• 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:
    The invention relates to a device for foaming a liquid food, in particular milk, which device comprises a pump (2) of the liquid food from a container (1) a water heater (5), at least one throttle (4a, 4a ') and an air supply ( 3a, 3b), wherein the throttle (4a, 4a ') and the flow heater (5) on the pressure side of the pump (2) are arranged and the air supply (3a, 3b) for supplying air into the flow path (4', 4 ' ') Of the food upstream of the throttle (4a, 4a') is formed and arranged. The invention is characterized in that the device is designed such that optionally - in a cold foam mode, a flow path (4 '') for the food-air mixture through the one throttle (4a ') with a first throttle area or - in a hot foam Mode a flow path (4 ') for the food-air mixture through the one throttle (4a) with a second throttle cross-section or through another throttle of the device with a second throttle cross-section, which is arranged on the pressure side of the pump (2), and by the water heater can be predetermined, wherein the first and second throttle cross section are different. The invention further relates to a method for foaming a liquid food, in particular milk.
    公开号:CH710062A2
    申请号:CH01195/15
    申请日:2015-08-19
    公开日:2016-02-29
    发明作者:Mariano Turi；Heinz Vetterli
    申请人:Franke Kaffeemaschinen Ag；
    IPC主号:
    专利说明:

    The invention relates to a device and a method for foaming a liquid food, in particular a device for frothing milk according to the preamble of claim 1.
    For foaming a liquid food devices are known in which by means of a pump, the liquid food is conveyed from a container, wherein the suction side of the pump air is supplied by means of an air supply.
    Devices according to this basic structure are known, for example, from EP 1 593 330 B1 for producing warm milk foam and from EP 2 298 142 B1 and EP 2 120 656 B1 and EP 2 583 596 for selectively producing hot or cold milk foam.
    The present invention has for its object to improve the foam quality of the foamed food.
    This object is achieved by a device according to claim 1 and by a method according to claim 9. Preferred embodiments of the inventive device can be found in claims 2 to 8 and the inventive method in claims 10 to 12.
    The inventive device is preferably designed for carrying out the inventive method, in particular a preferred embodiment thereof. The inventive method is preferably designed for performing by means of the inventive device, in particular a preferred embodiment thereof.
    The inventive device for frothing a liquid food, in particular milk has a pump for conveying the liquid food from a container, a water heater, at least one throttle and an air supply. The throttle and the flow heater are arranged on the pressure side of the pump and the air supply is designed and arranged such that air can be fed into the flow path of the food upstream of the throttle.
    Such a structure is basically known from the aforementioned publications.
    It is essential that the device is designed such that eitherin a hot foam mode, a first flow path for the food-air mixture through a pressure side of the pump arranged first throttle with a first throttle cross-section, as well as through the water heater orin a cold foam mode, a second flow path for the food-air mixture can be predetermined by a second throttle having a second throttle cross-section. Here, first and second throttle cross section are different.
    At least two flow paths for the food-air mixture are provided on the delivery side of the pump, wherein the instantaneous water heater is arranged in a first of the at least two parallel flow paths and wherein the one throttle in the second and the further throttle in the first of the parallel flow paths is arranged , Thus, optionally, a flow path for the food-air mixture by one or by the other of the parallel flow paths can be predetermined.
    By means of the device according to the invention, a user can thus selectively produce cold or warm foam of the food, wherein for the production of the cold foam, a different throttle cross-section compared with the throttle cross-section is used in generating the warm foam.
    Investigations have shown that the parameters for producing a desired foam consistency and in particular the optimal throttle cross-section depend on the temperature of the liquid food. With the device according to the invention it is thus possible to achieve an optimization in the generation of foam on the one hand for the production of warm foam and on the other hand for the production of cold foam.
    Investigations have shown that in this case preferably both first and second throttle cross section are selected such that in each case a throttle function is exercised, d. H. that in both throttle cross-sections a cross-sectional taper occurs in the flow path of the food-air mixture at the location of the throttle, but different strong cross-sectional tapers in cold foam mode on the one hand and in hot foam mode on the other.
    As a result, a previously unachieved quality in both types of foam - both cold and warm - scored.
    In the inventive method for foaming a liquid food, especially for frothing milk, the liquid food is mixed with air and optionally heated. It is essential here that in a warm foam mode, the food-air mixture is throttled with a first throttle cross-section and throttled in a cold foam mode, the food-air mixture with a second throttle area, wherein the first and second throttle area are different. In the method according to the invention, when hot and cold foam are produced, throttling therefore takes place due to a reduction in the line cross section, but in the cold foam mode the throttle cross section is different from the warm foam mode.
