WO1997045686A1 - Secheur en continu a aimants permanents - Google Patents

Secheur en continu a aimants permanents Download PDF

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Publication number
WO1997045686A1
WO1997045686A1 PCT/IB1997/000644 IB9700644W WO9745686A1 WO 1997045686 A1 WO1997045686 A1 WO 1997045686A1 IB 9700644 W IB9700644 W IB 9700644W WO 9745686 A1 WO9745686 A1 WO 9745686A1
Authority
WO
WIPO (PCT)
Prior art keywords
dryer according
previous
permanent magnets
rotating cylinder
drum
Prior art date
Application number
PCT/IB1997/000644
Other languages
English (en)
Inventor
Gregory E. Elias
Original Assignee
Railfix N.V.
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 Railfix N.V. filed Critical Railfix N.V.
Priority to EP97922003A priority Critical patent/EP0901600A1/fr
Priority to AU27863/97A priority patent/AU2786397A/en
Priority to JP09541940A priority patent/JP2000511270A/ja
Priority to CA002254764A priority patent/CA2254764A1/fr
Publication of WO1997045686A1 publication Critical patent/WO1997045686A1/fr
Priority to NO985374A priority patent/NO985374D0/no

Links

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
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
    • F24V99/00—Subject matter not provided for in other main groups of this subclass
    • 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
    • F26B13/105—Drying webs by contact with heated surfaces other than rollers or drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/04—Heating arrangements using electric heating

Definitions

  • the present invention relates to a continuous dryer with permanent magnets, and in particular to a dryer for continuous sheet materials, wherein the drying heat is produced by eddy currents (also named Foucault currents) induced in a plate or a metal drum by a rotating cylinder comprising a plurality of permanent magnets.
  • eddy currents also named Foucault currents
  • Continuous dryers are known to comprise one or more heating metal surfaces, generally plane or cylindrical, which give heat to the material to be dried, driven on said surfaces.
  • the continuous running dryers are particularly used in the textile and paper industries for drying textiles and printed sheets respectively.
  • the material to be dried is heated by means of conduction, convection or radiation.
  • Each of the three kinds of dryers must be provided with a unit, for instance an electric unit or a steaming unit, which supplies a specific amount of thermal energy suitable for quickly drying, without overheating, the treated material, which is often flammable. Therefore, the known dryers are quite complicated, need a non-stop maintenance and further consume a remarkable amount of energy.
  • Object of the present invention is therefore to provide a dryer free from such drawbacks, namely a dryer of simple manufacture wherein the supply of thermal energy to the material to be dried is easily adjustable. Such an object is achieved by a dryer having the characteristics disclosed in claim 1.
  • FIG. 1 shows a longitudinal section schematic view of an embodiment of the dryer according to the present invention
  • FIG. 1 shows a cross- sectional schematic view of the dryer in Fig. 1;
  • - Fig. 3 shows a cross-sectional schematic view of a second embodiment of the dryer according to the present invention
  • - Fig. 4 shows a front schematic view of an embodiment of the dryer magnetic cylinder
  • Fig. 5 shows a front schematic view of a second embodiment of the diyer magnetic cylinder.
  • the dryer comprises a cylinder 1, preferably made of ferromagnetic steel, on whose bases two shafts 2,2 ⁇ rotatably mounted on two roller bearings 3,3', are fastened, coaxially with the cylinder.
  • One of the two shafts is keyed to a motor 4 whose rotation speed can be adjusted by known control means (not shown in figure).
  • a drum 7 of electroconductive material, preferably aluminium, rotatably mounted on shafts 2,2' by means of a pluraUty of rollers 8. is coaxially arranged on the outside of rotating cylinder 1.
  • the inner surface of drum 7 is suitably arranged at a minimum distance from permanent magnets 5 so that the whole drum 7 is immersed, without remarkable dispersions, in the magnetic field produced by magnets 5.
  • the material 9 to be dried usually made of a continuous paper sheet, a continuous piece of fabric or another winded material, turns round drum 7 for about a half of its cylindrical development.
  • toothing 10 engaged in a toothed wheel I I .
  • toothed wheel 1 1 is keyed on the hub of a oleodynamic pump 12 connected in series by an hydraulic circuit 13 to an oil tank 14 and to a throttle valve 15 for the oil flow.
  • Said circuit further comprises a safety-valve 16, parallel connected to valve 15, acting to compensate sudden pressure changes, if any, within hydraulic circuit 13.
  • valve 15 By opening or closing valve 15 it is thus possible to adjust the braking action of hydraulic circuit 13 on the rotation speed of drum 7 according to the rotation speed of cylinder 1, wherefore such drum warms up owing to the eddy currents induced by the rotating magnetic field produced by the relative rotation of cylinder 1.
  • the heating surface comprises, instead of a drum. a plane sheet 7, also preferably made of alumhiium, horizontally arranged in a tangent position with respect to cylinder 1.
  • a plane sheet 7 also preferably made of alumhiium, horizontally arranged in a tangent position with respect to cylinder 1.
  • This type of dryer is much more simple from a technical viewpoint than the preferred embodiment, but the adjustment of the amount of heat supplied to the material to be dried can be done only by adjusting at the same time the rotation speed of cylinder 1 and the forward speed of such material, wherefore the drying operation is no longer independent from this latter parameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Drying Of Solid Materials (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

