EP0648882A1 - Installation de traitement thermique d'une bande en déplacement continu, en particulier une bande textile - Google Patents

Installation de traitement thermique d'une bande en déplacement continu, en particulier une bande textile Download PDF

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Publication number
EP0648882A1
EP0648882A1 EP94810571A EP94810571A EP0648882A1 EP 0648882 A1 EP0648882 A1 EP 0648882A1 EP 94810571 A EP94810571 A EP 94810571A EP 94810571 A EP94810571 A EP 94810571A EP 0648882 A1 EP0648882 A1 EP 0648882A1
Authority
EP
European Patent Office
Prior art keywords
housing
web
fan
outlet opening
blower
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.)
Granted
Application number
EP94810571A
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German (de)
English (en)
Other versions
EP0648882B1 (fr
Inventor
Christian Strahm
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.)
Solipat AG
Original Assignee
Solipat AG
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25692238&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0648882(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Solipat AG filed Critical Solipat AG
Publication of EP0648882A1 publication Critical patent/EP0648882A1/fr
Application granted granted Critical
Publication of EP0648882B1 publication Critical patent/EP0648882B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers
    • 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 for heat treatment of a continuously guided web, in particular a textile web, according to the preamble of claim 1.
  • a device for heat treatment of a continuously guided web in particular a textile web
  • Such devices also called nozzle dryers or convection dryers, have long been known and used in the textile industry for treating fabrics and knitted fabrics.
  • Heated ambient air is usually used as the treatment agent, although other gaseous media or mixtures could also be used in certain applications.
  • a device of comparable type has become known, for example, from DD-A-255 201.
  • a problem with the known devices is that there is a turbulent flow in the housing and in particular also in the nozzle boxes, which leads to uneven temperature stratifications and thus to an unsatisfactory drying result.
  • the individual nozzle boxes are difficult to access from the outside and the heat balance of the entire system is relatively poor despite the use of insulation material.
  • the device as a whole should allow better accessibility for maintenance and repair work.
  • This object is achieved according to the invention with a device which has the features in claim 1. It Surprisingly, it has been shown that the fan does not have to be arranged as close as possible to the inlet opening of the nozzle boxes as in the known devices, but on the contrary that considerably better results are achieved if the distance between the fan and the air inlet into the nozzles is chosen as large as possible.
  • the housing has a ceiling wall and if the fan is arranged under the ceiling wall in the housing, the area of the material web also remains freely accessible on the fan side.
  • the axis of rotation of the fan can run vertically and the drive device can be arranged on the housing above the ceiling wall. As a result, the drive device is accommodated in a space-saving manner with optimal accessibility.
  • the heating device is arranged in the pressure chamber between the fan and the inlet opening on the nozzle box.
  • the heating device can be a radiator unit that can be connected to a heating medium source or a gas burner arranged on the ceiling wall in the flow direction.
  • the control parts and conveying means assigned to the gas burner can also be arranged on the housing ceiling.
  • a particularly optimal loading of the material web results if at least one upper and one lower nozzle box is arranged on both sides and if the amount of treatment agent supplied to the two nozzle boxes can be controlled by a flap articulated between the upper and the lower inlet opening. Through this flap, the homogeneous flow coming from the blower can easily be divided in terms of quantity, without this in turn leading to harmful turbulence.
  • the upper and lower inlet openings can be closed with bypass flaps which can be pivoted in the same direction, a bypass opening being arranged between the pressure chamber and the return flow chamber and the bypass opening being closable by means of the lower bypass flap.
