EP0079992B1 - Appareil de séchage de tissus - Google Patents

Appareil de séchage de tissus Download PDF

Info

Publication number
EP0079992B1
EP0079992B1 EP19810305521 EP81305521A EP0079992B1 EP 0079992 B1 EP0079992 B1 EP 0079992B1 EP 19810305521 EP19810305521 EP 19810305521 EP 81305521 A EP81305521 A EP 81305521A EP 0079992 B1 EP0079992 B1 EP 0079992B1
Authority
EP
European Patent Office
Prior art keywords
fabric
chamber
steam
stenter
tunnel
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
EP19810305521
Other languages
German (de)
English (en)
Other versions
EP0079992A1 (fr
Inventor
Vyankatesh Apte Vasant
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.)
PRIMATEX MACHINERY PRIVATE Ltd
Original Assignee
PRIMATEX MACHINERY PRIVATE Ltd
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 PRIMATEX MACHINERY PRIVATE Ltd filed Critical PRIMATEX MACHINERY PRIVATE Ltd
Priority to EP19810305521 priority Critical patent/EP0079992B1/fr
Priority to DE8181305521T priority patent/DE3176638D1/de
Publication of EP0079992A1 publication Critical patent/EP0079992A1/fr
Application granted granted Critical
Publication of EP0079992B1 publication Critical patent/EP0079992B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • D06C3/02—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by endless chain or like apparatus
    • 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

  • This invention relates to a stenter for drying wet textile fabrics.
  • stenter includes a single layer stenter, a multi-layer stenter and a float-dryer
  • the word “chamber” includes a plurality of chambers.
  • a stenter is a machine essentially comprising (i) a mechanism to feed continuously a wetted textile fabric into a chamber in which (ii) processes such as equalising, finishing or curing are carried out on the moving fabric while it is being simultaneously dried, and (iii) a mechanism for delivering from said chamber dried processed fabric.
  • Stenters in current use employ dry air as the evaporating medium in its chamber. Good results could be obtained if the drying medium is moistureless air but that is never possible because the drying operation on wetted fabric must produce vapour and the air in the chamber can never be completely dry. However, it has been ascertained that the optimum ratio of air to moisture in the medium circulating in the chamber should be 9:1 by weight. Since evaporation is a continuous process, the said ratio will be fluctuating and in course of time, it is bound to fall below the optimum. It then becomes necessary to exhaust some of the medium from the chamber. As a result of the partial exhausting of the medium, a slight vacuum is created resulting in the sucking in of fresh air from gaps in the entry and exit of the fabric into and from the chamber. The fresh air has to be raised to the temperature of 150°C. The temperature of the exhausted medium is around 130°C. There is thus a distinct loss and expenditure of heat energy.
  • a stenter for drying wetted fabric by means of superheated steam comprising a chamber, a carrier for moving the fabric through the chamber, one or more fans (2, 3) located in respective fan housing(s) for propelling super- heated steam along one or more tunnels, mutually-parallel elongate venturi openings in the or each tunnel through which steam from the tunnel(s) is discharged against the fabric in the chamber, a channel between adjacent venturi openings for collecting and removing steam reflected from the fabric, one or more exhaust outlets from the chamber and means for producing heated steam so that it has a temperature of 150°C as it is discharged against the fabric, the arrangement being such that the steam discharged against the fabric is derived solely from the moisture of the fabric.
  • U.S. Patent Specification No. 3015893 describes a stenter in which steam evaporated from a textile fabric is heated and recirculated so that it is in contact with further textile.
  • This proposal has never, as far as we are aware, been used; the specification makes no disclosure of the critical temperature of 150°C generated from moisture evaporated during the drying process.
  • the provision of external steam is wasteful of heat and the use of temperatures above or below 150°C lead to a lowering of efficiency in the use of fuel.
  • the U.S. Patent makes no disclosure of the arrangement of venturi openings required by the present invention.
  • the chamber design has to be modified because of the change of medium from hot air to superheated steam.
  • Stenters known hitherto have a chamber provided with longitudinally aligned heat radiators, each radiator being located in the vicinity of a linear plurality of suction fans, each fan being located in a circular fan-housing opening into a tapering rectangular tunnel with openings in its side facing the moving fabric.
  • the openings are a plurality of holes.
  • the stenter of the present invention provides discharge of superheated steam by elongate venturi openings which preferably extend across the whole width of the fabric to direct a jet of superheated steam onto the moving fabric. Between adjacent venturi openings a channel is provided for the collecting and removing steam reflected from the surface preferably to a space in the vicinity of the means for producing heated steam, which is preferably a radiator.
  • the steam propelled down the tunnel may be guided into the venturi openings by means of mutually parallel slats positioned transverse to the venturi openings.
  • an exhaust is located in the top of the stenter chamber. This position of the exhaust is not desirable when the drying medium is superheated steam. Being lighter than air, the steam tends to rise to the top of the chamber leaving some air at the bottom. Furthermore, the medium in the chamber contains the vapour of oil or wax used in finishing the fabric, the condensation of which near the exhaust in the top of the chamber would produce droplets which might fall on the running fabric and damage it. Accordingly, it is preferred that in the stenter of the present invention one or more exhaust openings are provided in the bottom of the chamber. The bottom location of the exhaust openings ensure the complete removal of air from the chamber. With the change of medium in the chamber to super- heated steam, the possibility of the pressure inside the chamber exceeding the safety level cannot be ruled out.
  • This invention accordingly optionally provides each of the exhaust openings with a damper adapted to operate only when the pressure inside the chamber exceeds the safety level.
  • the damper may be actuated by a mechanism which is in turn actuated by a signal from a photoelectric cell which becomes activated only when the level in a manometer limb connected to the chamber goes down beyond the safety level.
  • 1 indicates the fabric sheet passing through the chamber Y.
  • 1a indicates the wet fabric entering the chamber Y 1b the dry processed fabric delivered from the chamber Y and 9 indicates the vertical section of the walls of the chamber Y along the sectional line AB.
  • the chamber has an exhaust opening 8 at its bottom.
  • the fabric 1 is partially dry after its passage from the entry to the line AB. It is being further dried by superheated steam which is made to circulate in the chamber Y by means of fans 2 and 3 located inside the fan-housings 4.1 and 5.1 and the truncated tunnels 4.2 and 5.2 respectively.
  • the tunnels have the openings 10 facing the fabric 1.
  • the vapour produced by the evaporation of the moisture in the fabric 1 and the steam reflected from the fabric 1 proceed to the space surrounding the radiators 6 and 7 located in the chamber Y near its walls 9.1 and 9.2 respectively.
  • the fans 2 and 3 are located below and above the radiators 7 and 6 respectively.
  • the arrows in Figure 7 show the direction of the circulation of the medium.
  • Figure 8 is a duplication of Figure 7 with this difference that the fabric 1 is moving in the opposite directions in the upper and lower halves of the figure.
  • 10 indicates the linear venturi openings in the tunnel 4.2 or 5.2 with the channel 11 between them. Immediately below the channel 11 are a series of parallel pendant slats 12.
  • a manometer 13 is connected to the chamber Y.
  • the arrows 14 indicate the position of a photoelectric cell.
  • a signal from the photoelectric cell actuates the motorized drive 15 of the damper 16 in the exhaust opening 8.
  • the wetted fabric 1a is fed into the chamber Y where it is dried by superheated steam produced by the heating elements or radiators 6 and 7.
  • the superheated steam is sucked in by the fans 2 and 3 through the opening in the fan housings 4.1 and 5.1 and pushed into the tunnels 4.2 and 5.2 from where the superheated steam is jet-discharged against the fabric 1 (a stage between 1a and 16) and is reflected along with vapour along the channel 11 towards the radiators 6 and 7 where it is heated to the requisite temperature and goes through the same cycle as described.
  • the steam entering the tunnels 4.2 and 5.2 is pushed into the gaps between the pendant slats 12 and therefrom into the venturi openings 10 from where the steam is discharged in a linear jet against the fabric 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)

