EP1208921A1 - Method and machine with controlled tightness for the manual cleaning of workpieces with industrial solvents - Google Patents

Method and machine with controlled tightness for the manual cleaning of workpieces with industrial solvents Download PDF

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Publication number
EP1208921A1
EP1208921A1 EP00125979A EP00125979A EP1208921A1 EP 1208921 A1 EP1208921 A1 EP 1208921A1 EP 00125979 A EP00125979 A EP 00125979A EP 00125979 A EP00125979 A EP 00125979A EP 1208921 A1 EP1208921 A1 EP 1208921A1
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EP
European Patent Office
Prior art keywords
cleaning
solvent
parts
enclosure
machine
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EP00125979A
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German (de)
French (fr)
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EP1208921B1 (en
Inventor
Jean-Luc Lenglen
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Nash Inovations and Technology Ltd
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Nash Inovations and Technology Ltd
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Priority to DE60017918T priority Critical patent/DE60017918T2/en
Priority to ES00125979T priority patent/ES2238023T3/en
Priority to AT00125979T priority patent/ATE288326T1/en
Priority to EP00125979A priority patent/EP1208921B1/en
Publication of EP1208921A1 publication Critical patent/EP1208921A1/en
Application granted granted Critical
Publication of EP1208921B1 publication Critical patent/EP1208921B1/en
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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
    • B08B3/006—Cabinets or cupboards specially adapted for cleaning articles by hand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B08B15/026—Boxes for removal of dirt, e.g. for cleaning brakes, glove- boxes

Definitions

  • FOREWORD It is not possible to weld, glue, grind, paint or machine mechanical, electrical or electronic parts soiled with oils or greases. To carry out these operations, the parts must therefore be clean.
  • industrial solvents are used, which are preferred to water. Indeed, solvents have obvious advantages over water. First, they have a better degreasing power, they do not require rinsing operations and also do not require significant drying operations, since by definition the solvents are organo-volatile compounds.
  • FIELD OF APPLICATION This invention describes a method and a method for manually cleaning mechanical, electrical or electronic parts ... with industrial solvents. However, the scope of this process exceeds the scope of cleaning since it concerns any implementation involving human manual intervention, with industrial solvents, or any other dangerous material.
  • the manual cleaning operation is done in a closed and "necessarily waterproof" enclosure, with a tightness check during the entire cleaning operation.
  • the enclosure is fitted with two gloves hermetically fixed and allowing operator intervention in the enclosure. So there is no longer no contact, neither dermal, nor inhalation between the operator and the solvent.
  • the operator can perform manual cleaning, only after the cleaning chamber, solvent packaging (drum or keg) and solvent transfer piping (from drum to enclosure either the supply circuit and the barrel enclosure or the solvent return circuit) have been inerted and put under slight pressure or vacuum.
  • This inerting operation consisting in removing the oxidant, that is to say, sufficiently reduce or even eliminate the oxygen content of the air contained in the cleaning chamber, the packaging of the solvent and the solvent transfer circuits.
  • one or more scans of an inert gas will be carried out, more preferably still with nitrogen in the enclosure, packaging and piping. But this inerting can also be carried out by any other operation, for example the vacuum of air.
  • the manual cleaning operation is carried out with solvent deliberately and necessarily cooled, this cooling operation can be carried out via a cold group (mechanical cooling) or by any other means. Cooling has many benefits. For example, cooling allows the solvent to be used at a lower temperature at its flash point temperature. (Flash point temperature means temperature from which the solvent vapors on contact with a flame or spark ignite). It is therefore additional security because the packaging environment is not necessarily inert. Other advantage, the colder the solvent, the lower the vapor pressure, which means that the colder a solvent is the less volatile it is and therefore at least it will have harmful effects on the environment. Of course the temperature of the solvent is continuously monitored by the system.
  • the present invention relates to a method and a method for cleaning mechanical parts, electrical or electronic ... with industrial solvents.
  • the invention relates to an assembly for implementing the above method, characterized in that it includes means for cooling the solvent, means for inerting the cleaning chamber, the packaging of the solvent (drum or keg) and the transfer pipes solvents, means for cleaning, means for disposal and drying, means for recovery solvent vapors, extraction means, means for controlling the pressure in the tank cleaning, solvent packaging and solvent transfer piping and means to put the machine safe in the event of a pressure variation greater than 4 millibars for example compared to the pressure delivered.
  • the assembly includes a box in which is installed packaging of the solvent (drum or keg), a "tight" cleaning chamber, a compartment technique including electrical power, automation board, manufacturing part cold, pneumatic and hydraulic control systems.
  • the box in which the packaging for the solvent is installed is refrigerated. It comprises a retention tank in the event of solvent leaks, a leak recovery system, a leak detection.
  • the sealed cleaning enclosure will be equipped with a window allowing the operator to view his manual cleaning, cleaning tools (brush, spray gun, blower ...), interior lighting, a basket mounted on telescopic slides facilitating the entry or exit of the room or rooms to be cleaned, of a watertight door itself fitted with a system opening lock, waterproof sleeves on which the gloves and bosses allowing gas and liquid transfers.
  • cleaning means any intervention carried out on parts to remove impurities, dirt or foreign bodies on the surface.
  • cleaning can be a degreasing of new parts or used parts.
  • the machine according to the invention is equipped with a nitrogen source leading to the entry of the nitrogen circuit (1) of the machine. It is also equipped with a compressed air source leading to the entrance of the air circuit (2) and of course an electrical supply.
  • the machine according to the invention always includes a cleaning tank (3) on which two are welded sleeves (4) on which the gloves (5) are fixed.
  • the machine according to the invention comprises a refrigerated box (20) inside which will be disposed packaging of the solvent (21). This packaging will be placed on a retention tank (22) equipped with a system for evacuating solvent leaks (23). Inside this box is located the evaporator (24) of the cold group (25), the solvent return valve (26) and its purge system (27).
  • the machine according to the invention always includes a technical compartment inside which finds the compressor and the condenser of the cold group (25), the electrical and automation circuit board (28), the dialogue terminal (29), the pneumatic and hydraulic controls (pump supplying solvent (30) and solvent return pump (31)), the heater (32), the balancing valve (17), the sheath extraction (33).
  • these elements being interconnected to meet the needs of transfer of air, nitrogen, and solvent vapors and the requirements, whether delivered or not, through solenoid valves for air, nitrogen, solvents, exhaust air, nitrogen, solvent vapors, depressurization solenoid valve, pressure sensor (19), solvent supply pipette (34) and the solvent return pipette (35).
  • the cleaning is done with a brush and a spray gun. But it cannot be excluded that it can also be done by immersion, using a ramp sprinkler, the parts mounted or not on a rotating basket.
  • the plate (8) being outside, the part or parts to be cleaned being placed on it, push the plate back inside and close the door (7) of the tank (3). Press the "cleaning" push button appearing on the dialogue terminal (29).
  • the opening of the door (7) of the tank (3) is condemned by the electromagnetic lock (11). Opening of the solvent return valve (26) and opening of the nitrogen intake solenoid valve. Insufflation of nitrogen in the tank (3) for the period defined in the PLC program (28) at the determined pressure and flow rate. As soon as the pressure sensor (19) detects for example 10 millibars, the balancing valve (17) is open to release the excess pressure which is in the tank (3).
  • the nitrogen intake solenoid valve is closed and the balancing valve (17) closes while keeping inside the tank (3) an overpressure for example of 10 millibars.
  • the solvent supply pump (30) and the solvent return pump (31) are in operation while the solvent intake solenoid valve is open.
  • the solvent reaches the brush and spray gun.
  • the operator performs its manual cleaning. When the operator considers that his cleaning is done, he presses the "stop" push button appearing on the dialogue terminal (29).
  • Solvent supply pump stop (30) Solvent inlet solenoid valve closed and opening of the depressurization solenoid valve.
  • the solvent return pump (31) finishes return the solvent to its packaging (21).
  • solvent return (26) then stop the solvent return pump (31).
  • Air intake solenoid valve opens. Insufflation of air heated by heater (32) in the tank at the temperature defined in the program, during the time at defined pressure and flow rate determined. As soon as there is for example a pressure of 10 millibars in the tank (3), the balancing valve (17) opens to release the overpressure. At the end of the timer, the air intake solenoid valve closes, as does the balancing valve (17). Removal of the condemnation of the door opening (7) due to the electromagnetic lock (11). Door opening (7). Parts recovery.
  • the machine does not allow operation without a perfect seal of the enclosure. cleaning, solvent packaging (drum or keg), solvent transfer piping, all as it does not authorize operation in the absence of gloves, or in the presence of gloves but in the pierced or slightly torn state. Indeed, if the gloves are missing or if they were slightly torn or punctured, there would be a loss of pressure in the cleaning tank, as well than in packaging and solvent transfer piping, having the main effect of causing leakage of solvent vapors outside the system. This drop in pressure would be detected by the pressure sensor which at 6 millibars, for example, would bring the machine to safety for lack of tightness. The lifetime of the gloves is taken into account in the system.
  • the machine will go into safety by indicating to the operator "Change gloves”. To allow again using the machine, it will be imperative to change the gloves, this change effective under the control of contactors and the PLC. If the refrigeration cabinet is open, the machine goes into safety by indicating "Housing door open”. The machine also prohibits all solvent leaks, controls the actual presence of air and nitrogen inlets, controls the pressures and air and nitrogen flow rates and, in general, controls the proper functioning of any component; as the solvent temperature.
  • the invention provides a method and a machine for cleaning parts which allow these parts to be cleaned with industrial solvents, without risk to hygiene and operator safety and without harming the environment.

