EP3538700B1 - Procédé et dispositif de traitement de linge - Google Patents

Procédé et dispositif de traitement de linge Download PDF

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Publication number
EP3538700B1
EP3538700B1 EP17794896.5A EP17794896A EP3538700B1 EP 3538700 B1 EP3538700 B1 EP 3538700B1 EP 17794896 A EP17794896 A EP 17794896A EP 3538700 B1 EP3538700 B1 EP 3538700B1
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EP
European Patent Office
Prior art keywords
laundry
conveyor
drying
liquid
items
Prior art date
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Active
Application number
EP17794896.5A
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German (de)
English (en)
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EP3538700A1 (fr
Inventor
Wilhelm Bringewatt
Engelbert Heinz
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.)
Herbert Kannegiesser GmbH and Co
Original Assignee
Herbert Kannegiesser GmbH and Co
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Application filed by Herbert Kannegiesser GmbH and Co filed Critical Herbert Kannegiesser GmbH and Co
Publication of EP3538700A1 publication Critical patent/EP3538700A1/fr
Application granted granted Critical
Publication of EP3538700B1 publication Critical patent/EP3538700B1/fr
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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
    • D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/10—Drying cabinets or drying chambers having heating or ventilating means
    • D06F58/12—Drying cabinets or drying chambers having heating or ventilating means having conveying means for moving clothes, e.g. along an endless track
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • 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
    • D06F60/00—Drying not provided for in groups D06F53/00 - D06F59/00
    • 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
    • D06F95/00—Laundry systems or arrangements of apparatus or machines; Mobile laundries 

Definitions

  • the invention relates to a method for treating laundry according to the preamble of claim 1.
  • the invention further relates to a device for treating laundry according to the preamble of claim 15.
  • Laundry especially items of laundry such as flat linen or molded items, are washed and then dried.
  • Washing is usually done in a washing machine with a rotating drum.
  • these are often designed as elongated, rotatable drums to form so-called continuous washing machines.
  • the items of laundry are constantly circulated together with a treatment liquid and washed in the process.
  • Drying is also done, especially in commercial laundries, in a dryer with a rotating drum.
  • the items of laundry are circulated in the drum as a result of the rotating drive of the drum and the flow generated by preferably hot drying air.
  • washing machines and dryers have proven themselves in practice, especially in commercial laundries, although they have certain disadvantages, for example the constant movement of the laundry items in the drums leads to mechanical stress on the laundry items and the movement of the laundry items in the drums is energy-consuming.
  • the EP 2 369 051 A1 discloses a dryer that works according to the continuous flow principle, in which items of laundry are dried while lying flat and then folded.
  • the invention is based on the object of creating a method and a device for treating laundry, in particular items of laundry, which enable the laundry to be treated with the greatest possible care and are efficient.
  • a method for solving this problem has the measures of claim 1.
  • the wet treatment and drying take place equally continuously, namely as the laundry items pass through the wet treatment and drying area.
  • the items of laundry are placed in the stretched out or spread out state at the beginning of the conveyor in the wet treatment area. This is done using an input machine, such as is common in mangles. This means that the items of laundry can be placed individually and in the spread out state onto the beginning of the conveyor to transport the items of laundry through the wet treatment and the dryer.
  • the dried items of laundry, in their spread out state are transferred directly from the conveyor in the area of the dryer to a feed conveyor of a subsequent folding machine or a ironer.
  • Such a transfer is expedient because, as a result of the wet treatment and drying of the laundry items in the spread-out state, at the end of the dryer the laundry items are in a spread-out, stretched state required for further processing by a folding machine or a ironer.
  • the feed conveyor of the subsequent laundry treatment device can be omitted by being formed by the end of the conveyor which transports the laundry items through the drying zone.
  • the method described above can be integrated particularly in a processing line for feeding the laundry items for wet treatment and further treatment of the laundry items after drying, for example by folding and/or ironing.
  • Such integration is particularly simple and advantageous because the laundry items are wet-treated and dried while lying on a conveyor when they are spread out.
  • the items of laundry are usually further processed, in particular ironed and/or folded. Feeding spread-out items of laundry to the conveyor in the wet treatment area is also particularly easy with the input machines available for this purpose.
  • the laundry items lie motionless on the at least one conveyor, which moves them through the wet treatment and drying area.
  • the laundry items are dried after the wet treatment.
  • the laundry items preferably pass through the wet treatment and drying area at the same speed.
  • the complete treatment namely at least washing, rinsing and drying, and also at least one disinfection, takes place immediately one after the other along a conveyor path formed by at least one conveyor, which extends through the wet treatment and drying area.
  • this method according to the invention does not require reloading the laundry items from a post-treatment device, for example a washing machine, to a dryer.
  • the laundry or items of laundry are preferably dried immediately after the wet treatment, in particular rinsing.
  • the items of laundry are thus transported or conveyed in the spread out, lying state not only through the wet treatment area, but also through the drying area immediately adjacent to it.
  • the wet treatment in particular at least the washing and rinsing, and the subsequent drying are carried out with several successive conveyors.
  • the conveyors connect directly to one another so that they form a continuous transport route.
  • the transport speed of the conveyors in the wet treatment area and in the drying area is expediently coordinated with one another, for example synchronized.
  • the washed and rinsed and, if necessary, disinfected items of laundry are thus transported in an uninterrupted flow through the wet treatment area and the drying area, in particular at the same transport speed.
  • the items of laundry remain spread out on the conveyor, even if they are transported further using several successive conveyors.
  • the laundry in particular items of laundry, are splashed and/or sprayed with a liquid when spread out and thereby washed.
  • This can be done without a rotating drum. It is also not necessary to constantly circulate the laundry items in the liquid used for washing.
  • the method according to the invention enables gentle and energy-saving washing of items of laundry that are at rest.
  • the laundry or items of laundry are splashed and/or sprayed with liquid under pressure and the laundry is penetrated by the liquid under pressure.
  • These can be pressurized liquid jets, liquid mist and/or liquid cones.
  • the spraying or spraying of the items of laundry takes place with such an intensity that the laundry is washed hydrodynamically.
  • the laundry or laundry items can also be completely or partially immersed in a liquid. This is preferably spray and/or spray liquid collected in a collecting container. The laundry or items of laundry are then both sprayed or sprayed during at least part of their treatment and moved, preferably pulled, at least partially through the liquid, in particular the same liquid.
  • the liquid jets are preferably generated by nozzles, in particular high-pressure nozzles or high-pressure spray nozzles.
  • the energy or momentum of the relatively high-velocity and/or pressurized liquid leads to a relative movement, preferably cavitation and/or microjets, between the liquid and the laundry items, which is more intense than that caused by the rotating drum in conventional washing machines generated relative movement between the liquid used for washing and the laundry.
  • the items of laundry are sprayed and/or sprayed with liquid jets of at least one liquid in the spread-out and/or resting state and, if necessary, moved through a bath with liquid, preferably the same liquid. It is particularly advantageous to penetrate the laundry items with the at least one liquid when they are spread out or stretched out on at least one conveyor and/or are at rest.
  • the items of laundry do not need to move relative to the conveyor, in particular an upper run on which they rest, so that they lie or rest motionless on the upper run of the conveyor.
  • the nozzles for generating the liquid jets can therefore be arranged in a stationary manner above the upper run of the conveyor.
  • An advantageous embodiment of the method provides that the at least one liquid is injected and/or sprayed onto a free side, preferably an upper side, of the laundry items and at least a portion of this liquid is drained from the laundry items from an opposite side, preferably an underside becomes. It has proven to be expedient to design a conveyor belt of the conveyor that carries items of laundry to be washed to be liquid-permeable.
