EP3310130A2 - Four à réchauffer continu permettant le chauffage continu d'une nappe - Google Patents

Four à réchauffer continu permettant le chauffage continu d'une nappe Download PDF

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Publication number
EP3310130A2
EP3310130A2 EP17191051.6A EP17191051A EP3310130A2 EP 3310130 A2 EP3310130 A2 EP 3310130A2 EP 17191051 A EP17191051 A EP 17191051A EP 3310130 A2 EP3310130 A2 EP 3310130A2
Authority
EP
European Patent Office
Prior art keywords
waveguide
continuous furnace
housing
antenna
waveguide slot
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
EP17191051.6A
Other languages
German (de)
English (en)
Other versions
EP3310130A3 (fr
EP3310130B1 (fr
Inventor
Klaus Gartz
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.)
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Original Assignee
Siempelkamp Maschinen und Anlagenbau 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 Siempelkamp Maschinen und Anlagenbau GmbH and Co KG filed Critical Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Publication of EP3310130A2 publication Critical patent/EP3310130A2/fr
Publication of EP3310130A3 publication Critical patent/EP3310130A3/fr
Application granted granted Critical
Publication of EP3310130B1 publication Critical patent/EP3310130B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/20—Moulding or pressing characterised by using platen-presses
    • B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
    • 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
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/707—Feed lines using waveguides
    • H05B6/708—Feed lines using waveguides in particular slotted waveguides
    • 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
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H05B6/784—Arrangements for continuous movement of material wherein the material is moved using a tubular transport line, e.g. screw transport systems

