EP0476235A1 - Procédé pour le séchage de matériaux après lavage dans une installation de nettoyage, et dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé pour le séchage de matériaux après lavage dans une installation de nettoyage, et dispositif pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0476235A1
EP0476235A1 EP91109865A EP91109865A EP0476235A1 EP 0476235 A1 EP0476235 A1 EP 0476235A1 EP 91109865 A EP91109865 A EP 91109865A EP 91109865 A EP91109865 A EP 91109865A EP 0476235 A1 EP0476235 A1 EP 0476235A1
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EP
European Patent Office
Prior art keywords
vacuum
cleaning chamber
drying
laundry
cleaning
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.)
Withdrawn
Application number
EP91109865A
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German (de)
English (en)
Inventor
Jürgen Höckh
Franz Koppelhuber
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0476235A1 publication Critical patent/EP0476235A1/fr
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    • 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
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • 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
    • B08B3/045—Cleaning involving contact with liquid using perforated containers, e.g. baskets, or racks immersed and agitated in a liquid bath
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/04—Apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • F26B9/08—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements
    • F26B9/082—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements mechanically agitating or recirculating the material being dried

Definitions

  • the invention relates to a method for drying items to be washed, e.g. of mechanically processed workpieces such as turned and stamped parts, which are washed or degreased in the cleaning chamber of a cleaning system by means of washing water mixed with detergents and heated to at least 50 degrees Celsius or with organic solvents such as tetrachloroethane or perchlorethylene, in which method the temperature is approximately the same
  • the washing water which has been heated is subjected to a drying vacuum which is sufficient for intensive drying.
  • the invention further relates to a cleaning system for carrying out the method with a circuit for the washing water in which there is at least one storage container for the washing water or the organic solvents and at least one hermetically lockable cleaning chamber enclosing the laundry, and with a device for drying the laundry which comprises a vacuum pump connectable to the cleaning chamber.
  • the invention has for its object to develop a method or a cleaning system of the type under consideration such that the drying of the laundry can generally be significantly accelerated and that laundry is difficult to dry, which so far can only be dried using organic solvents in a reasonable time could now be dried within a reasonable period of time even when using water with detergents, and the use of organic solvents can thus be significantly restricted or avoided.
  • the thermal energy transferred to the laundry by the washing process can be used for the drying process by suddenly lowering the boiling point of the washing water in the wake of a 'vacuum shock' and thereby at least partially evaporating water films caused by the surfaces of the laundry.
  • the term 'vacuum shock' in the above sense means an abrupt pressure drop in the order of magnitude of at least 300 to 400 mbar.
  • the 'vacuum shock' is also capable of tearing or releasing water droplets from the interior cavities of the laundry.
  • the atmosphere which arises during the vacuum shock in the cleaning chamber and is saturated with water vapor and permeated by water droplets is expediently sucked off directly by the vacuum pump which is already running or is now starting to build up the drying vacuum. Since an optimal effect of the vacuum shock depends on the maximum achievable pressure drop, this should generally take place immediately or before a significant increase in the drying vacuum. If organic solvents are used, the vacuum shock always accelerates the drying process.
  • the vacuum shock can shorten the drying process by 50 to 300%, depending on the type of laundry.
  • the degree of acceleration that can be achieved depends to a large extent on the mass of the laundry and on the structure or size of the individual items. The greatest acceleration is achieved with a relatively large mass of a wash item consisting of relatively large objects. This is especially true when it comes to objects with complex geometry that have cavities or blind holes.
  • the basic features of the cleaning system for carrying out the method according to the invention correspond to the cleaning system known from DE 37 15 168 C2. It comprises a circuit for the washing water mixed with detergents or for the organic solvent, in which circuit there are at least one storage container for the cleaning liquid, a distillation device for renewing it, and at least one cleaning chamber 11 with a laundry carrier 16 which can be rotated or Swing drive 12 can be provided.
  • a spray device arranged above the washware carrier 16 can be provided in the cleaning chamber 11.
  • a vacuum pump 34 which is connected to the cleaning chamber via a line 34a with valve 56.
  • a collecting container 15 is arranged below the cleaning chamber 11. In these, the washing water can be drained via line 15b with valve 14 after each washing process.
  • a chip basket 15a is provided in the collecting container 15 for intercepting the chips, which is periodically emptied.
  • the washing water returns to the washing water circuit from the collecting container 15.
  • the cleaning chamber 11 can be connected to the atmosphere via a ventilation line provided with a valve 36.
  • the cleaning chamber is provided with a cover 11a and is designed for the construction of an underpressure suitable for drying, which is referred to below as a vacuum.
  • the cleaning chamber can be hermetically sealed from both the atmosphere and the cleaning liquid circuit.
  • the cleaning chamber 11 is thus also used as a drying chamber. However, a separate drying chamber can be provided, into which the laundry is transferred after washing.
  • a "cleaning chamber” in the sense of the claims is to be understood as a combination of a “cleaning chamber” and an additional separate drying chamber.
  • the single figure shows only those sections of the wash water circuit that are required to explain the method according to the invention.
  • a steam generator 63 and / or a generator 80 for hot air is also provided in the cleaning system.
  • the steam generator comprises an overpressure container 63b, a heating device 63c and a storage space 63a for superheated steam.
  • the pressure container 63b and the generator 80 for hot air stand with the cleaning chamber 11
  • valve means 64, 65 are provided, with the aid of which said line can be controlled to a predeterminable flow cross-section.
  • the line 69 is closed, superheated steam or hot air is generated, which can have a temperature between 110 "and 150 Celsius.
  • the line 69 is opened. If washing water with detergents is used as Cleaning liquid there is a gradual pressure equalization between the storage space 63a with the superheated water vapor and the cleaning chamber 11.
  • the said pressure equalization during which superheated water vapor flows into the cleaning chamber 11, can take between 10 and 500 seconds It has been shown that such an application of thermal energy means that even items which are extremely difficult to dry, for example small, bent, metallic tubes of 3 mm in diameter and 20 mm in length, can be dried in a portable time or accordingly acceleration of the drying process. This is particularly the case if the water vapor is allowed to flow into the cleaning chamber 11 at a temperature up to 150 Celsius immediately after the vacuum shock has been carried out into the cleaning chamber 11. In the case of the laundry mentioned, particularly good drying results have been achieved by introducing 220 to 400 liters of water vapor with an average temperature of 120 Celsius at an approximately constant inflow speed over a selectable period of time of approximately 30-180 seconds.
  • the chip basket 15a in the collecting container 15 can also be expedient to subject the chip basket 15a in the collecting container 15 to a vacuum shock for drying, before periodic emptying, by connecting between the collecting container 15 and the evacuated vacuum container 71 via line 72, 34, the cleaning chamber 11, a section of the line 17 and the line 15a bring about an instantaneous pressure equalization.
  • the chips can be dried further by building up a drying vacuum with the aid of the vacuum pump 34 via the cleaning chamber and the line 15b.
  • the steam generator 63 provided for a further development of the method according to claims 4 or 5 can also be used for the washing process as such in two process variants (claim 6): Before the actual washing process begins and before the vacuum shock is carried out, heavily soiled material, especially with Greasy residues contaminated laundry degreased that superheated steam is introduced into the cleaning chamber 11. When the water vapor hits the surfaces of the 'cold' laundry, the water vapor condenses. This will wash the laundry with hot condensed water for degreasing. The waste water obtained during degreasing is transferred via line 76 after opening valve 75 for distillation into vacuum container 71, which is provided with a corresponding distillation device. The distillation is carried out with a vacuum. The distillate obtained during the distillation is fed back into the wash water circuit.
  • the vacuum container 71 can be periodically emptied of dirt or grease sludge.
  • the washing process before the start of the vacuum shock is supplemented by a condensate flush, through which residues which are difficult to remove, e.g. Salt residues can be removed from the surface of the laundry.
  • the condensate rinse is achieved by introducing superheated steam into the cleaning chamber 11, which condenses on the items to be washed in the absence of a vacuum shock, so that these are rinsed with hot condensed water. After rinsing, the condensed water is introduced into a collecting container 67 via line 17 and valve 18.
  • the collecting container 67 can be fed periodically by opening the valve 74 by means of the pump 68 into the overpressure container 63b of the steam generator 63.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
EP91109865A 1990-09-19 1991-06-17 Procédé pour le séchage de matériaux après lavage dans une installation de nettoyage, et dispositif pour la mise en oeuvre du procédé Withdrawn EP0476235A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9013241U 1990-09-19
DE9013241U DE9013241U1 (fr) 1990-09-19 1990-09-19

