EP1487240A1 - Heater for product stream - Google Patents

Heater for product stream Download PDF

Info

Publication number
EP1487240A1
EP1487240A1 EP03013574A EP03013574A EP1487240A1 EP 1487240 A1 EP1487240 A1 EP 1487240A1 EP 03013574 A EP03013574 A EP 03013574A EP 03013574 A EP03013574 A EP 03013574A EP 1487240 A1 EP1487240 A1 EP 1487240A1
Authority
EP
European Patent Office
Prior art keywords
product
channel
electrodes
carrying channel
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03013574A
Other languages
German (de)
French (fr)
Other versions
EP1487240B1 (en
Inventor
Hans-Peter Dr. Wild
Bradley Gunn
Klaus Lochbühler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INDAG Gesellschaft fuer Industriebedarf mbH and Co Betriebs KG
Original Assignee
Rudolf Wild GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rudolf Wild GmbH and Co KG filed Critical Rudolf Wild GmbH and Co KG
Priority to DE50301102T priority Critical patent/DE50301102D1/en
Priority to AT03013574T priority patent/ATE303710T1/en
Priority to EP03013574A priority patent/EP1487240B1/en
Priority to SI200330068T priority patent/SI1487240T1/en
Priority to ES03013574T priority patent/ES2247455T3/en
Priority to DK03013574T priority patent/DK1487240T3/en
Priority to US10/865,327 priority patent/US7411165B2/en
Priority to CNB200410055092XA priority patent/CN100469200C/en
Priority to CA002470802A priority patent/CA2470802C/en
Priority to RU2004118459/09A priority patent/RU2283546C2/en
Priority to HR20040539A priority patent/HRP20040539B1/en
Priority to PL368497A priority patent/PL203969B1/en
Priority to BR0402215-7A priority patent/BRPI0402215A/en
Priority to JP2004175892A priority patent/JP2005058219A/en
Priority to SA04250279A priority patent/SA04250279B1/en
Publication of EP1487240A1 publication Critical patent/EP1487240A1/en
Application granted granted Critical
Publication of EP1487240B1 publication Critical patent/EP1487240B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/46—Dielectric heating
    • H05B6/60—Arrangements for continuous movement of material

Definitions

  • the invention relates to a device for heating product streams, in particular of food product streams containing fruit or pieces of fruit, with a product-carrying channel through which the product flows and with a Device for generating alternating electrical fields, the electrodes, Includes electrode connections and an alternating field generator.
  • Devices of this type are known in the prior art. Generally they serve Heat products, especially food products, so that bacteria are present Can be killed and the product will have a longer shelf life. Important is that there are quality features like color, taste, consistency and texture not change significantly. This is particularly the case with fruit or pieces of fruit containing food products important because of the structure of the fruit Heat can easily be destroyed. So the challenge is To develop process methods and devices in which the desired Properties of the product are preserved as much as possible.
  • a device for heating and sterilizing product streams is e.g. from the US 6 246 040 B1 known.
  • glass or Teflon tubes move product flows through strong electrical alternating fields dielectric heated.
  • radio frequency fields are located on the outside of the tubes Electrodes applied.
  • Polar or electrically asymmetric molecules in the to heating product are set in motion by being in the want to align electrical field. The molecular movement thus generates heat.
  • This The heating method is referred to below as radio frequency heating.
  • Such System enables fast and homogeneous heating even in non-homogeneous Product mixtures. In these systems, however, a large part of the energy goes into the The walls of the tubes are lost, so that the efficiency of the device is low.
  • the productivity of such devices is relatively low and thus the procedural costs are correspondingly high.
  • Another known device uses the ohmic method Heating. An electrical current flows through the medium to be heated. There low-frequency voltage sources (up to 60Hz) are used. The electrodes are in place in direct contact with the product, which keeps energy losses to a minimum. However, this process is only successful with homogeneous product flows applicable. Since the product channels must be relatively narrow (approx. 1 cm), this is Process only with difficulty with e.g. fluids enriched with pieces of fruit can be used and the flow rates achieved are low. There is also a risk electrolysis with the formation of hydrogen. This leads to a relatively short one Lifetime of the electrodes, which are mostly made of carbon.
  • electrodes are inside the arranged product-carrying channel, one between the electrodes through a Alternating field generator generates high-frequency electric field that is in the channel located product heated and sterilized if necessary.
  • high frequency electric field is understood to mean fields with frequencies higher than that Mains frequency and are in particular in the kHz-MHz range.
  • the electrical Alternating field enables the product to penetrate deeply, directly and uniformly Heating, preferably of dielectric materials such as e.g. Water molecules. there are especially inhomogeneous products, such as with fruit or pieces of fruit fortified food fluids, gently heated.
  • the solution according to the invention prevents unnecessary energy loss, since no additional material, such as there is a dielectric between the electrode and the product, thus enabling one efficient, energy-saving and productive. Use. Furthermore, such Device the response time short, which has a positive effect on the temperature control.
  • the electrodes are in direct contact with the product in addition to radio frequency heating, ohmic heating instead, since an electrical one Current can flow through the product. This also increases the efficiency of the Contraption.
  • the electrodes are on opposite sides of the product Channel attached, wherein the device comprises at least one pair of electrodes.
  • Opposing electrodes lead to the formation of relatively homogeneous fields, with im Essentially parallel field lines perpendicular to the product flow.
  • the channels are provided to produce food-safe dielectric material, since this is also the insulation of the electrodes.
  • the channels are also possible to use other materials, especially ceramics to use for the channel.
  • the product-carrying channel in the Cross section be rectangular. Large cross sections can be made possible, what guaranteed a high product.
  • too inhomogeneous liquids, e.g. enriched with fruit or pieces of fruit Food fluids are transported without causing unwanted constipation comes.
  • the corners of the channel are preferably rounded to prevent them from moving Product settles there, which ensures the cleanliness of the product channel longer can be and the cleaning is simplified.
  • Such a channel shape is suitable therefore also for in-process cleaning (CIP).
  • the product-carrying channel can expediently consist of several, in particular, of two, essentially structurally identical duct parts.
  • the channel can for example consist of two in Essentially U-shaped channel molded parts exist.
  • Such components are simple and also open the channel and access the Electrodes in case of maintenance.
  • the cross section of the product-carrying Channel so large that the product is gentle due to air pressure or low pump force can be promoted and by the device, in particular from bottom to top, flows.
  • the electrodes are preferably made of stainless steel, but they are all Food-friendly and rustproof electrically conductive materials can be used. Stainless steel guarantees long lifetimes and therefore long maintenance intervals as a common material, it is also relatively inexpensive.
  • the electrodes preferably have a large, oval shape, which is calculated in this way is that inside the channel is a substantially homogeneous electric field is built up, which enables an energy transfer into the product medium flow. who the corresponds to different existing speeds of the product in the channel. At the Edge of the channel where the product speeds are slower becomes a correspondingly lower electric field than in the middle, where the Product speeds are highest. Due to the shape of the electrode ensures that the energy input per product volume element and per dwell time in the device is essentially the same for each product volume element the product flow is heated uniformly everywhere. This also leads to one simplified process control. One understands here as a product volume element small product volume in the device. The sum of all Product volume elements result in the total product flow.
  • Another preferred embodiment of the electrode shape includes that the edges of the Electrodes are rounded on the side facing away from the duct wall. This prevents the formation of local strong electric fields that lead to overheating of the Product in this area.
  • the edges of the electrodes - in particular in Combination with a duct, made of plastic or a duct from an equivalent Material - are thickened on the side facing the channel wall, while at the same time the channel wall has a recess corresponding to the thickening.
  • This enables a controlled fitting of the electrode into the channel wall.
  • the thickening in the corresponding recess This prevents especially by using food-safe silicone glue that Can accumulate product behind the electrode. It also ensures an accurate defined position of the electrode in the channel. This also ensures that the Channel real electric field essentially the previously simulated field equivalent.
  • the electrodes are advantageously replaced by at least one screw or one other traction enabling fastener with the outside of the connected to the product-carrying channel.
  • the alternating field generator which is used to apply the alternating field voltages to the Electrodes is required, preferably generates square-wave alternating voltages.
  • Frequency ranges from 100 kHz to 1000 kHz, and particularly preferably from 200 kHz to 500kHz suitable for the device.
  • Rectangular AC voltages have the Advantage that they result from a superposition of many frequencies (Fourier decomposition) put together.
  • the frequency spectrum ranges from the KHz to the MHz range. Due to the presence of the frequency spectrum, long-wave vibrations can occur are generated that have an even more homogeneous penetration and thus still achieve more uniform heating especially with inhomogeneous products.
  • the alternating field generator generates voltages of up to 1 kV, in particular Voltages of 500V, with currents in the range up to 100A, especially in the Range of 50-60A.
  • the relatively low voltage with at the same time relatively high Amperages have several advantages. First, there is the risk of sparking minimized by the low voltage. This is particularly advantageous if the Product gas bubbles are located.
  • the high currents allow the High energy transfer, which leads to efficient heating of the product. This also allows the channel cross-section to be chosen large enough to guarantee a high product throughput. At the same time, the length of the Device short, which keeps it compact and simplifies cleaning of the device.
  • the electrical properties mentioned can be carried out Standard power electronics components achieve what the device is inexpensive and makes it easy to maintain.
  • the interface between the alternating field generator and the electrode connections is designed so that you can use the alternating field generator without additional wiring can connect.
  • the alternating field generator is plugged on without tools.
  • Stiffening elements can preferably be used as protection against deformation of the dielectric channel material, may be arranged on the outside of the channel. By relative High pressures inside the product channel can lead to unwanted deformation of the channel come, and thus the shape of the electrical Fields affect negatively or the functionality of the device due to restrict leaks. Stiffening elements, in particular metal plates for example stainless steel, counteract such a possible deformation and are therefore conducive to a long service life of the device.
  • the product-carrying channel of several sealingly arranged one behind the other in the product flow direction Sub-units formed.
  • a subunit comprises at least one pair of electrodes, corresponding electrode connections and one corresponding to the number of electrode pairs Number of alternating field generators, each of these generators having its own Control. So you can the device depending on the product and thus depending Adapt the required heating output individually. The gradual interpretation of the The heating system with subunits connected in series also offers the Possibility of precise temperature control and regulation.
  • the subunits are advantageously made by a suitable means, e.g. Screws, clamped together, each between two subunits sealing agent can be inserted into a recess.
  • This recess can reside on at least one of the two device interfaces and the enclose the product-carrying channel.
  • a sealing agent e.g. an o-ring be used.
  • the different subunits can be taken apart so far, that the electrodes within the channel can be reached by hand.
  • the seal can also be used without achieve additional seals, especially by gluing.
  • the glue points can be reinforced by the fact that the above described on one interface There is a recess and one of the interfaces on the following subunit Forming the recess corresponding sealing cantilever is formed. By this measure prevents unwanted transverse forces on the glue points.
  • the device for heating Product streams further include a cleaning module.
  • a cleaning module To the regular required maintenance work includes cleaning the product-carrying duct.
  • a heating or Sterilization system can thus consist of several subunits and Cleaning units together. An embodiment of the two subunits is preferred each with 5 pairs of electrodes, with the subunits and Cleaning modules at the beginning and end of the entire heater unit are located.
  • the cleaning module advantageously comprises a product-carrying channel, especially made of stainless steel, which has essentially the same cross section as the Device and inside the product-carrying channel has a spray head that with a connection flange attached to the outside of the cleaning module stands and through which a cleaning medium, in particular water, through the spray head gets inside the product-carrying channel.
  • a cleaning medium in particular water
  • the Cleaning modules at least one through opening, substantially parallel to the Direction of the canal.
  • a tie rod the diameter of which is essentially that corresponds to the opening, several subunits can be strung together, center and tighten.
  • That located in the channel is located in the general moving product by a high-frequency electric field that is generated between two electrodes by an alternating field generator, heated and sterilized if necessary.
  • the electrodes are inside the product-carrying Channel.
  • the alternating electrical field enables deep penetration into the product immediate and evenly gentle heating, preferably of dielectric Materials.
  • the structure of solid components remains in the product, in particular of fruits or pieces of fruit, essentially preserved.
  • the process according to the invention prevents unnecessary loss of energy since there is no additional There is material between the electrode and the product and is therefore efficient energy-saving and productive. Furthermore, the response time with this method is extremely short, which has a positive effect on temperature control.
  • FIG. 1 shows the basic structure of the device 1 according to the invention in one perspective view.
  • the product-carrying channel 2 is by two in Essentially identical molded parts 3 and 4 assembled.
  • the two molded parts 3 and 4 are sealingly against each other and are usually glued together.
  • On the interface 5 between the molded parts 3 and 4 is a tongue and groove combination 6, in this example on the channel side of the molded parts. Through this Tongue and groove combination 6 increases the adhesive strength.
  • gluing is just one way the two channel molded parts 3 and 4 are closed together connect, these could also be connected to each other by screws 16.
  • the Channel molded parts 3 and 4 are made of food-safe dielectric material, such as for example PTFE, polysulfone or PEEK.
  • Electrodes 8 and 9 Inside the channel 2 are two on opposite side wall surfaces 7 in Essentially identical electrodes 8 and 9 attached. Usually these are Electrodes 8.9 made of stainless steel.
  • the electrodes 8,9 are external Electrode connections 10 and 11, usually made of aluminum or brass, electrically conductive, e.g. connected via clamping screws 12. In this Embodiment, the clamping screws 12 also serve to secure the Electrodes 8 and 9.
  • the electrode connections 10 and 11 are made using Contact tabs 13 (shown here only for electrode connection 11) on the here shown rectangular alternator connected.
  • the Kanafformmaschine 3 and 4 which may be due to relatively high pressures in the range of up to about 8 bar, especially 6 bar, are on the outside of the Channel shaped parts 3 and 4 stiffening plates 14 and 15 attached.
  • the stiffening plate 14 or 15 at least partially covers the wide and the narrow side of the channel molding 3 or 4, in this example the is covered by the electrode connection 10 or 11 covered area, so that Do not touch the stiffening plate and electrode connection.
  • a suitable material for Stiffening of the housing is, for example, stainless steel.
  • the device described above forms a sub-unit.
  • This subunit can be used connect other structurally identical sub-units to create a continuous product channel any length, depending on the desired product throughput. Out for this reason the device 1 has connection and sealing means to the Coupling sub-units to each other in a sealed manner.
  • a sealing agent can be inserted.
  • the recess lies in the example shown, directly on the product-carrying channel 2, but can in principle are located anywhere on the interface to the slave unit 17.
  • the recess 18 be formed only on one side of the sub-unit or on both sides.
  • the Channel parts each have at least one on the interface to the slave unit 17 existing, projecting bolts 19 and 20 on. These bolts 19 and 20 occur when two subunits are brought into corresponding recesses (not shown here) in the other subunit and thus center the two Subunits relative to each other.
  • rotatably mounted bolts are designated, whose axis of rotation essentially is aligned parallel to the cutting surface 17.
  • the bracket of the rotatably mounted Bolt 21 communicates with stiffening plates 14 and is nearby the cut surface 17 to the follower unit.
  • the second Interface 22 to another subsequent sub-unit there are counterparts 23 to the rotatably mounted bolts 21.
  • These are, like the rotatably mounted bolts 21 on the Stiffening plate 14 attached near the interface 22.
  • Identical rotatable stored bolts (not shown here) and counterparts 24 are also on the Stiffening plate 15 of the second channel molding 3, in this embodiment each rotatably mounted on one side at an interface 17 or 22
  • the rotatable mounted bolt 21 and the counterparts are used for mutual attachment of two successive subunits. The mechanism is described in the description of Figure 4 explained in more detail.
  • FIG. 2a and 2b show a detailed representation of an embodiment according to the invention of the electrodes.
  • FIG. 2a shows a section along the product stream 25 and parallel to the electrodes 8 and 9, while Figure 2b shows a section transverse to Product stream 25 at the level of the clamping screws 12 shows.
  • Figure 2a shows a plan view of the lower part of the device 1.
  • the electrode 8 has a flat shape, the sides parallel to Flow direction of the product stream 25 are rounded in the direction of the channel walls. This leads to an oval shape.
  • the rounding radius R1 is approximately half of the Depth Y of the electrode.
  • a rounding 26 of the electrodes 8 and 9 on their edges can be seen in FIG. 2b.
  • the electrodes 8 and 9 On the side facing the channel wall 7, the electrodes 8 and 9 have one Thickening 27, which in particular partially has a rounded shape with a radius R3, which corresponds approximately to the thickness z of the electrode.
  • the channel wall 7 On the electrodes 8 and 9 covered area, the channel wall 7 corresponds to the shape of the electrodes 8 and 9 except at 28 and 29, electrodes 8 and 9 being about halfway through them Thickness z are inserted into the channel wall 7. If necessary, however, the Electrodes 8 and 9 can also be completely embedded in the molded parts 3 and 4 or else possibly also lie on them.
  • the electrodes 8 and 9 are with the clamping screws 12 connected to the respective electrode connections 10 and 11.
  • FIG. 2b also shows the rounded corners 30 of the channel.
  • the rounding radius is R4 usually much smaller than half the height of the channel H.
  • the side rounding radius R1 of the electrodes 8 and 9 is approximately 0 mm to 225 mm, in particular 67.5 mm
  • FIG. 3 shows an alternative embodiment 31 of the invention Contraption.
  • the essentially identical design differs from previous embodiment in two points.
  • Electrode connection 11 of the first exemplary embodiment is the contact surface of the Electrode terminal 32 smaller in the second embodiment.
  • the electrode connection 32 is formed, not shown further essentially U-shaped and no longer lies on the channel molding at this point 4 on. This is also on the side opposite the alternating field generator Electrode connection 32 in comparison to electrode connection 11 (exemplary embodiment 1) abbreviated.
  • the fact that the contact surface of the electrode connection 32 on the Channel molding is smaller than in the first embodiment, can now Stiffening plate 33 are formed with a larger area and leads to a improved strength of the device 31 compared to the first embodiment.
  • the electrode connection belonging to the second electrode 8 is a the electrode terminal 32 has an equivalent shape. The same goes for the Stiffening plate 34 of the second channel molding 3.
  • embodiment 2 differs by a changed fastening and Way of contacting the electrodes with the channel moldings or Electrode connections, the attachment of the electrodes from the contact be separated.
  • the electrodes are fastened with electrode fastening screws 35 attached to the channel molded parts 3 and 4 without the electrode connections 32 touch.
  • the electrical contact between the electrodes and the Electrode connection 33 is made using contact means, such as six here Screws 36 made.
  • This embodiment has the advantage that in In case of defective electrode connections the electrodes can remain in place or. vice versa, which simplifies repair work.
  • the dimensions correspond approximately to the dimensions of the first embodiment.
  • Figure 4 shows an overall perspective view of three connected in series Subunits 1 of the first embodiment.
  • the three connected in series Subunits 1 are supplemented at the ends 37 and 38 by connecting pipe pieces 39.
  • At the interfaces 17 to the respective subsequent subunits or Connection pipe piece 39 can be seen, as by inserting the rotatable mounted bolts 21 in the corresponding counterpart 23 the subunits together can be attached and also the start or end part unit with the respective Connection pipe piece 39 can be connected.
  • one uses three consecutive subunits, however, depending on Application of the product flow heater any number of sub-units lined up become.
  • Figure 5 shows an alternative to stringing identical sub-units.
  • the number of desired electrode pairs can also be the length of a channel molding 40 adjust.
  • five Arrange electrodes 41 to 45 in a channel molding 40 correspond to the dimensions in FIGS. 2a and 2b described electrodes 8 and 9.
  • the Electrodes 41 to 45 a distance of about 50 mm.
  • the variety of holes 46 in the wall of the channel molding 40 are required for fastening the two Duct fittings used with the help of screws. Alternatively, the canal walls also glue.
  • FIG. 6 shows the use of the molded parts, as described in FIG. 5, in one Product stream heater.
  • molded parts 47 with three electrodes (not shown) used.
  • Regarding the shape of the electrode terminals 32 and Stiffening plate 33 became the second embodiment as shown in Figure 3 used.
  • the device is supplemented by attached at both ends Cleaning modules 48 and 49, which are explained in more detail in the following Figure 7. Following the cleaning modules 48, 49, there are the connecting pipe pieces 39.
  • the cleaning modules 48, 49 are by means of two tie rods 50 and 51, tense together. With the help of this drawbar device, the three Elements, the two cleaning modules and the sub-unit, sealing and centered connected with each other.
  • FIG. 7 shows a perspective detailed illustration of the cleaning module 48 shown embodiment, the cleaning module consists of a single molded part 52, with the possibility of the body of the cleaning module 48 of two or more essentially identical molded parts reassemble.
  • the molded part 52 defines a channel 53, the shape of the Essentially the shape of the product-carrying channel 2 of the subunits 1 and 31 equivalent. With 53 centering recesses are designated, which serve the Cleaning module 48 with a following sub-unit 1 or 31, on which Centering bolts 19 and 20 are to be aligned.
  • On the sides of the molded part 52 there are guide openings 55 through which the tie rods 50 and 51 respectively be put through.
  • a cleaning agent-carrying can be attached to the connecting flange 56 Pipe or a hose carrying detergent can be connected. Through a in the existing cleaning module molding 52 channel (not shown), this occurs Detergent in the spray head 57 and is present in the spray head Openings sprayed into the interior of the channel 53 or product-carrying channel 2. in the An embodiment shows a central spray head; however, it is quite conceivable, several small spray heads, especially at the edge of the channel 53 train.
  • Product flow heater with two five pairs of electrodes connected in series as shown particularly effective. At the end of product entry and on A cleaning module and an additional one are attached to the product outlet end Cleaning module in the middle of the device, i.e. after five consecutive Electrode pairs, arranged. It is irrelevant for the use whether the Device is used lying or standing, whereby the standing use Footprint of the system is smaller.
  • a storage container 60 is the one enriched with fruits or pieces of fruit Liquid food product to be heated. This is done with the help of a pump 61 after opening a valve 62 in a channel 63 set in motion. To Passing through a curved connector 64, the liquid enters the Product flow heater 65 a. As can be seen, the product is in the bottom Product flow heater 65 fed and then flows substantially vertically above through the product flow heater 65. The product flows to a total of 10 Electrode pairs 67 to 76 over. Each pair of electrodes is on one Rectangle generator 77 to 86 connected.
  • Be on the electrodes 67 to 76 typically square wave voltages of about 500 V with simultaneous Current strengths of about 50 to 60 A and frequencies of about 200 to 500 KHz applied. This creates strong alternating electrical fields in the product-carrying channel, which Heat the product stream. Usually in the given example Heating rates of around 80 ° C / min. achieved and maximum temperatures of approximately 130 ° C. After the heating step, the product stream flows into the outflow channel 87 and can be further processed in a subsequent apparatus (not shown).
  • the system can be switched off at regular intervals and the Product flow heater 65 cleaned using the existing cleaning modules 88 to 90 become.
  • the Disassemble product stream heaters relatively quickly by using the Pushes cleaning modules away, allowing easy access to the electrodes becomes.

