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WO2024213462A1 - Dispositif de dosage d'un milieu cryogénique - Google Patents

Dispositif de dosage d'un milieu cryogénique Download PDF

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Publication number
WO2024213462A1
WO2024213462A1 PCT/EP2024/059194 EP2024059194W WO2024213462A1 WO 2024213462 A1 WO2024213462 A1 WO 2024213462A1 EP 2024059194 W EP2024059194 W EP 2024059194W WO 2024213462 A1 WO2024213462 A1 WO 2024213462A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve housing
shut
valve
container
cryogenic medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/059194
Other languages
German (de)
English (en)
Inventor
Denis Beil
Frank Gockel
Emir Tebib
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Messer SE and Co KGaA
Messer France SAS
Original Assignee
Messer SE and Co KGaA
Messer France SAS
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 Messer SE and Co KGaA, Messer France SAS filed Critical Messer SE and Co KGaA
Publication of WO2024213462A1 publication Critical patent/WO2024213462A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F16K31/0658—Armature and valve member being one single element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves

Definitions

  • the invention relates to a device for dosing a cryogenic medium into a container, with a valve which has a valve housing which can be fastened in the wall of the container and which is equipped with a connection for connecting a supply line for the cryogenic medium and with a nozzle opening arranged in a wall section of the valve housing for introducing the cryogenic medium into the container and in which a shut-off element is accommodated in such an axially movable manner that it can be brought from a closed state in which the shut-off element closes the nozzle opening with a closing section into an open state in which the closing section is arranged at a distance from the nozzle opening and thus releases it, and in which the axial movement of the shut-off element from its closed state into the open state takes place against the action of a restoring spring element.
  • cryogenic media particularly cryogenic liquids or gases
  • the heat transfer takes place either indirectly, i.e. without physical contact between the product to be cooled and the cryogenic medium via heat exchanger surfaces, or through direct contact between the product and the cryogenic medium, in which the product to be cooled is usually fed through a pipe or collected in a container and the cryogenic medium is introduced into the pipe or container via suitable nozzles, valves or other dosing devices.
  • the terms "pipe” and "container” are subsumed under the term "container”.
  • the entry points for the cryogenic medium When introduced into the head space of the container, the entry points for the cryogenic medium have little or no contact with the product to be cooled. Since there is a certain distance between the product and the entry points, the risk of icing of the Entry points are minimal. Therefore, simply constructed valves or nozzles can be used - for example spray nozzles or capillary nozzles that are always open towards the inside of the container.
  • the disadvantage of these systems is that only a portion of the cryogenic medium comes into contact with the product and can extract heat from it, while the rest, often larger portion, escapes unused into the atmosphere or is drained away.
  • the cryogenic medium is introduced directly into the product.
  • the entry points for the cryogenic medium are not in the head space, but in a lower part of the container, i.e. in the area that is filled with the product to be cooled during treatment.
  • bottom injection it is important to ensure that the valve can always be closed to prevent the entry points from freezing over during treatment due to freezing product and thus being blocked or impaired in their functionality.
  • product penetrates into the interior of the nozzle and permanently accumulates there, which would pose the risk of contamination.
  • the problem addressed here also applies analogously to the injection of a coolant into a line through which a liquid, or generally free-flowing, product flows.
  • valve suitable for use in the context of "bottom injection” for introducing a cryogenic medium is described in DE 101 52 764 A1.
  • the valve comprises a valve housing which is integrated in the wall of a container, for example a mixer.
  • a valve opening with a small opening cross-section is arranged in the valve housing, which can be closed by means of a valve needle in such a way that when the valve is closed, the front surface of the valve needle is in contact with the valve housing or the inner surface of the
