EP3431764B1 - Pompe sinusoïdale - Google Patents

Pompe sinusoïdale Download PDF

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Publication number
EP3431764B1
EP3431764B1 EP18184343.4A EP18184343A EP3431764B1 EP 3431764 B1 EP3431764 B1 EP 3431764B1 EP 18184343 A EP18184343 A EP 18184343A EP 3431764 B1 EP3431764 B1 EP 3431764B1
Authority
EP
European Patent Office
Prior art keywords
slide
pump
sealing
channel
slide guide
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
EP18184343.4A
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German (de)
English (en)
Other versions
EP3431764A1 (fr
Inventor
Manfred Sommer
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.)
Marschall Quentin
Marschall Rouven
Original Assignee
Marschall Quentin
Marschall Rouven
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 Marschall Quentin, Marschall Rouven filed Critical Marschall Quentin
Publication of EP3431764A1 publication Critical patent/EP3431764A1/fr
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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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/356—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C2/3568—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member with axially movable vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/80—Repairing methods
    • 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

Definitions

  • the invention relates to a sinus pump designed as a positive displacement pump.
  • Sinus pumps are particularly suitable for pumping thin, viscous and viscous products, especially those with lumpy parts.
  • lumpy goods such as strawberries can also be conveyed with such a pump without visibly damaging these goods.
  • Such pumps are mainly used in the chemical, pharmaceutical and food processing industries.
  • a pump of the type mentioned is known.
  • This pump has a rotor which is rotatably mounted on a drive shaft which can be connected to a motor drive.
  • the rotor has a radially protruding, wavy rotating rotor collar.
  • the pump inlet and outlet are separate. The inlet communicates with a suction space and the outlet with an outlet space. These two pump rooms are connected to each other via a pump channel.
  • the drive shaft driving the rotor extends far into the pump chamber. Your bearings are located in the area of the rear housing wall and on the other outside the pump housing in a hollow cylindrical shaft support. The rotor is thus seated on the collar end area of the drive shaft.
  • a sealing slide ensures that the medium conveyed through the pump channel from the inlet to the outlet cannot flow back past the sealing slide and back to the inlet.
  • the sealing slide can be adjusted in the axial direction by means of the rotor collar. During the rotary movement of the rotor, the sealing slide must therefore continuously bear tightly on both sides of the rotor collar. In addition, the sealing slide rests on the slide guide supporting it. Adequate sealing must also be provided between the rotor collar and the walls of the pump channel in the region of the stator that delimit it in the axial direction, in order not to impair the delivery effect and thus the efficiency of the pump.
  • a good seal of the pump channel in the area of the stator is also desirable for hygienic reasons in order to prevent product components from migrating into the gaps between the individual components.
  • This seal is to be achieved with interchangeable and interchangeable moldings for the pump channel containing stator parts which fit as closely as possible to the inside of the housing.
  • the invention has for its object to provide an improved sinus pump of the type mentioned, which is particularly low-maintenance and in which the components particularly affected by wear can be quickly replaced.
  • the sine pump according to the invention in accordance with the main claim is characterized in that the pump housing has a recess.
  • the slide guide for the sealing slide can be inserted in this recess in a fixed position.
  • the material of the sealing slide is usually dependent on the area of application of the pump.
  • an abrasion-resistant plastic is selected as the material for the sealing slide.
  • highly viscous media for example silicones with high toughness - a metallic material can also be used.
  • the sealing slide is subject to a certain amount of wear, so that an exchange of the sealing slide is necessary after a certain period of use.
  • the slide guide for the sealing slide can be removed within a few moments, so that the sealing slide can be easily replaced. All that needs to be done is to release the slide guide.
  • the pump cover on the other hand, does not have to be removed; the sine pump can also be used at its place of use remain. The production process is therefore only interrupted for a very short time.
  • the slide guide can preferably be attached to the pump housing surrounding the recess. This can be done for example via one or more screw fastenings. Such a fastening is economically inexpensive to manufacture and, if necessary, can be released quickly and using conventional tools.
