EP1788143B1 - Device for ironing flatwork laundry - Google Patents

Device for ironing flatwork laundry Download PDF

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Publication number
EP1788143B1
EP1788143B1 EP06123513A EP06123513A EP1788143B1 EP 1788143 B1 EP1788143 B1 EP 1788143B1 EP 06123513 A EP06123513 A EP 06123513A EP 06123513 A EP06123513 A EP 06123513A EP 1788143 B1 EP1788143 B1 EP 1788143B1
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EP
European Patent Office
Prior art keywords
exhaust air
rollers
roller
pipe
line
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EP06123513A
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German (de)
French (fr)
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EP1788143A1 (en
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Joachim Krause
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Individual
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F65/00—Ironing machines with rollers rotating against curved surfaces
    • D06F65/10—Ironing machines with rollers rotating against curved surfaces with two or more rollers co-operating with two or more curved surfaces
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F67/00—Details of ironing machines provided for in groups D06F61/00, D06F63/00, or D06F65/00

Definitions

  • the invention relates to a device for mangling flat laundry tracks according to the preamble of patent claim 1.
  • Such devices are for example off DE 9 112 647 U1 or DE 3 209 365 A1 known.
  • Devices for ironing bed linen Tablecloths, etc. also commonly known as Lack Non, have at least two, but preferably three or more successively arranged mangle rolls, which are provided over a certain angle of their circumference with a heating device.
  • the heating devices transfer heat from a trough-shaped metal surface in the direction of the respective roller and thus on the passing between the roller and heating device cloth.
  • several Handruchrollen are mounted side by side on the input side, such that a plurality of sheets of towel rolls in parallel, that are simultaneously inserted into the device and subjected to the treatment. Such towel rolls have been subjected to a washing operation prior to their attachment to the device.
  • a plurality of webs or fabric webs of the relevant towel rolls are processed simultaneously.
  • the rollers are arranged within a trough, wherein the trough is closable by means of a cover.
  • a suction device is provided on each roller, which sucks air from the interior of the respective roller and leads to an exhaust manifold, after which the exhaust air is discharged from the roller.
  • Each roller in conjunction with the associated heating device causes a smoothing of the fabric webs carried out and in addition a drainage or dehumidification of the towels to be ironed in Direction towards the exit of the fabric webs to be ironed on the output side of the device.
  • the invention has for its object to improve a device of the type mentioned in such a way that the energy used for drying and mangling is reduced and an increase in performance is achieved.
  • the invention provides a device for ironing or towel rolls or similar towels, in which an additional exhaust duct is provided, which is connected to the last roller to suck the exhaust air in the cavity of the last roll to these largely dehumidified and at a high Temperature level located exhaust air back into the device. In this way, the temperature within the device is brought to a predetermined high temperature level.
  • the air in the last roll is lowest in moisture content and highest in temperature. This fact is exploited according to the invention by the air sucked from the last roller is returned to the device and is preferably blown from above onto the rollers. In this way, dry and heated air is introduced into the space receiving the rollers, so that the efficiency of the individual heating devices is improved.
  • the rotational speed of the ironing rollers can be increased because the removal of moisture associated with the mangling of the individual rollers is carried out at a higher efficiency as a result of the recycling
  • Dehumidified and high temperature exhaust air ie the entire drying process is not only accelerated, but there is also a power saving.
  • a throttle device is provided in front of the exhaust port of the exhaust duct to control or regulate the amount of air that is returned to the space receiving the rollers. Excess exhaust air is fed via a bypass line in the exhaust pipe.
  • the roller receiving the trough is provided with a device for leveling with respect to the cover, this device preferably consists of insulated elements made of V2A steel.
  • Fig. 1 schematically shows a known device for mangling or ironing cloth webs, which are used as towel rolls or the like be attached to the front of the device.
  • Fig. 1 are within a tub 1 more rollers 2, 3, 4 are provided.
  • a total of three rollers are arranged substantially parallel and behind one another. 5
  • the input side for the moist shortage is called at the several towel rolls are provided side by side.
  • 6 indicates the output side for the ironed and dried mangled goods, ie the processing direction is in Fig. 1 from right to left.
  • Each roller 2, 3, 4 is provided with a trough-shaped heating device, also called trough, which in Fig. 1 with 8, 9, 10 is designated.
  • Each roller 2, 3, 4 preferably consists of a perforated steel cylinder with a spring winding arranged thereon. On the spring winding is a Textilbewicklung which absorbs moisture due to the guided through the device fabric webs.
  • each roller suction forming a suction unit 12, 13, 14 are provided which suck air from the roll cavity and an exhaust pipe 16, which from the tub 1, with a cover 18 is provided, is led out to discharge the exhaust air to the outside.
  • each of each roller 2, 3, 4 extracted exhaust air is led away via a common exhaust pipe 16 from the device.
  • Fig. 2 shows a device according to the present invention. Same parts opposite Fig. 1 are provided with the same reference numerals.
  • a device with a total of three rollers 2, 3, 4 is shown.
  • the number of rolls 2, 3, 4 can be reduced to at least two and increased to a higher number of rolls.
  • the in conjunction with Fig. 2 used three rollers 2, 3, 4 are therefore to be regarded as a preferred embodiment.
