EP4304428A1 - Procédé de nettoyage et/ou de désinfection et/ou de rinçage d'un système de guidage de lait d'une machine à café, et dispositif de nettoyage associé - Google Patents

Procédé de nettoyage et/ou de désinfection et/ou de rinçage d'un système de guidage de lait d'une machine à café, et dispositif de nettoyage associé

Info

Publication number
EP4304428A1
EP4304428A1 EP22706325.2A EP22706325A EP4304428A1 EP 4304428 A1 EP4304428 A1 EP 4304428A1 EP 22706325 A EP22706325 A EP 22706325A EP 4304428 A1 EP4304428 A1 EP 4304428A1
Authority
EP
European Patent Office
Prior art keywords
milk
fluid
outlet
inlet
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22706325.2A
Other languages
German (de)
English (en)
Inventor
Sandro Klepzig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jura Elektroapparate AG
Original Assignee
Jura Elektroapparate AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jura Elektroapparate AG filed Critical Jura Elektroapparate AG
Publication of EP4304428A1 publication Critical patent/EP4304428A1/fr
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/60—Cleaning devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/4485—Nozzles dispensing heated and foamed milk, i.e. milk is sucked from a milk container, heated and foamed inside the device, and subsequently dispensed from the nozzle

Definitions

  • the invention relates to a method for cleaning and/or disinfecting and/or rinsing a milk-carrying system of a coffee machine, with the milk-carrying system having a milk preparation device with a milk outlet, a fluid inlet and an air inlet for frothing milk and a milk inlet for conveying milk from Milk inlet are designed for milk outlet includes.
  • a coffee machine and a method for cleaning the same are known from EP 2363 051 B2.
  • Coffee machines and associated components are known, for example, from EP 1 656 863 A1 or EP 2 277 419 A1.
  • cleaning methods are used which require a complicated switching arrangement and/or complicated switching cycles of valves and pumps and require a large number of other complex components such as Venturi nozzles.
  • the invention further relates to a cleaning device which is suitable for cleaning a milk-carrying system of a coffee machine.
  • Cleaning devices are known in the art and include one or more containers.
  • the object of the invention is to provide an efficient and thorough method for cleaning a milk-carrying system introduce a coffee machine, which can be implemented on a large number of coffee machines and does not require complex conversion work.
  • the invention proposes the features of claim 1.
  • the method comprises a filling step in which a fluid is conveyed through the milk outlet so that a backwater of fluid arises, as a result of which the fluid flows at least partially through the milk inlet so as to flush the milk-carrying system.
  • the fluid is water.
  • the back pressure can be pronounced at the milk outlet in that the outflow quantity of the fluid from the milk outlet is reduced in relation to the influent quantity of the fluid through the fluid inlet.
  • the flow direction of the fluid can be influenced, whereby a partial reversal of the flow direction of the fluid compared to the direction of the gravitational force in an ordinary system can be achieved.
  • the milk-carrying system can comprise a milk preparation device with a milk outlet, a fluid inlet, a milk inlet and an air inlet. Another part that can be counted among the milk-carrying system is a milk supply line, which can connect the milk preparation device to a milk container.
  • the method includes a cleaning step, which conveys a cleaning-active and/or disinfecting substance through the milk outlet in order to clean and/or disinfect the milk-carrying system. It is advantageous if the cleaning step takes place before the filling step.
  • the cleaning-active and/or disinfecting substance can be dissolved in water or, alternatively, already be in the liquid state.
  • the conveying of fluid through the milk maker can be achieved by valves, pumps and venturis.
  • the method includes an expulsion step. It is advantageous if the expulsion step takes place after the filling step.
  • the expelling step includes supplying steam to expel the fluid through the milk inlet and through the milk outlet. It is advantageous if the feeding is intermittent and discontinuous. It is advantageous if the fluid is water. It is advantageous if a back pressure is generated at the milk outlet, as described above. Thus, fluid residues in are expelled in the form of droplets and the milk-carrying system is also dried.
  • the method includes a separation step. It is advantageous if the separation step takes place before the filling step.
  • the separating step comprises separating a milk supply line from a milk container and then connecting the milk supply line to a mixing container so that a fluid connection can be established between the mixing container and the milk inlet.
  • the separation step can be performed manually by a user.
  • the method includes a connection step. It is advantageous if the connection step takes place before the filling step.
  • the connecting step includes connecting the milk outlet to a collecting container, the connection between the collecting container and the milk outlet being fluidically tight. It is advantageous if pressure can be built up at the milk outlet. It is particularly advantageous if the pressure in the collection container can be built up and the collection container is additionally or alternatively closed.
  • the method includes an activation step. It is advantageous if the activation step takes place before the filling step.
  • the activation step includes feeding a fluid into the mixing container and activating the cleaning-active and/or disinfecting substance. It is advantageous if the fluid is water.
  • the fluid can be supplied manually by a user, for example, or the fluid can flow out of an opening in the coffee machine.
  • the active cleaning and/or disinfecting substance can be in the form of solid granules or powder or be in tablet form.
  • the cleaning-active and/or disinfecting substance can also be present in liquid form.
  • the method is carried out automatically at least after the separating step. This has the advantage that the user can occupy himself with something else and the cleaning process is carried out autonomously.
  • the back pressure arises at least partially in that an input mass flow of the fluid through the fluid inlet is limited by an output mass flow of the fluid. It is advantageous if the fluid is water or steam.