Landscapes

  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Seasonings (AREA)
  • Resistance Heating (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Disintegrating Or Milling (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Preparation Of Fruits And Vegetables (AREA)
  • Jellies, Jams, And Syrups (AREA)

Abstract

The device has a product carrying channel (2) through which the product flows and an arrangement for producing high frequency electrical alternating fields with electrodes (8,9), electrode connections (10,11) and an a.c. field generator. The electrodes are arranged in the product carrying channel. The electrodes are arranged on opposite sides of the channel and the device has at least one electrode pair. An independent claim is also included for the following: (a) a method of heating product flows, especially flows of fruit or food product flows containing pieces of fruit.

Description

Die Erfindung betrifft eine Vorrichtung zum Erhitzen von Produktströmen, insbesondere von Frucht oder Fruchtstücke enthaltenden Lebensmittelproduktströmen, mit einem produktführenden Kanal, durch den das Produkt hindurchströmt und mit einer Vorrichtung zum Erzeugen von elektrischen Wechselfeldem, die Elektroden, Elektrodenanschlüsse und einen Wechselfeldgenerator umfasst.The invention relates to a device for heating product streams, in particular of food product streams containing fruit or pieces of fruit, with a product-carrying channel through which the product flows and with a Device for generating alternating electrical fields, the electrodes, Includes electrode connections and an alternating field generator.

Vorrichtungen dieser Art sind im Stand der Technik bekannt. Allgemein dienen sie dazu, Produkte, insbesondere Lebensmittelprodukte, so zu erhitzen, dass sich Bakterien abtöten lassen und sich somit eine längere Haltbarkeit des Produktes ergibt. Wichtig dabei ist, dass sich Qualitätsmerkmale wie Farbe, Geschmack, Konsistenz und Textur nicht wesentlich verändern. Dies ist insbesondere bei Frucht oder Fruchtstücke enthaltenden Lebensmittelprodukten von Bedeutung, da die Struktur der Früchte durch Hitze leicht zerstört werden kann. Die Herausforderung liegt daher darin, Prozessmethoden und Vorrichtungen zu entwickeln, bei denen die gewünschten Eigenschaften des Produkts so gut wie möglich erhalten bleiben.Devices of this type are known in the prior art. Generally they serve Heat products, especially food products, so that bacteria are present Can be killed and the product will have a longer shelf life. Important is that there are quality features like color, taste, consistency and texture not change significantly. This is particularly the case with fruit or pieces of fruit containing food products important because of the structure of the fruit Heat can easily be destroyed. So the challenge is To develop process methods and devices in which the desired Properties of the product are preserved as much as possible.

Eine Vorrichtung zum Erhitzen und Sterilisieren von Produktströmen ist z.B. aus der US 6 246 040 B1 bekannt. In der dort beschriebene Vorrichtung werden in Glas oder Teflonröhren bewegte Produktströme durch starke elektrische Wechselfelder dielektrisch erwärmt. Hierbei werden Radiofrequenzfelder an außerhalb der Röhren befindliche Elektroden angelegt. Polare bzw. elektrisch asymmetrische Moleküle in dem zu erhitzenden Produkt werden dadurch in Bewegung versetzt, dass sie sich im elektrischen Feld ausrichten wollen. Somit erzeugt die Molekülbewegung Wärme. Diese Erhitzungsmethode wird im Folgenden als Radiofrequenzheizen bezeichnet. Eine solche Anlage ermöglicht schnelles und homogenes Erhitzen auch in nicht homogenen Produktmischungen. In diesen Systemen geht jedoch ein großer Teil der Energie in den Wandungen der Röhren verloren, sodass die Effizienz der Vorrichtung gering ist. Des weiteren besteht durch das Vorhandensein von hohen Spannungen, die nur mit Hilfe komplexer Leistungselektronik erzeugt werden können, die Gefahr des Funkenschlags Aus diesen Gründen ist die Produktivität solcher Vorrichtungen relativ gering und somit die Verfahrenskosten entsprechend hoch.A device for heating and sterilizing product streams is e.g. from the US 6 246 040 B1 known. In the device described there, glass or Teflon tubes move product flows through strong electrical alternating fields dielectric heated. Here, radio frequency fields are located on the outside of the tubes Electrodes applied. Polar or electrically asymmetric molecules in the to heating product are set in motion by being in the want to align electrical field. The molecular movement thus generates heat. This The heating method is referred to below as radio frequency heating. Such System enables fast and homogeneous heating even in non-homogeneous Product mixtures. In these systems, however, a large part of the energy goes into the The walls of the tubes are lost, so that the efficiency of the device is low. Of further exists due to the presence of high voltages that only with the help complex power electronics can be generated, the risk of sparks For these reasons, the productivity of such devices is relatively low and thus the procedural costs are correspondingly high.

In einer anderen bekannten Vorrichtung bedient man sich der Methode des ohmschen Erhitzens. Hierbei fließt ein elektrischer Strom durch das zu erhitzende Medium. Dabei werden niederfrequente Spannungsquellen (bis zu 60Hz) benutzt. Die Elektroden stehen im direkten Kontakt mit dem Produkt, womit Energieverluste gering gehalten werden. Allerdings ist dieses Verfahren nur bei homogenen Produktströmen erfolgreich anwendbar. Da die Produktkanäle relativ eng sein müssen (ca. 1 cm), ist dieses Verfahren nur unter Schwierigkeiten bei z.B. mit Fruchtstücken angereicherten Fluiden verwendbar und die erzielten Durchflussraten sind gering. Außerdem besteht die Gefahr der Elektrolyse mit Ausbildung von Wasserstoff. Dies führt zu einer relativ kurzen Lebenszeit der Elektroden, die zumeist aus Kohlenstoff gefertigt sind.Another known device uses the ohmic method Heating. An electrical current flows through the medium to be heated. there low-frequency voltage sources (up to 60Hz) are used. The electrodes are in place in direct contact with the product, which keeps energy losses to a minimum. However, this process is only successful with homogeneous product flows applicable. Since the product channels must be relatively narrow (approx. 1 cm), this is Process only with difficulty with e.g. fluids enriched with pieces of fruit can be used and the flow rates achieved are low. There is also a risk electrolysis with the formation of hydrogen. This leads to a relatively short one Lifetime of the electrodes, which are mostly made of carbon.