  • the disadvantage of this arrangement is that if there is a sudden drop in pressure in the coolant supply line, product from the container can penetrate into the interior of the valve.
  • WO 2008/007000 A2 describes another device for metering a cryogenic medium.
  • This device comprises a valve with a piston-shaped shut-off element which is accommodated in a tubular guide channel so that it can move axially against the resistance of a spring and is equipped with a closing plate on the front.
  • Several passages for introducing a cryogenic medium are provided to the side of this guide channel and are connected in terms of flow to a supply line for the cryogenic medium.
  • the mouth openings of the passages are arranged in such a way that they can be closed with the closing plate of the shut-off element under the action of the spring. If the pressure in the coolant supply line, and thus in the passages, exceeds a certain limit value determined by the spring force, the valve opens. When the pressure in the coolant supply line decreases, the piston and closing plate automatically move into the closed state under the action of the spring.
  • EP 1 867 902 A2 and EP 2 309 160 A1 also disclose devices for metering a cryogenic medium into a treatment chamber, in which a shut-off element equipped with a closing plate is arranged in a guide channel so that it can move axially to a limited extent against the action of a spring.
  • the guide channel of the shut-off element also serves as a flow channel for the cryogenic medium, which simplifies the construction of the valve and reduces the risk of freezing.
  • the pressure of the cryogenic medium to be metered in must therefore always exceed a certain value, which leads to additional equipment costs.
  • the object of the present invention is therefore to provide a device for dosing a cryogenic medium which is simple in construction and highly reliable, is also suitable for injecting the cryogenic cooling medium into a lower region of a container filled with the product to be cooled or through which this product flows, and can be used without problems even with small pressure differences between the cryogenic medium to be dosed and the ambient pressure.
  • shut-off element consists at least partially of ferromagnetic material and cooperates with an electromagnet arranged on the outside of the valve housing in order to move it into its opening position.
  • the axial movement of the shut-off element into its open state is thus brought about against the force of the spring element by the actuation of an electromagnet which is arranged on the outside of the valve housing, i.e. without direct contact with the cryogenic medium.
  • the shut-off element as a whole, or at least part of it, is made of a ferromagnetic material, such as ferromagnetic, cold-resistant steel.
  • the device according to the invention reliably prevents product from penetrating into the interior of the valve even in the event of pressure fluctuations in the supply line for the cryogenic medium and reliably ensures that the cryogenic medium is supplied to the container even in the event of small pressure differences between the supply line and the container.
  • a "container” is to be understood as a container filled with a product to be cooled or a pipe through which such a product flows.
  • Containers of this type are used, for example, in the food industry or in the pharmaceutical industry for the batch production of a product or preliminary product; in order to carry out the "bottom injection” mentioned at the beginning, the valve is preferably arranged in an area of the container which, when used as intended, is wetted by a product held in the container, so that the cooling medium is introduced directly into the product and thus intimately mixed with it.
  • the container can also be a pressure line through which a liquid to be treated flows.
  • the device according to the invention is used for introducing carbon dioxide or liquid nitrogen, for example in environmental technology for treating waste water or for refreshing or disinfecting liquid foods such as wine, juices or milk.
  • the valve housing is filled with cryogenic medium which is under a certain excess pressure compared to the pressure in the container.
  • the differential pressure compared to the pressure in the container for liquid nitrogen or liquid oxygen is between 0.1 bar and 6 bar, preferably between 1.5 and 4 bar; for carbon dioxide the pressure in the supply line for the cryogenic medium corresponds to at least the pressure of the triple point (5.18 bar), preferably 8 to 20 bar, in order to keep the carbon dioxide in the liquid state.
  • the container itself is often operated without pressure, i.e.
