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EP0767267A1 - Procédé et dispositif pour le nettoyage à sec des textiles - Google Patents

Procédé et dispositif pour le nettoyage à sec des textiles Download PDF

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Publication number
EP0767267A1
EP0767267A1 EP95117536A EP95117536A EP0767267A1 EP 0767267 A1 EP0767267 A1 EP 0767267A1 EP 95117536 A EP95117536 A EP 95117536A EP 95117536 A EP95117536 A EP 95117536A EP 0767267 A1 EP0767267 A1 EP 0767267A1
Authority
EP
European Patent Office
Prior art keywords
concentration
drying
control
temperature
solvent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95117536A
Other languages
German (de)
English (en)
Other versions
EP0767267B1 (fr
Inventor
Hans-Udo Saal
Ralf Mathias Saal
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.)
Satec GmbH
Original Assignee
Satec GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26138847&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0767267(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Satec GmbH filed Critical Satec GmbH
Priority to EP95117536A priority Critical patent/EP0767267B1/fr
Priority to DE29521540U priority patent/DE29521540U1/de
Priority to JP8253493A priority patent/JPH09173690A/ja
Priority to US08/726,383 priority patent/US5689848A/en
Publication of EP0767267A1 publication Critical patent/EP0767267A1/fr
Application granted granted Critical
Publication of EP0767267B1 publication Critical patent/EP0767267B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
    • D06F43/08—Associated apparatus for handling and recovering the solvents
    • D06F43/086—Recovering the solvent from the drying air current

