EP0973620B1 - Procede et dispositif pour nettoyer ou secher des pieces - Google Patents

Procede et dispositif pour nettoyer ou secher des pieces Download PDF

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Publication number
EP0973620B1
EP0973620B1 EP98930632A EP98930632A EP0973620B1 EP 0973620 B1 EP0973620 B1 EP 0973620B1 EP 98930632 A EP98930632 A EP 98930632A EP 98930632 A EP98930632 A EP 98930632A EP 0973620 B1 EP0973620 B1 EP 0973620B1
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EP
European Patent Office
Prior art keywords
workpieces
treatment container
liquid
cleaning
workpiece carrier
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.)
Expired - Lifetime
Application number
EP98930632A
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German (de)
English (en)
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EP0973620B2 (fr
EP0973620A1 (fr
Inventor
Joachim Schwarz
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.)
MAFAC Ernst Schwarz GmbH and Co KG
Original Assignee
MAFAC Ernst Schwarz GmbH and Co KG
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
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Application filed by MAFAC Ernst Schwarz GmbH and Co KG filed Critical MAFAC Ernst Schwarz GmbH and Co KG
Priority to EP03010727.0A priority Critical patent/EP1342969B1/fr
Publication of EP0973620A1 publication Critical patent/EP0973620A1/fr
Application granted granted Critical
Publication of EP0973620B1 publication Critical patent/EP0973620B1/fr
Publication of EP0973620B2 publication Critical patent/EP0973620B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
    • 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
    • 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
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/18—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/18—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles
    • F26B11/181—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles the receptacle being a foraminous, perforated or open-structured drum or drum-like container, e.g. rotating around a substantially horizontal or vertical axis; the receptacle being multiple perforated drums, e.g. in superimposed arrangement
    • 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
    • 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
    • F26B5/048—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 in combination with heat developed by electro-magnetic means, e.g. microwave energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00