  • the slide guide can be inserted precisely into the recess. This can be supported, for example, by profiling the recess.
  • the recess can have a corresponding inner contour, which is picked up again by a head region of the slide guide. In this way, a particularly tight and non-rotatable position fixation of the slide guide can be achieved.
  • the recess for the slide guide can run in particular in the longitudinal direction of the sine pump.
  • the longitudinal direction of the sinus pump corresponds to the axis of the drive shaft of the sinus pump. Since the sealing slide must be slidably mounted in the axial direction and thus in the longitudinal direction of the sinus pump, the recess can be made relatively narrow and thus small.
  • the cutout for the slide guide is generally arranged in the area of the housing surface that lies between the inlet and the outlet of the sinus pump.
  • the rotor collar has a total of two boundary surfaces, which are arranged at a certain mutual distance from one another.
  • the two boundary surfaces limit the rotor collar in the axial direction and leave the pump channel free between them.
  • the sealing slide is arranged between the two boundary surfaces.
  • the slide guide can have a slide channel.
  • the sealing slide can be slidably mounted in the slide channel.
  • the sealing slide can preferably be guided in the slide channel via a tongue and groove connection.
  • the tongue and groove connection serves both to guide the sealing slide and to seal (chicane).
  • the sealing slide can preferably have a groove running in the longitudinal direction on its outwardly facing upper side.
  • the slide guide can have a spring running in the longitudinal direction on its inward-facing underside.
  • the groove of the tongue and groove connection could, for example, also be designed as a dovetail groove; in this case the spring would be designed as a dovetail spring.
  • the slide channel can preferably have a wall unit on both sides at least in regions. These wall units can be designed so high that the sealing slide can rest against the wall units over approximately its entire height. Through the wall units, the bending moment of the sealing slide that occurs due to the pressurization can be absorbed by the wall units, so that no twisting and the associated tilting of the sealing slide can take place. Due to the formation of a total of two wall units, which are arranged on both sides of the sealing slide, the sine pump is suitable for both left and right-hand rotation. If only one wall unit was designed, the pump could only be operated in left-hand rotation or only in clockwise rotation.
  • the wall units do not have to be formed over the entire length of the slide channel.
  • the wall units should Cover the area of the pump channel to a large extent to enable the sealing slide to be guided for as long as possible.
  • a plurality of slots can preferably be present in the wall units. These slots are used to exchange wear parts that may be contained in the product to be conveyed. Such wear parts can be, for example, the small grains of strawberries that can be present when fruit yoghurt is conveyed.
  • wear parts can be, for example, the small grains of strawberries that can be present when fruit yoghurt is conveyed.
  • the wall unit may also consist of rod-shaped elements, so that there may be relatively large distances between the individual elements and thus also relatively wide slots in the wall elements.
  • the sealing slide When servicing the sinus pump, the sealing slide should preferably be able to be removed together with the slide guide.
  • the sealing slide can be mounted on the at least one of the two wall units of the slide guide by means of a tongue and groove connection.
  • the sealing slide can preferably have a groove running in the longitudinal direction on one of its side faces.
  • at least one of the two wall units can have a spring running in the longitudinal direction on its inside.
  • the groove of the tongue and groove connection could, for example, also be designed as a dovetail groove; in this case the spring would be designed as a dovetail spring.
  • relief channels can be provided in the corner region of the slide channel. Through these relief channels, the pump medium can be discharged both into the suction chamber and into the pressure chamber of the sinus pump. This also significantly relieves the pressure on the sealing slide compared to sine pumps known from the prior art. With conventional sinus pumps, the sealing slide is loaded twice, since it picks up the pending stroke Pressure from the opposite side must overcome. In contrast, the sealing slide in the sinus pump according to the invention moves in a pressure-neutral space.
  • the schematically illustrated sine pump 10 has a pump housing 12 with a circular cover 14.
  • the cover 14 is fastened to a jacket wall 18 by means of two screws 16.