Abstract

The method of washing engineering components in a solvent bath (21) involves cooling the components and providing an inert controlled pressure atmosphere in the washing chamber (3). When the pressure is reduced to at least four millibars, the components are cleaned. If the pressure is higher, the pieces are dried and the chamber and solvent pipes contents are removed using a heated gas. Claims include a bath using a method

Description

AVANT-PROPOS : Il n'est pas possible de souder, coller, meuler, peindre ou usiner des pièces mécaniques, électriques ou électroniques souillées par des huiles ou des graisses. Pour réaliser ces opérations, il faut donc que les pièces soient propres. Pour nettoyer ces pièces mécaniques, électriques ou électroniques, on utilise des solvants industriels, préférés à l'eau. En effet, les solvants ont des avantages évidents par rapport à l'eau. Ils ont d'abord un meilleur pouvoir de dégraissage, ils ne nécessitent pas d'opérations de rinçage et ne nécessitent pas non plus d'opérations de séchage importantes, puisque par définition les solvants sont des composés organo-volatils. FOREWORD: It is not possible to weld, glue, grind, paint or machine mechanical, electrical or electronic parts soiled with oils or greases. To carry out these operations, the parts must therefore be clean. To clean these mechanical, electrical or electronic parts, industrial solvents are used, which are preferred to water. Indeed, solvents have obvious advantages over water. First, they have a better degreasing power, they do not require rinsing operations and also do not require significant drying operations, since by definition the solvents are organo-volatile compounds.

Toutefois, les solvants industriels présentent trois inconvénients majeurs. Ils sont tous plus ou moins nocifs et/ou toxiques, engendrant de fréquentes et diverses maladies professionnelles. Ces maladies vont de la simple allergie, aux cancers, en passant dans certains cas par les atteintes du système nerveux central, les destructions rénales, les destructions testiculaires et autres malformations congénitales. Mais les solvants sont aussi des liquides inflammables et/ou facilement inflammables et/ou explosifs. Enfin, les solvants ont des effets néfastes sur l'Environnement. Certains comme les CFC ( aujourd'hui les HCFC ) sont destructeurs de la couche d'ozone, d'autres sont à l'origine de pluies acides, d'autres encore sont responsables de l'effet de serre.However, industrial solvents have three major drawbacks. They are all more or less harmful and / or toxic, causing frequent and various occupational diseases. These diseases will from simple allergy, to cancer, and in some cases to nervous system damage central, renal destruction, testicular destruction and other congenital malformations. But solvents are also flammable and / or easily flammable and / or explosive liquids. Finally, solvents have harmful effects on the Environment. Some like CFCs (today HCFCs) destroy the ozone layer, others cause acid rain, others still are responsible for the greenhouse effect.

Ces inconvénients sont d'autant plus à prendre en compte que des millions d'individus utilisent tous les jours, sur leurs lieux de travail, des solvants industriels, pour une consommation annuelle de plusieurs millions de tonnes.These drawbacks are all the more to be taken into account since millions of individuals use all of the days, at their workplaces, industrial solvents, for an annual consumption of several million tonnes.

CHAMP D'APPLICATION : Cette invention décrit une méthode et un procédé pour nettoyer manuellement des pièces mécaniques, électriques ou électroniques... avec des solvants industriels. Mais la portée de ce procédé dépasse le cadre du nettoyage puisqu'il concerne toute réalisation entrainant une intervention manuelle humaine, avec des solvants industriels, ou toute autre matière dangereuse. FIELD OF APPLICATION: This invention describes a method and a method for manually cleaning mechanical, electrical or electronic parts ... with industrial solvents. However, the scope of this process exceeds the scope of cleaning since it concerns any implementation involving human manual intervention, with industrial solvents, or any other dangerous material.

ETAT DE L'ART : Depuis toujours les opérations de nettoyage manuel se font dans des récipients à l'intérieur desquels, les opérateurs déversent leurs solvants. Ils y plongent les pièces à nettoyer, puis s'en emparent manuellement et avec l'aide d'un pinceau par exemple procèdent au nettoyage. Il apparaít clairement que les opérateurs sont soumis à un contact dermique avec les solvants ( d'où certaines maladies ) mais respirent également les vapeurs de solvants et ceci à des concentrations importantes, à cause du caractère volatil des solvants ( d'où d'autres types de maladies, en général plus graves ). STATE OF THE ART: Manual cleaning operations have always been carried out in containers inside which operators pour their solvents. They immerse the parts to be cleaned, then grab them manually and with the help of a brush, for example, clean them. It is clear that operators are subject to dermal contact with solvents (hence certain diseases) but also breathe solvent vapors and this at high concentrations, because of the volatile nature of solvents (where others types of illness, usually more serious).