  • the accessibility of the device is further improved in that the housing is provided with sliding or pivotable doors on both longitudinal sides.
  • an additional optimization of the heat balance is achieved if the device is provided in a manner known per se with an exhaust air duct, which extends parallel to the transport direction, for removing treatment medium from the housing and if this exhaust air duct is designed as a heat exchanger. This can be done by leading several pipes for the supply of fresh air into the housing through the exhaust air duct, the fresh air being preheatable.
  • the exhaust air duct is particularly advantageously arranged in the return flow space at the bottom of the housing, the pipes extending transversely to the exhaust air duct. In this way, fresh air is directly introduced into the return flow space from the outside through the housing wall and through the pipelines and is sucked in from there through the fan.
  • Optimal heat recovery results if groups of several pipes are arranged one above the other on a plane lying at an angle to the direction of transport.
  • the width of the outlet opening which extends parallel to the rotor axis, is reduced in relation to the housing width in the region of the rotor. This measure prevents the outlet opening from being completely filled by the flow just on the outside of the spiral.
  • the reduction in width in relation to the width of the volute causes a uniform flow density over the entire outlet cross section.
  • the reduced width of the outlet opening can be approximately the same over the entire length of the outlet nozzle, ie it can be the same across the entire cross section at the inlet of the outlet nozzle as at the outlet opening. But it is it is also conceivable to reduce the width at the inlet of the outlet from the outside to the inside of the spiral continuously or in steps.
  • the guide vanes can thicken in the direction of flow and they can be bluntly cut in the plane of the outlet opening. This reduces the degree of deceleration of the flow. With a connected diffuser, the entire width of the volute casing could then be further decelerated.
  • Favorable length / width ratios at the outlet opening can be achieved if the spiral curvature of the housing wall extends over an angle of less than 270 °, preferably 220 ° to 240 °.
  • the length of the outlet opening can even be greater than the maximum diameter on the housing.
  • the device shown in FIG. 1 essentially consists of a housing 2 which is approximately rectangular in cross section and preferably provided with a heat-insulating layer.
  • a material web 1 is guided through the housing by suitable guiding or conveying means 3, for example by means of a tensioning frame.
  • suitable guiding or conveying means 3 for example by means of a tensioning frame.
  • nozzle boxes 4, 4 ' are arranged on both sides of the web 1 in the direction of transport, a gap for the outflow of the exhaust air remaining between the individual nozzle boxes.
  • the nozzle boxes are provided with nozzle openings 5 directed towards the web 1.
  • the circulating air U enters the nozzle boxes via inlet openings 6, 6 ', the cross section of the nozzle boxes tapering analogously to the amount of air required.
  • a blower 7 is suspended under a ceiling wall 16.
  • the drive device 11 for the blower is arranged above the ceiling wall 16, a suitable gear being able to be interposed if necessary.
  • a pressure chamber 14 is separated with the aid of a partition wall 25, the remaining space forming a return flow chamber 15 which on the one hand surrounds the individual nozzle boxes 4, 4' and which on the other hand is located on the suction side 13 of the fan 7 connects.
  • the two inlet openings 6 and 6 ' can be closed with bypass flaps 18, 18' which can be pivoted in the same direction.
  • these two bypass flaps are fully open, so that both nozzle boxes 4, 4 'receive the maximum possible amount of air.
  • Below the lower one Inlet opening 6 ' has a lower partition 26 in which a bypass opening 19 is provided.
  • This bypass opening lies in the pivoting range of the lower bypass flap 18 ', so that it can be closed by it. In this way, the circulating air U can only reach the return flow space 15 after the material web 1 has been loaded.
  • a flap 17 is articulated between the upper and lower inlet openings 6 and 6 ', with the aid of which the amount of air to the individual nozzle boxes 4 and 4' can be controlled. In the extreme end position, one of the two nozzle boxes can be completely disconnected from the circulating air.