Definitions

  • the present invention relates to an apparatus and method for cleaning and drying workpieces.
  • a device and a method for solvent-free Cleaning workpieces is known from DE 43 17 862 A1.
  • workpieces are placed in a wash tank, the then sealed airtight and creating a vacuum becomes. Due to the negative pressure is via a line connection Liquid is sucked into the wash tank, after which Air is blown into the resulting liquid bath.
  • DE 37 02 675 A1 describes a device for wet cleaning of workpieces, in which by means of a liquid jet a turbulence flow is generated in an immersion bath, in which the workpieces are arranged for cleaning.
  • EP 0 507 294 A1 describes a device for cleaning Workpieces known that a treatment tank and a Workpiece carriers arranged in the treatment container for Includes workpieces.
  • One in the treatment tank arranged spray unit is rotatable around the workpiece carrier arranged and has outlet nozzles for dispensing a Cleaning liquid.
  • a flood pipe is provided around the cleaning container completely or partially with a cleaning liquid to flood.
  • DE 44 46 587 A1 describes a cleaning device a tank in which a batch of cleaning fluid which is discharged through nozzles of a feed line, cleaned can be. There is a negative pressure in the treatment tank produced. It also has a drain pipe in the lower area on which either via a circulation pump to the feed line is connected, or which is pumped into a Storage container leads, which in turn via a pump to the Supply line is connected.
  • the known devices and methods have the disadvantage that that they can be used to clean workpieces with the smallest Surface structures and especially for cleaning very small workpieces as bulk goods in the cleaning container are less effective.
  • the aim of the present invention is therefore a device for cleaning workpieces, with which reliably cleans even the smallest workpieces and of workpieces with filigree surface structures possible is based on aqueous cleaning fluids without additives of solvents works reliably and at which in particular the disadvantages mentioned above do not result.
  • This task is accomplished by a device for cleaning Workpieces achieved that have the features of claim 1 having.
  • the device then has a treatment container, in which a workpiece carrier for receiving the workpieces to be cleaned is arranged.
  • a workpiece carrier for receiving the workpieces to be cleaned is arranged inside the treatment tank, which has an adjustable fluid outlet and in which a vacuum can be generated is a spray unit with outlet nozzles for dispensing cleaning fluid and / or one gaseous medium arranged.
  • the workpiece carrier and / or the spray unit can also be rotated in the treatment container arranged.
  • the device according to the invention enables a reliable Cleaning even the smallest workpieces when removing grease and Oil residues from the smallest recesses and openings.
  • a liquid bath is placed in the treatment tank which generates the workpieces held by the workpiece carrier at least partially surrounds.
  • Vacuum pumps are cleaned using the spray unit and optionally a gaseous medium in the liquid bath and introduced the area above the liquid bath. It occurs in the area above the liquid bath Impact of the cleaning liquid dispensed by the spray unit on the workpieces to spontaneous evaporation, whereby Gas particles due to the energy released in the process and hit the workpieces at high speed achieve remarkable cleaning effect.
  • the controllable liquid drain To maintain an at least approximately constant Liquid level despite continuous introduction of cleaning liquid is the controllable liquid drain provided, one of the newly added per unit of time Amount of liquid corresponding amount of liquid runs off.
  • the liquid drain preferably has a valve, which is opened and closed periodically.
  • the device according to the invention also has the advantage that in addition to cleaning workpieces, they also dry the cleaned workpieces can be used.
  • the spray unit outlet nozzles into the treatment tank introduced, the gas jet striking the workpieces liquid residues adhering to the workpieces removed, that are sucked off.
  • the suction is preferably carried out by the vacuum pump or another, according to further suction device provided in an embodiment of the invention, to a second suction opening of the treatment container connected.
  • the further suction device is especially used immediately after the cleaning process the liquid vapors in the treatment tank vacuum quickly.
  • One by the vacuum pump in the negative pressure generated in the treatment tank accelerates the Evaporation from the workpieces by gas jets removed liquid residues.
  • the treatment container has externally attached Heaters for heating the treatment tank during the drying process.
  • heat radiators in the interior of the treatment container to be arranged during the drying process thermal radiation directed at the workpieces dispense, which is supported by that in the treatment tank existing vacuum an evaporation of on the workpieces adhering liquid residues causes.
  • the heat radiators are rotatable around the workpiece carrier in the Treatment container arranged.
  • the present invention furthermore relates to a Process for cleaning workpieces according to the subordinate Claim 7, which by means of the invention Device is feasible.
  • the cleaning method in one Treatment container in which a workpiece carrier for receiving the workpieces is arranged, generates a liquid bath and in the treatment tank in an area above the liquid bath creates a negative pressure.
  • the workpiece carrier or the workpieces are partly from the liquid bath surround.
  • Cleaning liquid is then applied via outlet nozzles of a spray unit and / or a gaseous medium under excess pressure introduced into the treatment tank, the liquid jets or the rays of the gaseous medium are preferably directed to the workpieces.
  • the workpiece carrier becomes so in the treatment tank during this process moves the workpieces alternately areas above and below a liquid level of the liquid bath happen to be so different the different To be exposed to cleaning processes that are above below and in the border area between the liquid bath and Vacuum area take place to be exposed.
  • the movement of the workpiece carrier can, for example, by periodic Raising and lowering or by rotation.
  • the liquid level is preferably during the cleaning process kept at least approximately constant, to ensure that the workpieces when moving the Workpiece carrier alternating areas above and below of the liquid level.
