EP3356678B1 - Pompe à palettes multicellulaire - Google Patents

Pompe à palettes multicellulaire Download PDF

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Publication number
EP3356678B1
EP3356678B1 EP16770911.2A EP16770911A EP3356678B1 EP 3356678 B1 EP3356678 B1 EP 3356678B1 EP 16770911 A EP16770911 A EP 16770911A EP 3356678 B1 EP3356678 B1 EP 3356678B1
Authority
EP
European Patent Office
Prior art keywords
chamber
rotary vane
vane pump
rotor
oil
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.)
Active
Application number
EP16770911.2A
Other languages
German (de)
English (en)
Other versions
EP3356678A1 (fr
Inventor
Jean-Francois Aubert
Christophe DESPESSE
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.)
Leybold GmbH
Original Assignee
Leybold 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
Priority claimed from DE202015006922.3U external-priority patent/DE202015006922U1/de
Priority claimed from DE202016005229.3U external-priority patent/DE202016005229U1/de
Application filed by Leybold GmbH filed Critical Leybold GmbH
Publication of EP3356678A1 publication Critical patent/EP3356678A1/fr
Application granted granted Critical
Publication of EP3356678B1 publication Critical patent/EP3356678B1/fr
Active 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F04C23/003—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle having complementary function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts

Definitions

  • the invention relates to a multi-stage rotary vane pump.
  • Rotary vane pumps have a usually cylindrical rotor element which is arranged eccentrically in a pump chamber which is also of cylindrical design.
  • Several, usually three, slides are connected to the rotor element. These are arranged in slots and are essentially radially displaceable. The outer edges of the slides rest on the interior of the pump chamber.
  • a space formed adjacent to the slide has a large volume. Due to the eccentricity, this volume decreases continuously up to the outlet when the rotor element rotates in the pump chamber. This results in a compression of the pumped gas.
  • Multi-stage rotary vane pumps are also known. In these, the inlet of a first stage is connected to a space to be evacuated and the outlet of the first stage is connected to the inlet of the second stage, the outlet of which is then connected, for example, to the atmosphere.
  • Such a two-stage rotary vane pump is for example in EP 0 711 384 described.
  • the two rotors of the two stages are mounted on a common shaft. Between the two rotors a circular partition is placed.
  • the rotor shaft is mounted in a housing via ball bearings or bushings.
  • the assembly of such a multistage rotary vane pump is complex and expensive.
  • U.S. 2,462,732 discloses a multi-stage rotary vane pump with a rotor shaft that carries a plurality of rotor elements. A pump chamber is provided for each rotor element. The rotor elements are formed in one piece with the rotor shaft.
  • CN 103498795 A discloses a two-stage rotary vane compressor with a multi-part housing and a two-part annular partition.
  • the object of the invention is to create a multi-stage rotary vane pump that can be manufactured inexpensively.
  • the multistage rotary vane pump according to the invention has at least two rotor elements, each of which has slides arranged to be displaceable in slots.
  • the rotor elements are carried by a common rotor shaft.
  • a pump chamber is provided for each rotor element.
  • the rotor shaft which in particular has cylindrical rotor elements, is arranged eccentrically to the suction chambers.
  • a pump stage is thus formed by a suction chamber in which a rotor with vanes is arranged on a shaft.
  • the rotor elements are formed in one piece together with the rotor shaft.
  • it is therefore no longer necessary to mount the individual rotor elements on the rotor shaft. This considerably reduces the assembly effort. Furthermore, the manufacturing and assembly costs are also reduced. Furthermore, required tolerances between the individual for assembly the rotor shaft to be mounted rotor elements and the associated inaccuracies are avoided.
  • an intermediate wall for separating adjacent pump stages is arranged between two pump stages.
  • the partition wall is constructed in several parts, in particular in two parts.
  • the partition wall thus has several, in particular two partition wall elements.
  • the intermediate wall elements In the assembled state, the intermediate wall elements have an in particular round, preferably eccentrically arranged opening through which the rotor shaft leads.
  • the individual intermediate wall elements are designed in the shape of a ring segment.
  • the outer circumference of the intermediate wall is also circular.
  • two intermediate wall elements in which two intermediate wall elements are provided, it is particularly preferred that these are essentially identical and each have a semicircular shape.
  • the manufacturing costs are further reduced. This also simplifies assembly, since it is not possible to mix up the components.
  • centering elements such as centering pegs or centering pins are provided on the contact surface of the intermediate wall elements.
  • the halves can also consist of fractured parts and only be held together by two screws.
  • the pumping chambers are formed by a common, one-piece housing element.
  • the at least two pumping chambers can have the same or different diameters.
  • the at least one partition wall, which forms a circular ring in the assembled state, can also have the corresponding diameter. In particular, it is a cylindrical one
  • the one-piece rotor that is to say the rotor shaft with the rotor elements and also the mounted slide, is preassembled together with the at least one partition.
  • This preassembled component can then be pushed in the axial direction into the housing element forming the suction chambers.
  • further housing elements which preferably have the electric motor, the control, the cooling, the oil supply or the like, can be connected.
  • the multistage rotary vane pump has a first rotor element arranged in a first pump chamber and a last rotor element in the direction of flow, arranged in a last pump chamber.
  • the first pump chamber is connected to the pump inlet and the last pump chamber to the pump outlet.
  • the pump outlet is connected to an oil reservoir, whereby the medium enriched with oil due to the oil lubrication of the rotary valve is expelled through the pump outlet.
  • the outlet of the pump is connected to the oil reservoir.
  • a valve such as a flap valve, is usually arranged between the outlet and the oil reservoir and is preferably arranged at least partially below the oil level so that the oil seals the valve.
  • the oil is separated from the conveyed gaseous medium directly in the oil reservoir.
  • the oil reservoir has two interconnected chambers.
  • one of the chambers is preferably designed as an oil chamber and the other chamber as a filter chamber.
  • the two chambers are arranged one behind the other in the direction of flow and are flowed through one after the other.
  • the mixture of oil and the compressed gas first enters the oil chamber. In this, a large part of the oil is separated from the gas due to gravity.
  • the gas-oil mixture then flows into the filter chamber, the filter chamber in particular having a filter device connected to the inlet of the filter chamber. This filter is used for further oil separation.
  • the oil returns to the pump's oil circuit via a return channel. In particular, the backflow channel is connected to the chamber.
  • the invention is explained in more detail below using a preferred embodiment which is a two-stage rotary vane pump.
  • a rotary vane pump has two in Fig. 1 pumping chambers 12 arranged one behind the other and arranged coaxially to one another.
  • a rotor element 14 is arranged eccentrically to the cylindrically designed suction chamber 12.
  • Each rotor element 14 carries a slide 18 in essentially radially extending slots 16. The slide 18 rest on an inner wall 20 of the suction chamber 12 and are pressed in the direction of the inner wall 20 in particular by centrifugal forces.
  • Chambers 22 are formed between two adjacent slides, the size of which increases from one inlet 24 to one Outlet 26 is reduced when the rotor element 14 rotates in the pump chamber 12.
  • a valve for example in the form of a reed valve 28, is arranged at the outlet 26 in order to prevent the conveyed medium from flowing back into the pump chamber 12.
  • the reed valve can be arranged in an oil chamber 30, an oil level of the oil 32 partially covering the reed valve 28 for sealing.
  • the conveyed medium is ejected from the oil chamber 30 via an outlet filter element and an outlet 34, since the in Fig. 1
  • the stage of a rotary vane pump shown is the second or last stage.
  • the provision of an outlet filter element allows an oil-free outlet gas. In a first stage, the channel provided at the outlet 26 is connected to the inlet 24 of the next or second stage.
  • a rotor shaft 36 ( Fig. 2 ) formed in one piece with the two rotor elements 14, 38.
  • the rotor element 14 is the one in the second pumping stage ( Fig. 1 ) arranged rotor element.
  • the rotor element 38 which is arranged on the first pumping stage, is of cylindrical design, corresponding to the rotor element 14. Due to the larger width and / or the larger diameter of the rotor element 38, the chambers of the first pumping stage are larger than the chambers 22 ( Fig. 1 ) of the second pumping stage. Otherwise the elements are technically identical.
  • the slide is also similar to the design of the slide 18 with the exception of a greater width and height.
  • the rotor shaft 36 can be stepped several times and can be used, for example, to accommodate bearing rings of the ball bearings or bushings. Corresponding bearing seats are formed in particular by the areas 40 of the rotor shaft 36.
  • the electric motor can be arranged in a region 42 of the rotor shaft 36.
  • a fan wheel for example, can be arranged in an area 44.
  • the intermediate wall 46 has two intermediate wall elements 48.
  • the two intermediate wall elements are each designed as semicircular elements.
  • Centering elements in the form of centering pins 52 are provided in openings on the two contact surfaces 50 of the two intermediate wall elements 48, which abut against one another in the assembled state.
  • the halves can also be made by fracturing.
  • Two fastening elements in the form of screws 54 are also provided for further assembly. These are accessible via openings 56 provided in the upper partition element 48 in the exemplary embodiment shown.
  • the housing element 10 is as in FIG Fig. 4 shown schematically in one piece. To this extent, the housing 10 has a cylindrical recess 58. This is closed by a housing cover 60. Ball bearings or bushings 62 for supporting the rotor shaft 36 are arranged in the housing cover 60 and in the opposite wall of the housing element 10. Furthermore, the two outlets are visible in the illustrated section of the housing element 10. This is, on the one hand, the outlet 26 of the second pumping stage and an outlet 64 of the first pumping stage. The outlet 64 conveys medium as shown by the arrow 66 and is connected to the in Fig. 4 invisible inlet connected to the second stage. For the sake of clarity, the position of the partition 46 in the assembled state is shown in dashed lines. The two pumping chambers 12 and 68 of the two pump stages are separated from one another by the partition 46.
  • the individual slides are inserted into the slots in the two rotor elements 14, 38 ( Fig. 2 ) used.
  • the partition 46 is mounted between the two rotor elements 14, 38.
  • This assembly is then in Fig. 4 inserted from the left into the cylindrical opening 58 formed by the housing element 10.
  • the second stage slides are then installed.
  • the housing cover 60 is then mounted. This is followed by the assembly of the remaining components of the vacuum pump, so that a very simple and inexpensive assembly is realized.
  • a preferred embodiment of a rotary vane pump according to the invention has the above in particular on the basis of Figures 1 and 2 described rotor shaft 36 with two rotor elements 14, 38, wherein the rotor shaft 36 and the rotor elements 14, 38 are integrally formed. Between the two rotor elements 14, 38 is the in Figure 3 illustrated two-part intermediate wall 46 is arranged.
  • the rotor shaft 36 also carries on the in Figure 5
  • a first fan wheel 70 is located on the left-hand side.
  • an inner housing cover 72 is arranged on the left-hand side, which axially closes the suction chamber 74 in which the larger rotor element 38 is arranged.
  • a shaft seal not shown in detail, is arranged between the inner housing cover 72 and the shaft 36.
  • the fan 70 is surrounded by a fan housing 76. This is on the in Figure 5 left side open or has slot-shaped openings. Furthermore, the fan housing 76 is connected to a housing 78 of the pump.
  • a pump inlet 80 which is connected to the larger pump chamber 74, is provided on the upper side of the housing.
  • the housing 78 has an inwardly projecting wall 84, which in turn is sealed with respect to the shaft 36.
  • the smaller, last suction chamber 82 in the flow direction is connected to an oil reservoir via an outlet line, as in FIG Figure 1 illustrated explained above.
  • the oil reservoir is laterally next to the pump, ie in Figure 5 arranged behind the pump as an oil reservoir 86.
  • the medium to be used is thus ejected into the oil reservoir 86 and then reaches an outlet 88.
  • an electric motor 90 is connected to the rotor shaft 36.
  • the rotor shaft 36 is mounted in an internal bearing cover 72 and 94, respectively, via bearing elements 92.
  • a further fan 96 is connected to the rotor shaft 36 on the right-hand side. This is in turn surrounded by a fan housing 98.
  • a control device 100 for controlling the electric motor and the other components of the vacuum pump is provided on an upper side of the pump housing 78. The controller can also be connected to sensors, etc.
  • the gas-oil mixture flows through the outlet 26 of the last pump chamber 82 into the oil reservoir 86 ( Fig. 6 ).
  • the gas-oil mixture first flows into an oil chamber 102 of the oil reservoir 86.
  • Oil 104 collects in the oil chamber 102 due to the force of gravity.
  • the remaining mixture of oil and gas flows out of the oil chamber 102 into the filter chamber 106.
  • the gas-oil mixture occurs here through an inlet 108 directly into a filter device 110 which is arranged in the filter chamber 106.
  • the filter device 110 filters out oil which is fed back into the oil circuit via a return duct 112.
  • the remaining gas, which has been cleaned of oil flows out, as shown by arrow 114, through outlet 88 of the vacuum pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Claims (10)