Es ist somit Aufgabe der Erfindung, eine Vorrichtung und ein Verfahren anzugeben, die es ermöglichen, Produktströme, und dabei auch inhomogen Produkte, insbesondere Frucht oder Fruchtstücke enthaltende Fluide, effizient, energiesparend und kostengünstig bei hohem Produktdurchsatz sicher und schonend zu erhitzen oder zu sterilisieren.It is therefore an object of the invention to provide an apparatus and a method which allow product streams, and inhomogeneous products, in particular Fluids containing fruit or fruit pieces, efficient, energy saving and To heat or to heat gently and economically with high product throughput sterilize.

Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 und durch ein Verfahren mit den Merkmalen des Anspruchs 17 gelöst.This object is achieved by a device having the features of claims 1 and solved by a method with the features of claim 17.

Bei der erfindungsgemäßen Vorrichtung sind Elektroden im Inneren des produktführenden Kanals angeordnet, wobei ein zwischen den Elektroden durch einen Wechselfeldgenerator erzeugtes hochfrequentes elektrisches Feld das sich in dem Kanal befindliche Produkt erhitzt und gegebenenfalls sterilisiert. Unter hochfrequentem elektrischen Feld versteht man dabei Felder mit Frequenzen, die höher als die Netzfrequenz sind und dabei insbesondere im kHz-MHz Bereich liegen. Das elektrische Wechselfeld ermöglicht tief in das Produkt eindringendes, unmittelbares und uniformes Erhitzen, vorzugsweise von dielektrischen Materialien, wie z.B. Wassermolekülen. Dabei werden insbesondere auch inhomogene Produkte, wie mit Früchten oder Fruchtstücken angereicherte Lebensmittelfluide, schonend erhitzt. Die erfindungsgemäße Lösung verhindert unnötigen Energieverlust, da kein zusätzliches Material, wie beispielsweise ein Dielektrikum, zwischen Elektrode und Produkt vorhanden ist und ermöglicht so eine effiziente, energiesparende und produktive. Nutzung. Weiterhin ist bei einer solchen Vorrichtung die Ansprechzeit kurz, was sich positiv auf die Temperaturkontrolle auswirkt.In the device according to the invention electrodes are inside the arranged product-carrying channel, one between the electrodes through a Alternating field generator generates high-frequency electric field that is in the channel located product heated and sterilized if necessary. Under high frequency electric field is understood to mean fields with frequencies higher than that Mains frequency and are in particular in the kHz-MHz range. The electrical Alternating field enables the product to penetrate deeply, directly and uniformly Heating, preferably of dielectric materials such as e.g. Water molecules. there are especially inhomogeneous products, such as with fruit or pieces of fruit fortified food fluids, gently heated. The solution according to the invention prevents unnecessary energy loss, since no additional material, such as there is a dielectric between the electrode and the product, thus enabling one efficient, energy-saving and productive. Use. Furthermore, such Device the response time short, which has a positive effect on the temperature control.

Dadurch, dass die Elektroden sich im direkten Kontakt mit dem Produkt befinden, findet zusätzlich zum Radiofrequenzheizen auch ohmsches Erhitzen statt, da ein elektrischer Strom durch das Produkt fließen kann. Dies erhöht zusätzlich die Effizienz der Vorrichtung.Because the electrodes are in direct contact with the product in addition to radio frequency heating, ohmic heating instead, since an electrical one Current can flow through the product. This also increases the efficiency of the Contraption.

Vorzugsweise sind die Elektroden auf gegenüberliegenden Seiten des produktführenden Kanals angebracht, wobei die Vorrichtung mindestens ein Elektrodenpaar umfasst. Gegenüberliegende Elektroden führen zur Ausbildung relativ homogener Felder, mit im Wesentlichen parallelen, senkrecht zum Produktstrom stehenden, Feldlinien.Preferably, the electrodes are on opposite sides of the product Channel attached, wherein the device comprises at least one pair of electrodes. Opposing electrodes lead to the formation of relatively homogeneous fields, with im Essentially parallel field lines perpendicular to the product flow.

In einer vorteilhaften Ausführung der Erfindung ist es vorgesehen die Kanäle aus lebensmittelechtem dielektrischem Material herzustellen, da dieses auch das Isolieren der Elektroden ermöglicht. Es ist allerdings durchaus auch möglich, andere Materialien, insbesondere Keramik, für den Kanal zu verwenden.In an advantageous embodiment of the invention, the channels are provided to produce food-safe dielectric material, since this is also the insulation of the electrodes. However, it is also possible to use other materials, especially ceramics to use for the channel.

In einer vorteilhaften Ausführung der Vorrichtung kann der produktführenden Kanal im Querschnitt rechteckig sein. Es lassen sich dabei große Querschnitte ermöglichen, was einen hohen Produktes gewährleistet. Außerdem können in großen Kanälen auch inhomogene Flüssigkeiten, wie z.B. mit Frucht oder Fruchtstücken angereicherte Lebensmittelfluide befördert werden, ohne dass es zu unerwünschten Verstopfungen kommt. Die Ecken des Kanals sind bevorzugt abgerundet, um zu verhindern, dass sich Produkt dort absetzt, womit die Sauberkeit des Produktkanals länger gewährleistet werden kann und das Reinigen vereinfacht wird. Eine solche Kanalform eignet sich daher auch für prozessintemes Reinigen (CIP).In an advantageous embodiment of the device, the product-carrying channel in the Cross section be rectangular. Large cross sections can be made possible, what guaranteed a high product. In addition, in large channels too inhomogeneous liquids, e.g. enriched with fruit or pieces of fruit Food fluids are transported without causing unwanted constipation comes. The corners of the channel are preferably rounded to prevent them from moving Product settles there, which ensures the cleanliness of the product channel longer can be and the cleaning is simplified. Such a channel shape is suitable therefore also for in-process cleaning (CIP).

Zweckmäßigerweise kann der produktführende Kanal aus mehreren, insbesondere aus zwei, im Wesentlichen baugleichen Kanalformteilen zusammengesetzt sein. Im Falle eines quadratischen Querschnitts kann der Kanal beispielsweise aus zwei im Wesentlichen U-förmigen Kanalformteilen bestehen. Solche Bauteile sind einfach herzustellen und ermöglichen außerdem ein Öffnen des Kanals und Zugang zu den Elektroden im Falle von Wartungsarbeiten.The product-carrying channel can expediently consist of several, in particular, of two, essentially structurally identical duct parts. In the event of a square cross section, the channel can for example consist of two in Essentially U-shaped channel molded parts exist. Such components are simple and also open the channel and access the Electrodes in case of maintenance.

In einer besonders vorteilhaften Ausführung ist der Querschnitt des produktführenden Kanals so groß, dass durch Luftdruck oder geringe Pumpenkraft das Produkt schonend gefördert werden kann und durch die Vorrichtung, insbesondere von unten nach oben, fließt. Durch die schonende Förderung des Produkts im produktführenden Kanals wird, insbesondere bei der Förderung von Frucht oder Fruchtstücke enthaltenden Produkten eine hohe visuelle und geschmackliche Qualität des Produkts ermöglicht. In a particularly advantageous embodiment, the cross section of the product-carrying Channel so large that the product is gentle due to air pressure or low pump force can be promoted and by the device, in particular from bottom to top, flows. By gently conveying the product in the product-carrying channel, especially when promoting fruit or products containing fruit pieces enables a high visual and taste quality of the product.

Die Elektroden werden bevorzugt aus Edelstahl hergestellt, es sind jedoch alle lebensmittelfreundlichen und rostfreien elektrisch leitende Materialien einsetzbar. Edelstahl garantiert dabei lange Lebenszeiten, somit lange Wartungsintervalle und ist außerdem als gängiges Material auch relativ kostengünstig.The electrodes are preferably made of stainless steel, but they are all Food-friendly and rustproof electrically conductive materials can be used. Stainless steel guarantees long lifetimes and therefore long maintenance intervals as a common material, it is also relatively inexpensive.

Die Elektroden haben bevorzugt eine großflächige und ovale Form, die so berechnet wird, dass im inneren des Kanals ein im Wesentlichen homogenes elektrisches Feld aufgebaut wird, das einen Energieübertrag in den Produktmittelstrom ermöglicht. der den verschiedenen vorhandenen Geschwindigkeiten des Produkts im Kanal entspricht. Am Rande des Kanals, wo die Produktgeschwindigkeiten langsamer sind, wird ein entsprechend niedrigeres elektrisches Feld erzeugt als in der Mitte, wo die Produktgeschwindigkeiten am höchsten sind. Durch die Elektrodenform wird somit gewährleistet, dass der Energieeintrag pro Produktvolumenelement und pro Verweilzeit in der Vorrichtung für jedes Produktvolumenelement im Wesentlichen gleich ist und sich der Produktstrom überall gleichmäßig erhitzt. Dies führt gleichzeitig zu einer vereinfachten Prozesskontrolle. Als Produktvolumenelement versteht man hierbei ein kleines, sich in der Vorrichtung befindliche Produktvolumen. Die Summe aller Produktvolumenelemente ergibt den totalen Produktstrom.The electrodes preferably have a large, oval shape, which is calculated in this way is that inside the channel is a substantially homogeneous electric field is built up, which enables an energy transfer into the product medium flow. who the corresponds to different existing speeds of the product in the channel. At the Edge of the channel where the product speeds are slower becomes a correspondingly lower electric field than in the middle, where the Product speeds are highest. Due to the shape of the electrode ensures that the energy input per product volume element and per dwell time in the device is essentially the same for each product volume element the product flow is heated uniformly everywhere. This also leads to one simplified process control. One understands here as a product volume element small product volume in the device. The sum of all Product volume elements result in the total product flow.

Eine weitere bevorzugte Ausführung der Elektrodenform beinhaltet, dass die Kanten der Elektroden auf der der Kanalwand abgewandten Seite abgerundet sind. Dies verhindert das Ausbilden von lokalen starken elektrischen Feldern, die zu Überhitzung des Produktes in diesem Bereich führen könnten.Another preferred embodiment of the electrode shape includes that the edges of the Electrodes are rounded on the side facing away from the duct wall. This prevents the formation of local strong electric fields that lead to overheating of the Product in this area.

Besonders vorteilhaft ist es, wenn die Kanten der Elektroden - insbesondere in Kombination mit einem Kanal, aus Kunststoff oder einem Kanal aus einem gleichwertigen Material - auf der der Kanalwand zugewandten Seite verdickt sind, wobei gleichzeitig in der Kanalwand eine der Verdickung entsprechende Ausnehmung vorhanden ist. Dies ermöglicht ein kontrolliertes Einpassen der Elektrode in die Kanalwand. Hierbei legt sich, wiederholbar, die Verdickung in die entsprechende Ausnehmung. Dabei verhindert man, insbesondere durch Verwendung von lebensmittelechtem Silikonkleber, dass sich Produkt hinter der Elektrode ansammeln kann. Außerdem gewährleistet dies eine genau definierte Position der Elektrode im Kanal. Dadurch wird auch erreicht, dass das im Kanal reell ausgebildete elektrische Feld dem vorher simulierten Feld im Wesentlichen entspricht. It is particularly advantageous if the edges of the electrodes - in particular in Combination with a duct, made of plastic or a duct from an equivalent Material - are thickened on the side facing the channel wall, while at the same time the channel wall has a recess corresponding to the thickening. This enables a controlled fitting of the electrode into the channel wall. Here lies repeatable, the thickening in the corresponding recess. This prevents especially by using food-safe silicone glue that Can accumulate product behind the electrode. It also ensures an accurate defined position of the electrode in the channel. This also ensures that the Channel real electric field essentially the previously simulated field equivalent.

Vorteilhafterweise werden die Elektroden durch mindestens eine Schraube oder ein anderes Zugkraft ermöglichendes Befestigungsmittel mit den außerhalb des produktführenden Kanals liegenden Elektrodenanschlüssen verbunden. Dabei ermöglicht die auftretende Kraft, die sich zwischen einer Elektrode und dem Elektrodenanschluss ausbildet, dass die Elektrode auf die Kanalwand aufgedrückt und festgehalten wird, andererseits gewährleistet dies auch die einfache Austauschbarkeit, falls erforderlich.The electrodes are advantageously replaced by at least one screw or one other traction enabling fastener with the outside of the connected to the product-carrying channel. there enables the force occurring between an electrode and the Electrode connection forms that the electrode is pressed onto the channel wall and on the other hand, this also ensures easy interchangeability, if necessary.

Der Wechselfeldgenerator, der zum Anlegen der Wechselfeldspannungen an die Elektroden benötigt wird, erzeugt bevorzugt Rechteckwechselspannungen. Hierbei sind Frequenzbereiche von 100kHz bis 1000kHz, und besonders bevorzugt von 200kHz bis 500kHz für die Vorrichtung geeignet. Rechteckwechselspannungen haben dabei den Vorteil, dass sie sich aus einer Überlagerung vieler Frequenzen (Fourierzerlegung) zusammensetzen. Das Frequenzspektrum reicht dabei vom KHz- bis zum MHz-Bereich. Durch das Vorhandensein des Frequenzspektrums können langwellige Schwingungen erzeugt werden, die eine noch homogenere Durchdringung und damit noch gleichmäßigere Erhitzung speziell bei inhomogenen Produkten erreichen.The alternating field generator, which is used to apply the alternating field voltages to the Electrodes is required, preferably generates square-wave alternating voltages. Here are Frequency ranges from 100 kHz to 1000 kHz, and particularly preferably from 200 kHz to 500kHz suitable for the device. Rectangular AC voltages have the Advantage that they result from a superposition of many frequencies (Fourier decomposition) put together. The frequency spectrum ranges from the KHz to the MHz range. Due to the presence of the frequency spectrum, long-wave vibrations can occur are generated that have an even more homogeneous penetration and thus still achieve more uniform heating especially with inhomogeneous products.

Weiterhin erzeugt der Wechselfeldgenerator Spannungen von bis zu 1 kV, insbesondere Spannungen von 500V, mit Stromstärken im Bereich von bis zu 100A, insbesondere im Bereich von 50-60A. Die relativ geringe Spannung mit gleichzeitig relativ hohen Stromstärken bringt mehrere Vorteils. Zum Einen wird das Risiko des Funkenschlags durch die geringe Spannung minimiert. Dies ist besonders vorteilhaft, wenn sich im Produkt Gasblasen befinden. Zum anderen ermöglichen die hohen Stromstärken die Übertragung hoher Energien, was zum effizienten Erhitzen des Produkts führt. Außerdem kann dadurch auch der Kanalquerschnitt groß genug gewählt werden, um einen hohen Produktdurchsatz zu garantieren. Gleichzeitig bleibt somit die Länge der Vorrichtung kurz, was sie kompakt hält und das Reinigen der Vorrichtung vereinfacht. Die genannten elektrischen Eigenschaften lassen sich durch Standardleistungselektronikbauteile erreichen, was die Vorrichtung kostengünstig und wartungsfreundlich realisierbar macht.Furthermore, the alternating field generator generates voltages of up to 1 kV, in particular Voltages of 500V, with currents in the range up to 100A, especially in the Range of 50-60A. The relatively low voltage with at the same time relatively high Amperages have several advantages. First, there is the risk of sparking minimized by the low voltage. This is particularly advantageous if the Product gas bubbles are located. On the other hand, the high currents allow the High energy transfer, which leads to efficient heating of the product. This also allows the channel cross-section to be chosen large enough to guarantee a high product throughput. At the same time, the length of the Device short, which keeps it compact and simplifies cleaning of the device. The electrical properties mentioned can be carried out Standard power electronics components achieve what the device is inexpensive and makes it easy to maintain.

