Method of preparation of foam from food liquid and device for this operation

FIELD: food industry.

SUBSTANCE: device for foam preparation from liquid based on milk or out of milk contains a tank into which whipped liquid is supplied and in which there is a rotatable stirrer, rack connected with the tank and stirrer driving gear system. Stirrer driving gear system and the stirrer contain magnetic elements ensuring rotation of the mixer under influence of magnetic field in the tank. There are means of creating agitations disturbing or preventing symmetrical circulation of the liquid around the central vertical axis of the tank.

EFFECT: invention simplifies method of foam preparation owing to restricting amount of operator's actions.

25 cl, 10 dwg

 

The present invention relates to a method for preparing foam from food liquids, such as milk, and device for its implementation and is used for the preparation of beverages such as cappuccino (cappuccino, coffee with milk, coffee latte, machiatto, hot chocolate and other hot specialty drinks.

Special drinks at least part of which is foam, are becoming more common. A well-known drink of this type is coffee with whipped cream. This drink contains the liquid part, consisting of coffee, on top of which there is a layer of frothy milk, which is due to the very low density floats on the liquid surface. The preparation of this drink requires time to perform certain manipulations and cleaning device.

The most common method of preparation of foam on the basis of milk lies in the fact that the capacity of the pour desired amount of milk, immersed in a container tube for exit of steam from the coffee, mix the milk on the top and bottom for the introduction of air required for the formation of foam.

The first disadvantage of this method is that you want coffee with output pair and not all coffee makers are equipped with them.

Another drawback of this method is that it is impossible to prepare the foam and at the same time, cook the coffee, unless you purchased an expensive and sophisticated coffee with two separate circuits fluid, one - for coffee, the other for steam.

Another drawback of coffee with tubes for the pair is the fact that heated water in these devices, which is in most cases, the fuser must be in an enabled state in order to produce steam without interruption. As a result, these devices consume more power, which makes them not very economical in operation. It should also be noted that tube steam to escape quickly become covered with scum, especially when hard water is used, therefore, requires constant care to maintain them in good condition.

Another drawback of devices of this type with tubes is that the quality of the foam depends on the skill of the user, and this means that these devices do not provide the foam with the same properties and the same quality.

Another disadvantage is that the tube in contact with the milk, it is difficult to clean.

There are also mechanical mixing device, which is normally used for local use for whipping more or less viscous food products such as eggs, ice, juices, etc. There are various issues that make the us the device is unsuitable for the preparation of foam from the liquid milk-based, used for making beverages. For example, one drawback is that these devices mix a liquid or a paste in cold condition, which severely limited their use. In addition, milk is not whipped properly when it is cold or at ambient temperature.

Another disadvantage is that these devices are unsuitable for mixing liquids with microbiological sensitivity, such as milk. Must be provided by regular cleaning capacity of the device to remove any solid food residues. In addition, when heated milk is growing region on the surface of the tank or near it, on which are deposited primechanie or prigionia proteins. Existing devices for the most part, are not adapted to reduce such deposits of solid residues that causes problems with cleaning.

These devices also contain a mixing and an actuator which is inserted into the container and has a number of disadvantages: although the time of its removal and re-installation slightly, they tend to quickly become soiled, in addition, be paid the additional cost due to the large number of parts, thus mixing device it is difficult to clean.

Other nedostatki what these devices is the fact that that foaming in them is not optimal for reasons connected with placement of the mixing means. In some devices, the mixing means is located in the middle of the tank. This arrangement is not effective from the point of view of change of the volume of liquid milk-based in the lush lather.

Other devices contain a variety of mixers. These devices are mechanical means necessary to control the rotation of the mixer, and it adds complexity to the system, impairs its hygienic properties, leads to an increase in the number of parts and makes the cleaning process more time-consuming operation.

U.S. patent No. 6318247 relates to a device for cooking with whipping hot drinks or food, such as hot chocolate. These devices contain a mechanism to bring the mixer in action, based on a magnetic effect. However, this device has several disadvantages. First, in this device the liquid or foam is mixed in its rotation around the axis, located along the Central axis of the vessel, and this causes turbulence, which due to the centrifugal effect produced by the mixer, some of the layers of liquid or foam, especially in the peripheral layers do not mix as readily as in other layers, particularly near the center. Therefore, such a twist is I do not contribute to obtaining a foam of good quality or reduce time required for such mixing. Furthermore, the design of this device does not meet health standards for the processing of liquid milk-based, not easier cleaning of this design.

Other devices for mixing foods that have more or less the same disadvantages, as described in patent documents WO 2004/043213 A1 or DE 19624648 A1.

Other devices of the electromagnetic stirring type described in documents US 2923493, DE 1131372, US 4537332 and US 6712497, but none of them provided quality, hygiene-compliant foam for a short time.

Utility model DE 8915094 relates to refrigerated tanks serving for distribution of milk-based drinks. The tank contains the cooling means and the enhanced convection in the form of a magnetic rotor. Such a device is not suitable for conversion of the liquid into foam, but simply maintains the liquid in a homogeneous state in the chilled.

In U.S. patent 3356349 described mixing device containing the heated tank, an electromagnetic actuator located under the tank and driving the hub of the wheel located in the middle of the tank. The sleeve is connected with a mixing element, which is displaced relative to the sleeve, causing the element to oscillate. This paragraph shall inzip mixing can lead to the loss of magnetic coupling due to the large moment of inertia, occurs when the offset of the mixing element about the axis of rotation. This problem is exacerbated with increasing speed. Therefore, this mixing device can operate for beating certain liquids or other substances at a low speed of rotation, but is not suitable for the conversion of the liquid into the foam at a sufficiently high speed. In any case, this document does not mention the possibility of turning the liquid into foam using this device.

Therefore, the main aim of the present invention is to eliminate the disadvantages of the known devices by creating a device that is more suitable for receiving foam from food-based fluid milk, in particular for the preparation of drinks.

