Apparatus and method for processing product blocks

Abstract

To provide processing of a product mass which can be monitored and / or controlled or regulated better, and thus enable even more efficient processing of the product mass.SOLUTION: A device (1; 1'; 1"; 101; 201) for processing a product mass (M) includes at least one sensor means (41; 41a-c) having a dielectric sensor (44), where the sensor means (41; 41a-c) is arranged and formed such that dielectric properties of the product mass (M) can be detected continuously or at least temporarily by means of the dielectric sensor (44) in an environment of the dielectric sensor (44). The invention further relates to a method for processing a product mass (M), in particular by means of the device (1; 1'; 1"; 101; 201).SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD

[0001] The present invention relates to an apparatus for processing product masses. Furthermore, the present invention relates in particular to a method for processing product masses using such an apparatus.

BACKGROUND ART

[0002] Although the present invention can be used in a wide variety of fields in relation to product masses, for example during the production of their starting materials and / or during the finishing of various types of products, in particular in connection with the production and processing of pasty or dough-like or cream-like masses or other masses which have a considerable viscosity and / or resemble liquids or melts with considerable stickiness, the present invention and the series of problems underlying the present invention will be explained in more detail below by way of example using the processing of chocolate mass, the so-called conching, as an example, but the present invention is not limited to such applications.

[0003] For the production of chocolate, starting materials, in particular cocoa mass, sugar, cocoa butter, milk powder and / or fats are mixed and processed by applying compressive and shear forces in apparatus specially provided for this purpose.

[0004] In the production of high-quality chocolate, the goal in the conching process is to release moisture, i.e. water, from the chocolate mass. The chocolate mass is further subjected to different temperature boosts during conching so that unpleasant or unwanted aromas are volatilized and released. In this way, the taste of the chocolate mass improves increasingly as the conching time increases. This process can be supported by blowing in heated air.

[0005] For chocolate conching, various conching apparatuses (also referred to as conches) can be used, ranging from the conche originating from Rodolphe Lindt to semi-continuous high-performance conches (PIV).

[0006] Chocolate conching is a crucial process for product quality, but it is also a relatively time-consuming and energy-intensive process. In conventional approaches, the quality of the conched lumps is determined at the end of the conching process, for example, in relation to the resulting low moisture content and / or the release of undesirable aromatic substances. If this result does not meet expectations, i.e., if the required quality is not achieved, the conching process is extended.

[0007] A conching apparatus and method for conching product blocks is described, for example, in Patent Document 1 (German Patent Application Publication No. 10 2017 001 784).

[0008] Patent Document 1, mentioned above, describes detecting the weight of a product mass contained in a container in order to determine the dehumidification of the product mass. For this purpose, a weighing cell has been proposed that can detect the weight of the product mass filled in the container along with the weight of the container, and thus can detect the change in the weight of the product mass in the container during conching and / or release. Based on this, the progress of conching or release can be monitored.

[0009] During the conching of the aforementioned types of product masses, for example, chocolate mass for producing particularly high-quality chocolate, it is desirable to be able to better monitor, and preferably better control or adjust, the manufacturing process when handling the product mass. [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] German Patent Application Publication No. 10 2017 001 784 [Overview of the Initiative] [Problems that the invention aims to solve]

[0011] In view of the background technology described above, the object of the present invention is to provide a more monitorable and / or controllable or adjustable processing of product blocks, and thus enable more efficient processing of product blocks. [Means for solving the problem]

[0012] According to the present invention, this problem is solved by an apparatus for processing a product mass having the features of claim 1, and / or by a method for processing a product mass having the features of claim 14.

[0013] According to this, an apparatus for processing product blocks is proposed, which comprises a container for containing product blocks, at least one product block processing tool provided to act on the product blocks within the container, and at least one sensor means having a dielectric sensor.

[0014] In this case, the sensor means is arranged and configured to continuously, or at least temporarily, detect the dielectric properties of the product mass in the environment of the dielectric sensor using a dielectric sensor.

[0015] According to the present invention, a method for processing product blocks using such an apparatus is further proposed, which comprises the following steps: - A step of filling a container with the product mass and / or the starting materials for making the product mass, - A step of acting on a product mass with at least one product mass processing tool inside a container, processing or shaping and processing the product mass by bringing it into contact with the product mass processing tool, and bringing the product mass processing tool into contact with the product mass at least temporarily, - A step of detecting the dielectric properties of a product mass in the environment of the dielectric sensor using a sensor means having a dielectric sensor, and performing this detection continuously or at least temporarily while the product mass is located inside the container, Includes.

[0016] The underlying concept of this invention is to perform inline determination of properties in a product mass that should be monitored and reach a predetermined value, based on the dielectric properties as physical characteristics of the product mass, such as water content or a good approximation of water content. In this case, the present invention makes it possible to directly estimate the physical properties of a product mass represented by its dielectric properties.

[0017] The dielectric properties of the product mass can, advantageously, be detected and evaluated at a desired time point or at a predetermined time interval, or can be detected and evaluated continuously without a large time delay. Therefore, monitoring of desired properties, such as moisture content, can preferably be achieved in real time or at least near real time according to the present invention. This makes it possible to control, for example, the processing of the product mass in real time or at least near real time, and optimize it. For example, the processing can be terminated at an optimal time with respect to one or more predetermined criteria. Furthermore, one or more other control variables of the processing process can be systematically changed based on the monitored properties to obtain optimal results. In addition, adjustments can be made by appropriate adjustment variables, such as desired properties in the product mass, such as moisture content.

[0018] In this invention, the sampling of samples is advantageously avoided. Sampling is not only laborious, but it can also impose higher demands on care and cleanliness, particularly in the case of food products such as chocolate and cosmetics, regarding the desired purity and freedom from contamination in the product mass, and consequently, it can further increase the expenditure of personnel, time, and materials. Such labor can be reduced or avoided by dielectric analysis proposed in this invention.

[0019] The advantageous design and further configuration of the present invention are as described in the description based on the dependent claims and drawings.

[0020] In one design, the sensor means is arranged and configured such that the dielectric sensor can detect the dielectric properties of the product mass in the environment of the dielectric sensor continuously or at least temporarily. In particular, in this case, the dielectric properties and temperature in at least substantially the same region of the product mass can be detected. With regard to dielectric analysis, for example, the permittivity and / or loss factor can generally be a function of temperature, which applies for example to water. By detecting the dielectric properties and additionally the temperature at the same detection location, in other words, for at least the same spatial volume element in the product mass, meaningful conclusions can be drawn about the properties of the product mass at the detection location, for example the current moisture content of the product mass.