Die Schnittstelle zwischen dem Wechselfeldgenerator und den Elektrodenanschlüssen ist so ausgelegt, dass man den Wechselfeldgenerator ohne zusätzliche Verkabelung anschließen kann. In einer besonders einfachen und damit wartungsfreundlichen Ausführungsform wird der Wechselfeldgenerator werkzeugfrei aufgesteckt.The interface between the alternating field generator and the electrode connections is designed so that you can use the alternating field generator without additional wiring can connect. In a particularly simple and therefore easy to maintain Embodiment, the alternating field generator is plugged on without tools.

Vorzugsweise können Versteifungselemente, als Schutz gegen Verformung des dielektrischen Kanalmaterials, auf der Kanalaußenseite angeordnet sein. Durch relativ hohe Drücke im Inneren des Produktkanals kann es unter Umständen zu einer unerwünschten Verformung des Kanals kommen, und somit die Form der elektrischen Felder negativ beeinflussen oder die Funktionstüchtigkeit der Vorrichtung aufgrund undichter Stellen beschränken. Versteifungselemente, insbesondere Metallplatten aus beispielsweise Edelstahl, wirken einer solchen eventuellen Verformung entgegen und sind somit förderlich für eine lange Lebensdauer der Vorrichtung.Stiffening elements can preferably be used as protection against deformation of the dielectric channel material, may be arranged on the outside of the channel. By relative High pressures inside the product channel can lead to unwanted deformation of the channel come, and thus the shape of the electrical Fields affect negatively or the functionality of the device due to restrict leaks. Stiffening elements, in particular metal plates for example stainless steel, counteract such a possible deformation and are therefore conducive to a long service life of the device.

In einer weiteren erfindungsgemäßen Ausführungsform wird der produktführende Kanal von mehreren in Produktstromrichtung hintereinander dichtend angeordneten Teileinheiten gebildet. Eine Teileinheit umfasst dabei mindestens ein Elektrodenpaar, entsprechende Elektrodenanschlüsse und eine der Elektrodenpaarzahl entsprechende Anzahl an Wechselfeldgeneratoren, wobei jeder dieser Generatoren seine eigene Steuerung hat. Somit kann man die Vorrichtung je nach Produkt und somit je nach benötigter Erhitzungsleistung individuell anpassen. Die stufenweise Auslegung der Erhitzungsanlage mit hintereinander geschalteten Teileinheiten bietet außerdem die Möglichkeit einer präzisen Temperaturkontrolle und -regelung.In a further embodiment according to the invention, the product-carrying channel of several sealingly arranged one behind the other in the product flow direction Sub-units formed. A subunit comprises at least one pair of electrodes, corresponding electrode connections and one corresponding to the number of electrode pairs Number of alternating field generators, each of these generators having its own Control. So you can the device depending on the product and thus depending Adapt the required heating output individually. The gradual interpretation of the The heating system with subunits connected in series also offers the Possibility of precise temperature control and regulation.

Die Teileinheiten werden dazu in vorteilhafter Weise durch ein geeignetes Mittel, wie z.B. Schrauben, miteinander verspannt, wobei jeweils zwischen zwei Teileinheiten ein abdichtendes Mittel in eine Ausnehmung eingefügt werden kann. Diese Ausnehmung kann sich auf mindestens einer der beiden Vorrichtungsschnittstellen befinden und den produktführenden Kanal umschließen. Als abdichtendes Mittel kann hierbei z.B. ein O-Ring verwendet werden. Im Falle von benötigten Wartungsarbeiten, wie der Austausch der Elektroden, lassen sich die verschiedenen Teileinheiten soweit auseinander nehmen, dass die Elektroden innerhalb des Kanals mit der Hand erreicht werden können.For this purpose, the subunits are advantageously made by a suitable means, e.g. Screws, clamped together, each between two subunits sealing agent can be inserted into a recess. This recess can reside on at least one of the two device interfaces and the enclose the product-carrying channel. As a sealing agent, e.g. an o-ring be used. In the event of required maintenance work, such as replacement of the electrodes, the different subunits can be taken apart so far, that the electrodes within the channel can be reached by hand.

Alternativ lässt sich, insbesondere bei Kanälen aus Kunststoff die Abdichtung auch ohne zusätzliche Dichtungen, insbesondere durch Verkleben, erreichen. Die Klebestellen können dadurch verstärkt werden, dass auf der einen Schnittstelle die oben beschrieben Ausnehmung vorhanden ist und auf der Schnittstelle der folgenden Teileinheit eine der Form der Ausnehmung entsprechende abdichtende Überhöhung ausgebildet ist. Durch diese Maßnahme werden unerwünschte Querkräfte auf die Klebestellen verhindert.Alternatively, especially with plastic channels, the seal can also be used without achieve additional seals, especially by gluing. The glue points can be reinforced by the fact that the above described on one interface There is a recess and one of the interfaces on the following subunit Forming the recess corresponding sealing cantilever is formed. By this measure prevents unwanted transverse forces on the glue points.

In einer bevorzugten Ausführungsform kann die Vorrichtung zum Erhitzen von Produktströmen weiterhin ein Reinigungsmodul umfassen. Zu den regelmäßig benötigten Wartungsarbeiten gehört das Reinigen des produktführenden Kanals. Durch eine dauerhaft integrierte Reinigungsanlage kann dieser Arbeitsschritt ohne Verzögerung, wenn benötigt oder geplant, durchgeführt werden. Eine Erhitzungs- bzw. Sterilisierungsanlage kann sich somit aus mehreren Teileinheiten und Reinigungseinheiten zusammen. Bevorzugt wird eine Ausführung die zwei Teileinheiten mit jeweils 5 Elektrodenpaaren umfasst, wobei sich zwischen den Teileinheiten und jeweils am Anfang und dem Ende der gesamten Erhitzereinheit Reinigungsmodule befinden.In a preferred embodiment, the device for heating Product streams further include a cleaning module. To the regular required maintenance work includes cleaning the product-carrying duct. By a permanently integrated cleaning system can do this step without Delay if needed or planned to be carried out. A heating or Sterilization system can thus consist of several subunits and Cleaning units together. An embodiment of the two subunits is preferred each with 5 pairs of electrodes, with the subunits and Cleaning modules at the beginning and end of the entire heater unit are located.

Günstigerweise umfasst das Reinigungsmodul einen produktführenden Kanal, insbesondere aus Edelstahl, der im Wesentlichen den gleichen Querschnitt hat wie die Vorrichtung und im Inneren des produktführenden Kanals einen Sprühkopf besitzt, der mit einem außen am Reinigungsmodul angebrachten Anschlussflansch in Verbindung steht und durch den ein Reinigungsmedium, insbesondere Wasser, durch den Sprühkopf ins Innere des produktführenden Kanals gelangt. Mit Hilfe eines solchen Reinigungsmodul kann somit der produktführende Kanal gründlich gereinigt werden und trägt so zur hygienische Qualität des zu erhitzenden Produkts bei.The cleaning module advantageously comprises a product-carrying channel, especially made of stainless steel, which has essentially the same cross section as the Device and inside the product-carrying channel has a spray head that with a connection flange attached to the outside of the cleaning module stands and through which a cleaning medium, in particular water, through the spray head gets inside the product-carrying channel. With the help of one Cleaning module, the product-carrying duct can thus be cleaned thoroughly thus contributes to the hygienic quality of the product to be heated.

In einer bezüglich der Aneinanderreihung bevorzugte Ausführungsform beinhalten die Reinigungsmodule mindestens eine durchgehende Öffnung, im Wesentlichen parallel zur Richtung des Kanals. Mit Hilfe einer Zugstange, deren Durchmesser im Wesentlichen dem der Öffnung entspricht, lassen sich mehrere Teileinheiten aneinander reihen, zentrieren und zusammenspannen.In a preferred embodiment with regard to the alignment, the Cleaning modules at least one through opening, substantially parallel to the Direction of the canal. Using a tie rod, the diameter of which is essentially that corresponds to the opening, several subunits can be strung together, center and tighten.

Beim erfindungsgemäßen Verfahren wird das sich in dem Kanal befindliche, sich im allgemeinen bewegende Produkt durch ein hochfrequentes elektrisches Feld, das zwischen zwei Elektroden durch einen Wechselfeldgenerator erzeugte wird, erhitzt und gegebenenfalls sterilisiert. Dabei liegen die Elektroden im Inneren des produktführenden Kanals. Das elektrische Wechselfeld ermöglicht tief in das Produkt eindringendes, unmittelbares und gleichmäßig schonendes Erhitzen, vorzugsweise von dielektrischen Materialien. Insbesondere bleibt dabei die Struktur von festen Bestandteilen im Produkt, insbesondere von Früchten oder Fruchtstücken, im Wesentlichen erhalten. Das enindungsgemäße Verfahren verhindert unnötigen Energieverlust, da kein zusätzliches Material zwischen Elektrode und Produkt vorhanden ist und ist daher effizient, energiesparend und produktiv. Weiterhin ist bei diesem Verfahren die Ansprechzeit extrem kurz, was sich positiv auf die Temperaturkontrolle auswirkt.In the method according to the invention, that located in the channel is located in the general moving product by a high-frequency electric field that is generated between two electrodes by an alternating field generator, heated and sterilized if necessary. The electrodes are inside the product-carrying Channel. The alternating electrical field enables deep penetration into the product immediate and evenly gentle heating, preferably of dielectric Materials. In particular, the structure of solid components remains in the product, in particular of fruits or pieces of fruit, essentially preserved. The The process according to the invention prevents unnecessary loss of energy since there is no additional There is material between the electrode and the product and is therefore efficient energy-saving and productive. Furthermore, the response time with this method is extremely short, which has a positive effect on temperature control.

Ausführungsformen der vorliegenden erfindungsgemäßen Vorrichtung sowie des erfindungsgemäßen Verfahrens werden im Folgenden anhand der anliegenden Figuren erläutert. Dabei zeigt

Figur 1
eine perspektivische Ansicht einer ersten Ausführungsform der erfindungsgemäßen Vorrichtung,
Figur 2a
eine Detaildarstellung einer in die Kanalwand eingebetteten Elektrode in Draufsicht,
Figur 2b
eine Detaildarstellung einer in die Kanalwand eingebeteten Elektrode im Querschnitt,
Figur 3
eine perspektivische Ansicht einer zweiten Ausführungsform der erfindungsgemäßen Vorrichtung,
Figur 4
eine perspektivische Gesamtansicht eines Produktstromerhitzers mit mehreren hintereinander geschalteten Teileinheiten,
Figur 5
ein Ausführungsbeispiel einer kanalformenden Halbschale mit fünf Elektroden,
Figur 6
eine perspektivische Ansicht eines Reinigungsmoduls, und
Figur 7
eine perspektivische Gesamtansicht einer Produktstromerhitzers mit mehreren hintereinander geschalteten Teileinheiten sowie zwei Reinigungsmodulen,
Figur 8
eine schematische Ansicht einer Produktionsanlage mit einem Produktstromerhitzer.
Embodiments of the present device according to the invention and of the method according to the invention are explained below with reference to the attached figures. It shows
Figure 1
2 shows a perspective view of a first embodiment of the device according to the invention,
Figure 2a
2 shows a detailed illustration of an electrode embedded in the channel wall in plan view,
Figure 2b
a detailed representation of an electrode embedded in the channel wall in cross section,
Figure 3
2 shows a perspective view of a second embodiment of the device according to the invention,
Figure 4
1 shows an overall perspective view of a product flow heater with a plurality of subunits connected in series,
Figure 5
an embodiment of a channel-forming half-shell with five electrodes,
Figure 6
a perspective view of a cleaning module, and
Figure 7
an overall perspective view of a product flow heater with a plurality of subunits connected in series and two cleaning modules,
Figure 8
is a schematic view of a production plant with a product flow heater.

Figur 1 zeigt den Grundaufbau der erfindungsgemäßen Vorrichtung 1 in einer perspektivischen Darstellung. Der produktführende Kanal 2 wird durch zwei im Wesentlichen baugleiche Formteile 3 und 4 zusammengesetzt. Die beiden Formteile 3 und 4 liegen dichtend aneinander an und werden üblicherweise miteinander verklebt. An der Grenzfläche 5 zwischen den Formteilen 3 und 4 ist eine Nut/Feder-Kombination 6, in diesem Beispiel auf der kanalseitigen Seite der Formteile, ausgebildet. Durch diese Nut/Feder-Kombination 6 wird die Klebefestigkeit erhöht. Es versteht sich von selbst, dass Kleben nur eine Möglichkeit ist die beiden Kanalformteile 3 und 4 miteinander zu verbinden, diese könnten auch durch Schrauben 16 miteinander verbunden werden. Die Kanalformteile 3 und 4 werden aus lebensmittelechtem dielektrischem Material, wie beispielsweise PTFE, Polysulfon oder PEEK, hergestellt.Figure 1 shows the basic structure of the device 1 according to the invention in one perspective view. The product-carrying channel 2 is by two in Essentially identical molded parts 3 and 4 assembled. The two molded parts 3 and 4 are sealingly against each other and are usually glued together. On the interface 5 between the molded parts 3 and 4 is a tongue and groove combination 6, in this example on the channel side of the molded parts. Through this Tongue and groove combination 6 increases the adhesive strength. It goes without saying that gluing is just one way the two channel molded parts 3 and 4 are closed together connect, these could also be connected to each other by screws 16. The Channel molded parts 3 and 4 are made of food-safe dielectric material, such as for example PTFE, polysulfone or PEEK.