Thus, the aim of the present invention is to provide a device which design is more than meets the hygienic requirements can easily be cleaned and easy to use.

Another objective of the present invention is a device which produces foam with reproducible properties and quality and in the shortest time.

Another objective of the present invention is the simplification of the method of preparation of the foam due to the limitation of the number of operator actions.

Another objective of the present invention is the creation of the device, which is economical to use.

Thus, the present invention relates to a device for preparing foam from a liquid milk-based, containing: capacity in which served beat the liquid and which has a rotating stirrer; a rack connected to the tank, means for bringing the stirrer in motion, the device also includes means for supplying power to power the drive.

One advantage is that the actuator and the stirrer are made so that the stirrer is driven with a drive through the electromagnetic interaction without the use of a mechanical connecting element passing through the wall.

One distinctive feature of the present invention is that the device is designed to receive and process the food liquid which is easily deposited on the vessel walls, particularly when heated, and therefore, the system of bringing the rotation of the stirrer is not inserted into the vessel and is simpler and more appropriate hygienic requirements.

Another distinguishing feature is that means are provided to create disturbances to disrupt or prevent the circulation of the liquid, which is symmetric and more or less coaxial consider is Ino Central vertical axis of the vessel. This design ensures that the circulation of liquid in the tank is sufficient turbulence, which reduces the cooking time of the foam and provides a high ratio of the foam/liquid. Using this design it is possible to get results by using located outside the drive system according to the present invention and, therefore, working with only one stirrer, which greatly simplifies the device and reduces its cost.

Preferably, in the tank were installed heaters used for heating the liquid. Heaters provide simultaneous heating of the liquid and foam during foam preparation.

In accordance with one embodiment of the present invention the device has an actuator that generates at least one magnetic field, which is offset from the Central vertical axis of the vessel. This offset magnetic field works as a means of creating perturbations due to the displacement of the stirrer relative to the Central axis of the container.

So, in the shifted position of the stirrer layers of a liquid, foam or liquid/foam, located coaxially relative to the axis, are mixed in an asymmetrical configuration due to the centrifugal effect.

This drive is the fast external that means that there is no need to enter in the capacity of transmitting elements in order to connect the drive with a stirrer, or attach the mixer to the vessel, or move it towards her, making the appropriate hygienic requirements and more amenable to easy cleaning.

In a preferred embodiment, the mixing stirrer element also performed in order to provide the location of the stirrer, connected to the specified drive, along the axis of rotation that is offset from the Central vertical axis of the vessel, resulting in a stirrer during the rotation creates a circulation of the liquid, not coaxial relative to the specified Central vertical axis. The locking element ensures correct positioning of the stirrer in a magnetic field. It prevents the output of the stirrer from the magnetic field before, during and after the operation of mixing. This element shows the user the location of the stirrer in a simple way, it does not require special removal or re-installation. In addition, when the container is emptied, the magnetic field created between the mixer and the drive that holds the stirrer in the container.

In one embodiment of the present invention the locking element pre who is a ledge, formed on the surface of the vessel and having the form of at least corresponding to the shape of the stirrer. Therefore, the stirrer can engage with the specified protrusion or recess. Must be provided with sufficient clearance that allows you to rotate the stirrer without a strong friction. In another embodiment, can be used the surface of materials with a low coefficient of friction.

So, stirrer set in place simply by inserting it without the use of special tools. The stirrer may be removed or attached with a connector, preferably one that provides a fast connection.

The protrusion or the recess and the bottom of the tank together form a single wall. Therefore, there is no need for the sealing elements, which simplifies the design and makes it more hygienic. It is clear that the bottom of the tank represents the entire surface in its lower part and forms the width of the container.

The ledge is made, for example, on the vessel wall in the form of a directional inside matoti capacity, which creates a depression on the outer side of this wall. This recess located on the outer side of the tank can therefore be used as a housing for the magnetic part of the drive to premesis the tel were held in place in good condition and at some distance from the vessel bottom, ensuring the improvement effect of mixing compared with alternative locations stirrer near the bottom of the tank. In a preferred embodiment, the stirrer is an annular element which is mounted around the protrusion in the container.

In one possible embodiment, the locking means may be a recess on the inner surface of the container, which is partially stirrer.

In any case the locking means serves for positioning the vessel as along the horizontal axis and along the vertical axis. It also serves as a guide for the stirrer and prevents its accidental withdrawal from the magnetic field during the mixing operation.

The stirrer may have various designs. In one embodiment, the stirrer has a ring shape with a Central groove corresponding to the coupling protrusion and working as a fixing means, with the specified stirrer is located on the bottom of the tank and has at least one driven magnet part located near the periphery of the specified Central groove. This design is effective because it allows you to easily set the stirrer in the tank. In addition, it allows you to hold the stirrer at a certain distance from the bottom of the tank that sposobstvuet is good foaming liquid.

In one embodiment of the present invention, the actuator comprises a magnetic part which is fixed on the outer side of the tank and inside the aforementioned ledge. Therefore, the magnetic part interacts with at least the specified magnetic driven part of the stirrer. The magnetic part is rotated by a spindle connected to the motor. Magnetic connection between the actuator and the stirrer so strong that reduces the risk of tripping or damage to the drive, even at high speeds.

In one embodiment, the design of the stirrer it has a peripheral part, which includes mixing elements.

Mixing elements can thus be composed of one or more of the following elements: turns of wire in the shape of a torus, blades, impellers, grill or needles. Some elements may be more effective than others, depending on, for example, from the nature of the liquid.

In a preferred embodiment of the present invention, the container is cylindrical or more or less cylindrical. However, in one possible embodiment of the present invention a tool for generating perturbations, which serves to prevent or eliminate co-axial movement of liquid in a tank, has a reservoir, the construction of which is not Zilin the historical relative to the Central vertical axis. Capacity can be given a different form that does not go beyond the scope of this invention.

