WO2021069652A1 - Dispositif de production de glace sèche - Google Patents

Dispositif de production de glace sèche Download PDF

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Publication number
WO2021069652A1
WO2021069652A1 PCT/EP2020/078391 EP2020078391W WO2021069652A1 WO 2021069652 A1 WO2021069652 A1 WO 2021069652A1 EP 2020078391 W EP2020078391 W EP 2020078391W WO 2021069652 A1 WO2021069652 A1 WO 2021069652A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
plunger
dry ice
drive
piston
Prior art date
Application number
PCT/EP2020/078391
Other languages
German (de)
English (en)
Inventor
Jörg Peter MEHRER
Frank Viertel
Original Assignee
CryonCo GmbH & Co. KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CryonCo GmbH & Co. KG filed Critical CryonCo GmbH & Co. KG
Publication of WO2021069652A1 publication Critical patent/WO2021069652A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide
    • C01B32/55—Solidifying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/24—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by rack-and-pinion means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/42—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by magnetic means, e.g. electromagnetic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/027—Particular press methods or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/26—Extrusion presses; Dies therefor using press rams

Definitions

  • the invention relates to a device for producing dry ice with the features of the preamble of claim
  • the invention is based on the object of enabling a comparatively inexpensive operation of a device for producing dry ice with simple structural means. It is desirable to avoid contamination by hydraulic oil as much as possible.
  • the invention achieves this object by a device for producing dry ice with the features of claim 1.
  • the device is characterized in that the plunger drive is designed as an electromechanical drive.
  • electromechanical in contrast to hydraulic or electro-hydraulic drives, the use of an electromechanical drive is therefore proposed.
  • Electromechanical in this context means that the drive has an electrical drive source (motor) which is directly or indirectly mechanically, but not hydraulically or pneumatically, coupled to the plunger and can drive it. Since no hydraulic drive components are provided, can
  • connection between the first chamber (“snow chamber”) and the second chamber (“pressing chamber”) can be designed in such a way that the first chamber opens into the second chamber.
  • the device can produce dry ice in the form of disks, blocks and / or pellets.
  • the plunger drive can have an electric motor which is coupled to the plunger by means of a gear. This creates a structurally favorable coupling of the electric motor and plunger.
  • a comparatively compact electric motor can be used with a correspondingly geared transmission.
  • self-locking can be achieved through the transmission.
  • the transmission output can be coupled to the plunger or the plunger rod.
  • a servo or synchronous motor or an asynchronous motor can be used as the electric motor.
  • the transmission can be designed as a screw jack, bevel gear, worm gear, planetary roller screw drive or lifting screw drive. This creates a structurally simple and robust implementation of a rotary movement of the electric motor into a translational movement of the transmission output. This favors a coupling of the transmission output with the plunger or plunger rod.
  • a control can be provided which controls the electric motor. This can be used to regulate the operation and functions of the electric motor.
  • control can be set up in such a way that the end position of the plunger in the second chamber relative to the end of the second chamber facing away from the plunger can be adjusted by specifying the desired thickness of the dry ice. This can be used to produce dry ice slices or blocks of dry ice in a desired thickness.
  • the end position means the distance between the dem Chamber interior or the piston head facing the dry ice to the end of the chamber along the
  • the thickness of the dry ice slices or dry ice blocks can be adjusted in defined steps, e.g. in 1mm steps with a thickness of 15-30mm (millimeters) and / or in 5mm steps with a thickness of 30mm. 100mm.
  • the electric motor can advantageously have an (internal) transmitter, by means of which the position of the plunger in the second chamber can be determined.
  • the position of the plunger (position along the central longitudinal direction of the second chamber) can thus be determined on the basis of the motor revolutions made or the rotational position in which the rotor or the motor shaft is located.
  • the use of an encoder for the electric motor contributes to a simple and cost-effective solution, since separate (external) sensors can be dispensed with.