  1. Pompe rotative à palettes à plusieurs étages, comportant
    au moins deux éléments de rotor (14, 38) qui ont chacun des palettes (18) disposées de manière à pouvoir se déplacer dans des fentes (16),
    un arbre de rotor (36) portant les éléments de rotor (14, 38), les éléments de rotor (14, 38) et l'arbre de rotor (36) étant formés d'un seul tenant,
    une chambre d'aspiration (12, 68) par élément de rotor (14, 38), l'arbre de rotor (36) étant agencé de manière excentrée dans les chambres d'aspiration (12, 68) et chaque chambre d'aspiration (12, 68) formant un étage de pompe,
    et une paroi intermédiaire (46) agencée entre deux étages de pompe pour séparer des étages de pompe adjacents (12, 68),
    caractérisée en ce que
    la paroi intermédiaire (46) est réalisée en plusieurs parties, en particulier en deux parties, et comprend des éléments de paroi intermédiaires (48) qui sont réalisés sous la forme de segments annulaires,
    les chambres d'aspiration (12, 68) sont formées par un élément de boîtier (10) commun réalisé d'un seul tenant, et
    le rotor d'un seul tenant avec ladite paroi intermédiaire préassemblée (46), au moins au nombre de une, peut être inséré en direction axiale dans l'élément boîtier (10) formant les chambres d'aspiration (12, 68).
  2. Pompe rotative à palettes à plusieurs étages selon la revendication 1, caractérisée en ce que sont prévus deux éléments de paroi intermédiaires (48) en forme de demi-segments annulaires, en particulier non concentriques.
  3. Pompe rotative à palettes à plusieurs étages selon la revendication 2, caractérisée en ce que sont prévus des éléments de centrage (52), en particulier des broches de centrage, au niveau de surfaces d'appui (50) des éléments de paroi intermédiaires (48).
  4. Pompe rotative à palettes à plusieurs étages selon l'une des revendications 1 à 3, caractérisée en ce qu'un boîtier entourant les chambres d'aspiration (74, 82) présente une entrée (80) reliée à une première chambre d'aspiration (74) et une sortie (88) reliée à une dernière chambre d'aspiration (82).
  5. Pompe rotative à palettes à plusieurs étages selon la revendication 4, caractérisée en ce qu'un réservoir d'huile (86) est disposé entre la dernière chambre d'aspiration (82) et la sortie (88), de sorte qu'un mélange de gaz et d'huile s'écoule depuis la chambre d'aspiration (82) jusque dans le réservoir d'huile (86).
  6. Pompe rotative à palettes à plusieurs étages selon la revendication 5, caractérisée en ce que le réservoir d'huile (86) est disposé latéralement à côté de la pompe rotative à palettes.
  7. Pompe rotative à palettes à plusieurs étages selon la revendication 4 ou 5, caractérisée en ce que le réservoir d'huile (86) présente deux chambres (102, 106) qui sont reliées l'une à l'autre, une chambre étant réalisée de préférence sous la forme d'une chambre à huile (102) dans laquelle l'huile sortant de la dernière chambre d'aspiration (82) est recueillie.
  8. Pompe rotative à palettes à plusieurs étages selon la revendication 7, caractérisée en ce qu'une chambre est réalisée sous la forme d'une chambre de filtration (106) pour la séparation de l'huile et du gaz, la chambre de filtration (106) étant de préférence montée en aval de la chambre à huile (102) dans la direction de l'écoulement.
  9. Pompe rotative à palettes à plusieurs étages selon la revendication 8, caractérisée en ce que la chambre de filtration (106) présente un dispositif de filtration (110) reliée à une entrée (108) de la chambre de filtration (106).
  10. Pompe rotative à palettes à plusieurs étages selon la revendication 8 ou 9, caractérisée en ce que la chambre de filtration (106) est reliée à la sortie (88) de la pompe rotative à palettes.
EP16770911.2A 2015-10-02 2016-09-20 Pompe à palettes multicellulaire Active EP3356678B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202015006922.3U DE202015006922U1 (de) 2015-10-02 2015-10-02 Mehrstufige Drehschieberpumpe
DE202016005229.3U DE202016005229U1 (de) 2016-08-26 2016-08-26 Mehrstufige Drehschieberpumpe
PCT/EP2016/072227 WO2017055129A1 (fr) 2015-10-02 2016-09-20 Pompe à palettes multicellulaire

