EP2279296B1 - Verfahren zum waschen von gewebe in tunnelwaschanlage - Google Patents

Verfahren zum waschen von gewebe in tunnelwaschanlage Download PDF

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Publication number
EP2279296B1
EP2279296B1 EP09731788.7A EP09731788A EP2279296B1 EP 2279296 B1 EP2279296 B1 EP 2279296B1 EP 09731788 A EP09731788 A EP 09731788A EP 2279296 B1 EP2279296 B1 EP 2279296B1
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EP
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Prior art keywords
extractor
rinse
fabric articles
counter flow
water
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EP09731788.7A
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English (en)
French (fr)
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EP2279296A2 (de
EP2279296A4 (de
Inventor
Russell H. Poy
Karl Schubert
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Pellerin Milnor Corp
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Pellerin Milnor Corp
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Priority claimed from US12/400,479 external-priority patent/US7971302B2/en
Priority claimed from US12/400,497 external-priority patent/US20090260162A1/en
Application filed by Pellerin Milnor Corp filed Critical Pellerin Milnor Corp
Publication of EP2279296A2 publication Critical patent/EP2279296A2/de
Publication of EP2279296A4 publication Critical patent/EP2279296A4/de
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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
    • D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow

Definitions

  • the present invention relates to an improved method of washing textiles or fabric articles (e.g. clothing, linen, etc.) in a continuous batch tunnel washer wherein the textiles are moved sequentially from one module or zone to the next module or zone including initial pre-wash zones, a plurality of main wash and pre-rinse zones, and then transferred to an extractor that removes water.
  • One embodiment also includes a pre-rinse zone.
  • the present invention relates to an improved method of washing textiles in a continuous batch tunnel washer wherein a counter flow of wash liquor from one module or zone to the next module or zone is stopped, allowing for a standing bath. Chemicals are then added to separate soil from the goods and suspend the soil in the wash liquor. After a period of time, counter flow is commenced again to remove the suspended soil.
  • the pre-rinsed goods are spray rinsed during extraction of excess water so that soil is not redeposited eliminated graying of the goods.
  • Continuous batch tunnel washer Currently, washing in a commercial environment is conducted with a continuous batch tunnel washer. Such continuous batch tunnel washers are known (e.g., US Patent 5,454,237 ) and are commercially available (www.milnor.com). Continuous batch washers have multiple sectors, zones, stages, or modules including pre-wash, wash, rinse and finishing zone. Commercial continuous batch washing machines utilize a constant counter flow of liquor and a centrifugal extractor or mechanical press for removing most of the liquor from the goods before the goods are dried. Some machines carry the liquid with the goods throughout the particular zone or zones.
  • a final rinse with a continuous batch washer has been performed using a centrifugal extractor or mechanical press.
  • a centrifugal extractor it is typically necessary to rotate the extractor at a first low speed that is designed to remove soil laden water before a final extract.
  • Patents have issued that are directed to batch washers or tunnel washers.
  • the following table provides examples.
  • Document EP 0 141 980 A2 discloses a counter-flow washing machine, and a corresponding method, having a plurality of washing zones axially separated in a washing drum and each of which is provided with a plurality of compartments.
  • the present invention improves the current art by reducing water consumption, improving rinsing capability, reducing the number of components required to perform the function of laundering fabric articles or textiles, and saving valuable floor space in the laundry.