Publications (1)

Publication Number Publication Date
EP0476235A1 true EP0476235A1 (fr) 1992-03-25

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ID=6857631

Family Applications (1)

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EP91109865A Withdrawn EP0476235A1 (fr) 1990-09-19 1991-06-17 Procédé pour le séchage de matériaux après lavage dans une installation de nettoyage, et dispositif pour la mise en oeuvre du procédé

Country Status (2)

Country Link
EP (1) EP0476235A1 (fr)
DE (1) DE9013241U1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268253A (en) * 1992-06-29 1994-01-05 Nsk Ltd Method and apparatus for drying bearing
DE4328199C1 (de) * 1993-08-21 1994-10-13 Duerr Gmbh & Co Verfahren und Einrichtung zum Trocknen eines nach einer Bearbeitung mit einer Reinigungsflüssigkeit gereinigten Werkstücks
EP0630992A1 (fr) * 1993-05-28 1994-12-28 Aichelin Industrieofenbau Ges.m.b.H. Procédé pour nettoyer des pièces métalliques
GB2296556A (en) * 1992-06-29 1996-07-03 Nsk Ltd Method and apparatus for drying objects (e.g. bearings)
CN114345810A (zh) * 2022-01-14 2022-04-15 郦大国 一种紧固件清洗干燥一体装置
WO2022106886A1 (fr) * 2020-11-17 2022-05-27 Martin Ineichen Dispositif et procédé de nettoyage de pièces de fabrication