  • the liquid jets that hit the top of the laundry items at high speed and under pressure can pass or flow unhindered not only through the laundry items, but also through the upper run of the conveyor carrying them, thereby generating hydrodynamic cavitation, which has a cleaning and cleaning effect on the laundry /or has a rinsing effect. This is preferably done using high-pressure liquid jets with a high impulse.
  • disinfection with ultrasound and peracetic acid takes place. It is advantageous to carry out this disinfection of the laundry items in a liquid bath with peracetic acid, with the laundry items preferably being transported through the liquid bath for disinfection.
  • the liquid bath is caused to vibrate using ultrasound.
  • the concentration of peracetic acid in the liquid bath with water only needs to be very low if, according to the invention, ultrasonic waves are additionally generated in the liquid bath. It is then sufficient if the water only has a very low concentration of 0.02% to 4%, in particular 0.04% to 2%, of peracetic acid.
  • the peracetic acid can reach all parts of the fabric of the laundry items.
  • the disinfection can therefore be carried out with a lower peracetic acid concentration in the disinfection bath if it is set into ultrasonic vibrations by at least one sonotrode or the like. Above all, disinfection can take place more quickly, so that disinfection does not increase the duration of the washing process.
  • the better effect of peracetic acid in the disinfectant liquid is primarily due to the fact that ultrasonic disinfection with peracetic acid exerts a hydrodynamic, acoustic gravity on the laundry to be disinfected in the disinfectant liquid.
  • disinfection in the ultrasonic bath or disinfection bath can be carried out more quickly and, above all, with a reduced peracetic acid concentration in the water, especially sterile water.
  • An advantageous development of the method provides that at least part of the liquid bound in the laundry or in the laundry items is removed after and/or during washing. As a result, dirt bound to the liquid is separated from the liquid or taken along with the liquid when the liquid is removed from the laundry. This makes the subsequent wet treatment more effective. This is especially true if a part, especially a large part, of the liquid bound in the laundry is separated from it mechanically and/or pneumatically before rinsing.
  • the method is provided to wash the laundry in a prewash zone and a final wash zone and to rinse it in at least one rinsing zone, preferably a process water rinsing zone and a fresh water rinsing zone.
  • the multiple zones enable intensive washing and/or rinsing.
  • the laundry items are transported one after the other through the individual zones in the treatment direction by the common conveyor.
  • a time-consuming reloading of laundry items from one zone to another, as is required in continuous washing machines, can therefore be eliminated with the method according to the invention.
  • the laundry or the laundry items are preferably dried one after the other by several successive drying devices.
  • the laundry items are dried step by step and/or gradually.
  • the number and/or type of successive drying devices can be varied according to needs, in particular adapted to the intensity of drying and the type or material of the laundry items.
  • each drying device forms a drying strip running transversely to the transport direction of the at least one conveyor carrying the laundry in the spread out state.
  • each drying device dries the items of laundry over their entire width, preferably the working width of the conveyor, continuously, over the entire surface and/or without gaps.
  • a further development of the method envisages providing at least one drying device which differs in type from some or all of the other drying devices.
  • Hot air generators, infrared radiators, air nozzles, especially hot air nozzles, and/or drying devices that generate shock waves or impulse pulses can be used as drying devices. All successive drying devices can be of the same type. However, at least one drying device is preferably designed differently than one or more of the other drying devices. It is therefore conceivable to use drying devices of various types for the successive drying of the laundry items. Drying can thus be carried out selectively and as needed. In addition, drying can be carried out in an energy-efficient manner.
  • the conveyor serves to link the individual successive drying devices.
  • the items of laundry to be dried were dried during the entire drying process in the spread out state on the conveyor, in particular its upper strand, which is preferably at least air-permeable.
  • the laundry items do not need to move even during the drying process; Rather, they are gradually and continuously moved along the drying devices by the conveyor while they are lying motionless on the same.
  • An advantageous embodiment of one type of drying device provides for feeding air nozzles of this at least one drying device with ambient air and/or waste heat from preferably a laundry machine. This means that at least part of the laundry can be dried independently, i.e. without additional energy. Rather, recovered heat energy is used for drying in at least one drying device that works with air nozzles. This leads to improved energy efficiency of the drying process.
  • disinfection in particular dry disinfection
  • it can be a plasma disinfection that can be carried out dry and therefore does not lead to the introduction of moisture into the at least partially dried laundry.
  • Another possible embodiment of the method provides for the residual moisture and/or the temperature of the laundry to be determined by at least one sensor directed at the laundry to be dried.
  • the residual moisture and/or the temperature of the laundry are preferably determined by at least one sensor without contact, for example with an infrared sensor or an infrared camera.
  • the at least one measured value which is preferably determined continuously or at regularly successive time intervals, allows conclusions to be drawn about the degree of dryness of the laundry. Accordingly, the method can be controlled, for example by changing the intensity of drying of the laundry using the individual drying devices and/or changing the transport speed the laundry through the dryer, i.e. past the successive drying devices. It is also conceivable to switch off or switch on individual drying devices based on the measurement results.
  • a device for solving the problem has the features of claim 15.
  • This device is used for washing and drying laundry or items of laundry, preferably at the same time.
  • the dryer follows the washing device immediately. Both in the laundry facility and in the dryer, the laundry items are spread out on an upper run of a single common conveyor or on upper runs of directly successive conveyors to form a common, continuous conveyor path.
  • the conveyor line thereby connects the washing device and the dryer, so that the laundry items can be transported continuously from the conveyor line through the washing device and the dryer. This preferably happens continuously according to the continuous flow principle.
  • the conveyor line links the washing device with the subsequent dryer.
  • the items of laundry can be both wet-treated and dried while lying spread out and/or resting on the conveyor line, in particular its at least one upper run.
  • an input machine to be arranged in front of the washing device, which transports the spread out items of laundry directly to the beginning of the conveyor of the washing device. If necessary, this conveyor can already be part of the input machine.
  • This design of the device means that the input machine is linked to the washing device and the dryer to form a continuous processing line or processing line for the laundry or laundry items.
  • the conveyor of the washing device has a placement area at the beginning on which the spread items of laundry can be placed, preferably on the upper run of the conveyor. This means that the items of laundry can be spread out or transferred to the upper run of the conveyor of the washing device without an input machine.
  • the items of laundry dried in the dryer can be fed from the conveyor directly to a subsequent laundry treatment device, in particular a folding machine or a ironer. Because the items of laundry are washed and dried lying on at least one conveyor in the spread out state, they are already in the state that they must be in for ironing or folding, namely in that they are already spread out or stretched out.
  • a subsequent laundry treatment device in particular a folding machine or a ironer.
  • the conveyor being assigned nozzles for wetting and/or spraying the laundry or laundry items with liquids are.
  • the conveyor being assigned nozzles for wetting and/or spraying the laundry or laundry items with liquids are.
  • the nozzles for example designed as high-pressure nozzles, are arranged in at least one row transverse to the transport direction of the conveyor above an upper run of the conveyor, preferably in a stationary manner. Through the at least one row of nozzles, the laundry items can be exposed to liquid from above over their entire width.
  • the at least one row of adjacent nozzles extends over the entire working width of the conveyor.
  • the nozzles are preferably arranged next to one another at such a distance that they can treat the laundry with liquids without any gaps over the entire width and/or the working width of the conveyor. It is also conceivable that the distance between the nozzles is chosen at least so that their jets overlap slightly. This ensures seamless liquid penetration of the laundry across the entire width of the conveyor.
