EP0094825B1 - Konvektionstrocknung - Google Patents

Konvektionstrocknung Download PDF

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Publication number
EP0094825B1
EP0094825B1 EP83302767A EP83302767A EP0094825B1 EP 0094825 B1 EP0094825 B1 EP 0094825B1 EP 83302767 A EP83302767 A EP 83302767A EP 83302767 A EP83302767 A EP 83302767A EP 0094825 B1 EP0094825 B1 EP 0094825B1
Authority
EP
European Patent Office
Prior art keywords
radio frequency
electrodes
dryer
heating power
gas
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.)
Expired
Application number
EP83302767A
Other languages
English (en)
French (fr)
Other versions
EP0094825A2 (de
EP0094825A3 (en
Inventor
Peter Leslie Jones
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.)
Cessione ea Technology Ltd
Original Assignee
Electricity Council
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 Electricity Council filed Critical Electricity Council
Priority to AT83302767T priority Critical patent/ATE35454T1/de
Publication of EP0094825A2 publication Critical patent/EP0094825A2/de
Publication of EP0094825A3 publication Critical patent/EP0094825A3/en
Application granted granted Critical
Publication of EP0094825B1 publication Critical patent/EP0094825B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • F26B3/343—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 in combination with convection

Definitions

  • Such a dryer comprises a plurality of nozzles or jets for the heated air or gas and the material is passed between or below these jets or nozzles.
  • the material may be a web, e.g. of fabric, which is passed between the jets or nozzles or it may be material, e.g. sheet material or pieces, which is carried on a belt or other carrier between or below the jets or nozzles.
  • the radio frequency heating means heats the material internally so that heat transfer to the material occurs within the body of the material as well as on the surface thereof where the convective heating is effected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Centrifugal Separators (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Resistance Heating (AREA)
  • Electroplating Methods And Accessories (AREA)

Claims (8)

1. Fließbandtrockner mit einer Trockungszone, einer Einrichtung zum fortlaufenden Befördern des zu trocknenden Materials (10) durch die Trocknungszone, einer Vielzahl von Strahleinrichtungen oder Düsen (11, 13) in der Trocknungszone zum Richten von erhitztem Gas von einer Heizung (20) auf das Material, wobei die Strahleinrichtungen oder Düsen (11, 13) aus einem elektrisch leitenden Material gebildet sind und die Elektroden einer Hochfrequencyheizeinrichtung (15-19) darstellen, um ein Hochfrequenzfeld in der Trocknungszone zu erzeugen, dadurch gekennzeichnet, daß der Fließbandtrockner primär ein Heißgaskonvektionstrockner ist, wobei die der Heizung (20) eingegebene Heizleistung, die dazu benutzt wird, das Gas zu erhitzen, den Hauptteil der gesamten eingegebenen Heizleistung bildet, die sowohl der Heizung (20) als auch der Hochfrequenzheizeinrichtung (15-19) geliefert wird.
2. Konvektionstrockner nach Anspruch 1, bei dem die Elektroden alle unterhalb des zu trocknenden Materials angeordnet sind.
3. Konvektionstrockner nach Anspruch 1, bei dem die Elektroden über dem Material vorgesehen sind und mit Elektroden unter dem Material zusammenarbeiten.
4. Konvektionstrockner nach Anspruch 3, bei dem die Elektroden versetzt angeordnet sind, wobei die oberen Elektroden über Zwischenräumen zwischen den unteren Elektroden angeordnet sind.
5. Konvektionstrockner nach einem der vorhergehenden Ansprüche, bei dem die der Hochfrequenzheizeinrichtung (15-19) eingegebene Heizleistung zwischen einem Fünftel und einem Zehntel der gesamten dem Trockner gegebenen Heizleistung liegt.
6. Konvektionstrockner nach einem der vorhergehenden Ansprüche, bei dem die Strahleinrichtungen oder Düsen für das erhitzte Gas so angeordnet sind, daß sie ein Luftkissen liefern, um das zu trocknende Material zu halten.
7. Trocknungsverfahren, welches ein fortlaufendes Befördern eines zu trocknenden Materials durch eine Trocknungszone umfaßt, in der das Material gleichzeitig Strahlen oder Strömen eines erhitzten Gases und einer Heizung durch ein Hochfrequenzfeld ausgesetzt wird, dadurch gekennzeichnet, daß die Heizleistung, die dazu benutzt wird, das Gas zu erhitzen, den Hauptteil der gesamten Heizleistung bildet, die sowohl dem Gas als auch der Erzeugung des Hochfrequenzfeldes geliefert wird, so daß das Material primär durch Heißgaskonvektion getrocknet wird.
8. Verfahren nach Anspruch 7, bei dem die zum Erzeugen des Hochfrequenzfeldes gelieferte Heizleistung zwischen einem Fünftel und einem Zahntel der gesamten dem Trockner gelieferten Heizleistung liegt.
EP83302767A 1982-05-17 1983-05-16 Konvektionstrocknung Expired EP0094825B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83302767T ATE35454T1 (de) 1982-05-17 1983-05-16 Konvektionstrocknung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08214289A GB2123537B (en) 1982-05-17 1982-05-17 Convective drying
GB8214289 1982-05-17