Im Inneren des Kanals 2 sind auf gegenüberliegenden Seitenwandflächen 7 zwei im Wesentlichen formgleiche Elektroden 8 und 9 angebracht. Üblicherweise werden diese Elektroden 8,9 aus Edelstahl hergestellt. Die Elektroden 8,9 sind mit außenliegenden Elektrodenanschlüssen 10 und 11, üblicherweise aus Aluminium oder Messing, elektrisch leitendend, z.B. über Spannschrauben 12, verbunden. In diesem Ausführungsbeispiel dienen die Spannschrauben 12 auch der Befestigung der Elektroden 8 und 9. Die Elektrodenanschlüsse 10 und 11 werden mit Hilfe von Kontaktlaschen 13 (hier nur für Elektrodenanschluss 11 gezeigt) an den hier nicht gezeigten Rechteckwechselgenerator angeschlossen. Zum Verhindern einer Verformung der Kanafformteile 3 und 4, die sich evtl. durch relativ hohe Drücke, die im Bereich von bis zu ungefähr 8 Bar, insbesondere 6 Bar, liegen, ausbildet, sind an der Außenseite der Kanalformteile 3 und 4 Versteifungsplatten 14 und 15 angebracht. Diese können durch die Schrauben 16 oder durch Kleben an den Kanalformteilen 3 und 4 befestigt werden. In dem gezeigten Ausführungsbeispiel, in dem die Form des produktführenden Kanals 2 rechteckig ist, überdeckt die Versteifungsplatte 14 oder 15 zumindest zu einem Teil die breite und die schmale Seite des Kanalformteils 3 oder 4, wobei in diesem Beispiel die vom Elektrodenanschluss 10 oder 11 bedeckte Fläche ausgespart ist, so dass sich Versteifungsplatte und Elektrodenanschluss nicht berühren. Ein geeignetes Material zur Gehäuseversteifung stellt beispielsweise Edelstahl dar.Inside the channel 2 are two on opposite side wall surfaces 7 in Essentially identical electrodes 8 and 9 attached. Usually these are Electrodes 8.9 made of stainless steel. The electrodes 8,9 are external Electrode connections 10 and 11, usually made of aluminum or brass, electrically conductive, e.g. connected via clamping screws 12. In this Embodiment, the clamping screws 12 also serve to secure the Electrodes 8 and 9. The electrode connections 10 and 11 are made using Contact tabs 13 (shown here only for electrode connection 11) on the here shown rectangular alternator connected. To prevent deformation the Kanafformteile 3 and 4, which may be due to relatively high pressures in the range of up to about 8 bar, especially 6 bar, are on the outside of the Channel shaped parts 3 and 4 stiffening plates 14 and 15 attached. This can be done by the screws 16 or attached to the channel moldings 3 and 4 by gluing. In the exemplary embodiment shown, in which the shape of the product-carrying channel 2 is rectangular, the stiffening plate 14 or 15 at least partially covers the wide and the narrow side of the channel molding 3 or 4, in this example the is covered by the electrode connection 10 or 11 covered area, so that Do not touch the stiffening plate and electrode connection. A suitable material for Stiffening of the housing is, for example, stainless steel.

Die oben beschriebene Vorrichtung bildet eine Teileinheit. Diese Teileinheit lässt sich mit anderen baugleichen Teileinheiten verbinden, um einen durchgehenden Produktkanal beliebiger Länge, je nach gewünschtem Produktdurchsatz, bilden zu können. Aus diesem Grund besitzt die Vorrichtung 1 Verbindungs- und Abdichtmittel, um die Teileinheiten dichtend aneinander zu koppeln. Auf der Schnittstelle zur Folgeteileinheit 17 befindet sich um den produktführenden Kanal 2 herum eine Ausnehmung 18, in die ein abdichtendes Mittel eingefügt werden kann. Zum Abdichten eignen sich beispielsweise O-Ringdichtungen, Flachdichtungen oder Silikone. Die Ausnehmung liegt im gezeigten Beispiel direkt am produktführenden Kanal 2, kann sich aber im Prinzip an einer beliebigen Stelle auf der Schnittstelle zum Folgeteileinheit 17 befinden. Wahlweise kann die Ausnehmung 18 nur an einer Seite der Teileinheit ausgebildet sein oder an beiden Seiten. Um zwei Teileinheiten relativ zueinander zu zentrieren weisen die Kanalteile jeweils mindestens einen auf der Schnittstelle zur Folgeteileinheit 17 vorhandenen, nach außen abstehenden Bolzen 19 und 20 auf. Diese Bolzen 19 und 20 treten beim Aneinanderbringen von zwei Teileinheiten in entsprechende Aussparungen (hier nicht gezeigt) in der anderen Teileinheit ein und zentrieren somit die beiden Teileinheiten relativ zueinander.The device described above forms a sub-unit. This subunit can be used connect other structurally identical sub-units to create a continuous product channel any length, depending on the desired product throughput. Out for this reason the device 1 has connection and sealing means to the Coupling sub-units to each other in a sealed manner. On the interface to the next subunit 17 there is a recess 18 around the product-carrying channel 2, into which a sealing agent can be inserted. Are suitable for sealing for example O-ring seals, flat seals or silicones. The recess lies in the example shown, directly on the product-carrying channel 2, but can in principle are located anywhere on the interface to the slave unit 17. Optional can the recess 18 be formed only on one side of the sub-unit or on both sides. To center two subunits relative to each other, the Channel parts each have at least one on the interface to the slave unit 17 existing, projecting bolts 19 and 20 on. These bolts 19 and 20 occur when two subunits are brought into corresponding recesses (not shown here) in the other subunit and thus center the two Subunits relative to each other.

Mit 21 werden drehbar gelagerte Bolzen bezeichnet, deren Drehachse im Wesentlichen parallel zur Schnittfläche 17 ausgerichtet ist. Die Halterung der drehbar gelagerten Bolzen 21 steht mit Versteifungsplatten 14 in Verbindung und befindet sich in der Nähe der Schnittfläche 17 zur Folgeteileinheit. Auf der gegenüberliegenden Seite, der zweiten Schnittstelle 22 zu einer weiteren Folgeteileinheit, befinden sich Gegenstücke 23 zu den drehbar gelagerten Bolzen 21. Diese sind, wie die drehbar gelagerten Bolzen 21 an der Versteifungsplatte 14 in der Nähe der Schnittstelle 22 angebracht. Identische drehbar gelagerte Bolzen (hier nicht gezeigt) und Gegenstücke 24 befinden sich auch auf der Versteifungsplatte 15 des zweiten Kanalformteils 3, wobei in diesem Ausführungsbeispiel jeweils an einer Schnittstelle 17 oder 22 sich auf der einen Seite drehbar gelagerte Bolzen befinden und auf der anderen Seite die Gegenstücke. Dabei ist jedoch die exakte Anordnung der Bolzen und der Gegenstücke für die Erfindung unerheblich. Die drehbar gelagerten Bolzen 21 und die Gegenstücke dienen zum gegenseitigen Befestigen von zwei aufeinanderfolgenden Teileinheiten. Der Mechanismus wird in der Beschreibung der Figur 4 näher erläutert.With 21 rotatably mounted bolts are designated, whose axis of rotation essentially is aligned parallel to the cutting surface 17. The bracket of the rotatably mounted Bolt 21 communicates with stiffening plates 14 and is nearby the cut surface 17 to the follower unit. On the opposite side, the second Interface 22 to another subsequent sub-unit, there are counterparts 23 to the rotatably mounted bolts 21. These are, like the rotatably mounted bolts 21 on the Stiffening plate 14 attached near the interface 22. Identical rotatable stored bolts (not shown here) and counterparts 24 are also on the Stiffening plate 15 of the second channel molding 3, in this embodiment each rotatably mounted on one side at an interface 17 or 22 There are bolts and on the other side the counterparts. However, the exact one is Arrangement of the bolts and the counterparts are irrelevant to the invention. The rotatable mounted bolt 21 and the counterparts are used for mutual attachment of two successive subunits. The mechanism is described in the description of Figure 4 explained in more detail.

Figuren 2a und 2b zeigen eine Detaildarstellung einer erfindungsgemäßen Ausführung der Elektroden. In Figur 2a sieht man einen Schnitt längs des Produktstroms 25 und parallel zu den Elektroden 8 und 9, während Figur 2b einen Schnitt quer zum Produktstrom 25 auf Höhe der Spannschrauben 12 zeigt. Figures 2a and 2b show a detailed representation of an embodiment according to the invention of the electrodes. FIG. 2a shows a section along the product stream 25 and parallel to the electrodes 8 and 9, while Figure 2b shows a section transverse to Product stream 25 at the level of the clamping screws 12 shows.

Figur 2a zeigt eine Draufsicht auf den unteren Teil der Vorrichtung 1. Wie aus Figur 2a ersichtlich, hat die Elektrode 8 eine flächige Form, wobei die Seiten parallel zur Fließrichtung des Produktstroms 25 in Richtung der Kanalwände abgerundet sind. Dies führt zu einer ovalen Form. Dabei beträgt der Abrundungsradius R1 etwa die Hälfte der Tiefe Y der Elektrode.Figure 2a shows a plan view of the lower part of the device 1. As in Figure 2a can be seen, the electrode 8 has a flat shape, the sides parallel to Flow direction of the product stream 25 are rounded in the direction of the channel walls. This leads to an oval shape. The rounding radius R1 is approximately half of the Depth Y of the electrode.

In Figur 2b erkenntlich ist eine Abrundung 26 der Elektroden 8 und 9 an ihren Kanten. Auf der der Kanalwand 7 zugewandten Seite haben die Elektroden 8 und 9 eine Verdickung 27, die insbesondere teilweise eine abgerundete Form mit einem Radius R3, der etwa der Dicke z der Elektrode entspricht, hat. Auf der durch die Elektroden 8 und 9 bedeckten Fläche ist die Kanalwand 7 der Form der Elektroden 8 und 9 entsprechend bei 28 und 29 ausgenommen, wobei die Elektroden 8 und 9 etwa bis zur Hälfte ihrer Dicke z in die Kanalwand 7 eingefügt sind. Gegebenenfalls jedoch könnten die Elektroden 8 und 9 auch vollständig in die Formteile 3 und 4 eingelassen sein oder aber evtl. auch auf ihnen aufliegen. Die Elektroden 8 und 9 sind mit den Spannschrauben 12 an den jeweiligen Elektrodenanschlüssen 10 und 11 angeschlossen. Diese können sowohl den elektrischen Kontakt herstellen, als auch die Elektroden 8 und 9 dichtend befestigen. Evtl. können sich zusätzlich im Bereich hinter den Elektroden 28 und 29 auch Abdichtmittel befinden, wie beispielsweise Flachdichtungen. Alternativ ist es auch möglich, die Elektroden 8 und 9 mit den Formteilen 3 und 4 mit Hilfe eines lebensmittelechten Klebers, wie beispielsweise einem Silikonkleber, zu verkleben. Figur 2b zeigt auch die abgerundeten Ecken 30 des Kanals. Der Abrundungsradius R4 ist dabei üblicherweise wesentlich kleiner als die Hälfte der Höhe des Kanals H.A rounding 26 of the electrodes 8 and 9 on their edges can be seen in FIG. 2b. On the side facing the channel wall 7, the electrodes 8 and 9 have one Thickening 27, which in particular partially has a rounded shape with a radius R3, which corresponds approximately to the thickness z of the electrode. On the electrodes 8 and 9 covered area, the channel wall 7 corresponds to the shape of the electrodes 8 and 9 except at 28 and 29, electrodes 8 and 9 being about halfway through them Thickness z are inserted into the channel wall 7. If necessary, however, the Electrodes 8 and 9 can also be completely embedded in the molded parts 3 and 4 or else possibly also lie on them. The electrodes 8 and 9 are with the clamping screws 12 connected to the respective electrode connections 10 and 11. these can make both the electrical contact and the electrodes 8 and 9 sealing Fasten. Possibly. can also be in the area behind the electrodes 28 and 29 Sealants are located, such as flat seals. Alternatively it is possible, the electrodes 8 and 9 with the molded parts 3 and 4 using a to glue food-safe glue, such as a silicone glue. figure 2b also shows the rounded corners 30 of the channel. The rounding radius is R4 usually much smaller than half the height of the channel H.

Für ein mit Früchten oder Fruchtstücken angereichertes Lebensmittelflüssigprodukt sind z.B. folgende Vorrichtungsgrößen (ohne Wechselfeldgenerator) anwendbar
Breiten b von 100 mm bis 600 mm, insbesondere dabei b = 350 mm,
Höhen h von 50 mm bis 250 mm, insbesondere dabei h = 150 mm
und Tiefen T von 50 mm bis 450 mm, insbesondere T = 250 mm, mit einem Kanal mit
einer Breite h von 50 mm bis 550 mm, insbesondere b = 250 mm,
einer Höhe h von 30 mm bis 230 mm, insbesondere h = 95 mm und einem Abrundungsradius R4 von 0 mm bis 115 mm, insbesondere R4 = 10 mm. Die Elektroden 8 und 9 haben dabei eine Breite x von 30 mm bis 500 mm, insbesondere x = 250 mm,
eine Tiefe x von 20 mm bis 450 mm. insbesondere y = 135 mm und eine Dicke z von 5 mm bis 25 mm, insbesondere z = 10 mm. Der Seitenabrundungsradius R1 der Elektroden 8 und 9 beträgt etwa 0 mm bis 225 mm, insbesondere 67, 5 mm, der Elektrodenabrundungsradius R2 etwa 0 mm bis 12, 5 mm, insbesondere R2 = 5 mm und der Verdickungsradius R3 etwa 0 bis 25 mm, insbesondere R3 = 10 mm.For a food liquid product enriched with fruit or pieces of fruit, the following device sizes (without alternating field generator) can be used, for example
Widths b from 100 mm to 600 mm, in particular b = 350 mm,
Heights h from 50 mm to 250 mm, in particular h = 150 mm
and depths T from 50 mm to 450 mm, in particular T = 250 mm, with a channel with
a width h of 50 mm to 550 mm, in particular b = 250 mm,
a height h of 30 mm to 230 mm, in particular h = 95 mm and a rounding radius R4 of 0 mm to 115 mm, in particular R4 = 10 mm. The electrodes 8 and 9 have a width x of 30 mm to 500 mm, in particular x = 250 mm,
a depth x of 20 mm to 450 mm. in particular y = 135 mm and a thickness z of 5 mm to 25 mm, in particular z = 10 mm. The side rounding radius R1 of the electrodes 8 and 9 is approximately 0 mm to 225 mm, in particular 67.5 mm, the electrode rounding radius R2 is approximately 0 mm to 12.5 mm, in particular R2 = 5 mm and the thickening radius R3 is approximately 0 to 25 mm, in particular R3 = 10 mm.