  • a compressible air cushion is created in the collection container.
  • the air cushion alone or in conjunction with the back pressure can cause the effect described above.
  • the collection container has a drain opening through which fluid can flow into the mixing container. It is advantageous if the discharge opening is circular and is additionally or alternatively matched to the milk outlet. It is advantageous if the ratio between the diameters of the outlet opening and the milk outlet is at most 1:5. It is particularly advantageous if the ratio is at most 1:10.
  • a liquid level in the collection container is constant after the liquid level has at least reached the level of the drain opening.
  • a dynamic balance can be achieved between the mass flow that flows through the fluid inlet into the milk preparation device and the mass flows that leave the milk preparation device from the milk outlet and the milk inlet.
  • the cleaning device comprises a collection container which can be fluidically tightly connected to a milk outlet of a coffee machine. It is advantageous if a backwater of fluid can form in the milk outlet. It is advantageous if a method of the above-mentioned steps can be carried out with the cleaning device.
  • the collection container has a lid.
  • the collection container has a discharge opening, which is preferably circular and is additionally or alternatively matched to an inlet opening. It is advantageous if the inlet opening is arranged on the cover and can be connected to the milk outlet of a coffee machine, preferably in a fluid-tight manner. It is advantageous if fluid can flow into a mixing container through the drain opening. It is advantageous if the ratio between the diameters of the outlet opening and the milk outlet is 1:5. It is particularly advantageous if the ratio is 1:10.
  • the drain hole can be circular, square or oval. It is advantageous if the drain opening is located in the upper third of the collection container.
  • the drain opening is in the upper quarter of the collection container is arranged.
  • the fluidically tight connection between the milk outlet and the inlet opening on the one hand and between the cover and the collection container on the other hand can be ensured by a sealing element which is arranged on the cover and on the inlet opening.
  • the sealing member may be made of nitrile butadiene rubber, fluorocarbon rubber, perfluoro rubber, or similar materials.
  • the cleaning device has a wall, with a channel being formed in the wall, which has a docking point and an outlet point, the docking point being able to be coupled to a milk supply line. It is advantageous if this channel is cylindrical. It is advantageous if the outlet point has an opening within the or a mixing container. Thus, a fluid can be easily routed from the mixing container to the milk supply line and vice versa.
  • the collecting container has at least one water channel on the outside and additionally or alternatively a sealing element is arranged on the collecting container. It is advantageous if the sealing element consists of plastic or rubber.
  • the mixing container and the collecting container are nested in one another and additionally or alternatively preferably integrally formed and additionally or alternatively that the cover has a closure with which the cover and the collecting container can be closed.
  • the water channel can be formed by a depression or indentation on the cover or by water channel delimiting elements.
  • FIG. 2 shows a perspective view of a milk preparation device
  • Fig. 3 shows a section through the milk preparation device from Fig. 2
  • FIG. 5 shows a cleaning device with a connected milk preparation device during a cleaning, disinfecting or rinsing process
  • Fig. 6 is a vertical section along the longitudinal axis of Fig. 5
  • Fig. 7 is a vertical section along the transverse axis of the cleaning device
  • a coffee machine is described using the example of a fully automatic coffee machine.
  • FIG. 1 shows a milk preparation device 1 in normal operation when enjoying coffee and adding milk froth and/or milk.
  • the milk preparation device 1 is part of the fully automatic coffee machine (not shown here) and is responsible for adding milk to a coffee drink, for example to produce cappuccino or a Viennese melange.
  • the milk preparation device 1 can be adjusted vertically on the fully automatic coffee machine in order to be able to fill cups 20 of different sizes and to prevent foam or milk from splashing out of the cup.
  • the milk preparation device 1 comprises a milk outlet 2, a fluid inlet 3, an air inlet 19 and a milk inlet 4.
  • the cup 20 is positioned below the milk outlet.
  • the air inlet 19 is used to introduce air in order to froth the milk and produce a milk froth in combination with hot steam introduced through the fluid inlet.
  • the milk preparation device 1 is connected to a milk container 6 by a milk supply line 5 , the milk supply line 5 being attached to the milk inlet 4 .
  • the milk supply line 5 is made of rubber or plastic and can be unplugged by the user from both the milk container 6 and the milk inlet 4 .
  • the user selects the type of coffee drink he wants and operates a user interface on the fully automatic coffee machine.
  • a coffee drink ie a mixture of water and coffee
  • the promotion can be ensured, for example, by a switching arrangement of valves and pumps that are located in the fully automatic coffee machine.
  • milk that is in the milk container 6 is conveyed through the milk supply line 5 into the milk preparation device 1 and flows through the milk outlet 2 into the cup 20, where it mixes with the coffee beverage.
  • FIG. 2 shows a perspective view of a milk preparation device 1 which comprises a milk inlet 4 , a milk outlet 2 , a fluid inlet 3 and an air inlet 19 .
  • the milk preparation device 1 can be made of metal or plastic and be made of one part, or consist of several parts which have been connected to one another.
  • 3 shows a section through the milk preparation device 1. Numerous design options are conceivable.
  • the cleaning device 21 consists of a wall 12 which delimits the outside of the cleaning device 21 .
  • the cleaning device 21 also consists of a mixing container 7 and a collection container 8, which represent two separate containers.
  • the mixing container 7 and the collecting container 8 are nested in one another.
  • the collection container 8 has a cover 10 which has an inlet opening 11 .