In one possible embodiment of the present invention a tool for generating perturbations contains walls and/or other obstacles included in the ledge in the vessel in such a way that the tool is shifted with respect to the Central vertical axis. Therefore, these elements constitute the means which interrupts any fully coaxial movement of the liquid in the tank. These elements can be, for example, pins or other obstacles, passing radially and horizontally and/or vertically inside the tank. In the preferred case, these elements are made as a single piece or as one part focusing on capacity.

In another preferred embodiment of the present invention a tool for generating perturbations contains the control unit is programmed to switch the direction of rotation of the stirrer several times in the process of churning liquid. In particular, in the variant with a symmetric configuration of the rotation of the stirrer in the tank, if you save only one direction of rotation, then the contents (liquid and foam) are moving in the tank concentrically relative to the stirrer and the different layers at the same speed are always on the same RA is iuso and therefore not mixed to form a foam. This phenomenon prevents the formation of foam. To solve this problem must be installed intermittent stirring, so that the above-mentioned centrifugal effect would be interrupted at regular or irregular intervals. These regular interruptions direction of rotation, which is desirable to perform with a frequency of from 0.3 to 1 Hz, allow a mixture of liquid foam to fall down and get back in contact with stirrer, again mixed, as soon as rotation starts in the opposite direction.

In accordance with another distinctive feature of the present invention, the amount of capacity used for receiving fluid has a surface which does not contain a connector or connection between the two parts and any discontinuity lines of the circuit. Liquid, such as milk, tends very quickly to fill any gap by deposition of solid particles. This effect is amplified if the fluid is heated, with further liquid tends to form a partially baked or primarily layer, which is subsequently difficult to remove. The removal of these areas with solid particles helps to reduce hygiene risks and to facilitate cleaning. Thus, in the preferred embodiment, the container includes a surface for receiving liquid, which is a single is again. The capacity can be made of several elements, welded together and forming a single unit.

To improve the formation of foam and at the same time to reduce the mixing time has a heater used to heat the fluid in the chamber in the mixing process. This heater in a preferred embodiment, is a means of direct heating capacity. In one embodiment of the present invention, the heaters are electrically isolated resistive elements in contact at least with the bottom of the tank. These elements can be selected from the following elements: at least one heating circuit thick film in contact with the outer surface of the vessel, or the heating resistive elements type shielded resistor in contact with the surface of the container.

Other heating elements can be induction or infrared heating means, or a combination of these tools together with a resistive heating elements.

In a preferred embodiment of the present invention the heating means includes a heating circuit type electrically isolated "thick films", applied directly to the outer surface of the bottom of the tank. This design allows the be increased, the power density on the surface of the vessel and, thus, to reduce the time required to prepare the foam, since the liquid quickly reaches the optimal temperature for foaming, and all this is achieved while eliminating adhesion due to better power distribution.

In order for the device would be easy to maintain and would not require the skills of working with it, the control unit automatically switch off power to the heater and the motor in accordance with a predetermined program. In particular, the control unit contains a temperature sensor mounted on the heater, and the control unit turns off the power to the heater at a temperature below the boiling point, after a certain predetermined time. The program stored in the control unit, is set based on the nature of the liquid (e.g. milk) and volume of the liquid, which should be in capacity, i.e. the volume, the filling level of the tank liquid, the user specifies the label that allows you to obtain the amount of foam of optimum quality in accordance with the established program.

The advantage of the device according to the present invention is that it provides a wireless electrical connecting node that connect the rack and capacity, on the one hand, with the Foundation of the Institute of economy and management, on the other hand, which can be connected to the mains supply. In the hour and the capacity forming part of the foaming unit, can be removed for filling, maintenance and cleaning. To perform this wireless connection node includes a first connector attached to the bottom of the rack, and a second connector attached to the base, both of the connector are electrically connected together to provide power to the rack when the rack is installed on the base.

In accordance with another feature of the present invention is a device for preparing foam from a liquid milk-based, containing a capacitor, which serves whisk the liquid and in which is placed a rotating stirrer, a rack connected with this capacity, the system driving the stirrer, characterized in that the stirrer is set in motion and is retained in the vessel by a magnetic field using the drive system of the stirrer, and the device contains a wireless foaming unit, which is detachable with respect to the base that connects the power supply.

One advantage of this device lies in the mobility foaming unit, which reach by combining the magnetic drive and the wireless power source. It's about legcay hand foam, when the foam is placed, for example, in a mug for preparing cappuccino. In this case, the stirrer is also retained in the vessel and does not fall through the magnetic field, there is no need to remove it from the tank when working with foam. Magnetic elements are selected (size, position, etc. so that the stirrer is charged in the vessel without the risk of fall out when bending capacity with an open hole for leakage of foam.

The present invention also relates to a method for preparing a foam from the food liquid milk-based device containing a capacitor, which serves whisk the liquid and in which is placed a rotating stirrer; means for driving the stirrer; a power source for supplying power to the means of bringing into rotation, characterized in that it includes, inter alia, putting in motion of the stirrer with magnetic fields that are not symmetrical relative to the Central vertical axis of the vessel, and without the coupling element stirrer, passing through the tank.

In the preferred case, the method includes heating the liquid in the vessel with stirring. The heating is performed preferably by means of heating elements and by them distributed direct application to the outer surface of the vessel. It is desirable that the distribution is of the heating elements would be the average power density on the processed surface from 15 to 25 watts per cm 2the heated surface. It is also desirable that the total area of the heated surface coated heating elements would be at least 40%, preferably from 40 to 60%. It is assumed that the direct application of the heating elements associated with the power distribution of the heating elements, will allow us to more quickly get hot foam and at the same time reduce the risk of deposition of solid particles on the bottom of the tank. The output will be stable and hot foam, and at the same time minimized the firm rests on the vessel walls, which ultimately will facilitate cleaning of the device. This method is especially useful for making drinks such as cappuccino, in combination with a coffee maker or coffee maker.

Brief description of drawings

Figure 1 is a perspective view of the device in accordance with the present invention.

Figure 2 is a section along the line a-a of the device shown in figure 1.