L'invention concerne un sécheur, servant en particulier au séchage de matériaux en feuille continus, qui comprend au moins une surface qui transmet de la chaleur au matériau (9) à sécher et qui est formé par une plaque ou un tambour (7) métallique chauffés par des courants de Foucault induits par un cylindre rotatif (1) placé à proximité de ladite plaque et recouvert extérieurement d'une pluralité d'aimants permanents (5). Grâce à ce système de chauffage par induction, le sécheur selon la présente invention n'a plus besoin des unités de chauffage classiques, c'est-à-dire des unités à résistance électrique ou des unités à vapeur habituelles, lesquelles sont compliquées et difficiles à commander.
PCT/IB1997/000644 1996-05-29 1997-05-28 Secheur en continu a aimants permanents WO1997045686A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP97922003A EP0901600A1 (fr) 1996-05-29 1997-05-28 Secheur en continu a aimants permanents
AU27863/97A AU2786397A (en) 1996-05-29 1997-05-28 Continuous dryer with permanent magnets
JP09541940A JP2000511270A (ja) 1996-05-29 1997-05-28 永久磁石付き連続乾燥機
CA002254764A CA2254764A1 (fr) 1996-05-29 1997-05-28 Secheur en continu a aimants permanents
NO985374A NO985374D0 (no) 1996-05-29 1998-11-19 Kontinuerlig t°rkeapparat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI96A001079 1996-05-29
IT96MI001079A IT1282752B1 (it) 1996-05-29 1996-05-29 Essiccatore in continuo a magneti permanenti

Publications (1)

Publication Number Publication Date
WO1997045686A1 true WO1997045686A1 (fr) 1997-12-04

Family

ID=11374336

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1997/000644 WO1997045686A1 (fr) 1996-05-29 1997-05-28 Secheur en continu a aimants permanents

Country Status (7)

Country Link
EP (1) EP0901600A1 (fr)
JP (1) JP2000511270A (fr)
AU (1) AU2786397A (fr)
CA (1) CA2254764A1 (fr)
IT (1) IT1282752B1 (fr)
NO (1) NO985374D0 (fr)
WO (1) WO1997045686A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001094868A1 (fr) * 2000-06-06 2001-12-13 Sgm Gantry S.P.A. Sechoir continu avec aimants permanents a profil de temperature transversal reglable
WO2003053103A1 (fr) * 2001-12-19 2003-06-26 Nippon Magnetics Inc., Appareil de chauffage utilisant de la chaleur generee par courant de foucault
EP1479296A3 (fr) * 2003-05-22 2005-06-01 Masterfoods Austria OHG Dispositif pour le traitement thermique de produits alimentaires ou de fourrage, notamment pour cuire des pâtes, et installation pour la fabrication de produits préparés à base de matériau cuit
CN107543396A (zh) * 2017-08-23 2018-01-05 深睡（天津）科技发展有限公司 一种新型纺织烘干设备及其使用方法
CN108036620A (zh) * 2017-11-30 2018-05-15 彭素珍 一种纺织棉纱烘干机
EP3280686A4 (fr) * 2015-04-07 2018-12-12 Singnergy Corporation Pte Ltd. Appareil et procédé de séchage par évaporation amélioré