  • the interior is at ambient pressure, but can also be operated at a pressure which is only slightly lower than the pressure of the cryogenic medium in the valve housing itself, for example between 0.01 and 0.1 bar.
  • the shut-off element is preferably installed in the valve housing in such a way that the closing section of the shut-off element, when the valve is closed, is pressed against the wall section of the valve housing having the nozzle opening by a pressure of the cryogenic medium acting inside the valve housing and is moved into the interior of the valve housing against this pressure to open the valve.
  • the electromagnet is therefore preferably designed to be capable of overvoltage, i.e.
  • the nozzle opening preferably forms the direct flow connection between the interior of the valve housing and the interior of the container; the wall section of the valve housing having the nozzle opening thus simultaneously forms a wall section of the container. In this case, there are no longer pipe sections in which product from the container can accumulate during the closing phase of the valve.
  • the nozzle opening preferably has an opening cross-section that is dimensioned such that during normal operation in the open state a predetermined minimum overpressure always remains in the valve housing compared to the container, which in turn prevents product from penetrating the valve housing.
  • the electromagnet is designed as a tubular lifting magnet, in whose tubular interior at least part of the valve housing is accommodated.
  • the spring element is made of a cold-resistant material, such as stainless steel, which retains a certain elasticity even at the cryogenic temperatures prevailing in the valve body in order to be able to maintain the restoring force effect when the valve is in use.
  • a particularly advantageous embodiment of the invention provides that the spring element has a spiral spring which extends in the valve housing between a spring seat which is arranged in a side of the valve housing facing away from the wall section with the nozzle opening and a rear section of the shut-off element, i.e. a section facing away from the closing section.
  • the spring element is preferably detachably accommodated in the valve housing in order to be easily replaced in the event of damage or if a different restoring force is required.
  • the nozzle opening is a cylindrical bore which, in order to close the valve, cooperates with a likewise cylindrically shaped closing section of the shut-off element which is introduced into the nozzle opening for this purpose. In this way, freezing of the nozzle opening is effectively prevented.
  • An equally advantageous embodiment of the invention provides that the wall section of the valve housing having the nozzle opening is conically shaped on its inner side facing the interior of the valve housing, narrowing towards the nozzle opening, and cooperates with a corresponding conical shape of the closing section of the shut-off element to close the valve.
  • the flow cross-section of an annular channel between the two conical boundaries can be varied by changing the distance of the shut-off element from the nozzle opening and thus the flow of the cryogenic medium supplied to the container can be adjusted.
  • other embodiments of the closing section of the shut-off element or of the shut-off element as a whole are also conceivable, such as a spherical shut-off element which is itself moved by the electromagnet.
  • the valve housing is detachably connected to the wall of the container. This can be done, for example, by screwing it into a the wall of the container.
  • a particularly preferred embodiment of the invention provides that the valve housing is connected to the container via a connecting piece, which in turn is firmly connected to the wall of the container, for example by welding.
  • the valve housing is inserted into the connecting piece with its front section having the nozzle opening and is detachably connected to the end of the connecting piece facing away from the container, for example by means of a clamping flange connection or in the manner of an Ingold piece by means of a union nut.
  • a suitable sealing element such as a sealing ring, arranged between the inner surface of the connecting piece and the inserted front section preferably ensures that as little product as possible from the interior of the container can penetrate into the annular gap between the connecting piece and the front section.
  • valve is equipped with means for regulating the flow rate of cryogenic medium supplied to the container.
  • the supply of cryogenic medium can thus be regulated by means of a control unit depending on a predetermined program and/or measured parameters, such as a temperature in the container.