Figure 3 is a perspective view of the device shown in figure 1 with the section a-A.

4 is a perspective view with a section along line a-a of the device, in particular containers and racks separately.

5 is a stirrer device.

6 is a stirrer in the section.

Fig.7 is a means of direct heating, installed on the bottom of the tank device.

Fig is a top view of a variant of containers per what Merivale.

Fig.9 is a top view of a variant of the container with tabs for violations of the circulation fluid.

Figure 10 is a section along the line b-variant capacity shown in Fig.9.

Detailed description of the present invention

Device for preparation of milk foam is shown in figure 1. A similar device is used for foam preparation of the food liquid which has the property of emulsification in the combined effect of mechanical stirring and heating, for example dairy products such as fresh milk, pasteurized milk, skimmed milk, semi-skimmed milk or whole milk, milk made from powder and water, or a mixture of milk with some other ingredients, such as coffee.

The device 1 in accordance with the present invention includes a wireless foaming unit 2 and the electric base 3, to which a blowing unit 2 is connected simply by installing it on this basis. Electric base 3 is connected to an electrical outlet using the power cable 30. Wireless foaming unit 2 includes side handle 28, which you can easily take in order to lift and pour the contents after foaming or cleaned after emptying the contents. The unit includes a rack 20 on which is fixed a handle 28 at this hour 28 closed by a removable cap is coy 22. The latter protects the cavity, for example, dust from outside, and also protects the external environment, in particular preventing the liquid spray or foam the unit is switched on under stirring.

Next device will be described in more detail with reference to figure 2 and 3. A blowing unit 2 includes a rack 20, in which is placed the container 21. In the capacity 21 serves fluid which is to be heated and whipped. The container must be sealed and should include sufficient volume of foam to be produced. Basically, these devices are designed to prepare milk foam volume from 50 to 100 cm3you need to prepare one to three servings of cappuccino. However, if necessary, can be provided by the capacity of a larger volume. Of course, the device according to the present invention can also be used for cooking of hot liquid, which does not require mixing or when the tool for this operation is disabled.

Inside the tank stirrer 4. The actuator 5, which serves to bring the stirrer 4 in action in this embodiment is located outside of the vessel, preferably in the space between the container and the cavity of the rack 20. The stirrer 4 and the actuator 5 mounted relative to each other in such a way as to create reinforced PE emiliania liquid inside the tank, without occupying a volume within the tank. For this purpose, the stirrer and the actuator 5 are devices magnetic type, which means that the actuator 5 creates a rotating magnetic field which drives the stirrer, which has a tool, a slave magnetic field. These magnetic means are offset relative to the Central axis "I" tanks, allowing the stirrer rotates, spinning liquid or foam around the axis that is not coaxial with the Central axis of the vessel. In practice, with this design, the liquid and then the foam is twisted in the form of asymmetric cone centered on the axis of the stirrer. This avoids the formation of layers with constant speed, which circulate on the same radius and, therefore, do not mix with each other. In contrast, layers of the same radius are mixed with each other, because they circulate at different speeds, in particular for a given radius layers circulate faster on that side, where the stirrer is most distant from the edge of the tank, and with a lower speed on the other side, where the stirrer closest to the edge. This provides a circular motion all liquid or foam inside the tank, preventing the stagnation layer is hidcote or foam and hence, reducing the area where there is little mixing or no mixing occurs.

To ensure sustainable managed rotation of the stirrer in the tank without the risk of its movement and, consequently, loss of control of the magnetic field has a fixing means 6 located on the bottom 210 of the container and for positioning the stirrer. Locking means located in the vessel offset relative to the vessel axis, but relative to the magnetic field so as to provide rotation of the stirrer. In the shown embodiment, the locking means 6 is a protrusion formed in the vessel wall, which revolves around the stirrer 4 excessive friction. The locking means may have a different configuration and may, for example, be a recess, in which then inserts the part of the stirrer.

One advantage of an external drive is that it is possible to make the capacity in which the host liquid portion and at least its bottom does not contain an attached tube or intermittent connections, or the separation line channels, or the like, which can create areas where there are potential hygienic problems and/or areas that are difficult to clean or rinse. So, the host is idcast the surface in the preferred embodiment, taken as a whole. In accordance with the present invention is not believed to welding, forming a continuous seam between the two elements, forms a connector, or an intermittent connection, and on the contrary, it is believed that the use of screws, rivets or sockets creates a connection or an intermittent connection with associated hygienic problems. In particular, a problem may arise cleaning, if the solid food will get into the joints of the connection. Capacity 21, consisting of a vertical surface 211 and the bottom 210, forms a smooth surface in contact with the liquid, and there are no areas to which stick solid food particles, such as protein or similar. Such capacity may be made of metal, which conducts heat well, such as stainless steel, copper or aluminum. It can be, for example, cast as a whole. In the device shown in figure 4, the container 21 is attached to the edge 200 of the rack 20 with the upper edge 230 by any suitable means, such as welding, soldering, gluing or abimanyu. Capacity can also be installed in a removable way on the rack, so it can be easily removed for cleaning in the dishwasher. On the capacity of the installed cover 22, are Packed tightly along the edge 220 and having an elastic or plastic seal 221. Possible other sredstwa.vlijanie cover 22, such as fastened with screws or spring clips.

As for the drive stirrer, the actuator 5 is installed to create a magnetic field passing through the fixing means 6, which forms a ledge 60 inside the tank. For this purpose, the actuator 5 comprises a magnetic part 50, is placed in the portion forming the recess or dent 61, when viewed from the outer side of the vessel. The magnetic part of the drive contains one or more elements 500, made of ferromagnetic material. The magnetic part 50 of the drive itself is driven into rotation by a spindle 51, connected to the motor 52 located along the axis of the fixing means 6.

