WO1993016225A1 - Waschverfahren für gewerbliche wäschereien - Google Patents
Waschverfahren für gewerbliche wäschereien Download PDFInfo
- Publication number
- WO1993016225A1 WO1993016225A1 PCT/EP1993/000303 EP9300303W WO9316225A1 WO 1993016225 A1 WO1993016225 A1 WO 1993016225A1 EP 9300303 W EP9300303 W EP 9300303W WO 9316225 A1 WO9316225 A1 WO 9316225A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- concentration
- washing
- detergent
- liquor
- light
- Prior art date
Links
Classifications
-
- 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
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/20—Washing liquid condition, e.g. turbidity
- D06F2103/22—Content of detergent or additives
-
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/42—Detergent or additive supply
-
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/62—Stopping or disabling machine operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/12—Condition responsive control
Definitions
- the invention relates to a washing method for commercial laundries, with different detergents being metered into the liquor in the same washing cycle but in different washing stages.
- Their measurement signal could be used to control the metering, completion of individual process steps, etc., so that a satisfactory washing result is achieved with a minimal use of energy, detergent, water and time.
- Such a determination method would make it possible to maintain optimal temporal concentration profiles of detergents or bleaches in car washes. It would also be possible to optimize the rinsing process with a minimal amount of water in as short a time as possible without too much of the wash liquor remaining in the washed objects.
- Determination methods for the concentration of detergents or bleaches are known. However, these have a number of disadvantages that have prevented widespread use in practice. They are generally based on the measurement of physicochemical parameters, e.g. B. the conductivity, the pH. However, conductivity and pH measurements can be disturbed by the very fluctuating input of electrolytes or acids or bases with the soiled laundry.
- the determination of the concentration of chemical substances in a liquid by flow injection analysis is also known.
- a reagent is added to the liquor in a diluted or undiluted side stream and the concentration is determined photometrically.
- a washing method is known from DE 29 49 254 A1 in which the concentration of a detergent is determined from its fluorescent radiation. If several detergents are used in the same liquor, their concentrations cannot be determined individually.
- the invention is therefore based on the object of providing a method of the type mentioned at the outset which avoids the disadvantages mentioned above.
- detergent or bleaching agents which emit fluorescence radiation of different wavelength ranges when irradiating light, that light is brought via optical waveguides to measuring locations in the fleet, the light emitted there is collected and fed to a receiving and evaluation unit with the same or a second optical waveguide , detects the intensities of the fluorescent radiation in one or more of the different wavelength ranges and uses them to determine the concentrations in the liquor by means of a calibration carried out with the detergents or bleaches used.
- the distance between the measuring location and the light source as well as the receiving and evaluating unit can be arbitrary and nevertheless does not lead to any time delay.
- the method can be used for all fleets, since the optical waveguides are also insensitive to chemically aggressive liquids.
- the use of the method according to the invention is also not restricted with regard to pressure and temperature. Existing systems can be retrofitted without great effort, since only the bushings for the optical fibers have to be created. The process also works maintenance-free. It is generally not necessary to add other substances to the detergent or bleach. When determining the concentration, no reagents need to be added and there are no measuring solutions to be disposed of. It is also advantageous that no intermediate calibrations are required.
- Ultraviolet or visible light is preferably emitted.
- the concentration is thus determined using fluorescent ingredients in the detergent or bleach.
- the concentration of the detergent can advantageously be determined from the fluorescent radiation emitted by the optical brighteners contained in the detergent. On the other hand, it is also possible to determine the concentration from the fluorescent radiation of alkyl benzene sulfonate contained in the detergent.
- the method according to the invention is advantageously also used in car washes. set. These systems work fully continuously or clock-dependent.
- the dirty laundry is fed on conveyor belts or overhead conveyors.
- the washing passes through the individual washing zones, such as wetting, prewashing, clear washing and rinsing, the countercurrent washing principle being used.
- the optical waveguides assigned to the measuring locations be connected to a single light source and a single receiving and evaluation unit via a switch.
- the method according to the invention offers particular advantages when dosing or re-dosing the detergent or bleach into the liquor.
- the metering is preferably controlled with a control device which compares the determined actual concentration with a predetermined target concentration.
