EP2056052A2 - Agencement de séchoir pour bande de matériau - Google Patents
Agencement de séchoir pour bande de matériau Download PDFInfo
- Publication number
- EP2056052A2 EP2056052A2 EP08105670A EP08105670A EP2056052A2 EP 2056052 A2 EP2056052 A2 EP 2056052A2 EP 08105670 A EP08105670 A EP 08105670A EP 08105670 A EP08105670 A EP 08105670A EP 2056052 A2 EP2056052 A2 EP 2056052A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- material web
- radiators
- arrangement according
- web
- air
- 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- Withdrawn
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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
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
Definitions
- the invention relates to a material web dryer arrangement having at least one radiation dryer and a material web path guided along the radiation dryer with a direction of movement.
- a web dryer serves to dry a web.
- the invention will be described below with reference to a paper web as an example of a material web. But it is also applicable to other webs that need to be dried in a similar manner.
- WO 2005/085729 A2 shows a dryer arrangement, in which the material web is passed first to two radiation dryers and then to an air dryer. This arrangement of radiation dryer and air dryer can be repeated.
- the radiation dryers are designed here as flat radiators.
- EP 1 169 511 A similar embodiment is made EP 1 169 511 known. Again, the web is passed to two surface radiators and then an air dryer.
- EP 0 916 915 B1 known design drier are arranged on both sides of the web.
- DE 39 10 898 B4 shows a combination dryer, in which the material web is guided along a surface radiator and then through an air dryer, in which it is acted upon from both sides with warm air.
- GB 965,095 shows a drying device in which a material web is passed over drying cylinders. Between individual deflection points, the web can be additionally dried by radiators. These radiators are designed as surface heating elements. If such a surface heating element is arranged between two sections of the web path, then it gives way to heat both sides. The radiator may also be insulated on one side against heat dissipation if it is not disposed between two sections of the web path.
- Radiation dryers have the advantage over dryers or convection air blowers that allow relatively high heat transfer to the web to be dried.
- the design as a surface radiator also has the advantage that the material web can be acted upon relatively uniformly with heat.
- surface radiators have the disadvantage that a no longer negligible proportion of the energy is lost towards the back of the radiator.
- the invention has for its object to achieve the best possible efficiency in a web dryer arrangement.
- the radiation dryer has a plurality of cylindrical radiators, which are arranged in a plane, and the material web path extends on both sides of the plane.
- the emitters emit electromagnetic radiation, for example IR radiation (infrared radiation) or UV radiation (ultraviolet radiation).
- a cylindrical radiator is relatively easy to train. It emits radiant energy on all its radial sides. If the material web is now run along on both sides of the plane in which the emitters are arranged, then the power output by the emitters is absorbed almost completely by the material web, so that a good energy transfer can be achieved even without the use of reflectors and efficiency losses are reduced by the reflectors.
- the radiators can be operated with electrical energy or with combustion energy, for example with a gas heater. If an emitter fails or is otherwise defective, then this emitter can be easy to replace, without having to replace the entire dryer assembly.
- the axes of the radiators are arranged parallel to each other. This achieves a relatively uniform distribution of radiation in a simple manner.
- the axes of the radiators are directed parallel to the direction of movement.
- a plurality of groups of radiators are provided, wherein the radiators of a group are arranged in gap to radiators of another group.
- the groups are arranged one behind the other in the direction of movement.
- the radiators can then be arranged in a plane as before.
- the individual regions of the material web are then optionally heated successively, depending on which group of radiators the material web passes in an instant.
- the groups are arranged in parallel planes.
- the radiators of one group radiate through the gaps between the radiators of the other group.
- the axes are aligned in the direction of gravity.
- the sections of the material web which are dried by the material web dryer arrangement also run vertically in this case. This has the advantage that the moisture released by the Material web evaporates, can flow unhindered. Moreover, it is possible in this embodiment in a simple manner to absorb waste heat and continue to use.