Definitions

  • the invention relates to a method for dry cleaning textiles which are washed with solvent and dried with warm air, the solvent being recovered after condensation.
  • the invention relates to such a device with washing and drying drum, condenser for the solvent, a heater and a warm air supply for drying, washing and drying in one and the same machine, but alternatively also in two separate machines, are possible.
  • Textile cleaning systems for hydrocarbon solvents (KWL), i.e.
  • WBL hydrocarbon solvents
  • WLL hydrocarbon solvents
  • Textile cleaning systems work in a closed system and, in addition to the actual cleaning, also guarantee the drying of the goods with simultaneous recovery through condensation and regeneration (distillation, adsorption) of the solvent used.
  • Drying in textile cleaning systems is influenced by a large number of changing conditions: these are the type and quantity of goods, as well as the amount of residual solvent remaining in the goods after spinning, the physical properties of the solvent used, the thermal energy supplied, the volume flow of the circulating air. These conditions change from one batch to another.
  • the drying process is delayed, ie the drying times are extended and the machine capacity is reduced.
  • the safety-relevant parameters can be measured easily (O 2 content or temperature).
  • a third security variant is that the solvent concentration in all phases of the drying process is kept in an uncritical concentration range, ie below the LEL. This could circumvent the technical outlay for reducing the O 2 content or the disadvantages of reducing the temperature. However, it is a prerequisite that the solvent concentration can be measured continuously and that it can be controlled under all process conditions.
  • the invention has for its object to avoid the effort previously considered necessary, such as reducing the O 2 content in the dryer air or delayed drying or on the other hand condensation in the measuring systems and to propose a particularly inexpensive method.
  • the concentration of the warm air supply is controlled.
  • the increase in concentration per unit of time is preferably characteristic.
  • Heat is expediently supplied intermittently in order to avoid the increase to excessive solvent concentrations.
  • IR infrared
  • a fuzzy logic controller has proven to be particularly useful for this.
  • Reliable measurement technology has therefore been developed and adapted to the case to be solved and enables continuous concentration measurement during the entire drying process.
  • the factors influencing the course of drying are examined.
  • the influence of disruptive factors on drying is examined.
  • Control variables for the drying process are determined.
  • the measure according to the invention made it possible to develop suitable software for converting the measurement signals into control signals in terms of process engineering.
  • the measure according to the invention was able to guarantee solvent concentrations under all planned and unscheduled process conditions in the range of a maximum of 75% LEL.
  • a modified version of the measuring device (modified e.g. by a heated measuring cell) is installed at the drum outlet, in the area of the highest concentration, by means of which condensation phenomena that have previously occurred can be reliably avoided. This enables continuous concentration measurement from the beginning to the end of drying.
  • the measured value signals are fed to the machine's internal computer control (PLC). Self-check functions automatically check the function of the IR measuring device.
  • PLC programmable logic controller
  • the signals are processed with the help of the determined process engineering influencing factors, and control signals are sent to the machine system (e.g. with regard to steam supply, control of the blower motor, drum drive and door lock, ventilation flaps, valve control of the refrigeration systems, etc.).
  • the computer control takes over the optimal setting of the dry and cool-down times depending on the concentration curve in the drum.
  • the transition from the cool-down phase to the blow-out phase takes place when the difference in the decrease in concentration over time, which first becomes flat and then very flat after the plateau, reaches a certain, very low value.
  • the computer with fuzzy logic makes a temperature and concentration comparison and controls a concentration course over time, the influencing factors such as overloaded, underloaded drums, heavier textiles, in which the solvents are more difficult to escape , lighter textiles where this is easier to do.
  • the controller After the controller has determined a certain concentration curve, a specific conductance is calculated for this concentration curve as a function of the concentration curve and the temperature. It is important here that, since the media are non-polar, electrical measurements are not possible.
  • phase I the maximum permissible temperature of the circulating air during drying, the drying time, the temperature of the cool-down phase (phase II) and the time for blowing out (phase III) are stored in the program.
  • the solvent-containing air first flows through a fluff filter 3, in which the fiber abrasion is filtered off, from there into the solvent condenser 5, in which the solvent and water components are condensed out on cooled surfaces.
  • the solvent / water mixture runs through a water separator into a solvent tank and is thus available for cleaning again.
  • the cooled and discharged air takes up a portion of the previously extracted heat in the condenser of the refrigerator, that is, the preheater 6, then flows through the steam or electrically heated heating register 7 and in turn arrives in the drum.
  • Phase I is automatically ended after the preselected time and phase II (cool-down) is initiated. It cannot be determined whether phase I was too long or too short - the result only becomes apparent after the goods have been unloaded.
  • the goods in the drum are gradually cooled and residual amounts of solvent that are still present are removed.
  • the heat supply from the refrigeration machine (preheater) and the steam supply to the heating register are closed. This phase ends when the preselected temperature ( ⁇ 50 ° C) is reached.
  • the cool down phase Phase III
  • the dryer is blown out in a time-controlled manner (approx. 1 minute). The closed air circuit is opened, which means that room air is drawn in and, after flowing through the dryer, it is led outside.
  • the computer control (CPU / PLC) takes the optimal definition of the drying and cool-down times as a function of the concentration profile in the drum 1/2, which over 20 in association with 19 (temperature measurement ) is determined before.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
EP95117536A 1995-10-05 1995-11-07 Procédé et dispositif pour le nettoyage à sec des textiles Expired - Lifetime EP0767267B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP95117536A EP0767267B1 (fr) 1995-10-05 1995-11-07 Procédé et dispositif pour le nettoyage à sec des textiles
DE29521540U DE29521540U1 (de) 1995-10-05 1995-11-07 Vorrichtung zum Trockenreinigen von Textilien
JP8253493A JPH09173690A (ja) 1995-10-05 1996-09-25 繊維製品のドライクリーニングの方法および装置
US08/726,383 US5689848A (en) 1995-10-05 1996-10-04 Method and apparatus for dry cleaning textiles

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP95115725 1995-10-05
EP95115725 1995-10-05
EP95117536A EP0767267B1 (fr) 1995-10-05 1995-11-07 Procédé et dispositif pour le nettoyage à sec des textiles

Publications (2)

Publication Number Publication Date
EP0767267A1 true EP0767267A1 (fr) 1997-04-09
EP0767267B1 EP0767267B1 (fr) 1999-09-22

Family

ID=26138847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95117536A Expired - Lifetime EP0767267B1 (fr) 1995-10-05 1995-11-07 Procédé et dispositif pour le nettoyage à sec des textiles

Country Status (4)