[0021] The sensor means can be constituted, for example, by a temperature sensor, in which case the temperature sensor can be, for example, a thermocouple or a measuring resistor. The temperature sensor can be configured, for example, as a platinum or copper measuring resistor.

[0022] In particular, it is envisaged that the dielectric properties and the temperature in the environment of the dielectric sensor are detected substantially simultaneously.

[0023] In one design, the product mass processing tool is arranged in the container so as to be movable relative to the container and is configured to mechanically act on the product mass. Thereby, suitable mechanical treatment of the product mass is provided, for example by applying forces such as compressive forces and / or shear forces to the product mass. The container can, for example, be arranged fixedly in the chamber, and the product mass processing tool can be arranged so as to be movable relative to the container within the container. The product mass processing tool can be provided to perform a rotational movement about a center or axis. However, in the case of other designs, the container can alternatively be arranged to be movable, for example, and the product mass processing tool can be arranged to be stationary, or in a further design, both the container and the product mass processing tool can be moved in the chamber to achieve relative movement between the two.

[0024] In a further configuration, the sensor means is arranged on the wall of the container. As a result, the sensor means can be arranged to be easily accessible, and the connection with the container can be simplified, particularly in relation to a stationary container.

[0025] In one design, the sensor means is arranged in the lower region of the wall of the container, particularly in the lower half of the wall, more preferably in the lower third of the wall. Thereby, good contact between the product mass and the sensor means can be ensured by utilizing gravity, which contributes to reliable detection of dielectric properties and, if necessary, temperature.

[0026] According to a further configuration, the sensor means is arranged in a wall region of the container that is repeatedly passed over from above by the product mass processing tool during operation of the device. In the case of such a further configuration, the reliability of contact and detection between the sensor means and the product mass can be further improved. This is because the product mass processing tool presses or displaces the product mass against the sensor means, for example under pressure.

[0027] In a further design, the surface of the sensor means, which faces the inner region of the container holding the product mass and is provided for contact with the product mass, is arranged to be recessed relative to the inner wall surface of the container. This ensures that a portion of the product mass remains in good contact with the measuring surface of the sensor means for a time sufficient to detect the dielectric properties and, if necessary, the temperature. In particular, a recess can be formed in the wall of the container, and the surface of the sensor means can be arranged at the bottom of the recess. It is conceivable that the product mass processing tool repeatedly passes over the recess region at a small distance, and repeatedly presses a portion of the product mass into the recess. This contributes to good contact with the sensor means, provides an increased residence time of the product mass, and furthermore enables always up-to-date detection by periodically exchanging the product mass in the recess.

[0028] In one design, the apparatus may be further equipped with several sensor means, which include dielectric sensors for temporarily or continuously detecting the dielectric properties of the product mass, in which case each dielectric sensor detects the dielectric properties of the product mass in the environment of the dielectric sensor. Some sensor means may be further configured to continuously or temporarily detect the temperature of the product mass. This contributes to further improving the reliability of detecting dielectric properties, especially temperature. For example, averaging or weighted averaging can be performed on several values ​​detected by some sensor means, representing dielectric properties and, if necessary, temperature. This can be used, for example, to compensate for or combine the effect of the relatively high movement speed of the product mass processing tool and the resulting limitation on the residence time of the volume element of the product mass on the sensor means. The use of some dielectric sensors can contribute to further improving the reliability of the measured dielectric values, for example, by averaging.

[0029] In a further configuration, several sensor means are arranged along the circumferential direction of the container.

[0030] Several sensor means are positioned spaced apart from each other, particularly along the path repeatedly followed by the product mass processing tool during the operation of the device. This allows the sensor means to be passed over sequentially at small intervals by the product mass processing tool, and in particular, to come into contact with new portions of the product mass. The path can, for example, be spaced away from the container wall and along the circumferential direction of the container.

[0031] In other designs, the sensor can be placed on an element positioned within the container for contact with the product mass. This element can, in particular, be movably positioned within the container. For example, the sensor can be placed on a product mass processing tool. This allows for alternative good contact between the sensor and the product mass because the product mass processing tool comes into intensive contact with the product mass during processing.

[0032] In a further configuration, the sensor means can be positioned within the effective surface area of ​​the product mass processing tool, particularly within the effective portion of the product mass processing tool that presses the product mass against the container during the processing operation of the device. This further improves the contact between the measuring surface of the sensor means and the product mass.

[0033] Further design considerations may include the simultaneous provision of sensor means positioned on the wall and sensor means positioned on elements within the container, particularly on the product mass processing tool, in which case the device would comprise at least two sensor means.

[0034] In one design, the apparatus is configured for processing food chunks. The use of dielectric sensors to obtain usable approximations regarding the moisture content of the product chunks eliminates the need for frequent sample collection, avoids associated hassle, and facilitates a clean and hygienic operating mode. In similar designs, this method can be used for processing food chunks.

[0035] In one design, the apparatus is configured as a conching apparatus for processing chocolate mass, and the product mass processing tool is a conching tool. During the conching of chocolate mass, it is important for the quality of the chocolate to reduce the moisture content of the chocolate mass to below a specified threshold, thereby preventing the additional release of undesirable aromatic substances. The present invention advantageously enables in-line monitoring of moisture content and optimization of the process during processing, in which case the physical properties of the product mass are directly utilized, as described above. Similarly, in a further configuration, the method can be used for processing chocolate mass.

[0036] In further design, the apparatus and method of the present invention can be configured to process one of several other food products, for example, during the production and / or final processing of ketchup, mayonnaise, or sauces, or during the production and / or final processing of spreadable foods such as spreads, or during the production and / or final processing of dairy products such as yogurt, or during the processing of honey.

[0037] In other designs, the apparatus and method of the present invention can also be used in processing other product blocks besides food.

[0038] In one design, the apparatus and method of the present invention can be configured for use, for example, in the processing of paint material product blocks or coating material product blocks, particularly during the manufacture of paints or varnishes. In a further configuration, the apparatus and method of the present invention can also be used for processing viscous sealing means or adhesives.

[0039] Further design allows the apparatus and method of the present invention to be used, for example, to process cosmetic product masses or pharmaceutical masses during the manufacture of creams, ointments, or pastes.

[0040] In particular, in the further application examples described above, good monitoring and control of the processing process become advantageous, and, for example, clean and less contaminated processes become easier to achieve.