    This results in the advantages listed above in the description of the inventive device.
    By the pressure side of the pump formed at least two flow paths for the food-air mixture, wherein the water heater is arranged in a first of the at least two parallel flow paths, is achieved that only when passing through a (first) flow path, the food-air mixture the water heater flows through. When producing cold foam, however, the food-air mixture is passed through the second flow path, so that no flow through the water heater takes place.
    This results in the advantage that in cold foam mode no fouling of the water heater takes place and that it is also irrelevant whether the water heater due to its thermal mass even in the off state still emits residual heat, as described above in the cold foam mode the water heater is not flown through.
    For this purpose, a branching in the flow path of the food-air mixture in at least the previously described two parallel flow paths is preferably provided for this purpose on the pressure side of the pump. Here, a multi-way valve in the flow path of the food-air mixture can be arranged at the aforementioned branch, so that by means of the multi-way valve in a simple manner, the desired flow path can be selected. It is also possible to provide a branch line (a so-called Y branch) and to provide a valve in each of the two parallel flow paths so that the desired flow path can also be predetermined by opening one valve and closing the other valve. The latter embodiment has the advantage that the two valves can be formed simultaneously as a throttle, d. H. Each of the two valves offers the possibility of being completely closed or of forming a variable, pre-definable flow cross-section.
    It is also within the scope of the invention to provide in each of the two parallel flow paths in each case a valve and a throttle, preferably in each case a valve and a variable throttle.
    It is therefore within the scope of the invention that the device comprises the first throttle and the second throttle, wherein the first throttle in the first and the second throttle in the second of the two parallel flow paths is arranged, so that in cold foam mode the food-air mixture is passed via the second throttle in the second parallel flow path bypassing the water heater to an outlet and in the hot foam mode, the food-air mixture is passed through the first throttle through the first of the two parallel flow paths and thus through the water heater ,
    A particularly high foam quality is achieved by the throttle is arranged upstream of the flow heater and / or pressure side of the pump. In particular, a good foam result is achieved by the throttle is arranged both upstream of the water heater, and on the pressure side of the pump.
    In the preferred embodiment, both throttles are preferably arranged on the pressure side of the pump and the second throttle is arranged as described above upstream of the water heater.
    Furthermore, it is advantageous for the foam quality that the air supply upstream of the two throttles, preferably the suction side of the pump is arranged. In the embodiment with the first and the second throttle, the air supply is correspondingly preferably arranged upstream of both throttles, in particular preferably on the suction side of the pump.
    Furthermore, the formation of the pump is advantageous as a gear pump to achieve a high foam quality.
    It is within the scope of the invention that the air supply takes place actively, in particular by means of an air pump.
    In a preferred embodiment, the air supply takes place by means of the Venturi effect. For this purpose, the air supply to a corresponding venturi element, which is arranged in the flow path of the food and is designed such that air is supplied by means of the venturi effect due to the flow of the liquid food. This passive air supply has the advantage that no additional components such as an air pump are necessary.
    The air supply is advantageously designed as a variable air supply, so that optionally at least two different air supply flows can be predetermined. This makes it possible to further optimize the foam quality by specifying an optimized amount of added air. In particular, it is therefore advantageous that the device has, as described above, a control unit which is connected to the variable air supply and is designed to cooperate such that different air supply flows can be predetermined by means of control signals of the control unit. Thus, in this preferred embodiment, advantageously, in cold foam mode, a different air supply flow (i.e., amount of air per time) can be preset as compared to the hot air mode air supply flow. In particular, in combination with one or more variable throttles as described above, in this preferred embodiment, the throttle cross-section and air supply flow parameters can already be specified separately for the cold foam mode on the one hand and the hot foam mode on the other hand, so that optimum foam quality is achieved for both modes can.
    Advantageously, the air supply therefore has a variable, controllable air valve. Such may be formed as known per se, driven by an electric motor valve.
    However, it is particularly advantageous to design the air valve as an intermittent air valve, as by a corresponding timing in the specification of the air supply flow, a further increase in the foam quality is possible. The use of such an intermittent air valve is described in EP 2 298 142 B1 and is preferably carried out ananolg in the inventive device.