Definitions

  • the invention relates to a continuous furnace for the continuous heating of a pressed material mat, in particular in the course of the production of wood-based panels, with a tunnel-shaped housing through whose interior the pressed material mat can be guided and with one or more microwave generators for generating microwaves, which can be irradiated via one or more waveguides into the interior of the housing.
  • Pressgutmatte means in the context of the invention preferably a mat or web of material (glued) particles, z.
  • chips or fibers preferably wood chips or wood fibers in the course of the production of wood-based panels.
  • wood chips or wood fibers usually sprinkled on a spreading belt conveyor or the like to form a Pressgutmatte and the pressed material mat thus produced then passes through a press, z.
  • microwave radiation means electromagnetic radiation in a frequency range from 100 MHz to 300 GHz, preferably 300 MHz to 100 GHz.
  • the microwave radiation is in one or more microwave generators, z. B. magnetrons, generated and radiated via waveguides in the interior of the housing or coupled.
  • a continuous furnace for continuous preheating a pressed material mat of the type described above is z. B. from the EP 2 247 418 B1 known. Microwaves in a frequency range from 2400 to 2500 MHz are used for heating the pressed product mat, the microwaves for each press surface side from 20 to 300 microwave generators with magnetrons having a power of 3 to 50 KW being generated.
  • the inlet and the outlet of the continuous furnace should be made variable in height and / or width.
  • To change the inlet or outlet movable absorption elements may be provided, for. B. absorber stones and / or water tank.
  • the German utility model DE 20 2015 102 422 U1 describes an apparatus for continuously heating materials of substantially non-metallic material, comprising a continuous furnace for continuously heating material on an endlessly circulating conveyor belt, wherein the continuous furnace a plurality of magnetrons for generating electromagnetic waves and waveguides with outlet openings for feeding the waves in has a radiation space.
  • the main axes of the outlet openings form an angle greater than 0 ° and / or the line connecting the centers of gravity of the surfaces of the outlet openings form an angle of greater than 0 to the vertical to the direction of production.
  • a microwave heating device which is designed in particular for ceramic materials and moldings and has a plurality of microwave generators for the radiation of microwaves with a frequency of 300 MHz to 5.8 GHz.
  • the coupling of the high and low frequency microwaves is carried out via several in the ceiling and the bottom of the drying chamber recessed coupling elements. These should be slot antennas tuned to the output frequency.
  • the arrangement of several field leaders in the ceiling area of the drying chamber is provided.
  • the focus of the invention lies in the industrial drying of ceramic materials and mineral insulation materials.
  • the invention has for its object to provide a continuous furnace, with which a Pressgutmatte, in particular for the production of wood-based panels, can be heated and preheated efficiently and economically.
  • the invention teaches in a generic continuous furnace of the type described above that the waveguide or at least partially as a waveguide slot antenna (s) is / are formed, the (or) a slot antenna section, each with a plurality of outlet slots for have the coupling of the microwaves in the interior.
  • Slot antenna section means a portion of the waveguide with respect to the longitudinal direction and thus a length of the waveguide.
  • a waveguide is basically a known type Waveguide for electromagnetic waves (here: microwaves).
  • the waveguide is designed as a metal tube with preferably rectangular (possibly also circular or elliptical) cross-section.
  • Such waveguides are used in the prior art for transporting the microwaves generated in the microwave generator in the oven when the microwave generators are not directly connected to the housing.
  • the invention proposes that the waveguides (at least in sections) are formed as waveguide slot antennas, each having a plurality having exit slots.
  • the waveguide or the waveguide slot antenna is the end, namely closed at the end facing away from the microwave generator with an end wall. Consequently, the microwaves do not emerge from the waveguide on the face side, but they are emitted via the one longitudinal wall, the so-called antenna wall, of the waveguide slot antenna, namely through the outlet slots arranged there.
  • the microwaves thus enter the waveguide or the waveguide slot antenna on the side facing the microwave generator and are reflected on the opposite closed end or end wall, so that a standing wave with the so-called waveguide wavelength is formed within the waveguide slot antenna, ie it is formed two oscillation bellies per waveguide wavelength.
  • the resulting field is greatly disturbed by the slits introduced into an antenna wall and, due to this interference, the field exits the waveguide slot antenna and spreads out of it into the space, ie into the interior of the furnace.
  • the invention has recognized that in the conventional irradiation on the frontally open waveguide upon entry of the microwaves in the interior reflections of the furnace housing occur and the radiation enters the interior in an undirected manner, so that uneven heating takes place.
  • About the waveguide slot antenna is a directed irradiation of the pressed material mat, ie the registered amount of energy is directed to the Pressgutmatte and it reflections are avoided.
  • the "illumination" of the pressed material mat is improved.
  • Such slot antennas are known in communication technology in principle to address certain sectors of a service area evenly and selectively radio technology. The invention translates such considerations to the field of microwave heating of pressed stock mats for the woodworking industry.
  • the waveguide slot antennas (each) have a rectangular cross-section.
  • the waveguide slot antenna extends along a longitudinal direction such that the waveguide slot antenna forms a predetermined length of the waveguide, this slot antenna section having an antenna wall extending along the antenna's longitudinal direction in which the exit slits are disposed.
  • the waveguide can therefore also have a (conventional) waveguide section without slots.
  • the waveguide can consequently initially have a waveguide section without slots and a slot antenna section with slots adjoining it.
  • the waveguide (with waveguide section and antenna section) can extend straight in one direction and with a substantially identical cross section.
  • the waveguide section or a waveguide section extends in a different direction than the slot antenna section, so that a spatial deflection can take place within the waveguide. This is particularly useful when the arrangement of the microwave generators in the room requires this.