  • Training the Liquid bath in the treatment tank can be caused by initial Flood the treatment tank to a predetermined Liquid level level take place, this liquid level if additional cleaning fluid flows in approximately via a controllable liquid drain is kept constant.
  • Another way to create The liquid bath consists of closing the liquid drain Keep the beginning of the cleaning process closed until a corresponding amount of cleaning fluid through the spray unit was placed in the treatment tank.
  • Liquid vapors which are in the vacuum area above the Form liquid baths are suctioned off, the suction preferably via one for generating the negative pressure provided vacuum pump takes place.
  • This is advantageously done a rotation of the spray unit during the cleaning process, the outlet nozzles of the spray unit preferably running in opposite directions to a rotational movement of the workpiece carrier move.
  • the cleaning method according to the invention further provides the process steps mentioned above several times in succession to perform, between the individual cleaning processes the liquid bath almost suddenly over the liquid drain is drained. By the resulting Another cleaning effect is created on the workpieces by suction achieved.
  • the draining of the liquid bath is done by Generating an overpressure by means of blown over the spray unit Compressed air accelerates.
  • the cleaning liquid from the treatment tank drain and then via outlet nozzles a gaseous medium under pressure in insert the treatment container.
  • The-itself when it hits of the gaseous jet onto the one adhering to the workpieces Liquid vapors are released from the treatment tank aspirated.
  • the suction is preferably carried out via a vacuum pump, one through the vacuum pump negative pressure generated in the treatment tank evaporation the liquid residue accelerates.
  • the workpiece carrier and / or the spray unit during the drying process rotated in order to achieve permanent mixing on the one hand with bulk goods to reach the workpieces and on the other hand the workpieces exposed to the gaseous jet from all directions.
  • the workpiece carrier during the drying process to keep stationary and the spray unit around the workpiece carrier to rotate.
  • the drying process can be done by heating the treatment container by means of heating devices installed inside or outside be accelerated.
  • a vacuum in one Treatment container in which the workpieces from a workpiece carrier are included to generate and continue in Inside the treatment container, one directed towards the workpieces Generate heat radiation.
  • the energy-rich heat radiation effected, supported by the inside of the container trained negative pressure, evaporation of the workpieces adhering liquid.
  • the Workpiece carrier and / or a device on which the heat radiators are attached To make the workpieces even exposing to heat radiation, the Workpiece carrier and / or a device on which the heat radiators are attached.
  • the liquid vapors are released from the Vacuumed inside the container.
  • the suction is preferably carried out by the vacuum pump required to generate the negative pressure.
  • a gaseous medium under pressure in the treatment tank contributes.
  • this causes liquid residues are blown away from the workpieces, whereby the liquid residues through the vacuum and the supplied Evaporate heat and the resulting liquid vapors over the vacuum pump can be sucked off.
  • Introducing the gaseous medium a temporary weakening of the vacuum, which makes the vacuum pump more powerful Suction effect inside the container causes and what the Liquid vapors are extracted faster from the inside of the container become.
  • FIGS. 1 to 4 wherein Fig. 3 is a sectional view of the device along the in Fig. 1 drawn section line B-B '.
  • Fig. 2 shows the Device cut in the axial direction also in perspective View, where cut surfaces for the sake of Clarity are hatched.
  • the device according to the invention essentially has one cylindrical treatment container 1, which is an adjustable Liquid drain 4 and a first suction opening 7 for connection a vacuum pump to generate a vacuum in the Has inside the treatment container 1. Furthermore is a second suction opening 6 for connecting a further suction device provided that essentially for quick Aspiration of liquid vapors following one with the Device feasible cleaning process is used.
  • the further one Suction device preferably causes a much larger Gas exchange than the vacuum pump, however, is not for Creation of a vacuum suitable.
  • a workpiece carrier 12 arranged for receiving workpieces, the workpiece carrier 12 in the treatment container 1 rotatable by one in Longitudinal axis A-A 'is mounted.
  • the workpiece carrier 12 serves on the one hand to accommodate individual large ones Workpieces and the other to hold baskets 18 with Bulk material, the baskets permeable to liquids and gases are.
  • Is located inside the treatment container 1 furthermore a spray unit 8a, 8b for introducing cleaning liquid or a gaseous medium into the interior of the container.
  • the spray unit consists of those in the figures illustrated embodiments of two arranged in parallel essentially rectangular pipe loops, one of which is for dispensing cleaning fluid and the other is used to deliver a gaseous medium.
  • the two pipe loops 8a, 8b each have a plurality of outlet nozzles directed onto the workpiece carrier. From the two tube loops 8a, 8b formed spray unit also rotatably mounted about the container axis A-A '.
  • Feed opening 16 is provided for loading the treatment container with workpieces a lockable on one side of the treatment container 1 Feed opening 16 is provided.
  • the workpiece holder 12 has a number of rollers that retract the workpieces receiving basket 18 in the treatment container 1 facilitated.
  • Fig. 1 are two different examples Liquid level shown. There is a partial Vacuuming the one above the liquid bath Room 52 by means of those connected to the first suction opening Vacuum pump.
  • the cleaning liquid is introduced under excess pressure in the treatment container 1 essentially results in three different cleaning processes.
  • room 52 above the Liquid bath occurs when the liquid jets strike on the workpieces to explosive spontaneous evaporation of the treatment liquid, whereby it through the energy released to remove impurities and adherent surface and surface contamination.
