EP2378229A1 - Rame - Google Patents

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Publication number
EP2378229A1
EP2378229A1 EP11425094A EP11425094A EP2378229A1 EP 2378229 A1 EP2378229 A1 EP 2378229A1 EP 11425094 A EP11425094 A EP 11425094A EP 11425094 A EP11425094 A EP 11425094A EP 2378229 A1 EP2378229 A1 EP 2378229A1
Authority
EP
European Patent Office
Prior art keywords
fan
flow conduit
baffle plate
air
stenter
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Withdrawn
Application number
EP11425094A
Other languages
German (de)
English (en)
Inventor
Guido Giorgetti
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.)
Unitech Textile Machinery SpA
Original Assignee
Unitech Textile Machinery SpA
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 Unitech Textile Machinery SpA filed Critical Unitech Textile Machinery SpA
Publication of EP2378229A1 publication Critical patent/EP2378229A1/fr
Withdrawn legal-status Critical Current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
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects

Definitions

  • the present invention relates to improvements in machines for treating fabrics and in particular in so-called stenters for drying fabrics.
  • machines called stenters are used for drying fabrics continuously, substantially consisting of a drying oven wherethrough the fabric is fed in a substantially continuous manner for being impinged by a hot air flow.
  • the fabric is engaged to chain conveyor members that hold it stretched and move it forward between two overlapped blowing members.
  • Machines of this type are described for example in EP-A-0471162 and in EP-A-0935112 .
  • two separate fans are used in these machines for sucking air from a flow conduit and pushing it into two overlapped manifolds, each feeding a respective blowing member.
  • two fans suck in different air flow rates.
  • the heat generator comprises a burner that operates blown-wise, that is, the flame whereof burns inside the air flown sucked in by the machine.
  • EP-A-1.262.726 describes a stenter wherein the fabric drying air is indirectly heated through heat exchange with a combustion gas that circulates in a heat recovery exchanger in flow connection with the combustion chamber of a burner.
  • the air circuit is made so as to optimize the thermal exchange between the air circulating outside the conduits of the heat exchanger and the combustion gases that circulate within said conduits.
  • a stenter which comprises: a fabric feeding path; above and below said path, respectively a first blowing member and a second blowing member; a heat generator for heating an air flow; a first fan for feeding hot air towards the first blowing member and a second fan for feeding hot air towards the second blowing member; an air flow conduit from the heat generator to said first fan and to said second fan.
  • baffle plates are arranged in the flow conduit, which favor the mixing of the air flows sucked by said first fan and said second fan.
  • the baffle plates are arranged at two different heights within said flow conduit.
  • the baffle plates are arranged inclined, according to two different inclinations, relative to the longitudinal development of the air flow conduit between the heat generator and said first fan and said second fan.
  • At least two bottom baffle plates and at least two top baffle plates arranged at different heights and with different inclinations in the flow conduit, defining an intermediate mixing zone between the heat generator and the first and second fan, wherein air currents mix, sucked by means of the two fans from the heat generator to suction inlets associated to the two fans.
  • the first fan and the second fan are controlled independently of one another, for example by two inverter motors.
  • Fig. 1 shows a drying machine of a fabric fed continuously and in open width, so-called stenter, globally indicated with reference numeral 1. More in particular, in Fig. 1 the machine is shown from the fabric inlet side.
  • This figure shows two blowing members 3 and 5, respectively a top and a bottom member, developing according to substantially horizontal planes, spaced from one another, whereinbetween a fabric feeding path P is defined.
  • the blowing members 3 and 5 may be made in various manners.
  • the blowing members may each comprise a series of cross conduits 3A and 5A extending in a cross direction relative to the fabric feeding direction F along path P.
  • Each conduit 3A, 5A has holes, whereof Fig. 1 only shows holes 5B of the bottom conduits 5A. Air is blown through these holes towards the corresponding fabric face.
  • an air flow conduit develops, which is globally indicated with reference numeral 7.
  • the air flow conduit 7 extends crosswise relative to the fabric feeding direction F along path P between the blowing members 3, 5.
  • a heat generator is arranged at one end of the flow conduit 7, for example a gas burner 9, which generates the heat for heating the air that through the flow conduit 7 is sucked by means of two fans that feed the fan 3A and 5A thereof.
  • the fans are schematically shown in Fig. 6 and in Figs. 3A and 4A they are shown along with the case and the respective supply thereof, and are labeled with reference numerals 11 and 13.
  • Fans 11 and 13 are seated into respective cases 15 connected to unions 17, 18 of the flow conduit 7 and are actuated by separate motors 11M and 13M which may be controlled independently of one another through a programmable central control unit, not shown.
  • a programmable central control unit not shown.
  • the two fans seated in cases 15 push hot air sucked from the flow conduit 7 towards channels 19, 20 that feed the air respectively to a top case 3C of the blowing member 3 and to a bottom case 5C of the bottom blowing member 5 (see Fig. 1 ).
  • the two fans may be driven independently of one another by two motors, not shown, so as to take different rotating speeds and thus operate in different points of the respective characteristic curves according to the operating conditions required for the machine. As a consequence thereof, the two fans 11 and 13 may suck in different amounts of air.
  • Fig. 4 the flow conduit 7 is shown partly open.
  • Fig. 4A the flow conduit is shown from a different angle, still open at the top and fitted with the two fans 11 and 13, omitted in Fig. 4 .
  • the flow conduit is delimited by outside walls 21 that define an inside volume which, in the example shown, has an elongated rectangular section with chamfered corners.
  • the air is sucked into the flow conduit 7 passing through filters 23 removable through grips 23A from outside the machine with horizontal movement according to arrow f23.
  • the air sucked through filters 23 enters into the flow conduit 7 and is heated by the flame of burner 9.
  • a first bottom baffle plate 31, a second top baffle plate 33, a third bottom baffle plate 34 and a fourth top baffle plate 35 are arranged inclined relative to the longitudinal axis A-A of the flow conduit 7. More in particular, the bottom baffle plates 31 and 34 are substantially parallel to one another and define a first angle A1 ( Fig. 8 ) relative to axis A-A of the flow conduit 7, whereas baffle plates 33 and 35, parallel to one another and inclined relative to baffle plates 31 and 34, form a second angle A2 relative to axis A-A.
  • baffle plates 31 and 33 is approximately half or preferably a little larger than half the overall height of the cross section of the flow conduit 7, so that in the intersection points of the baffle plates or walls 31, 33 and 34, 35 there is a reciprocal jointing zone of the same baffle plates.
  • the bottom baffle plates 31 and 34 develop from bottom 7A of the flow conduit 7 up to about half the height of the conduit or slightly above the half, whereas baffle plates 33 and 35 develop from the top, that is, from the top wall 7B of the flow conduit 7 down to about half the height or slightly below the half.
  • the inside volume of the flow conduit 7 is divided into zones that generate crossed air currents. More in particular, in front of the burner baffle plates 31 and 33 force the air sucked by fans 11, 13 to follow a path schematically shown by arrows FA and FB.
  • the two flows FA and FB pass above the top edge of baffle plate 31 and cross in the zone comprised between the intersections of the pairs of baffle plates 31, 33 and 34, 35.
  • the air flows continue according to arrows FC and FD towards the suction inlets 17A, 18A of unions 17, 18 passing on the top edge of baffle plate 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Materials For Medical Uses (AREA)
  • Treatment Of Fiber Materials (AREA)
EP11425094A 2010-04-13 2011-04-08 Rame Withdrawn EP2378229A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITFI2010A000067A IT1399461B1 (it) 2010-04-13 2010-04-13 Ramosa.