  • additional screws 16 can be used for fastening.
  • a hollow cylindrical shaft support 20 projects through the rear wall 24 into the interior of the housing 12.
  • the material and cross-section of the shaft support 20 are designed such that its collar end region ending in the housing 12 is practically none under load has deflection relevant for the operation of the sinus pump 12.
  • a drive shaft projects centrally through the shaft support 20. The end of the drive shaft located outside the housing 12 can be connected in a rotationally fixed manner to a motor drive, not shown in the drawing, so that the drive shaft can be driven in both directions of rotation.
  • a rotor 30 is fixed in a rotationally fixed manner to the collar end of the drive shaft which ends in the interior of the housing 12.
  • a rotor collar 32 is integrally formed on the rotor 30.
  • This rotor collar 32 has a circumferential wave-like shape, as has already been mentioned in the prior art DE 34 18 708 A1 in detail is described.
  • the pump channel 38 is located between the two boundary surfaces 34, 36 of the rotor collar.
  • a medium can be conveyed from the inlet 40 to the outlet 42 of the sinus pump 12 via the pump channel.
  • the longitudinal axes of the inlet 40 and the outlet 42 are at right angles to one another.
  • the pump channel 38 is delimited by a stator 44.
  • the stator 44 is generally mounted on the housing 12 by means of one or more screws and is thus secured against rotation.
  • the pump chamber is divided into a pressure chamber and a suction chamber by the stator 44.
  • the stator 44 spans an angle of approximately 180 degrees, so that the area of the inlet 40 and the area of the outlet 42 are each left free.
  • the stator 44 is preferably made of a wear-resistant plastic, so that the inner diameter can also be used as a bearing for the shaft carrier 20.
  • the suction space and the outlet space are separated from each other in terms of pressure by a sealing slide 50.
  • the sealing slide 50 can be moved back and forth within a slide guide 52 in the axial direction 22.
  • the slide guide 52 has a head part 54, to which a U-shaped cantilever part 56 is fastened in the present example.
  • the sealing slide 50 is mounted between the two wall units 58, 60 of the cantilever part 56.
  • the two wall units 58, 60 do not extend over the entire length of the head part 54; rather, the two wall units 58, 60 are only present in the central region of the head part 54.
  • the head part 54 can be fastened to the housing 12 of the sinus pump 10 by means of several screws 62.
  • the housing 12 of the sinus pump 10 has a cutout 64.
  • the cutout 64 is arranged between the inlet 40 and the outlet 42 in the present example.
  • the dimensions of the recess 64 are selected such that the slide support 52 can be inserted, fixed and screwed to the pump housing 12 with a precise fit.
  • the central arrangement of the sealing slide 50 and the slide guide 52 between the two boundary surfaces 34, 36 of the rotor collar 32 has the advantage that almost no transport medium has to be displaced. This means that the product to be transported is significantly less damaged.
  • the first embodiment accordingly 1 to 3 shows a very simple design of sealing slide 50 and slide guide 52.
  • the slide guide 52.2 has a head part 54.2 which, in its essentially rectangular outer contour, has two arcuate indentations 70, 72. Accordingly, the recess in the pump housing would also have a correspondingly profiled outer contour. This profiling prevents the slide guide 52.2 from rotating during operation of the pump 10.
  • the circular-arc-shaped recesses 70, 72 enable the slide guide 52.2 to be removed from the housing 12 even when pipelines are connected to the inlet 40 and the outlet 42. It is therefore not necessary to dismantle the sine pump 12 to replace the slide guide 52.2 and / or the sealing slide 50.2.
  • the head part 54.2 can be fastened to the pump housing by means of four screws 62. Two protrude from the middle of the head part 54.2 Wall units 58.2, 60.2 downwards. The two wall units 58.2, 60.2 are only present in the central region of the head part 54.2.
  • the sealing slide 50.2 can be guided in a slide channel 74 between the two wall units 58.2, 60.2.