[0041] In one design, a product mass processing tool for processing or shaping a product mass is moved within a container relative to the container. In this case, the product mass processing tool can be moved along a path, such as a circular path, and can rotate around a center or axis. This allows for proper processing of the product mass within the container.

[0042] In a further configuration of this method, at least one pause is provided during which the movement of the product block processing tool is interrupted or significantly slowed down. In this case, it is assumed that the detection of dielectric properties during the pause is performed while the product block processing tool is stopped or moving at a significantly reduced speed, or continuously, and that the evaluation of the detected dielectric properties is performed during the pause in which the product block processing tool stops or moves at a significantly reduced speed. Such a pause in movement allows for effective retention of the product block volume with respect to the sensor means, which contributes to particularly reliable detection of dielectric properties.

[0043] The duration of the pause during movement can be, for example, at least about 1 minute. This contributes to obtaining stable and reliable measurement results from the sensor means and allows for consideration of the expected set time that will elapse until the measured value reaches a stable level.

[0044] Further configurations include several pauses during movement. In this case, during the pauses, the product mass processing tool is stopped or slowed down at substantially the same position along its movement path. This allows for repeated measurements at different points in time in comparable configurations with respect to the container, tool, and product mass.

[0045] The product mass processing tool is preferably stopped or slowed down in a section of its travel path that passes above the mounting position of the dielectric sensor. This contributes to good contact between the product mass and the sensor.

[0046] The product lump processing tool is more preferably stopped or decelerated such that, during the processing operation of the apparatus, the effective portion of the product lump processing tool that presses the product lump against the container wall is stopped or significantly decelerated while covering the mounting position of the dielectric sensor. This further improves contact with the product lump and further improves the detection of dielectric properties.

[0047] In one design of this method, the temperature of the product mass is continuously or at least temporarily detected in the dielectric sensor environment, simultaneously with the dielectric properties. The advantages of temperature detection are as described above.

[0048] In a further configuration, by using the detected dielectric properties and temperature, approximate or estimated values ​​can be obtained regarding the properties of the product mass to be monitored, particularly the water content of the product mass. This provides useful information regarding the properties to be monitored based on the current physical conditions of the product mass.

[0049] Further design allows the dielectric properties of the product mass, particularly its dielectric properties and temperature, to be detected at several detection points. In this case, the detection points can be spaced apart from each other along a path that the product mass processing tool repeatedly follows during processing and over which the tool can continuously pass. For example, the dielectric properties detected at several detection points, along with several values ​​of temperature as needed, can be averaged or weighted averaged. The advantages of such further configurations are as described above.

[0050] In a further configuration, by using the detected dielectric properties and temperature values ​​at several detection points, an approximate or estimated value of the properties of the product mass to be monitored can be obtained.

[0051] It goes without saying that the above-described designs and further configurations can be similarly applied to the apparatus and method of the present invention.

[0052] If useful, the designs and further configurations described above can be combined in any way. Further designs, configurations, and implementations achievable in the present invention include combinations that are not explicitly mentioned with respect to the features of the invention described or described below in relation to exemplary embodiments. In particular, those skilled in the art will add each aspect as an improvement or addition to each basic form of the invention.

[0053] The present invention will be described in further detail below based on exemplary embodiments shown in the schematic drawings. [Brief explanation of the drawing]

[0054] [Figure 1] This is a central longitudinal cross-sectional view showing an apparatus configured as a conching apparatus for processing product blocks according to an exemplary first embodiment. [Figure 2] Figure 1 is a detailed view showing a detailed cross-section D of a conching device according to an exemplary first embodiment. [Figure 3]Figure 1 is a partial view showing the cross-section I-I of the conching device. [Figure 4] This is an explanatory diagram showing a shaft means of a conching device according to an exemplary first embodiment, which comprises a shaft and a conching tool disposed on the shaft and including a scraper and a deflection tool. [Figure 5] This is a central longitudinal cross-sectional view showing a device configured as a conching apparatus for processing product blocks according to an exemplary second embodiment. [Figure 6] This is a central longitudinal cross-sectional view showing an apparatus configured as a conching apparatus for processing product blocks according to an exemplary third embodiment. [Figure 7] This is a detailed view showing the environment D' (see Figure 6) of the sensor means in an exemplary third embodiment of the apparatus, with the product block processing tool passing overhead. [Figure 8] This is a partial cross-sectional view showing an apparatus configured as a conching apparatus for processing product blocks according to an exemplary fourth embodiment. [Figure 9] This is a central longitudinal cross-sectional view showing a conching device according to an exemplary fifth embodiment similar to Figure 2. [Figure 10] This is a central longitudinal cross-sectional view showing a conching device according to an exemplary sixth embodiment similar to Figure 7. [Figure 11] This is an explanatory diagram showing the shaft means of a device configured as a conching apparatus for processing product blocks, according to an exemplary seventh embodiment, comprising a shaft and a conching tool disposed on the shaft and including a scraper and a deflection tool. [Figure 12] This is a partial cross-sectional view showing a conching device according to an exemplary seventh embodiment. [Figure 13] This is a schematic flowchart illustrating a method according to an exemplary embodiment of the present invention. [Figure 14] Figures 1 to 13 are side views showing exemplary sensor means that can be used in the exemplary embodiments. [Modes for carrying out the invention]

[0055] The accompanying drawings are intended to provide a broader understanding of embodiments of the present invention. These drawings illustrate each embodiment and, in relation to the description, help to illustrate the principles and concepts of the present invention. Other embodiments and many of the advantages described above will become apparent in relation to the drawings. The elements in the drawings are not necessarily shown to their exact relative scale.

[0056] Unless otherwise specified, the same reference numerals are used in each figure to indicate elements, features, and components that are identical, functionally identical, and function similarly.

[0057] Figure 1 shows apparatus 1 configured as a conching apparatus for processing a product mass M according to an exemplary first embodiment. In this case, the product mass M is a chocolate mass. Apparatus 1 comprises a container 2 for containing the product mass M, the container 2 having walls 3. The product mass M to be processed and / or starting material in the form of raw materials for forming the product mass M can be filled into the container 2 via a filling funnel 5 in the upper region of the container 2. The inner region of the container 2 contains the product mass M, in this case represented in Figure 1 as a filling level P, to which the product mass M or starting material is filled. In Figure 1, the product mass and / or starting material are indicated only by reference numeral M, which indicates the region in which the material exists.

[0058] The inner region and walls 3 of the container 2 are formed substantially mirror-symmetric with respect to the vertical plane of symmetry 4. The container 2 extends substantially along the horizontal direction H in its longitudinal axis and is fixedly connected to the frame assembly 6 on both sides. The fixed frame assembly 6, which is spaced apart from each other in the horizontal direction H, is supported by supports on a substantially horizontal bottom.