  • An advantageous further development option for the device provides for at least one drainage device at least at the end of the washing zone or the last washing zone is arranged for mechanical and/or pneumatic removal of at least part of the liquid bound in the laundry.
  • at least part of the liquor bound in the laundry with liquid used for washing and possibly also dirt is removed from the laundry before rinsing. This leads to more efficient rinsing of the laundry.
  • the conveyor is designed as a belt conveyor with at least one continuously drivable conveyor belt.
  • This at least one conveyor belt is preferably designed to be liquid-permeable.
  • the at least one belt conveyor enables a continuous transport of the laundry resting and spread out on it, whereby it is gradually and continuously sprayed and/or sprayed with liquid by the nozzles.
  • the liquid-permeable design of the at least one conveyor belt of the belt conveyor the liquid can flow through the laundry items and, together with the dirt carried along, can be drained away through the at least one liquid-permeable conveyor belt, for example into at least one collecting container.
  • the conveyor belt of the belt conveyor with the laundry lying on it can also be guided at least in some areas through the collecting container with washing liquid. In this way, the laundry resting spread out on the belt conveyor is also transported through, in particular pulled through, the liquid used for sprinkling and/or spraying in the collecting container. This leads to an intensification of the laundry.
  • the liquid collected in the collection container can be recovered and/or reused. This is done by transporting the liquid, in particular process liquid, back against the direction of treatment of the laundry, for example to the beginning of the device, in particular the washing zone of the same.
  • the returned liquid can optionally be processed before reuse, for example by filtering and/or replenishing detergent substances or the like.
  • the conveyor belt is sufficiently permeable to liquid, it can preferably be designed to have a coarse mesh through a net-like and/or grid-like design.
  • the conveyor thereby takes on a linking function by transporting the items of laundry to be dried one after the other past the various drying devices. This makes it possible to dry the items of laundry individually depending on their type, in particular their material, by preferably only operating drying devices that are suitable and/or efficient for the laundry currently being dried and/or varying the intensity of the drying device becomes.
  • the drying devices are preferably designed as hot air generators, infrared radiators, air nozzles fed with hot air and/or shock wave generators. Such drying devices have different properties and exert different influences on the laundry, so that through targeted operation of selected drying devices, the laundry can be dried selectively in a manner that is optimal for its material.
  • the at least one conveyor of the dryer has at least one continuously drivable conveyor belt, which is formed from an at least air-permeable material, so that the hot air, air jets and / or shock waves directed from the drying devices onto the laundry items pass through the spread laundry items and the at least one conveyor belt Conveyor can penetrate and thereby the hot air, the jets and / or the shock waves can penetrate the laundry unhindered by the conveyor belt of the conveyor.
  • the device it is provided to preferably arrange a sensor or, if appropriate, several sensors above the upper run of the at least one conveyor for the preferably contactless determination of the degree of drying, the temperature and/or the residual moisture of the laundry. Using the measured values obtained in this way, the drying process can be controlled or regulated depending on the drying result.
  • the transport speed of the at least one conveyor along the drying device can be individually adapted to the laundry items that are currently being dried.
  • the devices shown in the figures are used to treat laundry, particularly individual items of laundry.
  • the items of laundry are preferably so-called flat linen such as tablecloths, napkins, bed covers, pillowcases and bed sheets.
  • the device of Fig. 1 and 2 are used for the wet treatment of the laundry items, namely for washing and/or rinsing and/or disinfecting the laundry items.
  • This device is referred to below as a washing device 10.
  • the washing device 10 has a single continuous conveyor, which in the exemplary embodiment shown is a belt conveyor 11.
  • the belt conveyor 11 is driven in a rotating manner with an upper strand 13 moving in the treatment direction 12.
  • a conveyor belt of the belt conveyor 11 extends over the entire working width of the washing device 10.
  • the conveyor belt is permeable to liquid, for example in that it is designed like a network or grid.
  • the washing device 10 shown has several treatment zones that follow one another continuously in the treatment direction 12, namely a prewash zone 14 at the beginning of the washing device 10 and a subsequent final washing zone 15, which are used to wash the laundry items.
  • the clear washing zone 15 is directly followed by a process water rinsing zone 16 and a fresh water rinsing zone 17. These together form a rinsing zone.
  • the process water rinsing zone 16 can optionally be omitted, so that rinsing takes place in only one rinsing zone.
  • the items of laundry can be disinfected in the rinsing zone or after the rinsing zone.
  • the items of laundry can be disinfected chemically, i.e. moistly, and/or by plasma jets and/or by peracetic acid.
  • the items of laundry lying spread out on the upper run 13 of the belt conveyor 11 are continuously transported one after the other through the individual zones of the washing device 10 by the single belt conveyor 11.
  • the upper run 13 of the belt conveyor 11 is guided around several deflection drums 18 to 24 which are spaced apart in the treatment direction 12, at least one of which also serves as a drive drum.
  • the deflection drums 18, 20, 22, 23 and 24 lie in a common, preferably horizontal plane.
  • the deflection drums 19 and 21 lie in a common lower level which runs parallel to the upper level with the deflection drums 18, 20, 22, 23 and 24.
  • the upper run 13 in the area of the prewash zone 14 and the final wash zone 15 only has a V-shaped course (seen from the side) with a lower apex, which is defined by the deflection drums 19 and 21.
  • the lower-lying deflection drum 19 of the pre-washing zone 14 lies between the deflection drums 18 and 20.
  • the deeper deflection drum 21 of the final washing zone lies between the deflection drums 20 and 22.
  • the upper run 13 in the pre-washing zone 14 has an initial section 25 and which is inclined downwards in the treatment direction 12 a subsequent, ascending section 26.
  • the upper run 13 in the area of the final washing zone 15 has an initial downwardly inclined section 27 and an adjoining ascending section 28, which is located at the end of the washing zone.
  • the sections 25 and 27 on the one hand and 26 and 28 on the other hand are of different lengths, in that the sections 26 and 28 are shorter than the sections 25 and 27, with the sections 25 and 27 on the one hand and 26 and 28 on the other hand being the same length can.
  • Two further deflection drums 29 and 30 lead or form the beginning and the end of a lower run 31 of the conveyor belt of the belt conveyor 11.
  • the lower run 31 runs in a preferably horizontal plane.
  • the plane of the lower run 31 lies at a distance below the plane formed by the deflection drums 19 and 21.
  • the lower deflection drum 29 is arranged at the front end of the belt conveyor 11 of the washing device 10, viewed in the treatment direction 12, below and in front of the deflection drum 18, viewed in the treatment direction 12.
  • the rear bottom one is located Deflection drum 30 at a distance below the deflection drum 24 at the rear end of the upper run 13.
  • the deflection drums 29 and 30 forming and guiding the lower run 31 are arranged at a sufficient vertical distance below the deflection drums 19 and 21 of the upper run 13 .
  • the upper run 13 of the belt conveyor 11 is assigned squeezing rollers or pairs of squeezing rollers both in the washing zone and in the rinsing zone.
  • the upper run 13 being pressed with tension from below against the deflection drums 19 and 21, the respective item of laundry is compressed between the relevant deflection drum 19 and 21 and the upper run 13 and part of the liquid bound in the respective item of laundry is separated from the laundry process.
  • a squeezing roller 35, 36 is assigned to each of the deflection drums 20 and 22 at the end of the prewash zone 14 and the final wash zone 15.
  • the squeezing rollers 35 and 36 lie above the upper run 13, spaced apart by the upper run 13 above the deflection drums 20 and 22.
  • the upper run 23 with the laundry items lying on it runs at the end of the prewash zone 14 between the squeezing roller 35 and the deflection drum 20 and at the end of the Clear washing zone 15 between the squeezing roller 36 and the deflection drum 22.