  • the present invention reduces and/or combines zones, sectors, and/or modules, and improves the method of processing the textiles. Rinsing is done in two zones, first in the continuous batch washer itself in an intermediate rinse zone after each main wash zone(s) and a pre-rinse in the last zone(s). A final rinse is then done in a mechanical water removal machine such as a centrifugal extractor or mechanical press.
  • a mechanical water removal machine such as a centrifugal extractor or mechanical press.
  • the counter flow of wash liquor into the modules is stopped allowing for a standing bath.
  • Chemicals are added to separate the soil from the goods and suspend the soil in the wash liquor. If needed, the wash liquor to the separate module bath is raised in temperature to facilitate the release of soil from the goods and activate the chemicals.
  • fresh water is used in the extractor that can be supplied through an atomizing nozzle while the goods are being extracted at high speed (e.g. between about 200 - 1,000 g's). Because the free soil has already been removed in the pre-rinse zone, the spray rinse while extracting will not re-deposit soil on the linen thereby reducing or eliminating graying of the goods. It is not necessary to centrifuge (and drain at a low speed) the free water before the final extract. With the present invention the process time is reduced. The amount of fresh waterrequired compared with conventional processes is reduced.
  • the method of the present invention uses less water than in current art because the counter flow is stopped for part of the cycle.
  • the spray rinse in the centrifugal extractor or mechanical press is more effective than the current practice of draining the free water from the linen and then refilling.
  • the method of the present invention preserves the washing effectiveness of current counter flow washers to wash heavy soil classifications because the amount of soil dilution is the same even though there are less zones, stages, or modules.
  • the present invention provides a higher effective rinsing provided by the spray rinse in the centrifugal extractor because of the pre-rinse.
  • FIGs 1 - 3 shows a schematic diagram of the textile washing apparatus of the present invention, designated generally by the numeral 10.
  • Textile washing apparatus 10 provides a tunnel washer 11 having an inlet end portion 12 and an outlet end portion 13.
  • tunnel washer 11 provides a number of modules 14-18.
  • These modules 14-18 can include a first module 14 and a second module 15 which can be pre-wash modules.
  • the plurality of modules 14-18 can also include modules 16, 17 and 18 which are main wash and pre-rinse modules.
  • the total number of modules 14 - 18 can be more or less than the five (5) shown in Figure 1 .
  • Figure 2 shows an alternate arrangement that employs a tunnel washer 11 having eight (8) modules 14 - 18 and 35 - 37.
  • Figure 3 shows an alternate arrangement that employs a tunnel washer 11 having ten (10) modules 14 - 18 and 35 - 39.
  • the modules 14, 15 can be pre-wash modules.
  • modules 14, 15, 16 can be pre-wash modules.
  • the modules 16, 17, 18 and 35, 36, 37 can be main wash and pre-rinse modules.
  • the modules 17, 18 and 35, 36, 37, 38, 39 can be main wash and pre-rinse modules.
  • a single module 14 could be provided as an alternate option for the pre-wash section.
  • Inlet end portion 12 can provide a hopper 19 that enables the intake of textiles or fabric articles to be washed.
  • fabric articles, textiles, goods to be washed can include clothing, linens, towels, and the like.
  • An extractor 20 is positioned next to the outlet end portion 13 of tunnel washer 11. Flow lines 21, 25, 26, 27, 27A are provided for adding water and/or chemicals to tunnel washer 11 as will be described more fully hereinafter.
  • the process can be described as chemical equilibrium.
  • the flow of water is stopped for a time period sufficient to release soil from the goods such as for example between about 20 seconds and one hundred twenty (120) seconds. However, this time interval can be between about ten (10) and three hundred (300) seconds.
  • water by counter flow is commenced to remove the suspended soil.
  • This rinsing can be termed pre-rinse.
  • a final rinse is then performed in a centrifugal extractor or mechanical press 20.
  • the process of the present invention uses fresh water that can be supplied through an atomizing nozzle for example while the goods are being extracted using the extractor 20.
