Device for producing a personal care product, a cosmetic, or a household product

Abstract

The invention relates to a device for producing a personal care product, a cosmetic, or a household product from at least two predefined components in a household-typical, ready-to-use quantity. In order to produce such small quantities efficiently, carefully and simply, the device comprises: • ■ a container (1.1.) for holding the components, which container is accessible from one side and has a container bottom, • ■ a heating device (1.5., 3.7., 50.5) for heating the components introduced into the container, which heating device surrounds the outside of the container, is adapted to the outer shape of the container, and is in contact with the container, and • ■ an insert (2) which can be positioned inside the container close to the container bottom, wherein the insert comprises a perforated stirring cage (2.6., 50.6) which can be fixed in a predefined position relative to the container and / or is rotatable, and a magnetic stirring body (2.5) which can be rotated relative to the stirring cage about an axis of rotation (3), wherein the stirring cage encloses at least part of the magnetic stirring body, wherein the magnetic stirring body, in cooperation with the stirring cage and at least partially with the heating device, is designed to homogenise, disperse, emulsify, soften, melt and / or comminute the components introduced into the container and can be driven via a magnetic or electromagnetic field penetrating the container wall in such a way that said magnetic stirring body rotates toward the container bottom, for example by means of a magnetic or electromagnetic drive body (1.7) that can be moved by a motor (1.8.) arranged adjacent to the container bottom, or by means of a coil assembly that is provided adjacent to the container bottom and has a plurality of electromagnetic coils (50.7). The invention also relates to a method for producing a body care product, a cosmetic, or a household product using such a device.

Description

[0001] Device for producing a personal care product, cosmetic or household product

[0002] DESCRIPTION

[0003] The invention relates to a device for producing personal care products, cosmetics or household products, which is to be used in particular for the production of household-typical, non-industrial, ready-to-use quantities.

[0004] When stirring and mixing in the home (i.e. for private use, not industrially), the state of the art usually involves using a permanently installed agitator that is directly connected to the motor by means of a drive shaft that projects into the stirring vessel. The agitators used usually consist of an arrangement of blades that break up coarse components or mix liquids of different densities. This is described, for example, in the document DE 10053319 A1. However, such agitators are not suitable for dispersing smaller product quantities of the order of 50 ml, since components of the product being manufactured regularly stick to the rigidly installed agitator, the high rotation speed finely distributes product particles in the vessel and, in particular, high centrifugal forces stick to the wall of the stirring vessel so that they cannot be mixed further.This results in significant losses for small product quantities, meaning that a significantly larger quantity of product must be produced to achieve the desired product quantity.

[0005] Another problem arises, especially when the final product becomes very thick due to cooling in the mixing vessel. This requires removing the stirring tool at a certain point while the product is still liquid. This is not possible with a permanently installed agitator.

[0006] From US Pat. No. 10,631,686 B1, a mixing device for foodstuffs is known which uses a magnetically driven stirring device. This device has a base that creates the transition between the stirring device and the magnetic drive, as well as a distance. Waxes or thermolabile substances are also frequently used in the production of body care products, cosmetics, or household products, which require gentle heating. If, as stated in document DE 100 19 126 A1, a resistance heating element with conductor tracks applied to a dielectric is provided on the bottom of the mixing vessel, which causes relatively localized heating, gentle heating cannot be achieved to a sufficient extent in all cases. Localized heating can lead to denaturation of the substances being processed.To avoid such effects, water baths are used in the laboratory or at home, but these are complex and unwieldy to use in the home.

[0007] The object of the present invention is therefore to provide a device for producing personal care products, cosmetics or household products or to provide a corresponding method which eliminates or at least reduces the above problems.

[0008] The above object is achieved by a device having the features of claim 1 and a method having the features of claim 12.

[0009] In particular, the object is achieved by a device for producing a personal care product, cosmetic or household product from at least two predetermined components, wherein the device

[0010] • a container accessible from one side to hold the components with a container bottom,

[0011] • a heating device surrounding the outside of the container, adapted to the outer shape of the container and attached to the container for heating the components introduced into the container and

[0012] • an insert that can be arranged within the container near the container bottom, wherein the insert has a stirrer cage that can be fastened and / or rotated and perforated in a predetermined position with respect to the container, and a magnetic stirrer body that can be rotated about a rotation axis relative to the stirrer cage, wherein the stirrer cage at least partially surrounds the magnetic stirrer body, wherein the magnetic stirrer body, in cooperation with the stirrer cage and at least partially with the heating device, is designed to homogenize, disperse, emulsify, soften, melt and / or comminute the components introduced into the container and is drivable via a magnetic or electromagnetic field penetrating the container wall in such a way that this magnetic stirrer body rotates relative to the container bottom, for example by means of a magnetic element that is movable by a motor arranged adjacent to the container bottom,or by means of a coil arrangement provided adjacent to the container bottom with a plurality of electromagnetic coils.

[0013] Using the device specified above, a personal care product, cosmetic, or household product for use in a household can be produced. For this purpose, the device homogenizes, disperses, emulsifies, softens, melts, and / or comminutes at least two predetermined components (substances) in the container. The personal care product, cosmetic, or household product (hereinafter referred to as the "product") can be produced from solid components (including gels), powdered components, and / or liquid components, with any combination of such component types being possible. A further advantage of the device is that, due to its low weight and small dimensions, it can be moved easily and without additional aids, making it portable.Another advantage of the device according to the invention is that, due to the drive of the magnetic stirrer body (described in more detail below) and the interaction with the stirrer cage, the rotation speed of the magnetic stirrer body can be lower compared to stirring devices in conventional devices. This has a positive effect, for example, on the service life of the magnetic stirrer body. The magnetic stirrers can have various designs and sizes, as described below, which has the advantage that the magnetic stirrers can be exchanged depending on the quantity and nature of the components to be processed. Smaller magnetic stirrers can be used, for example, for small quantities of personal care products, cosmetics, or household products, and larger ones for large quantities.

[0014] In this case, a personal care product is understood to mean, for example, a cream, a body lotion, a shampoo, a conditioner and similar products; a cosmetic is understood to mean, for example, rouge, nail polish, lipstick and similar products; and a household product is understood to mean, for example, any type of cleaning agent used in the household, a room fragrance or similar products.

[0015] The container, into whose interior the components for producing the product can be introduced, has a rigid, solid shape, for example a hollow cylinder, with a wall and a base closing the bottom of the container. Since the magnetic stirrer body in the container rotates about a rotation axis relative to the stirrer cage for producing the product, a container which has a rotationally symmetrical interior (e.g. a cylindrical interior) is advantageous. The container can have a cylindrical wall which runs vertically, or a substantially cylindrical wall with further annular structures (e.g. annular segment-shaped notches or protrusions). In one embodiment, the container is open on the side opposite the base so that the components can be introduced into this opening.This opening provides access to the container and can be permanently, temporarily, or partially closed, for example, with a lid. In one embodiment, the inner side of the wall merges into the upper side of the base, with the inner side of the wall and the upper side of the base forming the interior of the container.

[0016] In one embodiment, the container (stirring container) consists, for example, of at least one material from the group of materials comprising glass, aluminum, aluminum alloy, Teflon, stainless steel, and ceramic. In particular, glass can be advantageously used as a stirring container. This material allows for very good assessment of the product during production. The use of this material is possible because the magnetic drive eliminates the need for a direct connection to a drive motor via a shaft.