  • the deflection drums 19 and 21 of the upper run 13 of the belt conveyor 11 are lowered in the pre-washing zone 14 and the final washing zone 15 to such an extent that they, with sections of the upper run 13 located near them, flow into the pre-washing liquid and/or collected in the collecting troughs 33 and/or 34. or submerge clear washing liquid.
  • the items of laundry lying spread out on the upper run 13 are immersed in the liquid in the collecting troughs 33 and / or 34 during further transport through the belt conveyor 11 and transported through them.
  • the treatment liquids collecting in the collecting trough 33 of the pre-washing zone 14 and/or the collecting trough 34 of the final washing zone 15 can be returned counter to the washing direction to the beginning of the pre-washing zone 14 and/or the final washing zone 15 through a return line (not shown in the figures). After filtering or other processing, the final washing and/or pre-washing liquid is fed back to the nozzles for spraying the laundry items and is therefore reused.
  • the rinsing zone has a squeezing roller 37 arranged above the deflection drum 23 between the process water rinsing zone 16 and the fresh water rinsing zone 17.
  • the upper run of the belt conveyor 11 with the items of laundry lying on it runs between the deflection drum 23 and the squeezing roller 37 lying above the upper run 13 .
  • a large part of the rinsing liquid from the process water rinsing zone 16 is thus separated from the laundry items before the fresh water rinsing zone 17.
  • a squeezing roller can also be arranged behind the fresh water rinsing zone 17 above the rear deflection drum 24 in order to separate a large part of the rinsing liquid from the fresh water rinsing zone 17 from the laundry items before they are dried.
  • liquid nozzles above the upper run 13 of the belt conveyor 11 and the items of laundry lying on it preferably high-pressure nozzles. Washing or rinsing liquid exits through these at high speed and high pressure.
  • the high-pressure nozzles can be designed to form flat jets or hollow jets, for example hollow liquid cones. Flat jets with a triangular shape extend transversely to the treatment direction 12 with respect to their long axis (larger width).
  • the high-pressure nozzles are assigned to the sections 25 and 27 of the pre-washing zone 14 and the final washing zone 15 as well as the entire process water rinsing zone 16 and fresh water rinsing zone 17.
  • the high-pressure nozzles are preferably arranged stationary at a distance above the corresponding sections of the upper run 13. This distance is at least so large that the items of laundry lying spread out on the upper run 13 can be transported without contact by the belt conveyor 11 under the high-pressure nozzles.
  • the high-pressure nozzles are arranged in a uniform grid over the sections 25 and 27 of the washing zone and distributed over the entire rinsing zone.
  • the treatment direction 12 several rows of high-pressure nozzles lying next to one another transversely to the treatment direction 12 follow one another.
  • the distances between the rows of high-pressure nozzles are preferably the same as the distances between the high-pressure nozzles in the respective row. This creates a uniform grid, with the high-pressure nozzles of successive rows being arranged alternately in a gap, with the high-pressure nozzles of the second row lying between high-pressure nozzles of the first row.
  • the high-pressure nozzles generate liquid jets with such a pressure and a speed that is sufficient to penetrate the laundry items lying on the upper run 13 with liquid, with excess liquid passing through Upper run 13 of the belt conveyor 11 can flow through and collect in the collecting troughs 33 and 34.
  • rinsing liquid flowing through the upper run 13 can also be collected under the upper run 13 in another way by one or more collecting troughs, not shown.
  • the items of laundry are sprayed more heavily with washing liquid in the washing zone than in the rinsing zone.
  • Spraying preferably high-pressure spraying, with rinsing liquid in the rinsing zone may be sufficient.
  • no high-pressure nozzles are assigned to the sections 26 and 28 of the upper run 13 running up from the deflection drums 19 and 21 in the pre-washing zone 14 and the final washing zone 15.
  • These sections 26 and 28 of the upper run serve as draining sections for excess liquid from the laundry items at the end of the prewash zone 14 and the final wash zone 15.
  • the drained liquid can be collected by the collecting trays 33 and 34, respectively.
  • cone-shaped external shields for the liquid cones 38 under or on the nozzles, in particular high-pressure nozzles. This means that the liquid emerging from the respective high-pressure nozzle can flow to one targeted circular area of the cone shell of the liquid cone 38, which is open at the bottom.
  • nozzle shapes for example flat nozzles or hollow cones, correspondingly shaped shields are assigned to the high-pressure nozzles.
  • the open undersides of the shields which are firmly arranged under the high-pressure nozzles, can alternatively or in addition to the previously described pressure skids be supported on the items of laundry lying spread out in a flat state on the upper run 13 in order to also fix and/or tighten the items of laundry on the upper run .to stretch.
  • the Fig. 2 shows the washing device 10 of Fig. 1 with an input machine 39 arranged in front of the washing device 10 as seen in the treatment direction 12.
  • the items of laundry are manually placed on a feed conveyor 40 of this input machine 39 in one or more lanes in the spread out or stretched out state and preferably fed to the laying section 32 of the belt conveyor 11 of the washing device 10 or it Larger items of laundry are preferably automatically transferred in one or more lanes to a spreading device of the input machine 39, which spreads the items of laundry and deposits them in the spread state on the feed conveyor 40, which then transfers the spread items of laundry to, for example, the laying section 32 of the belt conveyor 11 of the washing device 10.
  • the method according to the invention runs with the washing device 10 Fig. 1 and 2 as follows:
  • the laundry items are either manually placed directly on the laying section 32 of the belt conveyor 11 in one or two lanes in the spread out state or are automatically transferred from the feed conveyor 40 of the input machine 39 to the laying section 32 of the belt conveyor 11 in the spread out state in one or more lanes.
  • the items of laundry lying in the spread out state on the upper run 13 of the belt conveyor 11 are continuously transported by the belt conveyor 11 to and through successive treatment zones of the washing device 10.
  • the wet treatment of the laundry items in the washing device 10 takes place with the laundry items lying spread out on the upper strand 13. According to the continuous process, the laundry items are continuously transported one by one through the successive treatment zones of the washing device 10.
  • liquid cones 38 lying side by side in several successive rows are generated in a uniform grid over the section 25 of the upper run 13. This results in a full-surface spraying and/or spraying of the laundry items with high-speed liquid jets having high pressure. These liquid jets penetrate through the laundry items, thereby washing out dirt from the laundry items. The liquid and the dirt carried flow through the upper run 13 of the liquid-permeable conveyor belt of the belt conveyor 11 and are collected in the collecting trough 33.
  • the liquid cones 38 which are generated in a uniform grid over the section 27 of the upper run 13 by a grid of several high-pressure nozzles, spray and/or spray clear washing liquid over the entire surface of the laundry items which are located in the area of this section 27.
  • the items of laundry are sprayed with high-pressure liquid at high speed, the liquid penetrating the items of laundry and being collected through the upper strand 13 in the collecting trough 34 assigned to the final washing zone 15.
  • the laundry items are transported up on the rising section 28 of the upper run 13 to the end of the clear washing zone 15.
  • the squeezing roller 36 takes place between the deflection drum opposite it 22 a further part, preferably a large part, of the bound liquor is pressed out of the laundry items.
  • the laundry items As a result, only a minimal amount of washing liquid bound in it reaches the subsequent rinsing zone.