  • a sealing element is expediently provided which is arranged in the wall section of the valve housing having the nozzle opening and/or in the closing section of the shut-off element.
  • the sealing element is made of a low-temperature-resistant material such as Teflon. This is, for example, a sealing ring accommodated in a groove running all the way around the wall section or the closing section, or the closing section of the shut-off element can itself be made of Teflon and is pressed as a whole against the wall section having the nozzle opening when the valve is closed.
  • the device according to the invention is preferably intended and suitable for the use of a liquefied gas, such as liquid nitrogen, liquid oxygen or liquid carbon dioxide, or also a cold gas, such as cryogenic gaseous nitrogen, nitrous oxide (NO2) or argon.
  • a liquefied gas such as liquid nitrogen, liquid oxygen or liquid carbon dioxide
  • a cold gas such as cryogenic gaseous nitrogen, nitrous oxide (NO2) or argon.
  • cryogenic gaseous nitrogen such as cryogenic gaseous nitrogen, nitrous oxide (NO2) or argon.
  • the device according to the invention can be used to dose gas or a liquid into a gas, a liquid or into a pasty, powdery or lumpy substance.
  • Cryogenic liquefied nitrogen is an efficient and generally inert cooling medium.
  • Nitrous oxide is often used as a sterilizing gas in food applications.
  • An equally advantageous cryogenic medium is carbon dioxide, which is supplied in liquid form via the supply line and expands when it enters the container, producing carbon dioxide
  • Fig. 1 A device according to the invention for dosing a cryogenic medium into a container in longitudinal section in a first embodiment
  • Fig. 2 A device according to the invention for dosing a cryogenic medium into a container in a partial longitudinal section in a second embodiment.
  • valve 2 is connected to the container 3 by screwing, namely by screwing the front section 4 into an opening provided with a thread 7 in a wall 8 of the container 3.
  • the front section 4 should be received in the wall 8 in its installed state in such a way that it is flush with an inner surface 10 of the wall 8, as shown here.
  • An alternative fastening option by means of a connecting piece with a clamp connection is shown in Fig. 2, which is explained in more detail below.
  • the front section 4 of the valve housing 6 is essentially tubular-cylindrical in shape and is closed at its wall section facing the inside of the container 3 in the installed state - here called front surface 9 - with the exception of a nozzle opening 11. Furthermore, the front section 4 is equipped with a thread 12 for detachably fastening the rear section 5.
  • a liquefied gas such as liquid nitrogen, liquid oxygen or liquid carbon dioxide or a cold gas, such as cryogenic gaseous nitrogen, nitrous oxide or argon, is used as a cryogenic medium.
  • the device according to the invention can be used to dose gas or a liquid into a gas, a liquid or into a pasty, powdery or lumpy substance.
  • the rear section 5 of the valve housing 6, which is also tubular, is mounted on the front section 4 in a gas-tight and pressure-tight manner with a fastening section 15, in the example shown here screwed into the thread 12, and is closed on its end face opposite the fastening section 15 to form a spring seat 16.
  • the rear section 5 preferably consists of made of a non-magnetic or paramagnetic material, such as non-magnetic stainless steel.
  • the spring means 21 is under pre-tension and presses the shut-off element 18 against the front surface 9 of the front section 4 when the valve 2 is closed.
  • a tubular electromagnet 23 is located radially on the outside of the rear section 5 and encloses the entire rear section 5, at least below the fastening section 15.
  • the electromagnet 23 serves to actuate the valve 2 in the manner described below.
  • the valve 2 Without actuation of the electromagnet 23, ie without an active magnetic field, the valve 2 is in its closed state, ie the shut-off element 18 is pressed against the front surface 9 due to the force of the spring means 21.
  • the closing section 19 extends through the nozzle opening 11 and is flush with the inner wall 10 towards the inside of the container 3.
  • cryogenic medium flows via the supply line 14 into the interior of the valve housing 6. and, due to its excess pressure compared to the pressure in the container 3, contributes to pressing the shut-off element 18 against the front surface 9.