[0017] The outside of the container is formed by the outside (outer surface) of the wall and the underside of the base. The heating device is designed to match the external shape of the container in order to establish good contact with the container and the components to be processed arranged in the container. For example, the heating device can at least partially have the shape of a hollow cylinder, wherein the heating device lies closely against the outside of the container, in particular is in direct contact with the outer surface of the container in order to achieve good heat transfer directly to the material of the container. The heating device surrounds the outside of the container completely or over at least 50% of the outer surface in order to achieve a uniform temperature distribution.The heating device can surround the wall or both the wall and the base, wherein in one embodiment the heating device can be arranged (e.g. glued) directly (for example as a heating wire, e.g. copper wire, or heating foil) on the outer surface of the wall and / or the underside of the base of the container. Optionally, the heating device has at least one through-opening (e.g. a through-slot) through which a temperature measuring element can measure / monitor the temperature of the container and / or the temperature of the components arranged in the container. For this purpose and for a good and rapid realization of a predetermined temperature profile, the wall of the container consists of or contains a material with good thermal conductivity, wherein the material comprises at least one material from the group comprising glass, aluminum, aluminum alloy, Teflon, stainless steel and ceramic.The heating device serves to bring the components to a predetermined temperature (i.e. to heat or cool them) so that optimal homogenization, dispersion or emulsification of the components can be achieved. The heating device can be set up in such a way that it can implement at least one predetermined temperature profile which includes an increase in temperature, a maintenance of temperature and / or a reduction in temperature, in each case over a predetermined period of time. The structure of such a heating device is explained in more detail below. Furthermore, the device has an insert which can be arranged within the container close to the container bottom, wherein the insert is arranged close to the container bottom. For example, the distance between the lower end of the insert and the container bottom is a maximum of 1 cm, preferably a maximum of 5 mm, wherein the insert can also be arranged directly on the container bottom without any distance.The insert can be inserted and removed through the opening of the container. Furthermore, the insert can be attached (fixed) to the container in such a way that it can at least temporarily assume a predetermined position in relation to the container. The insert can extend from the position near the bottom to the region of the upper edge of the container by means of the rod assembly and / or chassis described below and / or at least two connecting struts (for example, three connecting struts), so that the magnetic stirrer body and stirrer cage have access above / outside the vessel. The rod assembly, chassis, or connecting struts are, for example, connected to the stirrer cage or formed integrally with it. In one embodiment, a handle can be provided at an upper end of the chassis, rod assembly, and / or connecting struts protruding from the container, on which end a holding element can be arranged.This means that the magnetic stirrer body and stirrer cage can be removed without having to reach into the vessel or device. Since the entire stirring system is thus accessible from the outside, contamination of the body care product, cosmetic or household item by germs in the user's skin flora is avoided. Alternatively or temporarily, the insert can rotate relative to the container, whereby the magnetic stirrer body and stirrer cage can rotate individually or simultaneously relative to the vessel and / or in the same or opposite direction of rotation to each other. The insert can be attached to the container permanently or detachably, e.g. by means of a locking element (locking slide) which can be moved from an open (unlocked) position to a locked position in a handle arranged on the container or connected to the stirrer cage.In the locking position, the locking element can be positively connected to the container. In the open position, the insert can rotate in the container, thus improving the stirring performance when the stirring container is full. In one embodiment, the stirring cage and / or the stirring cage and the chassis firmly connected to the stirring cage and / or the rods firmly connected to the stirring cage and / or the at least two connecting struts firmly connected to the stirring cage are designed to be rotatable relative to the container.In a further embodiment, a retaining element, for example an annular one, rotates with the stirrer cage and the chassis and / or rods and / or at least two connecting struts. Said retaining element is arranged in an axial direction of the insert at the end of the insert opposite the stirrer cage and may, for example, have a collar that rests on the edge of the container, relative to the container, since it is, for example, firmly connected to the chassis and / or the rods and / or the at least two connecting struts. In contrast, the insert, in particular the stirrer cage with the chassis / rods / at least two connecting struts optionally attached to the stirrer cage and the retaining element optionally attached to them, is fastened in the locking position in the container and is therefore not movable relative to the container, although the magnetic stirrer body can rotate relative to the stirrer cage (and the container).In one embodiment, the chassis and / or the rods and / or the at least two connecting struts can be designed to be torsionally rigid. The chassis and / or the rods and / or the at least two connecting struts can be connected, for example, at their upper end opposite the insert to the holding element, for example to a rubber adapter, which is inserted into the container and forms, for example, a clamping connection with the upper end of the container opening. The holding element can, for example, have a stop surface / collar that rests on the upper edge of the container opening when the insert is fully inserted into the container. In this position, the rubber adapter can bear against the upper end of the inner wall of the container in a press fit, so that the insert is secured.In one embodiment, the rubber adapter can be provided with a bellows seal so that forces transmitted from the magnetic stirrer body via the chassis to the holding element can be absorbed. Furthermore, the holding element can be closed at the top with a lid.

[0018] According to the invention, the insert comprises a stirrer cage and a magnetic stirrer body, wherein the magnetic stirrer body is rotatable about a rotational axis running relative to the stirrer cage. For this purpose, the stirrer cage can, for example, have a protruding mandrel or a similar pivot bearing, which can be arranged in a corresponding opening in the magnetic stirrer body (and optionally fastened in such a way) that the magnetic stirrer body can rotate about the constant rotational axis formed by the mandrel. Alternatively, the magnetic stirrer body can also rotate without being mounted on a mandrel, i.e., for example, freely and relative to the stirrer cage and perform a rotational movement with a constant rotational axis or with a changing rotational axis (wobbling movement).The magnetic stirrer body is driven contactlessly by a correspondingly rotating magnetic or electromagnetic field penetrating the container wall, which can be generated below the container, for example, by an electric motor and a magnetic or electromagnetic drive body connected to the electric motor. The magnetic or electromagnetic drive body is arranged outside the container and generates the rotating (electro)magnetic field, which drives the magnetic stirrer body within the container. Alternatively, a coil arrangement arranged adjacent to the container bottom and comprising a plurality of electromagnetic coils can be provided. The coil arrangement can rotate or be fixed to the device.In the latter variant, the rotating (electro)magnetic field for driving the magnetic stirrer body is generated by appropriate excitation of the electromagnetic coils, whereby the coils can be arranged, for example, in the form of a circular ring. In both cases, a movement relative to the stirrer cage is generated. A drive axis penetrating the container bottom, as in the rigid drives described above, is therefore not required. The axis of rotation of the magnetic stirrer body can, for example, run in a vertical direction if the container is set up in the specified manner. The magnetic stirrer body has at least one permanent magnet (e.g., in rod form), which is formed integrally with the magnetic stirrer body or can be introduced into a corresponding, closable recess in the magnetic stirrer body.This permanent magnet is driven by the externally applied electromagnetic or magnetic field penetrating the container bottom. The stirrer cage has a perforated structure and at least partially surrounds the magnetic stirrer body. For example, the stirrer cage has a circular disk-shaped base with through-openings, wherein the base is arranged between the magnetic stirrer body and the container bottom. The stirrer cage can further have at least one edge designed such that these are arranged in a region surrounding the magnetic stirrer body with respect to the rotation axis. This edge can, for example, be formed on projections that protrude from the stirrer cage parallel to the rotation axis of the magnetic stirrer body, for example, projecting upwards from the circular edge of the base (parallel to the rotation axis). These projections can, for example, be formed by a corresponding collar.

[0019] By using an easily movable magnetic stirrer, the use of a rigid stirrer with blades that is directly connected to the motor is eliminated. This reduces product material loss. A further advantage is that the insert and thus the magnetic stirrer can be removed from the container at the right time to save product, for example, while the product is in a liquid state. Such a magnetic stirrer is usually completely covered by the product material (components), thus achieving a reduced "splash effect" and thus less product loss. In addition, the stirrer cage provides guidance and a certain limitation for the movement of the magnetic stirrer, so that the rotation of the magnetic stirrer advantageously proceeds in a defined manner and can therefore also be controlled in a defined manner.In this way, medium product quantities and especially small and very small product quantities (e.g. in the order of 30 ml to 200 ml) can be produced.