  • the items of laundry lying spread out on the upper run 13 are immersed in the treatment liquid in the area of the lower-lying deflection drums 19 of the pre-washing zone 14 and the lower-lying deflection drum 21 in the area of the final washing zone 15 and are transported by the revolving conveyor belt of the belt conveyor 11 through the pre-washing liquid in the Collecting pan 33 and/or the clear washing liquid is drawn through in the collecting pan 34. Because the laundry items also pass between the deflection drums 19 and/or 21, the deflection drums 19 and 21 also press the prewash and/or final wash liquid through the laundry items. This intensifies the prewash and/or final wash.
  • the prewash liquid collected in the collecting trough 33 and/or the final washing liquid collected in the collecting trough can be reused.
  • the pre-wash and/or final wash liquid is transported back from the respective collecting trough 33, 34 through a corresponding line system against the treatment direction and, after any necessary processing, in particular filtering, is fed back to the nozzles for spraying and/or spraying the laundry items.
  • rinsing with process water, i.e. liquid already used for other purposes, first takes place in the process water rinsing zone 16.
  • rinsing is carried out according to the same principle as the washing described above, in that the laundry is sprayed over the entire surface with rinsing liquid during rinsing through a grid of liquid cones 38, preferably with liquid from high-pressure spray nozzles.
  • the rinsing can also be carried out, at least in the process water rinsing zone 16, with liquid jets of high speed and high pressure, whereby the speed and pressure of the rinsing liquid for the following fresh water rinsing can optionally be lower than during washing. It is also conceivable to use rinsing instead Liquid cone 38 to use other nozzles, such as spray nozzles, especially high-speed spray nozzles.
  • a pair of squeezing rollers is arranged, which is formed from an upper squeezing roller 37 and a lower deflection drum 23 opposite this, which therefore has a multiple function, namely not only serves to guide the upper run 13, but also contributes to the formation of a pair of squeezing rollers.
  • At least a large part of the rinsing liquid bound in the laundry items from the process water rinsing process is removed from the laundry items by the squeezing roller 37 and the deflection drum 23 assigned to it at the end of the service water rinsing zone 16.
  • a large part of the process water rinsing liquid is separated from the laundry items before the subsequent fresh water rinsing zone 17.
  • the items of laundry are basically rinsed in the same way as in the process water rinsing zone 16. Only fresh water is used for the final rinsing instead of process water. Rinsing in the fresh water rinsing zone 17 can be carried out with less energetic, preferably weaker liquid jets and/or only by spraying. After rinsing the laundry with fresh water, the wet treatment process of the laundry items is completed. Before the laundry items are further processed, it can be provided that a part, preferably a large part, of the liquid still bound in the laundry items is removed from the fresh water rinsing process, even or only at the end of the fresh water rinsing zone 17. This can in turn be done by squeezing rollers by placing one in the rear deflection drum 24 Fig. 1 and 2 Squeezing roller, not shown, is arranged, but alternatively also pneumatically by, for example, so-called “air knives”.
  • the laundry When washing, preferably during the final wash or at the end of the final wash zone, the laundry is disinfected if necessary.
  • This disinfection takes place in an ultrasonic bath with a mixture of at least water, preferably sterile water, and peracetic acid.
  • the water only contains a small amount of peracetic acid, so that the ultrasonic bath used as a disinfection bath only contains a small concentration of peracetic acid.
  • the disinfection bath is caused to vibrate ultrasonically by an ultrasound source, for example a sonotrode.
  • an ultrasound source for example a sonotrode.
  • the laundry is transported through the disinfectant bath, which is subjected to ultrasonic vibrations. Finds it a rapid and effective disinfection of the laundry takes place in the disinfection bath with a low peracetic acid concentration of preferably 0.04% to 2% in the vibration-stimulated disinfection bath.
  • the ultrasonic vibrations lead to a hydrodynamic-acoustic gravity of the laundry in the disinfection bath, which increases the effectiveness of the peracetic acid in the disinfection bath, whereby effective, in particular complete, disinfection can be achieved with a lower peracetic acid concentration and / or a shorter residence time of the laundry in the disinfection bath subjected to ultrasonic vibrations is.
  • the method described above enables the wet treatment, namely washing, rinsing and, if necessary, disinfecting, items of laundry spread out in the state resting on the upper run 13 of the belt conveyor 11, with the items of laundry only being stationary above the upper run 13, which is continuously moved in the treatment direction 12, under the exemplary embodiment shown Belt conveyor 11 and the nozzles or high-pressure nozzles arranged on it and the liquid jets generated by them are moved along.
  • the method according to the invention is characterized in that at the end of the prewash zone 14, the final wash zone 15 and preferably also the process water rinsing zone 16, a part, in particular a large part, of the treatment liquid is separated from the laundry items before they are further treated in the next step. This leads to the greatest possible bathroom separation. Only a small amount of treatment liquid is carried over from one zone to the other.
  • the squeezing roller 37 between the process water rinsing zone 16 and the fresh water rinsing zone 17 also at least largely prevents the carryover of rinsing liquid in the rinsing zone.
  • the Fig. 3 and 4 show a device designed as a dryer 41 for drying laundry or items of laundry.
  • the laundry items are primarily flat laundry items.
  • the dryer 41 serves with the washing device Dry 10 washed and rinsed and, if necessary, disinfected items of laundry.
  • the dryer 41 has a conveyor that runs throughout the entire drying section, which is preferably a belt conveyor 42.
  • the belt conveyor 42 also has a conveyor belt that runs throughout its entire working width. This is designed to be at least air-permeable.
  • the rotating conveyor belt of the belt conveyor 42 is preferably continuously driven in rotation, so that its upper strand 43 moves in the treatment direction 12.
  • the items of laundry are in the same state on the upper run 43 of the belt conveyor 42 as they are on the upper run 13 of the belt conveyor 11 of the washing device 10 when washing. This means that the items of laundry are also dried in the dryer 41 when they are spread out on the upper strand 13 and are at rest.
  • the upper run 43 of the dryer 41 runs in a straight line in that it lies in a plane that is preferably horizontal. At a parallel distance below there is a lower strand 44 of the dryer 41.
  • the endless conveyor belt of the belt conveyor 42 is therefore guided and deflected only by a front deflection drum 45 and a rear deflection drum 46.
  • One of the deflection drums 45 and 46 is designed as a drive drum.
  • At least one dryer is arranged above the upper run 43.
  • the dryer 41 is assigned several drying devices.
  • the exemplary embodiment shown involves various drying devices.
  • the drying devices follow one another at the same or different intervals in the treatment direction 12. As a result, the drying devices are distributed over the upper run 43.
  • the drying devices are assigned to the front majority of the length of the upper run 43, so that no drying devices are assigned to a rear part of the upper run 43 as seen in the treatment direction 12. This part corresponds to a third to a quarter of the length of the upper run 43 of the belt conveyor 42.
  • the drying devices are arranged at a slight distance above the upper run 43. This distance is so large that the drying devices are spread out or resting on the upper run 43 of the dryer 41 Do not touch the laundry items and preferably lie at least partially above the laundry items at a slight distance.
  • the drying devices extend over the entire width of the upper run 43 of the belt conveyor 42. Alternatively, the drying devices can have a width that corresponds to the working width of the dryer 41. The drying devices are then limited to that part of the width of the upper run 43 on which the laundry items lying on the upper run 43 can be located.
  • shock wave applicators 47 there are two preferably identical shock wave applicators 47 at the beginning of the dryer 41 with a slight distance above the upper run 43. It is also conceivable to provide a larger or smaller number of shock wave applicators 47.
  • the shock wave applicators 47 preferably work with sound waves, in particular ultrasound.
  • the shock wave applicators 47 are followed by a drying device formed by a row of air nozzles 48.
  • the distance between the row of air nozzles 48 and the last shock wave applicator 47 is several times as large as the distance between the shock wave applicators 47.