- the material web path preferably has at least one non-contact deflection device between its sections on both sides of the plane. This is particularly advantageous if the material web has been provided with a coating which is to be dried by the material web dryer arrangement. In this case, the material web initially runs along one side of the plane with the radiators and is dried. Even if the coating has not yet been dried to its full extent, the material web can then be deflected by the non-contact deflection device in such a way that it can also be guided past the radiators on the other side of the plane. This makes it possible to achieve an excellent energy yield.
- the deflection device has a deflection radius which is greater than half the distance of the sections perpendicular to the plane.
- This embodiment has two advantages. On the one hand, the stress of the material web is smaller, because the deflection radius is greater. Nevertheless, it is possible to pass the material web relatively close to the radiators. The more dense the material web can be brought to the radiator, the better the heat transfer efficiency. On the other hand, the time required for changing the direction of the web can be extended, so that the temperature in the web, if necessary, can even out before the web is heated again by the radiator. In addition, moisture can evaporate when deflecting, which has been evaporated by the radiator.
- the deflection device is designed as an air drying device.
- the deflection can be added additional heat energy in the web, which further improves the drying process.
- the deflection device comprises gas nozzles which are acted upon by gas, which is heated by means of the radiator. So you use the waste heat of the radiator to heat the deflection. Thus, in the simplest case, cooling of the material web during deflection is avoided. In the best case, an additional drying power is transmitted to the material web by the waste heat of the radiator.
- the air drying device preferably has an air duct with a connection between supply air and exhaust air.
- air or another gas
- the air usually does not cool down to the ambient temperature when the material web is deflected during the deflection, so that less energy is required to bring it again to the temperature desired for drying. For this purpose, the waste heat from the spotlights is often sufficient.
- the air duct can advantageously have an additional heating. With the additional heating, it is possible to bring the air for the deflection again to the desired temperature.
- a web dryer assembly 1, as in Fig. 1 has a designed as an infrared radiator radiation dryer 2, which has a plurality of perpendicular to the plane of succession arranged cylindrical radiator 3.
- the radiator 3 can be electrically operated or gas-heated.
- the emitters 3 emit radiation 4, for example infrared radiation or ultraviolet radiation or another electromagnetic radiation with which thermal energy can be transmitted to a material web 6.
- the radiators 3 are arranged parallel to one another in a plane 5.
- the radiators 3 are arranged vertically, i. parallel to the direction of gravity.
- the material web 6 is guided along a material web path. A direction of movement is indicated by an arrow 7.
- the material web 6 is guided over a deflection roller 8 so that it can change its direction by 180 °.
- the material web 6 is guided past the emitters 3 as close as possible, so that with the aid of the radiation 4 thermal energy can be transmitted from the emitters 3 to the material web 6.
- the material web 6 is guided on both sides of the plane 5, so that the material web is guided past both on the front side and on the back of the radiator 3.
- almost the entire energy radiated by the radiators 3 can be transferred to the web 6 without the use of reflectors. This leads to an increase in temperature in the web 6, which in turn leads to the moisture contained in the web 6 being able to evaporate.
- Fig. 2 shows a modified embodiment of a material web dryer assembly 1 in plan view, wherein for explanation, the material web 6 has been removed so far that you can look at the radiator 3.
- the cylindrical radiators 3 are each arranged at a distance 9 next to each other. This distance 9 is required in many cases to avoid overheating of the radiator 3.
- the radiators 3 are aligned parallel to the direction of movement 7. In this case, the case could occur that the web 6 in the width direction, i. between its two edges 10, 11, is heated unevenly.
- the radiators 3 are arranged in two groups 12, 13.
- the radiators 3 of the two groups 12, 13 are in the same plane.
- the radiators 3 of the group 12 are arranged so that they are located at the position of a gap 9 of the other group 13.
- the emitters 3 of the group 12 are arranged on a holder 14 and the emitters of the group 13 on a holder 15.
- the arrangement of the radiator 3 of a group 12 on gap 9 of the other group 13 can be achieved.
- the emitters 3 of the two groups 12, 13 act in succession on the material web 6 in the direction of movement 7.
