EP0303887B1 - Vorrichtung zur Wärmebehandlung einer Warenbahn - Google Patents

Vorrichtung zur Wärmebehandlung einer Warenbahn Download PDF

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Publication number
EP0303887B1
EP0303887B1 EP88112556A EP88112556A EP0303887B1 EP 0303887 B1 EP0303887 B1 EP 0303887B1 EP 88112556 A EP88112556 A EP 88112556A EP 88112556 A EP88112556 A EP 88112556A EP 0303887 B1 EP0303887 B1 EP 0303887B1
Authority
EP
European Patent Office
Prior art keywords
bypass
fan
opening
housing
fan housing
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 - Lifetime
Application number
EP88112556A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0303887A1 (de
Inventor
Harry Gresens
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.)
Brueckner Trockentechnik GmbH and Co KG
Original Assignee
Brueckner Trockentechnik GmbH and Co KG
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 Brueckner Trockentechnik GmbH and Co KG filed Critical Brueckner Trockentechnik GmbH and Co KG
Priority to AT88112556T priority Critical patent/ATE68872T1/de
Publication of EP0303887A1 publication Critical patent/EP0303887A1/de
Application granted granted Critical
Publication of EP0303887B1 publication Critical patent/EP0303887B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • 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 device (according to the preamble of claim 1) for the heat treatment of a continuously moving web.
  • the drying air is circulated in the individual fields by means of fans, and a bypass flap can be provided in order to redirect the drying air during production so that it no longer passes through the Nozzles are blown onto the web.
  • the bypass flap is provided in the F-shaped transition piece between the fan housing and the nozzle boxes arranged above it.
  • a bypass opening is provided in the F-shaped transition piece provided between the fan housing and the nozzle boxes arranged above it, immediately adjacent to the entrance of each nozzle box.
  • a common bypass flap for partially or completely closing the nozzle box inlet or the bypass opening is assigned to the entrance of each nozzle box and the bypass opening arranged next to it.
  • the bypass flaps can be controlled by drives in such a way that the nozzle box inlets are opened and the bypass openings are closed during normal operation of the device, while the nozzle box inlets are closed when the device is at a standstill and the bypass openings are opened so that a direct connection to the return flow space can be established when the device is at a standstill. In this way, similar operating and operating conditions result as in the previously described embodiments known from practice.
  • a bypass secondary duct is provided, the inlet opening in the vicinity of the bypass opening can be closed or opened by a special design on the one hand of this secondary duct and on the other hand the outside of the throttle valve assigned to the lower nozzle box .
  • the throttle flaps assigned to the upper and lower nozzle boxes are completely closed - by separate motor drives or a common drive - when the bypass opening is to be opened while being opened again to the same extent as the bypass opening is closed.
  • the invention is therefore based on the object, while avoiding the disadvantages of the known designs, to design a device of the type mentioned in the preamble of claim 1 such that, with a simplified design of the device, the air flowing out through the open bypass opening practically does not come into contact with the web is coming.
  • bypass opening By arranging the bypass opening to be opened or blocked by a bypass flap in the lower region of the fan housing, specifically in one side wall, this can be done this bypass opening when the bypass flap is open, the circulating air (as well as the fan housing in the lower part of the device) reaches the suction opening of the return air duct without coming into contact with the material web in the upper part of the device, which means that when the Bypass flap achieves a real bypass flow of the circulating air and any influence of the drying air on the stationary web is avoided.
  • the arrangement of the bypass opening in the lower area of the fan housing, ie on one of the inlet side of the nozzle boxes, is proportionate distant location also allows (in particular in connection with some other design features yet to be discussed) when the bypass flap is open, a pressure reduction on the inlet side of the nozzle boxes that is so large that even when the throttle valves are open, no appreciable air flow enters the nozzle boxes.
  • the solution according to the invention thus opens up the possibility of not having to close the throttle flaps when the bypass flaps are opened (thus leaving the throttle flaps in their normal operating position during bypass operation), which leads to a significantly simplified construction and control.
  • the fan housing is rectangular in a vertical longitudinal section, the bypass opening being arranged in a side wall of this fan housing, which is formed by a flat, vertically arranged surface.
  • the suction opening of a return air duct is located directly opposite the bypass opening of the adjacent treatment zone, at approximately the same height (in the lower part of the tensioning machine) and at a relatively short distance.
  • the bypass air flowing out through the bypass opening reaches the return air duct of the adjacent treatment zone in the shortest possible way (and practically without any contact with the material web located much higher than the flow path of the bypass air).
  • a tensioning machine dryer is shown as a device for the heat treatment of a continuously moving web 1, which contains a plurality of treatment zones 2, 2a, 2b, etc., which follow one another in the direction of movement of the web.
  • It contains a fan 3 which serves to promote a circulating air flow and which is driven by a motor 5 arranged outside the machine housing 4.
  • the fan 5 is arranged in a fan housing 6 which has a rectangular shape in a vertical longitudinal section (perpendicular to the plane of the drawing in FIG. 2).
  • the fan housing 6 At the top of the fan housing 6 there is an F-shaped transition piece 7, with which a group of upper nozzle boxes 8 and lower nozzle boxes 9 are connected (the individual nozzle boxes belonging to a group lie in the direction of movement of the web, ie perpendicular to the plane of the drawing) Fig.1, a short distance behind each other).
  • a return air duct 11 which is provided at one end with one or two suction openings 12a, 12b closed by a grille and at its other end via a connecting piece 13 with the suction side of the fan 3 connected is.
  • adjustable throttle valves 14, 15 are arranged, which can be pivoted about axes 14a, 15a and, depending on their position, the air flow entering the nozzle boxes 8 and 9, respectively throttle more or less.
  • the fans (e.g. 3, 3a) of adjacent treatment zones (e.g. 2, 2a) are each arranged on different long sides of the device.
  • An approximately rectangular bypass opening is provided in the side wall of the fan housing 6 facing the return air duct (e.g. 11a) of the adjacent treatment zone (e.g. 2a), which can be opened or closed by a bypass flap 16.
  • the bypass opening of the fan housing 6 which is opened or closed by the bypass flap 16 is located directly opposite (and, as can be seen from FIG. 1, at approximately the same height) to the suction opening 12a of the return air duct 11a the neighboring treatment zone.
  • the side wall of the fan housing provided with the bypass opening is replaced by a flat, vertically arranged one Surface formed.
  • the bypass flap 16 can be pivoted by means of a vertical actuating shaft 17, which is mounted in the machine housing 4, the upper end of this actuating shaft 17, which is used to engage a pneumatic or electrical actuator, being passed through the ceiling of the machine housing 4.
  • a bypass opening with a bypass flap 16, 16 ' is provided in both side walls of the fan housing 6 facing the return air ducts of the adjacent treatment zones.
  • the return air duct 11 can, as already mentioned above, also be provided on both sides with a suction opening 12a, 12b, but it is in principle also possible to make do with a single suction opening 12a.
  • bypass flaps 16 are closed and the throttle flaps 14, 15 are more or less open.
  • the drying air circulated by the fan 3 is blown through the nozzle boxes 8 and 9 onto the material web 1 and passes through the return air duct 11 back to the fan 3 (filter and heating devices can be provided in the return air duct 11 in a known manner).
  • bypass flaps 16, 16 ' open, while the throttle valves 14, 15 can remain in their operating position if desired.
  • the pressure in the fan housing 6 and in particular in the F-shaped transition piece 7 located above it completely collapses, so that practically no air flows into the nozzle boxes 8 and 9 even when the throttle valves 14, 15 are open .
  • the drying air circulated by the fan 3 rather exits through the open bypass flaps 16, 16 '(cf. arrows 18 in FIG. 2) and reaches the directly opposite suction openings 12a, 12b of the adjacent return air ducts by the shortest route. In this way there is a circulation of the bypass air in the lower area of the chamber 10, i.e. far below the web 1, which is practically not touched by the bypass air. In this way, an undesirable exposure to air of the stationary web is definitely avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP88112556A 1987-08-16 1988-08-02 Vorrichtung zur Wärmebehandlung einer Warenbahn Expired - Lifetime EP0303887B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88112556T ATE68872T1 (de) 1987-08-16 1988-08-02 Vorrichtung zur waermebehandlung einer warenbahn.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3727280 1987-08-16
DE19873727280 DE3727280A1 (de) 1987-08-16 1987-08-16 Vorrichtung zur waermebehandlung einer warenbahn

