EP1850080A1 - Mélangeur doté d'agents d'alimentation de micro-ondes ainsi qu'un procédé pour la manipulation de produits à mélanger - Google Patents
Mélangeur doté d'agents d'alimentation de micro-ondes ainsi qu'un procédé pour la manipulation de produits à mélanger Download PDFInfo
- Publication number
- EP1850080A1 EP1850080A1 EP07106523A EP07106523A EP1850080A1 EP 1850080 A1 EP1850080 A1 EP 1850080A1 EP 07106523 A EP07106523 A EP 07106523A EP 07106523 A EP07106523 A EP 07106523A EP 1850080 A1 EP1850080 A1 EP 1850080A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixer
- microwaves
- interior
- waveguide
- mix
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000000203 mixture Substances 0.000 title claims description 35
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims description 22
- 230000005855 radiation Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 235000013599 spices Nutrition 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000005457 optimization Methods 0.000 claims 1
- 238000001035 drying Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- NHWNVPNZGGXQQV-UHFFFAOYSA-J [Si+4].[O-]N=O.[O-]N=O.[O-]N=O.[O-]N=O Chemical compound [Si+4].[O-]N=O.[O-]N=O.[O-]N=O.[O-]N=O NHWNVPNZGGXQQV-UHFFFAOYSA-J 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
- F26B11/16—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a vertical or steeply-inclined plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/048—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum in combination with heat developed by electro-magnetic means, e.g. microwave energy
Definitions
- the invention relates to a mixer with means for feeding microwaves and a method for the treatment of mixed material with microwaves.
- the vertical mixer for drying solutions, crystalline substances or solids using microwaves known.
- the vertical mixer has in the interior a vertically extending shaft, are attached to the mixing tools, A microwave coupler is located above the inner space.
- the microwaves are fed through the upper end wall, as the mix will not damage the coupling here with minimal likelihood.
- a coupling through the lower end wall is difficult to accomplish, since drive units are arranged for the mixing tool in the lower area.
- a disadvantage of the known solution is that there is a relatively high risk that mix is burned or damaged.
- a horizontal mixer and drying process is from the EP 1 466 662 A1 known.
- the horizontal mixer known therefrom comprises mixing tools which are fastened to a horizontally mounted shaft.
- the horizontally mounted shaft is hollow and has openings on its periphery.
- a microwave generator is connected to the shaft so that microwaves can be fed into the hollow shaft and these microwaves pass through the openings into the interior of the horizontal mixer and then be able to dry mix. Also in this known solution threaten burns of the mix.
- a mixer comprises an interior with mixing tools therein and means for feeding microwaves into the interior.
- the means for feeding microwaves are arranged so that the microwaves in the lower half, preferably in the lower Third of the interior of the mixer can be fed.
- the feed via an end wall also allows a planar coupling of microwaves, the is advantageous to avoid combustion of mixed material improved.
- the feed via an end wall is such that the location of the feed is remote from the axis, are rotated with the mixing tools and in comparison close to a cylindrical surface of the interior of the mixer. This ensures that the microwave radiation impinges on mixed material where Mixture is mixed very intensively. This further reduces the risk of damage to mix by microwaves.
- the coupling for microwaves is in a horizontal mixer from the lowest point looked offset in the direction of rotation of the mixing tools. During operation, mixed material is moved away from the lowest point in the direction of rotation of the mixing tools. Therefore, it is advantageous to provide the coupling of microwaves in a region which is offset from the lowest point in the direction of rotation, under the direction of rotation is the direction to understand that causes mixing of a cylindrical wall by close-coupled mixing tools in Direction axis are promoted.
- Microwaves are fed to a mixer by default via a waveguide, the waveguide is preferably wholly or predominantly of a metal, the waveguide is electrically connected at its end to the metal of the mixer.
- a window permeable to microwaves shields the interior of a mixer from the waveguide.
- the commonly used material which causes this, consists of Teflon or quartz glass, Although these materials act as a window with respect to microwave rays and shield mix from, However, the risk is then relatively large that the material is not in the long term, the mechanical stresses In order to allow introduction of microwaves at the bottom of a mixer on the one hand, without having to fear on the other hand, that the window through which microwaves get into the mixer, mechanically damaged in the long run, this advantageously consists of a
- zirconium or silicon nitrite are also suitable for achieving improved mechanical stability in comparison with quartz glass or Teflon.
- a measuring unit for microwave radiation is provided, which is arranged along the waveguide for the detection of microwave radiation.
- reflected beams are to be measured with this measuring unit. Since it can be assumed that there is no relevant absorption in the waveguide and in the window, the reflected energy gives information about the energy converted in the mix. This is especially true when the mixer is sufficiently filled with mix, a degree of filling of at least 30% is regularly sufficient. Thus, the proper microwave coupling into the mix can be checked and controlled. Because the proportion of reflected microwave radiation informs about the proportion of microwaves that are converted into the mix.
- a pen tuner for optimizing the energy input is advantageously arranged by microwaves.
- the mixer is preferably a horizontal ploughshare mixer, this has in its interior a horizontally mounted shaft or axis with attached pflugscharähnlichen mixing tools, Below the shaft are the means for feeding the microwave into the interior of the mixer, in such a mixer is guaranteed in that the mixture below is mixed particularly intensively and evenly. This ensures particularly well that combustion of mixed material is avoided. It is also possible to use so-called Becker paddles in order to achieve particularly good mixing.
- the window through which microwaves enter the interior is preferably a more extensive plane-parallel surface, thus providing a relatively large uniformly radiating surface.
