EP3594498B1 - Système avec un dispositif de recyclage des gaz - Google Patents

Système avec un dispositif de recyclage des gaz Download PDF

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Publication number
EP3594498B1
EP3594498B1 EP19207550.5A EP19207550A EP3594498B1 EP 3594498 B1 EP3594498 B1 EP 3594498B1 EP 19207550 A EP19207550 A EP 19207550A EP 3594498 B1 EP3594498 B1 EP 3594498B1
Authority
EP
European Patent Office
Prior art keywords
side channel
accordance
pump
gas
rotor
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.)
Revoked
Application number
EP19207550.5A
Other languages
German (de)
English (en)
Other versions
EP3594498A1 (fr
Inventor
Sebastian Oberbeck
Jonas Becker
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.)
Pfeiffer Vacuum GmbH
Original Assignee
Pfeiffer Vacuum GmbH
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 Pfeiffer Vacuum GmbH filed Critical Pfeiffer Vacuum GmbH
Priority to EP19207550.5A priority Critical patent/EP3594498B1/fr
Publication of EP3594498A1 publication Critical patent/EP3594498A1/fr
Priority to JP2020072213A priority patent/JP7261197B2/ja
Priority to US16/923,191 priority patent/US11542935B2/en
Application granted granted Critical
Publication of EP3594498B1 publication Critical patent/EP3594498B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
    • F04B9/115—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by two single-acting liquid motors, each acting in one direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/022—Multi-stage pumps with concentric rows of vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps

Definitions

  • the invention relates to a system comprising a process device with a space and / or a line for receiving a gas and a recirculation device for the gas.
  • the DE 10 2017 212 861 A1 discloses an oil separation device with a drive device which is formed by a side channel pump.
  • the DE 691 13 616 T2 discloses a side channel pump.
  • the DE 25 59 667 A1 discloses a liquid ring seal with a pumpable geometry, the geometry being designed as a side channel pump.
  • the EP 3 176 527 A1 and the EP 2 045 358 A2 disclose systems with a process device and a recirculation device.
  • Gas recirculation is required in various technical areas. Usually, gas is withdrawn from a larger volume in which a process takes place, processed in a suitable manner and then fed back into the process. To overcome the pressure losses that occur in the gas ducts and any treatment that may be present, a pump is used that can provide the necessary overpressure and volume flow.
  • the properties of the gases or gas mixtures, the general pressure level, the gas volume and the gas temperature are some, but not all, of the parameters that need to be taken into account.
  • Diaphragm compressors or rotary vane compressors are usually found in such known recirculation devices, sometimes also twin-shaft compressors, such as roots, screw or claw compressors (the terms “compressor” and “pump” are used synonymously herein).
  • Diaphragm and rotary vane compressors are subject to friction and wear and therefore require regular maintenance.
  • Diaphragm compressors have a pulsating delivery due to discrete pump chamber volumes, poor scalability due to limited speed variability and discrete volumes, wear on bearings, diaphragms, crankshafts, connecting rods and valves as well as vibrations due to the oscillating movement of diaphragms and connecting rods.
  • Rotary vane compressors depending on their design, have oil or abrasion in the pump chamber, both of which can be disadvantageous for the processes. The limited scalability due to speed due to discrete volumes and friction in the system can also be disadvantageous.
  • the disadvantages set out above are also intended to be overcome.
  • the recirculation pump is a side channel pump.
  • the side channel pump is particularly effective with a simple and inexpensive design in terms of manufacture and operation.
  • the side channel technology is particularly advantageous due to its flow dynamic properties, the almost mechanically frictionless operation and its adaptability to various processes via speed, side channel and rotor blade geometry, number of stages and a large number of available material combinations.
  • the side channel pump works essentially without contact, thus enabling a long service life and is almost wear-free.
  • the side channel pump allows a needs-based adaptation and precise setting of the provided pressure and flow, e.g. by choosing a single or multi-stage design and / or by means of speed control.
  • a rotor blade shape and a side channel shape can be adapted to the gases to be conveyed. Appropriate resistant materials can be used for corrosive media.
  • the side channel pump has only one shaft.
  • a multi-stage side channel pump can also be produced with a single shaft, for example with a plurality of rotors which are arranged on one and the same shaft.
  • the side channel pump is therefore particularly simple and inexpensive to manufacture.
  • the recirculation device now allows a particularly wide range of applications with a simple structure and low manufacturing and operating costs.
  • the recirculation device can, for example, have a processing device for the gas.
  • the processing device can be designed, for example, to clean the gas, to separate out or enrich certain gas components, to add something to the gas or to make the gas usable for a process in some other way or to improve it.
  • the gas can only be partially fed back into the process device.
  • all of the withdrawn gas can be returned or only a part, in particular a certain component.
  • the gas can contain or be, for example, hydrogen, temperature control medium, in particular coolant, and / or CO 2.
  • the gas can contain or be air, helium and / or neon.
  • the gas is present, in particular, at least during operation in the process device, in particular in a room or a line.
  • the side channel pump can for example comprise at least one rotor with a plurality of rotor blades. It can advantageously be provided that the rotor blades are each at least one of straight, arrow-shaped, curved, divided or connected in the direction of movement, or inclined forwards or backwards in the direction of movement. Combinations of these features per rotor blade, per rotor and / or per pump stage are also advantageous.
  • An intermediate space between two rotor blades that are adjacent in the direction of movement can, for example, be flat or have a pointed roof-shaped structure.
  • a flat structure is particularly easy to manufacture.
  • a pointed roof-shaped structure supports a vortex formation of the gas to be conveyed in the Side channel and thus the pumping effect.