  • the collection container 8 can be closed with the cover 10 by a closure 18 which is arranged on the cover 10 .
  • a closure 18 which is arranged on the cover 10 .
  • the collection container 8 and the cover 10 can be connected to one another in a fluidically tight manner.
  • the tightness is ensured by a sealing element 17 which is located on the inside of the cover 10 and on the inlet opening 11 .
  • the sealing element 17 creates a seal between the lid 10 and the collecting container 8 on the one hand and between the inlet opening 11 and the milk preparation device 1 on the other hand.
  • the sealing member 17 may be made of nitrile butadiene rubber, fluorocarbon rubber, perfluoro rubber, or similar materials.
  • the lid 10 has a water channel 16 on the outside.
  • the water channel 16 can be formed by an indentation on the lid or by water channel delimiting elements (for example as shown in FIGS. 4 and 5).
  • the water channel 16 allows water that gets on the lid to drain into the mixing container 7.
  • the wall of the collection container 8 has a circular drain opening 9 .
  • the drain opening 9 allows a precisely defined quantity of liquid to flow from the collecting container 8 into the mixing container 7.
  • the drain opening 9 is significantly smaller than the inlet opening 11 of the lid 10.
  • the diameter of the drain opening 9 is a function of the diameter of the inlet opening 11. beneficial the ratio is at most 1:5, particularly advantageously the ratio is at most 1:10. It is advantageous if the drain opening 9 is arranged in the upper third of the collecting container 8 , it is particularly advantageous if the drain opening 9 is arranged in the upper quarter of the collecting container 8 .
  • the wall 12 has a cylindrical channel 13 which has a docking point 14 and an outlet point 15 .
  • the docking point 14 can be connected to a milk supply line 5 .
  • the outlet point 15 has an opening inside the mixing container
  • the cleaning device 21 is advantageously made of plastic.
  • Fig. 5 shows a cleaning device 21 with attached milk preparation device during a cleaning, disinfecting or rinsing process, according to this invention.
  • the cup 20 After normal operation (shown in Fig. 1) the cup 20 has been removed and a cleaning device 21 placed under the milk maker 1. Due to the vertical adjustability of the milk preparation device 1, the milk outlet 2 and the inlet opening 11 of the cleaning device are fluidically tightly connected.
  • the milk supply line 5 was unplugged from the milk container 6 and attached to the docking point 14 of the channel 13 of the cleaning device 21 .
  • the milk supply line 5 is connected to the milk inlet 4 of the milk preparation device 1 and the docking point 14 of the channel 13 .
  • a cleaning-active and/or disinfecting substance which can be in the form of a powder in a solid aggregate state or in a liquid aggregate state, is placed in the mixing container 7 by the user.
  • the cleaning process is initialized by the user by making an entry on the fully automatic coffee machine.
  • This opening can be arranged directly above the mixing container 8 or above the collecting container 8 . If the opening is arranged above the collection container 8, the water falls onto the cover 10 and is guided into the mixing container 7 via the water channel 16, which is arranged on the cover 10.
  • the water mixes with the active cleaning and/or disinfecting substance and fills the mixing container 7 to a certain extent.
  • the supply of water is stopped.
  • the mixture of water and the active cleaning and/or disinfecting substance is sucked in through the outlet point 15 of the channel 13 and flows through the milk supply line 5 into the milk preparation device 1, and then into the collecting container 8. This causes the milk supply line 5 and the Milk preparation device 1 cleaned and disinfected.
  • On the collection container 8 is continuously filled with the mixture.
  • the height of the discharge opening 9 has not yet been reached. After the height of the discharge opening 9 has been reached and exceeded, the filling process with the mixture is terminated.
  • water is fed through the fluid inlet 3 into the milk preparation device 1 .
  • the fluidic tight connection of the system creates a backwater of water.
  • a dynamic balance is created between the mass flows that flow out of the milk inlet 4 , out of the milk outlet 2 and out of the outlet opening 9 .
  • the liquid level in the collection container 8 levels off between the drain opening 9 and the cover 10 and is approximately constant during this step.
  • a compressible air cushion is created between the liquid level and the milk inlet 2.
  • the back pressure occurs due to the fluidically tight connection and the flow direction of the water can thus be influenced.
  • the water would flow in the direction of gravity, in this embodiment of the invention a partial reversal takes place and part of the water can thus flow out of the milk inlet 4. This rinsing process is then ended.
  • next step steam is fed, preferably intermittently, through the fluid inlet 3 into the milk preparation device 1, with part of the steam then flowing out of the milk preparation device 1 through the milk outlet 2 and part of the steam through the milk inlet 4, thus expelling any remaining droplets of fluid can and at the same time the milk preparation device 1 and the milk supply line 5 dries.
  • the liquid level in the collecting container 8 drops below the height of the drain opening 9 since liquid can flow from the collecting container 8 into the mixing container 7 .
  • the milk preparation device 1 is pushed up vertically, with the fluidically tight connection between the milk outlet 2 and the inlet opening 11 on the lid 10 is separated.
  • the milk supply line 5 is disconnected at the docking point 14 and then reconnected to a milk container 6 .
  • the cleaning device 21 can then be emptied into a sink and cleaned there or in a dishwasher.
  • Fig. 6 shows a vertical section along the longitudinal axis of Fig. 5.
  • the sealing element 17 is along the inside of the
  • Lid 10 and arranged at the inlet opening 11. It creates a seal between the collection container 8 and the lid 10 and between the inlet opening 11 and the milk outlet 2.
  • Fig. 7 shows a vertical section along the transverse axis of the cleaning device 21.
  • Milk inlet flows in order to flush the milk-carrying system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