    In a further advantageous embodiment, in which the device comprises a control device as described above, the pump is connected to the control unit and designed to cooperate such that by means of control signals of the control unit, the delivery rate of the pump is optionally predetermined. In this preferred embodiment, therefore, a different delivery rate to the hot foam mode can also be specified in the cold foam mode. This is particularly advantageous if, as described above, in addition the air supply quantity and the throttle cross-section can each be specified for warm foam mode on the one hand and cold foam mode on the other hand, as this further optimization of the foam quality is possible.
    The inventive device can be used for foaming different liquid foods. In particular, the device is suitable for frothing milk. Foamed milk is used in a variety of mixed drinks, especially coffee blended drinks. The inventive device is therefore preferably designed as part of a coffee machine for producing coffee mixed drinks, wherein the coffee machine preferably has a brewing unit for producing coffee, so that coffee together and / or staggered with milk and / or frothed milk, in particular optionally warm Milk foam or cold milk foam can be spent. Likewise, it is within the scope of the invention to design the device as a set-top device, in particular for a coffee machine. In this case, the device preferably has an output connection, to which a corresponding milk foam inlet of the coffee machine can be connected in a fluid-conducting manner, so that the milk foam produced by means of the device can be conducted via the coffee machine to an outlet of the coffee machine.
    When using liquid foods, it is necessary to rinse the perfused by the food components. This is especially true when using milk and when using the device in the non-private sector, especially in the catering sector.
    In a preferred embodiment, therefore, the device has a purge line, which is designed for supplying rinsing liquid and / or steam at least to the first throttle and the flow heater. Preferably, the purge line thus opens into the flow path of the liquid food upstream of the first throttle and instantaneous water heater.
    This can thus be done by means of the rinsing liquid and / or the steam flushing of the throttle and the water heater. Particularly advantageous here is the previously described design of the throttle as a variable throttle with a variable throttle cross-section, so that either a purge throttle cross section can be specified, wherein the purge throttle cross section is greater than the first and the second throttle cross section. As a result, a particularly efficient flushing process can thus be achieved, since the throttling effect during the flushing process is reduced on account of the enlarged throttle cross-section. In particular, it is advantageous to form no throttle effect in the flushing process, d. H. to select the throttle cross-section such that there is no reduction of the line cross-section with respect to the upstream line, so that an optimal flow of the detergent is possible.
    In particular, the water heater must be thoroughly cleaned, since due to the heating of the food-air mixture in the water heater there is an increased risk of sticking, in particular a baking of food residues in the water heater. Preferably, therefore, when forming the device with two parallel flow paths and a first and a second throttle as described above, at least formed the flow restrictor of the flow heater with variable throttle cross-section, so that at least when flushing the water heater opening this throttle and thus efficient purging of the Flow heater is possible.
    The term throttle in the context of this application designates an element which has a reduced flow area (= the area of the throttle cross-section), which thus represents a narrowing of the line cross-section, compared to the immediately upstream line. The flow area is preferably at least approximately circular, so that the flow area results from (diameter of the throttle cross-sectional area) <2> times Pi times 1/4. Likewise, other forms of throttle cross-section are within the scope of the invention.
    In principle, the first and second throttle cross section can differ only in the form, but not in the cross-sectional area, since, in particular due to non-laminar flows, different shapes can lead to different throttling effects. Preferably, however, the first and second throttle cross sections differ, at least with regard to the cross-sectional area, in order to ensure a different throttle effect even in the case of laminar flows. A particularly technically easy to implement embodiment is achieved here by first and second throttle cross section have the same shape, in particular are approximately circular.
    Investigations have shown that preferably in cold foam mode, a larger throttle cross-sectional area is provided compared to the hot foam mode.
    Downstream of the throttle, an extension of the line cross-section is preferably provided. It is within the scope of the invention that the distance between the constriction and extension of the line cross-section is very small, in particular less than 1 cm, more preferably less than 0.2 cm. In particular, the one and / or the further throttle can thus be designed as a diaphragm. Likewise, larger distances between the constriction and extension of the line cross-section are within the scope of the invention, preferably the distance is less than 20 cm, in particular less than 10 cm.
    In approximately circular throttle cross-sections of the throttle cross-section diameter for the production of high-quality foam is preferably in the range 0.5 mm to 2 mm.
    The throttle cross-sectional area is preferably in the range of 0.2 mm 2 to 3.14 mm 2.