  • the Pressure of the cleaning liquid which is preferably in the range from 2.0 to 15.0 bar, and that formed in the space 52 Vacuum, preferably between 0.2 to 0.6 bar can be coordinated so that it is only when the Cleaning liquid on the workpieces to evaporate comes.
  • the cleaning liquid is to improve the cleaning effect to a temperature of approx. 60 to 85 ° C heated.
  • the workpieces in the basket 18 alternately the different cleaning processes in room 52 above the Liquid bath and supplied in the liquid bath 50. Furthermore, by rotating the workpiece carrier 12, the workpiece the batch in the basket 18 is permanently mixed, around all workpieces during the cleaning process to suspend cleaning processes attacking the batch from the outside. In room 52 above the liquid bath, the Workpieces by rotating the workpiece carrier 12 from different Directions with those emerging from the outlet nozzles Liquid jets acted upon.
  • the spray unit 8a, 8b can remain stationary, with part of the pipe loops 8a, 8b above and a part below the liquid level 100, 102 is arranged to both in space 52 as well as in the liquid bath 50 cleaning liquid inject.
  • the spray unit 8a, 8b is advantageously counter to the workpiece carrier during the cleaning process 18 rotates about the axis A-A '.
  • the rotation of the workpiece carrier 12 causes in the liquid bath 50 an additional turbulent flow that the Cleaning effect intensified.
  • the rotation of the workpiece carrier 12 permanent gas components in the liquid bath 50 introduced there as gas bubbles of the most varied Achieve cleaning effects on the workpieces.
  • This method proves to be particularly active in cleaning the boundary area between the gas space 52 and the liquid bath 50.
  • this transition area between liquid and gaseous aggregate state there is always spontaneous Evaporation and condensation, taking the cleaning liquid a maximum reduced in the transition state to the gas phase Has surface tension, which penetrates the cleaning liquid even in capillary gaps and recesses of the workpieces.
  • the evaporation of the cleaning liquid in this borderline is by the on the Cleaning jets occurring on the liquid surface are intensified, which is a permanent whirling up of the liquid surface cause.
  • the liquid vapors accumulating in the gas space 52 are through the first suction port 7 by the vacuum pump permanently suctioned off during the cleaning process.
  • the liquid drain 4 shows a not shown in the figures Valve on, which is used to drain the liquid in regular Intervals opened and closed.
  • the permanent one Drainage of cleaning liquid from the liquid bath 50, which is supplied via the spray unit 8a, 8b Cleaning fluid is replaced has the advantage that during the cleaning process permanent dirt that gets in the liquid bath 50 accumulates, is discharged.
  • the cleaning process described is preferably several Performed consecutively, taking between each Process the liquid bath 50 very quickly, at least partially is drained through the liquid drain 4, thereby there is a strong suction on the workpieces, that on the workpieces adhering dirt remnants. Draining the Liquid bath 50 is advantageously produced an overpressure by means of the spray unit Compressed air accelerates.
  • the device according to the invention is also suitable the wet workpieces after the cleaning process dry.
  • the cleaning liquid drained through the liquid drain 4 and the liquid drain 4 closed.
  • a gaseous medium especially air, under pressure in the Blown in treatment tank 1.
  • the on the workpieces adhering liquid residues are torn away by the gas jet and evaporate, forming the liquid vapor preferably by the vacuum pump through the first suction opening 7 is suctioned off.
  • One by the vacuum pump in the Treatment container 1 generated vacuum also accelerates the evaporation of the liquid residue drained from the workpieces.
  • Workpieces are constantly mixed and from different sides charged with the gas jets for drying.
  • the workpiece carrier 18 and the tube loop 8b rotate in opposite directions about the axis A-A 'of the treatment tank.
  • the drying effect is achieved by heating the inside of the container reinforced, whereby the heating by externally attached, here Heaters not shown or by inside the container arranged heat radiators 10a, 10b is generated.
  • the heat radiators are preferably on the workpiece carrier 12 or the workpieces directed and, as in Figs. 1 and 3, as stationary heat radiators 10a stationary arranged on a container inner wall or, as in FIG. 4 shown as a rotatable heat radiator 10b on a parallel arranged to the pipe loops 8a, 8b of the spray unit Pipe loop 8c arranged together with the spray unit 8a, 8b rotatable about the axis A-A 'of the treatment container is stored.
  • the heat radiators 10a, 10b are, as in particular 1 emerges as elongated elements, which are in the axial direction in the treatment tank 1 extend.
  • the temperature of the introduced via the spray unit 8a, 8b gaseous medium depends on the temperature sensitivity the workpieces to be dried between 50 and 200 ° C, the pressure of the introduced gaseous varies accordingly Medium between 0.5 bar and 10 bar, with inside the container a vacuum is formed between 0.2 bar and 0.6 bar is.
  • the device according to the invention also enables another Drying process in which the workpieces are dried by the heat radiation emitted by the heat radiators 10a, 10b in connection with one inside the container the vacuum pump generated vacuum takes place.
  • This procedure is especially for drying components that are not mechanically strong, such as electronic components, suitable when in use of the drying process described above would be destroyed by the high pressure of the gas jets.
  • the liquid vapor that forms inside the container becomes aspirated via the first suction opening 7 and the vacuum pump.
  • a short time is given at defined time intervals gaseous medium, especially air, via one of the pipe loops the spray unit 8a, 8b is blown into the interior of the container, to temporarily increase the pressure inside the container and reduce the vacuum with it.
  • the introduced air is sucked off via the vacuum pump, with this short-term intensified gas exchange the liquid vapors from the treatment tank faster 1 be removed.
  • the air introduced continues to cause that liquid residues are blown away from the workpieces, the faster evaporation of the adhering liquid residues to effect.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Drying Of Solid Materials (AREA)