  • the air nozzles of the row of air nozzles 48 are at such a distance that they create a continuous air curtain over the entire working width of the dryer 41, which is directed from above onto the items of laundry lying on the upper layer 43, preferably vertically.
  • the air nozzles are fed with ambient air or exhaust air containing residual heat from another drying device or another laundry treatment device.
  • the air is conveyed under pressure through the air nozzles by a fan, so that air jets emerging from the air nozzles preferably have diffuse air jets.
  • These air jets have a high flow speed, so that they hit the laundry items at a high speed and preferably also penetrate the laundry items.
  • the row of air nozzles 48 is followed at a distance by a further drying device, which is designed as a hot air bar 49 that runs across the entire working width of the dryer 41 and runs transversely to the treatment direction 12.
  • the hot air bar 49 generates at least one hot air curtain extending over the working width of the dryer 41, for example through a series of hot air nozzles located next to one another.
  • the hot air curtain has a high speed, so that it penetrates the laundry items on the upper run 43 of the belt conveyor 42.
  • the hot air bar 49 is fed with hot air. This is air heated by a burner, such as a gas burner, an oil burner or another energy source.
  • a disinfection device is provided at a distance behind the hot air bar 49, which in the exemplary embodiment Fig. 3 and 4 two successive disinfection bars 50 which extend transversely to the treatment direction 12 over the entire working width of the dryer 41.
  • two successive disinfection bars 50 which extend transversely to the treatment direction 12 over the entire working width of the dryer 41.
  • only a single disinfection bar 50 or more than two disinfection bars 50 can be provided.
  • the disinfection bars 50 are designed for dry disinfection of the laundry items.
  • the items of laundry are irradiated by the disinfection beams 50, in particular exposed to energy beams of high energy density and penetrated completely.
  • the disinfection bars 50 are preferably designed for plasma disinfection of the laundry items.
  • the disinfection bars 50 are followed by at least one drying device designed as an infrared radiator 51.
  • the infrared radiator 51 can be gas-operated.
  • the radiation intensity is chosen so that the infrared rays penetrate the items of laundry that are spread out or stretched out on the upper run 43 of the belt conveyor 42 and hit the upper run 43 or pass through it due to its at least air-permeable design.
  • the dryer 41 has at least one sensor means for direct or indirect, preferably non-contact, determination of the degree of drying and/or the residual moisture of the items of laundry to be dried and/or dried.
  • the sensor means can measure the temperature, in particular surface temperature, of the laundry items determine.
  • the at least one sensor means can be formed by an infrared sensor 52, for example an infrared camera.
  • the infrared sensor 52 is provided at the end of the dryer 41, namely its upper run 43.
  • the infrared sensor 52 is in the Fig. 3 and 4 in the edge area of the upper run 43 in order, for example, to determine the degree of drying of the laundry items transported along under the infrared sensor 52.
  • the infrared sensor 52 can also be located at another location in the end region of the upper run, for example in the middle. In multi-lane operation, it may make sense to provide a series of several infrared sensors 52 next to one another.
  • the at least one infrared sensor 52 determines the degree of drying and/or the residual moisture of the item of laundry passing by in a non-contact manner.
  • the dried items of laundry are spread out in the state in which they lie on the upper run 43 of the dryer 41, preferably directly and immediately transferred to a subsequent laundry treatment device.
  • This can be a defect or a defect in the Fig. 4 folding machine 53 shown act.
  • the dried items of laundry can be transferred directly to an inlet conveyor 54 of the folding machine 53 in the already spread out state, i.e. without reorientation.
  • the process according to the invention runs with the dryer 41 Fig. 3 and 4 as follows:
  • the dryer 41 has a conveyor. This serves to continuously transport the items of laundry to be dried along the individual drying devices and/or the at least one disinfection device.
  • the dryer 41 is therefore designed as a continuous dryer.
  • the items of laundry to be dried lie spread out on the upper run 43 of the belt conveyor 42.
  • the items of laundry are thereby stationary and are only moved by the movement of the conveyor belt of the belt conveyor 42 Treatment direction 12 transported through the entire dryer 41. This happens continuously.
  • the upper run 43 of the belt conveyor 42 which is continuously moving in the treatment direction 12, is gradually moved past the drying devices that are successive and spaced apart in the treatment direction 12 and, if necessary, the at least one disinfection device.
  • the items of laundry lying spread out on the upper run 43 are continuously moved along at a distance from the drying devices and, if necessary, the at least one disinfection device underneath them, during further transport in the treatment direction 12.
  • the items of laundry to be dried are moved in the dryer 10 in the exemplary embodiment shown first along the two shock wave applicators 47, then along the at least one row of air nozzles 48, the at least one hot air bar 49, the disinfection bar 50 and the at least one infrared radiator 51, namely under the same.
  • Fig. 3 and 4 only one possible embodiment of the dryer 41 is shown. Modified dryers are conceivable that have more or fewer drying devices. The order and number of different drying devices can depend on the exemplary embodiment Fig. 3 and 4 differ.
  • the at least one disinfection device can also be located at another location in the dryer. A dryer that does not have a disinfection device is also conceivable.
  • infrared sensor 52 or another detection means detect and/or measure the degree of drying of the laundry items or alternatively or additionally the residual moisture of the same. This measurement is carried out in particular without contact and/or on the surface of the dried laundry items.
  • At least one infrared sensor 52 or another detection means not only at the end of the drying section, but also during the course of the drying section between the individual drying and/or disinfection devices.
  • the drying process can be controlled or regulated by changing the intensity of the individual drying devices and/or selectively switching them on or off.
  • the drying process of the item of laundry in question can be influenced by targeted control or regulation of the subsequent drying devices by subsequently making it more intensive, less intensive or, if necessary, not at all is dried more.
  • the items of laundry are sent directly to a subsequent laundry treatment device in the same state in which they were dried, i.e. in the state lying spread out and resting on the upper run 43 of the belt conveyor 42 of the dryer 41, in the exemplary embodiment Fig. 4 a folding machine 53, handed over.
  • This transfer preferably takes place to the upper run of an inlet conveyor 54 of the folding machine 53.
  • the laundry items reach the upper run of the inlet conveyor 54 in a starting position suitable for folding.
  • the laundry items no longer need to be reoriented for folding. They are folded as they leave the dryer.
  • the Fig. 5 and 6 show a device for simultaneous combined wet treatment, i.e. washing, rinsing and drying of laundry or items of laundry. This can include all types of laundry or items of laundry, but preferably flat laundry.
  • the device By linking together a washing device and a dryer, the device represents a combined washing and drying line that processes the laundry items first washes and rinses and then dries. If necessary, disinfection of the laundry items can take place during the wet treatment (washing or rinsing) and/or during the drying process.
  • the washing and rinsing device 10 and the dryer 41 are linked together by conveyors that follow one another directly and virtually without gaps, preferably belt conveyors.
  • the entire treatment line for washing and rinsing as well as drying the laundry items can have only a single continuous conveyor or more than two conveyors.
  • the items of laundry lie spread out on the conveyors or, if necessary, on the only conveyor during treatment. The laundry items therefore rest flat on the at least one conveyor.
  • the washing device 10 of the Fig. 5 and 6 corresponds to that in the Fig. 1 and 2 washing device 10 shown. Reference is made to the associated description. In the Fig. 5 and 6 Therefore, the same reference numbers are used for the same parts.
  • the dryer 41 the Fig. 5 and 6 corresponds to that of Fig. 3 and 4 . Reference is also made to the associated description. The same reference numbers are used again.