Publications (2)

Publication Number Publication Date
EP0303887A1 EP0303887A1 (de) 1989-02-22
EP0303887B1 true EP0303887B1 (de) 1991-10-23

Family

ID=6333854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112556A Expired - Lifetime EP0303887B1 (de) 1987-08-16 1988-08-02 Vorrichtung zur Wärmebehandlung einer Warenbahn

Country Status (4)

Country Link
EP (1) EP0303887B1 (es)
AT (1) ATE68872T1 (es)
DE (2) DE3727280A1 (es)
ES (1) ES2026230T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844692A1 (de) * 1998-09-29 2000-03-30 Brueckner Apparatebau Gmbh Vorrichtung zur Wärmebehandlung einer Warenbahn

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9300199A (nl) * 1993-02-01 1994-09-01 Stork Contiweb Droger met verkorte heropstart.
DE19804396A1 (de) * 1998-02-04 1999-08-05 Brueckner Apparatebau Gmbh Vorrichtung zur Wärmebehandlung einer Warenbahn
US8222874B2 (en) 2007-06-26 2012-07-17 Vishay-Siliconix Current mode boost converter using slope compensation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1121824A (fr) * 1954-04-05 1956-08-27 Séchoir perfectionné
US4137649A (en) * 1973-04-21 1979-02-06 Vepa Ag Apparatus for the heat treatment of textiles
DE2705760A1 (de) * 1977-02-11 1978-08-17 Artos Meier Windhorst Kg Vorrichtung zum trocknen von breitgefuehrten textilbahnen u.dgl.
DE3104556A1 (de) * 1980-12-03 1982-08-26 Brückner Trockentechnik GmbH & Co KG, 7250 Leonberg Vorrichtung zur waermebehandlung von bahnfoermigem gut
DE3116838A1 (de) * 1981-04-28 1982-11-11 Brückner Trockentechnik GmbH & Co KG, 7250 Leonberg Vorrichtung zur heissluft-trocknung von textilgut
DE3336331C2 (de) * 1983-10-06 1985-12-05 A. Monforts GmbH & Co, 4050 Mönchengladbach Konvektionstrocken- und/oder -fixiermaschine
DE3419531A1 (de) * 1984-05-25 1985-11-28 Babcock Textilmaschinen GmbH, 2105 Seevetal Anordnung zur vermeidung der beschaedigung von warenbahnen bei der trockenwaermebehandlung mittels stroemender behandlungsmittel
DE3627904A1 (de) * 1986-08-16 1988-02-18 Monforts Gmbh & Co A Konvektionstrocken- und/oder -fixiermaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844692A1 (de) * 1998-09-29 2000-03-30 Brueckner Apparatebau Gmbh Vorrichtung zur Wärmebehandlung einer Warenbahn

Also Published As

Publication number Publication date
DE3727280A1 (de) 1989-03-02
DE3865774D1 (de) 1991-11-28
ES2026230T3 (es) 1992-04-16
ATE68872T1 (de) 1991-11-15
EP0303887A1 (de) 1989-02-22

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