    The pressure ratios generated by the interaction, in particular of the pump, the pressure side of the pump, and the line cross section and line length, in particular downstream of the throttle, are preferably as follows in order to produce high quality foam:
    Preferably, the pump and throttle are designed to cooperate such that between the pump and throttle a pressure in the range 2 bar to 10 bar, in particular in the range 3 bar to 7 bar, preferably about 5 bar is present. The pressure drops after the extension of the line cross-section downstream of the throttle preferably by at least 1 bar, in particular at least 2 bar, more preferably by at least 3 bar.
    The above-described preferred ranges of throttle cross section and pressure are preferably realized both in the hot foam mode, as well as in the cold foam mode, wherein the throttle cross section in the hot foam mode is different from that in the cold foam mode. Likewise, preferably in the hot foam mode, a different pressure between the pump and throttle can be realized as in the cold foam mode.
    As mentioned above, the device according to the invention is particularly suitable for producing milk foam. Studies have shown that, moreover, a foaming of coffee in surprisingly high quality by means of the inventive device is possible. In particular, cold coffee can be foamed with the device according to the invention, which is thus not heated by means of the continuous flow heater, in particular bypassing the water heater via a parallel flow path. Likewise, the device can be foamed in surprisingly high quality warm coffee. Here, preferably freshly brewed warm coffee is also foamed without heating by means of the water heater, in particular bypassing the water heater via a parallel flow path.
    In particular, it is advantageous to partially froth by means of the device cold or hot coffee and to store the coffee / coffee foam product in a refrigerator. In this way, cold coffee is available as needed, but which has sufficient foam.
    Further preferred features and embodiments will be described below with reference to embodiments and the figures. Showing:<Tb> FIG. 1 <SEP> a first example of a device with only one flow path;<Tb> FIG. 2 <SEP> an inventive embodiment with two parallel flow paths and two throttles and<Tb> FIG. 3 <SEP> a third example with two parallel flow paths and only one throttle.
    The figures show schematic, not true to scale representations. The same reference numerals in FIGS. 1 to 3 designate the same or equivalent elements.
    Fig. 1 shows a first example of a device. The device is designed for frothing milk, which is located in a container 1. The container 1 is arranged in a (not shown) refrigerator.
    By means of a pump 2, which on the suction side has a delivery line 3, milk is conveyed from the container 1. The device further comprises an air supply having an air supply line 3a and an air valve 3b.
    The air valve 3b is arranged on a housing of the device shown in dashed lines, so that air from the environment of the device can be sucked. The air supply line 3a opens on the suction side of the pump 2 in the delivery line 3, wherein at the injection point a Venturi element is arranged such that when conveying milk from the container 1 by means of the pump 2 air through the air valve 3b via the air supply line 3a of the milk in the delivery line 3 is supplied.
    The pump 2 is designed as a gear pump.
    In a pressure line 4, the pressure side of the pump first a throttle 4a and further downstream a water heater 5 is arranged. Further downstream of the flow heater 5, the pressure line 4 opens into an outlet 6, so that the milk foam can be discharged into a vessel such as a cup 11.
    The throttle 4a is designed as a variable throttle, so that by means of a control unit 9 of the device two different flow cross-sections of the throttle 4a are predetermined.
    If the user now selects the output of cold milk foam via a control panel (not shown), a first flow cross-section of the throttle 4a is set by means of the control unit 9 and the milk-air mixture is switched off by means of the pump 2 with the milk froth 5 switched off from the outlet 6 issued. If, on the other hand, the user selects warm milk foam, a second flow cross-section, which is different from the first flow cross-section, is set at the throttle 4a, the instantaneous water heater 5 is activated and accordingly, by means of the pump 2, warm milk foam is discharged from the outlet 6.
    In the control unit 9, the optimized parameters are thus stored, in particular with regard to the throttle cross section of the throttle 4a and the conveying speed of the pump 2 on the one hand for warm milk foam and on the other hand for cold milk foam and are retrieved according to the selected operating mode and passed on to the individual components by means of control signals ,
    The air valve 3b is presently designed as manually operable air valve, so that the user can perform an optimization of the amount of air supplied by hand.
    The throttle cross-section is approximately circular in cold foam mode and in hot foam mode and has a diameter of 0.9 mm in cold foam mode and a diameter of 0.7 mm in hot foam mode. The pressure between pump and throttle in cold foam mode is about 4 bar and in hot foam mode about 5 bar. The pressure downstream of the throttle in both cases is about 0.5 bar.