  • the belt conveyor 42 of the dryer 41 directly adjoins the belt conveyor 11 of the washing device 10.
  • the laundry items from the washing device 10 can pass directly from the belt conveyor 11 to the belt conveyor 42 of the dryer 41 in the unchanged, spread-out state.
  • at least one transfer means can be provided between the belt conveyors 11 and 42, which serves to transfer the washed items of laundry from the washing device 10 in the unchanged, spread-out, flat state to the dryer 41.
  • the process according to the invention runs with the in Fig. 5 and 6 the device shown as follows:
  • the items of laundry laid flat in the lay-on section 32 of the belt conveyor 11 of the washing device 10 in one or more lanes on the upper run 13 of the belt conveyor 11 are first sprayed or sprayed with liquid in the pre-wash zone 14 and then the pre-wash liquid is partially removed from the items of laundry. in particular largely separated on the deflection drum 19 and between the squeezing roller 35 and the deflection drum 20 opposite it.
  • the laundry items are then washed in the final washing zone 15.
  • the laundry items are first sprayed or sprayed with clear washing liquid and then freed from at least a part, in particular a large part, of the clear washing liquid bound in the laundry items. This happens at the deflection drum 21 and between the squeezing roller 36 and the deflection drum 22 assigned to it. Then the washing process is completed.
  • the laundry items are then rinsed on the upper run 13 of the belt conveyor 11 with only a small amount of liquid from the washing process remaining in the laundry items.
  • the rinsing takes place one after the other first in the process water rinsing zone 16 and then in the fresh water rinsing zone 17.
  • the laundry items are therefore first sprayed or sprayed with process water and then sprayed or alternatively sprayed with fresh water.
  • the laundry items are freed from a part, in particular a large part, of the rinsing liquid bound in them, namely initially process water and then optionally fresh water.
  • the laundry items can be disinfected in the washing device 10. This preferably happens between the clear washing zone 15 and the process water rinsing zone 16. Chemical disinfection is preferably carried out. This can be followed by one or more disinfections.
  • the items of laundry are transferred in the unchanged spread out state from the upper run 13 of the belt conveyor 11 of the washing device 10 to the upper run 43 of the belt conveyor 42 of the dryer 41 and transported by the belt conveyor 42 in the treatment direction 12 through the dryer 41 .
  • the items of laundry lying flat on the upper run 43 are transported by the belt conveyor 42 in the treatment direction 12 along the successive drying devices and, if necessary, the disinfection device.
  • the degree of drying or the residual moisture content of the laundry items is detected without contact by at least one sensor. If there is a deviation from the target drying level or target residual moisture content, control is carried out or control in particular of the drying devices of the dryer 41. This can be done by changing the drying intensity on all or individual selected drying devices, but alternatively or additionally also by switching on and off a drying device or possibly several drying devices. The latter can also be done depending on the type of laundry to be dried.
  • the ones in the Fig. 5 and 6 The device shown is used for uninterrupted, consecutive washing, rinsing and drying and, if necessary, disinfection of the items of laundry transported in one or two lanes by the belt conveyors 11 and 42 in the treatment direction 12 through the washing device 10 and the dryer 41.
  • the device washes, rinses and dries the items of laundry at the same time in a continuous process.
  • the laundry items always remain spread out and flat on the belt conveyors 11 and 42.
  • the laundry items are thus washed, rinsed and dried while they are at rest. If necessary, the laundry items are also disinfected.
  • the washing device 10 By linking the washing device 10 with the dryer 41 as a result of the directly successive belt conveyors 11 and 42, a simultaneous, continuous wet treatment and drying and, if necessary, disinfection of the laundry items takes place in the flat state on the upper run 13 and 43 of the belt conveyors 11 and 42.
  • the belt conveyors 11 and 42 are preferably driven at the same speed. If it turns out that the desired degree of drying or the desired residual moisture of the laundry items cannot be achieved at the end of the dryer, the speeds of the belt conveyors 11 and 42 of the washing device 10 and the dryer 41 can preferably be changed or adjusted accordingly simultaneously and/or equally together . The same applies if heavily soiled items of laundry need to be treated, especially washed.
  • the Fig. 6 shows a device similar to that of Fig. 5 corresponds, but has an input machine 39 with a feed conveyor 40 in front of the washing device 10 and a folding machine 53 is provided behind the dryer 41, which has an inlet conveyor 54.
  • the items of laundry to be treated can be automatically spread out from the input machine 39 and placed on the upper run 13 of the belt conveyor 11 of the washing device 10 in one or two lanes in the spread-out, flat state.
  • the folding machine 53 which is arranged behind the dryer 41 as seen in the treatment direction 12, is used to automatically fold the washed and dried and, if necessary, disinfected items of laundry. This can also happen once or several times. From the upper run 43 of the belt conveyor 42 of the dryer 41, the washed and dried items of laundry are transferred to the folding machine in one or more lanes while maintaining their flat, spread-out state by being placed on the inlet conveyor 54, namely an upper run of the same.
  • the device of Fig. 6 represents a treatment line for the continuous, automatic feeding of spread-out items of laundry to the washing device 10 and for the automatic placement of the items of laundry dried after the wet treatment from the dryer 41 on the inlet conveyor 54 of the folding machine 53.
  • a ironer can also be arranged behind the dryer 41 in place of the folding machine. Then the dried items of laundry (from the end of the belt conveyor 42 of the dryer 41) are transported in one or more lanes in the spread out state to a loading conveyor of the ironer or directly into the inlet side of a trough ironer or other ironer.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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  • Chemical & Material Sciences (AREA)
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Claims (23)

  1. Procédé de traitement par voie humide et de séchage de linge, le linge étant lavé et rincé pendant le traitement par voie humide et le liquide lié venant du traitement par voie humide étant au moins en grande partie éliminé du linge pendant le séchage, caractérisé en ce que le linge est placé au début d'un convoyeur dans la zone de traitement par voie humide en étant étalé par une machine d'entrée (39), le traitement par voie humide et le séchage sont effectués avec le linge étalé sur au moins un convoyeur, et le linge séché est transféré à l'état étalé depuis le convoyeur dans la zone de séchage directement à un convoyeur d'entrée (54) d'une plieuse (53) disposée en aval ou d'une repasseuse.
  2. Procédé selon la revendication 1, caractérisé en ce que le séchage du linge est effectué immédiatement après le traitement par voie humide le long d'un trajet de traitement continu, en particulier le traitement par voie humide et le séchage sont effectués sur des convoyeurs séparés et/ou les vitesses de transport des convoyeurs dans la zone de traitement par voie humide et du séchage sont coordonnées entre elles, de préférence synchronisées.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le linge à l'état étalé est arrosé et/ou aspergé avec au moins un liquide.
  4. Procédé selon la revendication 3, caractérisé en ce que le linge est arrosé et/ou aspergé avec un liquide sous pression et/ou des jets de liquide, de préférence le linge est arrosé et/ou aspergé sur toute la surface et/ou plusieurs fois de suite avec un liquide sous pression et le cas échéant, le linge est plongé dans le liquide.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que le linge est arrosé et/ou aspergé avec l'au moins un liquide à l'état couché et/ou au repos, en particulier le linge est arrosé et/ou aspergé avec l'au moins un liquide à l'état couché sur un convoyeur et/ou au repos sur le convoyeur.
  6. Procédé selon l'une des revendications 3 à 5, caractérisé en ce qu'au moins un liquide est projeté et/ou pulvérisé sur un côté libre, de préférence le côté supérieur, de l'article de linge et au moins une partie de ce liquide est déviée d'un côté opposé, de préférence le côté inférieur, de l'article de linge, de préférence à travers un brin du convoyeur qui est perméable au liquide et qui transporte les articles de linge.