  • the waveguide slot antennas protrude into the interior of the housing, i. H. they break through the housing wall. Consequently, the waveguides do not terminate with the entry into the housing, but extend through the housing wall and protrude into the housing as waveguide slot antennas, so that they are arranged above and / or below the pressed material mat and the pressed material mat is targeted from above and / or from below (directed) irradiate.
  • the waveguide slot antennas may be connected to the housing on the outside or attached to the housing on the outside, so that the antenna wall is formed by a region of the housing or housing wall or the antenna wall forms part of the housing wall.
  • the waveguide slot antennas (or the antenna section of the waveguides) run transversely to the direction of passage, i. They are arranged transversely to the furnace longitudinal direction.
  • the longitudinal direction of the waveguide slot antenna thus extends transversely to the direction of passage of the furnace.
  • the waveguide slot antennas are not arranged transversely to the passage direction, but parallel to the passage direction and thus oven longitudinal direction, so that the waveguide slot antennas extend with their longitudinal direction along the passage direction.
  • waveguides themselves and in particular their waveguide slot antenna sections. or waveguide slot antennas preferably have a rectangular cross section, wherein preferably by the antenna wall (which has the slots) defined width of 1.5 times or 2.5 times, more preferably 2 times the height of the waveguide Slot antenna is.
  • the waveguide slot antenna z.
  • each row of slots preferably has a plurality of spaced-apart arranged slots.
  • the two rows of slots are preferably offset and thus arranged at a distance from the center line of the waveguide slot antenna or the antenna wall.
  • the individual slots of the two rows of slots along the longitudinal direction are preferably arranged offset from one another.
  • the individual slots are preferably rectangular. You can have a length of z. B. 100 mm to 200 mm.
  • the invention also provides a method for preheating a pressed material mat, in particular in the course of the production of wood-based panels, with a continuous furnace of the type described.
  • This method is characterized in that the pressed material mat passed through the interior of the housing and with the waveguide slot antennas emerging microwaves irradiated while being heated.
  • the use of such a continuous furnace for the preheating of (glued) wood-base mats in the course of the production of wood-based panels is therefore according to the invention of particular importance.
  • the device is therefore preferably designed as a wood material mat heating device or preheating device.
  • the continuous furnace itself can z. B. have a rectangular cross-section, so that the pressed material mat runs at a predetermined height through the rectangular interior.
  • the waveguide slot antennas can - as already described - protrude transversely to the direction of passage into the interior or be placed on the interior, so that the pressed material mat z. B. is irradiated from above.
  • the waveguide slot antennas may also be arranged parallel to the passage direction within the interior or be placed on the interior or on the housing. In this case, z.
  • As the slots provided with the antenna wall a part of the upper housing wall, in which the waveguide slot antenna is attached directly to the upper housing wall. The irradiation can be done from the top to the top of the mat and / or from below to the bottom of the mat.
  • the tunnel-shaped housing may alternatively be formed in cross-section and oval and z. B. have a width that is greater than the height. Even in such a case, the described options exist. If one such oval, z. B. elliptical housing, the slot antennas are attached to the outside of the housing, there is the possibility that the waveguide slot antennas follow the oval shape of the housing and are therefore formed curved itself along the longitudinal direction.
  • the tunnel-shaped housing generally has not only a housing shell (with, for example, a rectangular or oval cross-section), but also an input-side end wall and an output-side end wall, which terminate the furnace on the input side and output side. Since the web to be heated is to be passed continuously through the continuous furnace, the input-side end wall and / or the output-side end wall on the one hand an input side opening on the other hand, an output side opening through which the continuous material web can enter the housing and exit from the housing.
  • an input tunnel and, on the other hand, an output tunnel such an input tunnel or output tunnel generally having a significantly lower one Cross section or a significantly smaller cross-sectional area than the continuous furnace itself or the housing, so that the microwave losses are kept low through the entrance tunnel and the exit tunnel.
  • the input tunnel and the output tunnel are constructed constructively, as well as waveguides which are made of an electrically conductive material (eg metal), wherein these tunnels are dimensioned with respect to width and height such that no or the smallest possible propagation occurs
  • the microwave of the particular wavelength is made so that they work as it were "destructive" by the vibration modes of the microwaves are suppressed.
  • Fig. 1 is simplified a plant for the production of wood-based panels presented in a continuous flow.
  • the spreading material to be compacted for example wood fibers or wood chips
  • a spreading belt conveyor 2 to form a spreading material mat 1.
  • the spreading material mat 1 produced in this way is pressed in a continuously operating press 3 using pressure and heat to the wood-based panel (eg chipboard or fiberboard).
  • Such Press 3 is generally designed as a double-belt press, which has an upper heating plate and a lower heating plate and endless press belts (eg steel press belts) in the upper press part and in the lower press part, these press belts with the interposition of rolling element aggregates (eg wooden bars). are supported on the press plates / heating plates.
  • One of the heating plates or both heating plates are loaded with pressing cylinders, which are supported on the press frame (eg on press frame).
  • a preheating of the pressed material mat 1 takes place with the aid of an in Fig. 1 merely indicated continuous furnace 4.
  • the pressed material mat 1 consequently passes through the continuous furnace 4, which has a tunnel-shaped housing 5.
  • the continuous furnace 4 a plurality of microwave generators 6, with which microwaves are generated, so that the material web 1 in the interior 7 of the housing 5 is applied and thus heated.
  • the microwave generators 6 can be magnetrons or the generators can have such magnetrons.
  • the microwave generators 6 are connected via waveguide 8 to the housing 5, so that the microwaves are irradiated via the waveguide 8 in the interior 7 of the housing.