  • the device has an exhaust pipe 16, which is fed via suction units 12 and 13, while different for the last and third roll 4 to Fig. 1 a suction fan 19 is provided, which extracts the exhaust air from the roller 4 and from the cavity of the roller 4 and via a separate exhaust duct 20, a throttle device 22, preferably in the form of a throttle valve 22 and an exhaust port 24 in the device or in the Mangelstrasse returns.
  • the throttle device 22 serves to control the recirculated air in the roll chamber.
  • a bypass line 26 is provided which directs excess exhaust air into the exhaust pipe 16. It can be assumed that the fan 19 sucks more air than via the throttle device 22 and the exhaust port 24 is returned to the device.
  • trough-shaped heating devices 8, 9, 10 are provided, as described above. Such trough-shaped heating devices 8, 9, 10 are preferably heated by steam.
  • the extracted by the last roller 4 air is sucked through the cavity of the last roller 4 using the suction fan 19 and blown back into the device via the exhaust port 24 and returned.
  • the air is already mixed in the area of the first and second rollers with the recirculated or dehumidified and heated air.
  • the exhaust air recirculation increases the efficiency of the entire plant and results in a reduction of moisture in the textile winding of the rolls. This has the consequence that the optimum drying temperature per roll compared to the device after Fig. 1 is achieved faster and thereby compared to the device according to Fig. 1 not the entire distance of the respective trough-shaped heating devices must be exploited in order to drain the mangle.
  • Fig. 3 schematically shows a representation of a roller 2 with the heating device. 8
  • Fig. 4 schematically shows the temperature profile on a roller as a function of the path.
  • Fig. 1 is the starting temperature in Fig. 4 designated T ST1 . From this point the temperature rises from the path W to W 1 and at W 1 the optimum temperature T OPT is reached. With an exhaust air return according to the present invention, however, a temperature value T ST2 is already started, so that the distance between W 2 and W is considerably smaller than in the case of the device according to FIG Fig. 1 in which there is a temperature increase between the path W and W 1 . In other words, in the present invention, the temperature of the mangle good within a shorter distance W1, W 2 brought to the optimum value and thus also the dehumidifying effect achieved faster.
  • the temperature of the exhaust air recirculated through the exhaust port 24 is about 120 ° C.
  • the heating trough is typically steam heated at 8 to 16 bar.
  • the roller contact pressure between roller and heating device 8, 9, 10 is between 3 to 6 bar.
  • the working width of each roller is between 2 and 4 meters, with a roller diameter of between 0.6 and 1.6 meters.
  • the present invention is compared to the device according to Fig. 1 at the top of the tub 1 make an increase to the blowing of the exhaust air through the exhaust duct 20 and the exhaust port 24 and the installation of the exhaust duct 20th to enable. It is advantageous if the recirculated exhaust air is passed via the exhaust opening 24 to the top of the rollers 2, 3, 4, as is apparent from Fig. 2 results.
  • the tub 1 is provided with a height-increasing intermediate unit 30, on which the cover 18 is placed.
  • This intermediate unit 30 is preferably made of stainless steel elements which form an attachable frame, are insulated and have light windows on the right and left in the running direction of the deficiency street.
  • strips 21, 23 of soft, transparent plastic are attached according to the invention, which largely prevent leakage of exhaust air from the space receiving the rollers 2, 3, 4.
  • the temperature is substantially increased by blowing the heated and largely dehumidified exhaust air into the air space above the rollers 2, 3, 4.
  • This has the consequence that the rollers with respect to their surface on the ventilation section, ie after the exit from the trough-shaped heating device, until re-immersion in the trough-shaped heating device only slightly cool and also improves the higher temperature in the upper space of the rollers 2, 3rd , 4 the evaporation of the stored in the Textilbewicklung the rollers 2, 3, 4 water.
  • the Textilbewicklung the rollers 2, 3, 4 also in comparison to the device according to Fig.
  • the rollers 2, 3, 4 have significantly higher temperatures, whereby the heating time of Textilbewicklung the rollers 2, 3, 4 during the passage through the trough-shaped heating device 8, 9, 10 is shortened, and thus the rollers 2, 3, 4 can be driven at a higher speed. With the same energy use, a higher performance of the overall device is achieved. In a typical embodiment, the speed of 25 meters / min. at 31 meters / min. increase.
  • the invention can also be applied to existing devices of this type Fig. 1 retrofit.
  • a sensor 32 is provided for measuring the temperature or humidity within the tub 5, wherein the sensor is connected to a microcomputer 34. Furthermore, the throttle device 22 is connected to a microcomputer 34 as well as the exhaust fan 19. This allows depending on the measured temperature or humidity by the sensor 32 control of the recirculated exhaust air, as well as a control of the fan 19, possibly also a controller the speed of the individual rollers 2, 3, 4 by means of a speed control 45 connected to the computer 34. With such a scheme can thus adjust the speed of the rollers to the respective conditions.
  • the rollers 2, 3 and 4 are parallel and behind one another, preferably at the same level, provided.
  • the exhaust duct 16 is preferably fed to a heat exchanger 40 having a secondary circuit lines 41, 42 for a leaching duct.
  • the heated exhaust air is used for heat recovery and heating of wash liquor, which is fed to a separate wash cycle.
  • Fig. 1 and Fig. 2 Furthermore, the trough-shaped depressions of the heating device 8, 9, 4 via corresponding vertex sections 44, 45 (FIG. Fig. 2 ), so that the troughs 8, 9, 10 and the apexes 44, 45 serve overall as an approximately S-shaped or sinusoidal guide for the passage of the fabric webs or fall laundry webs.
  • the forming the heating device trough itself has accordingly Fig. 3 a course corresponding to an angle ⁇ along the surface of the respective rollers 2, 3, 4, wherein the angle ⁇ is about 180 °.
  • the troughs 8, 9, 10 and vertex sections 44, 45 preferably consist of a correspondingly pressed guide track made of stainless steel.