  • the process of the present invention uses fresh water in the extractor that can be supplied through an atomizing nozzle for example while the goods are being extracted at high speed (e.g. between about 200 and 1,000 g's)using the extractor 20.
  • Flow line 21 transmits water to hopper 19 as indicated by arrow 22.
  • Flow line 21 also carries water to pre-wash module 15 as indicated by arrow 23.
  • Arrow 24 indicates a flow of water from module 14 to module 15 as part of the pre-wash.
  • flow line 25 adds water for counter flow pre-rinse to module 18. Such water added via flow line 25 to module 18 flows in counter flow fashion from module 18 to module 17 to module 16 (see arrow 25a). Arrows 26 and 27 indicate chemical addition to modules 16 and 17 respectively. Chemicals to be added to modules 16 and 17 can include for example detergent, alkalaii, and/or oxidizing agents.
  • flow line 25 adds water for counter flow pre-rinse to module 37.
  • Such water added via flow line 25 to module 37 flows in counter flow fashion from module 38 to module 37, then 36, then 35, then 18, then to module 17 (see arrow 25b).
  • flow line 25 adds water for counter flow pre-rinse to module 38.
  • Such water added via flow line 25 to module 38 flows in counter flow fashion from module 38 to module 37, module 36, module 35, module 18, and module 17 (see arrow 25c).
  • the method of the present invention thus conducts rinsing in two zones. Rinsing is first conducted in the tunnel washer 11 in a pre-rinse zone which occurs after the main wash.
  • pre-wash zones can be 14, 5.
  • the pre-rinse zone and main wash zone can be modules 16, 17, 18.
  • the pre-wash zone can be modules 14 and 15 while the main wash and pre-rinse zones can be modules 16, 17, 18,35, 36 and 37.
  • the pre-wash zone can be modules 14 and 15 while the main wash and pre-rinse zones can be modules 16, 17, 18,35, 36, 37, 38 and 39.
  • the secondrinse zone is the final rinse, which is conducted in the extractor 20 or other mechanical water removal machine such as a mechanical press.
  • the spray rinse while extracting at high speed (between about 200 - 1,000 g's) will not redeposit soil on the linen thereby reducing or eliminating graying of the goods.
  • the process time is thus reduced.
  • the amount of fresh water required compared with conventional processes is reduced.
  • the spray rinse and the centrifugal extractor 20 or mechanical press is more effective than the current practice of draining the free water from the linen and then refilling the extractor 20.
  • An additional benefit of the pre-rinse concept of the present invention is to permit the mechanical press or extractor to have more time extracting the free water. This result follows because the effect of the pre-rinse is to remove most of the suspended soil. The amount of fresh water required for final rinse is thus greatly reduced. The time for rinsing is reduced, allowing this saved cycle time for water removal.
  • the method of the present invention preserves the washing effectiveness of current counter flow washers 11 to wash heavy soil classifications because the amount of soil dilution is the same even though there are fewer zones or stages or modules.
  • the present invention provides a higher effective rinsing provided by the spray rinse (arrow 30) and the centrifugal extractor 20 because of the pre-rinse that is conducted in the modules 16, 17, 18 as discussed above.
  • Water is supplied by tank 43. Spray water flows via flow line 29 and is sprayed via a nozzle at 30 into the centrifugal extractor 20.
  • a higher effective rinsing is provided because of the intermediate and pre-rinse that is conducted in the modules 16, 17, 18 as discussed above in Figure 1 , and the additional modules as discussed above for Figures 2 and 3 .
  • Outlet valves 33 can be provided on each module 14 - 18, 35 - 39 for each figure 1 , 2 , 3 enabling any of the modules 14 - 18 or 35 - 39 to be drained as indicated by arrows 34.
  • Extracted water 31 can be added to water flow line 21.
  • Extracted water 31 can be supplemented with fresh water via flow line 32.
  • Figures 4-10 show an alternate embodiment of the apparatus of the present invention, designated generally by the numeral 40.
  • the textile washing apparatus 40 of the alternate embodiment can provide the same tunnel washer 11 of the preferred embodiment having the modules 14-18,35-39 provided in any one of the embodiments of Figures 1 , 2 , and/or 3.