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9013241U1 (fr) * 1990-09-19 1990-11-22 Hoeckh, Juergen, 7540 Neuenbuerg, De
FR2708876B1 (fr) * 1993-08-13 1995-11-03 Branson Ultrasons Machine de nettoyage-rinçage-séchage de pièces industrielles.
AT108U1 (de) * 1994-04-19 1995-02-27 Duerr Gmbh Duerr Gmbh Anlage zur reinigung von werkstuecken mittels einer organischen reinigungsfluessigkeit
CN104858175B (zh) * 2013-12-26 2017-06-06 蒙宏铅 一种震动干燥装置
DE102014213172A1 (de) * 2014-07-07 2016-01-07 Dürr Ecoclean GmbH Anlage für das Trocknen von Werkstücken
DE102016123490A1 (de) * 2016-12-05 2018-06-07 Innovations-Transfer Uphoff Gmbh & Co. Kg Verfahren und Vorrichtung zur Trocknung im Dampfexplosionsverfahren

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR802618A (fr) * 1935-05-25 1936-09-09 Procédé de séchage par injection de vapeur saturée sèche et extraction de cettevapeur par aspiration sur l'étuve
US3233334A (en) * 1962-09-28 1966-02-08 Pennsalt Chemicals Corp Flash drying apparatus and method utilizing intermittent pulses of drying gas
FR2247388A1 (fr) * 1973-10-12 1975-05-09 Anrep Rene
DE2406347A1 (de) * 1974-02-11 1975-08-14 Textile Processing Ab Verfahren und vorrichtung zum entwaessern und/oder trocknen von textilgut
FR2422915A1 (fr) * 1978-04-13 1979-11-09 Pagnozzi Vincenzo Procede et installation utilisant un systeme de vapeur surchauffee pour le sechage du bois massif
DE3715168C2 (fr) * 1987-05-07 1990-01-18 Hoeckh Metall-Reinigungs-Anlagen Gmbh, 7540 Neuenbuerg, De
DE9013241U1 (fr) * 1990-09-19 1990-11-22 Hoeckh, Juergen, 7540 Neuenbuerg, De

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR802618A (fr) * 1935-05-25 1936-09-09 Procédé de séchage par injection de vapeur saturée sèche et extraction de cettevapeur par aspiration sur l'étuve
US3233334A (en) * 1962-09-28 1966-02-08 Pennsalt Chemicals Corp Flash drying apparatus and method utilizing intermittent pulses of drying gas
FR2247388A1 (fr) * 1973-10-12 1975-05-09 Anrep Rene
DE2406347A1 (de) * 1974-02-11 1975-08-14 Textile Processing Ab Verfahren und vorrichtung zum entwaessern und/oder trocknen von textilgut
FR2422915A1 (fr) * 1978-04-13 1979-11-09 Pagnozzi Vincenzo Procede et installation utilisant un systeme de vapeur surchauffee pour le sechage du bois massif
DE3715168C2 (fr) * 1987-05-07 1990-01-18 Hoeckh Metall-Reinigungs-Anlagen Gmbh, 7540 Neuenbuerg, De
DE9013241U1 (fr) * 1990-09-19 1990-11-22 Hoeckh, Juergen, 7540 Neuenbuerg, De

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268253A (en) * 1992-06-29 1994-01-05 Nsk Ltd Method and apparatus for drying bearing
US5337497A (en) * 1992-06-29 1994-08-16 Nsk Ltd. Method and apparatus for drying bearing
GB2296556A (en) * 1992-06-29 1996-07-03 Nsk Ltd Method and apparatus for drying objects (e.g. bearings)
USRE36796E (en) * 1992-06-29 2000-08-01 Nsk Ltd. Method and apparatus for drying bearing
EP0630992A1 (fr) * 1993-05-28 1994-12-28 Aichelin Industrieofenbau Ges.m.b.H. Procédé pour nettoyer des pièces métalliques
DE4328199C1 (de) * 1993-08-21 1994-10-13 Duerr Gmbh & Co Verfahren und Einrichtung zum Trocknen eines nach einer Bearbeitung mit einer Reinigungsflüssigkeit gereinigten Werkstücks
EP0639747A1 (fr) * 1993-08-21 1995-02-22 Dürr GmbH Procédé et dispositif de séchage d'une pièce de fabrication ayant subi un traitement de nettoyage pour un fluide de nettoyage
WO2022106886A1 (fr) * 2020-11-17 2022-05-27 Martin Ineichen Dispositif et procédé de nettoyage de pièces de fabrication
CN114345810A (zh) * 2022-01-14 2022-04-15 郦大国 一种紧固件清洗干燥一体装置

Also Published As

Publication number Publication date
DE9013241U1 (fr) 1990-11-22

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