- Fig. 3 shows a third embodiment of a material web dryer assembly 1 and in Fig. 3a according to the view of Fig. 2 , ie in supervision with partially removed material web 6 and in Fig. 3b in front view.
- Fig. 3b shows that the cylindrical radiator 3 are arranged in two groups 12, 13, wherein the radiators 3 of the group 12 of a gap 9 between radiators 3 of the group 13 face.
- the emitters 3 of the group 12 are arranged in a different plane than the emitters 3 of the group 13. This can also be achieved that the material web 6 between its edges 10, 11 is applied uniformly with thermal energy.
- the radiators 3 of both groups 12, 13 can be arranged in this case on a holder 14. But it is also possible to arrange them on different brackets, by a lateral offset of the Brackets 14, 15 to achieve the desired orientation of the radiator 3 to gap 9.
- Fig. 4 shows an embodiment in which a material web 6, for example a paper web, in a coating device 16 on one side 17 is provided with a coating, for example a line.
- the side 17 faces the radiators 3. As the web 6 passes the radiators 3, it is dried on the coated side 17.
- the deflection device 18 has a plurality of air nozzles 19, which are directed against the side 17 of the material web 6.
- the air nozzles are supplied by a fan 20 which directs the air (or other gas) to the web 6 with sufficient pressure to support the web 6.
- the blower 20 is arranged in the direction of gravity above the radiator 3 and takes with the aid of a guide 21 shown schematically air or - in the case of gas-heated radiators - and the heated combustion exhaust gases from the environment, which have been heated by the radiator 3. This is essentially convection, i. the radiant energy transmitted to the web 6 is practically not reduced.
- the air ejected from the air nozzles 19 has been heated by the radiators 3, drying takes place even during the deflection in the deflection device 18.
- the air ejected from the air nozzles 19 can carry away moisture which is still present on the side 17 of the material web 6.
- the deflection device 18 has a deflection radius that is greater than half the distance between the two sections 22, 23 of the material web 6 on both sides of the plane 5, i. the material web 6 is initially moved away from the plane 5 by two deflection rollers 24, 25 which act on the uncoated side of the material web 6. As a result, the material web 6 is guided around the deflection device 18 with a wrap angle of at least 180 °, preferably even more, for example 300 °. Since the deflection radius is greater than half the distance between the two sections 22, 23, the load caused by the deflection of the material web 6 is kept small.
- the deflection radius is preferably two to four times half the distance between the two sections 22, 23. Despite the large deflection radius, it is possible to pass the material web 6 relatively close to the radiators 3.
- Fig. 5 shows a fifth embodiment of a web drying device 1, which is substantially the of Fig. 4 equivalent.
- an air duct system 26 with an exhaust air 27 and a supply air 28 for the deflecting device 18, which is also formed in this case as an air drying device.
- Supply air 27 and exhaust air 28 are connected by a connection 29 with each other.
- a blower 30 is arranged to circulate the air through the deflector 18.
- a heater 31 is arranged to bring the air in the deflector 18 to an elevated temperature when the heating by the radiator 3 is not sufficient.
- exhaust air outlet 32 Part of the exhaust air is removed from the circuit through an exhaust air outlet 32.
- fresh air inlet 33 fresh air is supplied.
- the positions of exhaust air outlet 32 and fresh air inlet 33 are shown here only symbolically. The actual design depends on the circumstances, in particular the number of available fans.