  • Figure 4 shows the embodiment of Figure 1 having a specially configured starch spray arrangement.
  • a starch tank 41 contains starch that is to be injected into the linen, fabric articles, or clothing contained in extractor 20.
  • Starch for the table linen, clothing, fabric articles is pumped in the first phase of the cycle through a spray nozzle 60 (see Figures 8-10 ).
  • Controlled flow metering can be achieved for example using an inverter controlled flow metering device. The precise amount of starch is thus injected into the linen, fabric articles, clothing or the like while in extractor 20.
  • Excess starch can be removed in a separate tank indicated as starch recovery tank 52 in Figure 4 .
  • Flow line 53 enables recovered starch in tank 52 to be transferred to starch tank 41.
  • Starch tank 41 contains starch that is to be pumped via flow line 42 to nozzle 60 and then to extractor 20.
  • Fresh water tank 43 can also be used to pipe fresh water to extractor 20, flowing through valve 45 to nozzle 60.
  • Valves 44, 45 and 46 are provided for controlling the flow of either starch or fresh water or a combination thereof to nozzle 60 as shown in Figure 4 .
  • Flow line 49 is a flow line that carries extracted water to tank 51 as it is purged from the fabric articles, clothing or linens contained in extractor 20.
  • Starch can be recovered via flow lines 49, 50 to starch recovery tank 52.
  • Valves 44, 47 are provided for valving the flow of starch from tank 41 to extractor 20 via flow line 42.
  • Valve 48 enables tank 41 to be emptied for cleaning or adding new starch.
  • starch spray nozzle 60 is shown in more detail.
  • the spray nozzle 60 can provide an elongated section of conduit or pipe 61.
  • Spray nozzle 60 has an influent end 62 and a discharge end portion 63.
  • Conduit 61 provides an open ended bore 64 for conveying starch from flow line 42 to nozzle 60.
  • Influent end 62 provides a connection 80 for attaching conduit 61 to flow line 42.
  • Figures 6 and 7 illustrate the spray pattern 76 that strikes the wall of drum 57 of extractor 20 as emitted by nozzle 60.
  • extractor 20 provides a drum 57 that provides a chamber 55 having an inlet 56. Clothes, textiles, linens to be sprayed are discharged from tunnel washer 11 via chute 79 into the chamber 55 of extractor 20.
  • the extractor 20 is preferably movable between a loading and discharging position. The loading position is shown in Figures 5 and 6 . In the loading position, clothes transfer from the tunnel washer 11 to the chamber 55 via chute 79.
  • Pumps 54 can be used to aid in the transfer of water from tank 43 or starch from tank 41 into chamber 55 via nozzle 60.
  • the spray nozzle 60 produces a spray pattern 76 that extends substantially across the cylindrical wall 58 of drum 57 as shown in Figures 6 and 7 .
  • Drum 57 thus provides an inlet 56 for enabling clothing, textiles, or other fabric articles to be added to the drum 57 interior 55 and a rear circular wall 59.
  • the spray pattern 76 extends generally from inlet 56 to circular wall 59, thus extending substantially across cylindric wall 58 as shown in Figures 6 and 7 .
  • Arrow 77 in Figure 7 illustrates the width of spray pattern 76 which can be about 16 degrees as an example along cylindrical drum wall 58.
  • a mounting plate 65 can be provided having one or more openings 66 for attaching (for example, bolting) spray nozzle 60 to extractor 20 or to a frame that supports extractor 20.
  • the discharge end portion 63 of spray nozzle 60 provides a nozzle tip 67.
  • the nozzle tip 67 provides a nozzle outlet 70 formed by side plates 71, 72, upper plate 73 and lower plate 74.
  • Atomizing water nozzle 68, 69 are provided next to nozzle outlet 70.
  • the atomizing water nozzle 68 is mounted to upper plate 73.
  • the atomizing water nozzle 69 is mounted to lower plate 74 as shown in Figures 8-10 .
  • Spray nozzle 60 can be equipped with aerating or atomizing nozzles 68, 69 to control the consistency of the starch in the nozzle 60, thus preventing starch build-up which might eventually plug of the nozzle 60.
  • all starch flow lines 42, 60 can be purged with hot water from fresh water tank via flow line 75.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Detergent Compositions (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (15)