  • the tunnel-shaped housing 5 has a housing shell 10, which has a rectangular cross-section in the exemplary embodiment.
  • the housing 5 has an input-side end wall 11 and an output-side end wall 12, the input-side end wall having an input-side opening 13 and the output-side end wall having an output-side opening 14 through which the pressed material mat 1 enters the housing 5 and exits from the housing 5 ,
  • the input-side opening 13, an input tunnel 15 and to the output side Opening 14 an output tunnel 16 connected, with which the leakage of the microwaves are avoided or reduced from the housing interior.
  • the entrance tunnel 15 and the exit tunnel 16 in the manner of waveguides as z. B. rectangular tubes may be formed, however, which are dimensioned such that the corresponding modes of the microwave rays are suppressed.
  • the pressed material mat 1 passes through the continuous furnace 4 on a forming belt or conveyor belt 17, which consists of a non-conductive material, so that it can be easily passed through the microwave oven 4 during operation. In principle, this can be the same forming belt on which the pressed material mat is spread. However, it is also within the scope of the invention to provide a separate, endless circulating mold belt 17 for the continuous furnace, so that the previously sprinkled on a first mold belt 2 Pressgutmatte 1 is subsequently delivered to a second form 17 which passes through the continuous furnace 4.
  • the waveguides 8 are formed, at least in sections, as waveguide slot antennas 8a, wherein these waveguide slot antennas 8a each have a plurality of outlet slots 9 for the coupling of the microwaves into the interior 7.
  • the waveguides 8 have a waveguide section in a basically known manner, which is then followed by a slot antenna section to form the waveguide slot antenna 8a.
  • the waveguide slot antenna 8a is thus a part of the waveguide 8, which defines the slot antenna section 8a of the waveguide 8, with respect to the longitudinal direction of the waveguide 8, the waveguide slot antenna 8a and the slot antenna section of the waveguide, respectively, having a length L, wherein in this longitudinal section with the length L, the outlet slots 9 are arranged.
  • the outlet slots 9 are arranged in a wall, namely in the antenna wall 18.
  • the waveguide or waveguide slot antennas 8a have a rectangular cross-section in the exemplary embodiment, wherein the antenna wall 18 with the outlet slots 9 (and the opposite wall) have a greater width B than the walls extending transversely thereto (which have a width or height H).
  • the width B of the waveguide slot antenna (as well as the waveguide) in about 2 times the height H.
  • the end wall 19 closes the waveguide slot antenna 8a at the microwave generator 6 opposite end of the waveguide 8. In this way forms itself in the waveguide 8 and in particular in the waveguide slot antenna 8a from a standing wave whose field is disturbed by the introduced into the antenna wall 18 slots 9 so that the microwaves directed through the slots 9 enter the interior of the furnace and the Pressgutmatte Heat 1.
  • the waveguide slot antennas 8a protrude into the interior 7 of the housing 5 through the housing wall 10.
  • the waveguide 8 thus collar with its antenna portion (which forms the waveguide slot antenna) by a predetermined amount ( eg, by the length L of the waveguide slot antenna) into the interior of the housing.
  • the waveguide slot antennas 8a extend in the in Fig. 2 illustrated embodiment, transverse to the direction of passage D, which defines the furnace longitudinal direction. It can be seen that several waveguide slot antennas 8a (which run transversely to the passage direction) are arranged one behind the other along the passage direction D. A single one of these waveguide slot antennas is at Fig. 3 shown.
  • the microwave field M is directed in a targeted manner onto the pressed material mat 1 from the exit slots.
  • the slots 9 introduced into the antenna wall 18 of the slot antenna 8a are in FIG Fig. 4 shown. It can be seen that such a slot antenna 8a or its antenna wall 18 (at least) two parallel rows of slots 9 ', each having a plurality of spaced-apart slots 9 have.
  • the two rows of slots 9 ' are arranged at a distance A from one another and the individual slots 9 of a row of slots 9' are arranged at a distance a one behind the other.
  • the two rows of slots 9 ' are arranged offset from the center line X of the antenna wall 18, ie they have a distance V as an offset to the center line X.
  • the slots 9 themselves are rectangular with a length I formed.
  • Fig. 5 is simplified, a modified embodiment of the invention shown, in which the waveguide slot antenna 8a are not arranged transversely, but parallel through the direction of passage D so that they extend along the direction of passage. It is also possible here to project a plurality of waveguide slot antennas 8a, which are then preferably arranged transversely to the passage direction next to one another. This is in Fig. 5 not shown.
  • the waveguide slot antennas 8a protrude through the housing shell 10 in the interior 7 of the housing 5, so that the waveguide slot antennas 8a have a separate housing 5 from the antenna housing.
  • a modified embodiment is shown in simplified form, in which the waveguide slot antenna 8a is externally connected to the housing 5, so that the antenna wall 18 is formed by a portion of the housing 5 and the housing shell 10 and the antenna wall itself a part of the housing or the housing shell forms.
  • the slots 9 are in this embodiment, as it were in the Housing shell 10 introduced.
  • This can be z. B. realize that a cross-sectionally U-shaped metallic tube is attached to the side of the housing 5, 10 and placed so that together with the housing wall a waveguide with a rectangular cross section is formed, wherein the slots 9 are then introduced into the housing wall ,
  • Such an embodiment can also be realized in a housing 5 that no rectangular cross-section, but z. B. has an oval cross section, wherein the waveguide slot antenna can then be curved and adapted to the outer circumference of the oval housing. This is not shown in the figures.
  • Fig. 2 Incidentally, it can be seen that six microwave generators with six waveguides are provided, so that consequently six waveguide slot antennas protrude into the housing.
  • Each microwave generator can produce a power of 100 KW.
  • the Pressgutmatte can z. B. at a temperature of 20 ° C to 40 ° C, z. B. enter 35 ° C in the oven and at a temperature of 70 ° C to 100 ° C, z. B. preheated 80 ° to 90 ° C.
  • each individual microwave generator 6 has a magnetron 20 and a Schumacher 15 and an anode voltage generator 22 and a cooling 23 and an insulator 24.
  • a cooling and / or ventilation 25 is indicated for the oven.
  • the irradiation takes place only from above, d. H.
  • the slot antennas are located above the mat.
  • waveguide slot antennas can also be arranged below the mat, with which the mat is irradiated from below.