Abstract

An arrangement for wringing out towelling material comprises two rollers (2,3,4) arranged in parallel and behind one another in a bath (1), a suction unit (12,13,14), and a ventilation pipe (16) connected to it. Each roller has an associated trough shaped heating unit (8,9,10) over a section of its circumference. The last roller has a ventilation line (20) which is connected to an inlet pipe via a throttling unit, and to the ventilation pipe via a bypass line. The inlet pipe feeds air from the last roller back to the chamber. The ventilation line is arranged axially to the side of the last roller.

Description

Die Erfindung betrifft eine Vorrichtung zum Mangeln von Flachwäschebahnen gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for mangling flat laundry tracks according to the preamble of patent claim 1.

Solche Vorrichtungen sind beispielsweise aus DE 9 112 647 U1 oder DE 3 209 365 A1 bekannt.Such devices are for example off DE 9 112 647 U1 or DE 3 209 365 A1 known.

Vorrichtungen zum Mangeln bzw. Bügeln von Bettwäsche Tischdecken Rollen usw., allgemein auch als Mangelstrassen bekannt, weisen mindestens zwei, vorzugsweise jedoch drei oder mehr hintereinander angeordnete Mangelwalzen auf, die über einen bestimmten Winkel ihres Umfanges mit einer Beheizungseinrichtung versehen sind. Die Beheizungseinrichtungen übertragen Wärme von einer muldenförmig verlaufenden Metalloberfläche in Richtung auf die jeweilige Walze und somit auf das zwischen Walze und Beheizungseinrichtung durchlaufende Tuch. Bei einer derartigen Vorrichtung werden auf der Eingangsseite mehrere Handruchrollen nebeneinander montiert, derart, dass mehrere Bahnen von Handtuchrollen parallel, d.h. gleichzeitig in die Vorrichtung eingelegt werden und der Behandlung unterworfen werden. Derartige Handtuchrollen sind vor ihrer Anbringung an der Vorrichtung einem Waschvorgang ausgesetzt worden. Mit einer derartigen Vorrichtung werden daher mehrere Bahnen bzw. Tuchbahnen der betreffenden Handtuchrollen gleichzeitig bearbeitet. Die Walzen sind innerhalb einer Wanne angeordnet, wobei die Wanne mittels einer Abdeckhaube schließbar ist. Bei einer derartigen Vorrichtung ist an jeder Walze eine Absaugeinrichtung vorhanden, welche Luft aus dem Inneren der jeweiligen Walze absaugt und zu einem Abluftsammelrohr leitet, wonach die Abluft aus der Walze abgeleitet wird. Jede Walze in Verbindung mit der zugehörigen Beheizungseinrichtung bewirkt ein Glätten der durchgeführten Tuchbahnen und zusätzlich auch eine Entwässerung bzw. Entfeuchtung der zu bügelnden Tücher in Richtung hin zum Austritt der zu bügelnden Tuchbahnen ausgangsseitig der Vorrichtung.Devices for ironing bed linen Tablecloths, etc., also commonly known as Lackstraßen, have at least two, but preferably three or more successively arranged mangle rolls, which are provided over a certain angle of their circumference with a heating device. The heating devices transfer heat from a trough-shaped metal surface in the direction of the respective roller and thus on the passing between the roller and heating device cloth. In such a device, several Handruchrollen are mounted side by side on the input side, such that a plurality of sheets of towel rolls in parallel, that are simultaneously inserted into the device and subjected to the treatment. Such towel rolls have been subjected to a washing operation prior to their attachment to the device. With a device of this kind, therefore, a plurality of webs or fabric webs of the relevant towel rolls are processed simultaneously. The rollers are arranged within a trough, wherein the trough is closable by means of a cover. In such a device, a suction device is provided on each roller, which sucks air from the interior of the respective roller and leads to an exhaust manifold, after which the exhaust air is discharged from the roller. Each roller in conjunction with the associated heating device causes a smoothing of the fabric webs carried out and in addition a drainage or dehumidification of the towels to be ironed in Direction towards the exit of the fabric webs to be ironed on the output side of the device.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art derart zu verbessern, dass die zum Trocknen und Mangeln verwendete Energie reduziert wird und eine Leistungssteigerung erreicht wird.The invention has for its object to improve a device of the type mentioned in such a way that the energy used for drying and mangling is reduced and an increase in performance is achieved.

Diese Aufgabe wird erfindungsgemäß durch die im Patentanspruch 1 angegebenen Merkmale gelöst. Weitere Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by the features specified in claim 1. Further embodiments of the invention will become apparent from the dependent claims.

Die Erfindung schafft eine Vorrichtung zum Bügeln bzw. Mangeln von Handtuchrollen oder ähnlichen Tüchern, bei der eine zusätzliche Abluftleitung vorgesehen ist, die mit der letzten Walze verbunden ist, um die Abluft im Hohlraum der letzten Walze abzusaugen, um diese weitgehend entfeuchtete und auf einem hohen Temperaturniveau befindliche Abluft in die Vorrichtung zurückzuführen. Auf diese Weise wird die Temperatur innerhalb der Vorrichtung auf ein vorbestimmtes hohes Temperaturniveau gebracht. Bei einer Anordnung mehrerer Walzen ist die Luft in bzw. an der letzten Walze hinsichtlich des Feuchtigkeitsgehalts am niedrigsten und hinsichtlich der Temperatur am höchsten. Diese Tatsache wird erfindungsgemäß ausgenutzt, indem die von der letzten Walze abgesaugte Luft in die Vorrichtung zurückgeführt wird und vorzugsweise von oben auf die Walzen ausgeblasen wird. Auf diese Weise wird in den die Walzen aufnehmenden Raum trockene und aufgeheizte Luft eingeführt, so dass der Wirkungsgrad der einzelnen Beheizungseinrichtungen verbessert wird. Damit lässt sich die Drehzahl der Bügelwalzen erhöhen, weil die mit dem Mangeln an den einzelnen Walzen verbundene Entziehung von Feuchtigkeit mit einem höheren Wirkungsgrad ausgeführt wird als Folge der Rückführung entfeuchteter und auf hoher Temperatur befindlicher Abluft, d.h. der gesamte Trocknungsvorgang wird nicht nur beschleunigt, sondern es erfolgt auch eine Leistungseinsparung. Zum Erreichen einer optimalen Abluftrückführung von entfeuchteter und erhitzter Luft ist vor der Ausblasöffnung der Abluftleitung eine Drosseleinrichtung vorgesehen, um die Luftmenge, die in den die Walzen aufnehmenden Raum zurückgeführt wird, zu steuern oder zu regeln. Überschüssige Abluft wird über eine Bypass-Leitung in das Abluftrohr geleitet.The invention provides a device for ironing or towel rolls or similar towels, in which an additional exhaust duct is provided, which is connected to the last roller to suck the exhaust air in the cavity of the last roll to these largely dehumidified and at a high Temperature level located exhaust air back into the device. In this way, the temperature within the device is brought to a predetermined high temperature level. In a multiple roll arrangement, the air in the last roll is lowest in moisture content and highest in temperature. This fact is exploited according to the invention by the air sucked from the last roller is returned to the device and is preferably blown from above onto the rollers. In this way, dry and heated air is introduced into the space receiving the rollers, so that the efficiency of the individual heating devices is improved. Thus, the rotational speed of the ironing rollers can be increased because the removal of moisture associated with the mangling of the individual rollers is carried out at a higher efficiency as a result of the recycling Dehumidified and high temperature exhaust air, ie the entire drying process is not only accelerated, but there is also a power saving. To achieve optimum exhaust air recirculation of dehumidified and heated air, a throttle device is provided in front of the exhaust port of the exhaust duct to control or regulate the amount of air that is returned to the space receiving the rollers. Excess exhaust air is fed via a bypass line in the exhaust pipe.

