• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Procedure and machine to emulsify milk of the kind that have a steam lance in a professional coffee machine that has the means to achieve different technical characteristics of the emulsion depending on consumer tastes through the use of different nozzles and at least one unit control that allows adjusting the parameters of temperature, air flow and steam for an optimal degree of emulsification. It has an automatic internal cleaning system of the steam lance after the emulsion cycle is finished, managed by a control unit that operates the steam coming from the boiler to guarantee the correct asepsis of the assembly, as well as safety elements to avoid the Risk of burns to the user when detecting the position of the lance allowing or preventing the steam from escaping through it. Intended for the industrial sector dedicated to the manufacture of coffee machines. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2782699A1
    申请号:ES201930228
    申请日:2019-03-12
    公开日:2020-09-15
    发明作者:Peiro Juan Antonio Canet；Lara Albano Ivan Garcia
    申请人:Crem Int Spain S L；
    IPC主号:
    专利说明:

    [0002] PROCEDURE AND MACHINE FOR EMULSING MILK
    [0003] BACKGROUND
    [0005] As it is known, milk is an indispensable complement for the preparation of some dues such as coffee, balancing the experience and originality when tasting a cappuccino or a lattemacchiato for example. In professional coffee machines there are different means to achieve emulsification of the milk, on the one hand the emulsion can be carried out manually, in this way a conventional steam lance is introduced into a preferably metallic container and the steam is released while simultaneously performing vertical and pan or tilt movements, this requires some skill to achieve a quality emulsion while taking considerable time. To provide a technical solution without requiring the intervention of an experienced user, machines are known that incorporate a milk container and means to suck it up as a pump or through the Venturi effect using an emulsion chamber where both fluids, steam and milk, are emulsify, this solution can be seen in patent ES1040055U of the applicant Gaggia Española SA Other solutions are built as an accessory located at the end of the steam lance, comprising a suction chamber, an opening in contact with the milk, another open in communication with the atmosphere and a last one for the exit of the emulsion, this innovation is registered by the applicant Moulinex SA in the European patent with application number 0555767 or others that cover a steam lance creating an attachable emulsifier at whose ends the milk is sucked by the Venturi effect as the invention collected in the patent with publication number ES 200202804 of the applicant Sitexpress S.L.
    [0007] Innovations are also known that improve these emulsion chambers by extending the residence time of the milk in them as well as optimizing the circulation and dynamics of the fluids by means of nozzles and steps, as can be seen in the European patent with application number 99969317.9 of the holder Jura Elektroapparate AG.
    [0009] On the other hand, the need for interior cleaning of the steam lance and, where appropriate, the emulsion mixing chamber necessary to guarantee the hygienic conditions of the assembly is known, tending the technical proposals to improve the disassembly conditions of the assemblies as well as to design their geometries avoiding creating spaces that are difficult to access, clearly differing from the one recommended, which also includes means of protection to the user against the risk of burns by steam generated in the automatic cleaning of the emulsion equipment.
    [0011] Therefore, procedures and their corresponding machines are not known as the one disclosed in the present invention.
    [0012] OBJECT
    [0014] Provide coffee machines equipped with a steam lance designed to heat and emulsify milk for the preparation of different beverages, with means to improve the quality of the emulsion in a simple and efficient way without requiring the expertise of an expert professional such as a barista, being able to vary the number and size of the bubble of the emulsion created depending on the time and quality pursued by the user. Guarantee the correct interior cleaning of the steam lance, taking into account whether manual cleaning has been carried out and if this has been sufficient, starting an automatic cleaning if necessary and avoiding the risk of burns towards the user in the automatic cleaning routine using security measures built into the machine.