- the specific energy per unit area is relatively low. This ensures further improvement that Mischgutbrbrenn Heidelberg be avoided.
- mixed material is treated by this is mixed in a mixer and microwaves are coupled into the mix there during mixing, where a high density of mix occurs and a coupling of microwaves is avoided where there is a low density of mix is. Combustion of mixed material is thus minimized.
- microwaves can also be used to dry a mix, this would make little economic sense in the case of surface drying.
- the method is therefore preferably used for the treatment of mix, wherein the microwave causes a chemical reaction in the mix.
- the microwave causes a chemical reaction in the mix.
- B. Material properties of liquid resins can be changed or spices can be pasteurized.
- Thermal insulators are, for example, ceolite or vermiculite. No thermally insulator in the sense of the invention is glass.
- Drying using microwave radiation also makes sense in the case of mixed material with trapped moistures. Especially in combination with drying by generating a vacuum, it is then also possible to dry economically.
- microwaves via the front side, which is opposite to the other unit 2
- space problems are not to be feared.
- microwaves should both Front sides are introduced in order to fully grasp the mix, especially in such a case, an introduction also takes place via the end face, via which the axis of the mixing tool is driven.
- the mixer shown in Figure 1 comprises above a tubular access 7. About this u, a, mix can be filled or vacuum generated in the interior to dry, for example, in combination with microwaves mix.
- the lateral end wall 4 shown on the right in FIG. 1 can be loosened so as to have a convenient access to the interior. Such access may be useful, for example, for cleaning purposes.
- Fig. 2 shows an enlarged means for introducing microwaves through the end face. 4
- a seal is shown to the left next to it, which suitably consists of Teflon, left next to the seal 8 is an extension 9 shown.
- This attachment piece 9 serves to attach or fix the window 3 made of Al 2 O 3 , alumina is a suitable material both in terms of mechanical requirements and in terms of thermal stability, and alumina is also permeable to microwave radiation.
- An existing of elastic material O-ring 10 serves as a seal, the window 3 is held under clamping action, as well as the figure 3 illustrates in more detail.
- the diameter of the window changes stepwise and is smaller in the direction of the interior of the mixer, correspondingly complementary is provided in the front wall socket 1 1, so it is possible to use the relatively brittle ceramic as a window, without a Bruck to fear the material.
- the waveguide opening window 3 is round, since such a cross section is advantageous.
- the O-ring seal 10 serves to completely seal the interior of the mixer with respect to the outer space, as illustrated in particular FIG. 3.
- an advantageously inserted intermediate piece 12 is shown, which serves as a calming zone for returning waves, instead of an intermediate piece the extension 9 are made longer accordingly.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Microbiology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Constitution Of High-Frequency Heating (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610020245 DE102006020245A1 (de) | 2006-04-27 | 2006-04-27 | Mischer mit Mitteln zur Einspeisung von Mikrowellen sowie ein Verfahren für die Behandlung von Mischgut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1850080A1 true EP1850080A1 (fr) | 2007-10-31 |
Family
ID=38293692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07106523A Withdrawn EP1850080A1 (fr) | 2006-04-27 | 2007-04-19 | Mélangeur doté d'agents d'alimentation de micro-ondes ainsi qu'un procédé pour la manipulation de produits à mélanger |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1850080A1 (fr) |
| DE (1) | DE102006020245A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4622448A (en) * | 1982-02-19 | 1986-11-11 | Osaka Gas Company, Limited | Microwave vacuum dryer apparatus |
| DE3544270A1 (de) * | 1985-12-14 | 1987-06-25 | Kraftanlagen Ag | Verfahren und einrichtung zur trocknung kontaminierter fluessigkeiten und loesungen |
| US6242726B1 (en) * | 1996-11-21 | 2001-06-05 | George M. Harris | Adjustable microwave field stop |
| JP2004216694A (ja) * | 2003-01-14 | 2004-08-05 | Itsuwa Kogyo Kk | 使用済みｐｅｔボトルの粉砕物を乾燥結晶化処理するための装置 |
| WO2005007311A1 (fr) * | 2003-07-22 | 2005-01-27 | Groun Z Yugenkaisha | Equipement de traitement de dechets pour aliments et boissons |
-
2006
- 2006-04-27 DE DE200610020245 patent/DE102006020245A1/de not_active Withdrawn
-
2007
- 2007-04-19 EP EP07106523A patent/EP1850080A1/fr not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4622448A (en) * | 1982-02-19 | 1986-11-11 | Osaka Gas Company, Limited | Microwave vacuum dryer apparatus |
| DE3544270A1 (de) * | 1985-12-14 | 1987-06-25 | Kraftanlagen Ag | Verfahren und einrichtung zur trocknung kontaminierter fluessigkeiten und loesungen |
| US6242726B1 (en) * | 1996-11-21 | 2001-06-05 | George M. Harris | Adjustable microwave field stop |
| JP2004216694A (ja) * | 2003-01-14 | 2004-08-05 | Itsuwa Kogyo Kk | 使用済みｐｅｔボトルの粉砕物を乾燥結晶化処理するための装置 |
| WO2005007311A1 (fr) * | 2003-07-22 | 2005-01-27 | Groun Z Yugenkaisha | Equipement de traitement de dechets pour aliments et boissons |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006020245A1 (de) | 2007-10-31 |
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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 |
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| 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 IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
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| AX | Request for extension of the european patent |
Extension state: AL BA HR MK YU |
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| 17P | Request for examination filed |
Effective date: 20071123 |
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| 17Q | First examination report despatched |
Effective date: 20080117 |
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| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20121101 |