Figur 3 zeigt ein alternatives Ausführungsbeispiel 31 der erfindungsgemäßen Vorrichtung. Die im Wesentlichen baugleiche Ausführung unterscheidet sich vom vorangehenden Ausführungsbeispiel in zwei Punkten. Im Vergleich zum Elektrodenanschluss 11 des ersten Ausführungsbeispiels ist die Kontaktfläche des Elektrodenanschlusses 32 im zweiten Ausführungsbeispiel kleiner. In Richtung des hier nicht weiter gezeigten Wechselstromgenerators bildet sich der Elektrodenanschluss 32 im Wesentlichen U-förmig fort und liegt an dieser Stelle nicht mehr auf dem Kanalformteil 4 auf. Auch auf der dem Wechselfeldgenerator gegenüberliegenden Seite ist der Elektrodenanschluss 32 im Vergleich zum Elektrodenanschluss 11 (Ausführungsbeispiel 1) abgekürzt. Dadurch, dass die Auflagenfläche des Elektrodenanschlusses 32 auf dem Kanalformteil kleiner ist als im ersten Ausführungsbeispiel, kann nun die Versteifungsplatte 33 mit einer größeren Fläche ausgebildet werden und führt zu einer verbesserten Festigkeit der Vorrichtung 31 im Vergleich zum ersten Ausführungsbeispiel. Es versteht sich, dass der Elektrodenanschluss, der zur zweiten Elektrode 8 gehört, eine dem Elektrodenanschluss 32 äquivalente Form hat. Das gleiche gilt für die Versteifungsplatte 34 des zweiten Kanalformteils 3.Figure 3 shows an alternative embodiment 31 of the invention Contraption. The essentially identical design differs from previous embodiment in two points. Compared to Electrode connection 11 of the first exemplary embodiment is the contact surface of the Electrode terminal 32 smaller in the second embodiment. Towards the here The electrode connection 32 is formed, not shown further essentially U-shaped and no longer lies on the channel molding at this point 4 on. This is also on the side opposite the alternating field generator Electrode connection 32 in comparison to electrode connection 11 (exemplary embodiment 1) abbreviated. The fact that the contact surface of the electrode connection 32 on the Channel molding is smaller than in the first embodiment, can now Stiffening plate 33 are formed with a larger area and leads to a improved strength of the device 31 compared to the first embodiment. It goes without saying that the electrode connection belonging to the second electrode 8 is a the electrode terminal 32 has an equivalent shape. The same goes for the Stiffening plate 34 of the second channel molding 3.

Weiterhin unterscheidet sich Ausführungsbeispiel 2 durch eine geänderte Befestigungsund Kontaktierungsweise der Elektroden mit den Kanalformteilen bzw. den Elektrodenanschlüssen, wobei die Befestigung der Elektroden von der Kontaktierung getrennt werden. Die Elektroden werden dabei mit Elektrodenbefestigungsschrauben 35 an den Kanalformteilen 3 bzw. 4 befestigt, ohne die Elektrodenanschlüsse 32 zu berühren. Der elektrische Kontakt zwischen den Elektroden und dem Elektrodenanschluss 33 wird mit Hilfe von Kontaktmitteln, wie beispielsweise hier sechs Schrauben 36, hergestellt. Diese Ausführungsform bringt den Vorteil mit sich, dass im Falle defekter Elektrodenanschlüsse die Elektroden im Platz bleiben können oder. umgekehrt, wodurch sich Reparaturarbeiten vereinfachen. Die Abmessungen entsprechen in etwa den Abmessungen des ersten Ausführungsbeispiels.Furthermore, embodiment 2 differs by a changed fastening and Way of contacting the electrodes with the channel moldings or Electrode connections, the attachment of the electrodes from the contact be separated. The electrodes are fastened with electrode fastening screws 35 attached to the channel molded parts 3 and 4 without the electrode connections 32 touch. The electrical contact between the electrodes and the Electrode connection 33 is made using contact means, such as six here Screws 36 made. This embodiment has the advantage that in In case of defective electrode connections the electrodes can remain in place or. vice versa, which simplifies repair work. The dimensions correspond approximately to the dimensions of the first embodiment.

Figur 4 zeigt eine perspektivische Gesamtansicht von drei hintereinander geschalteten Teileinheiten 1 des ersten Ausführungsbeispiels. Die drei hintereinander geschalteten Teileinheiten 1 werden an den Enden 37 und 38 durch Anschlussrohrstücke 39 ergänzt. An den Schnittstellen 17 zu den jeweiligen Folgeteileinheiten bzw. dem Anschlussrohrstück 39 lässt sich erkennen, wie durch das Einbringen der drehbar gelagerten Bolzen 21 in das entsprechende Gegenstück 23 die Teileinheiten aneinander befestigt werden können und auch die Anfangs- bzw. Endteileinheit mit dem jeweiligen Anschlussrohrstück 39 verbunden werden kann. Im gezeigten Ausführungsbeispiel benutzt man drei aufeinanderfolgende Teileinheiten, es können jedoch je nach Anwendung des Produktstromerhitzers beliebig viele Teileinheiten aneinandergereiht werden.Figure 4 shows an overall perspective view of three connected in series Subunits 1 of the first embodiment. The three connected in series Subunits 1 are supplemented at the ends 37 and 38 by connecting pipe pieces 39. At the interfaces 17 to the respective subsequent subunits or Connection pipe piece 39 can be seen, as by inserting the rotatable mounted bolts 21 in the corresponding counterpart 23 the subunits together can be attached and also the start or end part unit with the respective Connection pipe piece 39 can be connected. In the embodiment shown one uses three consecutive subunits, however, depending on Application of the product flow heater any number of sub-units lined up become.

Figur 5 zeigt eine Alternative zum Aneinanderreihen baugleicher Teileinheiten. Je nach Anzahl an gewünschten Elektrodenpaare kann man auch die Länge eines Kanalformteils 40 anpassen. Im gezeigten Ausführungsbeispiel lassen sich beispielsweise fünf Elektroden 41 bis 45 in einem Kanalformteil 40 anordnen. Die Dimensionen der Elektroden 41 bis 45 entsprechen dabei den Dimensionen der in Figur 2a und 2b beschriebenen Elektroden 8 und 9. Im gezeigten Ausführungsbeispiel haben die Elektroden 41 bis 45 einen Abstand von ungefähr 50 mm. Die Vielzahl an Löchern 46 in der Wand des Kanalformteils 40 werden zur Befestigung der zwei benötigten Kanalformteile mit Hilfe von Schrauben benutzt. Alternativ lassen sich die Kanalwände auch verkleben.Figure 5 shows an alternative to stringing identical sub-units. Depending on The number of desired electrode pairs can also be the length of a channel molding 40 adjust. In the embodiment shown, for example, five Arrange electrodes 41 to 45 in a channel molding 40. The dimensions of the Electrodes 41 to 45 correspond to the dimensions in FIGS. 2a and 2b described electrodes 8 and 9. In the embodiment shown, the Electrodes 41 to 45 a distance of about 50 mm. The variety of holes 46 in the wall of the channel molding 40 are required for fastening the two Duct fittings used with the help of screws. Alternatively, the canal walls also glue.

Figur 6 zeigt die Verwendung der Formteile, wie in Figur 5 beschrieben, in einem Produktstromerhitzer. In diesem Beispiel werden Formteile 47 mit drei Elektroden (nicht gezeigt) verwendet. Bezüglich der Form der Elektrodenanschlüsse 32 und der Versteifungsplatte 33 wurde das zweite Ausführungsbeispiel, wie in Figur 3 gezeigt, benutzt. Ergänzt wird die Vorrichtung durch an beiden Enden angebrachte Reinigungsmodule 48 und 49, die in der folgenden Figur 7 näher erläutert werden. Anschließend an die Reinigungsmodule 48, 49 finden sich die Anschlussrohrstücke 39. Die Reinigungsmodule 48, 49 werden mit Hilfe zweier Zugstangen 50 und 51, miteinander verspannt. Mit Hilfe dieser Zugstangenvorrichtung werden die drei Elemente, die zwei Reinigungsmodule und die Teileinheit, dichtend und zentriert miteinander verbunden.FIG. 6 shows the use of the molded parts, as described in FIG. 5, in one Product stream heater. In this example, molded parts 47 with three electrodes (not shown) used. Regarding the shape of the electrode terminals 32 and Stiffening plate 33 became the second embodiment as shown in Figure 3 used. The device is supplemented by attached at both ends Cleaning modules 48 and 49, which are explained in more detail in the following Figure 7. Following the cleaning modules 48, 49, there are the connecting pipe pieces 39. The cleaning modules 48, 49 are by means of two tie rods 50 and 51, tense together. With the help of this drawbar device, the three Elements, the two cleaning modules and the sub-unit, sealing and centered connected with each other.

Figur 7 zeigt eine perspektivische Detaildarstellung des Reinigungsmoduls 48. In der gezeigten Ausführungsform besteht das Reinigungsmodul aus einem einzigen Formteil 52, wobei natürlich wiederum die Möglichkeit besteht, den Körper des Reinigungsmoduls 48 aus zwei oder mehreren im Wesentlichen baugleichen Formteilen zusammenzusetzen. Das Formteil 52 definiert einen Kanal 53, dessen Form im Wesentlichen der Form des produktführenden Kanals 2 der Teileinheiten 1 bzw. 31 entspricht. Mit 53 sind Zentrierausnehmungen bezeichnet, die dazu dienen, das Reinigungsmodul 48 mit einer folgenden Teileinheit 1 oder 31, an dem sich Zentrierbolzen 19 bzw. 20 befinden, auszurichten. An den Seiten des Formteils 52 befinden sich Führungsöffnungen 55, durch die die Zugstangen 50 bzw. 51 durchgesteckt werden. An den Anschlussflansch 56 kann ein reinigungsmittelführendes Rohr oder ein reinigungsmittelführender Schlauch angeschlossen werden. Durch einen im Reinigungsmodulformteil 52 vorhandenen Kanal (nicht gezeigt), tritt das Reinigungsmittel in den Sprühkopf 57 ein und wird durch im Sprühkopf vorhandenen Öffnungen in das Innere des Kanals 53 bzw. produktführenden Kanals 2 eingesprüht. Im Ausführungsbeispiel wird ein zentraler Sprühkopf gezeigt; es ist jedoch durchaus vorstellbar, mehrere kleine Sprühköpfe, insbesondere am Rand des Kanals 53 auszubilden.FIG. 7 shows a perspective detailed illustration of the cleaning module 48 shown embodiment, the cleaning module consists of a single molded part 52, with the possibility of the body of the cleaning module 48 of two or more essentially identical molded parts reassemble. The molded part 52 defines a channel 53, the shape of the Essentially the shape of the product-carrying channel 2 of the subunits 1 and 31 equivalent. With 53 centering recesses are designated, which serve the Cleaning module 48 with a following sub-unit 1 or 31, on which Centering bolts 19 and 20 are to be aligned. On the sides of the molded part 52 there are guide openings 55 through which the tie rods 50 and 51 respectively be put through. A cleaning agent-carrying can be attached to the connecting flange 56 Pipe or a hose carrying detergent can be connected. Through a in the existing cleaning module molding 52 channel (not shown), this occurs Detergent in the spray head 57 and is present in the spray head Openings sprayed into the interior of the channel 53 or product-carrying channel 2. in the An embodiment shows a central spray head; however, it is quite conceivable, several small spray heads, especially at the edge of the channel 53 train.

Für ein mit Früchten oder Fruchtstücken angereichertes Lebensmittelprodukt hat sich ein Produktstromerhitzer mit zweimal fünf Elektrodenpaaren in Reihe geschaltet als besonders wirksam gezeigt. Dabei wurde am Produkteintrittsende und am Produktaustrittsende jeweils ein Reinigungsmodul angebracht und ein zusätzliches Reinigungsmodul in der Mitte der Vorrichtung, d.h., nach fünf aufeinanderfolgenden Elektrodenpaaren, angeordnet. Es ist für die Verwendung unerheblich, ob die Vorrichtung liegend oder stehend benutzt wird, wobei beim stehenden Gebrauch die Standfläche der Anlage geringer ist.For a food product enriched with fruits or pieces of fruit, Product flow heater with two five pairs of electrodes connected in series as shown particularly effective. At the end of product entry and on A cleaning module and an additional one are attached to the product outlet end Cleaning module in the middle of the device, i.e. after five consecutive Electrode pairs, arranged. It is irrelevant for the use whether the Device is used lying or standing, whereby the standing use Footprint of the system is smaller.

Anhand der in Figur 8 skizzenhaft dargestellten Gesamtanlage eines Produktstromerhitzers wird die Ausführung des erfindungsgemäßen Verfahrens unter Benutzung der erfindungsgemäßen Vorrichtung beschrieben. In einem Vorratsbehälter 60 befindet sich das mit Früchten oder Fruchtstücken angereicherte Lebensmittelflüssigprodukt, das erhitzt werden soll. Dieses wird mit Hilfe einer Pumpe 61 nach dem Öffnen eines Ventils 62 in einem Kanal 63 in Bewegung versetzt. Nach Durchlaufen eines gebogenen Anschlussstückes 64 tritt die Flüssigkeit in den Produktstromerhitzer 65 ein. Wie ersichtlich, wird das Produkt unten in den Produktstromerhitzer 65 eingespeist und fließt dann im Wesentlichen senkrecht nach oben durch den Produktstromerhitzer 65. Dabei fließt das Produkt an insgesamt 10 Elektrodenpaaren 67 bis 76 vorbei. Jedes Elektrodenpaar ist dabei an einen Rechteckgenerator 77 bis 86 angeschlossen. An die Elektroden 67 bis 76 werden typischerweise Rechteckwechselspannungen von etwa 500 V mit gleichzeitigen Stromstärken von etwa 50 bis 60 A und Frequenzen von etwa 200 bis 500 KHz angelegt. Dadurch entstehen im produktführenden Kanal starke elektrische Wechselfelder, die den Produktstrom erhitzen. Üblicherweise werden dabei im gegebenen Beispiel Erhitzungsraten von etwa 80°C/min. erzielt und Maximaltemperaturen von circa 130°C. Nach dem Erhitzungsschritt fließt der Produktstrom in den Ausströmkanal 87 ein und kann in einer anschließenden Apparatur (nicht gezeigt) weiterverarbeitet werden.On the basis of the overall system of a sketch shown in FIG Product flow heater is the execution of the method according to the invention Use of the device according to the invention described. In a storage container 60 is the one enriched with fruits or pieces of fruit Liquid food product to be heated. This is done with the help of a pump 61 after opening a valve 62 in a channel 63 set in motion. To Passing through a curved connector 64, the liquid enters the Product flow heater 65 a. As can be seen, the product is in the bottom Product flow heater 65 fed and then flows substantially vertically above through the product flow heater 65. The product flows to a total of 10 Electrode pairs 67 to 76 over. Each pair of electrodes is on one Rectangle generator 77 to 86 connected. Be on the electrodes 67 to 76 typically square wave voltages of about 500 V with simultaneous Current strengths of about 50 to 60 A and frequencies of about 200 to 500 KHz applied. This creates strong alternating electrical fields in the product-carrying channel, which Heat the product stream. Usually in the given example Heating rates of around 80 ° C / min. achieved and maximum temperatures of approximately 130 ° C. After the heating step, the product stream flows into the outflow channel 87 and can be further processed in a subsequent apparatus (not shown).