    [0016] DESCRIPTION
    [0018] The recommended procedure and machine allows to achieve in an automated way an emulsion of the milk of a quality that is only achieved by some professionals and that in the normal work dynamics represents a very valuable time, on the other hand measures are contemplated to guarantee the correct interior cleaning of the steam lance as well as safety for the user, in this way, as stated in its first claim, the emulsion starts after the user operates a toggle switch, emulating the most intuitive experience of the machines. opening of mechanical valves, in this way when we move the described lever to one of its positions to carry out the emulsion, the procedure contemplates a reading of the temperature of the milk by means of a temperature probe that has the steam lance at its end and in contact with it, if the milk temperature is higher than a set value of 12 ° C, it will appear on a visual screen and tactile an indication that the milk should be cooled as a recommendation; When the milk is below this temperature, the procedure will start the emission of steam through the lance, after a time of 2 seconds the air from an adjustable pump is introduced, making the steam / air mixture in a chamber located At the beginning of the lance, after this the temperature of the incipient emulsion is measured and a value prior to the final temperature is considered where the procedure cuts the air supply and not the steam supply, this allows the emulsion not to increase in size and homogenize. The procedure contemplates stopping the steam emission as a safety measure if the toggle switch switch is actuated again to another of its positions or if an actuation time on the emulsion position of around 240 seconds has been exceeded. Once the emulsion is finished, a time counter is started to perform an automatic cleaning, in this time the user can perform an interior cleaning of the steam lance by acting again on the toggle switch to the position chosen for this purpose, in this way the steam valve will open until the lever is placed in a neutral position (not actuated), the procedure checks if the time has been sufficient indicating if not by means of an alert on the visual touch screen that you must proceed again cleaning, if it is not performed or does not exceed the optimal time, the procedure will start an automatic cleaning that to prevent the steam from reaching the user, it will only start when the steam lance is in a vertical position, therefore directed at the spill tray of the coffee machine, this consideration is made by interpreting the signal from a contact microswitch located on the top of the steam lance.
    [0020] The machine recommended to carry out the described procedure has a conventional steam lance through which both the steam from the boiler and the air injection run, these are mixed in a chamber near the start of the lance. steam, the air is supplied by an adjustable pump, it also has a temperature probe for measuring the temperature of the milk that emerges from the lance through at least one interchangeable nozzle, the interchangeable nozzles allow to adjust the quality of the emulsion and the time necessary to make it, in such a way that a single channel nozzle and outlet orifice with a diameter between 1.1mm and 1.4mm and whose channel has an angle with respect to the vertical axis of the lance between 20 ° and 40 ° so that the steam when it comes out does not come into direct contact with the temperature probe and distorts the measurement; On the other hand, when we want to make an emulsion more quickly without reducing the quality too much, the use of another removable nozzle with 8 channels and holes of the same orientation with diameters between 1.1mm and 1.4mm has been foreseen; both nozzles have on the outside with flat faces parallel to each other to facilitate their assembly and disassembly through the cooperation of a fixed wrench.
    [0022] The machine for emulsifying milk has at least one control unit, at least one memory to record the factory values or those entered by the users and a time base to set the temporal reference of the events. It has a visual touch screen for data input and output, as well as an electric lever switch for activating the emulsion and interior cleaning routines of the steam lance started according to the selected position of said switch. It has means to prevent the steam from reaching the user when starting an automatic cleaning by knowing if the steam lance is in a vertical position such as a microswitch located near the top of the lance and whose contact or not determines said position, accordingly. such that only steam will escape in this position, going to the spill tray of the coffee machine.
    [0024] DESCRIPTION OF THE FIGURES
    [0026] Figure 1 illustrates a diagram of the milk emulsion process that begins with the activation of the toggle switch switch to one of its positions in this case indicated as the lower position.
    [0028] Figure 2 shows the manual cleaning procedure initiated by activating the toggle switch to the upper position.
    [0029] Figure 3 illustrates the automatic cleaning procedure.
    [0031] Figure 4 shows an isometric view of a professional coffee maker in which (6) represents the spill collection tray.