- the web 6 is first dried on its coated side 7 by the radiator 3, where it is passed relatively dense. Thereafter, the coated side 17 of the web 6 during deflection in the deflection 18 dried by air, which is ejected from the air nozzles 19. After passing through the deflecting device 18 designed as an air-drying device, the material web 6 is once again conducted past the emitters 3 in order to be dried by radiant energy.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Drying Of Solid Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710051963 DE102007051963A1 (de) | 2007-10-31 | 2007-10-31 | Materialbahntrockneranordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2056052A2 true EP2056052A2 (fr) | 2009-05-06 |
EP2056052A3 EP2056052A3 (fr) | 2009-07-01 |
Family
ID=40377583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08105670A Withdrawn EP2056052A3 (fr) | 2007-10-31 | 2008-10-27 | Agencement de séchoir pour bande de matériau |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2056052A3 (fr) |
DE (1) | DE102007051963A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105291576A (zh) * | 2015-11-30 | 2016-02-03 | 天津津亚新科技有限公司 | 一种油墨固化装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB965095A (en) | 1960-10-25 | 1964-07-29 | Horace Lilburn Smith | Improvements in or relating to methods and apparatus for paper drying |
EP0916915B1 (fr) | 1997-11-14 | 2001-07-11 | Solaronics Process | Système convecto-radiatif pour traitement thermique d'une bande continue |
EP1169511A1 (fr) | 1999-03-18 | 2002-01-09 | Metso Paper, Inc. | Procede et dispositif de stabilisation du deplacement d'une bande de papier dans une machine a papier ou analogue |
WO2005085729A2 (fr) | 2004-03-02 | 2005-09-15 | Nv Bekaert Sa | Installation de sechage pour bandes |
DE3910898B4 (de) | 1988-04-25 | 2005-11-17 | Metso Paper, Inc. | Verfahren zum Trocknen einer sich bewegenden Bahn und Kombinationstrockner |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1466383A (en) * | 1920-09-07 | 1923-08-28 | Rees Claude | Radiator for drying apparatus |
FR917276A (fr) * | 1945-11-13 | 1946-12-31 | étuve verticale | |
US3216638A (en) * | 1962-10-23 | 1965-11-09 | Nat Distillers Chem Corp | Air cushion method and apparatus for supporting moving film sheets |
GB1079677A (en) * | 1965-06-14 | 1967-08-16 | Ilford Ltd | Drying moisture-containing layers |
DE2540852C3 (de) * | 1975-09-13 | 1978-03-09 | Hoechst Ag, 6000 Frankfurt | Verfahren und Zusatzvorrichtung für Textil-Trocknungsmaschinen zum gleichmäßigen Trocknen einer Textilbahn |
NL8001944A (nl) * | 1980-04-02 | 1981-11-02 | Vries Jacob De | Inrichting voor het verwarmen van een vel- of baanvormig materiaal. |
DE3038686A1 (de) * | 1980-10-14 | 1982-06-09 | Franz 4834 Harsewinkel Boehnensieker | Vorrichtung zum trocknen von bedruckten folienbahnen |
DE4317400C2 (de) * | 1993-05-25 | 1997-11-27 | Oliver Deppe | Vorrichtung zum Trocknen von bedruckten Materialbahnen |
DE10044676C2 (de) * | 2000-09-09 | 2002-08-01 | Vits Maschinenbau Gmbh | Wendestange |
-
2007
- 2007-10-31 DE DE200710051963 patent/DE102007051963A1/de not_active Withdrawn
-
2008
- 2008-10-27 EP EP08105670A patent/EP2056052A3/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB965095A (en) | 1960-10-25 | 1964-07-29 | Horace Lilburn Smith | Improvements in or relating to methods and apparatus for paper drying |
DE3910898B4 (de) | 1988-04-25 | 2005-11-17 | Metso Paper, Inc. | Verfahren zum Trocknen einer sich bewegenden Bahn und Kombinationstrockner |
EP0916915B1 (fr) | 1997-11-14 | 2001-07-11 | Solaronics Process | Système convecto-radiatif pour traitement thermique d'une bande continue |
EP1169511A1 (fr) | 1999-03-18 | 2002-01-09 | Metso Paper, Inc. | Procede et dispositif de stabilisation du deplacement d'une bande de papier dans une machine a papier ou analogue |
WO2005085729A2 (fr) | 2004-03-02 | 2005-09-15 | Nv Bekaert Sa | Installation de sechage pour bandes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105291576A (zh) * | 2015-11-30 | 2016-02-03 | 天津津亚新科技有限公司 | 一种油墨固化装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2056052A3 (fr) | 2009-07-01 |
DE102007051963A1 (de) | 2009-05-07 |
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