] WO 2004 / 089173 describes a milk frothing device in which the compressed air line connected to the gun is provided with a three-way valve which selectively connects it to a steam generating source or to the atmosphere. [0004] US 6099878 describes another milk frothing device with two cold milk supply lines and two air supply lines upstream of two pumps which supply cold milk under p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J31/44
CPCA47J31/4489
Inventor A·弗雷戈南
Owner ELEKTRA SRL
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