Zur Ermöglichung der Rückführung von entfeuchteter und erwärmter Abluft ist die die Walzen aufnehmende Mulde mit einer Einrichtung zum Höhenausgleich gegenüber der Abdeckung versehen, wobei diese Einrichtung vorzugsweise aus isolierten Elementen aus V2A-Stahl besteht.To enable the return of dehumidified and heated exhaust air, the roller receiving the trough is provided with a device for leveling with respect to the cover, this device preferably consists of insulated elements made of V2A steel.

Nachfolgend wird die Erfindung anhand der Zeichnungen zur Erläuterung weiterer Merkmale beschrieben. Es zeigen:

  • Fig. 1 eine schematische Darstellung einer bekannten Vorrichtung mit drei Walzen,
  • Fig. 2 eine schematische Darstellung der erfindungsgemäßen Vorrichtung, und
  • Fig. 3 eine schematische Darstellung einer Walze mit zugehöriger muldenförmiger Beheizungseinrichtung, und
  • Fig. 4 eine graphische Darstellung zur Erläuterung der Erfindung.
The invention will be described with reference to the drawings to explain further features. Show it:
  • Fig. 1 a schematic representation of a known device with three rollers,
  • Fig. 2 a schematic representation of the device according to the invention, and
  • Fig. 3 a schematic representation of a roller with associated trough-shaped heating device, and
  • Fig. 4 a diagram for explaining the invention.

Fig. 1 zeigt schematisch eine bekannte Vorrichtung zum Mangeln bzw. Bügeln von Tuchbahnen, die als Handtuchrollen oder dergleichen an der Vorderseite der Vorrichtung angesetzt werden. Gemäß Fig. 1 sind innerhalb einer Wanne 1 mehrere Walzen 2, 3, 4 vorgesehen. Bei der dargestellten Ausführungsform sind insgesamt drei Walzen im Wesentlichen parallel und hintereinander angeordnet. Mit 5 ist die Eingangsseite für das feuchte Mangelgut bezeichnet, an der mehrere Handtuchrollen nebeneinander vorgesehen werden. Mit 6 ist die Ausgabeseite für das gebügelte und getrocknete Mangelgut angegeben, d.h. die Bearbeitungsrichtung ist in Fig. 1 von rechts nach links. Jede Walze 2, 3, 4 ist mit einer muldenförmigen Beheizungseinrichtung, auch Mulde genannt, versehen, die in Fig. 1 mit 8, 9, 10 bezeichnet ist. Durch jede muldenförmige Beheizungseinrichtung 8, 9, 10 wird ein Durchgang für das zu mangelnde Gut bzw. die Flachwäschebahnen gegenüber der zugehörigen Walze 2, 3, 4 festgelegt. Durch diesen Durchgang wird die zu bügelnde und zu entfeuchtende Tuchbahn bzw Flachwäschebahn hindurchgeführt. Jede Walze 2, 3, 4 besteht vorzugsweise aus einem gelochten Stahlzylinder mit einer darauf angeordneten Federbewicklung. Auf der Federbewicklung befindet sich eine Textilbewicklung, die in Folge des durch die Vorrichtung hindurchgeführten Tuchbahnen die Feuchtigkeit aufnimmt. Fig. 1 schematically shows a known device for mangling or ironing cloth webs, which are used as towel rolls or the like be attached to the front of the device. According to Fig. 1 are within a tub 1 more rollers 2, 3, 4 are provided. In the illustrated embodiment, a total of three rollers are arranged substantially parallel and behind one another. 5, the input side for the moist shortage is called at the several towel rolls are provided side by side. 6 indicates the output side for the ironed and dried mangled goods, ie the processing direction is in Fig. 1 from right to left. Each roller 2, 3, 4 is provided with a trough-shaped heating device, also called trough, which in Fig. 1 with 8, 9, 10 is designated. Through each trough-shaped heating device 8, 9, 10, a passage for the good to be lacked or the flat laundry tracks relative to the associated roller 2, 3, 4 set. Through this passage, the to be ironed and dehumidified cloth web or flat laundry path is passed. Each roller 2, 3, 4 preferably consists of a perforated steel cylinder with a spring winding arranged thereon. On the spring winding is a Textilbewicklung which absorbs moisture due to the guided through the device fabric webs.

Wie sich Fig. 1 entnehmen lässt, sind axial zu jeder Walze 2, 3, 4 und seitlich jeder Walze eine Absaugeinrichtung bildende Absaugeinheiten 12, 13, 14 vorgesehen, die aus dem Walzenhohlraum Luft absaugen und einem Abluftrohr 16 zuführen, welches aus der Wanne 1, die mit einer Abdeckung 18 versehen ist, zur Abgabe der Abluft nach außen herausgeführt ist. Bei der bekannten Vorrichtung wird die jeweils von jeder Walze 2, 3, 4 abgesaugte Abluft über ein gemeinsames Abluftrohr 16 aus der Vorrichtung weggeführt.Like yourself Fig. 1 can be removed, axially to each roller 2, 3, 4 and laterally each roller suction forming a suction unit 12, 13, 14 are provided which suck air from the roll cavity and an exhaust pipe 16, which from the tub 1, with a cover 18 is provided, is led out to discharge the exhaust air to the outside. In the known device, each of each roller 2, 3, 4 extracted exhaust air is led away via a common exhaust pipe 16 from the device.