    [0033] Figure 5 is an enlargement that illustrates the toggle switch (1) in its neutral position and in a broken line two actuating positions thereof: the upper and lower position. Visual touch screen (2) and the steam lance (3) in both vertical and displaced positions (in dashed lines), the removable outlet nozzle (4) and the temperature sensor (5) can be seen at the end of the lance. .
    [0035] Figures 6 and 7 represent a removable nozzle with a single outlet hole, in its isometric representation one of the flat faces designed to facilitate assembly and disassembly with a flat wrench can be seen.
    [0037] Figures 8 and 9 represent a removable nozzle with 8 outlet ports.
    [0039] Figures 10, 11 and 12 correspond to different milk emulsion samples, all of them on a scale pattern to the right where the perforations correspond to 200 microns, circumferences have been graphically superimposed to facilitate the visualization and interpretation of the samples. Where figure 10 is a sample of emulsion made manually by an inexperienced user, figure 11 shows a sample made according to the procedure and machine described with a nozzle with 8 holes of diameter 1.2mm, similarly figure 12 shows has been made on a sample in which the nozzle has a single hole with a diameter of 1.3mm.
    [0041] Figures 13 and 14 show the count and analysis of the previous samples, comparing the number and size of the bubbles obtained per cm2.
    [0043] MODE OF A PREFERRED EMBODIMENT
    [0045] A preferred embodiment is cited by way of example, the materials used in the manufacture of the milk emulsifying machine, and the application methods and all the accessory details that may be presented in its procedure, as long as they are not independent of the object of the invention. affect its essentiality.
    [0047] A preferred embodiment of the invention is proposed that has a procedure for obtaining a milk emulsion in an automated way, achieving optimum emulsion quality without therefore requiring the skill of a professional and with the advantage of being reproducible again when required, under identical conditions. The milk emulsion is illustrated in the diagram of figure 1 and begins with the activation of the electric lever switch (1) figure 5 to the position selected for this function, which here as an example we can consider as a lever in the lower position , with this a measurement of the temperature of the milk is carried out starting the steam output through the steam lance (3), if the temperature is lower than a value considered optimal, which in this preferred embodiment is estimated as 12 ° C, a recommendation is shown on the visual touch screen (2 ) to cool the milk, the procedure generates a delay in the injection of air of around 2 seconds after the emission of steam, as well as measures the temperature of the milk by cutting the injection of air 14 ° C earlier to the final temperature This cutoff in the air supply, not steam, allows the emulsion to homogenize without continuing to rise.
    [0049] In this embodiment, it is possible to proceed indistinctly with the internal cleaning procedures of the lance, both manual, illustrated in figure 2, and automatic, figure 3, which is described to provide greater clarity: this mode starts after completing the emulsion and starting a time counter that contains a maximum preset value in at least one memory since its last use or if the time of manual cleaning has been insufficient with respect to another value stored from the factory as safe, once the automatic cleaning procedure has started, the procedure checks if the Steam lance is in a vertical position and therefore directed to the spill collection tray (6), thus preventing the steam from reaching the user, otherwise an alarm is generated displayed on a touch screen indicating this event . Automatic cleaning is programmed, defining the steam output time and its stopping time, as well as the necessary cycles.In this embodiment, three cycles are carried out in which each one of them emits a 3-second emission. of steam and 1 second of waiting, this combination achieves an adequate interior cleaning of the steam lance. After cleaning, a notice is displayed indicating that the self-cleaning has been completed successfully.
    [0051] The machine for the procedure of this preferred embodiment has a control unit, at least one memory to store the factory operating parameters as well as those modified by the users, and a time base to set the events. It has input and output means through a touch screen (2), and a toggle switch (1) to start the emulsion or proceed to manual cleaning of the steam lance. It has for the injection of air an adjustable peristaltic pump, at least one temperature probe (5) to measure the temperature of the milk, and at least two interchangeable nozzles, figures 6 and 8. It also has means to prevent the steam from the lance from reaching the user, which could cause burns when the automatic cleaning is performed, these means consist of detecting the position of the lance, for this it has a microswitch located near the top of the lance and whose contact determines this position, preventing its unit and control logic from escaping steam if the described circumstance is not met.