To obtain good results in obtaining foam rotation speed of the stirrer is controlled so that it reaches at least 1500 rpm In the preferred case, the rotation speed is at least 1650 rpm, in an even more preferred embodiment, from 1800 to 2500 rpm/min

As shown in figure 5 and 6, the stirrer 4 in accordance with one embodiment of the present invention has the form of a ring freely mounted on acting locking means. The ledge in the preferred embodiment, is made in the form of a cylinder. The stirrer 4 is equipped with a Central hole 40 of a suitable form with internal diameter is D, slightly larger than the outer diameter Do of the outer surface of the protrusion 60. These diameters are chosen in such a way to one another that allow rotation without excessive friction or at least with minimal friction, at the same time providing an efficient magnetic coupling with the drive. The stirrer includes at least one driven magnet part, which is composed of elements made of a ferromagnetic material, such as a pair of magnets 41, 42, placed in a plastic holder 43, which may be molded around the magnets or assembled from several parts 430, 431, by crimping, ligaments, or in any other way. The stirrer has an outer or peripheral part 44, which contains working mixing elements. In the shown embodiment, these elements are in the form of a number of coils 45 of the wire forming the shape of a torus. To prevent deformation of the coils are held in place by means of an internal annular reinforcing element 46. During the rotation of these elements produce a rapid emulsification of liquids, in particular milk, especially when at the same time, the temperature of foaming.

However, instead of the shown options can be used other ways stirrer. They can be the impeller, blade, grating or needles or other.

When electrical energy is the engine, its spindle causes the rotation of the magnetic portion 50 of the actuator, and this creates a rotating local magnetic field that interacts with the magnets 41, 42, causing the stirrer rotates around the ledge. The rotation speed of the stirrer is determined by the speed of rotation of the spindle motor.

In accordance with another distinctive feature of the present invention includes a heater to heat the tank during mixing. The heat helps to create foam and significantly reduces the whipping time. It is preferable to use foam hot, especially for the preparation of the beverage, such as cappuccino. For this purpose, in one embodiment of the present invention there is a means of direct heating capacity. Under the direct heating means, the heating means is a resistive type or equivalent, electrically isolated but thermally directly associated with the surface of the container.

In one embodiment of the present invention a means of direct heating includes a heating circuit type "thick films", applied directly to the external surface of the container, preferably on the outer surface of the bottom of the tank. The advantage of this technology is that it provides a good distribution of the power supplied to the battery pack capacity is (i.e. higher density in watts per square centimeter). As a consequence, prevents the adhesion of the liquid to the surface of the tank, at the same time provides excellent heat transfer to the liquid.

Figure 7 shows an example of the heating circuit of this type printed circuit Board. In one possible embodiment, the circuit is completed directly on the bottom of the tank (for example, as in the variant shown in Fig.7). In another possible embodiment, the circuit is completed across the bottom and along the side walls of the container. In another possible embodiment, there are multiple chains, with at least one of them is at the bottom and at least one is located on the side walls.

Shows the circuit 7 includes an insulating layer 70, associated with the outer side of the heating surface capacitance and resistive thermal print path 71 which, when used with the conductive side facing down. Track 71 is made to provide the total power on the heating surface from about 250 to 1200 watts, preferably 400 watts. This means that the density of electrical power to a heating surface or in the circuit 7 is from 5 to 30 W/cm2preferably from 15 to 25 W/cm2. In a preferred embodiment, the track 71 closes, at least 40% of the heated surface, in a more preferred embodiment, more than 50%, thanks to che who have ensured sufficient distribution of the total capacity of the heated surface, therefore avoiding the adhesion of milk and the formation of the brown shade on the inner surface of the vessel. The average power density is calculated by the formula: average power density = total electric power/total surface area (7).

At the ends of the tracks are electrical contacts 72, 73, 74, serve to attach the electric circuit. In accordance with one embodiment of the present invention, there are three electrical contact connected with three ends; there is one contact 72 connected to the neutral one contact 73 is active and the third contact 74 connected to a low voltage electric motor to power the final required voltage (e.g., 8.2 in the above example). This configuration allows you to apply power from the transformer to the electric motor and, therefore, reduces the cost of the device and to simplify the device. In one possible embodiment of the present invention of the printing heating circuit contains an intermediate protective metal plate that separates the insulation layer from the bottom of the tank. In this case, the cover plate is thin, preferably 1 mm or less. Separating the bottom cover plate may be necessary in the embodiment of the present invention, in which the capacitance C is removable from the rack. However, in the embodiment of the present invention, in which the installed capacity is constantly, it is desirable that the circuit would be printed directly on the container.

Other technologies may be used instead of the heating circuit thick film, for example shielded resistors. However, these technologies are less preferred because the transmission power is not on such a large area (just create power) and because they require additional soldering a resistor directly to the surface of the vessel. As a result, to transmit the same power, the resistor should be overheated, and this creates areas where milk tends locally to adhere to the surface of the vessel. Other heating means contain means of induction or infrared heating. These tools can work in combination or instead of the resistive heating means.

In one embodiment, the present invention provides a temperature sensor used to measure temperature in the tank. The sensor can be attached to the insulated contact 75 of the chain 7 "thick film", preferably near the middle of the bottom of the tank. The sensor may be a sensor NTC-type connected to the electronic controller 8. The sensor could also be a simple sensor in the form of a bimetallic strip, which is what I'm less accurate and gives less duplicate results but does not require electronic control. The contacts of the heater is connected to the controller 8 through the plates, wires and/or other means. When the temperature reaches a specified value, the controller disconnects power to the heater. The preset temperature determined below the boiling point of the liquid, preferably in a temperature range that is optimal for foaming liquids. For example, in the case of milk, the temperature of the liquid reaches a value of from 60 to 80C for 40 seconds, preferably from 63 to 75C for 30 seconds. Of course, the dynamics of growth temperature depends in part on factors such as the amount, which must be heated, and the initial temperature of the liquid.