Fig. 2 zeigt eine Vorrichtung gemäß vorliegender Erfindung. Gleiche Teile gegenüber Fig. 1 sind mit gleichen Bezugszeichen versehen. In Fig. 2 ist eine Vorrichtung mit insgesamt drei Walzen 2, 3, 4 dargestellt. Die Zahl der Walzen 2, 3, 4 kann auf mindestens zwei reduziert und auf eine höhere Zahl von Walzen erhöht werden. Die in Verbindung mit Fig. 2 verwendeten drei Walzen 2, 3, 4 sind daher nur als bevorzugte Ausführungsform anzusehen. Fig. 2 shows a device according to the present invention. Same parts opposite Fig. 1 are provided with the same reference numerals. In Fig. 2 a device with a total of three rollers 2, 3, 4 is shown. The number of rolls 2, 3, 4 can be reduced to at least two and increased to a higher number of rolls. The in conjunction with Fig. 2 used three rollers 2, 3, 4 are therefore to be regarded as a preferred embodiment.

Entsprechend Fig. 1 weist die Vorrichtung ein Abluftrohr 16 auf, welches über Absaugeinheiten 12 und 13 gespeist wird, während für die letzte und dritte Walze 4 unterschiedlich zu Fig. 1 ein Absauggebläse 19 vorgesehen ist, welches die Abluft aus der Walze 4 bzw. aus dem Hohlraum der Walze 4 abzieht und über eine separate Abluftleitung 20, eine Drosseleinrichtung 22, vorzugsweise in Form einer Drosselklappe 22 und eine Ausblasöffnung 24 in die Vorrichtung bzw. in die Mangelstrasse zurückführt. Die Drosseleinrichtung 22 dient dabei der Steuerung der in den Walzenraum zurückgeführten Abluft.Corresponding Fig. 1 the device has an exhaust pipe 16, which is fed via suction units 12 and 13, while different for the last and third roll 4 to Fig. 1 a suction fan 19 is provided, which extracts the exhaust air from the roller 4 and from the cavity of the roller 4 and via a separate exhaust duct 20, a throttle device 22, preferably in the form of a throttle valve 22 and an exhaust port 24 in the device or in the Mangelstrasse returns. The throttle device 22 serves to control the recirculated air in the roll chamber.

Weiterhin ist eine Bypass-Leitung 26 vorgesehen, welche überschüssige Abluft in das Abluftrohr 16 leitet. Hierbei ist davon auszugehen, dass das Gebläse 19 mehr Luft absaugt als über die Drosseleinrichtung 22 und die Ausblasöffnung 24 in die Vorrichtung zurückgeführt wird. Bei der Vorrichtung nach Fig. 2 sind für jede Walze 2, 3, 4 muldenförmige Beheizungseinrichtungen 8, 9, 10 vorgesehen, wie dies vorstehend beschrieben ist. Derartige muldenförmige Beheizungseinrichtungen 8, 9, 10 werden vorzugsweise durch Dampf beheizt.Furthermore, a bypass line 26 is provided which directs excess exhaust air into the exhaust pipe 16. It can be assumed that the fan 19 sucks more air than via the throttle device 22 and the exhaust port 24 is returned to the device. In the device according to Fig. 2 For each roller 2, 3, 4 trough-shaped heating devices 8, 9, 10 are provided, as described above. Such trough-shaped heating devices 8, 9, 10 are preferably heated by steam.

Ersichtlicherweise dienen die muldenartigen Beheizungseinrichtungen 8, 9, 10, die von der ersten bis zur letzten Walze vorgesehen sind, gleichzeitig der Führung der zu trocknenden bzw. zu bügelnden Tuchbahnen.Evidently, the trough-like heating devices 8, 9, 10, which are provided from the first to the last roller, serve are, at the same time the leadership of the drying or to be ironed cloth webs.

Bei der erfindungsgemäßen Vorrichtung ist somit eine Rückführung von entfeuchteter und erhitzter Abluft vorgesehen und zwar ausschließlich von der letzten bzw. dritten Walze 4. Ersichtlicherweise wird ein von der Zuführungsseite 5 zugeführtes feuchtes Tuch bzw. feuchte Flachwäschebahn im Laufe der Weiterführung zu den nächsten Walzen mehr und mehr entfeuchtet, in Folge dessen an der letzten Walze 4 Luft mit einem vergleichbar niedrigen Feuchtigkeitsgehalt und mit vergleichbar hoher Temperatur vorliegt, während an der ersten bzw. vordersten Walze der auf die Walze übertragene Feuchtigkeitsgehalt am höchsten ist, mithin die dort in das Abluftrohr 16 geführte Abluft einen vergleichbaren hohen Feuchtigkeitsgehalt besitzt.In the apparatus according to the invention thus a return of dehumidified and heated exhaust air is provided exclusively from the last or third roller 4. It can be seen that a supplied from the feed side 5 wet cloth or wet flat laundry in the course of continuation to the next more and more dehumidified, as a result of the last roll 4 air with a comparatively low moisture content and at a comparatively high temperature is present, while at the first or foremost roll of the moisture content transferred to the roller is highest, hence the guided there in the exhaust pipe 16 Exhaust air has a comparable high moisture content.

Die von der letzten Walze 4 abgesaugte Luft wird über den Hohlraum der letzten Walze 4 mithilfe des Absauggebläses 19 abgesaugt und in die Vorrichtung über die Ausblasöffnung 24 wieder eingeblasen bzw. zurückgeführt. Als Folge dieser Abluftrückführung wird die Luft bereits im Bereich der ersten und zweiten Walze mit der zurückgeführten bzw. entfeuchteten und erhitzten Luft vermischt. Durch die Abluftrückführung wird die Effizienz der gesamten Anlage erhöht und es ergibt sich eine Feuchtigkeitsreduzierung in der Textilbewicklung der Walzen. Dies hat zur Folge, dass die optimale Trockentemperatur pro Walze im Vergleich zur Vorrichtung nach Fig. 1 schneller erreicht wird und dadurch im Vergleich zur Vorrichtung nach Fig. 1 nicht die gesamte Strecke der jeweiligen muldenförmigen Beheizungseinrichtungen ausgenutzt werden muss, um das Mangelgut zu entwässern.The extracted by the last roller 4 air is sucked through the cavity of the last roller 4 using the suction fan 19 and blown back into the device via the exhaust port 24 and returned. As a result of this exhaust air recirculation, the air is already mixed in the area of the first and second rollers with the recirculated or dehumidified and heated air. The exhaust air recirculation increases the efficiency of the entire plant and results in a reduction of moisture in the textile winding of the rolls. This has the consequence that the optimum drying temperature per roll compared to the device after Fig. 1 is achieved faster and thereby compared to the device according to Fig. 1 not the entire distance of the respective trough-shaped heating devices must be exploited in order to drain the mangle.