Country Link
US (1) US5689848A (fr)
EP (1) EP0767267B1 (fr)
JP (1) JPH09173690A (fr)
DE (1) DE29521540U1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001094686A2 (fr) 2000-06-05 2001-12-13 The Procter & Gamble Company Systemes servant a commander un cycle de sechage dans un appareil de sechage
WO2003008698A1 (fr) * 2001-07-19 2003-01-30 Satec Gmbh Procede et dispositif de nettoyage chimique antibacterien de textiles
AT410291B (de) * 1997-08-18 2003-03-25 Walter Sticht Bewegungseinheit
US6673764B2 (en) 2000-06-05 2004-01-06 The Procter & Gamble Company Visual properties for a wash process using a lipophilic fluid based composition containing a colorant
US6828292B2 (en) 2000-06-05 2004-12-07 Procter & Gamble Company Domestic fabric article refreshment in integrated cleaning and treatment processes
US6840963B2 (en) 2000-06-05 2005-01-11 Procter & Gamble Home laundry method
US6855173B2 (en) 2000-06-05 2005-02-15 Procter & Gamble Company Use of absorbent materials to separate water from lipophilic fluid
US6898951B2 (en) 2000-06-05 2005-05-31 Procter & Gamble Company Washing apparatus
US6939837B2 (en) 2000-06-05 2005-09-06 Procter & Gamble Company Non-immersive method for treating or cleaning fabrics using a siloxane lipophilic fluid
US7018423B2 (en) 2000-06-05 2006-03-28 Procter & Gamble Company Method for the use of aqueous vapor and lipophilic fluid during fabric cleaning
US7365043B2 (en) 2003-06-27 2008-04-29 The Procter & Gamble Co. Lipophilic fluid cleaning compositions capable of delivering scent
EP2025803A3 (fr) * 2007-08-14 2009-10-07 BSH Bosch und Siemens Hausgeräte GmbH Procédé de vérification de substances volatiles inflammables dans un séchoir et séchoir adapté
CN104294560A (zh) * 2013-07-02 2015-01-21 海尔集团技术研发中心 干洗机的干衣自动控制方法及干洗机
CN104342890B (zh) * 2013-07-25 2018-09-04 青岛海尔滚筒洗衣机有限公司 家用干洗机及其控制方法
US20220356635A1 (en) * 2021-05-06 2022-11-10 Haier Us Appliance Solutions, Inc. Ambient air dehumidification system for a condenser or heat pump laundry appliance

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6045588A (en) 1997-04-29 2000-04-04 Whirlpool Corporation Non-aqueous washing apparatus and method
IT1300040B1 (it) * 1998-05-15 2000-04-04 Ama Universal Spa Procedimento ed impianto a circuito chiuso per il lavaggio e/o l'asciugatura di prodotti.
US6670317B2 (en) 2000-06-05 2003-12-30 Procter & Gamble Company Fabric care compositions and systems for delivering clean, fresh scent in a lipophilic fluid treatment process
IT1321228B1 (it) * 2000-06-06 2003-12-31 Donini Internat S P A Procedimento per il controllo di sicurezza del ciclo di asciugamentoin macchine lavasecco a idrocarburi e apparecchiatura relativa
ITAN20020005A1 (it) * 2002-01-25 2003-07-25 Gian Vieri Nardini Controllo dell'essicazione nelle macchine lavasecco mediante misura del condensato
US20040117920A1 (en) * 2002-04-22 2004-06-24 General Electric Company Detector for monitoring contaminants in solvent used for dry cleaning articles
US7739891B2 (en) 2003-10-31 2010-06-22 Whirlpool Corporation Fabric laundering apparatus adapted for using a select rinse fluid
US7837741B2 (en) 2004-04-29 2010-11-23 Whirlpool Corporation Dry cleaning method
US8122547B2 (en) * 2004-07-20 2012-02-28 Lg Electronics Inc. Washing machine and method for controlling the same
US7966684B2 (en) * 2005-05-23 2011-06-28 Whirlpool Corporation Methods and apparatus to accelerate the drying of aqueous working fluids
DE102005013053A1 (de) * 2005-05-23 2006-11-30 BSH Bosch und Siemens Hausgeräte GmbH Kondensations-Wäschetrockner
DE102007038369A1 (de) * 2007-08-14 2009-02-19 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Nachweis von flüchtigen, entzündlichen Substanzen in einem Trockner und hierzu geeigneter Trockner
KR101414625B1 (ko) * 2007-11-21 2014-07-03 엘지전자 주식회사 건조기
US7954255B2 (en) * 2008-12-19 2011-06-07 Kohei Sawa Drying apparatus with a solvent-recovery function, and a method for drying solvent recovery

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05277287A (ja) * 1992-03-31 1993-10-26 Sanyo Electric Co Ltd 溶剤回収式乾燥機の運転方法
JPH05285297A (ja) * 1992-04-10 1993-11-02 Sanyo Electric Co Ltd 溶剤回収式乾燥機
US5367787A (en) * 1992-08-05 1994-11-29 Sanyo Electric Co., Ltd. Drying machine