  • a ridge edge or a ridge area can for example run essentially parallel to the direction of movement of the blades and / or connect the blades or run at an angle, in particular sloping from one blade to a base of an adjacent blade.
  • the pointed roof-shaped structure can have flat and / or curved, in particular concave, side surfaces.
  • At least one side channel of the side channel pump has an at least essentially circular, oval, elliptical, rectangular or egg-shaped cross-sectional geometry.
  • Other cross-sectional geometries are also possible, for example rounded and / or trapezoidal cross-sections.
  • the cross-sectional geometry of a side channel can be symmetrical or asymmetrical, for example.
  • a side channel of the side channel pump tapers in its cross section in the direction of flow, in particular from an inlet of the side channel to an outlet of the side channel. In this way, particularly good compression can be achieved in a simple manner.
  • a side channel can, for example, be interrupted by a breaker between the outlet and inlet of the side channel or the outlet and inlet can be separated from one another by a breaker.
  • the side channel pump can preferably have one or more stages, in particular two, three, four or five stages.
  • the steps can be arranged offset axially and / or radially, for example.
  • the performance data of the side channel pump, in particular the discharge pressure and gas flow, can thus be adapted particularly easily to a particular application.
  • the side channel pump can, for example, have an, in particular hermetic, seal, in particular with respect to the environment.
  • the parts of the pump that are movable to generate the pumping action that is to say in particular the shaft, rotor, motor rotor and / or movable bearing parts, can be arranged within the seal, that is to say behind the seal in particular from the perspective of the surroundings.
  • the side channel pump can thus be designed in a simple manner for use with corrosive media.
  • the moving parts can for example be encapsulated for the purpose of sealing.
  • the side channel pump has a motor with a rotor, the rotor being arranged in a space that is, in particular hermetically, sealed off from the environment.
  • the rotor can in particular be arranged in a tube.
  • the motor can be a canned motor.
  • the motor can be a permanent magnet motor, in particular with a permanent magnet rotor.
  • the speed of the side channel pump can advantageously be controlled via a frequency converter.
  • the side channel pump can thus be adapted particularly easily and precisely to a particular application and also to certain operating states during a process.
  • a rotor or a rotor shaft of the side channel pump is supported by at least one grease-lubricated bearing.
  • This enables a low-friction bearing run without an expensive, additional lubrication system.
  • the bearing can be designed to be so low-maintenance and there is essentially no need to exchange operating media, as would be the case with oil lubrication under certain circumstances.
  • the pump can have a seal, in particular a hermetic one.
  • all bearings for the rotor shaft are preferably arranged in the region of the recirculated gas, that is to say behind the seal from the perspective of the surrounding region.
  • grease-lubricated bearings enable the pump to be sealed as seldom as possible, at best not at all over its service life. In this way, the maintenance effort can be considerably reduced, since the restoration of a seal, in particular a hermetic one, is usually very complex and requires special expertise.
  • certain gases should not come into contact with the environment for various reasons. This is made much easier by a low-maintenance pump.
  • the rotor, rotor shaft, motor rotor and / or bearings in the area of the recirculated gas.
  • the system according to the invention comprises a process device with a space and / or a line for receiving a gas and a recirculation device through which the gas can be removed from the process device and returned to the process device.
  • the process device is generally designed to carry out a process, the gas being relevant to the process in some way.
  • the gas does not have to be part of the process.
  • the gas can also only act catalytically or in some other way, e.g. be a temperature control medium.
  • the gas can be an essentially pure gas or a gas mixture, such as air. In principle, the gas can also contain particles and / or droplets, for example.
  • the return of the gas can be carried out, for example, for the purpose of processing, for example cleaning, temperature control, separation and / or enrichment.
  • the recirculation device can have a correspondingly designed processing device.
  • the return can, however, for example can also be returned essentially without influencing or changing the gas.
  • the gas can be withdrawn, for example, at an outlet of the process device, in particular with only part of the gas flow being returned at the outlet, and / or the gas can, for example, be returned to an inlet of the process device, in particular with a further gas flow entering the inlet.
  • the system can be a closed system and / or a closed gas circuit can be provided.