Fig. 3 zeigt schematisch eine Darstellung einer Walze 2 mit der Beheizungseinrichtung 8. Fig. 3 schematically shows a representation of a roller 2 with the heating device. 8

Fig. 4 zeigt schematisch den Temperaturverlauf an einer Walze in Abhängigkeit vom Weg. Fig. 4 schematically shows the temperature profile on a roller as a function of the path.

Für den Stand der Technik nach Fig. 1 ist die Starttemperatur in Fig. 4 mit TST1 bezeichnet. Von diesem Punkt steigt die Temperatur vom Weg W bis W1 und bei W1 wird die optimale Temperatur TOPT erreicht. Mit einer Abluftrückführung gemäß vorliegender Erfindung wird aber bereits bei einem Temperaturwert TST2 begonnen, so dass der Weg zwischen W2 und W erheblich kleiner ist als bei der Vorrichtung nach Fig. 1, bei welcher sich eine Temperaturerhöhung zwischen dem Weg W und W1 ergibt. Mit anderen Worten, bei vorliegender Erfindung wird die Temperatur des Mangelgutes innerhalb einer kürzeren Wegstrecke W1, W2 auf den optimalen Wert gebracht und damit auch der Entfeuchtungseffekt schneller erreicht. Hierdurch ergibt sich eine mögliche Erhöhung der Drehgeschwindigkeit der Walzen um etwa 20 bis 22 %, d.h. die Leistungsfähigkeit der Vorrichtung wird erheblich verbessert. Bei einer typischen Vorrichtung gemäß vorliegender Erfindung liegt die Temperatur der über die Ausblasöffnung 24 zurückgeführten Abluft bei etwa 120°C. Die Beheizungsmulde wird typischerweise mit 8 bis 16 bar dampfbeheizt. Der Walzen-Anpressdruck zwischen Walze und Beheizungseinrichtung 8, 9, 10 liegt zwischen 3 bis 6 bar. Die Arbeitsbreite jeder Walze liegt zwischen 2 und 4 Meter, wobei der Walzendurchmesser zwischen 0,6 und 1,6 Meter liegt.For the state of the art Fig. 1 is the starting temperature in Fig. 4 designated T ST1 . From this point the temperature rises from the path W to W 1 and at W 1 the optimum temperature T OPT is reached. With an exhaust air return according to the present invention, however, a temperature value T ST2 is already started, so that the distance between W 2 and W is considerably smaller than in the case of the device according to FIG Fig. 1 in which there is a temperature increase between the path W and W 1 . In other words, in the present invention, the temperature of the mangle good within a shorter distance W1, W 2 brought to the optimum value and thus also the dehumidifying effect achieved faster. This results in a possible increase in the rotational speed of the rollers by about 20 to 22%, ie the performance of the device is significantly improved. In a typical apparatus according to the present invention, the temperature of the exhaust air recirculated through the exhaust port 24 is about 120 ° C. The heating trough is typically steam heated at 8 to 16 bar. The roller contact pressure between roller and heating device 8, 9, 10 is between 3 to 6 bar. The working width of each roller is between 2 and 4 meters, with a roller diameter of between 0.6 and 1.6 meters.

Bei vorliegender Erfindung ist im Vergleich zur Vorrichtung nach Fig. 1 an der Oberseite der Wanne 1 eine Erhöhung vorzunehmen, um das Einblasen der Abluft über die Abluftleitung 20 und die Ausblasöffnung 24 und den Einbau der Abluftleitung 20 zu ermöglichen. Es ist vorteilhaft, wenn die rückgeführte Abluft über die Ausblasöffnung 24 zur Oberseite der Walzen 2, 3, 4 geleitet wird, wie sich dies aus Fig. 2 ergibt. Zur Realisierung vorliegender Erfindung ist im Vergleich zu Fig. 1 die Wanne 1 mit einer die Höhe vergrößernden Zwischeneinheit 30 versehen, auf welche die Abdeckung 18 aufgesetzt ist.In the present invention is compared to the device according to Fig. 1 at the top of the tub 1 make an increase to the blowing of the exhaust air through the exhaust duct 20 and the exhaust port 24 and the installation of the exhaust duct 20th to enable. It is advantageous if the recirculated exhaust air is passed via the exhaust opening 24 to the top of the rollers 2, 3, 4, as is apparent from Fig. 2 results. For the realization of the present invention is compared to Fig. 1 the tub 1 is provided with a height-increasing intermediate unit 30, on which the cover 18 is placed.

Diese Zwischeneinheit 30 besteht vorzugsweise aus Edelstahlelementen, die einen aufsetzbaren Rahmen bilden, isoliert sind und Lichtfenster rechts und links in Laufrichtung der Mangelstrasse aufweisen.This intermediate unit 30 is preferably made of stainless steel elements which form an attachable frame, are insulated and have light windows on the right and left in the running direction of the deficiency street.

An der Eingabeseite 5 und der Ausgabeseite 6 werden erfindungsgemäß vorzugsweise Streifen 21, 23 aus weichem, durchsichtigen Kunststoff angehängt, die einen Austritt von Abluft aus dem die Walzen 2, 3, 4 aufnehmenden Raum weitgehend verhindern.On the input side 5 and the output side 6, strips 21, 23 of soft, transparent plastic are attached according to the invention, which largely prevent leakage of exhaust air from the space receiving the rollers 2, 3, 4.