    The air valve may be formed as an electrically controllable air valve and also be connected to the control unit 9 (shown by a dotted line). As a result, the air supply flow can be set automatically by the control unit 9 and, in particular when producing warm milk foam, another air supply flow can be predetermined compared with the production of cold milk foam.
    In a further preferred variant of the embodiment, the air valve 3b is formed as an intermittent air valve according to EP 2 298 142 B1 and also connected to the control unit 9, so that by means of the control unit via a specification of clock frequency and DC (duty cycle), d , H. Presetting the duty ratio, the air supply is stored as a further parameter on the one hand for the cold foam mode and on the other hand for the hot foam mode and passed according to the user choice by means of control signals to the air valve 3b.
    For cleaning the device, a hot water unit 7 is provided with a purge line 8, which opens into the delivery line 3 between the air supply line 3a and pump 2.
    In a cleaning mode, hot water is sucked in via the flushing line 8 by means of the pump 2 by means of the hot water unit 7. For this purpose, a purge throttle cross-section of the throttle 4a is set by means of the control unit 9, which has no cross-sectional reduction with respect to the pressure line between the pump 2 and throttle 4a. The water heater 5 can thus be rinsed with a high flow rate by means of the hot water.
    Fig. 2 shows an embodiment of a device according to the invention, which has a similar structure to the device shown in the first example. To avoid repetition, only the essential differences are discussed below:
    The exemplary embodiment has two parallel flow paths:
    Pressure side of the pump 2 branches the pressure line 4 in a first flow path 4 'and a second flow path 4' ', wherein the first flow path 4' and second flow path 4 '' are arranged in parallel and the flow heater 5 in the first flow path 4 ' is. Both parallel flow paths 4 'and 4 "open together into the outlet 6.
    The device therefore has a first throttle 4a and a second throttle 4a '. Both are formed in the embodiment as variable throttles and connected to the control unit 9. The variable throttles 4a and 4a 'allow in particular the specification of a throttle cross-section 0, d. H. They also offer the functionality of a valve. In this way, by specifying the throttle cross-section 0 in either the throttle 4a or the throttle 4a 'one of the two parallel flow paths can be specified, so that the production of cold milk foam, the milk-air mixture, bypassing the water heater 5 via the further throttle 4a' and the second flow path 4 "is led to the outlet 6 and, according to the production of warm milk foam instead of the second flow path 4", the first flow path 4 'with the first throttle 4a and the flow heater 5 is flown through by the milk-air mixture.
    In this case too, a different throttle cross-section is predetermined for producing cold milk foam in the first throttle 4a in comparison to the predetermined throttle cross-section in the further throttle 4a 'when producing warm milk foam.
    In an alternative embodiment, in each of the two parallel flow paths 4 'and 4' 'in each case a valve upstream of the variable throttle, both valves are also connected to the control unit 9, so that in this case the throttles 4a and 4a' need not be designed so that a throttle cross-section 0 can be specified, but the choice of the flow path by appropriate switching of the two aforementioned valves takes place.
    The rinsing of the device is carried out as already described in FIG. 1, wherein in the device according to FIG. 2 both flow paths are rinsed sequentially in succession.
    As a third example, FIG. 3 shows a device which basically has the same structure as the second embodiment according to FIG. 2. Again, to avoid repetition, only the essential differences are addressed:
    In contrast to FIG. 2, only one variable throttle valve 4a is provided and, moreover, a multiway valve 10 is provided at the branch of the pressure line 4 to the first flow path 4 'and the second flow path 4' '.
    In the cold foam mode, the multi-way valve is thus switched by means of the control unit 9 such that the milk-air mixture via the second flow path 4 '' is output. At the same time - as described in the first embodiment - the variable throttle 4a is set to a stored first throttle cross-section. Accordingly, in a hot foam mode, the multi-way valve 10 is switched so that the milk-air mixture via the second flow path 4 '' and the water heater 5 is output under heating to the outlet 6, wherein by means of the control unit 9, the variable throttle 4a to a second Throttle cross section is made.