  • the advantages of the invention are particularly evident in a process device that includes a laser.
  • the laser can preferably be a gas laser, in particular an excimer or CO 2 laser.
  • a process device that comprises a temperature control device, in particular an air conditioning and / or cooling device, is also advantageous.
  • a gas circulation can be brought about by means of the recirculation device.
  • the temperature control effect of the device can be improved, the advantages according to the invention being particularly well utilized.
  • the process device can, for example, comprise a fuel cell, which can be used, for example, to generate electricity, for example to drive a vehicle engine.
  • the recirculation device can advantageously be arranged to recirculate excess process gas from the fuel cell, in particular hydrogen.
  • the process device comprises a combustion device, in particular an internal combustion engine, for example a vehicle drive.
  • the recirculation device can for example be arranged to recirculate an exhaust gas from the combustion device, in particular to an inlet of the combustion device.
  • the process device can therefore advantageously be part of a vehicle drive.
  • the process device can comprise, for example, any type of reactor, e.g. fuel cell or combustion device, with at least partially gaseous output.
  • the invention also relates to the use of a side channel pump as a recirculation pump of a recirculation device for a gas of a process device, in particular a recirculation device according to the invention as disclosed herein, and in particular a recirculation device that is part of a system according to the invention, as disclosed herein.
  • Fig. 1 shows a side channel pump 20 for use as a recirculation pump in a recirculation device according to the invention for a gas of a process device.
  • the pump 20 In the upper area, the pump 20 is exposed so that a rotor 22 is visible, which rotates to provide a pumping effect.
  • Fig. 2 it can be seen that the pump 20 has only one rotor 22, that is to say is designed in one stage.
  • the rotor 22 rotates with a plurality of rotor blades 24 distributed over its circumference in a side channel 26.
  • the side channel 26 is an annular channel whose cross section is somewhat larger than a respective rotor blade. In the present embodiment, the side channel 26 is essentially rectangular in cross section, but has rounded corners.
  • the rotor 22 is arranged on a shaft 28 of the side channel pump 20.
  • the shaft 28 and thus the rotor 22 are rotationally driven by an electric motor which comprises a stator 30 and a rotor 32.
  • the stator 30 has energized windings, whereas the rotor 32 in this embodiment has a plurality of permanent magnets.
  • the runner 32 is fixed to the Shaft 28 connected. The shaft 28 and thus the rotor 22 are thus driven directly by the electric motor 30, 32.
  • the rotor 22 is designed with curved rotor blades 24 inclined slightly backwards in the direction of movement and with a flat space between the rotor blades 24.
  • the Figs. 3 and 4 show a two-stage side channel pump 20 which has two rotors 22.1 and 22.2 which are mounted on a common shaft 28.
  • the rotors 22.1 and 22.2 rotate in respective side channels 26.1 and 26.2, which here also have an essentially rectangular cross section.
  • a connection 34 of the side channels 26.1 and 26.2 is visible.
  • the rotors 22.1 and 22.2 each have arrow-shaped blades 24 which are inclined slightly backwards in the direction of movement. In the spaces between the blades 24, the rotor 22 is each flat.
  • the direction of movement here preferably runs in the direction of the tips of the respective arrow-shaped blades 24. In principle, however, reverse operation is also possible, for example.
  • the shaft 28 which carries the rotors 22 is driven by an electric motor.
  • the electric motor has a stator 30 with windings and a permanent magnetic rotor 32 which is seated on the shaft 28.
  • the rotor 32 and the shaft 28 are arranged within a tube 36 which is part of a hermetic seal for the pump 20.
  • a tube 36 is also referred to as a can, since it extends through the gap between the rotor 32 and the stator 30 of the electric motor.
  • the electric motor is referred to as a canned motor.
  • the can 36 can be made of fiberglass composite, for example.
  • the rotor 32 and the shaft 28 are therefore off View of the surroundings behind the hermetic seal and in an area which is essentially penetrated by the gas to be conveyed by the pump and has a corresponding pressure level.
  • bearings 38 behind the seal or in the area of the gas to be conveyed are also two bearings 38 behind the seal or in the area of the gas to be conveyed. These are preferably grease-lubricated and / or permanently lubricated.
  • the functional elements arranged in the gas area or behind the seal are therefore essentially capable of functioning independently. In particular, they do not have to be supplied via a line, for example with electricity or equipment.
  • the rotors 22 also run without contact in the housing gaps 40 provided for them.
  • the functional parts in the gas area are therefore extremely wear-resistant and require little maintenance.