In regelmäßigen Abständen kann die Anlage abgeschaltet werden und der Produktstromerhitzer 65 mit Hilfe der vorhandenen Reinigungsmodule 88 bis 90 gereinigt werden. Zur evtl. Wartung der Elektroden lässt sich dank der Zugstangen 91 und 92 der Produktstromerhitzer relativ schnell auseinander bauen, indem man die Reinigungsmodule wegschiebt, womit leichter Zugang zu den Elektroden ermöglicht wird.The system can be switched off at regular intervals and the Product flow heater 65 cleaned using the existing cleaning modules 88 to 90 become. For possible maintenance of the electrodes, thanks to the pull rods 91 and 92 the Disassemble product stream heaters relatively quickly by using the Pushes cleaning modules away, allowing easy access to the electrodes becomes.

Claims (23)

Vorrichtung zum Erhitzen von Produktströmen, insbesondere von Frucht oder Fruchtstücke enthaltenden Lebensmittelproduktströmen, mit einem produktführenden Kanal (2), durch den das Produkt hindurchströmt und mit einer Vorrichtung zum Erzeugen von hochfrequenten elektrischen Wechselfeldem, die Elektroden (8,9), Elektrodenanschlüsse (10,11,32) und einen Wechselfeldgenerator (77) umfasst,
dadurch gekennzeichnet, dass
die Elektroden (8, 9) innerhalb des produktführenden Kanals (2) angeordnet sind.Device for heating product streams, in particular food product streams containing fruit or fruit pieces, with a product-carrying channel (2) through which the product flows and with a device for generating high-frequency electrical alternating fields, the electrodes (8, 9), electrode connections (10, 11, 32) and an alternating field generator (77),
characterized in that
the electrodes (8, 9) are arranged within the product-carrying channel (2). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass
die Elektroden (8,9) auf gegenüberliegenden Seiten des produktführenden Kanals (2) angeordnet sind, wobei die Vorrichtung (1,31) mindestens ein Elektrodenpaar umfasst.Device according to claim 1,
characterized in that
the electrodes (8,9) are arranged on opposite sides of the product-carrying channel (2), the device (1,31) comprising at least one pair of electrodes. Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die den produktführenden Kanal (2) bildenden Teile aus lebensmittelechtem dielektrischem Material bestehen.Device according to claim 1 or 2,
characterized in that
the parts forming the product-carrying channel (2) consist of food-safe dielectric material. Vorrichtung nach mindestens einem der Ansprüche 1 - 3,
dadurch gekennzeichnet, dass
der produktführende Kanal (2) einen Querschnitt rechteckiger Form besitzt, dessen Ecken abgerundet sind.Device according to at least one of claims 1-3,
characterized in that
the product-carrying channel (2) has a cross section of rectangular shape, the corners of which are rounded. Vorrichtung nach mindestens einem der Ansprüche 1 - 4,
dadurch gekennzeichnet, dass
der produktführende Kanal (2) aus mehreren, insbesondere aus zwei, im wesentlichen baugleichen Formteilen (3,4) zusammengesetzt ist.Device according to at least one of claims 1-4,
characterized in that
the product-carrying channel (2) is composed of several, in particular of two, essentially identical molded parts (3, 4). Vorrichtung nach mindestens einem der Ansprüche 1 - 5,
dadurch gekennzeichnet, dass
der Querschnitt des produktförmigen Kanals (2) so groß ist, dass das Produkt durch Luftdruck oder geringer Pumpkraft mit bis zu 4to/h, insbesondere 3to/h, in Bewegung versetzt wird und durch die Vorrichtung, insbesondere in Richtung von unten nach oben, fließt.Device according to at least one of claims 1-5,
characterized in that
the cross section of the product-shaped channel (2) is so large that the product is set in motion by air pressure or low pumping force at up to 4to / h, in particular 3to / h, and flows through the device, in particular in the direction from bottom to top , Vorrichtung nach mindestens einem der Ansprüche 1 - 6,
dadurch gekennzeichnet, dass
die Elektroden (8,9) aus rostfreiem Material, insbesondere Edelstahl gebildet sind.Device according to at least one of claims 1-6,
characterized in that
the electrodes (8, 9) are made of stainless material, in particular stainless steel. Vorrichtung nach mindestens einem der Ansprüche 1 - 7,
dadurch gekennzeichnet, dass
die Elektroden (8,9) flächig sind und eine ovale Form besitzen.Device according to at least one of claims 1-7,
characterized in that
the electrodes (8, 9) are flat and have an oval shape. Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet, dass
die Elektroden (8,9) an ihren Kanten (26), auf der der Kanalwand (7) abgewandten Seite, abgerundet sind.Device according to claim 8,
characterized in that
the electrodes (8, 9) are rounded at their edges (26) on the side facing away from the channel wall (7). Vorrichtung nach Anspruch 8 oder 9,
dadurch gekennzeichnet dass,
sich die Elektroden (8,9) an ihren Kanten (27), auf der der Kanalwand (7) zugewandten Seite, verdicken und sich in der Kanalwand (7) des produktführenden Kanals (2) eine der Elektrodenform entsprechende Ausnehmung (28,29) befindet.Device according to claim 8 or 9,
characterized in that
the electrodes (8, 9) thicken at their edges (27) on the side facing the channel wall (7), and a recess (28, 29) corresponding to the shape of the electrode is formed in the channel wall (7) of the product-carrying channel (2) located. Vorrichtung nach mindestens einem der Ansprüche 1 - 10,
dadurch gekennzeichnet dass,
die Elektroden (8,9) durch mindestens ein Befestigungsmittel (12,36), insbesondere mindestens eine Schraube (12), mit den außerhalb des produktführenden Kanals (2) liegenden Elektrodenanschlüssen (10,11,32) verbunden werden.Device according to at least one of claims 1-10,
characterized in that
the electrodes (8, 9) are connected by at least one fastening means (12, 36), in particular at least one screw (12), to the electrode connections (10, 11, 32) lying outside the product-carrying channel (2). Vorrichtung nach mindestens einem der Ansprüche 1 - 11,
dadurch gekennzeichnet, dass
der Wechselfeldgenerator (77) zum Erzeugen von Rechteckwechselspannungen in einem Frequenzbereich von 100kHz bis 1000kHz, insbesondere von 200kHz bis 500kHz, geeignet ist.Device according to at least one of claims 1-11,
characterized in that
the alternating field generator (77) is suitable for generating square-wave alternating voltages in a frequency range from 100 kHz to 1000 kHz, in particular from 200 kHz to 500 kHz. Vorrichtung nach mindestens einem der Ansprüche 1 - 12,
dadurch gekennzeichnet, dass
der Wechselfeldgenerator (77) zum Erzeugen von Spannungen von bis zu 1 kV an den Elektroden (8,9) und zum Erzeugen von Stromstärken von bis zu 100A ausgebildet geeignet ist.Device according to at least one of claims 1-12,
characterized in that
the alternating field generator (77) is designed to generate voltages of up to 1 kV at the electrodes (8, 9) and to generate currents of up to 100 A. Vorrichtung nach mindestens einem der Ansprüche 1 - 13,
dadurch gekennzeichnet, dass
der Wechselfeldgenerator (77) eine der Form der Elektrodenanschlüsse (10,11,32) entsprechende Schnittstelle zum kabellosen Anschließen umfasst.Device according to at least one of claims 1-13,
characterized in that
the alternating field generator (77) comprises an interface for wireless connection corresponding to the shape of the electrode connections (10, 11, 32). Vorrichtung nach Anspruch 14,
dadurch gekennzeichnet, dass
die Schnittstelle des Wechselfeldgenerators (77) so ausgelegt ist, dass die Elektrodenanschlüsse (10,11,32) werkzeugfrei anschließbar sind.Device according to claim 14,
characterized in that
the interface of the alternating field generator (77) is designed so that the electrode connections (10, 11, 32) can be connected without tools. Vorrichtung nach mindestens einem der Ansprüche 1 -15,
dadurch gekennzeichnet, dass
Versteifungselemente (14,15,33,34), als Schutz gegen Verformung, auf der Kanalaußenseite angeordnet sind.Device according to at least one of claims 1-15,
characterized in that
Stiffening elements (14, 15, 33, 34), as protection against deformation, are arranged on the outside of the duct. Vorrichtung nach mindestens einem der Ansprüche 1 -16,
dadurch gekennzeichnet, dass
der produktführende Kanal (2) von mehreren in Produktstromrichtung hintereinander dichtend angeordneten Teileinheiten gebildet wird.Device according to at least one of claims 1-16,
characterized in that
the product-carrying channel (2) is formed by a plurality of sub-units which are arranged one behind the other in the product flow direction. Vorrichtung nach Ansprüche 17,
dadurch gekennzeichnet, dass
die Teileinheit auf mindestens einer der den produktführenden Kanal (2) schneidenden Oberflächen (17), eine den produktführenden Kanal (2) umschließende Ausnehmung (18) hat, in die ein die Schnittstellen (17) zweier Vorrichtungen (1,31) abdichtendes Mittel eingefügt wird und Mittel (21,23) bereitgestellt werden, die die Vorrichtungen dichtend aneinanderfügen.Device according to claims 17,
characterized in that
the subunit has on at least one of the surfaces (17) intersecting the product-guiding channel (2), a recess (18) surrounding the product-guiding channel (2), into which a means sealing the interfaces (17) of two devices (1,31) is inserted and means (21, 23) are provided which seal the devices together. Vorrichtung nach Anspruch 17,
dadurch gekennzeichnet, dass
die Teileinheit auf einer der den produktführenden Kanal (2) schneidenden Oberflächen (17), eine den produktführenden Kanal (2) umschließende Ausnehmung (18) hat und auf der anderen den Kanal (2) schneidenden Oberfläche (22) eine der Form der Ausnehmung entsprechende Überhöhung hat und Mittel (21,23) bereitgestellt werden die die Vorrichtungen dichtend aneinanderfügen.Device according to claim 17,
characterized in that
the subunit has on one of the surfaces (17) intersecting the product-guiding channel (2), a recess (18) surrounding the product-guiding channel (2) and on the other surface (22) intersecting the channel (2) has a shape corresponding to the shape of the recess Has cant and means (21,23) are provided which seal the devices together. Vorrichtung nach mindestens einem der Ansprüche 1-19,
dadurch gekennzeichnet, dass
die Vorrichtung zusätzlich ein Reinigungsmodul (48,88,89,90) umfasst.Device according to at least one of claims 1-19,
characterized in that
the device additionally comprises a cleaning module (48,88,89,90). Vorrichtung nach Anspruch 20,
dadurch gekennzeichnet, dass
das Reinigungsmodul (48,88,89,90) einen produktführenden Kanal (53) umfasst, insbesondere aus Edeltstahl, der im Wesentlichen den gleichen Querschnitt hat wie die Vorrichtung (1,31) und im Inneren des produktführenden Kanals einen Sprühkopf (57) besitzt, der mit einem außen am Reinigungsmodul angebrachten Anschlussflansch (56) in Verbindung steht und durch den ein Reinigungsmedium, insbesondere Wasser, durch den Sprühkopf (57) ins Innere des produktführenden Kanals (2) gelangt.Device according to claim 20,
characterized in that
the cleaning module (48, 88, 89, 90) comprises a product-carrying channel (53), in particular made of stainless steel, which has essentially the same cross-section as the device (1,31) and has a spray head (57) inside the product-carrying channel , which is connected to a connection flange (56) on the outside of the cleaning module and through which a cleaning medium, in particular water, passes through the spray head (57) into the interior of the product-carrying channel (2). Vorrichtung nach Anspruch 20,
dadurch gekennzeichnet, dass
das Reinigungsmodul (48,49,88-90) mindestens eine weitere durchgehende Öffnung (55) im Wesentlichen parallel zur Richtung des Kanals (2) umfasst.Device according to claim 20,
characterized in that
the cleaning module (48, 49, 88-90) comprises at least one further through opening (55) substantially parallel to the direction of the channel (2). Verfahren zum Erhitzen von Produktströmen, insbesondere von Frucht oder Fruchtstücke enthaltenden Lebensmittelproduktströmen, bei dem das Produkt in einem produktführenden Kanal (2) strömt und durch an Elektroden (8,9) angelegte hochfrequente elektrische Wechselfelder erhitzt wird,
dadurch gekennzeichnet, dass
die Elektroden (8,9) innerhalb des produktführenden Kanals (2) angebracht sind.Method for heating product streams, in particular food product streams containing fruit or pieces of fruit, in which the product flows in a product-carrying channel (2) and is heated by high-frequency electrical alternating fields applied to electrodes (8, 9),
characterized in that
the electrodes (8, 9) are attached within the product-carrying channel (2).
EP03013574A 2003-06-13 2003-06-13 Heater for product stream Expired - Lifetime EP1487240B1 (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
DE50301102T DE50301102D1 (en) 2003-06-13 2003-06-13 Product stream heater
AT03013574T ATE303710T1 (en) 2003-06-13 2003-06-13 PRODUCT FLOW HEATER
EP03013574A EP1487240B1 (en) 2003-06-13 2003-06-13 Heater for product stream
SI200330068T SI1487240T1 (en) 2003-06-13 2003-06-13 Heater for product stream
ES03013574T ES2247455T3 (en) 2003-06-13 2003-06-13 PRODUCT CURRENT HEATER.
DK03013574T DK1487240T3 (en) 2003-06-13 2003-06-13 Heats to product stream
US10/865,327 US7411165B2 (en) 2003-06-13 2004-06-10 Product stream heater
CA002470802A CA2470802C (en) 2003-06-13 2004-06-11 A product stream heater
CNB200410055092XA CN100469200C (en) 2003-06-13 2004-06-11 Product stream heater
RU2004118459/09A RU2283546C2 (en) 2003-06-13 2004-06-11 Product flow heater
HR20040539A HRP20040539B1 (en) 2003-06-13 2004-06-11 A product stream heater
PL368497A PL203969B1 (en) 2003-06-13 2004-06-14 Equipment designed to warm up product stream, particularly stream of foodstuffs containing fruit or pieces of fruit and method for warming up product streams, particularly streams of foodstuffs containing fruit and pieces of fruit
BR0402215-7A BRPI0402215A (en) 2003-06-13 2004-06-14 Product Flow Heater
JP2004175892A JP2005058219A (en) 2003-06-13 2004-06-14 Product stream heater
SA04250279A SA04250279B1 (en) 2003-06-13 2004-09-11 heater for the co-current of the product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03013574A EP1487240B1 (en) 2003-06-13 2003-06-13 Heater for product stream