  1. Verfahren zum Waschen von Gewebeartikeln in einer durchgehenden Tunnelwaschanlage (11), das folgende Schritte aufweist:
    a) Bereitstellen einer durchgehenden Tunnelwaschanlage (11) mit einem Innenbereich, einem Einlass (12), einem Austritt (13) und einer Mehrzahl von Sektoren, die den Innenbereich in eine Mehrzahl von Zonen (14 bis 18) teilen;
    b) Bewegen der Gewebeartikel von dem Einlass (12) zu ersten und zweiten Sektoren, die Vorwaschzonen (14, 15) sind;
    c) gegenstromiges Fließen von Flüssigkeit in dem Waschanlagen- (11) Innenbereich entlang einer Fließrichtung, die im Allgemeinen entgegengesetzt zu der Bewegungsrichtung der Gewebeartikel ist;
    d) Überführen der Gewebeartikel in eine Hauptwaschzone (16 bis 18);
    e) Hinzufügen einer waschaktiven Substanz zu der Hauptwaschzone (16 bis 18);
    f) Verringern des gegenstromigen Fließens während Schritt "e";
    g) Erhöhen des gegenstromigen Fließens nach Schritt "f"; und
    h) Verwenden einer Schleudervorrichtung (20) zum Entfernen von überschüssigem Wasser nach Schritt "g".
  2. Verfahren nach Anspruch 1, wobei die Zunahme des gegenstromigen Fließens nach Schritt "f" einen ersten Spülvorgang in einer Spülzone (16 bis 18) definiert; und
    i) während des Schritts "h" Spülen der Gewebeartikel, um einen zweiten Spülvorgang zu definieren, optional durch Einsprühen des Spülwassers in die Schleudervorrichtung (20).
  3. Verfahren nach Anspruch 1, wobei in Schritt "f", nachdem die waschaktive Substanz ein chemisches Gleichgewicht erreicht hat, das gegenstromige Fließen erhöht wird, und wobei das gegenstromige Fließen die waschaktive Substanz in Schritt "e" erst nach einem gewählten Zeitintervall wesentlich verwässert; und
    i) während des Schritts "h" Spülen der Gewebeartikel, um einen zweiten Spülvorgang zu definieren.
  4. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Hauptwaschzone (16 bis 18) stromabwärts der Vorwaschzone (14, 15) liegt.
  5. Verfahren nach einem der vorhergehenden Ansprüche, das ferner ein Hinzufügen von Wäschestärke zu den Gewebeartikeln in der Schleudervorrichtung (20) während oder nach Schritt "h" aufweist.
  6. Verfahren nach einem der vorhergehenden Ansprüche, das ferner ein Hinzufügen von Spülwasser zu der Schleudervorrichtung (20) in Schritt "h" aufweist.
  7. Verfahren nach einem der vorhergehenden Ansprüche, wobei das gegenstromige Fließen in Schritt "f" im Wesentlichen gestoppt wird.
  8. Verfahren nach einem der vorhergehenden Ansprüche, das ferner den Schritt des Aufheizens der Hauptwaschzone (16 bis 18) vor Schritt "g" aufweist.
  9. Verfahren nach einem der vorhergehenden Ansprüche, das ferner ein Übertragen der Wärme auf die Hauptwaschzone (16 bis 18) in Schritt "f" aufweist.
  10. Verfahren nach einem der vorhergehenden Ansprüche, wobei das gegenstromige Fließen in Schritt "f" für einen Zeitraum verringert wird, der kürzer als ungefähr fünf Minuten ist; optional kürzer als ungefähr drei Minuten; optional kürzer als ungefähr zwei Minuten; und optional für einen Zeitraum von zwischen ungefähr zwanzig und einhundertzwanzig (20 bis 120) Sekunden.
  11. Verfahren nach Anspruch 10, wobei die Schleudervorrichtung (20) eine Drehtrommel (57) mit einer Seitenwand (58) und einer Stirnwand (59) und eine Sprühvorrichtung (60) hat, die ein Sprühmuster (76) hat, das sich über die Trommelseitenwand (58) erstreckt.
  12. Verfahren nach einem der vorhergehenden Ansprüche, wobei in Schritt "f" die hinzugefügte waschaktive Substanz auf eine Temperatur zwischen ungefähr 60 und 88 Grad Celsius (140 und 190 Grad Fahrenheit) aufgeheizt wird.
  13. Verfahren nach einem der vorhergehenden Ansprüche, wobei sich das gegenstromige Fließen in Schritt "g" durch mehrere der Sektoren (14 bis 18) erstreckt.
  14. Verfahren nach Anspruch 5, wobei die Wäschestärke als eine Lösung aus einer Düse (60) aufgesprüht wird, die sich außerhalb der Schleudervorrichtung (20) befindet.
  15. Verfahren nach Anspruch 14, wobei die Düse (60) ein Muster (76) mit einer Bereite und einer Höhe aufsprüht, die größer als die Breite ist.
EP09731788.7A 2008-04-18 2009-04-16 Verfahren zum waschen von gewebe in tunnelwaschanlage Active EP2279296B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US4612008P 2008-04-18 2008-04-18
US4611808P 2008-04-18 2008-04-18
US12/400,479 US7971302B2 (en) 2008-04-18 2009-03-09 Integrated continuous batch tunnel washer
US12/400,497 US20090260162A1 (en) 2008-04-18 2009-03-09 Continuous batch tunnel washer and method
PCT/US2009/040748 WO2009129362A2 (en) 2008-04-18 2009-04-16 Continuous batch tunnel washer and method