Claims (13)

  1. Dispositif pour nettoyer des pièces ayant les caractéristiques suivantes :
    un récipient de traitement (1),
    un support de pièces (12) placé dans le récipient de traitement (1),
    une unité de pulvérisation (8a, 8b) installée dans le récipient de traitement (1) qui comporte des buses pour fournir un liquide de nettoyage et/ou un milieu gazeux,
    le support de pièces (12) et/ou l'unité de pulvérisation (8a, 8b) sont montés à rotation dans le récipient de traitement (1),
    dans le récipient de traitement (1) on peut créer une dépression et pour maintenir un niveau de liquide au moins sensiblement constant (100, 102) d'un bain (50) entourant au moins partiellement les pièces, le récipient (1) comporte au moins une sortie de liquide (4), réglable, avec une vanne qui peut être ouverte et fermée périodiquement,
    le récipient de traitement (1) comporte un premier orifice d'aspiration (7) pour brancher une pompe à vide,
    caractérisé par les caractéristiques suivantes :
    le récipient de traitement (1) comporte un second orifice d'aspiration (6).
  2. Dispositif selon la revendication 1,
    caractérisé par
    des radiateurs thermiques (10a, 10b) placés dans le récipient de traitement et orientés vers le support de pièces (12).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    les radiateurs thermiques (10b) sont montés pivotants dans le récipient de traitement (1) par l'intermédiaire d'un dispositif de rotation (8c).
  4. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    le récipient de traitement (1) comporte des dispositifs de chauffage installés à l'extérieur.
  5. Procédé de nettoyage de pièces selon lequel on introduit les pièces dans un récipient de traitement (1) comportant un support de pièces (12) pour recevoir les pièces et dans lequel on introduit un liquide de nettoyage en pression par des buses (8a, 8b) d'une unité de pulvérisation (8a, 8b) dirigée vers la pièce dans le récipient de traitement (1), procédé ayant les étapes suivantes :
    on réalise un bain de liquide (50) qui entoure au moins en partie les pièces dans le récipient de traitement (1),
    on crée une dépression dans un volume de gaz (52) se trouvant au-dessus du bain de liquide (50),
    caractérisé par les étapes suivantes :
    on déplace le support de pièces (12) dans le récipient de traitement (1) de façon que les pièces passent alternativement dans le bain de liquide (50) et dans le volume de gaz (52) au-dessus du bain de liquide (50).
  6. Procédé selon la revendication 5,
    caractérisé en ce qu'
    on maintient le niveau de liquide (100, 102) du bain de liquide (50) au moins sensiblement constant.
  7. Procédé selon la revendication 5 ou 6,
    caractérisé en ce qu'
    on fait tourner le support de pièces (12) autour d'un axe A-A' du récipient de traitement pour faire passer alternativement les pièces dans le bain de liquide (50) et dans le volume de gaz (52).
  8. Procédé selon l'une des revendications 5 à 7,
    caractérisé en ce qu'
    on évacue par aspiration les vapeurs de liquide du volume de gaz (52).
  9. Procédé selon l'une des revendications 5 à 8,
    caractérisé en ce qu'
    on fait tourner l'unité de pulvérisation (8a, 8b) de préférence en sens opposé au support de pièces dans le récipient de traitement (1).
  10. Procédé selon l'une des revendications 5 à 9,
    caractérisé en ce qu'
    on évacue au moins en partie le bain de liquide (50) à des intervalles de temps réguliers.
  11. Procédé selon l'une des revendications 5 à 10, comportant les étapes suivantes pour sécher les pièces :
    on enlève le liquide de nettoyage du récipient de traitement,
    on introduit un milieu gazeux sous pression par des buses de l'unité de pulvérisation (8a, 8b) dans le récipient de traitement (1),
    on aspire des vapeurs de liquide de l'intérieur du récipient de traitement (1),
    on fait tourner l'unité de pulvérisation (8a, 8b) et/ou le support de pièces (12) dans le récipient de traitement (1).
  12. Procédé selon la revendication 11,
    caractérisé en ce qu'
    on crée une dépression dans le récipient de traitement (1).
  13. Procédé selon la revendication 11,
    caractérisé en ce qu'
    on chauffe l'intérieur du récipient de traitement (1) à l'aide de radiateurs thermiques (10a, 10b) installés extérieurement sur le récipient de traitement (1) ou à l'intérieur du récipient de traitement (1), et dirigés vers le support de pièces (12).
EP98930632A 1997-04-09 1998-04-08 Procede et dispositif pour nettoyer ou secher des pieces Expired - Lifetime EP0973620B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03010727.0A EP1342969B1 (fr) 1997-04-09 1998-04-08 Procédé et appareil de séchage de pièces