- the invention also enables the flushing time to be shortened and the necessary flushing water to be reduced. Therefore, in another embodiment of the invention, the rinsing is ended when the actual concentration determined has dropped below a predetermined target concentration.
- FIG. 1 different sensor systems with which the method according to the invention can be carried out
- FIG. 2 shows a car wash with several measuring locations for determining the concentration
- Figure 4 shows the dependence of the fluorescence intensity on the concentration of an alkylbenzenesulfonate solution.
- fluorescent ingredients already present in the detergent or bleach can be used.
- other fluorescent marking agents which are additionally added.
- such a change can be added to the detergent or bleaching agent to determine the concentration by detecting the change in the polarization state, for.
- B. Sugar can be used to determine the concentration by detecting the change in the polarization state
- the sensor arrangements shown by way of example and schematically in FIG. 1 can be used.
- the light radiated into the measurement solution 1 by the light source and the light emitted can be guided through the same optical waveguide 2 if a semi-transparent mirror 3 is arranged between the light source and the receiving unit.
- the incident and the emitted light can, however, also be guided in different optical waveguides (FIG. 1b).
- FIG. 1c the light emitted by the light source 4 and radiated into the measuring solution 1 via the optical waveguide 2 strikes a reflector 5 and is detected by the receiving unit 6 via a further optical waveguide.
- Such a separation of the outward and return paths of the light is also shown in FIG.
- FIG. 2 shows the Voss-Archi edia car wash with a connected concentration measuring device.
- the laundry 7 is continuously conveyed with a screw 8 from left to right.
- a constantly flowing bath flow moves in the opposite direction to the flow of laundry.
- the concentration of the detergent in the liquor is determined at 4 measuring locations.
- a switch 9 connects the optical waveguides running to and from the measuring points with the light source 4 or the receiving unit 6, so that a light source and detector unit is sufficient even in the case of several measuring locations.
- the fluorescence intensity is plotted in arbitrary units over the detergent concentration in g / 1 in aqueous solution.
- the detergent contains about 0.1% by weight of an optical brightener which fluoresces in the wavelength range from 400 to 700 nm when irradiated with UV light of a wavelength of 366 nm. From the diagram it can be clearly seen that the fluorescent concentration of the liquor can be concluded very well from the measured fluorescence intensity.
- FIG. 4 shows a corresponding dependency of the fluorescence intensity of an aqueous alkylbenzenesulfonate solution.
- the aqueous solution which emitted light in a wavelength range from 400 to 700 nm was irradiated with UV light having a wavelength of 366 nm.
- UV light having a wavelength of 366 nm.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Detergent Compositions (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/290,865 US5536663A (en) | 1992-02-18 | 1993-02-09 | Washing process for institutional laundries |
EP93917393A EP0627024B1 (de) | 1992-02-18 | 1993-02-09 | Waschverfahren für gewerbliche wäschereien |
DE59303584T DE59303584D1 (de) | 1992-02-18 | 1993-02-09 | Waschverfahren für gewerbliche wäschereien |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4204806.0 | 1992-02-18 | ||
DE4204806A DE4204806A1 (de) | 1992-02-18 | 1992-02-18 | Waschverfahren fuer gewerbliche waeschereien |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993016225A1 true WO1993016225A1 (de) | 1993-08-19 |
Family