[0020] In an embodiment already described above, the agitator cage and optionally the chassis and / or rods and / or the at least two connecting struts and optionally the holding element can rotate relative to the container, at least in a corresponding mode (e.g., in an open or unlocked position of the handle). The rotation of the agitator cage with the components attached thereto is advantageous for homogenizing, dispersing, emulsifying, softening, melting, and / or comminuting, in particular, components introduced into the container that have a higher viscosity from the beginning or during production. The rotation can, for example, be carried out at a maximum speed of 1000 min -1 or 500 min -1 or 400 min-1 or 300 min -1 or 250 min -1 The use of such a maximum speed has proven to be useful for effective homogenization, dispersing, emulsification, softening, melting and / or comminution of such components introduced into the container. The speed of the stirrer cage and the elements attached to it can be determined, for example, by means of a proximity sensor arranged above or in the region of the upper edge of the container and which, for example, monitors a marking on the chassis and / or rods and / or on one of the at least two connecting struts or on the holding element (optionally on its handle). In one embodiment, the magnetic stirrer body and the stirrer cage as well as the elements connected to the stirrer cage can rotate in the same direction or in the opposite direction.

[0021] Furthermore, according to the invention, the interaction of the magnetic stirrer body with the stirrer cage surrounding the magnetic stirrer body enables particularly effective homogenization, dispersion, emulsification, softening, melting, and / or comminution of the small amounts of components introduced into the container at a comparatively low rotation speed of the magnetic stirrer body. This is based on the fact that the rotation of the magnetic stirrer body causes the components to move centrifugally outwards or towards the container bottom. This drives them towards the stirrer cage, the structure of which represents an obstacle to movement and thus particularly supports the homogenization, dispersion, emulsification, and / or comminution of the components. The melting and / or softening of the components is also facilitated by the homogenizing effect of the stirrer cage.

[0022] In one embodiment of the device, as already described above, the stirring cage has at least one edge arranged in a region that radially surrounds the magnetic stirring body with respect to the rotational axis of the magnetic stirring body. The at least one edge can be blunt or blade-like, wherein the edge can extend partially or completely around the magnetic stirring body in the circumferential direction at a predetermined radial distance from the magnetic stirring body. The at least one edge can have a profile on its upper side that promotes comminution of the components. For example, the edge can have a wave-shaped profile.In one embodiment of the device, the edge is formed on projections that project in a direction parallel to the axis of rotation, for example a collar that extends upwards (towards the container opening) from an outer edge of a circular ring-shaped bottom disc of the agitator cage.

[0023] In one embodiment of the device, the stirrer cage has at least two through openings, which are arranged, for example, in the bottom of the stirrer cage between the magnetic stirring element and the container bottom. The openings can be arranged, for example, between spoke-shaped elements of the stirrer cage and have, for example, a triangular cross-section. The spoke-shaped elements can, for example, in the region of the bottom of the stirrer cage, connect the mandrel for the rotation axis of the magnetic stirring element to a ring-shaped element forming the edges. This further promotes the homogenization, dispersing, emulsification, and / or comminution of the components.

[0024] In one embodiment of the device, the stirrer cage has a surface structure, such as ribbing or knobs, on the surface opposite the magnetic stirrer body, so that the magnetic stirrer body can interact better with this surface and cause the stirrer cage to rotate. This interaction can be provided in particular for the case where the magnetic stirrer body is arranged without a connection to the stirrer cage, i.e., without a pivot bearing relative to the stirrer cage.

[0025] In one embodiment, the agitator cage and / or the chassis and / or rods optionally connected to the agitator cage and / or the at least two connecting struts have a structure at their lower end on a surface opposite the bottom of the container, which also enables better sliding of the agitator cage and / or the chassis and / or rods optionally connected to the agitator cage and / or the at least two connecting struts. Such a structure could, for example, be a circular disk-shaped projection with a flat end face.

[0026] In one embodiment, the drive for the rotation of the agitator cage and / or the chassis and / or rods optionally connected to the agitator cage and / or the at least two connecting struts and the optionally connected holding element is provided by means of electromagnetic coils arranged on the outside of the container, e.g., at its upper end. Accordingly, the agitator cage and / or the chassis and / or rods optionally connected to the agitator cage and / or the at least two connecting struts and / or the optionally connected holding element have at least one magnetic element (e.g., a permanent magnet), so that the agitator cage and / or the elements connected to the agitator cage are rotated, for example, analogously to the rotor of a synchronous motor.Alternatively, a rotating movement of the agitator cage and / or of the chassis and / or rods optionally connected to the agitator cage and / or of the at least two connecting struts and the optionally connected holding element can be effected by means of the magnetic agitator body, which is in a force-locking connection (friction effect) with surfaces of the agitator cage (e.g., the surface of a center circular disk element facing the magnetic agitator body or the spoke-like struts of the agitator cage) and thereby at least partially entrains the latter in the rotational movement. In one embodiment of the device, the magnetic agitator body has at least one agitator blade extending obliquely and / or parallel to the axis of rotation, and / or at least one rod-shaped element extending parallel to the axis of rotation. The agitator blade can be designed as a straight or slightly curved or curved element, which is blade-like on at least one side edge.For example, at least two side edges of the impeller are blade-shaped. Furthermore, the impeller can protrude / project away from the magnetic stirrer body in the direction of the rotation axis and / or in the radial direction (relative to the rotation axis), wherein the projection is dimensioned such that the magnetic stirrer body rotates in the stirrer cage. The shape of the impeller can promote a movement of the components in the direction of the stirrer cage, for example, a flow towards the bottom of the stirrer cage. The impeller can also be designed such that larger pieces contained in the components are crushed between the impeller and the collar as the magnetic stirrer body rotates. The additional structure of the impeller, through its shape and edges, further improves the homogenization, dispersion, emulsification, softening, melting, and / or comminution of the components introduced into the container.Furthermore, the shape of the impeller can be designed such that it exerts a force toward the bottom of the container, so that the magnetic stirrer is pushed toward the bottom of the container when it performs the magnetically driven rotational movement for homogenizing, dispersing, emulsifying, softening, melting, and / or comminuting the components introduced into the container. This eliminates the need for separate fastening of the magnetic stirrer in the stirrer cage, and the magnetic stirrer is easier to remove after the product has been manufactured. In particular, the force toward the bottom of the container is exerted by surfaces on the magnetic stirrer that run obliquely downwards in the circumferential direction, opposite to the direction of rotation, i.e., toward the bottom of the container. The magnetic stirrers can thus be inserted and replaced simply by freely inserting them into the stirrer cage, without the use of a locking mechanism.Opening / locking is not necessary, as the magnetic stirrer body stabilizes itself downwards thanks to the aquadynamically designed impellers. The rod-shaped element can protrude from the side of the magnetic stirrer body facing away from the tank bottom when installed and can run essentially parallel to the rotation axis. The rod-shaped element ensures good homogenization of the components even with large component quantities.

[0027] In one embodiment of the device, the container has a substantially cylindrical outer surface. In addition, the heating device is designed in multiple layers and is at least partially in the shape of a hollow cylinder, on one of the inner layers of which a dielectric heating element is arranged, which is covered towards the outside with at least one insulation layer which consists at least partially of silicone foam and / or ceramic wool, wherein the insulation layer can have a thickness of at least 1 cm, e.g. at least 2 cm. The layer with silicone foam is also referred to as a silicone mat. Further layers of the heating device can comprise ceramic wool, Teflon, glass fiber fabric, carbon fiber and a layer for shaping made of plastic or metal.The insulation element provides good thermal insulation of the heating device from the outside, while the dielectric heating element enables targeted temperature adjustment of the components arranged in the container. The dielectric heating element can be designed, for example, in the form of serpentine or meander-shaped heating wires attached to a plastic film. A thin Teflon film can be provided on the inside of the plastic film to prevent the heating device from directly adhering to the outside of the container. Therefore, in relation to the present invention, "inner layer" means a layer arranged further inside, whereby this layer represents the innermost layer or a layer located further inside than outside.Such a heating element heats the components inside the container over a large area, as the high flexibility of the material means that more than 50% of the container's surface is tightly enclosed, thus avoiding localized heat. The inner diameter of the heating device in this area corresponds to the outer diameter of the container to ensure that the heating device fits snugly against the container. Alternatively, the heating device can be arranged (e.g., glued) directly on the outer surface of the container wall and / or the underside of the container base. In this case, the heating device can be designed, for example, as a dielectric heating element in the form of serpentine or meander-shaped heating wires attached to a plastic film.

[0028] In one embodiment of the device, it has an (optical) infrared temperature measuring element (pyrometer) arranged in a through-opening of the heating device and configured to measure the temperature of the components arranged in the container. The temperature measuring element is advantageously capable of measuring the temperature of the components arranged in the container without contact, so that any influence on the components is minimized. In addition, such a temperature measuring element requires only a small installation space, which can be realized by the described through-opening in the heating device, which approximately corresponds to the external dimensions of the temperature measuring element. The temperature measuring element can, for example, be arranged such that it detects the temperature of the components in the region of the stirring cage and / or magnetic stirring body.As described in detail below, the heating device can be controlled based on the temperature detected by the temperature measuring element continuously or at predetermined time intervals.

[0029] Alternatively or additionally, a resistance temperature measuring element and / or a diode temperature measuring element, which uses the temperature dependence of the band gap for measurement, can be provided for measuring the temperature of the components arranged in the container, which is arranged in a through opening of the heating device or embedded in the material of an element of the insert, for example in the stirrer cage and / or in the chassis and / or rods connected to the stirrer cage and / or one of the at least two connecting struts.Alternatively or additionally, a pH measuring element for measuring the pH value of the components arranged in the container can be provided, which is arranged in a through opening of the heating device or embedded in the material of an element of the insert, for example in the stirring cage and / or in the chassis and / or rods connected to the stirring cage and / or one of the at least two connecting struts.

[0030] The measurement data of the infrared temperature measuring element and / or the resistance temperature measuring element and / or the diode temperature measuring element and / or the pH measuring element can be transmitted, for example, by means of a Bluetooth connection or another radio connection to an internal and / or external computing unit, wherein the corresponding electronic components connected to the temperature measuring element or to the pH measuring element (e.g. the transmitter / receiver) can be embedded in the respective element and in an element directly connected to the respective element.

[0031] In one embodiment, the temperature measuring element is not affected by radiant heat from heat storage devices, as the silicone mat described above has only low heat-storage properties and therefore a very low proportion of radiant heat. The silicone mat can have a continuous slot running parallel to the rotation axis, which allows for the installation of the temperature measuring element. By splitting the silicone mat with a spacer gap, the required clearance for the temperature measuring element can be easily created. This design allows the temperature of the components being processed to be determined online in real time during the entire processing process using a non-contact infrared temperature measuring element.

[0032] In one embodiment of the device, the device comprises a scale which is configured such that a movable unit comprising the container with the heating device, the insert and the motor can be arranged thereon, wherein the scale is configured to determine the weight of the unit. In this embodiment, the device can, for example, comprise two elements, namely the movable unit and a scale unit which comprises the scale and, in one embodiment, additionally a base for the secure and level installation of the scale on a surface (e.g., table top). The movable unit can be arranged in a predetermined position on the scale. The scale serves to measure the weight of the components arranged in the container in order to simplify the recipe-compliant feeding of the components. In one embodiment, a multi-head scale (e.g.,a 4-head scale) is used, which achieves accurate results in the weight range of the components specified above.

[0033] In one embodiment of the device, it has an internal computing unit which is configured to control the motor and / or the heating element and to receive the temperature measured by the temperature measuring element and / or the pH value measured by the pH measuring element. The computing unit can, for example, be arranged in the region of the motor below the container. In one embodiment, the computing unit is connected to the motor and / or the heating element and / or the temperature measuring element for data and / or control signal transmission. In addition, the internal computing unit can be connected to the scale. Accordingly, the motor (e.g. its speed) and / or the heating element (i.e. the applied temperature) can be regulated or controlled based on the temperature and / or weight data determined and transmitted to the internal computing unit.As already mentioned above, for example, a heating and / or temperature profile can be realized.

[0034] In one embodiment of the device, the internal processing unit has a receiver and / or transmitter for the corresponding exchange of data with an external processing unit. This allows the device and its above-mentioned elements / units to be controlled and / or regulated by means of an external processing unit (i.e. remotely). Such an external processing unit can be a server or a smartphone. For example, recipes for products or data for production can be transmitted from a server and then implemented in the device. The recipe includes, for example, information on the quantities of the components to be used and / or the times of adding the respective component. The production includes, for example, a temperature profile and information on the speed of the motor (and thus of the magnetic stirrer body), which can also be represented in a profile.In such a speed profile, it can be determined over what period of time the motor successively increases, decreases or keeps the speed constant and which speed is realized in each case.

[0035] In one embodiment, all elements of the device can be protected by a hollow cylindrical cover with a window through which an indicator light can be observed. The indicator light can, for example, indicate the operating status of the device.

[0036] The above object is further achieved by a method for producing a cosmetic or a cleaning agent from at least two predetermined components by means of a device described above, wherein an internal computing unit is provided with which a predetermined speed or a predetermined speed profile of the motor which drives the magnetic stirring body, or with which the predetermined excitation of the coil arrangement provided adjacent to the container bottom with a plurality of electromagnetic coils and a predetermined temperature or a predetermined temperature profile of the heating device for homogenizing, dispersing, emulsifying, softening, melting and / or comminuting the components introduced into the container are automatically regulated and / or controlled.To implement this process, the processing unit has a memory containing speed and temperature data, which can be specified as target values ​​for regulating or controlling the motor or heating device. The memory can also contain recipe data, which can be displayed, for example, on a display mounted on the device to inform the user of the quantity of which components should be added to the container at what time.

[0037] In one embodiment, to control the temperature or temperature profile of the heating device and / or to control the rotational speed or rotational speed profile, a temperature measured, for example, by the infrared temperature measuring element and / or by the resistance temperature measuring element and / or by the diode temperature measuring element and / or a weight value measured by the scale and / or a pH value measured by the pH measuring element is taken into account. The temperature and / or the weight value can be measured continuously or at predetermined intervals and taken into account when controlling the temperature and / or rotational speed.

[0038] In one embodiment, an overall pH of the product (i.e. the pH present in the resulting product) can be determined from the pH values ​​of the individual n components and the added amounts of the components used to produce the product and, if appropriate, compared with the pH measured using the pH measuring element. The computing unit can implement such a method for calculating the overall pH of the produced product based on the pH values ​​of the individual n components and the weight of each added component. The following calculation is used for this purpose: pH = (w1 p1 + w2 - p2 + w3 p3 + ... + wn pn) / (w1 + w2 + w3 + ... + wn), where p1, p2, p3 pn is the pH of the respective component of the n components and w1, w2, w3, ..., wn is the weight of each individual component of the n components. The pH values ​​of the components (e.g. average pH values) can either be stored in the memory or entered by the user.The overall pH value is then displayed to the user on the display described above, possibly with the measured pH value. Furthermore, the method can specify the type and amount of a component that can be added to the product to achieve a specified overall pH value (e.g., pH = 5.5). For example, citric acid can be used to shift the overall pH value to a more acidic range, or Na2CO3 can be used to shift the overall pH value to a more basic range.

[0039] In one embodiment, the computing unit can determine the total price of the manufactured product based on the prices of the components contained in the memory and the quantities of the components used to manufacture the respective product and, if necessary, display this price to the user. Alternatively or additionally, the computing unit can monitor for the user whether a purchased component has been used up and needs to be replaced (i.e., repurchased). For this purpose, the computing unit records (for example using a barcode reader) the purchased components and their corresponding quantities. When the components are used to manufacture a product using the device, this is also recorded, and from this it is determined how much of the respective component has been used up or what quantity of this component is still available.If it is determined that the inventory level for a particular component has fallen below a specified threshold, the user is notified, for example via the display, that the respective component needs to be repurchased. In an enhanced version of the process, data for reordering the components can be automatically transmitted to a seller of these components (e.g., via a server and the internet accessible via the server).

[0040] The computing device, also referred to as a controller, control device, or control unit, may include a processing unit and a memory (also referred to as a storage unit) in which computer-executable instructions for performing the methods described herein are stored. The processing unit or other described units may include any suitable devices configured to cause the performance of a series of steps to implement the method such that instructions, when executed by the computing device or other programmable device, can cause the performance of the functions / actions / steps specified in the methods described herein.The processing unit or other units may include, for example, any type of general-purpose microprocessor or microcontroller, a digital signal processing processor (DSP), a central processing unit (CPU), an integrated circuit, a field programmable gate array (FPGA), a reconfigurable processor, other suitably programmed or programmable logic circuits, or any combination thereof. The memory may be any suitable known or other machine-readable storage medium. The storage (data carrier) may be a non-volatile, computer-readable storage medium, such as an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, or a suitable combination of the foregoing. The memory may include a suitable combination of all types of computer memory, either internal or external to the device or computing unit, such as:Random access memory (RAM), read-only memory (ROM), compact disc read-only memory (CD-ROM), electro-optical memory, magneto-optical memory, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferroelectric random access memory (FRAM), or the like. The memory may comprise any storage means (e.g., devices) suitable for the retrievable storage of the computer program executable by the processing unit. The methods described herein may be implemented in a procedural or object-oriented high-level language or a scripting language, or a combination thereof, to communicate with or support the operation of the control unit or the computing unit. Alternatively, the methods described herein may also be implemented in assembly language or machine language. The language may be a compiled or interpreted language.The program code for implementing the methods described herein may be stored on the storage medium or in the device, for example on a read-only memory, a magnetic disk, an optical disk, a flash drive, or other suitable storage medium. The program code may be read by a general-purpose or special-purpose programmable computing device to configure and operate the computer when the storage medium or device is read by the computer to perform the methods described herein. Computer-executable instructions (computer program) may take many forms, including program modules that are executed by one or more computers or other devices. Program modules generally include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types.Typically, the functionality of the program modules can be combined or distributed in various embodiments as desired.

[0041] Accordingly, the above object is achieved by a computer program with program code stored on a machine-readable data carrier for carrying out the method steps according to the method specified above, when the computer program is read by a computing unit (computer) and executed on a computing unit (computer).

[0042] Further advantages, features, and possible applications of the invention are described below using an exemplary embodiment of the device according to the invention and the drawings. All described and / or illustrated features form the subject matter of the present invention, regardless of their summary in the claims and their references. They show schematically:

[0043] Fig. 1 shows the embodiment of a device according to the invention in a perspective view from the side,

[0044] Fig. 2 shows the cover of the embodiment according to Fig. 1 in a perspective view from the side,

[0045] Fig. 3 shows the elements and units arranged in the cover of the embodiment according to Fig. 1 in a perspective view from the side,

[0046] Fig. 4 shows the elements and units according to Fig. 3 in an exploded view and a perspective view from the side,

[0047] Fig. 5 and 6 show an insert of the embodiment according to Fig. 1 with chassis and holding element in a perspective view from the side (Fig. 5) and in an exploded view and a perspective view from the side (Fig. 6),

[0048] Fig. 7, 8, 8a a heating device of the embodiment according to Fig. 1 in a perspective view from the side (Fig. 7), in an exploded view and in each case a perspective view from the side (Fig. 8) as well as the layer structure of the first layer element (Fig. 8a),

[0049] Fig. 9, 10, 10a show a further embodiment of a heating device in a perspective view from the side (Fig. 9), in an exploded view and in each case a perspective view from the side (Fig. 10) as well as the layer structure of the inner layer element (Fig. 10a),

[0050] Fig. 11 shows an insert of a second embodiment of a device according to the invention with chassis and holding element in an exploded view and a perspective view from the side,

[0051] Fig. 12 shows the magnetic stirring body of the embodiment according to Fig. 11 in a perspective view from the side,

[0052] Fig. 13 and 14 show two further embodiments of the magnetic stirring body, which can be used, for example, with the embodiment according to Fig. 11, each in a perspective view from the side,

[0053] Fig. 15 shows an insert of a third embodiment of a device according to the invention with chassis and holding element in an exploded view and a perspective view from the side,

[0054] Fig. 16 and 17 the use of the embodiment according to Fig. 15 in a container in a locking position (Fig. 16) and an open position (Fig. 17) of a locking element

[0055] Fig. 18 shows the drive components of a fourth embodiment of a device according to the invention without a housing in a perspective view from the side,

[0056] Fig. 19 shows the lower part of the drive components of the embodiment according to Fig. 18 in a perspective view from the side,

[0057] Fig. 20 shows an insert without magnetic stirring body of the embodiment according to Fig. 18 in a perspective view from the side,

[0058] Fig. 21 the insert according to Fig. 20 in a view from the side and

[0059] Fig. 22 the insert according to Fig. 20 in a perspective view from below.

[0060] Figures 1 to 8 show in detail a first embodiment of a portable device for producing a personal care product, cosmetic, or cleaning agent (product), wherein the product is produced from at least two components. The components can consist of, for example, water, oils, detergents, active ingredients, etc.

[0061] The device comprises a container 1.1. in which the product is manufactured by homogenizing, dispersing, emulsifying, softening, melting, and / or comminuting. The entire device is protected by a hollow cylindrical cover 1.3. having an upper section 1.2. In a lower section opposite the upper section 1.2., an indicator light 1.4.a with a viewing window 1.4. is arranged, which indicates the operating status of the device (e.g., green: ready for use, red: error). The cover 1.3. provides an attractive exterior for the device, further thermal insulation, and, thanks to the vertical ribbing, a good grip when the user wishes to remove the cover 1.3. or relocate the entire device.

[0062] Within the cover 1.3, as can be seen in particular from Figs. 3 and 4, a heating device 1.5. with an infrared temperature measuring element 1.6. is provided, wherein the container 1.1. is arranged in the hollow cylindrical heating device 1.5. Below the container 1.1., a magnetic drive body 1.7. (with a permanent magnet) is provided, which is connected to a drive shaft 1.7.a, which is driven by an electric motor 1.8. arranged underneath. The device further comprises a fan 1.9. to each side of the electric motor 1.8., which fan cools the electric motor during operation.

[0063] The previously mentioned elements of the device are all arranged on a 4-head scale, with which, as shown above, the weight of these elements can be determined in the area 1.11. A disk and four corresponding force transducers are not shown here. Since the components are arranged in the container 1.1, the weight of the components can be determined accordingly using the 4-head scale. The device further comprises a circular plate-shaped base 1.12.a, which ensures that the device is positioned securely and levelly on a surface (e.g., table or worktop) and a lower cover / tight closure of the interior of the device. The indicator light 1.4.a is attached to the base 1.12.a. Furthermore, a holding plate 1.12. is provided on the base 1.12.a, which extends upwards parallel to the axis of rotation 3 and is intended for the attachment of electronic elements. For example, the holding plate 1.12.an internal computing unit (not shown) is arranged, which has the components shown above. The internal computing unit is connected to the heating element of the heating device 1.5., the temperature measuring element, the 4-head scale and the electric motor 1.8. The computing unit controls the heating element and the electric motor 1.8. based on the measured values ​​of the temperature measuring element and the 4-head scale. Furthermore, an energy supply device (e.g. a battery, transformer or power supply unit) is provided on the holding plate 1.12. which is connected to the 4-head scale, the electric motor 1.8., the temperature measuring element and the heating element of the heating device 1.5. and provides the energy required to operate these elements. On the holding plate 1.12.Furthermore, a transceiver connected to the internal processing unit is provided, which enables the exchange of the control and / or regulation data as well as the measured values ​​with an external processing unit (server or smartphone) (e.g. via Bluetooth).