Hour contains a button 80 enable that user can use. Clicking on this button or activate any other way electric network connected to the heater and the motor torque stirrer. The liquid is subjected to both heating and mixing at the same time. A timer connected to the control unit, automatically turns off the motor. The operating time of the motor is programmed in the control unit depending on the liquid, which should be whipped, and its volume. Milk time is from 30 to 60 seconds. It is desirable that the capacity of them is La would be the label for visual inspection by the user of the level of the poured liquid. The label matches the given liquid level, which should be whipped, and the programmed time, the corresponding optimal foam. For example, a volume of approximately 75 ml of milk can be turned into a stable foam at a temperature of 75C for 30 seconds.

Wireless controlling unit 2 and the electric base 3 is connected via the connector 9, called "wireless" connector. The first connector is connected to the Central bottom of the rack 20. The first connector is connected to the electrical elements and controls controlling unit, in particular the controller, the motor and the heater. The second connector interconnected on the form, associated with an electric base and can be connected to the network using a current-carrying conductor.

The first connector 90 includes electrical terminals, usually neutral, active and earth, located concentrically, which can work in conjunction with the connector of the second connector 91. The first and second connectors are made according to the form such that they can work together when you install controlling unit vertically (or more or less vertically) on the electric base, with electric terminals (active, neutral, earth) of the first connector 90 come into contact with the corresponding electrical wrath is DAMI (active, neutral, earth) of the second connector 91. As an example, such connectors are described in detail in U.S. patent 5971810. The advantage of this system is that in the device according to the present invention can be easily detached controlling unit and clean the tank. In addition, the capacity can be equipped with a heater, which is connected with the capacity to provide the best heating and, consequently, to reduce the time of preparation of the foam. Can be used with other types of wireless connectors, equivalent described and not beyond the scope of this invention.

On Fig shows a variant implementation of the present invention in which the container is cylindrical about a vertical axis 1. In this example, the capacity 21 has an elongated shape with two first convex sides 215, 216 and two second sides 217, 218, arranged at an angle of 90 to the first sides of which are concave. The stirrer 4 and the locking means 6 will now be located in the middle of the tank, as shown in the figure, or can be offset from the middle. The vessel form is such that it creates a turbulent flow of liquid and foam, thus contributing to the rapid formation of foam and reduce the remaining liquid volume.

Figure 9 and 10 shows the other options, the ant implementation of the present invention, in which capacity 21 has a wall and/or obstacles, passing as ledges, offset from the Central vertical axis 1. In particular, in the example at the bottom there are many protrusions 212 that are used to perturbations of the circular motion of the liquid, and similar protrusions 213 on the side walls of the container. These walls are more or less in the radial direction along some parts of the vessel. They are preferably biased to induce the liquid in the tank to move along the winding road. Of course, various equivalent modifications within the competence of the specialists in the art and does not go beyond the scope of this invention.

1. Device for preparing foam from a liquid milk-based or milk containing
the capacity to beat liquid, in which is mounted a rotatable stirrer,
a rack connected to the tank,
the drive for the propulsion of premeditates,
the heating means attached to the vessel, for heating the liquid in the tank, and a control unit for switching the heating means during mixing, the device further comprises a power source for powering the specified drive,
the actuator and the stirrer is designed in such a way that the stirrer is driven with a drive posredstvennoj forces to create foam without mechanical coupling element, passing through the vessel wall,
characterized in that it contains a tool for creating disturbances to interrupt or prevent a symmetric circulation of the liquid around the Central vertical axis of the vessel and contains the drive, creating at least one magnetic field, which is offset from the Central vertical axis of the vessel, and the specified control unit is designed in such a way that actuates the selected drive and through the magnetic coupling causes the rotation of the specified stirrer at high speed for the conversion of the specified fluid to the foam while it is heated.

2. The device according to claim 1, characterized in that the element fixing stirrer, made so as to position the stirrer in connection with the specified actuator along the axis of rotation that is offset from the Central vertical axis of the vessel, so that the stirrer rotating relative to the specified offset of the axis of rotation, creates coaxially circulation of liquid around the specified Central vertical axis.

3. The device according to claim 2, characterized in that the securing element is a protrusion or a recess formed on the inner surface of the container and shaped, more or less corresponding to the shape of the stirrer, so that paramasivam the eh was in the grip with the possibility of rotation.

4. The device according to claim 3, characterized in that the protrusion or the recess and the bottom of the tank together form a single wall.

5. The device according to claim 3 or 4, characterized in that the stirrer has a ring shape with a Central groove, is made to engage the ledge, with the specified protrusion extends from the bottom inside the tank, and the stirrer has at least one driven magnet part located near the periphery of the specified Central groove.

6. The device according to claim 3, characterized in that the actuator comprises a magnetic part which is placed on the outer side of the tank and inside of the ledge in order to communicate at least with the specified slave magnetic part stirrer, while the magnetic part of the actuator is arranged to rotate with the spindle connected to the motor.

7. The device according to claim 6, wherein the stirrer has a peripheral part of the bearing mixing elements.

8. The device according to claim 7, characterized in that the mixing elements consist of one or more of the following elements: turns of wire in the shape of a torus, impellers, vanes, trellises or needles.

9. The device according to claim 1, characterized in that the means of creating perturbations contains the capacity, the configuration of which is not cylindrical relatively Central the vertical axis.

10. The device according to claim 1, characterized in that the means of creating perturbations contains walls and/or other obstacles, passing in the form of tabs in the tank with an offset from the Central vertical axis.

11. The device according to claim 1, characterized in that the means of creating perturbations contains the control unit is programmed to switch the direction of rotation of the stirrer several times during the foaming liquid.

12. The device according to claim 1, characterized in that the surface of the receiving fluid from the vessel contains at least the bottom and raised edges made as a single unit.

13. The device according to item 12, characterized in that the surface of the fluid intake has no joints or fault lines and any lines of delimitation of the path.

14. The device according to claim 1, characterized in that the heating means includes an electrically isolated resistive heating elements in contact at least with the bottom of the tank.

15. The device according to 14, characterized in that the heating means comprises at least one heating circuit thick film in contact with the outer surface of the container.