  7. Procédé selon l'une des revendications 3 à 6, caractérisé en ce que, après et/ou pendant le lavage, au moins une partie du liquide lié dans le linge est éliminée, de préférence expulsée du linge.
  8. Procédé selon l'une des revendications 3 à 7, caractérisé en ce que le linge est lavé dans une zone de prélavage (14) et une zone de lavage à l'eau claire (15) et rincé dans au moins une zone de rinçage, de préférence une zone de rinçage à l'eau sanitaire (16) et une zone de rinçage à l'eau douce (17) et/ou le linge est transporté à travers toutes les zones du traitement par voie humide par un convoyeur continu, de préférence un convoyeur à bande (11), de préférence en continu et/ou sans interruption et, le cas échéant, le liquide utilisé pour le traitement par voie humide est collecté et réutilisé.
  9. Procédé selon l'une des revendications 3 à 8, caractérisé en ce que, lors du traitement par voie humide, le linge est désinfecté par ultrasons, de préférence dans un bain contenant un désinfectant ou un auxiliaire de désinfection.
  10. Procédé selon l'une des revendications 3 à 9, caractérisé en ce que le linge est séché successivement à l'aide de plusieurs modules de séchage successifs.
  11. Procédé selon la revendication 10, caractérisé en ce qu'au moins certains modules de séchage sont disposés transversalement à la direction de traitement (12) au-dessus du convoyeur transportant le linge et/ou au moins un module de séchage forme une bande de séchage disposée transversalement au-dessus du convoyeur et s'étendant transversalement à la direction de traitement (12), les modules de séchage étant éventuellement conçus comme des générateurs d'air chaud, des radiateurs infrarouges (51), au moins une rangée de buses d'air (48) et/ou au moins un applicateur d'ondes de choc (47).
  12. Procédé selon la revendication 10 ou 11, caractérisé en ce que des buses d'air, notamment au moins une rangée de buses d'air (48), sont utilisées comme module de séchage, lesquelles sont alimentées en air ambiant ou en air évacué contenant de la chaleur résiduelle en provenance d'un autre module de séchage ou d'un autre module de traitement de linge.
  13. Procédé selon l'une des revendications 10 à 12, caractérisé en ce qu'une désinfection plasma du linge est effectuée pendant le séchage, de préférence avant, pendant et/ou après le séchage.
  14. Procédé selon l'une des revendications 10 à 13, caractérisé en ce que l'humidité résiduelle, le taux de séchage et/ou la température du linge sont déterminés, de préférence sans contact, par au moins un capteur dirigé vers le linge à sécher et le processus de séchage est commandé sur la base des valeurs mesurées, en particulier les modules de séchage utilisés pour le séchage et éventuellement le module de désinfection.
  15. Dispositif de traitement par voie humide et de séchage de linge, comprenant un module de lavage (10) muni d'un séchoir (41), caractérisé en ce que le module de lavage (10) et le séchoir (41) se succèdent directement et forment un chemin de traitement le long duquel le linge peut être transporté dans la direction de traitement à l'aide d'au moins un convoyeur en étant étalé et/ou au repos sur celui-ci, une machine d'entrée (39) est disposée devant le module de lavage (10) et transporte l'article de linge étalé directement au début du convoyeur du module de lavage (10), et le convoyeur comporte à son début une zone de placement sur laquelle le linge étalé peut être placé.
  16. Dispositif selon la revendication 15, caractérisé en ce que le module de lavage (10) et le séchoir (41) comportent chacun au moins un convoyeur, lesquels convoyeurs se succèdent directement pour le transfert immédiat du linge depuis le convoyeur du module de lavage (10) au convoyeur du séchoir (41).
  17. Dispositif selon la revendication 15 ou 16, caractérisé par un convoyeur qui comporte un brin et duquel le linge peut être transporté à l'état étalé sur le brin à travers au moins une zone de lavage et au moins une zone de rinçage, et des moyens d'arrosage et/ou d'aspersion des articles de linge avec un liquide utilisé pour le lavage et le rinçage sont disposés au-dessus du brin du convoyeur qui transporte le linge.
  18. Dispositif selon la revendication 17, caractérisé en ce que des buses, de préférence des buses à haute pression, sont disposées sur au moins une rangée transversalement à la direction de traitement (12) du convoyeur au-dessus du brin, notamment d'un brin supérieur (13) de celui-ci, de préférence de manière fixe, et/ou les buses sont disposées au-dessus du linge situé au-dessus du brin ou du brin supérieur (13) du convoyeur de manière à ce que le linge puisse être mouillé, arrosé et/ou aspergé sur toute sa surface par lesdites buses.
  19. Dispositif selon la revendication 17, caractérisé en ce qu'un module de drainage, destiné à l'évacuation mécanique et/ou pneumatique d'au moins une partie du liquide lié dans le linge, est disposé à au moins une extrémité de la zone de lavage ou de la dernière zone de lavage.
  20. Dispositif selon l'une des revendications 15 à 19, caractérisé en ce que le convoyeur est conçu comme un convoyeur à bande (11) comprenant au moins une bande transporteuse pouvant être entraînée en carrousel et l'au moins une bande transporteuse est perméable au liquide.
  21. Dispositif selon l'une des revendications 15 à 20, caractérisé en ce qu'une pluralité de modules de séchage indépendants séparés qui se suivent à distance dans la direction de traitement (12) sont disposés au-dessus d'un brin supérieur (43) du convoyeur.
  22. Dispositif selon la revendication 21, caractérisé en ce que les modules de séchage sont conçus comme au moins une barre à air chaud (49), un radiateur infrarouge (51), une rangée de buses d'air (48) et/ou un générateur d'ondes de choc (47) et/ou au moins un module de désinfection, de préférence un module de désinfection au plasma, est disposé devant, derrière et/ou entre les modules de séchage.
  23. Dispositif selon la revendication 21 ou 22, caractérisé en ce que le brin supérieur (43) du convoyeur est associé à au moins un capteur destiné à déterminer, de préférence sans contact, le degré de séchage, l'humidité résiduelle et/ou la température, de préférence la température de surface, du linge.
EP17794896.5A 2016-11-11 2017-11-02 Procédé et dispositif de traitement de linge Active EP3538700B1 (fr)

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DE102016013380 2016-11-11
DE102017001586.4A DE102017001586A1 (de) 2016-11-11 2017-02-17 Verfahren und Vorrichtung zur Behandlung von Wäsche
PCT/EP2017/001271 WO2018086729A1 (fr) 2016-11-11 2017-11-02 Procédé et dispositif de traitement de linge

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DE102016000226A1 (de) * 2016-01-14 2017-07-20 Herbert Kannegiesser Gmbh Vorrichtung zum Mangeln von Wäschestücken
DE102019006868A1 (de) * 2019-09-30 2021-04-01 Herbert Kannegiesser Gmbh Verfahren und Vorrichtung zum Behandeln textiler Gegenstände
EP3798356A1 (fr) * 2019-09-30 2021-03-31 Herbert Kannegiesser GmbH Procédé et dispositif de traitement des objets textiles

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US2265071A (en) * 1939-04-25 1941-12-02 Proctor & Schwartz Inc Process of drying rugs
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US11492740B2 (en) 2022-11-08
US20200056315A1 (en) 2020-02-20
DK3538700T3 (da) 2024-05-21
WO2018086729A1 (fr) 2018-05-17
EP3538700A1 (fr) 2019-09-18
DE102017001586A1 (de) 2018-05-17

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