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  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Biotechnology (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Furnace Details (AREA)
  • Waveguide Aerials (AREA)
EP17191051.6A 2016-10-12 2017-09-14 Four à réchauffer continu permettant le chauffage continu d'une nappe Active EP3310130B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016119463.8A DE102016119463A1 (de) 2016-10-12 2016-10-12 Durchlaufofen zur kontinuierlichen Erwärmung einer Pressgutmatte

Publications (3)

Publication Number Publication Date
EP3310130A2 true EP3310130A2 (fr) 2018-04-18
EP3310130A3 EP3310130A3 (fr) 2018-05-16
EP3310130B1 EP3310130B1 (fr) 2022-08-03

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EP17191051.6A Active EP3310130B1 (fr) 2016-10-12 2017-09-14 Four à réchauffer continu permettant le chauffage continu d'une nappe

Country Status (4)

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US (1) US20180099431A1 (fr)
EP (1) EP3310130B1 (fr)
CN (1) CN107932685B (fr)
DE (1) DE102016119463A1 (fr)

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DE102019112634B3 (de) * 2019-05-14 2020-10-15 Siempelkamp Maschinen- Und Anlagenbau Gmbh Vorrichtung zur kontinuierlichen Erwärmung einer Pressgutmatte

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PL2920533T3 (pl) * 2012-11-16 2019-03-29 Nuwave Research Inc. Aparatura i sposób do odwadniania za pomocą promieniowania mikrofalowego
US20170334091A1 (en) * 2014-10-27 2017-11-23 Corning Incorporated Systems and methods for drying skinned ceramic wares using recycled microwave radiation
DE202015102422U1 (de) 2015-05-11 2016-08-15 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zum kontinuierlichen Erwärmen von Material
DE102016110808A1 (de) * 2016-06-13 2017-12-14 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren zum kontinuierlichen Erwärmen einer Materialbahn und Durchlaufofen

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US20180099431A1 (en) 2018-04-12
CN107932685B (zh) 2020-09-18
EP3310130A3 (fr) 2018-05-16
CN107932685A (zh) 2018-04-20
EP3310130B1 (fr) 2022-08-03

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