[0059] The apparatus 1 comprises a shaft means 7 having a shaft 11, the shaft 11 extending so that its rotational axis and longitudinal axis L are substantially parallel to the horizontal direction H and penetrate the container 2. The ends 13a and 13b of the shaft 11 are rotatably attached to one of the frame assemblies 6, respectively. The shaft 11 can rotate around its longitudinal axis L within the container 2 to process the product mass M.

[0060] A product outlet 8 with a valve that can be opened and closed at will is provided in the symmetrical plane 4 region on the lower side of the container 2, and the product mass M can be carried out of the container 2 through the product outlet 8 at the end of processing. Furthermore, an air outlet 9 is located in the symmetrical plane 4 region on the upper side of the container 2.

[0061] On the portion of the shaft 11 housed in the container 2, several product block processing tools 17 are provided, which are formed as conching tools and are arranged at regular intervals on the shaft 11. Further on the portion of the shaft 11 housed in the container 2, product block deflection tools 19 are arranged adjacent to the ends 13a and 13b. In this case, these product block deflection tools 19 are positioned on the portion of the shaft 11 such that the product block processing tools 17 are located between the product block deflection tools 19 in the axial direction along the axis L. Figure 4 shows a perspective view of the shaft means 7 having the shaft 11 and several tools 17, 19.

[0062] Each product block processing tool 17 is positioned at a predetermined radial distance from the shaft 11 by a positioning portion 23 and is firmly connected to the shaft 11. The product block processing tool 17 further has a body 58, which includes an effective surface 59 and a scraper 71 coupled to the body 58. The product block processing tools 17 are formed substantially identically to each other, except for their positioning along the longitudinal axis L and circumferential direction of the shaft 11, and the alignment of the scraper 71 and the effective surface 59.

[0063] The product mass deflection tool 19 is similarly firmly connected to the shaft 11 in a predetermined manner by a positioning portion 29, positioned at a distance from the shaft, and formed to create a desired flow with respect to the product mass within the container 2.

[0064] In response to the rotation of the shaft 11 around the longitudinal axis L, the tools 17 and 19 move along a circular path B around the axis L. In this case, the shaft means 7 rotates as a single object together with the tools 17 and 19, which are firmly connected to the shaft 11. The product mass M can be mechanically acted upon for processing purposes with the help of the product mass processing tool 17, which is configured as a conching tool. In this case, the product mass is subjected to compressive and / or shear forces between the effective surface 59 and the wall 3. The inner region of the container 2 is formed substantially rotationally symmetrically around the axis L, so that the product mass processing tool 17 moves along the circular path B, in which case the body 58 moves from the inside of the wall 3 to the wall 3 at a substantially constant distance. Thus, the circular path B follows the circumferential direction U of the wall 3 at a substantially constant distance from the wall 3.

[0065] The shaft 11 is coupled at its first end 13a (see Figures 1 and 4) to a drive assembly 31. The drive assembly 31 is located on the left side of Figure 1 in the frame assembly 6 and is configured to rotate the shaft around its axis L. The shaft 11 is further rotatably mounted at its second end 13b within a bearing unit 37 around its longitudinal axis L. The bearing unit 37 is located on the right side of Figure 1 in the frame assembly 6.

[0066] The effective surface 59 of each product block processing tool 17 has an inlet region 61 and an outlet region 62 when the product block processing operation of the device 1 is in operation. In this case, when viewed in the circumferential direction of the tool 17 corresponding to the rotation R, region 61 is located upstream of region 62. The intermediate space between the effective surface 59 and the inside of the wall narrows from the first region 61 to the second region 62, and widens again downstream from the second region 62. In this way, the effective portion of the product block processing tool 17 can press its product block M against the wall 3 during product block processing.

[0067] The effective surface 59 has a central recess 67, which extends in the direction of the circular path B, and whose width decreases in the opposite direction to the circumferential direction of the tool 17. The effective surface 59 further has edge regions 68, 69 on both sides of the recess 67, in which case the edge regions 68, 69 are inclined with respect to the surface of the recess 67.

[0068] The shape of the effective surface 59 described above (see Figures 1 to 4) works in cooperation with the inner surface 47 of the wall 3 to mechanically act on the product mass M during rotation R, thereby enabling the processing of the product mass M. The effective surface 59 of the product mass processing tool 17 is positioned radially outward on the tool 17 with respect to the longitudinal axis L, and therefore faces the inner surface 47. During the rotation R of the shaft 11, a portion of the product mass M located between the effective surface 59 and the inner surface 47 is subjected to compressive and / or shear forces, thereby processing the chocolate mass M (this is called conching of the chocolate mass M). During the rotational motion R, the scraper 71 follows the body 58, moving slightly away from the inner surface 47 and in contact with the inner surface 47 during movement.

[0069] The conching apparatus 1 shown in Figure 1 further comprises a sensor means 41. The sensor means 41 includes a dielectric sensor 44, which can continuously or at least temporarily detect the dielectric properties of the product mass M in the environment of the dielectric sensor 44. In this case, the detected value generally indicates the physical properties of a partial volume of the product mass M in contact with the sensor means 41. The detected physical dielectric properties may include, in particular, the dielectric constant, dielectric loss rate, and / or variables derived therefrom, such as ionic conductivity and ionic viscosity.

[0070] The sensor means 41 is configured to continuously or at least temporarily detect the temperature of the product mass M in the environment of the dielectric sensor 44. The sensor means 41 can, in particular, detect dielectric properties and temperature at the same time with respect to substantially the same volume element in the product mass M. In other words, dielectric properties and temperature can be detected at substantially the same location in the product mass M.

[0071] In the exemplary first embodiment, the sensor means 41 is positioned on the wall 3 of the container 2, thereby being fixed within the space and easily accessible for connection and supply. Thus, detection points 42 are defined with respect to dielectric properties and temperature. The arrangement in the wall 3 region is shown more clearly in detail D in Figure 2. The sensor means 41 is configured as a sensor unit, substantially circular, and its surface 43, effective for measuring dielectric properties and temperature, faces the product mass M in the inner region of the container 2. Other geometric shapes of the surface 43 are conceivable, but the circular design contributes to the easy and advantageous housing of the sensor means 41 within the wall 3. In Figure 2, the diameter of the surface 43 is indicated by D43. For example, in the case of a relatively small conching device with a nominal capacity of 300 kg, D43 can be, for example, about 4 cm to about 5 cm. However, larger or smaller dimensions are equally conceivable, and D43 can be, for example, about 1 cm to about 6 cm in conching devices of other capacities. In other cases, the D43 of smaller conching devices can be approximately 2 cm to 3 cm.