  • a radiator arrangement extends obliquely from the upper left corner of the housing 2 to the upper inlet opening 6 and can be connected via a line to a heating medium source (not shown). It can be hot steam or hot oil.
  • a sieve 21 is arranged under the fan 7 on the suction side 13, in which fluff and other impurities are retained and which can be changed from outside during operation.
  • an exhaust air duct 22 is arranged in the return flow space 15 and extends through the housing parallel to the transport direction. This channel is penetrated by transverse pipelines which are open through the housing wall towards the outside or against the backflow space 15. As can be seen in particular from FIG. 3, the channel 22 can extend over a whole line of several devices connected in series. A portion of the recirculated air U is sucked in as exhaust air A by an exhaust air blower 23 and must accordingly be replaced by fresh air F. The cold fresh air F penetrates through the pipes 24 and heats up in the process the hot exhaust air A. This heat recovery leads to a significant improvement in the heat balance.
  • the device in the exemplary embodiment according to FIG. 2 has the same structure as shown in FIG. 1.
  • a gas burner 9 is arranged on the ceiling wall 16, the burner fan 10 and possibly further control parts are attached to the ceiling wall 16.
  • the exhaust air duct 22 is not penetrated by pipelines 24 here, but rather is closed.
  • the two bypass flaps 18 and 18 ' are completely closed, the bypass opening 19 being opened.
  • the circulating air U circulates only between the pressure chamber 14 and the backflow chamber 15, but without admitting the web 1.
  • Such an operating position is required, for example, when the material web 1 is at a standstill, in order to prevent damage from increased heat.
  • the line according to FIG. 3 consists of individual units, each with six nozzle boxes 4, 4 'on both sides of the web 1. Each unit has two blowers 7. Of course, any other combinations can be chosen without this would leave the subject of the invention.
  • FIG. 4 shows, somewhat simplified, a radial fan 7, consisting of an approximately spiral-shaped fan housing 30 in which a rotor 29 is arranged.
  • the rotor rotates about a rotor axis 32, air being sucked in at the suction opening 35.
  • a blow-out connector 33 connects to the fan housing 30.
  • This outlet nozzle opens into an outlet opening 31, the length L of which is greater than the maximum radius Rmax.
  • Guide vanes 34 are arranged in the outlet port 33 and distribute the flow evenly.
  • the width BA at the outlet opening 31 is smaller than the width BG at the spiral housing 30. This width is already reduced at the inlet cross-section 36 of the outlet nozzle, where the width can be reduced even further from the larger radius Rmax to the smaller radius Rmin.
  • the spiral housing 30 extends from its minimum radius Rmin to its maximum radius Rmax only over an angle ⁇ of approximately 220 ° to 240 °.
  • the outlet spout 33 extends approximately tangentially to the outer wall of the housing 30.
  • the outlet spout at the smaller radius Rmin extends in an arc to the length L of the outlet opening 31.
  • the guide vanes 34 are adapted to the curvature of this arc.
  • blow-out connector 33 has a reduced width BA compared to the width BG on the volute casing, namely here evenly up to the outlet opening 31.
  • the length L of the outlet opening 31 is greater than that maximum diameter Dmax on the spiral casing 30.
  • a normal 360 ° spiral 37 is indicated by the dash-dotted lines. From this it can be seen that the shortening of the spiral practically leads to an outlet opening 31 rotated by 90 °.
  • the guide vanes 34 are thickened in cross-section towards the outlet opening 31 in this exemplary embodiment.
  • the guide vanes are bluntly cut in the plane of the outlet opening.
  • the end sections of the guide vanes all run approximately parallel in the plane of the outlet opening and at right angles to the outlet opening.
  • the guide vane closest to the smaller radius Rmin is relatively strongly curved, while the guide vane closest to the larger radius Rmax is almost stretched.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
EP94810571A 1993-10-15 1994-09-30 Installation de traitement thermique d'une bande en déplacement continu, en particulier une bande textile Revoked EP0648882B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH312293 1993-10-15
CH3122/93 1993-10-15
CH323193 1993-10-27
CH3231/93 1993-10-27