Publications (3)

Publication Number Publication Date
EP0094825A2 EP0094825A2 (de) 1983-11-23
EP0094825A3 EP0094825A3 (en) 1985-01-16
EP0094825B1 true EP0094825B1 (de) 1988-06-29

Family

ID=10530398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83302767A Expired EP0094825B1 (de) 1982-05-17 1983-05-16 Konvektionstrocknung

Country Status (10)

Country Link
EP (1) EP0094825B1 (de)
JP (1) JPS5932777A (de)
AT (1) ATE35454T1 (de)
AU (1) AU565203B2 (de)
CA (1) CA1241537A (de)
DE (1) DE3377227D1 (de)
FI (1) FI831711L (de)
GB (1) GB2123537B (de)
NO (1) NO831748L (de)
ZA (1) ZA833515B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159613A (en) * 1984-05-31 1985-12-04 Stocker Electronics Company Timber drying
DE3515600C1 (de) * 1985-04-30 1986-10-09 Bayerische Motoren Werke AG, 8000 München Blastunnel zum Trocknen von lackierten Werkstuecken
US4638571A (en) * 1986-04-02 1987-01-27 Cook William A Radio frequency nozzle bar dryer
GB8628138D0 (en) * 1986-11-25 1986-12-31 Greenbank Eng Co Ltd Suction drying apparatus
GB8629882D0 (en) * 1986-12-15 1987-01-28 Greenbank Eng Co Ltd Convective drying apparatus
US5659972A (en) * 1995-10-06 1997-08-26 Avery Dennison Corporation Apparatus and method for drying or curing web materials and coatings

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB620956A (en) * 1947-02-04 1949-04-01 P R T Lab Ltd Improvements in or relating to heating and drying by radio frequency currents
GB914546A (en) * 1959-08-20 1963-01-02 Basf Ag Apparatus for the thermal treatment and/or reaction of materials in a high-frequencyfield
GB1236374A (en) * 1967-07-17 1971-06-23 Sericol Group Ltd Improvements in the drying of sheet or web material
FR2089900A5 (de) * 1970-04-23 1972-01-07 Menschner Johanne Textil
GB1424431A (en) * 1973-03-19 1976-02-11 Kanebo Ltd Process and apparatus for drying porous material
GB1486415A (en) * 1974-09-16 1977-09-21 Wira & Mather Method and means for drying objects of or containing textile fibres
GB1556296A (en) * 1978-02-10 1979-11-21 Magnetronics Ltd Apparatus for electromagnetic irradiation of a material web
DE2841371C2 (de) * 1978-09-22 1987-10-22 Siemens AG, 1000 Berlin und 8000 München Einrichtung zur Führung einer Papierbahn im kapazitiven Hochfrequenztrockner

Also Published As

Publication number Publication date
CA1241537A (en) 1988-09-06
NO831748L (no) 1983-11-18
AU1458083A (en) 1983-11-24
ATE35454T1 (de) 1988-07-15
FI831711A0 (fi) 1983-05-16
EP0094825A2 (de) 1983-11-23
GB2123537B (en) 1985-10-02
DE3377227D1 (en) 1988-08-04
EP0094825A3 (en) 1985-01-16
JPS5932777A (ja) 1984-02-22
FI831711A7 (fi) 1983-11-18
ZA833515B (en) 1984-01-25
FI831711L (fi) 1983-11-18
AU565203B2 (en) 1987-09-10
GB2123537A (en) 1984-02-01

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