[0072] Surface 43 comes into contact with the product mass M during the operation of the apparatus 1. Surface 43 is set back by a distance t from the inner surface 47 of the container 2 wall, thereby forming a circular recess 53 in the wall 3 in the illustrated embodiment. In this case, surface 43 is located at the bottom of the recess 53. The depth t of the recess 53 can be, for example, about t=1 mm to about t=10 mm.

[0073] The sensor means 41 is positioned on the wall 3 so that the product mass processing tool 17, which moves along a circular path B to process the product mass M inside the container 2, repeatedly passes over it. A radial distance is provided between the body 58 of the product mass processing tool 17 and the wall 3. The layer height of the product mass M above the detection point 42 may be, for example, about 5 mm to about 15 mm.

[0074] As the product mass processing tool 17 moves, other parts of the product mass M are repeatedly pushed into the recess 53. To simplify this and thus facilitate the replacement of the product mass M located in the recess, the recess 53 has an edge facing the inside of the container 2 that is beveled or chamfered. Alternatively, the edge of the recess 53 facing the inside of the container 2 may be rounded.

[0075] In the exemplary embodiments shown in Figures 1 to 4, the sensor means 41 includes, for example, a dielectric sensor 44 in a monotrode structure for dielectric analysis (DEA). The dielectric sensor 44 operates according to the principle of a plate capacitor, in which case the environment containing the product mass M to be analyzed acts as the second electrode. The capacitance of this measuring capacitor is a function of its geometric dimensions and dielectric constant in vacuum, as well as the dielectric constant in the environment of the electrode of the sensor 44 configured as a monotrode. If a change occurs in the dielectric properties of the environment located at a typical distance from the active measuring surface 43 of the dielectric sensor 44, the electrical resistance or electrical conductivity also changes, respectively.

[0076] In the exemplary embodiments described herein, the generated resistance, and therefore the dielectric behavior, changes during the processing of the product mass M. Measurement and control electronics of a dielectric analyzer (DEA) measure an AC voltage applied at a predetermined frequency and amplitude, as well as the resulting AC current and the phase shift between the input and output voltages, via a dielectric sensor 44 (which, as described above, is exemplary formed as a monotrode as a single electrode, in this case the entire environment including the product mass M functions as a second electrode). The signals detected by the sensor 44 are, for example, recorded, and the process can be evaluated by software. In this case, important dielectric measurement variables that change during the process, such as dielectric constant or dielectric loss rate, are displayed and evaluated with the help of software. Variables derived from these measurement variables, such as ionic viscosity, serve as relevant values ​​to describe the process. In the exemplary embodiments described herein with reference to Figures 1 to 4, for example, and in the further exemplary embodiments described below, the measurement frequency, and therefore the frequency of the applied AC voltage, can be, for example, 1 kHz. Measurements at other frequencies are also conceivable.

[0077] Figure 14 shows a side view of an exemplary sensor means 41, as well as the surface 43 facing the product mass M for measurement and its diameter D43. The sensor means 41 is configured as a unit having a substantially cylindrical first portion 46a, a substantially cylindrical second portion 46b, and a substantially cylindrical third portion 46c. These portions 46a, 46b, and 46c are arranged coaxially with respect to each other. The first portion 46a has a diameter D43 and supports the surface 43. The second portion 46b is connected to the first portion 46a and has a larger diameter D41 than D43, forming the outer diameter D41 of the sensor means 41. For example, D41 can be about 5 cm. Thus, portions 46a and 46b are connected to each other with a step in the circumferential direction. The third portion 46c has a diameter smaller than D43 and is connected to portion 46b on the side away from portion 46a. The connection line 46d for the sensor means 41 extends outward from portion 46c.

[0078] To detect the temperature of the product mass M, the sensor means 41 may further include a measuring resistor, for example, a platinum or copper measuring resistor, or it may instead have a thermocouple. In this case, the measuring resistor, for example, a Pt or Cu measuring resistor, or thermocouple constitutes a temperature sensor 45 and, together with the dielectric sensor 44, is installed on the sensor means 41 as a sensor unit (see also Figure 2). This ensures that a pair or set of measured values ​​relating to dielectric properties and temperature is always detectable at the detection point 42. Therefore, the detection of dielectric properties at the detection point 42 can also be, for example, as a function of temperature.

[0079] The sensors or measuring elements described above are not exhaustive. It will be obvious to those skilled in the art that all sensors and / or measuring means known to those skilled in the art can be installed instead of the sensor means 41, which are suitable for detecting measuring variables related to the manufacture of the product mass M.

[0080] The dielectric sensor 44 and temperature sensor 45 in Figure 2 are purely schematic as components of a sensor means 41 that provides detection of dielectric properties and temperature at location 42. In particular, in this case, the relative arrangement of both sensors 44 and 45 to each other may deviate from the arrangement schematically shown in Figure 2.

[0081] In the illustrated embodiment, to process the product mass M, which is chocolate mass, the apparatus 1 operates as schematically shown in the flowchart in Figure 13 and as described below.

[0082] Figure 13 schematically shows a sequence including step S1 of filling the product mass M and / or starting material, several processing steps S2a, S2b, S2c to S2n, several movement pauses S3a, S3b, S3c to S3n, and step S4 of removing or releasing the product mass M.

[0083] In step S1, the product mass M and / or the starting materials for making the product mass M are filled into container 2. In step S1, raw materials including, for example, cocoa mass, sugar, cocoa butter, and powdered milk can be filled into container 2 up to filling level P. The product mass M and / or raw materials are not shown, but are indicated by marking the area where the product mass M and / or raw materials are located.

[0084] In step S2, the shaft 11 is rotated R by the drive assembly 31, and the raw materials in the container 2 and the product mass M formed therefrom are processed, i.e., conched, by the drive assembly 31 in the illustrated embodiment. In this case, mechanical processing and mixing of the product mass M, the application of force to the product mass M by the effective surface 59, and the release of moisture and undesirable aromas through the air outlet 9 occur. The rotation of the shaft 11 in step S2a continues, for example, for a predetermined time, during which the mass is continuously processed. In this case, the water content F in the mass M is reduced to a desired target low water content F until the entire processing process is completed, i.e., before release in step S4. SOLL, FINAL It is reduced to this.