Claims (6)

1. Elargisseuse pour sécher du tissu humide (1) au moyen de vapeur surchauffée, comprenant une chambre (Y), un support pour déplacer le tissu au travers de la chambre (Y), un ou plusieurs ventilateur(s) (2, 3) disposé(s) dans des carters de ventilateurs respectifs (4.1, 5.1) pour propulser de la vapeur surchauffée le long d'un ou de plusieurs tunnel(s) (4.2, 5.2), des ouvertures en venturi allongées (10) mutuellement parallèles dans le ou dans chacun des tunnels (4.2, 5.2) au travers desquelles la vapeur provenant du ou des tunnel(s) est déchargée contre le tissu (1) dans la chambre (Y), un canal (11) entre des ouvertures en venturi voisines pour recueillir et éliminer la vapeur réfléchie depuis le tissu, une ou plusieurs sortie(s) d'échappement (8) hors de la chambre (Y) et des moyens (6, 7) pour produire de la vapeur chauffée, de telle sorte qu'elle ait une température de 150°C tandis qu'elle est déchargée contre le tissu (1 ), la disposition étant telle que la vapeur déchargée contre le tissu (1) ne provient uniquement que de l'humidité du tissu (1).
2. Elargisseuse selon la revendication 1, caractérisée en ce qu'elle comporte une série de lamelles mutuellement parallèles (12) disposées pour guider la vapeur provenant du tunnel associé (4.2, 5.2) vers les ouvertures en venturi (10).
3. Elargisseuse selon la revendication 1 ou 2, caractérisée en ce que chacune des sorties d'échappement (8) est prévue dans le fond de la chambre (Y).
4. Elargisseuse selon la revendication 3, caractérisée en ce que chaque sortie d'échappement (8) est pourvue d'une soupape (16) qui est adaptée à être normalement fermée mais qui peut s'ouvrir lorsque la pression dans la chambre excède un seuil prédéterminé.
5. Elargisseuse selon la revendication 4, caractérisée en ce que chaque soupape (16) est réunie à un entraînement motorisé (15) dont le fonctionnement est déclenchable par un dispositif sensible à la pression (13, 14).
6. Elargisseuse selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'un ventilateur (2, 3) est adapté à alimenter une série de tunnels (4.2, 5.2) par une disposition des conduits d'échappement du ventilateur.
EP19810305521 1981-11-23 1981-11-23 Appareil de séchage de tissus Expired EP0079992B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19810305521 EP0079992B1 (fr) 1981-11-23 1981-11-23 Appareil de séchage de tissus
DE8181305521T DE3176638D1 (en) 1981-11-23 1981-11-23 Apparatus for drying wet textile fabrics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19810305521 EP0079992B1 (fr) 1981-11-23 1981-11-23 Appareil de séchage de tissus

