EP1249263A2 - Procédé pour le fonctionnement d'un dispositif de nettoyage - Google Patents

Procédé pour le fonctionnement d'un dispositif de nettoyage Download PDF

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Publication number
EP1249263A2
EP1249263A2 EP02007976A EP02007976A EP1249263A2 EP 1249263 A2 EP1249263 A2 EP 1249263A2 EP 02007976 A EP02007976 A EP 02007976A EP 02007976 A EP02007976 A EP 02007976A EP 1249263 A2 EP1249263 A2 EP 1249263A2
Authority
EP
European Patent Office
Prior art keywords
working chamber
condenser
solvent
work room
air
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
EP02007976A
Other languages
German (de)
English (en)
Other versions
EP1249263B1 (fr
EP1249263A3 (fr
Inventor
Horst Erbel
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.)
Pero AG P Erbel Maschinen- und Apparatebau
Original Assignee
Pero AG P Erbel Maschinen- und Apparatebau
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
Application filed by Pero AG P Erbel Maschinen- und Apparatebau filed Critical Pero AG P Erbel Maschinen- und Apparatebau
Publication of EP1249263A2 publication Critical patent/EP1249263A2/fr
Publication of EP1249263A3 publication Critical patent/EP1249263A3/fr
Application granted granted Critical
Publication of EP1249263B1 publication Critical patent/EP1249263B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2230/00—Other cleaning aspects applicable to all B08B range
    • B08B2230/01—Cleaning with steam

Definitions

  • the invention relates to a method for operating a cleaning system.
  • Such systems are used to clean workpieces using a solvent in one lockable working chamber.
  • Hydrocarbons are usually used as solvents, Chlorinated hydrocarbons and alcohols are used.
  • Pero-cleaning system 2500 is after Introducing the workpieces to be cleaned into the working chamber, they are closed and closed Vacuum applied to the working chamber to the air in the working chamber largely eliminate.
  • a specified cleaning program then runs, at steam degreasing is also provided. For this purpose, a connection between the Working chamber and a steam container made, which causes solvent vapor in the Working chamber flows.
  • a drying process is started initiated in which a blower to the solvent vapor from the treatment chamber Capacitor promotes.
  • the capacitor consists of a at very low temperatures working refrigeration unit, which, depending on the solvent used, a temperature of -40 ° C to -60 ° C. As a result, the solvent vapor condenses.
  • a cleaning method is already known from DE 195 27 317 A1, in which Solvent vapor is fed to the working chamber after evacuation, after which Cleaning process using a vacuum pump for regeneration in a condenser comes that generated solvent condensate is fed to a reservoir and in the Working chamber for removing the items to be cleaned is ventilated.
  • the object is to design the method in such a way that an air or water cooled condenser can be used.
  • a major advantage of the method according to the invention is that the relative expensive and maintenance-intensive refrigeration units can be dispensed with.
  • To carry out the The process requires fewer and simpler components, which means that Maintenance costs can be reduced and operating costs can be reduced.
  • the inventive method it is possible to use e.g. also To clean plastics so that the CFCs can be replaced. Because of the low The process can also produce solvent emissions without complex filtering and Recovery systems are operated.
  • the cleaning system shown schematically contains a steam generator 1, in which liquid solvent is heated to generate a saturated solvent vapor.
  • a steam generator 1 leads a first steam line 2 with a shut-off valve arranged therein 3 to a pressure-tight lockable working chamber 4, in which the parts to be cleaned are housed during the cleaning process.
  • a Ventilation valve 5 arranged at the working chamber 4 .
  • a second steam line 6 leads from the steam generator 1 with a steam pressure valve 7 to a first part 8a of an air or water-cooled Condenser 8.
  • the working chamber 4 is connected to a first via a first suction line 9 Vacuum pump 10 connected.
  • a valve 11 is arranged in this line 9.
  • the solvent liquefied in part 8a of the two-part condenser 8 overflows a first drain line 21 into a water separator 22. That in part 8b of Condenser 8 liquefied solvent is a condensate separator 39 in the Water separator 22 leading discharge line 21 initiated. From the water separator 22 leads a connecting line 23 with a valve 24 to a pump 25, through which the Solvent distillate via a delivery line 27 in which can be shut off by a further valve 26 a reservoir 28 can be pumped.
  • One of the storage containers 28 carries along a further valve 29 provided supply line 30 for liquid solvent to the Working chamber 4. Via this line 30, the liquid heated in the storage container can Solvents for performing a bath cleaning are introduced into the working chamber 4.
  • the Working chamber 4 from a second drain line 31, which in the between Water separator 22 and the pump 25 arranged connecting line 23 upstream the pump 25 opens.
  • a filter 32 for filtering out Intermediate cleaning residues.
  • a shut-off valve 33 and 34 is arranged in the drain line 31.
  • a third drain line 36 provided with a drain valve 35 provided that also opens into line 23.
  • Between the reservoir 28 and the steam generator 1 also has an overflow line 37 with a shut-off valve 38.
  • the Steam pressure valve 7 is activated when an adjustable steam pressure limit value is exceeded open and closed when the desired vapor pressure is undershot. If that Steam pressure valve 7 is open, a pressure is set in the system that the Equilibrium between evaporator and condensation temperature corresponds. at When using trichlorethylene as a solvent and an air-free system, this pressure is approx. 150 mbar.
  • the steam temperature of trichlorethylene at 150 mbar is only approx. 40 ° C, which e.g. not sufficient to remove polishing pastes that only melt at 55 ° C is.
  • the setting of the steam pressure valve can then e.g. be chosen so that this first opens at 950 mbar, which corresponds to a steam temperature of approx. 83 ° C.
  • About the Steam pressure valve can be used for the solvent used and the respective Optimal steam temperature for the intended use.
  • the cleaning system works as follows:
  • the vacuum pump 10 is first used for the Air extracted from the system. If the system is empty, a continuous one Distillation takes place without the vacuum pump 10 continuing to run.
  • the flows in the Steam generator 1 generates solvent vapor with valve 3 closed via line 6 the part 8a of the condenser 8 and is liquefied there. That from the capacitor 8 escaping condensate enters the water separator 22.
  • the water separated there Distillate is returned to the reservoir 28 by the pump 25 via the line 27 initiated. Excess solvent can in the overflow line 37 Steam pressure vessel 1 are derived. Due to the continuous distillation, a constant cleaning quality guaranteed and an enrichment of the solvent with Oils and greases can be prevented.
  • the valve 11 is closed and the actual cleaning of the Parts are made according to a selectable cleaning program.
  • valve 29 is opened, whereby the Working chamber 4 can be flooded with the solvent heated in the reservoir 28.
  • the solvent is then opened via the valves 33 and 34 and the filter 32 drained and can be pumped back into the Storage container 28 are returned.
  • valve 3 is opened, as a result of which the saturated solvent steam located in the steam generator 1 is fed via line 2 into the working chamber flows.
  • the material to be cleaned is freed of adhering fat or oil by the solvent vapor.
  • the valve 15 is opened, whereby saturated steam from the Working chamber 4 to part 8a of the air- or water-cooled condenser 8 to approximately flows to the condensation pressure of the condenser and is liquefied there. That from the Condenser 8 emerging condensate is via the water separator 22 and the pump 25 fed back to the reservoir 28.
  • a pressure-controlled shut-off valve or Overflow valve are provided, which only opens when the by the vacuum pump 18th possible pressure is reached on the pressure side. This also allows the capacitor supplied residual steam can be brought to a pressure that condensation with a Air or water cooling enabled.
  • the capacitor 8 is divided into two.
  • the capacitor can also be made in one piece if appropriate measures are taken to ensure the different pressure conditions during the different Condensation phases are taken.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
EP02007976A 2001-04-12 2002-04-10 Procédé pour le fonctionnement d'un dispositif de nettoyage Expired - Lifetime EP1249263B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118601 2001-04-12
DE10118601A DE10118601C1 (de) 2001-04-12 2001-04-12 Verfahren zum Betrieb einer Reinigungsanlage