[0085] The dielectric properties and temperature of the product mass M are detected, for example, from the start of processing in step S2a by the sensor means 41 in a time-resolved, preferably simultaneous, and continuous manner within the dielectric sensor environment. In this exemplary embodiment, the detection of dielectric properties and temperature continues until the processing of the product mass M is completed and the product mass M is released from the container 2 in step S4.

[0086] As the drying of the product mass M progresses and the water content F decreases, a change occurs in the dielectric properties detectable by the sensor means 41. The behavior of ions and dipoles in an alternating electric field is detected by dielectric analysis. Ions move to electrodes that are charged in the opposite direction. This mobility of ions is also called ionic conductivity. For example, as the drying of the product mass M continues, the ionic conductivity decreases, and the so-called ionic viscosity increases accordingly. The temperature detected for the product mass M is also taken into consideration, and therefore the water content determined for the product mass M can always be compared at the same temperature and correlated well.

[0087] The shaft 11 is stopped at a predetermined position at the end of the processing time in step S2a, and thus the movement of the product block processing tool 17 is stopped. In this case, the shaft 11 is stopped at a section of the circular path B where one of the product block processing tools 17, which periodically passes over the mounting position of the sensor means 41 and therefore its detection point 42, is about to pass over the sensor means 41. Preferably, the product block processing tool 17 is stopped at a position where the sensor means 41 is located between region 61 and region 62, and a portion of the product block M is pressed against the sensor means 41. Figure 3 illustrates such a position with respect to the product block processing tool 17.

[0088] In step S3a, the shaft 11 is stopped for a period of time t3a, which can also be predetermined. During this time, time-resolved detection of dielectric properties and temperature continues. The dielectric properties and temperature values ​​detected during the stop time t3a, or for a portion of it, for example, during sub-intervals within the stop time t3a, are evaluated. In other words, an approximate value of the properties of the monitored product mass M, and in the illustrated embodiment, the water content F, is obtained from these values. This approximate value is, for example, the final target value F. soll , final Or a time-dependent target value F soll (t) or both can be compared.

[0089] Given that the process results in the continuous recirculation and mixing of the product mass M, local detection of dielectric properties and temperature is advantageous in that it is possible to indicate the current water content of the product mass M in the container with good accuracy. This allows the processing process (conching in this case) to be monitored with significant improvement and can be controlled or adjusted according to the measurement results, and therefore the approximate value obtained with respect to the water content F. In this way, the processing of the product mass M can be designed more efficiently, and both short processing times and over-processing can be reliably avoided.

[0090] As described above, following S3a, the shaft 11 is rotated R again in step S2b, and the product mass M is further processed. Step S2b is followed by a further motion stop S3b with a new evaluation of the value detected by the sensor means 41, as described for S3a. This step is followed by a further processing step S2c and a further movement pause S3c, as described immediately prior. The number of processing steps and movement pauses can be adapted as needed. For example, generally, n processing steps and n movement pauses can be provided. It is preferable that the stopping of the product mass processing tool 17 occurs along its path B at the same position of the product mass processing tool 17, i.e., at the same angular position of the shaft 11.

[0091] Regarding the length of time, during the conching process of chocolate mass M, which often takes several hours, for example, approximately 0.5 hours can be allocated for each processing step length t2a, t2b, t2c, ..., t2n, and approximately 1 minute can be allocated for each movement pause length t3a, t3b, t3c..., t3n. However, other times are also conceivable. Furthermore, in some variations, for example, the length of the processing steps may not be constant but may vary throughout the entire processing time, and therefore the time distribution of the time-series evaluation of the detected values ​​may not be uniform.

[0092] Furthermore, in a modified version of the method shown in Figure 13, the detection of dielectric properties and / or temperature values ​​by the sensor means 41 is performed only during the movement pauses S3a to S3n or these time intervals, and therefore when the shaft 11 is stopped. The values ​​thus detected are then evaluated with respect to the movement pauses S3a to S3n or these time intervals.

[0093] Referring to Figure 13, in a modified version of the approach described above, instead of a complete stop in the movement pauses S3a to S3n, a rotation R of the shaft 11 that is significantly reduced in relation to the processing operation in steps S2a to S2n can be assumed. In this modified version, the above also applies.

[0094] During the processing, for example, in one, some, or all of steps S2a to S2n, heated air can be introduced into the container 2 through a supply duct. The supply of additives, such as fat-containing additives, is also possible.

[0095] In the exemplary second embodiment of apparatus 1' shown in Figure 5, an evaluation / control device 73 is provided, which controls the drive assembly 31 and evaluates the dielectric properties and temperature detection values ​​provided by the sensor means 41. Based on these evaluation results, the operation of apparatus 1' is controlled by the evaluation / control device 73. As described above, in order to perform highly reliable measurements during the movement pause S3a to S3n, a rotation angle detection means 79 is further provided so that the shaft 11 can always be stopped at the same angular position, or, in a modified case, decelerated. The detected value of the rotation angle is also processed by the control device 73, thereby controlling the drive assembly 31 to perform the movement pause S3a to S3n. Embodiments relating to the exemplary first embodiment also apply to apparatus 1'. Apparatus 73 can be further designed as an evaluation / adjustment device, which allows for adjustment using adjustment variables such as water content F.

[0096] From Figures 1 to 3, it can be seen that the sensor means 41 in the exemplary first embodiment is located in the lower region of the wall 3, in this case at the bottom of the cross-section of the container 2, for example, at the position of the product mass processing tool 17 located on the far right in Figure 1. Looking at the container 2 as a whole, the sensor means 41 is located in the lower one-third of the wall 3 with respect to the vertical direction V.

[0097] The sensor means 41 can also be positioned, for example, near the plane of symmetry 4, further toward the bottom of the longitudinal central cross-section of the container 2. This is schematically illustrated in an exemplary third embodiment of the present invention. As in the exemplary embodiments described above, one of the product block processing tools 17 shown in Figure 6 also passes above the sensor means 41. Except for the position where the sensor means 41 is positioned, the conching device 1'' shown in Figure 6 is configured similarly to the device 1 or 1' according to the exemplary first or second embodiment shown in Figures 1 to 5. Figure 7 shows together and in detail the position of the sensor means 41 at the location identified as D' in Figure 6, with the surface 43 of the sensor means 41 retracted by a distance t.