  • the electromagnet 23 is actuated. This generates a magnetic field inside the valve housing 6, which exerts a force on the ferromagnetic shut-off element 18 that is opposite to the force of the spring means 21. If the magnetic force of the electromagnet 23 exceeds the combined force of the spring means 21 and the force on the shut-off element 18 generated by the excess pressure of the cryogenic medium, the shut-off element moves in the direction of the spring seat 16 and thus releases the nozzle opening 11 (open state of the valve 2). In this open state, the cryogenic medium supplied via the supply line 14 can flow into the interior of the container 3.
  • the valve housing 6, the shut-off element 19 and the spring means 22 are made of a material that can withstand the low temperatures and/or the high pressures of the each cryogenic medium used, for example made of a suitable, low-temperature resistant stainless steel. Furthermore, the parts 4, 5, 18, 21, 22 are preferably mounted detachably in the valve 2, which not only facilitates any maintenance, but also allows the valve 2 to be adapted to the cryogenic medium used and/or the treatment task.
  • the device 25 shown in Fig. 2 differs from the device 1 in Fig. 1 only in the different design in the area of the nozzle opening and is therefore only shown in a section. Otherwise, components that have the same effect are provided with the same reference numerals as in the device 1.
  • the device 25 has a valve 26 with a shut-off element 28, in which a closing section 27 of the shut-off element 28 is conically shaped and cooperates with a likewise conically shaped inner surface of a front surface 29 of the valve housing 30 to close a nozzle opening 31 of the valve 26.
  • a seal is not provided here in the form of a sealing ring arranged in a groove of the front surface 9, but in the form of a sealing ring 32 pulled over the closing section 27.
  • other suitable options for sealing can also be used.
  • the conical shape of the front surface 29 and closing section 27 means that the width of the annular gap 33 between the front surface 29 and closing section 27 can be changed by changing the axial position of the shut-off element 28. In this way, it is possible to vary the flow of cryogenic medium emerging from the nozzle opening 32 depending on the position of the shut-off element 28, ie the current applied to the electromagnet 23. In this case, the inflow of cryogenic medium can be varied depending on a measured parameter, for example the temperature in the container 3, by means of a suitable control device (not shown here).
  • the valve 26 is accommodated with a front section of the valve housing 30 in a connecting piece 34 which is welded into the wall 8 of the container 3 and is detachably connected to the connecting piece 34 by means of a flange connection with a clamping ring 35.
  • a sealing element for example a seal 36 made of Teflon, is arranged in corresponding grooves in the valve housing 30 or the connecting piece 34 in order to prevent product from the interior of the container 3 from penetrating into the annular gap between the valve housing 30 and the connecting piece 34.
  • an Ingold connection piece (not shown here) can also be used, which is equipped in a manner known per se with a union nut for fastening the valve 26.
  • the devices 1, 25 meet in particular the high hygienic requirements in the treatment of foodstuffs such as dough, flour, mash or meat mass for sausage production, or in the production of pharmaceutical products, intermediate products or ingredients.
  • a further area of application concerns the dosing of a cryogenic medium into a line through which a gas or liquid flows, for example in the treatment of waste water or the treatment of wine, juices or milk.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Le procédé de dosage d'un milieu cryogénique, par exemple de l'azote liquide, de l'oxygène liquide ou du dioxyde de carbone liquide, dans un récipient contenant un produit afin de refroidir le produit est connu. Le milieu cryogénique est dosé à l'aide d'un dispositif qui est installé dans la paroi du récipient et comporte une soupape reliée à une conduite d'alimentation pour le milieu cryogénique. La soupape est équipée d'un élément de blocage qui est reçu dans un boîtier de soupape et peut être amené d'un état fermé à un état ouvert, dans lequel le milieu organique peut s'écouler dans le récipient au niveau d'une ouverture de buse, dans la direction axiale contre l'effet d'un ressort de rappel. Selon l'invention, l'élément de blocage est constitué au moins en partie d'un matériau ferromagnétique et interagit avec un électroaimant disposé à l'extérieur du boîtier de soupape afin de déplacer l'élément de blocage dans sa position ouverte.
PCT/EP2024/059194 2023-04-14 2024-04-04 Dispositif de dosage d'un milieu cryogénique Pending WO2024213462A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023109505.6 2023-04-14
DE102023109505.6A DE102023109505A1 (de) 2023-04-14 2023-04-14 Vorrichtung zum Eindosieren eines kryogenen Mediums