Publications (1)

Publication Number Publication Date
EP2378229A1 true EP2378229A1 (fr) 2011-10-19

Family

ID=43088395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11425094A Withdrawn EP2378229A1 (fr) 2010-04-13 2011-04-08 Rame

Country Status (2)

Country Link
EP (1) EP2378229A1 (fr)
IT (1) IT1399461B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017039556A3 (fr) * 2015-08-31 2017-04-06 Has Group Makina Endustri A. S. Application de demi-cabine dans des unités de récupération

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107218787A (zh) * 2017-06-19 2017-09-29 湖州华艺盛丝绸文化有限公司 一种丝绸干燥设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL82150C (fr) *
EP0421182A2 (fr) * 1989-09-30 1991-04-10 FLEISSNER GmbH & Co. KG Maschinenfabrik Mélangeur d'air
EP0471162A1 (fr) 1990-08-17 1992-02-19 A. Monforts GmbH & Co Dispositif de séchage et/ou de fixation à convection
EP0935112A1 (fr) 1998-02-04 1999-08-11 Brückner Apparatebau GmbH Dispositif pour le traitement thermique d'une bande de matière
EP1134528A1 (fr) * 2000-03-06 2001-09-19 Brückner Trockentechnik GmbH & Co. KG Dispositif pour le traitement de bandes continues
EP1262726A1 (fr) 2001-05-29 2002-12-04 Brückner Trockentechnik GmbH & Co. KG Dispositif de traitement de bandes continues textiles
DE10239684A1 (de) * 2002-08-26 2004-03-11 Gerhard Voswinckel Luftverteilung in Trockner durch mäanderförmige Luftführung
EP1681090A1 (fr) * 2005-01-17 2006-07-19 Balcke-Dürr GmbH Dispositif et procédé de mélange d'un courant de fluide dans un conduit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB612012A (en) * 1945-10-09 1948-11-08 Harry Stewart Wheller Improvements in mixing chamber for use in heating or cooling devices
US4966546A (en) * 1989-05-01 1990-10-30 Mobil Oil Corporation Convective thermoforming oven
TWI404903B (zh) * 2007-03-09 2013-08-11 Sulzer Chemtech Ag 用於流體媒介物熱交換及混合處理之設備

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL82150C (fr) *
EP0421182A2 (fr) * 1989-09-30 1991-04-10 FLEISSNER GmbH & Co. KG Maschinenfabrik Mélangeur d'air
EP0471162A1 (fr) 1990-08-17 1992-02-19 A. Monforts GmbH & Co Dispositif de séchage et/ou de fixation à convection
EP0935112A1 (fr) 1998-02-04 1999-08-11 Brückner Apparatebau GmbH Dispositif pour le traitement thermique d'une bande de matière
EP1134528A1 (fr) * 2000-03-06 2001-09-19 Brückner Trockentechnik GmbH & Co. KG Dispositif pour le traitement de bandes continues
EP1262726A1 (fr) 2001-05-29 2002-12-04 Brückner Trockentechnik GmbH & Co. KG Dispositif de traitement de bandes continues textiles
DE10239684A1 (de) * 2002-08-26 2004-03-11 Gerhard Voswinckel Luftverteilung in Trockner durch mäanderförmige Luftführung
EP1681090A1 (fr) * 2005-01-17 2006-07-19 Balcke-Dürr GmbH Dispositif et procédé de mélange d'un courant de fluide dans un conduit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017039556A3 (fr) * 2015-08-31 2017-04-06 Has Group Makina Endustri A. S. Application de demi-cabine dans des unités de récupération

Also Published As

Publication number Publication date
IT1399461B1 (it) 2013-04-19
ITFI20100067A1 (it) 2011-10-14

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