[0064] For the production of the product, an insert 2 with a magnetic stirrer 2.5 and a stirrer cage 2.6 (see Fig. 5) is arranged in the container 1.1. in such a way that it is only a few millimeters away from the bottom of the container 1.1. (e.g. 2 mm to 8 mm). The insert 2 can be releasably fastened in the container by means of a holding element 2.1. with a rubber adapter 2.2., whose outer diameter corresponds to the inner diameter of the container 1.1. For this purpose, the rubber adapter 2.2. rests in a press fit on the inside of the upper end of the container 1.1. The rubber adapter 2.2. has the shape of a bellows seal in order to absorb forces transmitted from the insert 2 to the chassis 2.2.a during the production of the product in the container. The holding element 2.1. also has a stop surface 2.1.a, which, when the insert

[0065] 2 with chassis 2.2.a and holding element 2.1. are arranged at the specified position in the tank, resting on the upper edge of the tank 1.1. The chassis has three rods 2.2.a, to the lower end of which the agitator cage 2.6. is attached. The upper end of the rods 2.2.a is connected to the holding element 2.1. The fastening is detachable using screws, as shown in Fig. 6.

[0066] In Fig. 6 it can be seen that the magnetic stirring body 2.5. essentially has the shape of a thick rod, from which two stirring blades 2.3. protrude obliquely. In addition, the magnetic stirring body 2.5. has two openings 2.4. which are formed transversely to the rotation axis 3 and parallel to one another and each serve to accommodate a bar magnet (not shown). The openings 2.4. can be closed and opened again after the respective bar magnet has been inserted. The stirring cage 2.6. has a mandrel 2.6.b in the center, protruding in the direction of the rotation axis 3, to which the magnetic stirring body 2.5. can be rotatably attached, so that the magnetic stirring body 2.5. is in a defined position relative to the stirring cage 2.6. around the rotation axis

[0067] 3 rotates. Due to the rotation of the magnetic stirrer body 2.5., the components arranged in this area of ​​the container 1.1. are moved outwards against an edge 2.6.a of the stirrer cage 2.6 or the bottom of the container 1.1. by centrifugal forces and further forces applied by the stirrer blades 2.3. The bottom of the stirrer cage 2.6. has spoke-like struts 2.6.c and openings 2.6.d between them, which, when the components are moved in this direction by the magnetic stirrer body 2.5., facilitate the homogenization, dispersing, emulsifying, softening, melting and / or comminution of the components introduced into the container. The corrugated edge 2.6.a also supports the homogenization, dispersing, emulsifying, softening, melting and / or comminution of the components introduced into the container.

[0068] 7, 8 and 8a show the heating device 1.5. of the device. The heating device 1.5. has a plastic film (not shown in detail) which has dielectric heating wires (e.g. copper wire) embedded therein, which extend in a meandering shape over the entire film. The plastic film is provided inside a heat-dissipating, hollow-cylindrical first layer element 3.2. with a base 3.3. and extends almost completely along this layer element 3.2. The first layer element 3.2. has a thickness of at least 0.5 cm. In addition, a second, hollow-cylindrical layer element 3.4. made of plastic, aluminum, carbon fiber or other composite material is provided, which surrounds the first layer element 3.2. on the outside. A layer of ceramic wool can optionally be arranged between the first layer element 3.2. and the second layer element 3.4. The container 1.1. is within the first layer element 3.2.arranged, wherein this layer element with the at least one heating element tightly encloses the container 1.1. and is in direct contact with the outside of the container 1.1. The first layer element 3.2. has a continuous slot 3.1. running parallel to the rotation axis 3, through which an infrared temperature measuring element can protrude. A continuous opening 3.5. for the infrared temperature measuring element is provided in the second layer element 3.4. The infrared temperature measuring element is designed such that it can determine the temperature of the components arranged in the container 1.1. and transmit it to the internal processing unit.

[0069] An example of the layer structure of the first layer element 3.2. is shown in cross-section in Fig. 8a, whereby the layer structure can vary (e.g. an aluminum foil layer can be omitted). From the outside to the inside, the first layer element 3.2. has an aluminum layer 3.2.a, an aluminum foil 3.2.b, a rubber layer 3.2.c, the silicone foam layer 3.2.d, an electrically insulating plastic layer 3.2.e with embedded dielectric heating wires, a further rubber layer 3.2.f, a further aluminum foil 3.2.g and a Teflon layer 3.2.h. The outer aluminum layer 3.2.a surrounds the other layers of the first layer element like a jacket and thus has a housing function. The layers surrounding the silicone foam layer 3.2.d are intended to hermetically seal the silicone foam layer 3.2.d. The heating wires of layer 3.2.e generate heat and are connected to the power supply for this purpose, with the power supply being controlled by the computing unit. The inner Teflon layer 3.2.h prevents the heating device 1.5. from sticking to the container 1.1., which is arranged inside the heating device 1.5. and heated by the heating device 1.5. when the device is used to produce a body care product, cosmetic, or household product. The base 3.3. has the same layer structure as the first layer element 3.2., with the aluminum layer 3.2.a being arranged furthest down and the Teflon layer 3.2.h being arranged furthest up in the base 3.3., and the layers also having the same functionality and mode of operation as in the first layer element. Accordingly, the Teflon layer 3.2.h lines the interior of the assembly consisting of the first layer element 3.2. and the base 3.3.

[0070] Alternatively, the heating device 3.7 shown in Fig. 9, 10 and 10a can be used instead of the heating device 1.5. This heating device has the advantage that it is easier to manufacture than the heating device 1.5., since silicone foam is comparatively difficult to process. The heating device 3.7. consists of three elements, with an inner layer element 3.8. This inner layer element 3.8. is designed as a metal-clad dielectric heating element in the form of a hollow cylinder jacket with a continuous longitudinal slot 3.8.1 running parallel to the axis and two sections 3.8.2 angled to the sides of the longitudinal slot 3.8.1. The heating device 3.7. also has a circular disk-shaped heating element as a base 3.10. with a structure and materials that correspond to the inner layer 3.8. Furthermore, a middle insulating layer 3.9. is provided, which e.g.may consist of ceramic wool and may also have the shape of a hollow cylindrical shell with a continuous longitudinal slot 3.10.1 running parallel to a longitudinal axis. On the outside, the heating device 3.7. is enclosed by a cover layer 3.11., which rests against and surrounds the middle insulation layer 3.9.

[0071] The inner layer element 3.8. has the layer structure shown in cross-section in Fig. 10a, although this can vary (for example, an aluminum layer can be omitted). A first aluminum layer 3.8.a is arranged on the outside. This is followed, in this order towards the interior, by a layer of ceramic wool 3.8.b, a second aluminum layer 3.8.c, an electrically insulating plastic layer 3.8.d with embedded dielectric heating wires, and a third aluminum layer 3.8.e. The second aluminum layer 3.8.c and the third aluminum layer 3.8.e form an aluminum housing for the layer with the dielectric heating wires 3.8.d. The heating wires of layer 3.8.d generate heat and are connected to the power supply for this purpose, with the power supply being controlled by the processing unit. The inner aluminum layer 3.2.e prevents the heating device 3.7 from sticking. on the container 1.1., which, when using the device for producing a body care product, cosmetic, or household product, is arranged within the heating device 3.7. and heated by the heating device 3.7. The base 3.10. has the same layer structure as the inner layer element 3.8., with the first aluminum layer 3.8.a being arranged at the bottom and the third aluminum layer 3.8.e being arranged at the top in the base 3.10., and the layers also have the same functionality and operation as in the inner layer element 3.8.