Publications (1)

Publication Number Publication Date
WO2024213462A1 true WO2024213462A1 (fr) 2024-10-17

Family

ID=90735539

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/059194 Pending WO2024213462A1 (fr) 2023-04-14 2024-04-04 Dispositif de dosage d'un milieu cryogénique

Country Status (2)

Country Link
DE (1) DE102023109505A1 (fr)
WO (1) WO2024213462A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121619A (en) * 1972-04-04 1978-10-24 Pauliukonis Richard S Tapered valves with conical seats
US6050543A (en) * 1999-03-01 2000-04-18 Research And Development Products Llc Two-piece solenoid valve
DE10152764A1 (de) 2001-10-29 2003-05-08 Linde Ag Ventil für kryogene Medien
EP1867902A2 (fr) 2006-06-14 2007-12-19 Messer France S.A.S. Dispositif destiné au dosage d'un milieu cryogène
WO2008007000A2 (fr) 2006-07-10 2008-01-17 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Systeme d'injection de fluide cryogenique permettant le traitement de produits en vrac et procede de refroidissement le mettant en oeuvre
EP2309160A1 (fr) 2009-10-06 2011-04-13 Messer France S.A.S. Dispositif destiné au dosage d'un milieu cryogène
US20140021388A1 (en) * 2011-04-01 2014-01-23 Elbi International S.P.A. Electric valve device, in particular for a device for forming ice in a fridge
US20140246615A1 (en) * 2013-03-04 2014-09-04 Emerson Electric Co. Systems and Apparatuses for a Simplified Solenoid Valve Assembly
DE102015203728A1 (de) * 2015-03-03 2016-09-08 Robert Bosch Gmbh Dosierventil für pharmazeutische Flüssigkeiten
DE102015213268A1 (de) * 2015-07-15 2017-01-19 Festo Ag & Co. Kg Dosieranordnung und Dosiervorrichtung

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US2914086A (en) * 1954-11-16 1959-11-24 Controls Co Of America Valve device
DE3240718A1 (de) * 1982-11-04 1984-05-10 Linde Ag, 6200 Wiesbaden Ventil fuer eine explosionsfaehige fluide fuehrende leitung
US5188017A (en) * 1991-06-18 1993-02-23 The Consumers' Gas Company, Ltd. Natural gas cylinder fitting and solenoid valve
DE10243483A1 (de) * 2002-09-19 2004-04-08 Messer Griesheim Gmbh System zum Mikropelletieren von Lösungen bzw. Schmelzen
DE10347128A1 (de) * 2003-10-10 2005-05-12 Linde Ag Konisches Ventil für kryogene Medien
AT504648B1 (de) * 2007-01-17 2008-07-15 Vogelbusch Gmbh Bioreaktor mit einem zylinderförmigen mantel

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121619A (en) * 1972-04-04 1978-10-24 Pauliukonis Richard S Tapered valves with conical seats
US6050543A (en) * 1999-03-01 2000-04-18 Research And Development Products Llc Two-piece solenoid valve
DE10152764A1 (de) 2001-10-29 2003-05-08 Linde Ag Ventil für kryogene Medien
EP1867902A2 (fr) 2006-06-14 2007-12-19 Messer France S.A.S. Dispositif destiné au dosage d'un milieu cryogène
WO2008007000A2 (fr) 2006-07-10 2008-01-17 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Systeme d'injection de fluide cryogenique permettant le traitement de produits en vrac et procede de refroidissement le mettant en oeuvre
EP2309160A1 (fr) 2009-10-06 2011-04-13 Messer France S.A.S. Dispositif destiné au dosage d'un milieu cryogène
US20140021388A1 (en) * 2011-04-01 2014-01-23 Elbi International S.P.A. Electric valve device, in particular for a device for forming ice in a fridge
US20140246615A1 (en) * 2013-03-04 2014-09-04 Emerson Electric Co. Systems and Apparatuses for a Simplified Solenoid Valve Assembly
DE102015203728A1 (de) * 2015-03-03 2016-09-08 Robert Bosch Gmbh Dosierventil für pharmazeutische Flüssigkeiten
DE102015213268A1 (de) * 2015-07-15 2017-01-19 Festo Ag & Co. Kg Dosieranordnung und Dosiervorrichtung

Also Published As

Publication number Publication date
DE102023109505A1 (de) 2024-10-17

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