Publications (3)

Publication Number Publication Date
EP1249263A2 true EP1249263A2 (fr) 2002-10-16
EP1249263A3 EP1249263A3 (fr) 2003-01-22
EP1249263B1 EP1249263B1 (fr) 2007-01-24

Family

ID=7681587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007976A Expired - Lifetime EP1249263B1 (fr) 2001-04-12 2002-04-10 Procédé pour le fonctionnement d'un dispositif de nettoyage

Country Status (2)

Country Link
EP (1) EP1249263B1 (fr)
DE (2) DE10118601C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7711472B2 (en) 2004-12-30 2010-05-04 Volkswagen Ag Navigation system for a vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103128074B (zh) * 2011-11-25 2016-06-22 株式会社Ihi 真空清洗装置以及真空清洗方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581113A1 (fr) * 1992-07-17 1994-02-02 S.VE.D.A. S.R.L. Società Veneta Depuratori e Affini Procédé et appareil pour le dégraissage de pièces mécaniques
US5304253A (en) * 1990-09-12 1994-04-19 Baxter International Inc. Method for cleaning with a volatile solvent
DE19527317A1 (de) * 1994-07-27 1996-02-01 Serec Partners Verbessertes Lösungsmittel-Reinigungssystem
DE19939032A1 (de) * 1999-03-24 2000-10-05 Wolf Gmbh Verfahren und Anlage zur Oberflächenbehandlung von Teilen mit einem Lösungsmittel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304253A (en) * 1990-09-12 1994-04-19 Baxter International Inc. Method for cleaning with a volatile solvent
EP0581113A1 (fr) * 1992-07-17 1994-02-02 S.VE.D.A. S.R.L. Società Veneta Depuratori e Affini Procédé et appareil pour le dégraissage de pièces mécaniques
DE19527317A1 (de) * 1994-07-27 1996-02-01 Serec Partners Verbessertes Lösungsmittel-Reinigungssystem
DE19939032A1 (de) * 1999-03-24 2000-10-05 Wolf Gmbh Verfahren und Anlage zur Oberflächenbehandlung von Teilen mit einem Lösungsmittel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7711472B2 (en) 2004-12-30 2010-05-04 Volkswagen Ag Navigation system for a vehicle

Also Published As

Publication number Publication date
DE10118601C1 (de) 2002-08-14
EP1249263B1 (fr) 2007-01-24
EP1249263A3 (fr) 2003-01-22
DE50209322D1 (de) 2007-03-15

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