Lors des opérations de nettoyage manuel avec les récipients, la sécurité des opérateurs n'est pas garantie, une inflammation et/ou une explosion du solvant étant toujours possible. En effet, bien souvent des projections d'étincelles provenant d'un poste à souder ou d'un poste à meuler situé près du poste de dégraissage, enflamment le solvant, parfois même l'opérateur lorsque celui-ci a reçu également ( et c'est souvent le cas ) des projections de solvants sur ses vêtements.During manual cleaning operations with the containers, operator safety is not warranty, ignition and / or explosion of the solvent is always possible. Indeed, very often projections of sparks from a welding machine or a grinding machine located near the degreasing, igniting the solvent, sometimes even the operator when it has also received (and this is often the case) solvent splashes on his clothes.

Enfin, ces récipients étant à ciel ouvert, les solvants qu'ils contiennent, s'évaporent dans l'Atmosphère, de manière continue, c'est-à-dire même entre deux opérations de nettoyage.Finally, these receptacles being in the open air, the solvents which they contain, evaporate in the Atmosphere, continuously, that is to say even between two cleaning operations.

Notons qu'en lieu et place des récipients, il existe aujourd'hui, sur le marché du Travail, des fontaines de nettoyage. Le principe d'utilisation est rigoureusement le même que celui des récipients. Mêmes causes, mêmes effets. Ce sont des grands récipients adaptés directement sur l'emballage de solvant ( fût ou tonnelet ) au lieu d'être posé sur le plan de travail.Note that instead of containers, there are today, on the labor market, fountains of cleaning. The principle of use is strictly the same as that of containers. same causes, same effects. These are large containers suitable directly on the solvent packaging (barrel instead of being placed on the work surface.

Enfin, il faut noter l'apparition de systèmes fermés tels que décrits dans le brevet US 5, 107, 876. Finally, note the appearance of closed systems as described in US Patent 5,107,876.

La solution apportée par ce brevet démontre un progrès dans la manière d'utiliser les solvants en manuel, mais ne peut en aucun cas être considéré comme satisfaisant. En effet, fermer l'enceinte de nettoyage permet de diminuer les concentrations de vapeurs de solvants inhalées. Toutefois, chaque solvant a une V.L.E. ( valeur limite d'exposition ) qui s'exprime en ppm ( partie par million ), parfois même en fonction de la dangerosité du solvant considéré, cette V.L.E. s'exprime en ppb ( partie par billion ). Comme son nom l'indique, cette valeur même infime, ne doit pas être dépassée. Or, un gaz occupant par définition tout le volume qui lui est offert doit, pour être contenu, être enfermé dans une enceinte non seulement fermée, mais également étanche. De plus la solution décrite dans le brevet US 5, 107, 876 n'interdit pas une inflammation des vapeurs de solvants.The solution provided by this patent demonstrates progress in the use of solvents in manual, but can in no way be considered satisfactory. Indeed, close the enclosure of cleaning reduces the vapor concentrations of inhaled solvents. However, each solvent has a V.L.E. (exposure limit value) which is expressed in ppm (part per million), sometimes even depending on the dangerousness of the solvent considered, this V.L.E. is expressed in ppb (part by billion). As the name suggests, this very small value should not be exceeded. Now a gas occupying by definition all the volume offered to it must, to be contained, be enclosed in a enclosure not only closed, but also waterproof. In addition, the solution described in US patent 5, 107, 876 does not prohibit the ignition of solvent vapors.

Rappelons que pour qu'il y ait inflammation, il faut la présence simultanée d'une flamme et/ou d'une étincelle ( or la solution de ce brevet présente des systèmes électriques intégrés ), présence de carburant ( ce sont les vapeurs de solvants ) et présence de comburant ( l'oxygène contenu dans l'air ambiant de l'enceinte ) .Remember that for ignition to occur, a flame and / or spark (or the solution of this patent has integrated electrical systems), presence of fuel (these are solvent vapors) and presence of oxidizer (the oxygen contained in the ambient air of the enclosure).

Enfin, le système décrit dans le brevet US 5,107, 876 ne limite pas les émanations de solvants dans l'Atmosphère.Finally, the system described in US Pat. No. 5,107,876 does not limit the emanations of solvents in Atmosphere.

On l'aura donc compris, l'utilisation des solvants est indispensable, mais il faut pouvoir les utiliser correctement, sans être confrontés à leurs inconvénients qui engendrent tout à la fois des maladies professionnelles, des incendies avec parfois mort d'hommes et des effets néfastes sur l'Environnement ( Atmosphère ).It will therefore be understood, the use of solvents is essential, but we must be able to use them correctly, without being confronted with their drawbacks which generate both diseases professional, fires with sometimes death of men and harmful effects on the Environment (Atmosphere).

SOMMAIRE DE L'INVENTION :SUMMARY OF THE INVENTION:

L'opération de nettoyage manuel se fait dans une enceinte fermée et " obligatoirement étanche ", avec un contrôle de l'étanchéité pendant toute l'opération de nettoyage. L'enceinte est équipée de deux gants fixés hermétiquement et permettant l'intervention de l'opérateur dans l'enceinte. Il n'y a donc plus aucun contact, ni dermique, ni inhalatoire entre l'opérateur et le solvant.The manual cleaning operation is done in a closed and "necessarily waterproof" enclosure, with a tightness check during the entire cleaning operation. The enclosure is fitted with two gloves hermetically fixed and allowing operator intervention in the enclosure. So there is no longer no contact, neither dermal, nor inhalation between the operator and the solvent.