[0098] Figure 8 shows the apparatus 101 according to an exemplary fourth embodiment, which differs from the apparatus of the exemplary first embodiment in that it is provided with several sensor means 41a, 41b, and 41c. Although the embodiment in Figure 8 is provided with three sensor means 41a to 41c, two or more sensor means are also conceivable. Each of the sensor means 41a to 41c is configured in the same way as the sensor means 41 described above, referring to the exemplary first embodiment, and operates as described above. Except as described above, the apparatus 101 shown in Figure 8 is configured in the same way as the apparatus shown in Figures 1 to 4 or Figure 5.

[0099] Figure 8 shows a partial cross-sectional view of the apparatus 101 in container region 2, similar to section II suggested in Figure 1.

[0100] Similar to the exemplary embodiment described above, the product mass processing tool 17 moves along a circular path B around an axis L when the shaft 11 is rotated R by the drive assembly 31, in which case the circular path B follows the circumferential direction U of the container 2 at a constant distance from the inner wall surface 47. Several sensor means 41a, 41b, 41c are positioned on the wall 3 spaced apart from each other along the circumferential direction U along path B, in other words, on projections on the inner wall surface 47. In Figure 8, the distance between sensor means 41a, 41b is shown as an angle α, and the distance between sensor means 41b, 41c is shown as an angle β, but instead, for example, the curve length along the inner wall surface 47 could be shown. In the exemplary embodiment shown in Figure 8, the sensor means 41a~c are spaced equally apart from each other, so α=β applies.

[0101] In an in-line process, to obtain a good approximation of the current moisture content F of a product mass M, in this case, for example, a chocolate mass, in the exemplary fourth embodiment, the dielectric properties and temperature can be further averaged or weighted averaged along the path B in the surface region 43, at detection points 42a, 42b, 42c. In this case, it is conceivable that a sufficiently accurate approximation can be obtained by shortening the stationary time in the aforementioned movement pause time S3a to S3n, or, in a modified example, shortening the decelerated movement time, or omitting the movement pause, and by averaging over several measurement points 42a, 42b, 42c.

[0102] Figure 9 shows details of an exemplary fifth embodiment of the apparatus. The exemplary embodiment of the apparatus differs from the exemplary first or second embodiment of the apparatus 1, 1' shown in Figures 1 to 4 and 5 only in that the surface 43 of the sensor means 41 that contacts the product mass M is positioned on the wall 3 of the container 2 so as to be flush with the inner wall 47. Being flush allows for further simplification of cleaning the apparatus, for example, in which case sufficient residence time for the mass M in contact with the surface 43 is ensured, as described above, for example, by pausing during movement.

[0103] Figure 10 similarly shows an exemplary apparatus according to the sixth embodiment, the illustrated apparatus differs from apparatus 1'' in Figures 6 and 7 only in that the surface 43 of the sensor means 41 is flush with the inner surface 47 of the wall.

[0104] As shown in Figure 9 or Figure 10, the inner surface 47 and the surface 43, which are flush with each other, can also be provided if the device includes several sensor means 41a to c, for example, along path B. In the exemplary fourth embodiment shown in Figure 8, one, some, or all of the surfaces 43 of the sensor means 41a to c can be flush with the inner surface 47 of the wall, and in such a design, the processing of values ​​detected at several detection points can additionally contribute to reducing or correcting the effect of shortening the residence time of the product mass M in contact with the surface 43.

[0105] An apparatus 201 for processing product mass M according to an exemplary seventh embodiment will be described below with reference to Figures 11 and 12. For this purpose, the differences between the exemplary seventh embodiment and the exemplary first embodiment will be described below; in this case, please refer to the above for details other than the differences.

[0106] In the exemplary seventh embodiment, the apparatus 201 comprises a modified shaft means 7'. In its mechanical configuration, the shaft means 7' corresponds to the shaft means 7, in this case one or more of the product mass processing tools 17, for example two of them in Figure 11, additionally have or each have a sensor means 41. Thus, in contrast to the exemplary first embodiment, the sensor means 41 in the exemplary seventh embodiment is not located in the wall 3 region, but is provided for contact with the product mass M and is located on each of the product mass processing tools 17 that apply compressive and / or shear forces to portions of the product mass M.

[0107] In the exemplary seventh embodiment relating to the sensor means 41, the detection and evaluation of dielectric properties and temperature, or their evaluation during continuous detection, are performed at a position on the product block processing tool 17 that supports the sensor means 41 and provides good contact between the product block M and the sensor means 41, for example, at the position of the tool 17 shown in Figure 12. In the exemplary seventh embodiment, as described above with respect to Figure 13, movement pauses S3a, S3b, S3c, ..., S3n may also be provided to improve detection.

[0108] The sensor means 41 shown in Figure 11 corresponds to the sensor means 41 described above in the exemplary fourth embodiment, particularly in terms of its configuration and operating mode.

[0109] The control of the sensor means 41, as well as the detection of dielectric properties and temperature values, can be performed, for example, by a line 83 that is guided through the positioning portion 23 and the shaft 11 and contacts the outside of the shaft end 13b. Alternatively, wireless transmission is also conceivable.

[0110] In particular, in the seventh exemplary embodiment, the angular position of the shaft can be detected by the rotation angle detection means 79 to detect and evaluate dielectric properties and temperature values ​​during the period or time interval in which the surface 43 is in contact with the mass M. In this case, as an alternative to or addition to the detection of the rotation angle, the mechanical resistance that must be overcome by the drive assembly 31 for rotation R can be detected in time resolution for the purpose of determining the period in which the product mass processing tool 17 having the sensor means 41 is immersed in the product mass M.

[0111] In a modified example of the seventh embodiment, the sensor means 41 may be located on one of the product block deflection tools 19.

[0112] In further modifications, it is conceivable that the shaft means 7' of the exemplary seventh embodiment or its modification may be used in one of the devices according to the exemplary first to sixth embodiments or their modifications.

[0113] In particular, the exemplary embodiments described above describe a method for inline determination of the water content during the conching process in chocolate manufacturing, and an apparatus capable of carrying out such a method.

[0114] However, the present invention is not limited to the processing or conching of chocolate mass, but can be used for processing a wide variety of product masses M. For example, the present invention can be used for processing other food masses, product masses in the field of cosmetics or pharmaceuticals, or product masses in the field of paints, coatings, sealants or adhesives, in which case, for example, the shape of the container 2 and / or processing tool 17 and optionally deflection tool 19 can be adapted to each mass M. In the case of such other masses, instead of water content, different characteristics of the product mass to be monitored can be selected, and with respect to those different characteristics, conclusions can be drawn and approximate values ​​calculated based on dielectric properties and, for example, temperature.