Publications (2)

Publication Number Publication Date
EP0648882A1 true EP0648882A1 (fr) 1995-04-19
EP0648882B1 EP0648882B1 (fr) 1997-11-26

Family

ID=25692238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810571A Revoked EP0648882B1 (fr) 1993-10-15 1994-09-30 Installation de traitement thermique d'une bande en déplacement continu, en particulier une bande textile

Country Status (6)

Country Link
US (1) US5564200A (fr)
EP (1) EP0648882B1 (fr)
JP (1) JPH07167561A (fr)
AT (1) ATE160599T1 (fr)
DE (1) DE59404669D1 (fr)
ES (1) ES2109649T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10010842A1 (de) * 2000-03-06 2001-09-20 Brueckner Trockentechnik Gmbh Vorrichtung zur Behandlung von Warenbahnen
FR2826851A1 (fr) * 2001-07-03 2003-01-10 Nielsen Innovation Aspirateur autonome a efficacite elevee

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI971899A (fi) * 1997-05-02 1998-11-03 Sunds Defibrator Panelhandling Menetelmä ja laitteisto levymäisen materiaalin käsittelemiseksi kaasum aisella aineella
US6131308A (en) * 1999-09-10 2000-10-17 Ingenieurgemeinschaft Wsp, Prof. Dr.-Ing C Kramer, Prof. Dipl.-Ing H.J. Gerhardt M.S. Apparatus for levitational guidance of web material
EP1351030A1 (fr) * 2002-04-02 2003-10-08 Solipat Ag Dispositif et procédé de consolidation d'un composite en fibres
KR101276844B1 (ko) * 2007-02-16 2013-06-24 엘지전자 주식회사 의류건조기
US8429831B2 (en) 2009-09-04 2013-04-30 Abbott Cardiovascular Systems Inc. Drug-eluting coatings applied to medical devices by spraying and drying to remove solvent
ITFI20110076A1 (it) * 2011-04-19 2012-10-20 Unitech Textile Machinery S P A "macchina per il trattamento di tessuti con recupero di calore"
KR101548652B1 (ko) 2015-07-10 2015-08-31 주식회사 아이에스더블유 섬유 건조 및 셋팅기용 열풍 공급구조체
DE202015106039U1 (de) * 2015-11-10 2017-02-13 Autefa Solutions Germany Gmbh Behandlungseinrichtung
DE102018002107A1 (de) * 2018-03-15 2019-09-19 Grenzebach Bsh Gmbh Verfahren und Vorrichtung zum Trocknen von Gipsplatten
JP7241576B2 (ja) * 2019-03-13 2023-03-17 株式会社Ｓｃｒｅｅｎホールディングス ウェブ乾燥装置およびウェブ乾燥方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013034B (de) * 1955-12-24 1957-08-01 Paul Pollrich & Comp Austrittsgehaeuse fuer Radialgeblaese
DE2143774A1 (de) * 1971-09-01 1973-03-08 Brueckner Trockentechnik Kg Vorrichtung zur behandlung einer textilbahn
EP0177723A1 (fr) * 1984-09-04 1986-04-16 Siemens Aktiengesellschaft Ventilateur radial
EP0471162A1 (fr) * 1990-08-17 1992-02-19 A. Monforts GmbH & Co Dispositif de séchage et/ou de fixation à convection

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE255201C (fr) * 1909-12-09
FR1590289A (fr) * 1967-11-02 1970-04-13
US3568331A (en) * 1969-01-08 1971-03-09 Greenbank Eng Co Ltd Suction drying apparatus
US4586268A (en) * 1982-02-19 1986-05-06 Vepa Aktiengesellschaft Heat treatment tunnel
DE3627904A1 (de) * 1986-08-16 1988-02-18 Monforts Gmbh & Co A Konvektionstrocken- und/oder -fixiermaschine
US5303484A (en) * 1992-04-09 1994-04-19 Thermo Electron Web Systems, Inc. Compact convective web dryer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013034B (de) * 1955-12-24 1957-08-01 Paul Pollrich & Comp Austrittsgehaeuse fuer Radialgeblaese
DE2143774A1 (de) * 1971-09-01 1973-03-08 Brueckner Trockentechnik Kg Vorrichtung zur behandlung einer textilbahn
EP0177723A1 (fr) * 1984-09-04 1986-04-16 Siemens Aktiengesellschaft Ventilateur radial
EP0471162A1 (fr) * 1990-08-17 1992-02-19 A. Monforts GmbH & Co Dispositif de séchage et/ou de fixation à convection

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10010842A1 (de) * 2000-03-06 2001-09-20 Brueckner Trockentechnik Gmbh Vorrichtung zur Behandlung von Warenbahnen
DE10010842B4 (de) * 2000-03-06 2009-10-01 Brückner Trockentechnik GmbH & Co. KG Vorrichtung zur Behandlung von Warenbahnen
FR2826851A1 (fr) * 2001-07-03 2003-01-10 Nielsen Innovation Aspirateur autonome a efficacite elevee
WO2003003896A1 (fr) * 2001-07-03 2003-01-16 Nielsen Innovation Aspirateur autonome a efficacite elevee
US7356873B2 (en) 2001-07-03 2008-04-15 Nielsen Innovation Highly efficient autonomous vacuum cleaner

Also Published As

Publication number Publication date
DE59404669D1 (de) 1998-01-08
EP0648882B1 (fr) 1997-11-26
ES2109649T3 (es) 1998-01-16
US5564200A (en) 1996-10-15
ATE160599T1 (de) 1997-12-15
JPH07167561A (ja) 1995-07-04

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