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3955888B2 (ja) * 2003-12-12 2007-08-08 トック・エンジニアリング株式会社 永久磁石式渦電流加熱装置
JP2006236856A (ja) * 2005-02-25 2006-09-07 Tok Engineering Kk 金属製缶の加熱装置
US20230221074A1 (en) * 2020-06-05 2023-07-13 4 Symbioses Inc Apparatus for drying sludge and method
CN112284106A (zh) * 2020-10-27 2021-01-29 常熟市全申化纤有限公司 一种涤纶丝连续式烘干机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301589A (en) * 1940-06-05 1942-11-10 Shepard William Gillard Drying of fruit pulp
FR2461426A1 (fr) * 1979-07-09 1981-01-30 Cem Comp Electro Mec Dispositif de chauffage par induction de produits longs et minces en defilement continu
GB2083729A (en) * 1980-09-05 1982-03-24 Kleinewefers Gmbh Roll such as a calender roll with electromagnetic heating
EP0067786A2 (fr) * 1981-06-16 1982-12-22 Beloit Corporation Appareil pour le chauffage de la paroi cylindrique d'un cylindre rotatif d'une machine à papier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301589A (en) * 1940-06-05 1942-11-10 Shepard William Gillard Drying of fruit pulp
FR2461426A1 (fr) * 1979-07-09 1981-01-30 Cem Comp Electro Mec Dispositif de chauffage par induction de produits longs et minces en defilement continu
GB2083729A (en) * 1980-09-05 1982-03-24 Kleinewefers Gmbh Roll such as a calender roll with electromagnetic heating
EP0067786A2 (fr) * 1981-06-16 1982-12-22 Beloit Corporation Appareil pour le chauffage de la paroi cylindrique d'un cylindre rotatif d'une machine à papier

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001094868A1 (fr) * 2000-06-06 2001-12-13 Sgm Gantry S.P.A. Sechoir continu avec aimants permanents a profil de temperature transversal reglable
WO2003053103A1 (fr) * 2001-12-19 2003-06-26 Nippon Magnetics Inc., Appareil de chauffage utilisant de la chaleur generee par courant de foucault
EP1479296A3 (fr) * 2003-05-22 2005-06-01 Masterfoods Austria OHG Dispositif pour le traitement thermique de produits alimentaires ou de fourrage, notamment pour cuire des pâtes, et installation pour la fabrication de produits préparés à base de matériau cuit
EP3280686A4 (fr) * 2015-04-07 2018-12-12 Singnergy Corporation Pte Ltd. Appareil et procédé de séchage par évaporation amélioré
AU2016244725B2 (en) * 2015-04-07 2021-01-28 Singnergy Corporation Pte Ltd Apparatus and method for improved evaporation drying
CN107543396A (zh) * 2017-08-23 2018-01-05 深睡（天津）科技发展有限公司 一种新型纺织烘干设备及其使用方法
CN108036620A (zh) * 2017-11-30 2018-05-15 彭素珍 一种纺织棉纱烘干机

Also Published As

Publication number Publication date
JP2000511270A (ja) 2000-08-29
ITMI961079A0 (it) 1996-05-29
AU2786397A (en) 1998-01-05
CA2254764A1 (fr) 1997-12-04
EP0901600A1 (fr) 1999-03-17
NO985374L (no) 1998-11-19
NO985374D0 (no) 1998-11-19
IT1282752B1 (it) 1998-03-31
ITMI961079A1 (it) 1997-11-29

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