  • the encoder of the electric motor can be an incremental encoder, for example an incremental rotary encoder.
  • the encoder signal can be transmitted to the control of the electric motor.
  • an (external) sensor system for determining the position of the press piston (position along the central longitudinal direction of the second chamber) in the second chamber can be provided on the press piston drive or on the second chamber.
  • the position of the plunger can be determined by measurement by means of the sensors.
  • a potentiometer for example a Linear potentiometer.
  • a determined position signal can be transmitted to the control of the electric motor.
  • the electric motor for example a linear potentiometer.
  • the control system can be set up in such a way that the pressing force to be applied to the dry ice by the press piston serves as a target variable for the control system.
  • the dry ice can be compressed with a defined density through a targeted pressing force.
  • the aim here is preferably a dry ice density of 1.5 to 1.56 g / cm 3 (grams per cubic centimeter).
  • the pressing force required to obtain a defined density can, for example, be determined beforehand in tests. A high level of accuracy and good reproducibility can be achieved.
  • a characteristic curve can be stored in the control of the electric motor which assigns different levels of power consumption of the electric motor to an associated pressing force of the plunger. This contributes to a structurally favorable configuration, since a defined pressing force can be applied to the dry ice with a certain power consumption of the electric motor by the pressing piston. A defined power consumption or energization of the electric motor leads to a specific pressing force on the plunger, which in turn compresses the dry ice to a defined density.
  • the characteristic curve or measured values, based on whose characteristic curve can be determined can be determined, for example, through experiments.
  • a force measuring device connected electrically and / or electronically to the control can be provided, which detects the pressing force applied by the plunger and transmits this to the control. This enables the force actually applied by the plunger to be recorded.
  • the force measuring device can, for example, be mounted on the press piston or on the piston rod of the press piston.
  • the force measuring device can, for example, be arranged between the piston rod and the plunger or between the transmission output and the piston rod in order to be able to detect acting forces.
  • the force measuring device can, for example, be based on strain gauge technology (strain gauges) and be designed as a load cell.
  • the plunger drive can advantageously be designed in such a way that the plunger can be moved with a uniform advance under load. This promotes high accuracy and reproducibility in the production of dry ice, since jerky movements can be avoided.
  • the plunger is "under load” when it applies a force to dry ice (to be compressed).
  • the controller can have a logic by means of which a load-free state of the plunger can be recognized, so that the plunger drive is activated in one step when the load-free state is recognized
  • Fast driving mode is operable.
  • empty trips or routes without load can be run through in the "high-speed” mode, for example when driving back or when "pre-pressing” (snow is still loosely on the plunger, which moves from an initial position to compress the snow in the second chamber) .
  • time can be saved, as a result of which the throughput of the device for producing dry ice can be increased.
  • control can be set up in such a way that when the end position (desired thickness of the dry ice, see above) is reached, the pressing force to be applied to the dry ice by the plunger is maintained by energizing the electric motor for a predetermined holding period. This improves the quality of the dry ice, as the dry ice retains its compressed shape even better.
  • the holding time can be, for example, 1 to 3 seconds.
  • a slide piston can be arranged in the first chamber which can be displaced by means of a piston drive device along the central longitudinal direction of the first chamber, the piston drive device being designed as an electromechanical drive.
  • Piston drive device and slide piston can C0 2 snow generated in the first chamber from the first chamber be pushed out, for example.
  • the electromechanical drive can have an electric motor.
  • the electric motor can act on a toothed rack, for example, via a gear mounted on the motor shaft, which is mechanically connected to the slide piston.
  • the second chamber can expediently have a dry ice outlet which opens into a dispensing area for removing the dry ice produced, a dispensing slide for pushing out dry ice being provided in the dispensing area, the dispensing slide being displaceable by a slide drive device along a pushing-out direction, the slide drive device as electromechanical drive is formed. This, too, can further reduce the risk of contamination of CC ⁇ snow or dry ice by hydraulic oil.