Gemäß der Erfindung wird durch das Einblasen der erwärmten und weitgehend entfeuchteten Abluft in den Luftraum über den Walzen 2, 3, 4 die Temperatur wesentlich erhöht. Dies hat zur Folge, dass sich die Walzen hinsichtlich ihrer Oberfläche auf der Belüftungsstrecke, d.h. nach dem Austritt aus der muldenförmigen Beheizungseinrichtung, bis zum Wiedereintauchen in die muldenförmige Beheizungseinrichtung nur noch geringfügig abkühlen und zudem verbessert die höhere Temperatur im oberen Raum der Walzen 2, 3, 4 die Verdunstung des in die Textilbewicklung der Walzen 2, 3, 4 eingelagerten Wassers. Durch die Rückführung der Abluft wird weiter erreicht, dass die Textilbewicklung der Walzen 2, 3, 4 ebenfalls im Vergleich zur Vorrichtung nach Fig. 1 wesentlich höhere Temperaturen aufweisen, wodurch die Aufheizzeit der Textilbewicklung der Walzen 2, 3, 4 während des Durchgangs durch die muldenförmige Beheizungseinrichtung 8, 9, 10 verkürzt wird, und damit die Walzen 2, 3, 4 mit einer höheren Geschwindigkeit angetrieben werden können. Bei gleichem Energieeinsatz wird eine höhere Leistung der Gesamtvorrichtung erreicht. Bei einer typischen Ausführungsform konnte die Drehzahl von 25 Meter/min. auf 31 Meter/min. erhöht werden.According to the invention, the temperature is substantially increased by blowing the heated and largely dehumidified exhaust air into the air space above the rollers 2, 3, 4. This has the consequence that the rollers with respect to their surface on the ventilation section, ie after the exit from the trough-shaped heating device, until re-immersion in the trough-shaped heating device only slightly cool and also improves the higher temperature in the upper space of the rollers 2, 3rd , 4 the evaporation of the stored in the Textilbewicklung the rollers 2, 3, 4 water. By returning the exhaust air is further achieved that the Textilbewicklung the rollers 2, 3, 4 also in comparison to the device according to Fig. 1 have significantly higher temperatures, whereby the heating time of Textilbewicklung the rollers 2, 3, 4 during the passage through the trough-shaped heating device 8, 9, 10 is shortened, and thus the rollers 2, 3, 4 can be driven at a higher speed. With the same energy use, a higher performance of the overall device is achieved. In a typical embodiment, the speed of 25 meters / min. at 31 meters / min. increase.

Bei der erfindungsgemäßen Vorrichtung handelt es sich um sogenannte Hochleistungs-Muldenmangeln nach DIN 11909.In the device according to the invention are so-called high-performance trough mangles according to DIN 11909.

Durch die Verwendung des kasten- bzw. rahmenförmigen Aufbaus 30 lässt sich die Erfindung auch bei vorhandenen Vorrichtungen dieser Art nach Fig. 1 nachrüsten.By using the box-shaped or frame-like structure 30, the invention can also be applied to existing devices of this type Fig. 1 retrofit.

Bei einer weiteren bevorzugten Ausführungsform der Erfindung ist ein Sensor 32 vorgesehen zur Messung der Temperatur bzw. Feuchtigkeit innerhalb des Wanne 5, wobei der Sensor mit einem Mikrocomputer 34 verbunden ist. Weiterhin ist die Drosseleinrichtung 22 mit einem Mikrocomputer 34 verbunden ebenso wie das Absauggebläse 19. Damit lässt sich abhängig von der gemessenen Temperatur bzw. Feuchtigkeit durch den Sensor 32 eine Steuerung der rückgeführten Abluft ermöglichen, wie auch eine Steuerung des Gebläses 19, gegebenenfalls auch eine Steuerung der Drehzahl der einzelnen Walzen 2, 3, 4 durch eine mittels einer an dem Computer 34 angeschlossenen Drehzahlsteuerung 45. Mit einer derartigen Regelung lässt sich damit die Geschwindigkeit der Walzen an die jeweiligen Bedingungen anpassen. Die Walzen 2, 3 und 4 sind parallel und hintereinander, vorzugsweise auf gleichem Niveau, vorgesehen.In a further preferred embodiment of the invention, a sensor 32 is provided for measuring the temperature or humidity within the tub 5, wherein the sensor is connected to a microcomputer 34. Furthermore, the throttle device 22 is connected to a microcomputer 34 as well as the exhaust fan 19. This allows depending on the measured temperature or humidity by the sensor 32 control of the recirculated exhaust air, as well as a control of the fan 19, possibly also a controller the speed of the individual rollers 2, 3, 4 by means of a speed control 45 connected to the computer 34. With such a scheme can thus adjust the speed of the rollers to the respective conditions. The rollers 2, 3 and 4 are parallel and behind one another, preferably at the same level, provided.

Bei der dargestellten Ausführungsform wird die Abluftleitung 16 vorzugsweise einem Wärmetauscher 40 zugeführt, der als Sekundärkreis Leitungen 41, 42 für eine Laugendurchführung aufweist. Auf diese Weise wird die erhitzte Abluft zur Wärmerückgewinnung und zur Aufheizung von Waschlauge verwendet, die einem separaten Waschkreis zugeführt wird.In the illustrated embodiment, the exhaust duct 16 is preferably fed to a heat exchanger 40 having a secondary circuit lines 41, 42 for a leaching duct. In this way, the heated exhaust air is used for heat recovery and heating of wash liquor, which is fed to a separate wash cycle.