16. The device according to 14, characterized in that the heating means comprises a resistive heating element type shielded resistor con is asterousia with the wall, or induction or infrared heating means, or a combination of these means.

17. The device according to claim 1, characterized in that it contains a wireless electrical connecting node providing a connection from one side of the rack and capacity and on the other side of the base for supplying power, which can be connected to the mains.

18. The device according to 17, characterized in that the wireless connection node includes a first connector attached to the bottom of the rack, and a second connector attached to the base for supplying power, both of the connector are electrically connected together, providing power to the rack when the rack is installed on the base.

19. The device according to claim 1, characterized in that the control unit contains a temperature sensor associated with the heating means, and the control unit turns off power to the heating means at a set temperature, which is defined so that the liquid is heated below the boiling point of the liquid within the prescribed time.

20. Device for preparing foam from a liquid milk-based or milk containing
the capacity to beat liquid, which has a rotating stirrer,
a rack connected to the tank,
system drive the stirrer,
heating means attached to the vessel for heating the liquid in the tank, and a control unit for switching the heating means during mixing,
while the drive system of the stirrer and the stirrer contain magnetic elements so that rotation of the stirrer in the tank due to the magnetic coupling,
characterized in that the drive system of the stirrer and the stirrer are offset relative to the Central vertical axis of the vessel so as to prevent the symmetric circulation of liquid in the vessel around the Central vertical axis of the tank, and heating means distributed in such a way as to heat the bottom of the tank.

21. Device for preparing foam from a liquid milk-based,
contains
wireless controlling unit including:
the capacity to beat liquid
placed in the vessel rotating stirrer and
the magnetic drive system for driving the stirrer
and its retention magnetic field,
while specified controlling unit configured to split a wireless connection to the AC power supply.

22. Method of preparation of foam from the food liquid milk-based device that contains
the capacity to beat liquid that hosts rotating PE emediately;
magnetic means for driving the stirrer without entering through the wall of the coupling element of the stirrer;
a power source for supplying power to rotate the actuator, characterized in,
what this method contains, among other things, bringing into rotation by means of magnetic coupling stirrer around an axis of rotation that is offset from the Central vertical axis of the vessel, and with a sufficiently high speed to turn the liquid into foam and liquid heating during mixing.

23. The method according to item 22, wherein the heating is performed by direct and distributed application of the heating elements to the outer surface of the container.

24. The method according to item 23, wherein the distribution of the heating elements provides a density of electrical power to the heated surface from 15 to 25 W/cm2when the coverage area of the heating elements of the heating surface, at least 40%.

25. The method according to any of PP-24, characterized in that the stirrer is put into rotation with a speed of at least 1500 rpm



 

Same patents:

FIELD: personal use daily items, household appliances.

SUBSTANCE: invention relates to household appliances for pretreatment of food. The household appliance for pretreatment of food consists of a body frame. The body frame contains a base. A working vessel is fixed on the base. The body frame has a driving motor of rotating tool built in the bottom of the working vessel. The working vessel can be removed from the base and has a handle. The base has fasteners. The fasteners contact with the handle of the vessel to fix the working vessel on the base along the axis of rotation and displacement.

EFFECT: providing simple fixation of the vessel on the base.

13 cl, 3 dwg

FIELD: physics.

SUBSTANCE: device for treating food products consists of a driving shaft, a tank for food products, drive plate and an electric motor. The container consists of an element, made with provision for rotation and is linked to the driving shaft. The drive plate is made from magnetisable material and is linked to the driving shaft, providing for their combined rotation. The electric motor has a rotor, starter and a propulsion magnet. The rotor has a rotor magnet, which has an inner surface facing the motor shaft. The starter generates a magnetic field, which interacts with the rotor magnet. The starter has an outer surface, facing the opposite side of the motor shaft. Part of the inner surface of the rotor magnet faces the outer surface of the starter. The propulsion magnet is linked to the rotor magnet to provide for their combined rotation. The device has a bushing, made from plastic and mounted with possibility of rotating on the shaft of the electric motor. The propulsion magnet and the rotor magnet are joined by a bushing and are at its opposite sides.

EFFECT: reliable power transmission.

28 cl, 15 dwg

FIELD: items of personal use.

SUBSTANCE: invention refers to the bowl node for a mixer or blender with a bowl and bowl support that is installed on the bowl by means of the connection unit. Between the bowl and the bowl support there is a fixing device stipulated by which means the connection unit is fixed in the installed position.

EFFECT: increase of reliability and convenient use of a blender.

5 cl, 2 dwg

The invention relates to household appliances for baking

The invention relates to a device for processing food type food processor with a base that has at least two separate attachment, each for one tank, in which lay the processed product, with one driving element for each of the attachment points associated functionally with the motor, and with a locking device for containers in each node mounts

Mixer // 2043749
The invention relates to the trade mechanical engineering and can be used for mixing liquid products

FIELD: items of personal use.

SUBSTANCE: invention refers to the bowl node for a mixer or blender with a bowl and bowl support that is installed on the bowl by means of the connection unit. Between the bowl and the bowl support there is a fixing device stipulated by which means the connection unit is fixed in the installed position.

EFFECT: increase of reliability and convenient use of a blender.

5 cl, 2 dwg

FIELD: physics.

SUBSTANCE: device for treating food products consists of a driving shaft, a tank for food products, drive plate and an electric motor. The container consists of an element, made with provision for rotation and is linked to the driving shaft. The drive plate is made from magnetisable material and is linked to the driving shaft, providing for their combined rotation. The electric motor has a rotor, starter and a propulsion magnet. The rotor has a rotor magnet, which has an inner surface facing the motor shaft. The starter generates a magnetic field, which interacts with the rotor magnet. The starter has an outer surface, facing the opposite side of the motor shaft. Part of the inner surface of the rotor magnet faces the outer surface of the starter. The propulsion magnet is linked to the rotor magnet to provide for their combined rotation. The device has a bushing, made from plastic and mounted with possibility of rotating on the shaft of the electric motor. The propulsion magnet and the rotor magnet are joined by a bushing and are at its opposite sides.