  • the electromechanical drive can have an electric motor.
  • the electric motor can act on a toothed rack, for example, via a gear mounted on the motor shaft, which is mechanically connected to the dispensing slide.
  • the dispensing slide can be set up in such a way that it is in an extended position (dispensing slide is located at or near the dispensing device, such as a slide, for example) for The purpose of closing the dry ice outlet is used (explained again below).
  • a guide device can be provided by means of which the plunger and / or the plunger rod of the plunger is guided. This increases the stability of the plunger drive relative to the second chamber.
  • the device for producing dry ice can have a frame on or in which the components of the device are attached.
  • several guide rods can be arranged, the central longitudinal direction of which is aligned parallel to the central longitudinal direction of the second chamber.
  • the guide rods can be coupled to the frame.
  • a plate can be provided which, for example, is displaceably guided on the guide rods by means of slide bushings.
  • the plate On one side of the plate, the plate can be coupled to a transmission output of the transmission. On an opposite side of the plate, the plate can be coupled to the plunger or a piston rod of the plunger.
  • the force measuring device can also be attached to the plate.
  • the force measuring device can be arranged on the side of the plate facing (opposite) the second chamber between the plate and the plunger or the plunger rod of the plunger.
  • Fig.l an embodiment of a device for
  • FIG. 1 shows an apparatus for producing dry ice, which is designated as a whole by the reference numeral 10.
  • the device 10 is shown here in a schematic principle diagram, on the basis of which the basic structure and the function of the device 10 are to be explained.
  • the device 10 basically has a first chamber 12 (snow chamber 12), a second chamber 14 (pressing chamber 14) and a closing and / or dispensing area 16.
  • the first chamber 12 (snow chamber 12) is used to produce CC> 2 snow starting from liquid carbon dioxide supplied from the first chamber 12.
  • the first chamber 12 is connected via a feed line 18 to a reservoir 20 in which carbon dioxide liquefied under pressure is contained.
  • the supply line 18 opens via one or more accesses 22 into the interior 24 of the first chamber 12.
  • Nozzles (not shown in detail) can be provided at the accesses 22.
  • Via adjustable valves 26, the flow of liquefied CO2 into the first chamber 12 can be regulated.
  • a slide piston 28 is provided, which can be displaced by means of a piston drive device 30 (cf. FIG. 2) along a central longitudinal direction 32 of the first chamber 12.
  • the slide piston 28 is guided, for example, by means of two piston rings on the inner surface of the chamber wall 36 of the first chamber 12.
  • the first chamber 12 is delimited to the outside by the chamber wall 36.
  • the first chamber 12 is delimited at one end by the piston head 38 of the displaceable slide piston 28 (see FIG. 1).
  • the first chamber 12 opens into the second chamber 14 via an opening 40.
  • the second chamber 14 (pressing chamber 14) is used to compress or press CCb snow introduced into the second chamber 14.
  • the second chamber 14 has a press piston 42 which can be displaced by means of a press piston drive 44 (see FIG. 2) along the central longitudinal direction 46 of the second chamber 14.
  • the central longitudinal direction 32 of the first chamber 12 and the central longitudinal direction 46 of the second chamber 14 are, for example, oriented orthogonally to one another. A compression of CC ⁇ snow thus takes place "upwards" in FIG.
  • the plunger 42 is preferably designed such that the opening 40 from the first chamber 12 into the second chamber 14 by means of the Pressing piston 42 can be closed (the mouth 40 is closed when the pressing piston 42 has moved along the central longitudinal direction 46 over a certain amount to the dry ice outlet 52).
  • the second chamber 14 is delimited towards the outside by a chamber wall 48.
  • the second chamber 14 is delimited at one end by the piston head 50 of the press piston 42.
  • the second chamber 14 has a dry ice outlet 52 which opens into the output area 16 for removing produced dry ice.
  • An output device 54 is attached to the output area 16, for example in the form of a belt or a chute, by means of which the dry ice can be fed to a collecting container or container for dry ice, for example.