    [0053] The nozzle used in this embodiment has a single orifice with a diameter of 1.3mm, this value allows it to achieve a high quality emulsion (emulsion represented in the figure 12) while cleaning is carried out adequately without its size tending to become clogged as happens in holes below 1.1 mm, the nozzle outlet channel has an inclination with respect to the longitudinal axis of the lance of 30 ° this angle allows the steam not to hit the temperature probe (5) directly, distorting its reading.
    [0055] EXAMPLE OF THE EMULSIONS ACHIEVED
    [0057] To illustrate the effectiveness of the recommended process and machine, three examples of emulsion are shown in which a comparison of the bubble size obtained and its distribution can be seen. All of them have been made under the same conditions of milk temperature and characteristics, specifically a standard whole milk with a fat content of 3.6g (saturated 2.4g), 4.6 g of sugar, 0g of salt and a content of of proteins of 3.1g.
    [0059] To more clearly visualize the macrophotographs, a calibrated mesh with 200-micron perforations has been placed to the right of the image, as well as a graphic superposition of circles of the most representative sizes of the samples.
    [0061] Figure 10: Sample obtained manually by an inexperienced user
    [0062] Figure 11: sample obtained using a 1.2 mm 8-hole nozzle (figures 8 and 9)
    [0064] Figure 12: sample obtained using a 1.3mm 1-hole nozzle (figures 6 and 7)
    [0065] These clear differences translate into an objective quantification of the quality of the emulsion achieved, their values are shown in Figures 13 and 14, quantifying in an area of 1 cm2. It can be seen that in the emulsion made manually, the highest percentile is found in the sizes of the intervals from 0.15 to 0.20 and from 0.2 to 0.3, even finding bubble sizes above this last range. Regarding the automatic emulsions obtained, to what extent the bubble size is decreased, reaching in the case of the single-hole nozzle to find the sample below 0.15 microns.
    权利要求:
    Claims (7)
    [1]
    1. Procedure to emulsify milk through a steam lance in machines for making hot drinks characterized by starting the emulsion when the user acts on the toggle switch (1), after which the data is interpreted by the control unit stored in at least one memory containing the preset optimal parameters that determine the quality of the emulsion, stopping the process when the milk temperature reaches its target temperature, controlling a preset time limit that also stops the process, the procedure is allowed the variation of the speed of the pump that provides the air flow, as well as the cut-off of the supply near the end of the cycle that allows to homogenize the emulsion, it is also possible to manage these parameters prior to the emulsion by the user through a visual touch screen (two); The steam and air flow through the steam lance (3) passing through a removable nozzle (4) with at least one channel and outlet orifice whose orientation differs by an angle of at least 30 degrees with respect to the vertical axis of the lance, the diameter of the hole is between 1.2 and 1.3 mm, by activating the toggle switch in another of its positions it is allowed to stop the air before reaching the final temperature of the desired emulsion; Once the emulsion has been carried out, the procedure allows different cleaning modes of the emulsion lance: an internal manual cleaning activated by the user that, by means of the toggle switch in another of its positions, opens the steam valve, making it go to through the lance without operating the air pump, an automatic cleaning that is activated if it is detected that it has not been carried out after a predetermined time or it has not been carried out with enough time designated as desirable to guarantee the sanitation of the assembly; To avoid the risk of burns when the automatic cleaning is activated and that the steam can reach the user, the procedure includes a system for detecting the position of the lance in such a way that cleaning will only start if the lance is in a vertical position in the one that the steam comes out towards the spill collection tray (6) of the machine out of reach to the user, if not, it will make a warning to move to this position.