EFFECT: reliable power transmission.

28 cl, 15 dwg

FIELD: personal use daily items, household appliances.

SUBSTANCE: invention relates to household appliances for pretreatment of food. The household appliance for pretreatment of food consists of a body frame. The body frame contains a base. A working vessel is fixed on the base. The body frame has a driving motor of rotating tool built in the bottom of the working vessel. The working vessel can be removed from the base and has a handle. The base has fasteners. The fasteners contact with the handle of the vessel to fix the working vessel on the base along the axis of rotation and displacement.

EFFECT: providing simple fixation of the vessel on the base.

13 cl, 3 dwg

FIELD: food industry.

SUBSTANCE: device for foam preparation from liquid based on milk or out of milk contains a tank into which whipped liquid is supplied and in which there is a rotatable stirrer, rack connected with the tank and stirrer driving gear system. Stirrer driving gear system and the stirrer contain magnetic elements ensuring rotation of the mixer under influence of magnetic field in the tank. There are means of creating agitations disturbing or preventing symmetrical circulation of the liquid around the central vertical axis of the tank.

EFFECT: invention simplifies method of foam preparation owing to restricting amount of operator's actions.

25 cl, 10 dwg

FIELD: personal use articles.

SUBSTANCE: invention relates to household appliances. The kitchen machine with a junction section for connection of the processing unit, a cover which is fixed to the body of the kitchen machine so that it, from the closed position in which it closes the junction section, has the ability to turn into an open position in which the junction section is available for connecting the processing unit. Also, the device includes a locking device designed to lock the cover in the closed position, with the releasing button, which by pressing has the ability to move from resting position into the position of disconnecting to release the lock, with the result that the cover has the ability to rotate to the open position. The releasing button is located on the cover, and the cover has a locking element, and the body has a lock pin made with an ability to interact with the locking element to lock the cover in the closed position. At that, the releasing button has an unlocking site which interacts with the locking element so that in the disconnecting position it disconnects the locking element and the lock pin.

EFFECT: invention enables to provide quick and convenient control of the device of releasing the cover.

8 cl, 5 dwg

FIELD: personal use articles.

SUBSTANCE: device (1) for cooking food such as baby food contains a vessel (3) for receipt of food to be cooked, a mixing unit containing a mixing element (10) for mixing the food and a heating device designed so that to enable the food heating. The first end (4) of the vessel (3) is designed so that to enable interaction with the heating device for the food heating. The mixing element (10) is positioned at the opposite second end (5) of the vessel (3) so that during usage the vessel (3) orientation relative to the device (1) may be adapted for switching between heating and mixing operations. The first end (4) of the vessel (3) contains the first connective element (6) to ensure fluid medium communication between the inner part (3a) of the vessel (3) and the heating device so that steam generated for the food heating can be supplied into the inner part (3a) of the vessel (3). Positioned at the first end (4) of the vessel (3) is a sump for collection of fluid medium during the heating operation. The fluid medium sump is positioned between the inner part (3a) of the vessel (3) and the first connective element (6).

EFFECT: ensuring the food product efficient preparation and mixing, simplicity and hygienic purity in usage.

10 cl, 7 dwg

FIELD: personal use articles.

SUBSTANCE: kneading device (101) for dough kneading includes a kneading tool (106), a drive unit (DU) for rotation of the kneading tool round the central axis, a vessel (104) to accommodate the kneading tool (106) and a base supporting the vessel (104). The kneading tool (106) contains a central body (107), a stirring blade (108) and at least one scraper (109) extending axially and radially. The distal end of the said scraper has a variable distance to the opposite inner side of the vessel. The said variable distance increases in the direction from the vessel bottom towards the upper part.

EFFECT: ensuring improvement of the kneading process and the kneading device cleaning ease.

9 cl, 20 dwg

Kitchen device // 2505262

FIELD: personal use articles.

SUBSTANCE: kitchen device is described, comprising a base having a supporting surface on its upper part, and a rotatable drive shaft comprising a first connecting part at its free end. The device comprises a removable container comprising a lower part which is supported by the support surface during operation, and a connecting element supported by the said lower part. The element comprises a second connecting part for connecting with the first connecting part. The first connecting part comprises a head with an outer surface with a number of first sloped parts. The second connecting part comprises a socket for receiving the head, the socket has an inner circumferential surface with a number of second sloped parts, the said first and second sloped parts comprise respectively the first and second sloped surfaces which are connected together in placement of the head into the socket.

EFFECT: ease and reliability of fastening is provided, and ease of cleaning of different parts comprised in the kitchen device.

15 cl, 9 dwg

FIELD: personal use articles.

SUBSTANCE: invention relates to the blender cover and its method of operation. The cover which is made with the ability to secure on the container comprises an upper wall, a side wall extending downwardly from the said upper wall, and one guide rib extending downwardly from the said upper wall and inwardly away from the said side wall. The method of minimising the swirling motion that occurs in the blender container having an open upper part, according to which the open upper part of the container is covered with the cover, thus placing one guide rib which is supported by the cover on the swirling motion trajectory.

EFFECT: reduction of swirling motion in the container.

15 cl, 3 dwg

FIELD: personal use articles.

SUBSTANCE: kitchen appliance (1) with a connective plate (5) for the treatment vessel (6); the connective plate (5) brim is equipped with connective (7) of the connective device intended for detachable connection of the vessel (6); envisaged within the inner area of the connective plate (5) surrounded by the brim is either a rod (12), projecting in the connection direction and capable of engagement with the slot (13) in the bottom part (10) of the vessel (6), or a slot (13) that the rod (12) projecting from the bottom part (10) of the vessel (6) in the connection direction may engaged with.

EFFECT: improvement of the kitchen appliance and of the treatment device enabling exclusion of the treatment vessel connection to the kitchen appliance while in an incorrect position with the solution implemented by a simple and low-cost method without impeding the user's actions.

14 cl, 6 dwg

Up!