L'opérateur peut procéder à son nettoyage manuel, seulement après que l'enceinte de nettoyage, l'emballage du solvant ( fût ou tonnelet ) et les tuyauteries de transfert de solvant ( du fût à l'enceinte soit le circuit d'alimentation et de l'enceinte au fût soit le circuit de retour de solvant ) aient été inertés et mis sous légère pression ou dépression. Cette opération d'inertage consistant à supprimer le comburant, c'est-à-dire diminuer suffisamment, voire même supprimer la teneur en oxygène de l'air contenu dans l'enceinte de nettoyage, l'emballage du solvant et les circuits de transfert du solvant.. Pour ce faire, il sera procédé préférentiellement à un ou plusieurs balayages d'un gaz inerte, plus préférentiellement encore avec de l'azote dans l'enceinte, l'emballage et les tuyauteries. Mais cet inertage peut également être réalisé par toute autre opération, par exemple le vide d'air. Le contrôle de la réalisation et du maintien de l'inertage et de la réalisation et du maintien de la légère pressurisation ou dépressurisation étant assuré pendant toute la durée du nettoyage. Ainsi, il n'y a plus de comburant et donc impossibilité d'inflammation et/ou explosion des vapeurs du solvant et/ou du solvant. De plus l'étanchéité est réelle.The operator can perform manual cleaning, only after the cleaning chamber, solvent packaging (drum or keg) and solvent transfer piping (from drum to enclosure either the supply circuit and the barrel enclosure or the solvent return circuit) have been inerted and put under slight pressure or vacuum. This inerting operation consisting in removing the oxidant, that is to say, sufficiently reduce or even eliminate the oxygen content of the air contained in the cleaning chamber, the packaging of the solvent and the solvent transfer circuits. To do this, one or more scans of an inert gas will be carried out, more preferably still with nitrogen in the enclosure, packaging and piping. But this inerting can also be carried out by any other operation, for example the vacuum of air. Control of the realization and maintenance of inerting and the achievement and maintenance of light pressurization or depressurization being insured for the duration of the cleaning. Thus, there is no more oxidizer and therefore impossibility ignition and / or explosion of solvent vapors and / or solvent. In addition, the seal is real.

L'opération de nettoyage manuel est effectuée avec du solvant délibérément et obligatoirement refroidi, cette opération de refroidissement pouvant être effectuée par l'intermédiaire d'un groupe froid ( refroidissement mécanique ) ou par tout autre moyen. Le refroidissement présente de nombreux avantages. Par exemple le refroidissement permet une utilisation du solvant à une température inférieure à sa température de point d'éclair. ( La température de point d'éclair signifie la température à partir de laquelle les vapeurs du solvant, au contact d'une flamme ou d'une étincelle s'enflamment ). C'est donc une sécurité supplémentaire car l'environnement de l'emballage n'est pas obligatoirement inerté. Autre avantage, au plus un solvant est froid, au plus ses tensions de vapeurs sont basses ce qui signifie qu'au plus un solvant est froid au moins il est volatil et par conséquent au moins il aura d'effets néfastes sur l'Environnement. Bien sûr la température du solvant est continuellement contrôlée par le système. The manual cleaning operation is carried out with solvent deliberately and necessarily cooled, this cooling operation can be carried out via a cold group (mechanical cooling) or by any other means. Cooling has many benefits. For example, cooling allows the solvent to be used at a lower temperature at its flash point temperature. (Flash point temperature means temperature from which the solvent vapors on contact with a flame or spark ignite). It is therefore additional security because the packaging environment is not necessarily inert. Other advantage, the colder the solvent, the lower the vapor pressure, which means that the colder a solvent is the less volatile it is and therefore at least it will have harmful effects on the environment. Of course the temperature of the solvent is continuously monitored by the system.

BREVE DESCRIPTION ET PLANS :BRIEF DESCRIPTION AND PLANS:

La présente invention concerne une méthode et un procédé pour le nettoyage de pièces mécaniques, électriques ou électroniques...avec des solvants industriels.The present invention relates to a method and a method for cleaning mechanical parts, electrical or electronic ... with industrial solvents.

Elle permet l'utilisation des solvants industriels sans qu'il soit porté atteinte à la santé des utilisateurs, sans risque d'incendie et/ou explosion, sans pollution atmosphérique et en limitant les consommations de solvants.It allows the use of industrial solvents without damaging the health of users, without risk of fire and / or explosion, without atmospheric pollution and by limiting consumption solvents.

A cet effet, suivant un premier aspect, l'invention concerne un procédé de nettoyage de pièces mécaniques, électriques ou électroniques... qui est caractérisé en ce qu'il comporte les phases consistant à successivement :

  • Placer la ou les pièces à nettoyer à l'intérieur de l'enceinte de nettoyage.
  • Fermer l'enceinte de nettoyage par l'intermédiaire de sa porte étanche.
  • Appuyer sur le bouton poussoir " Nettoyage " situé sur le terminal de dialogue.
  • Condamnation de l'ouverture de la porte de l'enceinte de nettoyage par le système.
  • Inertage de l'enceinte, l'emballage du solvant ( fût ou tonnelet ), ainsi que les tuyauteries de transfert de solvants, créer une légère surpression ( ou dépression ) dans l'enceinte, l'emballage et les tuyauteries de transfert de solvants, avec mesure par le système de la pression ( ou dépression ) délivrée pour contrôle de l'étanchéité.
  • Contrôle par le système qu'il n'y a pas de trop grande variation quant à la surpression ( ou dépression) créée dans l'enceinte de nettoyage. En cas de variation supérieure à 4 millibars par exemple, arrêt du cycle de nettoyage et mise en sécurité de la machine provoquée par le système.
  • Si la pression délivrée n'a pas varié de au moins 4 millibars par exemple, amener le solvant préalablement refroidi, depuis son emballage jusqu'à l'enceinte de nettoyage en contrôlant qu'il n'y a pas de trop grande variation quant à la surpression ou dépression créée dans l'enceinte de la cuve de nettoyage. En cas de variation supérieure à 4 millibars par exemple, arrêt du cycle de nettoyage et mise en sécurité de la machine provoquée par le système.
  • Si la pression n'a pas varié de au moins 4 millibars par exemple, procéder manuellement à l'opération de nettoyage par l'intermédiaire des outils disposés dans l'enceinte de nettoyage et les gants fixés hermétiquement sur leurs manchons eux-mêmes étanches, sous réserve qu'il n'y ait pas de trop grande variation quant à la surpression ou dépression créée dans la cuve de nettoyage. En cas de variation supérieure à 4 millibars par exemple, arrêt du cycle de nettoyage et mise en sécurité de la machine provoquée par le système.
  • Lorsque le nettoyage sera terminé, appuyer sur le bouton poussoir " Arrêt " situé sur terminal de dialogue.
  • Autorisation du retour du solvant souillé, au fur et à mesure dans son emballage .
  • Désinertage de l'enceinte de nettoyage et en même temps, finir de sécher les pièces par l'injection d'un gaz chaud.
  • Extraction des résidus de vapeurs de solvants jusqu'à l'extérieur de l'atelier, par l'intermédiaire de la gaine d'extraction fixée en sortie de l'enceinte.
  • Si de besoin, piégeage de ces résidus de vapeurs de solvants pour les renvoyer dans l'emballage.
  • Levée de la condamnation de l'ouverture de la porte de l'enceinte de nettoyage.
  • Retirer de l'enceinte les pièces propres et sèches.
To this end, according to a first aspect, the invention relates to a process for cleaning mechanical, electrical or electronic parts, which is characterized in that it comprises the phases consisting of successively:
  • Place the part or parts to be cleaned inside the cleaning enclosure.
  • Close the cleaning chamber through its watertight door.
  • Press the "Cleaning" push button located on the operator terminal.
  • The system opens the door to the cleaning chamber.
  • Inerting the enclosure, the packaging of the solvent (barrel or keg), as well as the solvent transfer pipes, create a slight overpressure (or depression) in the enclosure, the packaging and the solvent transfer pipes, with measurement by the system of the pressure (or vacuum) delivered for checking the tightness.
  • Control by the system that there is not too great variation as for the overpressure (or depression) created in the cleaning enclosure. In case of variation greater than 4 millibars for example, stopping the cleaning cycle and securing the machine caused by the system.
  • If the pressure delivered has not varied by at least 4 millibars for example, bring the solvent, previously cooled, from its packaging to the cleaning chamber, checking that there is not too much variation as to the overpressure or depression created in the enclosure of the cleaning tank. In case of variation greater than 4 millibars for example, stopping the cleaning cycle and securing the machine caused by the system.
  • If the pressure has not varied by at least 4 millibars for example, carry out the cleaning operation manually using the tools placed in the cleaning enclosure and the gloves fixed hermetically on their waterproof sleeves, provided that there is not too great a variation as for the overpressure or depression created in the cleaning tank. In case of variation greater than 4 millibars for example, stopping the cleaning cycle and securing the machine caused by the system.
  • When cleaning is complete, press the "Stop" push button located on the dialogue terminal.
  • Authorization to return the contaminated solvent, progressively in its packaging.
  • Desinerting the cleaning chamber and at the same time, finish drying the parts by injecting hot gas.
  • Extraction of solvent vapor residues up to the outside of the workshop, via the extraction duct fixed at the outlet of the enclosure.
  • If necessary, trapping these solvent vapor residues to return them to the packaging.
  • Lifting of the condemnation of the opening of the door of the cleaning chamber.
  • Remove clean and dry parts from the enclosure.

Suivant un second aspect, l'invention concerne un ensemble pour la mise en oeuvre du procédé ci-dessus, caractérisé en ce qu'il comporte des moyens pour refroidir le solvant, des moyens pour inerter l'enceinte de nettoyage, l'emballage du solvant ( fût ou tonnelet ) et les tuyauteries de transfert de solvants, des moyens pour nettoyer, des moyens pour désinerter et sécher, des moyens de récupération des vapeurs de solvants, des moyens d'extraction, des moyens pour contrôler la pression dans la cuve de nettoyage, l'emballage de solvant et les tuyauteries de transfert de solvants et des moyens pour mettre la machine en sécurité en cas de variation de pression supérieure par exemple à 4 millibars par rapport à la pression délivrée.According to a second aspect, the invention relates to an assembly for implementing the above method, characterized in that it includes means for cooling the solvent, means for inerting the cleaning chamber, the packaging of the solvent (drum or keg) and the transfer pipes solvents, means for cleaning, means for disposal and drying, means for recovery solvent vapors, extraction means, means for controlling the pressure in the tank cleaning, solvent packaging and solvent transfer piping and means to put the machine safe in the event of a pressure variation greater than 4 millibars for example compared to the pressure delivered.

Suivant un mode de réalisation préféré, l'ensemble comporte un caisson dans lequel est installé l'emballage du solvant ( fût ou tonnelet ), une enceinte de nettoyage " étanche ", un compartiment technique renfermant notamment l'alimentation électrique, la platine automatisme, la partie fabrication froid, les asservissements pneumatiques et hydrauliques.According to a preferred embodiment, the assembly includes a box in which is installed packaging of the solvent (drum or keg), a "tight" cleaning chamber, a compartment technique including electrical power, automation board, manufacturing part cold, pneumatic and hydraulic control systems.

Avantageusement, le caisson dans lequel est installé l'emballage du solvant est frigorifique. Il comporte un bac de rétention en cas de fuites de solvants, un système de récupération des fuites, un système de détection des fuites.Advantageously, the box in which the packaging for the solvent is installed is refrigerated. It comprises a retention tank in the event of solvent leaks, a leak recovery system, a leak detection.

Avantageusement encore, l'enceinte de nettoyage étanche sera équipée d'une vitre permettant à l'opérateur de visualiser son nettoyage manuel, d'outils de nettoyage ( pinceau, pistolet d'aspersion, soufflette... ), d'un éclairage intérieur, d'un panier monté sur des glissières téléscopiques facilitant l'entrée ou la sortie de la ou des pièces à nettoyer, d'une porte étanche équipée elle-même d'un système de condamnation d'ouverture, de manchons étanches sur lesquels sont adaptés de façon étanche les gants et, de bossages permettant les transferts de gaz et liquides.Advantageously also, the sealed cleaning enclosure will be equipped with a window allowing the operator to view his manual cleaning, cleaning tools (brush, spray gun, blower ...), interior lighting, a basket mounted on telescopic slides facilitating the entry or exit of the room or rooms to be cleaned, of a watertight door itself fitted with a system opening lock, waterproof sleeves on which the gloves and bosses allowing gas and liquid transfers.

On comprendra bien l'invention à la lecture du complément de description qui va suivre et en référence aux dessins annexés qui font partie de la description et dont les figures sont des figures très schématiques d'une machine établie selon un mode de réalisation préféré pour la mise en oeuvre du procédé selon l'invention.The invention will be clearly understood on reading the additional description which follows and with reference to the accompanying drawings which form part of the description and the figures of which are very figures schematics of a machine established according to a preferred embodiment for the implementation of the method according to the invention.

Tel qu'il est utilisé ici, on entend par nettoyage toute intervention effectuée sur des pièces pour éliminer à la surface de celles-ci des impuretés, salissures ou corps étrangers. Par exemple, un tel nettoyage peut être un dégraissage de pièces neuves ou de pièces usagées.As used here, cleaning means any intervention carried out on parts to remove impurities, dirt or foreign bodies on the surface. For example, such cleaning can be a degreasing of new parts or used parts.

On décrira ci-après le procédé selon l'invention en relation avec une machine établie selon un mode de réalisation préféré, illustré sur les figures 1, 2 et 3 annexées.The method according to the invention will be described below in relation to a machine established according to a mode of preferred embodiment, illustrated in Figures 1, 2 and 3 attached.

La machine selon l'invention est équipée d'une source d'azote aboutissant à l'entrée du circuit d'azote (1) de la machine. Elle est équipée également d'une source d'air comprimé aboutissant à l'entrée du circuit d'air (2) et bien entendu d'une alimentation électrique.The machine according to the invention is equipped with a nitrogen source leading to the entry of the nitrogen circuit (1) of the machine. It is also equipped with a compressed air source leading to the entrance of the air circuit (2) and of course an electrical supply.

La machine selon l'invention toujours comporte une cuve de nettoyage (3) sur laquelle sont soudés deux manchons (4) sur lesquels sont fixés les gants (5). The machine according to the invention always includes a cleaning tank (3) on which two are welded sleeves (4) on which the gloves (5) are fixed.

Sur la face avant de la cuve de nettoyage, il y a une vitre (6) fixée hermétiquement qui permet à l'opérateur de visualiser son nettoyage. Sur le côté une porte (7) permettant l'entrée et la sortie de la ou des pièces à nettoyer, qui seront disposées sur le plateau (8) lui-même monté sur des glissières téléscopiques (9). La porte est dotée d'un joint (10) garantissant l'étanchéité après fermeture et d'un verrou électromagnétique (11).On the front of the cleaning tank, there is a glass (6) hermetically fixed which allows the operator to visualize his cleaning. On the side a door (7) allowing the entry and exit of the or parts to be cleaned, which will be placed on the plate (8) itself mounted on slides telescopic (9). The door has a seal (10) ensuring tightness after closing and a electromagnetic lock (11).

Sur la partie supérieure de la cuve, il y a une autre vitre (12) fixée hermétiquement destinée à l'éclairage de l'intérieur de la cuve de nettoyage. Eclairage (13) situé au-dessus de la vitre et donc à l'extérieur de la cuve.On the upper part of the tank, there is another glass (12) hermetically attached for lighting from inside the cleaning tank. Lighting (13) located above the glass and therefore outside of tank.

Sur le fond de la cuve sont disposés différents bossages pour l'admission air (14a et 14b ), l'admission azote (15), l'admission solvants (16), l'évacuation des surpressions en air, azote et vapeurs de solvants (17), la soupape de sécurité (18) ainsi qu'un bossage pour mesurer les pressions dans la cuve (19). A l'intérieur de la cuve, il y a des outils pour nettoyer et sécher les pièces.On the bottom of the tank are arranged different bosses for the air intake (14a and 14b), the intake nitrogen (15), the intake of solvents (16), the evacuation of excess pressure in air, nitrogen and solvent vapors (17), the safety valve (18) and a boss to measure the pressures in the tank (19). Inside the tank there are tools for cleaning and drying the parts.

La machine selon l'invention comporte un caisson frigorifique (20) à l'intérieur duquel sera disposé l'emballage du solvant (21). Cet emballage sera posé sur un bac de rétention (22) équipé d'un système d'évacuation des fuites de solvants (23). A l'intérieur de ce caisson est implanté l'évaporateur (24) du groupe froid (25), la vanne retour solvant (26) et son système de purge (27).The machine according to the invention comprises a refrigerated box (20) inside which will be disposed packaging of the solvent (21). This packaging will be placed on a retention tank (22) equipped with a system for evacuating solvent leaks (23). Inside this box is located the evaporator (24) of the cold group (25), the solvent return valve (26) and its purge system (27).

La machine selon l'invention toujours comporte un compartiment technique à l'intérieur duquel on retrouve le compresseur et le condenseur du groupe froid (25), la platine électrique et automatisme (28), le terminal de dialogue (29), les asservissements pneumatiques et hydrauliques ( pompe alimentation en solvant (30) et pompe retour du solvant (31) ), le réchauffeur (32), la vanne d'équilibrage (17), la gaine d'extraction (33). Bien entendu, ces éléments étant reliés entre eux pour satisfaire aux besoins de transfert d'air, d'azote, et de vapeurs de solvants et les besoins délivrés ou non par l'intermédiaire des électrovannes d'admission d'air, d'azote, solvants, évacuation d'air, d'azote, de vapeurs de solvants, électrovanne de dépressurisation, le capteur de pressions (19), la pipette d'alimentation en solvant (34) et la pipette de retour solvants (35).The machine according to the invention always includes a technical compartment inside which finds the compressor and the condenser of the cold group (25), the electrical and automation circuit board (28), the dialogue terminal (29), the pneumatic and hydraulic controls (pump supplying solvent (30) and solvent return pump (31)), the heater (32), the balancing valve (17), the sheath extraction (33). Of course, these elements being interconnected to meet the needs of transfer of air, nitrogen, and solvent vapors and the requirements, whether delivered or not, through solenoid valves for air, nitrogen, solvents, exhaust air, nitrogen, solvent vapors, depressurization solenoid valve, pressure sensor (19), solvent supply pipette (34) and the solvent return pipette (35).

Suivant un mode de mise en oeuvre préféré de l'invention, le nettoyage se fait avec un pinceau et un pistolet d'aspersion. Mais il n'est pas à exclure qu'il se fasse aussi par immersion, à l'aide d'une rampe d'aspersion, les pièces montées ou non sur un panier tournant.According to a preferred embodiment of the invention, the cleaning is done with a brush and a spray gun. But it cannot be excluded that it can also be done by immersion, using a ramp sprinkler, the parts mounted or not on a rotating basket.

On décrira maintenant les phases essentielles du procédé selon l'invention en référence au fonctionnement de la machine ci-dessus établie, comme indiqué précédemment, suivant un mode préféré de l'invention.The essential phases of the process according to the invention will now be described with reference to operation of the above machine, as previously indicated, in a preferred mode of the invention.

Le plateau (8) étant à l'extérieur, la ou les pièces à nettoyer étant posées dessus, repousser le plateau à l'intérieur et fermer la porte (7) de la cuve (3). Appuyer sur le bouton poussoir " nettoyage " apparaissant sur le terminal de dialogue (29). L'ouverture de la porte (7) de la cuve (3) est condamnée par le verrou électromagnétique (11). Ouverture de la vanne retour solvant (26) et ouverture de l'électrovanne d'admission azote. Insuflation de l'azote dans la cuve (3) pendant la durée définie dans le programme de l'automate (28) à la pression et au débit déterminés. Dès que le capteur de pressions (19) détecte par exemple 10 millibars, la vanne d'équilibrage (17) est ouverte pour évacuer la surpression qui est dans la cuve (3). A la fin de cette phase d'inertage, l'électrovanne d'admission azote est fermée et la vanne d'équilibrage (17) se ferme en gardant à l'intérieur de la cuve (3) une surpression par exemple de 10 millibars. La pompe d'alimentation solvant (30) et la pompe retour solvant (31) sont en service en même temps que l'électrovanne d'admission solvant est ouverte. Le solvant parvient jusqu'au pinceau et pistolet d'aspersion. L'opérateur procède à son nettoyage manuel. Quand l'opérateur estime que son nettoyage est réalisé, il appuie sur le bouton poussoir " arrêt" apparaissant sur le terminal de dialogue (29). Arrêt de la pompe d'alimentation solvant (30) fermeture de l'électrovanne d'admission solvant et ouverture de l'électrovanne de dépressurisation. The plate (8) being outside, the part or parts to be cleaned being placed on it, push the plate back inside and close the door (7) of the tank (3). Press the "cleaning" push button appearing on the dialogue terminal (29). The opening of the door (7) of the tank (3) is condemned by the electromagnetic lock (11). Opening of the solvent return valve (26) and opening of the nitrogen intake solenoid valve. Insufflation of nitrogen in the tank (3) for the period defined in the PLC program (28) at the determined pressure and flow rate. As soon as the pressure sensor (19) detects for example 10 millibars, the balancing valve (17) is open to release the excess pressure which is in the tank (3). At the end of this inerting phase, the nitrogen intake solenoid valve is closed and the balancing valve (17) closes while keeping inside the tank (3) an overpressure for example of 10 millibars. The solvent supply pump (30) and the solvent return pump (31) are in operation while the solvent intake solenoid valve is open. The solvent reaches the brush and spray gun. The operator performs its manual cleaning. When the operator considers that his cleaning is done, he presses the "stop" push button appearing on the dialogue terminal (29). Solvent supply pump stop (30) Solvent inlet solenoid valve closed and opening of the depressurization solenoid valve.

Pendant un temps défini sur le programme de l'automate (28) la pompe retour solvant (31) termine de retourner le solvant dans son emballage (21). A la fin de cette temporisation fermeture de la vanne retour solvant (26) puis arrêt de la pompe retour solvant (31). Fermeture de l'électrovanne de dépressurisation. Ouverture de l'électrovanne d'admission d'air. Insuflation d'air réchauffé par le réchauffeur (32) dans la cuve à la température définie dans le programme, pendant le temps à la pression et au débit définis déterminés. Dès qu'il y a par exemple une pression de 10 millibars dans la cuve (3), la vanne d'équilibrage (17) s'ouvre pour évacuer la surpression. A la fin de la temporisation, l'électrovanne d'admission d'air se ferme, ainsi que la vanne d'équilibrage (17). Suppression de la condamnation de l'ouverture de la porte (7) dûe au verrou électromagnétique (11). Ouverture de la porte (7). Récupération des pièces.During a time defined in the PLC program (28) the solvent return pump (31) finishes return the solvent to its packaging (21). At the end of this valve closing delay solvent return (26) then stop the solvent return pump (31). Closing of the solenoid valve depressurization. Air intake solenoid valve opens. Insufflation of air heated by heater (32) in the tank at the temperature defined in the program, during the time at defined pressure and flow rate determined. As soon as there is for example a pressure of 10 millibars in the tank (3), the balancing valve (17) opens to release the overpressure. At the end of the timer, the air intake solenoid valve closes, as does the balancing valve (17). Removal of the condemnation of the door opening (7) due to the electromagnetic lock (11). Door opening (7). Parts recovery.

Bien entendu la machine est complétée de façon connue en soi par divers organes de commandes, de vérifications et de sécurité.Of course the machine is supplemented in a manner known per se by various control members, checks and security.

Par exemple, la machine n'autorise pas un fonctionnement sans une parfaite étanchéité de l'enceinte de nettoyage, de l'emballage de solvant ( fût ou tonnelet ), des tuyauteries de transfert de solvants, tout comme elle n'autorise pas le fonctionnement en cas d'absence des gants, ou en cas de présence des gants mais à l'état percés ou légèrement déchirés. En effet, en cas d'absences des gants ou si ceux-ci étaient légèrement déchirés ou percés, il y aurait alors une perte de pression dans la cuve de nettoyage, ainsi que dans l'emballage et les tuyauteries de transferts de solvants, ayant pour principal effet d'entrainer la fuite de vapeurs de solvants à l'extérieur du système. Cette baisse de pression serait détectée par le capteur de pressions qui à 6 millibars par exemple entrainerait la mise en sécurité de la machine pour manque d'étanchéité. La durée de vie des gants est prise en considération dans le système. Passé cette durée de vie, la machine se met en sécurité en indiquant à l'opérateur " Changer gants ". Pour permette à nouveau une utilisation de la machine, il faudra impérativement changer les gants, ce changement effectif étant sous le contrôle de contacteurs et de l'automate. Si le caisson frigorifique est ouvert, la machine se met en sécurité en indiquant " Porte logement fût ouverte ". La machine interdit aussi toutes fuites de solvants, contrôle la présence effective des arrivées d'air et azote, contrôle les pressions et débits d'air et d'azote et, contrôle en général le bon fonctionnement de tout organe qui la compose, ainsi que la température du solvant.For example, the machine does not allow operation without a perfect seal of the enclosure. cleaning, solvent packaging (drum or keg), solvent transfer piping, all as it does not authorize operation in the absence of gloves, or in the presence of gloves but in the pierced or slightly torn state. Indeed, if the gloves are missing or if they were slightly torn or punctured, there would be a loss of pressure in the cleaning tank, as well than in packaging and solvent transfer piping, having the main effect of causing leakage of solvent vapors outside the system. This drop in pressure would be detected by the pressure sensor which at 6 millibars, for example, would bring the machine to safety for lack of tightness. The lifetime of the gloves is taken into account in the system. Past this lifetime, the machine will go into safety by indicating to the operator "Change gloves". To allow again using the machine, it will be imperative to change the gloves, this change effective under the control of contactors and the PLC. If the refrigeration cabinet is open, the machine goes into safety by indicating "Housing door open". The machine also prohibits all solvent leaks, controls the actual presence of air and nitrogen inlets, controls the pressures and air and nitrogen flow rates and, in general, controls the proper functioning of any component; as the solvent temperature.

Il ressort de la description ci-dessus que l'invention fournit un procédé et une machine pour le nettoyage de pièces qui permettent de nettoyer ces pièces avec des solvants industriels, sans risque pour l'hygiène et la sécurité de l'opérateur et, sans nuisance pour l'environnement.It appears from the above description that the invention provides a method and a machine for cleaning parts which allow these parts to be cleaned with industrial solvents, without risk to hygiene and operator safety and without harming the environment.

Bien entendu l'invention n'est pas limitée au mode de mise en oeuvre, au mode de réalisation ou au mode d'application qui ont été décrits. On pourrait au contraire concevoir diverses variantes sans sortir pour autant de son cadre.Of course, the invention is not limited to the mode of implementation, to the embodiment or to the mode. which have been described. We could on the contrary conceive various variants without going out for as much of its frame.

Claims (11)