Publications (2)

Publication Number Publication Date
EP3356678A1 EP3356678A1 (fr) 2018-08-08
EP3356678B1 true EP3356678B1 (fr) 2021-10-27

Family

ID=57003489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16770911.2A Active EP3356678B1 (fr) 2015-10-02 2016-09-20 Pompe à palettes multicellulaire

Country Status (9)

Country Link
US (1) US11592024B2 (fr)
EP (1) EP3356678B1 (fr)
JP (1) JP7313823B2 (fr)
KR (1) KR102572044B1 (fr)
CN (2) CN114412786A (fr)
CA (1) CA2998448C (fr)
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US11592024B2 (en) 2023-02-28
CN108291543A (zh) 2018-07-17
US20180298902A1 (en) 2018-10-18
SG11201801043WA (en) 2018-03-28
CA2998448C (fr) 2023-09-26
EP3356678A1 (fr) 2018-08-08
WO2017055129A1 (fr) 2017-04-06
CA2998448A1 (fr) 2017-04-06
KR102572044B1 (ko) 2023-08-28
ES2899908T3 (es) 2022-03-15
KR20180064392A (ko) 2018-06-14
JP7313823B2 (ja) 2023-07-25
CN114412786A (zh) 2022-04-29
JP2018529879A (ja) 2018-10-11

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