  • the hermetic seal of the pump 20 therefore only has to be broken very rarely during dismantling in order to service the pump.
  • FIG Fig. 5 A third embodiment of a side channel pump 20 is shown in FIG Fig. 5 shown.
  • the side channel pump 20 is designed in five stages, that is to say five rotors 22 are provided which rotate in respective side channels 26.
  • the rotors 22 are in turn arranged on a common shaft 28.
  • An in Fig. 5 The indicated area A of the side channel pump 20 is shown in FIG Fig. 6 shown enlarged and rotated by 90 degrees.
  • the side channels 26.1 and 26.2 of the first two pump stages are essentially rectangular, whereas the side channels 26.3, 26.4 and 26.5 of the other pump stages have an essentially oval or egg-shaped cross section.
  • the rotors 22.1 and 22.2 each have curved rotor blades.
  • the rotors 22.3, 22.4 and 22.5 are arrow-shaped.
  • the rotors 22.3, 22.4 and 22.5 also have a pointed roof-shaped structure 42 in the respective intermediate spaces between adjacent rotor blades 24, which supports the pumping effect by promoting a vortex formation of the gas flow in the side channel 26.
  • FIG. 7 various advantageous embodiments of rotors 22 are shown.
  • the rotor 22 of the Fig. 7 has curved rotor blades 24 with shallow spaces.
  • the rotor 22 of the Fig. 8 has planar rotor blades 24 that extend radially. Roof-like structures 42 are provided between the rotor blades 24, a respective ridge edge 44 extending parallel to the direction of movement of the rotor blades 24. The ridge edge 44 connects radially outer ends of the blades 24. These are thus connected rotor blades 24.
  • the surfaces 46 tapering towards the ridge edge 44 are concave.
  • the rotors 22 of the Figures 9 to 11 are all arrow-shaped and differ essentially in size and number of blades or relative blade spacing. They also have a roof-like structure 42 with a respective ridge edge 44 in the space between the blades.
  • the ridge edges 44 of the rotors 22 are the Figures 9 and 10 itself is curved, whereas the ridge edge 44 in Fig. 11 is essentially straight. All ridge edges 44 of the Figures 9 to 11 extend from a respective blade tip to a bottom of an adjacent blade. The rotor blades 24 are therefore not connected.
  • the blades 24 of the rotor 22 of in Fig. 12 are ultimately curved, and they differ in particular in terms of number and size from the embodiment of FIG Fig. 7 differentiate.
  • a system with a process device 50 and a recirculation device 52 is shown, the recirculation system 52 being a Has side channel pump 20 trained recirculation pump.
  • the process device 50 has an inlet 54 and an outlet 56.
  • the inlet 54 is connected to the recirculation device 52 in such a way that a returned gas is fed back into the inlet 54.
  • a further mass flow is also fed to the inlet 54 via a further line.
  • the outlet 56 is connected both to the recirculation device 52 or the side channel pump 20, as well as to a further line which takes up a partial mass flow of the outlet 56.
  • a part of a mass flow that passes through the process device is therefore recirculated.
  • the process device 50 can be a fuel cell, for example.
  • the mass flow can contain hydrogen, for example.
  • Excess hydrogen, which has not been consumed by the fuel cell, is returned to the inlet 54 via the recirculation device 52 in order to be consumed after all.
  • a separator can be provided downstream of the outlet 56, which separator supplies the side channel pump 20 with as large a portion of the excess hydrogen as possible.
  • the process device 50 of the system of Fig. 13 can for example also be a combustion device such as an internal combustion engine.
  • the recirculation device 52 forms an exhaust gas recirculation in that it takes exhaust gas from the mass flow of the outlet 56 and returns it to the supply air flow at the inlet 54.
  • Fig. 14 shows a closed system with regard to the gas flow with process device 50 and recirculation device 52 with side channel pump 20.
  • the gas in process device 50 can be circulated via recirculation device 52 and its side channel pump 20, for example to avoid phase formation of a gas mixture in the process device.
  • FIG Fig. 15 Another system that is closed with regard to the gas flow is shown in FIG Fig. 15 .
  • This system also comprises a process device 50, a recirculation device 52 and a side channel pump 20.
  • the recirculation device 52 of FIG Fig. 15 also comprises a processing device 58 for processing the returned gas.
  • the processing device 58 can be designed for cleaning and / or temperature control of the gas, for example.
  • a processing device can, for example, be part of the recirculation device of Fig. 13 being.
  • the side channels or the side channel pump stages are arranged axially offset. It goes without saying that the side channel pump of the recirculation device according to the invention can also have, for example, radially offset side channel pump stages. A combination of axially and radially offset steps is also possible. Finally, the side channel pump can also be advantageously connected to pump stages which have different pump principles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (15)