ID=6451947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1993/000303 WO1993016225A1 (de) | 1992-02-18 | 1993-02-09 | Waschverfahren für gewerbliche wäschereien |
Country Status (5)
Country | Link |
---|---|
US (1) | US5536663A (de) |
EP (1) | EP0627024B1 (de) |
AT (1) | ATE141966T1 (de) |
DE (2) | DE4204806A1 (de) |
WO (1) | WO1993016225A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998020194A1 (de) * | 1996-11-06 | 1998-05-14 | Henkel-Ecolab Gmbh & Co. Ohg | Pressenwasserrückführung |
WO2001012892A1 (de) * | 1999-08-11 | 2001-02-22 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zur steuerung, regelung und dokumentation eines reinigungsvorganges mit einem reinigungsmedium |
WO2007143047A1 (en) * | 2006-06-01 | 2007-12-13 | Ecolab Inc. | Uv fluorometric sensor and method for using the same |
CN108930138A (zh) * | 2017-05-27 | 2018-12-04 | 青岛海尔洗衣机有限公司 | 用于洗衣机的污染物监测模块、洗衣机及其控制方法 |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19714695C2 (de) * | 1997-04-09 | 2001-08-16 | Zangenstein Elektro | Wasch- oder Geschirrspülmaschine mit Trübungssensor |
DE19719422A1 (de) * | 1997-05-12 | 1998-11-19 | Matthias Dipl Ing Lau | Vorrichtung zur Messung von durch Licht angeregter Fluoreszenz und deren Verwendung |
US5922606A (en) | 1997-09-16 | 1999-07-13 | Nalco Chemical Company | Fluorometric method for increasing the efficiency of the rinsing and water recovery process in the manufacture of semiconductor chips |
DE19806559B4 (de) * | 1998-02-17 | 2015-10-29 | BSH Hausgeräte GmbH | Verfahren und Vorrichtung zur Behandlung von Geschirr in Spülmaschinen |
DE29922752U1 (de) * | 1999-12-24 | 2001-05-03 | KD Kleindienst Wäschereitechnik GmbH, 86199 Augsburg | Handhabungssystem für Wäsche |
DE10039408B4 (de) * | 2000-06-16 | 2004-04-08 | Aweco Appliance Systems Gmbh & Co. Kg | Haushaltsmaschine |
DE10135191A1 (de) * | 2001-07-19 | 2003-01-30 | Bsh Bosch Siemens Hausgeraete | Verfahren zum Betreiben eines wasserführenden Haushaltgerätes und Haushaltgerät hierzu |
DE10208214B4 (de) * | 2002-02-26 | 2004-09-30 | BSH Bosch und Siemens Hausgeräte GmbH | Vorrichtung zur Überprüfung der Belagbildung und wasserführendes Gerät |
US20070143934A1 (en) * | 2005-12-22 | 2007-06-28 | Potyrailo Radislav A | Method and apparatus for determining detergent concentration |
US7690061B2 (en) * | 2005-12-22 | 2010-04-06 | General Electric Company | Method and apparatus for controlling a laundering process |
DE102007011119A1 (de) | 2007-03-07 | 2008-09-11 | BSH Bosch und Siemens Hausgeräte GmbH | Waschmaschine mit automatischer Regelung des Waschprozesses |
DE102007016237A1 (de) * | 2007-04-04 | 2008-10-09 | Fink Tec Gmbh | Verfahren zur Bestimmung der Konzentration mindestens eines in einem Nutzfluidum gelösten Stoffes |
DE102010013772A1 (de) * | 2010-03-31 | 2012-02-16 | Henkel Ag & Co. Kgaa | Dosiersystem mit Dosierkontrolle für eine Geschirrspülmaschine |
DE102016003200A1 (de) * | 2016-03-17 | 2017-09-21 | Herbert Kannegiesser Gmbh | Verfahren zur Nassbehandlung von Wäsche |
CN109477846B (zh) * | 2016-06-10 | 2022-03-29 | 联合利华知识产权控股有限公司 | 包括装置的机器和相应的方法 |
DE102016212985A1 (de) | 2016-07-15 | 2018-01-18 | Henkel Ag & Co. Kgaa | Reinigungsmittelidentifikation |
DE102017113372A1 (de) * | 2017-06-19 | 2018-12-20 | Rational Aktiengesellschaft | Verfahren zum Reinigen eines Gargerätes und Reinigungsmittel zur Verwendung in dem Reinigungsverfahren |
DE102017113371A1 (de) * | 2017-06-19 | 2018-12-20 | Rational Aktiengesellschaft | Gargerät mit Garraum und Verfahren zum Reinigen des Gargerätes |
EP3844335A1 (de) | 2018-08-27 | 2021-07-07 | Ecolab USA Inc. | System und technik zur extraktion von partikelhaltigen flüssigkeitsproben ohne filtration |
US11610467B2 (en) | 2020-10-08 | 2023-03-21 | Ecolab Usa Inc. | System and technique for detecting cleaning chemical usage to control cleaning efficacy |