    权利要求:
    Claims (12)
    [1]
    1. A device for frothing a liquid food, in particular milk, which device comprises a pump (2) for conveying the liquid food from a container (1), a water heater (5), at least one throttle (4a, 4a ') and an air supply wherein the at least one throttle (4a, 4a ') and the flow heater (5) are arranged on the pressure side of the pump (2) and the air supply for supplying air into a flow path of the food upstream of the at least one throttle (4a, 4a') is designed and arrangedcharacterized in thatthe device on the pressure side of the pump has at least two flow paths (4 ', 4' ') for the food-air mixture, wherein in a first (4') of the at least two parallel flow paths (4 ', 4' ') of the water heater (5) and a first throttle (4a ') having a first throttle cross section are arranged, and in a second (4' ') of the at least two parallel flow paths (4', 4 '') a second throttle (4a ') having a second throttle cross section is arranged, wherein the first and second throttle cross section are different, and that the device is designed such that for the food-air mixture optionally in a hot foam mode, the first (4 ') flow path (4') through the first throttle (4a) and through the water heater (5) or in a cold foam mode, the second flow path (4 '') can be predetermined by the second throttle (4a ').
    [2]
    2. Device according to one of the preceding claims, wherein the first throttle (4a) between the pump (2) and the water heater (5) is arranged.
    [3]
    3. Device according to one of the preceding claims, wherein the air supply is arranged on the suction side of the pump (2).
    [4]
    4. Device according to one of the preceding claims, wherein the air supply is designed as a variable air supply, so that optionally at least two different air supply flows can be predetermined.
    [5]
    5. The apparatus of claim 4, wherein the device comprises a control unit (9) which is at least cooperatively formed with the air supply that in the hot foam mode air with a first air supply flow and in a cold foam mode air with a second air supply the food is supplied, wherein the first and second air supply flow are different.
    [6]
    6. Device according to one of the preceding claims, wherein the device comprises a purge line (8), for supplying rinsing liquid and / or steam at least to the first throttle (4a) and the water heater (5) and that the first throttle (4a) is designed as a variable throttle with a variable throttle cross-section, so that either a purge throttle cross section can be predetermined, wherein the purge throttle cross section is greater than the first and the second throttle cross section.
    [7]
    7. Device according to one of the preceding claims, wherein the pump (2) and two throttles (4a, 4a ') are designed to cooperate such that between the pump (2) and the throttle (4a, 4a'), a pressure in the second bar to 10 bar, in particular in the range of 3 bar to 7 bar, preferably about 5 bar is present, especially in cold foam mode and in hot foam mode.
    [8]
    8. coffee machine for producing coffee mixed drinks,with a brewing unit for producing coffee and a device for foaming a liquid food according to one of the preceding claims.
    [9]
    9. A method for frothing a liquid food, especially milk, wherein the liquid food mixed with air and the food-air mixture optionally- Is pumped in a hot foam mode by a first pressure side of a pump (2) arranged flow path (4 '), wherein it is throttled along the first flow path (4') by a first throttle (4a) with a first throttle cross-section and in a Instantaneous water heater (5) is heated orIs pumped in a cold foam mode through a second flow path (4 '') parallel to the first flow path (4 '), along which it is throttled by a second throttle (4a') having a second throttle area,wherein the first and second throttle cross section are different.
    [10]
    10. The method of claim 9, wherein in the hot foam mode, air having a first air supply flow and in the cold foam mode, air is supplied with a second air supply flow, wherein the first and second air supply flow are different.
    [11]
    11. The method according to any one of the preceding claims 9 to 10, wherein at least the first throttle (4a) is designed as a variable throttle whose throttle cross-section and in a purge water and / or steam through the first throttle (4a) and the water heater (5 ) is slid and in the purge mode, the reduction of the variable throttle (4a) is set to a purge throttle cross section, wherein the purge throttle cross section is greater than the first and the second throttle cross section.
    [12]
    12. The method according to any one of the preceding claims 9 to 11, wherein the method foams coffee.
    类似技术:
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    同族专利:
    公开号 | 公开日
    JP2016043266A|2016-04-04|
    EP2987435A1|2016-02-24|
    EP2987435B1|2020-03-18|
    CH710062B1|2019-03-29|
    PL2987435T3|2020-08-10|
    ES2784635T3|2020-09-29|
    DE102014216534B3|2016-02-18|
    US20160051083A1|2016-02-25|
    JP6763651B2|2020-09-30|
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    法律状态:
    2020-09-30| PFA| Name/firm changed|Owner name: FRANKE KAFFEEMASCHINEN AG, CH Free format text: FORMER OWNER: FRANKE KAFFEEMASCHINEN AG, CH |
    2021-03-31| PL| Patent ceased|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014216534.2A|DE102014216534B3|2014-08-20|2014-08-20|Apparatus and method for frothing a liquid food, in particular milk|
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