[0072] In the area of ​​the overlapping longitudinal slots 3.8.1 and 3.9.1 of the inner layer 3.8. and the middle insulation layer 3.9., an angled section 3.11.1 and a U-shaped profile 3.11.2, for example, an aluminum profile, are arranged on each side. These sections run parallel to the longitudinal axis of the otherwise hollow-cylindrical cover layer. The infrared temperature measuring element can determine the temperature of the products arranged in the container through a recess in the profile 3.11.2 and the longitudinal slots 3.8.1 and 3.9.1, analogous to the above description of the heating device 1.5.

[0073] To manufacture the product, container 1.1 is placed in heating device 1.5. The components to be used for the respective product are then placed simultaneously or sequentially into the container opening located at the top. For this purpose, a display provided on the device can be used, which shows the weight of the respective component as measured by the 4-head scale. Once at least some of the components have been placed in container 1.1, insert 2, together with chassis 2.2a and holding device 2.1, is inserted into the container opening until the stop surface (collar) 2.1a rests on the upper edge of container 1.1. The insert is then in the correct position and fixed in relation to container 1.1. The heating element of heating device 1.5 and the speed of electric motor 1.8 are then adjusted.The processing unit controls the process in such a way that a predefined temperature and speed profile is followed. The temperature in the container is continuously measured by the temperature measuring element, and the total weight of the components is continuously measured by a 4-head scale. This data is evaluated by the processing unit and, if necessary, incorporated into the control system. After both profiles have been completed, product production is complete, and insert 2 can be removed from container 1.1 without losing a large amount of the components. The finished product (cosmetic or cleaning agent) can then also be removed from container 1.1.

[0074] In a further embodiment, a display can be provided on the device or connected to the device, on which the user of the device can be shown data on a recipe selected by them for a personal care product, cosmetic or household product. This data is determined by the computing device and transferred to the display. For example, the user can find out when and which amount of the individual components needs to be added. This can be correlated with the temperature and speed profile described above. Furthermore, as described in more detail above, the pH value of the manufactured product and the amount of an acid component or base component required for a desired pH value can be calculated and displayed. This greatly facilitates the production of a product with a desired pH value.The computing device can also be configured to determine the price of a product (manufactured according to the corresponding recipe) and display it on the screen, as described above. Furthermore, based on the computing device's calculations, the user can be alerted to low stock levels of components and the corresponding possibility of ordering such components, or a corresponding delivery order for these components can be transmitted. This is described in more detail above.

[0075] The magnetic stirrer body 22.5. shown in Fig. 13 has two rod-shaped elements 22.7. that protrude from the side of the cuboid-shaped central section 22.5.a, which, in the working position in the stirrer cage or container, faces away from the bottom of the container. The rod-shaped elements 22.7. extend approximately parallel to the rotation axis 22.6.e, which is illustrated by a dash-dotted line. The rod-shaped elements 22.7 enable thorough mixing of the components when the amount of product to be produced is comparatively large and thus largely fills the container. The protruding rod-shaped elements 22.7 also ensure thorough mixing of the product areas in the container that are located well above the bottom of the container.

[0076] The magnetic stirrer body 32.5., shown in Fig. 14, has integrated stirrer blades 32.3. that are molded onto the radial ends of the central section. This magnetic stirrer body 32.5. is characterized by a very compact design and is particularly suitable for small product quantities, where product adhesion is minimized. In the direction of rotation R, each stirrer blade 32.3. has a rounded section 32.3.a on the front and a beveled, tapered section 32.3.b on the back with an upper side that, when installed, runs beveled towards the bottom of the container against the direction of rotation R and exerts a force in the direction of the container bottom. The axis 32.6.e is also shown in Fig. 14 as a dash-dotted line.

[0077] A third embodiment of a device is described with reference to Figs. 15 to 17. Fig. 15 shows the insert that is inserted into the container 41.1 in Figs. 16 and 17. Except for a few differences explained below, the device corresponds in its structure and operation to the second embodiment according to Figs. 11 to 12. Therefore, the same reference numerals are used for identical elements, but they are enlarged by 30. For example, the holding element 12.1 of the second embodiment corresponds to the holding element 42.1 of the second embodiment.

[0078] The embodiment of the device according to the invention shown in Figs. 15 to 17 allows, in particular, the production of more viscous products. The arcuate recess 42.1.b arranged on the plastic or metal adapter 42.1. allows, as shown in Figs. 16 and 17, the holding element to be secured in the container 41.1. by means of a locking element 41.1.c. This embodiment enables a vortex effect in very viscous products. While the use of small magnetic stirring elements only creates a vortex effect with smaller product quantities, the use of larger stirring elements is necessary for larger product quantities (see, for example, the embodiment according to Fig. 13). However, even larger magnetic stirring elements can no longer create a vortex for a certain product quantity, and in particular with high product viscosity.Incorporating the guide rods into the stirring rotation has proven suitable for creating a vortex effect even at higher viscosity. The frictional resistance of the magnetic stirring element in the stirring cage entrains the stirring cage 42.6 with the rods 42.2.a and the holding element 42.1, causing it to rotate in the viscous product located in the container 41.1. However, if this is not desired, the rotation of the stirring cage 42.6 with the rods 42.2.a can be blocked by the arcuate recess 42.1.b (see Fig. 16, showing the locking position of the locking element 41.1.c). This is achieved by positively connecting a locking element 41.1.c in the recess 42.1.b, thus preventing movement of the insert. The user can achieve this function particularly easily by pushing the locking element 41.1.c back and forth in a handle 41.1.b, whereby the handle 41.1.b is arranged at the top of the container 41.1. In contrast, Fig. 17 shows the open position of the locking element 41.1.c, in which the locking element 41.1.c does not engage the recess 42.1.b. In the open position, the insert can rotate in the container 41.1.

[0079] The fourth embodiment of a device for producing a body care product, cosmetic, or household product, shown in Figs. 18 to 20 and shown without a housing, differs from the previously described embodiments, particularly in the design of the drive means. As can be seen in Figs. 18 and 19, this embodiment has a hollow cylindrical heating device 50.5, in whose inner, upwardly open cavity 50.5.a the container (not shown) for the components can be arranged. An insert with a rotatable magnetic stirring body and a stirring cage 52.6 can be provided in the container, wherein the stirring cage 52.6 is shown together with other elements of the insert in Figs. 20 to 22. Below the heating device 50.5 and a 4-head scale 50.11, eight electromagnetic coils 50.7 are provided in a circular arrangement (see Fig.19), which, through their corresponding circuitry / control, cause the rotation of the magnetic stirring element provided with a permanent magnet, arranged in the container, instead of the rotating permanent magnet driven by an electric motor. Furthermore, a cuboid-shaped receiving space 53 for the device's power source (e.g., two batteries) and an LED indicator light 50.4 are provided. Rib-like cooling elements 55 are provided at the upper end of the heating device 50.5, wherein the cooling elements 55 ensure that the heat generated by the heating device 50.5 is not transferred to the housing (not shown) of the device for a personal care product, cosmetic product, or household product.