  • a tool holder 56 for receiving exchangeable tool inserts for dry ice shaping is arranged at the dry ice outlet 52.
  • the tool holder 56 is designed in particular as a frame-shaped structure (tool frame), so that different tool inserts can be inserted or pushed in. This enables the production of dry ice blocks, dry ice slices or dry ice pellets, depending on the use of a tool insert.
  • an output pusher 58 for pushing out dry ice is also provided, the output pusher 58 being driven by a pusher drive device 60 (see FIG. 2) can be displaced along a push-out direction 62 (see FIG. 1).
  • the dispensing slide 58 is designed in such a way that the dry ice outlet 52 can be closed by means of the dispensing slide 58.
  • extruded dry ice dry ice pellets
  • dry ice blocks or disks can also be produced, as explained above.
  • the discharge slide 58 is angled in a wedge shape at its free end 64, which favors the separation of dry ice.
  • FIG. 2 shows the device 10 for producing dry ice (dry ice production plant 10) in a side view, only a few components being provided with reference symbols for reasons of clarity. It can be seen that the device 10 has a frame 66 to which the components of the device 10 are attached. Covering elements 68 for covering the device 10 can optionally be attached to the frame 66.
  • the plunger drive 44 is designed as an electromechanical drive.
  • the press piston drive 44 has an electric motor 70 which is coupled to the press piston 42 by means of a gear 72.
  • the gear 72 is designed as a lifting spindle gear.
  • the motor shaft 71 of the electric motor 70 is coupled to the gear drive (see FIG. 2).
  • Electric motor 70 and gear 72 can be provided with a fixed or switchable coupling.
  • a guide device 76 is also provided, by means of which the press piston 42 and / or the piston rod 78 of the press piston 42 is guided.
  • a plurality of guide rods 80 are arranged, the central longitudinal direction of which is aligned parallel to the central longitudinal direction 46 of the second chamber 14.
  • the guide rods 80 are coupled to the frame 66.
  • a plate 82 is provided, which is slidably guided on the guide rods 80 by means of slide bushings 84, for example.
  • the gear 72 has a spindle (not shown in the figures) to which a spindle nut 86 is applied.
  • a spindle nut 86 By rotating the spindle, the spindle nut 86 can be displaced translationally along the spindle longitudinal direction 85 (which is parallel to the central longitudinal direction 46).
  • the spindle nut 86 can be coupled to the plate 82 directly or through an optional intermediate bushing 88. If the spindle nut 86 is displaced, the plate 82 is also displaced.
  • the plate 82 On the other side of the plate 82, the plate 82 is connected to the piston rod 78 of the plunger 42.
  • a force measuring device 90 can be provided between the plate 82 and the piston rod 78, which can be designed as a load cell, for example.
  • a control 92 (only shown schematically here) is provided for the electric motor 70, which controls the electric motor 70.
  • the controller 92 can be connected to the electric motor 70 via a control line 94.
  • the controller 92 is set up such that the end position of the plunger 42 in the second chamber 14 relative to the end facing away from the plunger 42 (end located on the tool holder 56) of the second chamber 14 can be set by specifying the desired thickness of the dry ice.
  • the electric motor 70 has an (internal) encoder, by means of which the position of the plunger 42 in the second chamber 14 can be determined.
  • an (external) sensor system for determining the position of the press piston 42 in the second chamber 14 can be provided on the press piston drive 44 or on the second chamber 14 (not shown).
  • the controller 92 is set up in such a way that the pressing force to be applied to the dry ice by the pressing piston 42 serves as the target variable.
  • a characteristic curve can be stored in the controller 92, which assigns various current consumptions of the electric motor 70 to a pressing force of the press piston 42.
  • a force measuring device 90 connected to the controller 92 can be provided, which detects the pressing force applied by the pressing piston 42 to the dry ice to be compressed and transmits this to the controller 92.