Wie sich aus Fig. 1 und Fig. 2 weiter ergibt, sind die muldenförmigen Vertiefungen der Beheizungseinrichtung 8, 9, 4 über entsprechende Scheitelabschnitte 44, 45 (Fig. 2) miteinander verbunden, so dass die Mulden 8, 9, 10 und die Scheitel 44, 45 insgesamt als etwa S-förmige oder sinusförmige Führung für den Durchlauf der Tuchbahnen bzw. Fallwäschebahnen dienen. Die die Beheizungseinrichtung bildende Mulde selbst hat entsprechend Fig. 3 einen Verlauf entsprechend einem Winkel α entlang der Oberfläche der betreffenden Walzen 2, 3, 4, wobei der Winkel α etwa 180° beträgt. Damit ist jede Walze 2, 3, 4 während des Betriebs jeweils über einen Winkel von etwa 180° in die Beheizungsmulden 8, 9, 10 eingetaucht, während ein Oberflächenbereich über etwa 180° nach oben zur Entlüftung freisteht. Die Mulden 8, 9, 10 und Scheitelabschnitte 44, 45 bestehen vorzugsweise aus einer entsprechend gepressten Führungsbahn aus Edelstahl.As it turned out Fig. 1 and Fig. 2 Furthermore, the trough-shaped depressions of the heating device 8, 9, 4 via corresponding vertex sections 44, 45 (FIG. Fig. 2 ), so that the troughs 8, 9, 10 and the apexes 44, 45 serve overall as an approximately S-shaped or sinusoidal guide for the passage of the fabric webs or fall laundry webs. The forming the heating device trough itself has accordingly Fig. 3 a course corresponding to an angle α along the surface of the respective rollers 2, 3, 4, wherein the angle α is about 180 °. Thus, each roller 2, 3, 4 immersed during operation in each case over an angle of about 180 ° in the heating recesses 8, 9, 10, while a surface area over about 180 ° upwards for venting is free. The troughs 8, 9, 10 and vertex sections 44, 45 preferably consist of a correspondingly pressed guide track made of stainless steel.

Claims (8)

  1. An apparatus for ironing flatwork laundry, such as towel webs or the like, having at least two rollers (2, 3, 4), which are arranged substantially parallel and one behind the other inside an enclosure (1),
    having an extractor means (12, 13, 14) and an exhaust air pipe (16) connected to the extractor means (12, 13, 14), a heating means (8, 9, 10) in each case of a trough-shaped configuration being associated with each ironing roller (2, 3, 4) over a predetermined circumferential region,
    characterised in that
    an exhaust air line (20) is provided at the last roller (4) in the working direction, which line is connected via an extractor fan (19) and a throttle means (22) to a blow-in pipe (24), which passes into the enclosure (1), and via a bypass line (26) to the exhaust air pipe (16),
    and in that the blow-in pipe (24) conveys the exhaust air recirculated solely from the last roller (4) into the air space over all the rollers (2, 3, 4),
    the extractor fan (19) extracting more air than is recirculated into the enclosure (1) via the throttle means (22) and the blow-in pipe (24), and the surplus exhaust air being passed via the bypass line (26) into the exhaust air pipe (16).
  2. An apparatus according to claim 1, characterised in that the exhaust air line (20) is arranged approximately axially to the side of the last roller (4).
  3. An apparatus according to any one of the preceding claims, characterised in that the enclosure (1) comprises a cover (18), which is extended vertically by means of a frame (30) to accommodate the exhaust air line (20) or the blow-in pipe (24).
  4. An apparatus according to any one of the preceding claims, characterised in that the exhaust air pipe (16) is connected to a heat exchanger (40).
  5. An apparatus according to claim 4, characterised in that the heat exchanger (40) comprises as secondary circuit a line for conveying washing liquor.
  6. An apparatus according to any one of the preceding claims, characterised in that a control system (34) is provided, which is connected at least to a temperature sensor (32) above the rollers (2, 3, 4) and to the extractor fan (19) in the exhaust air line (20).
  7. An apparatus according to claim 6, characterised in that the throttle means (22) is connected to the control system (34).
  8. An apparatus according to claim 6 or claim 7, characterised in that the control system (34) is connected to a speed controller (45) for the rollers (2, 3, 4).
EP06123513A 2005-11-16 2006-11-06 Device for ironing flatwork laundry Not-in-force EP1788143B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005054689A DE102005054689A1 (en) 2005-11-16 2005-11-16 Device for mangling flat laundry tracks

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EP1788143A1 EP1788143A1 (en) 2007-05-23
EP1788143B1 true EP1788143B1 (en) 2011-11-02

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AT (1) ATE531846T1 (en)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013197A1 (en) * 2008-03-07 2009-09-10 Herbert Kannegiesser Gmbh Method for mangling laundry items and tray shortage
CN103306118B (en) * 2013-07-04 2015-04-15 苏州曼诚纺织有限公司 Microwave flannelette shaping device
CN115012157A (en) * 2022-07-04 2022-09-06 安徽天一新型纤维科技有限公司 Steam ironing equipment for garment materials production

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2219895A1 (en) * 1972-04-19 1973-10-31 Grosswaescherei Robert Raatz I MONITORING AND CONTROL DEVICE FOR LAUNDRY DRUM MACHINES
DE3041245A1 (en) * 1980-11-03 1982-05-27 Herbert Kannegiesser Gmbh + Co, 4973 Vlotho Wet laundry smoothing control - uses air moisture-temp. to set operation of each roller
EP0053088A1 (en) * 1980-11-25 1982-06-02 Otto Stichnoth Method and apparatus for guiding the air in a mangle
DE3123886C2 (en) * 1981-06-16 1983-11-24 Andreas 3400 Göttingen Stichnoth "Method and device for guiding the air to a mangle"
DD206505A3 (en) * 1981-07-20 1984-01-25 Christian Wolff METHOD FOR OPERATING A DEVICE OF HEAT AND HEALTH DAMAGE HEREFUER
DE3444905A1 (en) * 1984-12-08 1986-06-12 Gottfried Dipl.-Ing. Dr.techn. Waidhofen Pointner Trough-type mangle
DE3618359A1 (en) * 1986-02-04 1987-08-06 Effma Waeschereitechnik & Masc Process and apparatus for sucking off moisture from a roller of a laundry mangle
DD269410B1 (en) * 1988-03-02 1992-09-03 Hentschel Peter Juergen METHOD AND DEVICE FOR EXHAUST AIR USE IN THREEL DEFECTS
DE9112647U1 (en) * 1991-10-11 1991-11-28 Boewe-Passat Reinigungs- Und Waeschereitechnik Gmbh, 8900 Augsburg, De

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DE102005054689A1 (en) 2007-05-31
ATE531846T1 (en) 2011-11-15

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