L'invention concerne un procédé et un dispositif de nettoyage pour le nettoyage, la désinfection et le rinçage d'un système de guidage de lait d'une machine à café pour produire des boissons à base de café mélangées, un flux de retour de fluide étant généré au niveau de la sortie de lait de sorte que le fluide s'écoule au moins en partie à travers l'entrée de lait afin de rincer le système de guidage de lait.
EP22706325.2A 2021-04-12 2022-02-17 Procédé de nettoyage et/ou de désinfection et/ou de rinçage d'un système de guidage de lait d'une machine à café, et dispositif de nettoyage associé Pending EP4304428A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21167852 2021-04-12
PCT/EP2022/054017 WO2022218587A1 (fr) 2021-04-12 2022-02-17 Procédé de nettoyage et/ou de désinfection et/ou de rinçage d'un système de guidage de lait d'une machine à café, et dispositif de nettoyage associé

Publications (1)

Publication Number Publication Date
EP4304428A1 true EP4304428A1 (fr) 2024-01-17

Family

ID=75477938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22706325.2A Pending EP4304428A1 (fr) 2021-04-12 2022-02-17 Procédé de nettoyage et/ou de désinfection et/ou de rinçage d'un système de guidage de lait d'une machine à café, et dispositif de nettoyage associé

Country Status (3)

Country Link
EP (1) EP4304428A1 (fr)
CN (1) CN116981383A (fr)
WO (1) WO2022218587A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE499866T1 (de) 2004-11-11 2011-03-15 Nestec Sa Selbstreinigender mischkopf für milchgetränke und maschinen mit einem solchen mischkopf
DE102009034234B4 (de) 2009-07-23 2013-06-13 Wmf Württembergische Metallwarenfabrik Ag Getränkeautomat
DE102010010516A1 (de) 2010-03-05 2011-09-08 Kaffee Partner Service Gmbh Kaffeemaschine und Verfahren zur Reinigung derselben
EP3415053B1 (fr) * 2017-06-12 2019-11-27 Eugster/Frismag AG Dispositif de préparation de boissons et procédé de nettoyage
EP3593679A1 (fr) * 2018-07-11 2020-01-15 Delica AG Sortie, dispositif de préparation des boissons et procédé de nettoyage d'une sortie d'un dispositif de préparation des boissons

Also Published As

Publication number Publication date
CN116981383A (zh) 2023-10-31
WO2022218587A1 (fr) 2022-10-20

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