  • the press piston drive 44 is designed in such a way that the press piston 42 can be moved with a uniform advance under load.
  • the controller 92 has a logic by means of which a load-free state of the plunger 42 can be recognized, so that the plunger drive 44 can be operated in a high-speed mode when the load-free state is recognized, as explained above.
  • the controller 92 is set up in such a way that when the end position is reached, the pressing force to be applied to the dry ice by the pressing piston 42 is maintained by energizing the electric motor 70 for a predetermined holding period.
  • the piston drive device 30 by means of which the slide piston 28 can be displaced along the central longitudinal direction 32 of the first chamber 12, is designed as an electromechanical drive.
  • the piston drive device 30 has an electric motor 31, on the motor shaft of which a gear is attached (not shown). This gear is with a rack 33 in Engagement, which is coupled to the piston rod 35 of the slide piston 28 or at least partially forms this.
  • the slide drive device 60 by means of which the dispensing slide 58 can be displaced in the dispensing area 16 along a push-out direction 62, is designed as an electromechanical drive.
  • the slide drive device 60 can have an electric motor 61 which is coupled to a toothed rack 63.
  • the rack 63 is coupled to a slide rod 65 of the discharge slide 58 or at least partially forms it.
  • the device 10 for producing dry ice works as follows: To produce CC ⁇ snow, the slide piston 28 in the first chamber 12 is moved by means of the piston drive device 30 into the retracted position facing away from the mouth 40 (to the right in FIG. 1). The press piston 42 is displaced by means of the press piston drive 44 along the central longitudinal direction 46 of the second chamber 14 in such a way that the press piston 42 is located in front of the opening 40 and closes it.
  • CO2, liquefied under pressure can be introduced from the reservoir 20 via the supply line 18 and the accesses 22 into the first chamber 12 or the interior 24 of the first chamber 12.
  • the CO2, liquefied under pressure relaxes here.
  • a part of the CO2 is evaporated and can through perforated sections of the chamber wall 36 and escape from the first chamber 12 through zones that remain free.
  • the heat required for evaporation is withdrawn practically suddenly from the rest of the CO2 remaining in the interior space 24, so that it cools down.
  • CCt snow carbon dioxide snow
  • the press piston 42 is displaced by means of the press piston drive 44 along the central longitudinal direction 46 of the second chamber 14, so that the mouth 40 is released.
  • the slide piston 28 is displaced by means of the piston drive device 30 along the central longitudinal direction 32 in the direction of the mouth 40.
  • the CC ⁇ snow produced is thereby displaced from the first chamber 12 into the second chamber 14.
  • the still loose CC ⁇ snow is compressed and brought into the desired shape.
  • the corresponding die is inserted into the tool holder 56, for example a block die for the production of dry ice blocks.
  • the dispensing slide 58 is displaced along the pushing-out direction 62 by means of the slide drive device 60, so that the dry ice outlet 52 is closed by the dispensing slide 58.
  • the press piston 42 is moved in the direction of the dry ice outlet 52 by means of the press piston drive 44.
  • the CC ⁇ snow is compressed and, under pressure, deformed into the shape given by the die, here for example a block die. This creates a block of dry ice, for example.
  • the dry ice is compressed with a defined density, as explained above.
  • the discharge slide 58 is displaced again so that the dry ice outlet 52 is released.
  • the plunger 42 can be displaced further towards the dry ice outlet 52 so that the formed dry ice block is guided out of the dry ice outlet 52 and can be pushed from the block die onto the dispensing device 54 by moving the dispensing slide 58.
  • the dry ice outlet 52 is closed again by the discharge slide 58 so that further dry ice blocks can be produced.
  • a pane die can be used instead of the block die.
  • the block die and the disc die can be one and the same die.
  • An extrusion die is inserted into the tool holder 56 to produce dry ice pellets.
  • the production of C0 2 snow in the first chamber 12 and the relocation of the C0 2 snow produced into the second chamber 14 takes place as described above.