Publications (2)

Publication Number Publication Date
EP0079992A1 EP0079992A1 (fr) 1983-06-01
EP0079992B1 true EP0079992B1 (fr) 1988-02-03

Family

ID=8188460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810305521 Expired EP0079992B1 (fr) 1981-11-23 1981-11-23 Appareil de séchage de tissus

Country Status (2)

Country Link
EP (1) EP0079992B1 (fr)
DE (1) DE3176638D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105066617A (zh) * 2015-08-14 2015-11-18 吴江金叶织造有限公司 一种设有拉幅机构的布铗链式热风烘干机
CN114812140A (zh) * 2022-05-11 2022-07-29 徐亿强 一种具有自动输送功能的纺织烘干装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1224122A (fr) * 1959-01-14 1960-06-22 Alsacienne Constr Meca Installation de vaporisage de tissus
US3015893A (en) * 1960-03-14 1962-01-09 Mccreary John Fluid flow control device for tenter machines utilizing super-heated steam
US3408748A (en) * 1966-08-17 1968-11-05 Dow Chemical Co Drying and recovery process
US3510954A (en) * 1968-04-10 1970-05-12 Dow Chemical Co Solvent removal
FR2106708A5 (fr) * 1970-09-22 1972-05-05 Chamouton Daniel
DE2944929A1 (de) * 1979-11-07 1981-05-21 Meinrad Goldach Gort Vorrichtung zur rueckgewinnung von resten von loesungsmitteln aus behandeltem textilgut

Also Published As

Publication number Publication date
DE3176638D1 (en) 1988-03-10
EP0079992A1 (fr) 1983-06-01

Similar Documents

Publication Publication Date Title
US4432147A (en) Energy efficient lumber dry kiln using solar collectors and refrigeration system
US2773312A (en) Apparatus for drying fabrics
US2408434A (en) Method and apparatus for drying materials uniformly throughout their mass
FI77707C (fi) Foerfarande foer kontaktloes torkning av en pappers- eller kartongbana.
US4777734A (en) Method and an apparatus for drying eggs, fruits or the like articles
US4011663A (en) Apparatus for drying fabrics
US2104135A (en) Carbonizing drier
US4439930A (en) Conveyor dryer and method of operation
US4127946A (en) Method for steam drying
EP0079992A1 (fr) Appareil de séchage de tissus
US3430352A (en) Method and apparatus for the heat-treatment of materials which can be stressed in a longitudinal direction
GB2088426A (en) Drying wet textile fabrics
US4658512A (en) Drying tower
WO2003029546A1 (fr) Rameuse
US4494683A (en) Steam kiln
WO1979000800A1 (fr) Traitement a la vapeur
US3376653A (en) Dryer ventilation
US2641119A (en) Ageing or reducing apparatus
GB2199644A (en) Dryer
CN216925055U (zh) 一种正压式控温控湿烘干系统
US3568331A (en) Suction drying apparatus
US1472741A (en) Drier
US3445938A (en) Ventilation system for a papermaking machine
US1470306A (en) Art of and apparatus for drying materials
US3686902A (en) Apparatus for the heat-treatment of textile material

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

AK Designated contracting states

Designated state(s): CH DE FR IT LI NL

17P Request for examination filed

Effective date: 19831110

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR IT LI NL

REF Corresponds to:

Ref document number: 3176638

Country of ref document: DE

Date of ref document: 19880310

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19881130

Ref country code: CH

Effective date: 19881130

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19890601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19890801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST