EP1769886B1 - Dispositif de sablage à glace carbonique - Google Patents

Dispositif de sablage à glace carbonique Download PDF

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Publication number
EP1769886B1
EP1769886B1 EP06117362A EP06117362A EP1769886B1 EP 1769886 B1 EP1769886 B1 EP 1769886B1 EP 06117362 A EP06117362 A EP 06117362A EP 06117362 A EP06117362 A EP 06117362A EP 1769886 B1 EP1769886 B1 EP 1769886B1
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EP
European Patent Office
Prior art keywords
dry ice
compressed air
container
suction
suction socket
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EP06117362A
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German (de)
English (en)
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EP1769886B8 (fr
EP1769886A1 (fr
Inventor
Juerg Solenthaler
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Desisa GmbH
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zeintra AG
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Publication of EP1769886B8 publication Critical patent/EP1769886B8/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2

Definitions

  • the invention relates to an apparatus and a method for dry ice cleaning with the features of the preamble of the independent claims. It is known to clean surfaces by means of dry ice granules. Dry ice granules or so-called pellets are thrown through a hose with a blasting gun provided at the free end of the hose against a surface to be cleaned. For sucking pellets from a container, it is known to generate a negative pressure on the blasting gun. The further promotion of the pellets and the discharge from the gun can be done by means of compressed air from a separate compressed air line. Such a method and a corresponding device is for example out DE 19 624 652 known.
  • the shelf life is therefore limited.
  • such pellets are more expensive to manufacture. It is therefore an object of the present invention to avoid the disadvantages of the known, in particular to provide a device and a method for dry ice cleaning, which ensure a uniform operation and a uniform delivery of dry ice pellets, which prevent in particular clumping or blockages in suction lines.
  • the device according to the invention and the method according to the invention should also make it possible to provide a device which is space-saving and cost-effective in the simplest possible way.
  • the device according to the invention for dry ice cleaning has a container for holding dry ice.
  • An intake for sucking dry ice pellets protrudes with a suction end into the container.
  • the intake manifold is movable back and forth in the container, preferably in its longitudinal direction.
  • the intake manifold is movable with its suction end against a stop surface such that dry ice pellets are comminuted between the stop surface and the suction end.
  • the movement of the intake manifold therefore simultaneously leads to a promotion of dry ice in the container.
  • the flow rate can be adjusted.
  • the promotion of dry ice pellets in the container can be achieved particularly effectively if the intake nozzle projects from below into the container.
  • the intake manifold can preferably be moved pneumatically, but also electrically. Agglomeration, for example by freezing, is prevented by the movement of the intake manifold. At the same time, crushing of the pellets is brought about by the mechanical action of the stop surface and the suction end of the intake nozzle on the dry ice pellets or, if necessary, on pellets frozen with each other. This allows on the one hand for a given size of pellets smaller dry ice particles be sucked in and delivered. On the other hand, agglomerated larger aggregates of pellets can be comminuted again so that clogging of the intake port or of subsequent transport lines is prevented.
  • the device is provided with a compressed air connection for conveying dry ice pellets in a transport line and / or for generating a negative pressure in the intake manifold. Dry ice pellets, for example, can be placed in a stream of compressed air and thrown with this against a surface to be cleaned.
  • the drive for reciprocating the intake manifold is a pneumatic drive which is connected or connectable to the compressed air port. This can be generated in a particularly simple manner, a movement of the intake. There are no additional electrical components necessary.
  • Compressed air which is used for conveying and / or spinning dry ice pellets, can be used simultaneously to actuate the intake manifold.
  • the device according to the invention can thereby be produced in a particularly simple and cost-effective manner.
  • no power connections are needed for the operation of the device according to the invention, whereby they can be used very flexible. While such a drive on its own already has significant advantages, it is understood that such a drive is advantageously used in combination with the embodiment described above with a stop surface.
  • the intake manifold is reciprocable in a direction parallel to a longitudinal axis of the container.
  • the container is used as intended Using the device placed vertically, so that dry ice can be filled from above through an opening.
  • dry ice pellets always flow due to gravity into the lowest area of the container in which the intake manifold is located. Extracted dry ice particles are automatically replaced by trailing pellets.
  • an air supply line is provided in the container.
  • This air supply line terminates on the one hand in a suction adjacent to the suction end of the intake.
  • the air supply line ends outside a range which is provided for receiving dry ice in the container. Because a vacuum is generated by the intake manifold, air must be able to flow from the outside into the intake area to equalize the pressure. If air flows through the dry ice pellets stored in the container, the risk of air moisture and the temperature of dry ice of -78 ° C could cause the pellets to collapse next to each other. When the air is brought into the suction area through an air supply line and thereby isolated from the pellets, the problem of freezing pellets is solved.
  • a particularly simple embodiment results when the air supply line is designed as a tube, at the end of which the stop surface is located.
  • the same component can then serve as a stop and as an air supply, which reduces the design effort.
  • the tube serving as an air supply line terminates in a lid for the container.
  • the lid points in the area of a receptacle for the tube has at least one air channel. In this way, it is particularly easy to guide air from outside the container into the intake area.
  • a pneumatic cylinder is used as a drive for the intake manifold.
  • other drives for example electric drives, would also be conceivable in principle.
  • the pneumatic cylinder can be operated particularly easily with an oscillating valve or timer.
  • the device has a compressed air gun for discharging the dry ice.
  • the compressed air gun is provided in an area after an actuating valve with a connection for a control line.
  • the control line is connected to an actuator assembly for driving the intake manifold such that in the presence of a back pressure in the area after the actuating valve of the compressed air gun, the actuator assembly is activated for the drive.
  • it is particularly easy to switch on the reciprocating motion of the intake manifold without additional control mechanisms as soon as dry ice particles are to be conveyed.
  • the actuation valve on the compressed air gun is opened, compressed air flows through the gun. As a result, pressure builds up in the area of the connection.
  • the compressed air gun is designed to generate a negative pressure simultaneously. Due to the Venturi principle, an air flow in the compressed air gun leads to a negative pressure. This makes it particularly easy to generate negative pressure in the intake manifold when it is connected to the compressed air gun in the area after a cross-sectional constriction. Particularly preferred is the connection for arranged a control line between this cross-sectional constriction and the actuating arrangement of the compressed air gun. Due to the cross-sectional constriction, a dynamic pressure forms in the region of the connection for the control line when the actuating valve is opened.
  • a further cross-sectional constriction can be provided in the compressed air gun in order to form an acceleration section for dry ice pellets in the air jet.
  • the erfindungefflessen device can be in a particularly simple manner by operating the actuating valve of a compressed air gun, in particular by opening a valve of a conventional gun, simultaneously a flow for dry ice pellets, a control command for operating the drive for the intake and a negative pressure for sucking dry ice pellets produce.
  • the container for receiving the dry ice is conically formed in a lower portion.
  • the intake opens in the region of the lowest point in the container, so that an automatic supply of dry ice pellets is guaranteed by Nachrinnen.
  • At least one of the connecting hoses is designed to be electrically conductive as an antistatic hose. Electric charges, which can build up in the area of the compressed air gun, are thus conducted in a simple manner to a compressed air connection, which is usually grounded.
  • a suction device which serves to suck away removed dirt.
  • a negative pressure can be generated in the manner described above.
  • a device as described above is preferably used.
  • dry ice pellets are sucked from a container by means of an intake manifold.
  • the pellets are comminuted before being aspirated.
  • the intake manifold is reciprocated so that dry ice pellets are comminuted between a stop surface and a suction end of the intake manifold.
  • a negative pressure is generated in an intake port projecting into a container for receiving dry ice and / or a delivery flow for conveying dry ice particles is generated.
  • a pneumatic drive is actuated such that the intake manifold moves back and forth.
  • the compressed air arrangement for actuating the pneumatic drive is also used for generating the delivery flow and / or for generating the negative pressure in the intake manifold.
  • the pneumatic drive for the intake manifold is preferably actuated by means of an oscillating valve.
  • a pressure in a compressed air gun for discharging the dry ice is preferably tapped in an area after an actuating valve of the compressed air gun.
  • a mechanical control signal for actuating the drive for the intake manifold can be easily generated in this way.
  • a normally switched valve which is actuated simultaneously with the activation of conveying air for the compressed air gun.
  • the reciprocating movement of the intake manifold is also preferably such that the dry ice particles in the container are loosened so that they can easily trickle into a suction region.
  • FIG. 1 schematically the structure of an inventive device 1 for dry ice cleaning is shown.
  • Dry ice T is placed in a container 10.
  • the dry ice T is in the form of particles or so-called pellets.
  • the pellets trickle into a suction area in a lower portion 23 of the container 10.
  • a suction nozzle 11 is provided for sucking dry ice pellets.
  • the intake manifold 11 is movable in the longitudinal direction L back and forth.
  • the longitudinal direction L is approximately parallel to the axis A of the typically cylindrical container 10.
  • the intake manifold 11 is movable with a suction 12 against a stop 13 towards. Dry ice pellets which are located between the stopper 13 and the suction end 12, are crushed due to the reciprocating movement of the intake manifold 11.
  • the distance between the suction end 12 of the intake manifold 11 and the stop surface 13 is a maximum of 30 millimeters and a minimum of 0 millimeters, which means that the suction end 12 is in abutment with the stop surface 13.
  • Dry ice pellets which typically have a size of 3 mm in diameter, can thus be shredded so that they can be sucked in with a 6 mm internal diameter intake pipe without the risk of jamming.
  • the actuation of the intake manifold 11 is effected by means of a pneumatic cylinder 14.
  • the pneumatic cylinder 14, e.g. The Festo DNCB-32-25-PPV-A type is operated by an oscillating valve 30 or a pneumatic timer.
  • the frequency of the reciprocating motion can be adjusted on the oscillating valve 30. It is a few hertz, typically 3-10 hertz. Depending on the size of the pellets or the desired delivery rate, however, the frequency can be changed.
  • Compressed air for actuating the pneumatic cylinder 14 is made available for example by an existing compressed air system in a commercial enterprise.
  • the device 1 is provided with a compressed air connection 15 for connection to such a compressed air system Mistake.
  • Compressed air is supplied to the oscillating valve 30 via a drive line 41.
  • a pneumatically controlled 3/2 way valve or a stop screw serves as a control valve 36 for actuating the Oszillierventils 30.
  • a pressure regulator 40 is arranged, which may also be provided with any necessary filters.
  • a valve type LFR-3/8-D-MIDI manufacturer Festo is used.
  • the control valve 36 is connected via a control line 35 to a port 34 on a compressed air gun 31.
  • the port 34 of the compressed air gun 31 is located in a region 33, after an actuating valve 32 of the compressed air gun 31.
  • a pressure builds up in the region 33 of the port 34.
  • the control valve 36 opens this.
  • the oscillating valve and thus the pneumatic drive 14 are put into operation.
  • the compressed air gun 31 is also connected via a compressed air line 38 to the compressed air connection 15.
  • the compressed air line 38 is typically designed as an antistatic hose. In this way, electrostatic charges can be conducted away from the compressed-air gun 31 in a particularly simple manner.
  • the port 15 for a compressed air system is typically grounded. With such an antistatic hose, charges can be grounded through the compressed air system.
  • a pressure regulator 39 is also arranged in the compressed air line 38.
  • the pressure regulator 39 has the same structure as the pressure regulator 40 in the drive line 41 and can be provided with a filter if necessary.
  • the intake manifold 11 is connected via a suction line 37 with the compressed air gun 31.
  • a negative pressure is generated in a region 45 due to the rapidly moving air.
  • the suction line 37 opens into the compressed air gun 31 in the area 45.
  • a negative pressure of about 0.3-0.5 bar, so that pellets through the intake pipe 37 and the intake manifold 11 are sucked.
  • Dry ice pellets arrive via the suction line 37 into the compressed air gun 31 where they are admixed with the compressed air flow supplied through the compressed air line 38 and discharged via a nozzle to the compressed air gun 31.
  • a further cross-sectional constriction for generating an accelerating flow for the dry ice pellets can be arranged in the compressed air gun 31.
  • the proportion of compressed air used to actuate the drive 14 is relatively low. Typically, a total of about 300-500 1 / min compressed air at 6 bar is used, with about 10-20% are used for the drive.
  • the device 1 is shown in more detail in side view.
  • the device 1 consists essentially of a frame 2, which is provided with rollers 3. Thanks to the rollers 3, the device 1 can be easily moved to any desired location.
  • the frame 2 carries a container 10 for receiving dry ice T. Dry ice T is stored in a region 17 for receiving dry ice in the container 10.
  • the container 10 has insulated walls.
  • an air supply pipe 16 is provided in the container 10.
  • the air supply pipe 16 is substantially parallel and concentric with the axis A of the approximately cylindrical container 10.
  • the air supply pipe 16 is closed at its lower end. Thereby, a stop surface 13 is formed for the reciprocating intake manifold 11.
  • Openings 25 at the lower end of the air supply pipe 16 serve for the subsequent flow of air in a suction region arranged in the lower section 23 of the container 10.
  • the air supply pipe 16 opens at its upper end 19 in a cover 20 for closing the container 10.
  • the lid 20 is provided with a receptacle 21 for receiving the tube 16.
  • Air channels 22 in the lid 20 connect the interior of the air supply pipe 16 with the environment.
  • the suction end 12 of the intake manifold 11 passes through an opening 28 through the bottom of the container 10. Due to the conical shape of the bottom 26 of the container 10 dry ice T trickles automatically into the lower portion 23, where it from the up and down moving intake 11th is sucked. Due to the shaking motion through the reciprocating intake manifold 11, the dry ice pellets are also conveyed in the vessel.
  • the stroke of the pneumatic cylinder 14 is approximately chosen so that the suction end 12 of the intake manifold 11 from the lowest point 24 of the conical bottom 26 as the lowest position up to the stop surface 13 is moved as the highest position.
  • the stroke is 15 to 30 millimeters.
  • a pipe with 8 millimeters outside diameter and 6 millimeters inside diameter is used as the intake.
  • the tube 16 for guiding air typically has an outer diameter of 20 millimeters and an inner diameter of 16 millimeters. This results in a stop surface with a round shape with a diameter of 20 millimeters. Suitable valves and lines are used to operate the device 1 in the in FIG. 1 shown way.
  • the container 10 may be connected firmly to the device 1, but to form it as a cartridge for holding dry ice pellets. This simplifies handling.
  • the cartridge may be formed in an identical manner as the container 10.
  • the cartridge is provided with an opening analogous to the opening 28 on the intake manifold 11 and similar to the container 10 in FIG. 2 held on a bracket.
  • the opening can be closed in the case of a cartridge with a membrane or adhesive tape. By removing the adhesive strip or cutting or pressing the membrane of the intake manifold 11 can be easily inserted through the opening.
  • FIG. 3 shows a schematic representation of a compressed air gun 31 for dispensing dry ice T.
  • an attachment 43 can optionally be placed on the compressed air gun 31, which may be a screen to control the size of the dry ice pellets, typically with a mesh size of 1.5 millimeters. But it is also conceivable to use a silencer.
  • the dry ice pellets T are comminuted in the manner described above to a size of about 1-2 millimeters and fed via a suction line 37 and via a port 44 in the compressed air gun 31.
  • a cross-sectional constriction 45 in the compressed air gun 31 a negative pressure is generated in the region of the terminal 44, so that the particles are sucked through the suction line 37 and mixed in the compressed air gun 31 via a compressed air line 38 compressed air flow.
  • Due to the cross-sectional constriction 45 is formed in a region 33 between an actuating valve 32 and the cross-sectional constriction 45, a back pressure. Via a control connection 34, this pressure is tapped and via the control line 35 in the manner described above, a control valve 36 (see FIG.
  • An actuating lever 42 actuates the actuating valve 32, which forms a connection between the compressed air line 38 and the region 33 of the compressed air gun 31. It is also conceivable to add an additional blasting medium to the dry ice. This can be done, for example, directly in the area of the terminal 44. It is also conceivable to provide a branch in the suction line 37. As an additional blasting medium, for example, calcium carbonate, slag or glass is conceivable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Cleaning In General (AREA)
  • Drying Of Solid Materials (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Inorganic Insulating Materials (AREA)

Claims (20)

  1. Dispositif (1) de sablage à glace carbonique, comprenant un récipient (10) pour recevoir de la glace carbonique (T),
    au moins une tubulure d'aspiration (11), qui pénètre avec une extrémité d'aspiration (12) dans le récipient (10),
    la tubulure d'aspiration (11) pouvant être déplacée d'avant en arrière, en particulier dans la direction longitudinale (L),
    caractérisé en ce que la tubulure d'aspiration (11) peut être déplacée avec l'extrémité d'aspiration (12) contre une surface de butée (13) de telle sorte que des particules de glace carbonique puissent être broyées entre la surface de butée (13) et l'extrémité d'aspiration (12) de la tubulure d'aspiration (11).
  2. Dispositif (1) selon la revendication 1,
    caractérisé en ce que la tubulure d'aspiration peut être déplacée d'avant en arrière avec un entraînement (14),
    le dispositif (1) présente un raccord d'air comprimé (15) pour produire un flux de transport pour la glace carbonique et/ou pour produire une dépression dans la tubulure d'aspiration (11) et
    l'entraînement est un entraînement pneumatique (14), qui est connecté ou qui peut être connecté notamment au raccord d'air comprimé (15).
  3. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la tubulure d'aspiration (11) peut être déplacée d'avant en arrière dans une direction (L) parallèlement à un axe longitudinal (A) du récipient (10).
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on prévoit dans le récipient (10) une conduite d'alimentation en air (16), qui se termine d'une part dans le récipient (10) à côté de l'extrémité d'aspiration (12) de la tubulure d'aspiration (11) et d'autre part en dehors de la région (17) du récipient (10) prévue pour recevoir la glace carbonique.
  5. Dispositif selon la revendication 4, caractérisé en ce que la conduite d'alimentation en air est réalisée sous forme de tube (16) qui est pourvu, à une extrémité (18), de la surface de butée (13).
  6. Dispositif selon la revendication 5, caractérisé en ce que le tube (16) débouche à l'autre extrémité (19) dans un couvercle (20) pour le récipient (10), qui est pourvu dans la région d'un logement (21) pour le tube, d'au moins un canal d'air (22).
  7. Dispositif selon l'une quelconque des revendications 2 à 6, caractérisé en ce que l'entraînement présente un vérin pneumatique (14) et une soupape oscillante ou un générateur de signaux d'horloge pneumatique (30) pour actionner le vérin pneumatique (14).
  8. Dispositif selon l'une quelconque des revendications 2 à 6, caractérisé en ce que le dispositif (1) présente un pistolet d'air comprimé (31) pour fournir de la glace carbonique (T), le pistolet d'air comprimé (31) étant pourvu, dans une région (33) après une soupape d'actionnement (32), d'un raccord (34) pour une conduite de commande (35), qui est connectée à un agencement d'actionnement (36) pour l'entraînement (14) de telle sorte qu'en présence d'une pression dans la région (33), le dispositif d'actionnement (36) soit activé.
  9. Dispositif selon la revendication 8, caractérisé en ce que le pistolet d'air comprimé (31) est réalisé pour produire une dépression.
  10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le récipient (10) est réalisé dans une portion inférieure (23) en se rétrécissant, notamment de manière conique, la tubulure d'aspiration (11) débouchant dans celui-ci dans une région du point le plus bas (24) du récipient (10).
  11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le récipient (10) est réalisé sous forme de cartouche pour recevoir de la glace carbonique, qui peut être connectée de manière amovible au dispositif (1), et qui présente une ouverture (28) pour recevoir la tubulure d'aspiration (11).
  12. Dispositif selon l'une quelconque des revendications 1 à 11, comprenant un pistolet d'air comprimé (31) pour fournir de la glace carbonique, et comprenant au moins une conduite d'air comprimé (38, 35) qui relie directement ou indirectement le pistolet d'air comprimé (31) à un raccord d'air comprimé (15), la conduite d'air comprimé (38) étant réalisée de manière électriquement conductrice, notamment sous forme de tuyau antistatique.
  13. Dispositif selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le dispositif est pourvu de moyens pour acheminer un jet de fluide supplémentaire, notamment du carbonate de calcium, des scories ou du verre.
  14. Procédé pour produire un jet de glace carbonique, notamment avec un dispositif selon l'une quelconque des revendications 1 à 13, contenant les étapes suivantes :
    - aspiration de glace carbonique (T) depuis un récipient (10) au moyen d'une tubulure d'aspiration (11),
    - déplacement d'avant en arrière de la tubulure d'aspiration (11) de telle sorte que des granules de glace carbonique soient broyées entre une surface de butée (13) et une extrémité d'aspiration (12) de la tubulure d'aspiration (11).
  15. Procédé selon la revendication 14, contenant les étapes suivantes :
    - production d'une dépression dans une tubulure d'aspiration (11) pénétrant dans un récipient (10) de glace carbonique (T), au moyen d'un agencement d'air comprimé et/ou
    - production d'un flux de transport pour la glace carbonique avec un agencement d'air comprimé,
    - actionnement d'un entraînement pneumatique (14) au moyen de l'agencement d'air comprimé, de telle sorte que la tubulure d'aspiration (11) soit déplacée d'avant en arrière.
  16. Procédé selon l'une quelconque des revendications 14 ou 15, caractérisé en ce que l'air entre l'extrémité d'aspiration (12) de la tubulure d'aspiration (11) et une région en dehors de la région (17) pour recevoir la glace carbonique dans le récipient est guidé par un tube d'alimentation d'air (16).
  17. Procédé selon l'une quelconque des revendications 14 à 16, caractérisé en ce qu'une pression de commande est prélevée dans une région (33) après une soupape d'actionnement (32) d'un pistolet d'air comprimé (31) dans un raccord (34) pour une conduite de commande (35).
  18. Procédé selon l'une quelconque des revendications 14 à 17, caractérisé en ce que la tubulure d'aspiration (11) est déplacée de telle sorte que de la glace carbonique (T) retenue dans le récipient (10) soit désagrégée.
  19. Procédé selon l'une quelconque des revendications 14 à 18, caractérisé en ce que la quantité de glace carbonique transportée est ajustée en ajustant la fréquence du mouvement de va et vient de la tubulure d'aspiration (11).
  20. Procédé selon l'une quelconque des revendications 14 à 19, caractérisé en ce que la glace carbonique est mélangée à un autre jet de fluide.
EP06117362A 2005-09-28 2006-07-18 Dispositif de sablage à glace carbonique Active EP1769886B8 (fr)