Publications (2)

Publication Number Publication Date
EP1487240A1 true EP1487240A1 (en) 2004-12-15
EP1487240B1 EP1487240B1 (en) 2005-08-31

Family

ID=33185900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03013574A Expired - Lifetime EP1487240B1 (en) 2003-06-13 2003-06-13 Heater for product stream

Country Status (15)

Country Link
US (1) US7411165B2 (en)
EP (1) EP1487240B1 (en)
JP (1) JP2005058219A (en)
CN (1) CN100469200C (en)
AT (1) ATE303710T1 (en)
BR (1) BRPI0402215A (en)
CA (1) CA2470802C (en)
DE (1) DE50301102D1 (en)
DK (1) DK1487240T3 (en)
ES (1) ES2247455T3 (en)
HR (1) HRP20040539B1 (en)
PL (1) PL203969B1 (en)
RU (1) RU2283546C2 (en)
SA (1) SA04250279B1 (en)
SI (1) SI1487240T1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2289342A1 (en) * 2009-08-27 2011-03-02 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Device and method for heating a flowing product
EP2604090A1 (en) * 2010-08-11 2013-06-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for uniformly heating products by means of a high-frequency electromagnetic alternating field
DE102021207153A1 (en) 2021-07-07 2023-01-12 DIL Deutsches Institut für Lebensmitteltechnik e.V. Device and method for continuous ohmic heating of food

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8075020B2 (en) * 2005-09-16 2011-12-13 Dayco Fluid Technologies, S.P.A. Pipe fitting for a heatable piping of a SCR system
EA012291B1 (en) * 2008-03-18 2009-08-28 Общество С Ограниченной Ответственностью "Марс" Method for the preparation of foodstuff or half-finished food and apparatus therefor
NL2008879C2 (en) * 2012-05-25 2013-11-26 Top B V Apparatus and process for heat treating a packaged food product.
NL2009466C2 (en) * 2012-09-14 2014-03-18 Zwanenberg Food Group B V DEVICE FOR PASTEURIZING A MASS OF FOODSTUFF.
ITVI20130115A1 (en) * 2013-04-22 2014-10-23 Rf Systems S R L METHOD FOR THE DISSOLUTION OF PRODUCTS AND PRODUCT DISSOLVERS ACTING TO REALIZE THIS METHOD
ES2966363T3 (en) * 2017-05-09 2024-04-22 Gea Food Solutions Bakel Bv Defrosting apparatus and method of thawing a substance

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546004A (en) * 1947-07-11 1951-03-20 Westinghouse Electric Corp Progressive dielectric heating
JPS57120046A (en) * 1981-01-20 1982-07-26 Mitsubishi Heavy Ind Ltd Heater for piping
WO1992022180A1 (en) * 1991-05-28 1992-12-10 Ib Obel Pedersen A method and an electrode system for heating media flowing through an insulating pipe
US5277924A (en) * 1992-11-25 1994-01-11 Proctor & Schwartz, Inc. Radio frequency proofing and convection baking apparatus and method for making pizza
US5834746A (en) * 1994-08-17 1998-11-10 Apv Pasilac A/S Method and apparatus for heating products by means of high-frequency electromagnetic waves
US6246040B1 (en) * 1999-01-29 2001-06-12 Bradley R. Gunn Solid state RF generator for dielectric heating of food products

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR911170A (en) 1945-05-30 1946-07-01 Method and apparatus for using radiant energy
US2473881A (en) * 1946-06-25 1949-06-21 Westinghouse Electric Corp High-frequency dielectric heating apparatus
US2548093A (en) * 1947-09-11 1951-04-10 Dunlop Tire & Rubber Corp Apparatus for dielectric heating
US2870543A (en) * 1956-01-24 1959-01-27 Armstrong Cork Co Method and apparatus for dielectric heating
US3027443A (en) * 1958-12-30 1962-03-27 Raybond Electronics Inc Carton gluing apparatus
US3149217A (en) * 1960-07-18 1964-09-15 Raybond Electronics Inc Glue setting machine
US3450856A (en) * 1966-12-28 1969-06-17 Continental Can Co Electrical heat treating system for sealing cartons or the like
US4148346A (en) * 1976-06-14 1979-04-10 Scarnecchia O Vincent Method of and apparatus for drying and debarking logs
SU819010A1 (en) 1979-02-19 1981-04-07 Уральский Ордена Трудового Красногознамени Политехнический Институт Им.C.M.Кирова Pipeline for pneumatic tarnsport of pulverulent materials
EP0085318B1 (en) * 1982-01-30 1987-09-09 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Device for heating an extrusion moulding track of electrically conductive material, and the use thereof
US4409455A (en) * 1982-03-05 1983-10-11 Cincinnati Milacron Inc. Dielectric heating section for blow molding machine
JPH04103497A (en) 1990-08-23 1992-04-06 Mitsubishi Heavy Ind Ltd De-icing device
JPH04212378A (en) * 1990-10-09 1992-08-03 Shiro Yamada Electrode structural body for high-frequency heating and solidifying device
JPH0515792A (en) 1990-12-03 1993-01-26 Kajino Enterp Kk Grinding device
JPH0726949Y2 (en) * 1991-02-08 1995-06-21 株式会社フロンティアエンジニアリング Continuous heating device for fluid food materials
JPH0755143B2 (en) * 1991-02-20 1995-06-14 東洋製罐株式会社 Continuous food heating method
JPH0637674Y2 (en) * 1991-08-09 1994-10-05 日新興業株式会社 Food defroster
JP2000061291A (en) * 1998-08-20 2000-02-29 Suehiro Epm:Kk Reaction device
JP4275840B2 (en) 2000-04-07 2009-06-10 株式会社フロンティアエンジニアリング Heating device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546004A (en) * 1947-07-11 1951-03-20 Westinghouse Electric Corp Progressive dielectric heating
JPS57120046A (en) * 1981-01-20 1982-07-26 Mitsubishi Heavy Ind Ltd Heater for piping
WO1992022180A1 (en) * 1991-05-28 1992-12-10 Ib Obel Pedersen A method and an electrode system for heating media flowing through an insulating pipe
US5277924A (en) * 1992-11-25 1994-01-11 Proctor & Schwartz, Inc. Radio frequency proofing and convection baking apparatus and method for making pizza
US5834746A (en) * 1994-08-17 1998-11-10 Apv Pasilac A/S Method and apparatus for heating products by means of high-frequency electromagnetic waves
US6246040B1 (en) * 1999-01-29 2001-06-12 Bradley R. Gunn Solid state RF generator for dielectric heating of food products

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 213 (M - 167) 26 October 1982 (1982-10-26) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2289342A1 (en) * 2009-08-27 2011-03-02 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Device and method for heating a flowing product
US8861945B2 (en) 2009-08-27 2014-10-14 Indag Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Apparatus and method for heating a product stream
EP2604090A1 (en) * 2010-08-11 2013-06-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for uniformly heating products by means of a high-frequency electromagnetic alternating field
DE102021207153A1 (en) 2021-07-07 2023-01-12 DIL Deutsches Institut für Lebensmitteltechnik e.V. Device and method for continuous ohmic heating of food
EP4117393B1 (en) * 2021-07-07 2024-10-30 Deutsches Institut für Lebensmitteltechnik e.V. Method and device for continuous ohmic heating of food

Also Published As

Publication number Publication date
RU2283546C2 (en) 2006-09-10
JP2005058219A (en) 2005-03-10
ES2247455T3 (en) 2006-03-01
EP1487240B1 (en) 2005-08-31
DK1487240T3 (en) 2005-11-07
BRPI0402215A (en) 2005-02-22
ATE303710T1 (en) 2005-09-15
CA2470802C (en) 2009-06-02
DE50301102D1 (en) 2005-10-06
RU2004118459A (en) 2005-12-10
CN1575047A (en) 2005-02-02
HRP20040539B1 (en) 2007-05-31
HRP20040539A2 (en) 2005-12-31
SI1487240T1 (en) 2005-12-31
CN100469200C (en) 2009-03-11
US7411165B2 (en) 2008-08-12
US20050019025A1 (en) 2005-01-27
PL368497A1 (en) 2004-12-27
SA04250279B1 (en) 2007-08-07
CA2470802A1 (en) 2004-12-13
PL203969B1 (en) 2009-11-30

Similar Documents

Publication Publication Date Title
AT508785B1 (en) DEVICE FOR HEATING A FLUID
DE60100765T2 (en) Method and device for preserving food in a pulsed electrical field
EP1487240B1 (en) Heater for product stream
DE69503114T2 (en) METHOD AND DEVICE FOR PRODUCING MEAT-LIKE PRODUCTS
AT508783B1 (en) DEVICE FOR HEATING A FLUID
EP1961807B1 (en) Device and method for stabilising flow through a chamber
AT508784B1 (en) DEVICE FOR HEATING A FLUID
DE102017118652A1 (en) Plasma generator module and its use
EP0223110A1 (en) Treatment of microorganisms promoting their metabolism and/or growth, and apparatus for carrying out the method
DE60034757T2 (en) Improved device for ohmic heating of a liquid body, treatment plant using the same, and treatment method of a liquid body by means of ohmic heating
EP0722075B1 (en) Heavy-duty capillary tube heat exchanger
EP3755299B1 (en) Apparatus and method for filling solution bags for dialysis
DE2534032B2 (en) High frequency ozonizer
CH500673A (en) Steam injector for milk sterilizer
DE102008011048B4 (en) Device for generating movements in glass melts by means of the Lorentz force and use of the device
WO2022122727A1 (en) Device for spraying media on the inner sides of medical products
DE19500421A1 (en) Capillary tube heat exchanger process and assembly sterilises fluids
WO1987004902A1 (en) Device for the conductive heating of flowing materials
EP2289342A1 (en) Device and method for heating a flowing product
DE873882C (en) Device for heating liquids, especially liquid food
DE936662C (en) Device for the sterilization of liquids, liquid foodstuffs, in particular milk, and method for operating this device
EP3291651B1 (en) Device and method for creating atmospheric plasma
DE4212335C2 (en) Extrusion device for the production of plates
DE2256062A1 (en) METHOD AND SYSTEM FOR GALVANIZING BAR MATERIAL
DE19723570A1 (en) Method and arrangement for cooling and / or heating, in particular machine or reactor housings

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040319

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1071655

Country of ref document: HK

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

Ref country code: CH

Ref legal event code: EP

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AXX Extension fees paid

Extension state: AL

Payment date: 20040319

Extension state: LT

Payment date: 20040319

Extension state: MK

Payment date: 20040319

Extension state: LV

Payment date: 20040319

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: DIPL.-ING. HORST QUEHL PATENTANWALT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050831

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50301102

Country of ref document: DE

Date of ref document: 20051006

Kind code of ref document: P

REG Reference to a national code

Ref country code: EE

Ref legal event code: FG4A

Ref document number: E000139

Country of ref document: EE

Effective date: 20050901

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20050402680

Country of ref document: GR

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2247455

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1071655

Country of ref document: HK

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: INDAG GESELLSCHAFT FUER INDUSTRIEBEDARF MBH & CO.

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E000233

Country of ref document: HU

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: INDAG GESELLSCHAFT FUER INDUSTRIEBEDARF MBH & CO.

Effective date: 20060329

REG Reference to a national code

Ref country code: EE

Ref legal event code: GB1A

Ref document number: E000139

Country of ref document: EE

REG Reference to a national code

Ref country code: SI

Ref legal event code: SP73

Owner name: INDAG GESELLSCHAFT FUER INDUSTRIEBEDARF MBH &A; DE

Effective date: 20060523

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

NLS Nl: assignments of ep-patents

Owner name: INDAG GESELLSCHAFT FUER INDUSTRIEBEDARF MBH & CO.

Effective date: 20060509

26N No opposition filed

Effective date: 20060601

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

BECA Be: change of holder's address

Owner name: *INDAG GESELLSCHAFT FUER INDUSTRIEBEDRAF M.B.H.

Effective date: 20050831

BECH Be: change of holder

Owner name: *INDAG GESELLSCHAFT FUER INDUSTRIEBEDRAF M.B.H.

Effective date: 20050831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CY

Payment date: 20100607

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20110614

Year of fee payment: 9

Ref country code: SE

Payment date: 20110616

Year of fee payment: 9

Ref country code: TR

Payment date: 20110613

Year of fee payment: 9

Ref country code: PT

Payment date: 20110524

Year of fee payment: 9

Ref country code: LU

Payment date: 20110627

Year of fee payment: 9

Ref country code: GR

Payment date: 20110628

Year of fee payment: 9

Ref country code: IE

Payment date: 20110616

Year of fee payment: 9

Ref country code: MC

Payment date: 20110620

Year of fee payment: 9

Ref country code: CH

Payment date: 20110627

Year of fee payment: 9

Ref country code: CZ

Payment date: 20110526

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20110620

Year of fee payment: 9

Ref country code: EE

Payment date: 20110620

Year of fee payment: 9

Ref country code: DK

Payment date: 20110625

Year of fee payment: 9

Ref country code: AT

Payment date: 20110620

Year of fee payment: 9

Ref country code: RO

Payment date: 20110530

Year of fee payment: 9

Ref country code: SI

Payment date: 20110524

Year of fee payment: 9

Ref country code: SK

Payment date: 20110527

Year of fee payment: 9

Ref country code: NL

Payment date: 20110628

Year of fee payment: 9

Ref country code: HU

Payment date: 20110603

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20110627

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BG

Payment date: 20110629

Year of fee payment: 9

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20121213

BERE Be: lapsed

Owner name: *INDAG GESELLSCHAFT FUER INDUSTRIEBEDRAF M.B.H. &

Effective date: 20120630

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20130101

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MM9D

Effective date: 20120613

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120630

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: EE

Ref legal event code: MM4A

Ref document number: E000139

Country of ref document: EE

Effective date: 20120630

Ref country code: CH

Ref legal event code: PL

Ref country code: AT

Ref legal event code: MM01

Ref document number: 303710

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120614

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121213

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20130121

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 295

Country of ref document: SK

Effective date: 20120613

Ref country code: GR

Ref legal event code: ML

Ref document number: 20050402680

Country of ref document: GR

Effective date: 20130104

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120630

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120630

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130101

Ref country code: HU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120614

Ref country code: EE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130104

Ref country code: SI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120614

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120702

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20131018

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120614

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120630

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20160623

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20160623

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20160630

Year of fee payment: 14

Ref country code: DE

Payment date: 20160630

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50301102

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170613

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180103

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170630

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170613