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US3529358A (en) * 1969-06-19 1970-09-22 Terrot Soehne & Co C Procedure for heat treatment of materials
US4811495A (en) * 1988-01-15 1989-03-14 Huang Mijuel E J Laundry drier
US5347726A (en) * 1989-04-19 1994-09-20 Quad/Tech Inc. Method for reducing chill roll condensation
IL107409A (en) * 1992-10-30 1999-03-12 Gen Electric Electronic control system for devices with programmable parameters containing vague logic control that can be programmed and reconfigured
KR950009117B1 (ko) * 1993-01-11 1995-08-14 주식회사금성사 의류건조기의 건조시간 제어장치 및 방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05277287A (ja) * 1992-03-31 1993-10-26 Sanyo Electric Co Ltd 溶剤回収式乾燥機の運転方法
JPH05285297A (ja) * 1992-04-10 1993-11-02 Sanyo Electric Co Ltd 溶剤回収式乾燥機
US5367787A (en) * 1992-08-05 1994-11-29 Sanyo Electric Co., Ltd. Drying machine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 058 (C - 1159) 31 January 1994 (1994-01-31) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 071 (C - 1162) 7 February 1994 (1994-02-07) *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410291B (de) * 1997-08-18 2003-03-25 Walter Sticht Bewegungseinheit
US6839957B1 (en) 1997-08-18 2005-01-11 Walter Sticht Displacement unit
US6939837B2 (en) 2000-06-05 2005-09-06 Procter & Gamble Company Non-immersive method for treating or cleaning fabrics using a siloxane lipophilic fluid
US7018423B2 (en) 2000-06-05 2006-03-28 Procter & Gamble Company Method for the use of aqueous vapor and lipophilic fluid during fabric cleaning
US6673764B2 (en) 2000-06-05 2004-01-06 The Procter & Gamble Company Visual properties for a wash process using a lipophilic fluid based composition containing a colorant
US6828292B2 (en) 2000-06-05 2004-12-07 Procter & Gamble Company Domestic fabric article refreshment in integrated cleaning and treatment processes
US6840963B2 (en) 2000-06-05 2005-01-11 Procter & Gamble Home laundry method
WO2001094686A3 (fr) * 2000-06-05 2002-03-14 Procter & Gamble Systemes servant a commander un cycle de sechage dans un appareil de sechage
US6855173B2 (en) 2000-06-05 2005-02-15 Procter & Gamble Company Use of absorbent materials to separate water from lipophilic fluid
US6898951B2 (en) 2000-06-05 2005-05-31 Procter & Gamble Company Washing apparatus
WO2001094686A2 (fr) 2000-06-05 2001-12-13 The Procter & Gamble Company Systemes servant a commander un cycle de sechage dans un appareil de sechage
US7704937B2 (en) 2000-06-05 2010-04-27 The Procter & Gamble Company Composition comprising an organosilicone/diol lipophilic fluid for treating or cleaning fabrics
US7275400B2 (en) 2000-06-05 2007-10-02 The Procter & Gamble Company Washing apparatus
US7439216B2 (en) 2000-06-05 2008-10-21 The Procter & Gamble Company Composition comprising a silicone/perfluoro surfactant mixture for treating or cleaning fabrics
WO2003008698A1 (fr) * 2001-07-19 2003-01-30 Satec Gmbh Procede et dispositif de nettoyage chimique antibacterien de textiles
US7365043B2 (en) 2003-06-27 2008-04-29 The Procter & Gamble Co. Lipophilic fluid cleaning compositions capable of delivering scent
EP2025803A3 (fr) * 2007-08-14 2009-10-07 BSH Bosch und Siemens Hausgeräte GmbH Procédé de vérification de substances volatiles inflammables dans un séchoir et séchoir adapté
CN104294560A (zh) * 2013-07-02 2015-01-21 海尔集团技术研发中心 干洗机的干衣自动控制方法及干洗机
CN104294560B (zh) * 2013-07-02 2018-02-16 青岛海尔滚筒洗衣机有限公司 干洗机的干衣自动控制方法及干洗机
CN104342890B (zh) * 2013-07-25 2018-09-04 青岛海尔滚筒洗衣机有限公司 家用干洗机及其控制方法
US20220356635A1 (en) * 2021-05-06 2022-11-10 Haier Us Appliance Solutions, Inc. Ambient air dehumidification system for a condenser or heat pump laundry appliance

Also Published As

Publication number Publication date
US5689848A (en) 1997-11-25
DE29521540U1 (de) 1997-06-12
JPH09173690A (ja) 1997-07-08
EP0767267B1 (fr) 1999-09-22

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