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CH15722005 2005-09-28

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EP1769886A1 EP1769886A1 (fr) 2007-04-04
EP1769886B1 true EP1769886B1 (fr) 2008-10-01
EP1769886B8 EP1769886B8 (fr) 2008-12-31

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EP (1) EP1769886B8 (fr)
AT (1) ATE409548T1 (fr)
DE (1) DE502006001660D1 (fr)
ES (1) ES2313564T3 (fr)

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EP2832500A1 (fr) 2013-07-29 2015-02-04 Dry-Ice-Energy GmbH Dispositif de dosage de produit à projeter et dispositif de projection pour produit à projeter
WO2021122827A1 (fr) 2019-12-17 2021-06-24 SCHIMMEL, Evelin Dispositif pour le retrait et le dosage d'un matériau abrasif

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EP2420353A1 (fr) 2010-08-16 2012-02-22 desisa GmbH Dispositif et procédé destinés au dépôt de glace sèche
DE102012013464A1 (de) * 2012-05-07 2013-11-07 Heraeus Medical Gmbh Lavage-System mit Düse
SK288682B6 (sk) 2015-08-29 2019-07-02 Ics Ice Cleaning Systems S. R. O. Zásobník suchého ľadu pre zariadenia na čistenie suchým ľadom
EP3254807B1 (fr) 2016-06-07 2023-12-27 desisa GmbH Dispositif et procede de nettoyage avec un dispositif de projection de particules
CH717501B1 (de) 2020-06-05 2023-06-30 Desisa Gmbh Vorrichtung zur Abgabe von Trockeneis und/oder Trockeneisschnee.

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Publication number Priority date Publication date Assignee Title
EP2832500A1 (fr) 2013-07-29 2015-02-04 Dry-Ice-Energy GmbH Dispositif de dosage de produit à projeter et dispositif de projection pour produit à projeter
EP2832499A1 (fr) 2013-07-29 2015-02-04 Dry-Ice-Energy GmbH Dispositif de dosage de produits à projeter
WO2021122827A1 (fr) 2019-12-17 2021-06-24 SCHIMMEL, Evelin Dispositif pour le retrait et le dosage d'un matériau abrasif

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EP1769886B8 (fr) 2008-12-31
ES2313564T3 (es) 2009-03-01
ATE409548T1 (de) 2008-10-15
EP1769886A1 (fr) 2007-04-04
DE502006001660D1 (de) 2008-11-13

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