[0080] Figs. 20 to 22 show the stirring cage 52.6 of the fourth embodiment of a device for producing a body care product, cosmetic, or household product, which is integrally formed with connecting struts 52.2.d projecting upward from the stirring cage 52.6 and an annular holding element 52.1 connecting the connecting struts 52.2.d at the top, on which holding element 52.1 a handle 52.1.b is provided. The stirring cage 52.6 of this embodiment has spoke-like struts 52.6.c and through openings 52.6.d arranged therebetween. Furthermore, an edge 52.6.a is provided on the stirring cage 52.6, which supports the homogenization, dispersing, emulsification, softening, melting, and / or comminution of the components introduced into the container. The stirring cage 52.6 has no protruding mandrel in a central section connecting the spoke-like struts 52, 6, c, which serves as a bearing element for the rotational movement of the magnetic stirring body in the stirring cage 52.6 could serve. In this embodiment of a stirrer cage 52.6, the magnetic stirring body rotates freely, driven by the coils 50.7 (cf. Fig. 19), i.e. without a pivot bearing, and with a constant or changing axis of rotation. On the surface of the stirrer cage 52.6 facing the magnetic stirring body, the latter has at least partially a grooved or knob-shaped surface structure 52.6.e, which causes the magnetic stirring body to adhere / positively connect to the surface of the stirrer cage 52.6 in order to generate rotation of the stirrer cage 52.6. The surface structure 52.6.e is arranged, for example, on the spoke-like struts 52.6.C and a central section connecting the struts (see Fig. 20). The holding element 52.1 has a collar 52.1.a, which can rest on the top side of the container. The handle 52.1.b has a recess which, analogous to the fourth embodiment, can interact with a locking element in order to achieve the locking position shown in Fig.20 to 22 (e.g. comprising the stirring cage 52.6, the connecting struts 52.2.d and the holding element 52.1) can either be fixed together to the container or allowed to rotate freely together. The rotation of the integral assembly is brought about by the surface structure 52.6.e, which is arranged on the surface of the stirring cage 52.6 facing the magnetic stirring body. As already described above, the speed of such a rotation can be determined by means of a proximity sensor 57 (cf. Fig. 18) and a corresponding marking on the underside of the handle 52.1.b and can be controlled or regulated by means of an internal or external computing unit (not shown). In one embodiment, the control or regulation can be carried out in such a way that the speed has a maximum value of, for example.

[0081] 250 mim 1The rotation of the integral assembly is also facilitated by the fact that the stirrer cage 52.6 has a circular disk-shaped projection 52.6.f (see Figs. 21 and 22) on its underside (i.e., the side facing the tank bottom) that is flat on its end face. The flat design of the end face facing the tank bottom reduces the friction between the tank bottom and the stirrer cage 52.6 and therefore supports a rotational movement of the integral assembly in the tank.

[0082] Furthermore, on the inside of each connecting strut 52.2.d, a curved rib or web 52.7 (see especially Fig. 21) is provided, which protrudes inwardly from the connecting strut 52.2.d. This rib 52.7 has a concave shape in the direction of rotation (here: counterclockwise), which causes the components arranged in the container to be pressed toward the magnetic stirrer body and stirrer cage 52.6 (i.e., downward), so that they can be processed more effectively.

[0083] The devices and methods described above can be advantageously used / carried out for the production of small quantities of a personal care product, a cosmetic, or a household product, since a low loss of component content is observed due to the design with an insert comprising a stirrer cage and a magnetic stirrer. Furthermore, the device and method are easy to operate.

Claims

Patent claims 1 . Device for producing a personal care product, cosmetic or household product from at least two predetermined components, wherein the device • a container (1.1.) accessible from one side to hold the components with a container bottom, • a heating device (1.5., 3.7., 50.5) surrounding the outside of the container, adapted to the outer shape of the container and attached to the container for heating the components introduced into the container and • an insert (2) which can be arranged within the container close to the container bottom, wherein the insert has a perforated stirring cage (2.6., 50.6) which can be fastened and / or rotated in a predetermined position with respect to the container, and a magnetic stirring body (2.5.) which can be rotated about a rotation axis (3) relative to the stirring cage, wherein the stirring cage at least partially surrounds the magnetic stirring body, wherein the magnetic stirring body is set up in cooperation with the stirring cage and at least partially with the heating device for homogenising, dispersing, emulsifying, softening, melting and / or comminuting the components introduced into the container and is drivable via a magnetic or electromagnetic field penetrating the container wall in such a way that it rotates towards the container bottom, for example by means of a magnetic or electromagnetic drive body (1.7), which is movable by means of a motor (1.8.) arranged adjacent to the container bottom, or by means of a coil arrangement provided adjacent to the container bottom with a plurality of electromagnetic coils (50.7).

2. Device according to claim 1, characterized in that the stirring cage has at least one edge (2.6.a, 50.6.a) which is arranged in a region which surrounds the magnetic stirring body in the radial direction with respect to the axis of rotation of the magnetic stirring body, wherein preferably the at least one edge is formed on projections which project in a direction parallel to the axis of rotation.

3. Device according to claim 2, characterized in that the insert has a chassis (2.2.a) and / or rods and / or at least two connecting struts (50.2.d) which is / are connected to the agitator cage, wherein the chassis, the rods and / or the at least two connecting struts extend into the region of the upper edge of the container.

4. Device according to claim 3, characterized in that the agitator cage (2.6., 50.6) and the chassis (2.2a) connected to the agitator cage and / or the Rods and / or at least two connecting struts (50.2.d) connected to the agitator cage are rotatable relative to the container.

5. Device according to one of the preceding claims, characterized in that the stirring cage has at least two through openings (2.6.d, 50.6.d) which are arranged between the magnetic stirring body (2.5.) and the container bottom.

6. Device according to one of the preceding claims, characterized in that the magnetic stirring body has at least one stirring blade (2.3.) which extends obliquely and / or parallel to the axis of rotation, and / or at least one rod-shaped element (22.7.) which extends parallel to the axis of rotation.

7. Device according to one of the preceding claims, characterized in that the container has a substantially cylindrical outer surface on the outside and that the heating device is designed in several layers and at least partially has the shape of a hollow cylinder, on one of the inner layers of which a dielectric heating element is arranged, which is covered towards the outside with at least one insulation layer (3.2., 3.4., 3.3.) which consists at least partially of silicone foam.

8. Device according to one of the preceding claims, characterized in that the device has an infrared temperature measuring element and / or a resistance temperature measuring element and / or a diode temperature measuring element and / or a pH measuring element, which is arranged in a through opening (3.5.) of the heating device or embedded in the material of an element of the insert and is designed to measure the temperature or the pH value of the components arranged in the container.

9. Device according to one of the preceding claims, characterized in that the device has a scale which is designed such that a movable unit comprising the container with the heating device, the insert and the motor can be arranged on it, the scale being designed to determine the weight of the unit.

10. Device according to claim 3, characterized in that the insert has a torsion-resistant chassis (2.2.a) and / or rods and / or at least two torsion-resistant connecting struts which is / are connected to the agitator cage.

11. Device according to one of the preceding claims, characterized in that the device has an internal computing unit which is used to control the motor and the heating element and to receive the temperature measured by the temperature measuring element. temperature and / or the pH value measured by the pH measuring element, wherein preferably the internal computing unit has a receiver and / or transmitter for the corresponding exchange of data with an external computing unit.

12. A method for producing a body care product, cosmetic or household product from at least two predetermined components by means of a device specified in one of the preceding claims, wherein an internal computing unit is provided with which a predetermined speed or a predetermined speed profile of the motor (1.8.) which drives the magnetic stirring body (2.5.) or with which the predetermined excitation of the coil arrangement provided adjacent to the container bottom with a plurality of electromagnetic coils (50.7) and a predetermined temperature or a predetermined temperature profile of the heating device for homogenising, dispersing, emulsifying, softening, melting and / or comminuting the components introduced into the container is automatically regulated and / or controlled.

13. Method according to claim 12, characterized in that for regulating the temperature or the temperature profile of the heating device, a temperature measured by the infrared temperature measuring element and / or by the resistance temperature measuring element and / or by the diode temperature measuring element and / or a weight value measured by the scale and / or a pH value measured by the pH measuring element is taken into account.

14. The method according to any one of claims 12 to 13, characterized in that a total pH value of the product is determined from the pH values ​​of the individual components and the added amounts of the components used for the production of the product and is optionally compared with the pH value measured with the pH measuring element and / or that a total price of the product is determined from the prices of the individual components and the added amounts of the components used for the production of the product.

15. Computer program with program code stored on a machine-readable data carrier for carrying out the method steps according to one of claims 12 to 13 when the computer program is executed on a computing unit.

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