  1. Système, comportant
    un dispositif de traitement (50) ayant un volume et/ou un conduit pour recevoir un gaz, et
    un dispositif de recirculation (52) permettant de prélever le gaz hors du dispositif de traitement (50) et de le retourner dans le dispositif de traitement (52),
    le dispositif de recirculation comprenant une pompe de recirculation ; caractérisé en ce que
    la pompe de recirculation est une pompe à canal latéral (20).
  2. Système selon la revendication 1,
    dans lequel le gaz contient de l'hydrogène, un agent de régulation de température et/ou du CO2.
  3. Système selon l'une des revendications précédentes,
    dans lequel la pompe à canal latéral (20) comprend au moins un rotor (22) ayant une pluralité de pales de rotor (24), et
    les pales de rotor (24) ont chacune au moins l'une des formes suivantes :
    droite, oblique, en forme de flèche, incurvée, divisée, non divisée, ou inclinée vers l'avant ou l'arrière en direction du mouvement.
  4. Système selon l'une des revendications précédentes,
    dans lequel la pompe à canal latéral (20) comprend au moins un rotor (22) ayant une pluralité de pales de rotor (24), et
    un volume intermédiaire entre deux pales de rotor (24) adjacentes en direction du mouvement est plat ou présente une structure en forme de toit pointu (42).
  5. Système selon l'une des revendications précédentes,
    dans lequel au moins un canal latéral (26) de la pompe à canal latéral (20) présente une géométrie de section transversale en forme circulaire, ovale, elliptique, rectangulaire ou ovoïde.
  6. Système selon l'une des revendications précédentes,
    dans lequel au moins un canal latéral (26) de la pompe à canal latéral (20) se rétrécit en section transversale dans le sens de l'écoulement.
  7. Système selon l'une des revendications précédentes,
    dans lequel la pompe à canal latéral (20) est de conception à un ou plusieurs étages.
  8. Système selon l'une des revendications précédentes,
    dans lequel la pompe à canal latéral (20) présente un joint d'étanchéité, et les parties de la pompe (20) qui sont mobiles pour engendrer l'effet de pompage sont disposées à l'intérieur du joint d'étanchéité.
  9. Système selon l'une des revendications précédentes,
    dans lequel la vitesse de rotation de la pompe à canal latéral (20) est contrôlable via un convertisseur de fréquence.
  10. Système selon l'une des revendications précédentes,
    dans lequel un rotor (24) de la pompe à canal latéral (20) est supporté par au moins un palier (38) lubrifié à la graisse.
  11. Système selon l'une des revendications précédentes,
    dans lequel est prévu un circuit de gaz fermé.
  12. Système selon l'une des revendications précédentes,
    dans lequel le dispositif de traitement (50) comprend un laser.
  13. Système selon l'une des revendications précédentes,
    dans lequel le dispositif de traitement (50) comprend un dispositif de régulation de température.
  14. Système selon l'une des revendications précédentes,
    dans lequel le dispositif de traitement (50) comprend une pile à combustible.
  15. Système selon l'une des revendications précédentes,
    dans lequel le dispositif de traitement (50) comprend un dispositif de combustion.
EP19207550.5A 2019-11-06 2019-11-06 Système avec un dispositif de recyclage des gaz Revoked EP3594498B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19207550.5A EP3594498B1 (fr) 2019-11-06 2019-11-06 Système avec un dispositif de recyclage des gaz
JP2020072213A JP7261197B2 (ja) 2019-11-06 2020-04-14 ガス再循環装置及びこれを有するシステム
US16/923,191 US11542935B2 (en) 2019-11-06 2020-07-08 Gas recirculation device and system having such a device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19207550.5A EP3594498B1 (fr) 2019-11-06 2019-11-06 Système avec un dispositif de recyclage des gaz

Publications (2)

Publication Number Publication Date
EP3594498A1 EP3594498A1 (fr) 2020-01-15
EP3594498B1 true EP3594498B1 (fr) 2022-01-05

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Application Number Title Priority Date Filing Date
EP19207550.5A Revoked EP3594498B1 (fr) 2019-11-06 2019-11-06 Système avec un dispositif de recyclage des gaz

Country Status (3)

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US (1) US11542935B2 (fr)
EP (1) EP3594498B1 (fr)
JP (1) JP7261197B2 (fr)

Citations (36)

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US20210131440A1 (en) 2021-05-06
EP3594498A1 (fr) 2020-01-15

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