[0115] Although the present invention has been fully described based on preferred exemplary embodiments, the present invention is not limited thereto and can be modified in many different ways.

[0116] For example, the present invention is not limited to the geometric design and number of containers and product lump processing tools as described above and shown in the figures. [Explanation of Symbols]

[0117] 1,1',1” device 101,201 equipment 2 containers 3. Wall (container) 4. Plane of Symmetry 5 Filling funnel 6 Frame Assembly 7,7' shaft means 8 Product outflow section 9. Air outlet 11 shafts 13a, 13b End parts (shafts) 17. Product Block Processing Tools 19 Product mass deflection tool 23,29 Positioning section 31 Drive Assembly 37 Bearing Unit 41, 41a~41c Sensor means 42, 42a~42c Detection locations 43 Surface 44 Dielectric Sensor 45 Temperature Sensor 46a First part (sensor means) 46b Second part (sensor means) 46c Third part (sensor means) 46d connection line 47 Inner surface of the wall 53 Recess 58 Main unit (product block processing tool) 59 Effective area 61,62 area 67 Central recess (effective surface) 68,69 Edge region (effective surface) 71 Scraper 73 Evaluation and Control Systems 79 Rotation angle detection means 83 lines D41 Diameter (Sensor means) D43 Diameter (Surface (Sensor)) Route B H horizontal direction L Longitudinal axis (shaft) M Product mass P Product Level R rotation direction U Circumferential direction (container) V vertical direction α,β angles S1 Filling step S2a,b,c,n Processing Steps S3a,b,c,n pause S4 Removal Step

Claims

1. Apparatus (1;1';1”;101;201) for conching chocolate mass (M), - A container (2) for containing the chocolate mass (M), - The container (2) is provided with at least one product mass processing tool (17), which is a conching tool, for conching the chocolate mass (M), - At least one sensor means (41; 41a to c) having a dielectric sensor (44), Equipped with, The sensor means (41; 41a to c) are arranged and configured so that the dielectric properties of the chocolate mass (M) can be continuously or at least temporarily detected by the dielectric sensor (44) in the environment of the dielectric sensor (44). A circular recess (53) is formed in the wall (3) of the container (2), and the surface (43) of the sensor means (41; 41a to c) is positioned at the bottom of the recess (53). The sensor means (41; 41a to c) are arranged inside the container (2) and on the wall (3) of the container (2), The apparatus wherein the sensor means (41; 41a-c) is positioned in the wall (3) region of the container (2) which is repeatedly passed over by the product lump processing tool (17) while the apparatus (1; 1'; 1") is in operation.

2. The apparatus according to claim 1, characterized in that the sensor means (41; 41a to c) is configured to enable the sensor means (41; 41a to c) to continuously or at least temporarily detect the temperature of the chocolate mass (M) in the environment of the dielectric sensor (44).

3. The apparatus according to claim 1 or 2, characterized in that the product mass processing tool (17) is positioned inside the container (2), is movable relative to the container (2), and is formed to conch the chocolate mass (M).

4. The apparatus according to claim 1 or 2, characterized in that the sensor means (41; 41a to c) is located in the lower region of the wall (3) in the container (2).

5. The apparatus according to claim 1 or 2, characterized in that the surface (43) of the sensor means (41; 41a to c), which faces the inner region of the container (2) containing the chocolate mass (M) and is provided to contact the chocolate mass (M), is arranged to be set back from the inner wall surface (47) of the container (2).

6. An apparatus according to claim 1 or 2, wherein the apparatus (101) is provided with several sensor means (41a to c), each of the several sensor means (41a to c) has a dielectric sensor (44), and the dielectric sensor (44) is configured to temporarily or continuously detect the dielectric properties of the chocolate mass (M) in the environment of the dielectric sensor (44).

7. The apparatus according to claim 6, The container (2) is further provided with a shaft (11) that penetrates it. The at least one product block processing tool (17) is connected to the shaft (11) and rotates around the shaft (11), The apparatus is characterized in that the aforementioned several sensor means (41a to c) are arranged around the shaft (11).

8. The apparatus according to claim 6, characterized in that the several sensor means (41a to c) are spaced apart from each other along a path (B) that the product lump processing tool (17) repeatedly follows when processing the chocolate lump (M) during the operation of the apparatus (101).

9. The apparatus according to claim 1 or 2, characterized in that the sensor means (41) is provided for contact with the chocolate mass (M) and is positioned on an element located within the container (2).

10. An apparatus according to claim 1 or 2, characterized in that the apparatus (1;1';1”;101;201) is configured for conching chocolate mass (M).

11. A method for conching chocolate mass (M) using the apparatus (1;1';1”;101;201) described in claim 1 or 2, wherein the method is - A step of filling a container (2) with the chocolate mass (M) and / or the starting materials for making the chocolate mass (M), - A step of conching the chocolate mass (M) with at least one product lump processing tool (17) in the container (2), wherein the chocolate mass (M) is conched by bringing it into contact with the product lump processing tool (17), and the product lump processing tool (17) is brought into contact with the chocolate mass (M) at least temporarily. - A step of detecting the dielectric properties of the chocolate mass (M) in the environment of the dielectric sensor (44) using a sensor means (41; 41a to c) having a dielectric sensor (44), and performing the detection continuously or at least temporarily while the chocolate mass (M) is located inside the container (2), Methods that include...

12. A method according to claim 11, characterized in that the product mass processing tool (17) for conching the chocolate mass (M) is moved within the container (2) relative to the container (2).

13. A method according to claim 12, characterized in that at least one movement pause (S3a to S3n) is provided, the movement of the product agglomeration tool (17) is interrupted or significantly slowed down during the movement pause (S3a to S3n), the dielectric properties during the movement pause (S3a to S3n) are detected while the product agglomeration tool (17) is stopped or moving at a reduced speed or continuously, and the detected dielectric properties are evaluated during the movement pause (S3a to S3n) in which the product agglomeration tool (17) is stopped or moving at a reduced speed.

14. A method according to claim 12, characterized in that several movement pauses (S3a to S3n) are provided, and the product lump processing tool (17) is stopped or decelerated at substantially the same position along the movement path (B) of the product lump processing tool (17) during the movement pauses (S3a to S3n).

15. A method according to claim 11, characterized in that the temperature of the chocolate mass (M) is detected continuously or at least temporarily in the environment of the dielectric sensor (44) at the same time as the dielectric properties.

16. A method according to claim 11, characterized in that the dielectric properties of the chocolate mass (M) are detected at several detection locations (42a to c).

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