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19714603A DE19714603C1 (de) 1997-04-09 1997-04-09 Verfahren und Vorrichtung zur Reinigung von Werkstücken
DE19714603 1997-04-09
PCT/DE1998/001006 WO1998045059A1 (fr) 1997-04-09 1998-04-08 Procede et dispositif pour nettoyer ou secher des pieces

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP03010727.0A Division EP1342969B1 (fr) 1997-04-09 1998-04-08 Procédé et appareil de séchage de pièces
EP03010727.0 Division-Into 2003-05-14

Publications (3)

Publication Number Publication Date
EP0973620A1 EP0973620A1 (fr) 2000-01-26
EP0973620B1 true EP0973620B1 (fr) 2003-08-06
EP0973620B2 EP0973620B2 (fr) 2008-06-25

Family

ID=7825878

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98930632A Expired - Lifetime EP0973620B2 (fr) 1997-04-09 1998-04-08 Procede et dispositif pour nettoyer ou secher des pieces
EP03010727.0A Expired - Lifetime EP1342969B1 (fr) 1997-04-09 1998-04-08 Procédé et appareil de séchage de pièces

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EP (2) EP0973620B2 (fr)
AT (1) ATE246552T1 (fr)
AU (1) AU8101098A (fr)
BR (1) BR9808526A (fr)
CA (1) CA2286102C (fr)
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WO (1) WO1998045059A1 (fr)

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CN112923686B (zh) * 2021-01-28 2023-10-03 陕西科技大学 一种干燥机械装置及方法
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BR9808526A (pt) 2000-05-23
AU8101098A (en) 1998-10-30
US6253462B1 (en) 2001-07-03
EP1342969B1 (fr) 2013-05-29
DE59809214D1 (de) 2003-09-11
EP1342969A3 (fr) 2006-06-07
CA2286102C (fr) 2007-09-18
DE19714603C1 (de) 1998-10-29
ATE246552T1 (de) 2003-08-15
EP0973620B2 (fr) 2008-06-25
EP0973620A1 (fr) 2000-01-26
WO1998045059A1 (fr) 1998-10-15
CA2286102A1 (fr) 1998-10-15
EP1342969A2 (fr) 2003-09-10

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