  • the plunger 42 is moved in the direction of the dry ice outlet 52, the C0 2 snow being pressed under pressure through the extrusion die.
  • the dispensing slide 58 is initially in the retracted position so that the dry ice outlet 52 is released. Depending on the desired length of the dry ice Pellets, the dispensing slide 58 is displaced in the direction of the dry ice outlet 52, with sections of extruded dry ice protruding from the dry ice outlet 52 or the extrusion die being separated and moved to the dispensing device 54.
  • the dry ice can be compressed with a defined density by monitoring the power consumption of the electric motor 70 of the plunger drive 44 and / or by detecting the applied force with the force measuring device 90.
  • the output slide 58 is then withdrawn again and, after the sections of dry ice protrude in the desired length from the dry ice outlet 52 or the extrusion die, in the direction of the
  • Relocated dry ice outlet 52 to separate the protruding sections and move them to dispenser 54.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

L'invention concerne un dispositif (10) destiné à produire de la glace sèche, comprenant : une première chambre (12) destinée à produire de la neige à partir de dioxyde de carbone liquide fourni à la première chambre (12) ; et une seconde chambre (14) destinée à comprimer la neige produite dans la première chambre (12) au moyen d'un piston de pressage (42) pour former de la glace sèche, le piston de pressage (42) étant mobile dans la direction longitudinale centrale (46) de la seconde chambre (14) au moyen d'un entraînement de piston de pressage (44), étant conçu et développé de sorte que l'entraînement de piston de pressage (44) soit un entraînement électromécanique, afin de permettre, à l'aide de moyens de conception simples, un fonctionnement comparativement économique.
PCT/EP2020/078391 2019-10-11 2020-10-09 Dispositif de production de glace sèche WO2021069652A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019127504.0 2019-10-11
DE102019127504.0A DE102019127504B3 (de) 2019-10-11 2019-10-11 Vorrichtung zum Herstellen von Trockeneis

Publications (1)

Publication Number Publication Date
WO2021069652A1 true WO2021069652A1 (fr) 2021-04-15

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1891822U (de) * 1964-02-12 1964-04-30 Steinkohlengas Ag Vorrichtung zur herstellung von trockeneis-bloecken auf fluessiger kohlensaeure.
US6189336B1 (en) * 1999-01-13 2001-02-20 Innovative Co2 Equipment, Inc. Apparatus for facilitating the formation capture and compression of solid carbon dioxide particles
WO2007121967A2 (fr) * 2006-04-25 2007-11-01 Wagener Gastronomieproduktion Gmbh Dispositif destiné à distribuer de la crème glacée
EP1864790A2 (fr) * 2006-06-07 2007-12-12 Mann+Hummel Gmbh Dispositif de pressage, en particulier destiné à déshumidifier des copeaux métalliques ou une boue de meulage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE484570C (de) * 1927-07-27 1929-10-17 Waldemar Hessling Verfahren und Maschine zum Zusammenpressen von festem Kohlendioxyd
ATE383556T1 (de) * 2000-09-05 2008-01-15 Cold Blasting Aps Granulierpresse für trockeneis

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1891822U (de) * 1964-02-12 1964-04-30 Steinkohlengas Ag Vorrichtung zur herstellung von trockeneis-bloecken auf fluessiger kohlensaeure.
US6189336B1 (en) * 1999-01-13 2001-02-20 Innovative Co2 Equipment, Inc. Apparatus for facilitating the formation capture and compression of solid carbon dioxide particles
WO2007121967A2 (fr) * 2006-04-25 2007-11-01 Wagener Gastronomieproduktion Gmbh Dispositif destiné à distribuer de la crème glacée
EP1864790A2 (fr) * 2006-06-07 2007-12-12 Mann+Hummel Gmbh Dispositif de pressage, en particulier destiné à déshumidifier des copeaux métalliques ou une boue de meulage

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