DE112023000400T5 (de) * | 2022-03-01 | 2024-09-12 | ams Sensors Germany GmbH | Flüssigkeitsanalysesystem, wasserführendes haushaltsgerät und verfahren zur bestimmung einer konzentration |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2949254A1 (de) * | 1979-12-07 | 1981-06-25 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren und vorrichtung zum ueberwachen und steuern des programmes, insbesondere des wasserzulaufs und/oder der reinigungs- bzw. spuelmittelzugae bei automatischen wasch- und geschirrspuelmaschinen |
EP0205671A1 (de) * | 1985-06-25 | 1986-12-30 | Unilever N.V. | Industrielle Waschmaschine mit Vorrichtung zum Einstellen des Konzentrationsprodukts |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1317183A (en) * | 1969-05-30 | 1973-05-16 | Unilever Ltd | Cleansing compositions |
US4733798A (en) * | 1986-02-05 | 1988-03-29 | Ecolab Inc. | Method and apparatus for controlling the concentration of a chemical solution |
US4783314A (en) * | 1987-02-26 | 1988-11-08 | Nalco Chemical Company | Fluorescent tracers - chemical treatment monitors |
US4992380A (en) * | 1988-10-14 | 1991-02-12 | Nalco Chemical Company | Continuous on-stream monitoring of cooling tower water |
JPH05215703A (ja) * | 1992-01-21 | 1993-08-24 | Supiide Fuamu Clean Syst Kk | 洗剤濃度の制御方法及び装置 |
-
1992
- 1992-02-18 DE DE4204806A patent/DE4204806A1/de not_active Withdrawn
-
1993
- 1993-02-09 US US08/290,865 patent/US5536663A/en not_active Expired - Fee Related
- 1993-02-09 AT AT93917393T patent/ATE141966T1/de not_active IP Right Cessation
- 1993-02-09 EP EP93917393A patent/EP0627024B1/de not_active Expired - Lifetime
- 1993-02-09 DE DE59303584T patent/DE59303584D1/de not_active Expired - Fee Related
- 1993-02-09 WO PCT/EP1993/000303 patent/WO1993016225A1/de active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2949254A1 (de) * | 1979-12-07 | 1981-06-25 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren und vorrichtung zum ueberwachen und steuern des programmes, insbesondere des wasserzulaufs und/oder der reinigungs- bzw. spuelmittelzugae bei automatischen wasch- und geschirrspuelmaschinen |
EP0205671A1 (de) * | 1985-06-25 | 1986-12-30 | Unilever N.V. | Industrielle Waschmaschine mit Vorrichtung zum Einstellen des Konzentrationsprodukts |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998020194A1 (de) * | 1996-11-06 | 1998-05-14 | Henkel-Ecolab Gmbh & Co. Ohg | Pressenwasserrückführung |
WO2001012892A1 (de) * | 1999-08-11 | 2001-02-22 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zur steuerung, regelung und dokumentation eines reinigungsvorganges mit einem reinigungsmedium |
US6881275B2 (en) | 1999-08-11 | 2005-04-19 | Bsh Bosch Und Siemens Hausgerate Gmbh | Method for the open-loop and closed-loop control and documentation of a cleaning operation with a cleaning medium |
WO2007143047A1 (en) * | 2006-06-01 | 2007-12-13 | Ecolab Inc. | Uv fluorometric sensor and method for using the same |
US7550746B2 (en) | 2006-06-01 | 2009-06-23 | Ecolab Inc. | UV fluorometric sensor and method for using the same |
US7652267B2 (en) | 2006-06-01 | 2010-01-26 | Ecolab Inc. | UV fluorometric sensor and method for using the same |
US7989780B2 (en) | 2006-06-01 | 2011-08-02 | Ecolab Inc. | UV fluorometric sensor and method for using the same |
US8084756B2 (en) | 2006-06-01 | 2011-12-27 | Ecolab Inc. | UV fluorometric sensor and method for using the same |
CN108930138A (zh) * | 2017-05-27 | 2018-12-04 | 青岛海尔洗衣机有限公司 | 用于洗衣机的污染物监测模块、洗衣机及其控制方法 |
Also Published As
Publication number | Publication date |
---|---|
DE59303584D1 (de) | 1996-10-02 |
ATE141966T1 (de) | 1996-09-15 |
EP0627024A1 (de) | 1994-12-07 |
DE4204806A1 (de) | 1993-08-19 |
EP0627024B1 (de) | 1996-08-28 |
US5536663A (en) | 1996-07-16 |
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