Procédé pour le nettoyage manuel de pièces mécaniques, électriques ou électroniques..., par utilisation de solvants industriels, caractérisé en ce qu'il comporte les phases consistant à successivement : a. Soumettre le solvant à un traitement de refroidissement. b. Procéder à une opératon d'inertage et de mise en pression ( ou dépressurisation ) de l'enceinte de nettoyage étanche renfermant la ou les pièces à nettoyer, de l'emballage du solvant et des tuyauteries de transferts du solvant avec mesure de la pression délivrée pour contrôle de l'étanchéité. c. Si la pression délivrée n'a pas diminué d'au moins 4 millibars, soumettre la ou les pièces à un traitement de nettoyage d. Si la pression délivrée n'a pas diminué d'au moins 4 millibars, sécher la ou les pièces nettoyées et désinerter l'enceinte de nettoyage et les tuyauteries de tranferts de solvants à l'aide d'un gaz chaud. Process for manual cleaning of mechanical, electrical or electronic parts, etc., using industrial solvents, characterized in that it comprises the phases consisting of successively: at. Subject the solvent to a cooling treatment. b. Carry out an inerting and pressurizing (or depressurization) operation of the sealed cleaning chamber containing the part or parts to be cleaned, the packaging of the solvent and the solvent transfer pipes with measurement of the pressure delivered for tightness control. vs. If the pressure delivered has not decreased by at least 4 millibars, subject the part (s) to a cleaning treatment d. If the pressure delivered has not decreased by at least 4 millibars, dry the cleaned part (s) and desineate the cleaning enclosure and the solvent transfer piping using hot gas. Procédé selon la revendication 1, caractérisé en ce que le cycle de nettoyage est autorisé par le système seulement dans le cas d'une variation de la pression de service inférieure par exemple à 4 millibars.Method according to claim 1, characterized in that the cleaning cycle is authorized by the system only in the case of a variation in the operating pressure less than for example 4 millibars. Procédé selon les revendications 1 et 2, caractérisé en ce que le refroidissement du solvant est réalisé à partir d'un groupe froid mécanique.Process according to Claims 1 and 2, characterized in that the cooling of the solvent is carried out using a mechanical cold group. Procédé selon les revendications 1 à 3, caractérisé en ce que l'inertage est effectué à l'aide d'un gaz neutre.Process according to Claims 1 to 3, characterized in that the inerting is carried out using a neutral gas. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que le gaz neutre est de l'azote.Method according to one of claims 1 to 4, characterized in that the neutral gas is nitrogen. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le gaz chaud est de l'air.Method according to one of claims 1 to 5, characterized in that the hot gas is air. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que le nettoyage est effectué à l'aide d'outils tels que pinceaux, pistolets d'aspersion ou soufflettes ou par immersion et/ou aspersion, à l'aide d'un liquide de nettoyage.Method according to one of claims 1 to 6, characterized in that the cleaning is carried out using tools such as brushes, spray guns or blowers or by immersion and / or spraying, using cleaning fluid. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que le produit de nettoyage est un liquide à environ -10°C et/ou le gaz chaud est insuflé à environ 45°C à 50°C.Method according to one of Claims 1 to 7, characterized in that the cleaning product is a liquid at approximately -10 ° C and / or the hot gas is blown at approximately 45 ° C to 50 ° C. Machine pour la mise en oeuvre du procédé selon l'une des revendications 1 à 8, caractérisée en ce qu'elle comporte des moyens (24), (25) pour refroidir le solvant de nettoyage, des moyens (14a), (14b), (15), (17), (18) et (19) pour procéder à l'inertage et à la mise en pression, des moyens (16), (26), (27), (30), (31), (34) et (35) pour soumettre les pièces à un traitement de nettoyage, des moyens (14b) et (32) pour sécher les pièces et désinerter l'enceinte de nettoyage. Machine for carrying out the method according to one of claims 1 to 8, characterized in that it comprises means (24), (25) for cooling the cleaning solvent, means (14a), (14b) , (15), (17), (18) and (19) for inerting and pressurizing, means (16), (26), (27), (30), (31) , (34) and (35) for subjecting the parts to a cleaning treatment, means (14b) and (32) for drying the parts and disinfecting the cleaning enclosure. Machine selon la revendication 8, caractérisée en ce qu'elle comporte une enceinte de nettoyage (5), un caisson frigorifique (24), des moyens fixes (6), (12) et (13) pour visualiser l'opération de nettoyage, des moyens mobiles (7), (8) et (9) pour permettre l'entrée et la sortie des pièces dans l'enceinte, des moyens mobiles (outils ) pour nettoyer et sécher.Machine according to claim 8, characterized in that it comprises a cleaning enclosure (5), a refrigerated box (24), fixed means (6), (12) and (13) for viewing the cleaning operation, mobile means (7), (8) and (9) to allow the entry and exit of the parts in the enclosure, mobile means (tools) for cleaning and drying. Machine selon l'une des revendications 8 et 9, caractérisée en ce qu'elle comporte des moyens fixes (6), (12), (13) et (28) pour le contrôle des opérations en général, (11), (18), (19), (22), (23), (27), (28) et (29) pour la sécurité.Machine according to either of Claims 8 and 9, characterized in that it includes fixed means (6), (12), (13) and (28) for controlling operations in general, (11), (18 ), (19), (22), (23), (27), (28) and (29) for security.
EP00125979A 2000-11-28 2000-11-28 Method and machine with controlled tightness for the manual cleaning of workpieces with industrial solvents Expired - Lifetime EP1208921B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE60017918T DE60017918T2 (en) 2000-11-28 2000-11-28 Controlled leakproof process and machine for manual cleaning of workpieces with industrial solvents
ES00125979T ES2238023T3 (en) 2000-11-28 2000-11-28 PROCEDURE AND MACHINE WITH CONTROLLED SEALING FOR MANUAL CLEANING OF PARTS WITH INDUSTRIAL SOLVENTS.
AT00125979T ATE288326T1 (en) 2000-11-28 2000-11-28 METHOD AND MACHINE WITH CONTROLLED LEAKNESS FOR MANUAL CLEANING OF WORKPIECES WITH INDUSTRIAL SOLVENTS
EP00125979A EP1208921B1 (en) 2000-11-28 2000-11-28 Method and machine with controlled tightness for the manual cleaning of workpieces with industrial solvents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00125979A EP1208921B1 (en) 2000-11-28 2000-11-28 Method and machine with controlled tightness for the manual cleaning of workpieces with industrial solvents

Publications (2)

Publication Number Publication Date
EP1208921A1 true EP1208921A1 (en) 2002-05-29
EP1208921B1 EP1208921B1 (en) 2005-02-02

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EP00125979A Expired - Lifetime EP1208921B1 (en) 2000-11-28 2000-11-28 Method and machine with controlled tightness for the manual cleaning of workpieces with industrial solvents

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EP (1) EP1208921B1 (en)
AT (1) ATE288326T1 (en)
DE (1) DE60017918T2 (en)
ES (1) ES2238023T3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4941490A (en) * 1989-03-10 1990-07-17 Stanley Gross Low temperature apparatus for cleaning jewelry and gems
US5027841A (en) * 1990-04-24 1991-07-02 Electronic Controls Design, Inc. Apparatus to clean printed circuit boards
WO1999055473A1 (en) * 1998-04-29 1999-11-04 Nash Investments Limited Method of and apparatus for cleaning objects manually by use of solvents
US6010400A (en) * 1995-05-25 2000-01-04 Flanders Filters, Inc. Isolation workstation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4941490A (en) * 1989-03-10 1990-07-17 Stanley Gross Low temperature apparatus for cleaning jewelry and gems
US5027841A (en) * 1990-04-24 1991-07-02 Electronic Controls Design, Inc. Apparatus to clean printed circuit boards
US6010400A (en) * 1995-05-25 2000-01-04 Flanders Filters, Inc. Isolation workstation
WO1999055473A1 (en) * 1998-04-29 1999-11-04 Nash Investments Limited Method of and apparatus for cleaning objects manually by use of solvents

Also Published As

Publication number Publication date
DE60017918T2 (en) 2006-03-30
ATE288326T1 (en) 2005-02-15
ES2238023T3 (en) 2005-08-16
DE60017918D1 (en) 2005-03-10
EP1208921B1 (en) 2005-02-02

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