Publications (3)

Publication Number Publication Date
EP2279296A2 EP2279296A2 (de) 2011-02-02
EP2279296A4 EP2279296A4 (de) 2014-03-12
EP2279296B1 true EP2279296B1 (de) 2017-03-15

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EP (1) EP2279296B1 (de)
JP (1) JP5380524B2 (de)
CN (2) CN103696202B (de)
ES (1) ES2620958T3 (de)
WO (1) WO2009129362A2 (de)

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CN103820969B (zh) * 2009-04-22 2018-03-30 佩莱若林·米尔诺公司 连续批量隧道式洗衣机及方法
ES2550185T3 (es) * 2009-06-10 2015-11-05 Pellerin Milnor Corporation Aparato y método de prensa de lavandería
US10161079B2 (en) * 2010-06-03 2018-12-25 Pellerin Milnor Corporation Continuous batch tunnel washer and method
CN102303933A (zh) * 2011-05-05 2012-01-04 北京服装学院 一种洗衣废水再生循环利用方法
JP6312973B2 (ja) * 2011-06-30 2018-04-18 アークロマ・インテレクチュアル・プロパティ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 洗濯方法
CN103882653A (zh) * 2012-12-19 2014-06-25 孙长顺 连续洗涤机构
CN104131441B (zh) * 2014-06-24 2017-02-15 上海百强洗涤设备制造有限公司 一种隧道式洗涤龙的布草洗涤工艺
WO2016054517A1 (en) 2014-10-03 2016-04-07 Pellerin Milnor Corporation Continuous batch tunnel washer and method
WO2017201541A1 (en) * 2016-05-20 2017-11-23 Pellerin Milnor Corporation Combination flow tunnel
WO2019038805A1 (ja) * 2017-08-21 2019-02-28 株式会社アサヒ製作所 連続洗濯機を用いた洗濯方法および連続洗濯機
CN110670294B (zh) * 2019-11-12 2020-11-27 珠海格力电器股份有限公司 一种洗衣机及洗衣方法
CN112323342A (zh) * 2020-06-05 2021-02-05 广东天美洗涤有限公司 一种洗衣龙
CN114345872B (zh) * 2022-01-20 2023-11-17 广西医科大学第一附属医院 一种铅衣清洗设备的使用方法

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Publication number Publication date
JP2011518001A (ja) 2011-06-23
CN102066641A (zh) 2011-05-18
EP2279296A2 (de) 2011-02-02
EP2279296A4 (de) 2014-03-12
ES2620958T3 (es) 2017-06-30
CN102066641B (zh) 2013-11-06
CN103696202B (zh) 2016-01-27
CN103696202A (zh) 2014-04-02
JP5380524B2 (ja) 2014-01-08
WO2009129362A2 (en) 2009-10-22
WO2009129362A3 (en) 2010-02-18

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