    [2]
    2. Machine for carrying out the method of claim 1, characterized by having a steam lance (3) with means to vary the quality of the emulsion By means of at least one removable outlet nozzle (4), it has a temperature sensor (5) that emerges through it at its end to measure the temperature of the milk, and through which the steam from a conventional boiler and the air injected from an adjustable pump; It has a visual touch screen (2) to interact with the user and a toggle switch (1) to start the emulsion, stop or manual cleaning functions; It has at least one control unit and at least one memory in which the operating data entered from the factory or by the user are stored, its control logic provides for automatic cleaning if after a specified time no one has been performed. manual cleaning or the time of this has been less than that stored in the memory as adequate, its measurement is carried out by means of at least one clock that sets the time base of the events, it has means to avoid the risk of burns to the user during the automatic cycle, operating only if the steam lance is in the vertical position and the steam is directed to the spill collection tray (6) as a micro contact switch.
    [3]
    3. Machine for carrying out the procedure dependent on claim 2, characterized in that it is the pump used to inject the air from an adjustable peristaltic pump.
    [4]
    4. Machine to carry out the procedure dependent on claim 3, characterized in that it is the pump used to inject the air from an adjustable membrane pump.
    [5]
    5. Machine for carrying out the method dependent on claim 2, characterized in that the removable outlet nozzle (4) has a single channel and orifice with an inclination measured vertically with respect to the temperature probe between 20 ° and 40 ° whose diameter has a value between 1.1mm and 1.4mm.
    [6]
    6. Machine to carry out the method dependent on claim 2, characterized in that the removable outlet nozzle (4) has at least 6 channels and holes with an inclination measured vertically with respect to the temperature probe between 20 ° and 40 °. °, and whose diameters have a value between 1.1mm and 1.4mm.
    [7]
    7. Machine for carrying out the method dependent on claims 5 and 6, characterized in that the removable outlet nozzle (4) has two flat surfaces parallel to each other for assembly and / or disassembly with a fixed wrench.
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    同族专利:
    公开号 | 公开日
    WO2020183050A1|2020-09-17|
    ES2782699B2|2022-01-12|
    IL286253D0|2021-10-31|
    WO2020183328A1|2020-09-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20090047402A1|2007-08-16|2009-02-19|Cafina Ag|Device For Frothing And Steaming Milk|
    WO2011048078A2|2009-10-22|2011-04-28|Elektra S.R.L.|Milk frothing method and milk frothing device for implementing the method|
    WO2014165911A2|2013-04-10|2014-10-16|William Westmore Purton|Espresso milk frother|
    AU2015202474A1|2014-05-09|2015-11-26|Sunbeam Corporation Pty Ltd|Beverage maker with steam wand|
    AU2016240389A1|2015-03-30|2017-10-12|Breville Pty Limited|Improved apparatus and method for frothing milk|
    WO2017152221A1|2016-03-07|2017-09-14|Breville Pty Limited|Steam wand|
    FR2687057B3|1992-02-10|1994-04-29|Moulinex Sa|CONTAINER CONTAINING MILK SUITABLE FOR A CAPPUCCINO ACCESSORY.|
    ES1040055Y|1998-03-11|1999-07-16|Gaggia Espanola|MACHINE FOR PREPARING EXPRESS COFFEE WITH A MILK EMULSIONING DEVICE.|
    EP2633788A1|2012-02-28|2013-09-04|Gruppo Cimbali S.p.A.|Automatic device for heating and foaming milk|
    法律状态:
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    2022-01-12| FG2A| Definitive protection|Ref document number: 2782699 Country of ref document: ES Kind code of ref document: B2 Effective date: 20220112 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201930228A|ES2782699B2|2019-03-12|2019-03-12|Process and machine for emulsifying milk|ES201930228A| ES2782699B2|2019-03-12|2019-03-12|Process and machine for emulsifying milk|
    PCT/IB2020/051979| WO2020183328A1|2019-03-12|2020-03-06|Method and machine for emulsifying milk|
    PCT/ES2020/070175| WO2020183050A1|2019-03-12|2020-03-12|Procedure and machine for the emulsification of milk|
    IL286253A| IL286253D0|2019-03-12|2021-09-09|Method and machine for emulsifying milk|
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