  • the two wall units 58.2, 60.2 each have five rod-shaped elements 76, so that both wall units 58.2, 60.2 have a plurality of slots 78.
  • Relief channels 80 are formed in the corner region of the slide channel 74.
  • the relief channels 80 of the slide guide 52.2 align with relief channels 46 of the sine pump 10.
  • a spring 82 is present on the head part 54.2 of the slide guide 52.2.
  • the spring 82 is present approximately in the middle of the two wall units 58.2, 60.2 and runs parallel to these.
  • the sealing slide 50.2 has a corresponding groove 84 on its upper side. This tongue and groove connection secures the sealing slide 50.2 against twisting and bending.
  • the sealing slide 50.2 should generally also be able to be removed together with the slide guide 52.2.
  • an inwardly pointing pin 90 is present on one of the two wall units 58.2 in the present example. This pin 90 projects into a groove 92 provided in the outside of the sealing slide 50.2.
  • the sine pump 10.3 has a pump housing 12.3 with a circular cover 14.3.
  • the cover 14.3 is fastened to a jacket wall 18.3 by means of screws.
  • a hollow cylindrical shaft support 20.3, the cylinder axis of which coincides with the longitudinal axis 22 of the sine pump 10.3, projects through the rear wall 24.3 into the interior of the housing 12.3.
  • a drive shaft projects centrally through the shaft support 20.3.
  • a rotor 30.3 is fixed in a rotationally fixed manner to the collar end of the drive shaft which ends in the interior of the housing 12.3.
  • a rotor collar 32.3 is integrally formed on the rotor 30.3.
  • This rotor collar 32.3 has two circumferential undulating boundary surfaces 34.3, 36.3.
  • the pump channel 38.3 is located between the two boundary surfaces 34.3, 36.3 of the rotor collar.
  • a medium can be conveyed from the inlet 40.3 to the outlet 42.3 of the sinus pump 12.3 via the pump channel 38.3.
  • the longitudinal axes of the inlet 40.3 and the outlet 42.3 are at right angles to one another.
  • the pump channel 38.3 is delimited by a stator 44.3.
  • the stator 44.3 divides the pump chamber into a pressure chamber and a suction chamber.
  • the suction space and the outlet space are separated from each other in terms of pressure by a sealing slide 50.3.
  • the sealing slide 50.3 can be moved back and forth within a slide guide 52.3 in the axial direction 22.
  • the sealing slide 50.3 is arranged between the two boundary surfaces 34.3, 36.3 and is moved by the movement of the two boundary surfaces 34.3, 36.3 during the rotation of the rotor 30.3.
  • the slide guide 52.3 has two guide grooves 100, 102 which are formed in the inside of the housing 12.3.
  • the slide guide 52.3 has a plurality of setscrews 104 which pass through the housing 12.3 protrude and frame the sealing slide 50.3 sideways.
  • the central arrangement of the sealing slide 50.3 between the two boundary surfaces 34.3, 36.3 of the rotor collar 32.3 has the advantage that almost no transport medium has to be displaced. This creates a smooth and shock-free displacement, which enables gentle and low-noise transport.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (9)

  1. Pompe sinusoïdale (10) comprenant
    - un boîtier de pompe (12) qui présente un couvercle (14), une paroi arrière (24) et une paroi d'enveloppe (18) disposée entre eux,
    - un rotor (30) qui est disposé de manière solidaire en rotation sur un arbre d'entraînement pouvant être connecté à un entraînement à moteur, et qui possède un collet de rotor (32) saillant radialement, s'étendant sous forme ondulée sur la périphérie,
    - deux surfaces de limitation (34, 36) du collet de rotor (32) qui limitent le collet de rotor (32) des deux côtés dans la direction axiale (22) et définissent entre elles un canal de pompe (38),
    - une entrée (40) et une sortie (42) pour le canal de pompe (38),
    - un coulisseau d'étanchéité (50, 50.2) réglable dans la direction axiale (22), s'appliquant hermétiquement des deux côtés entre les deux surfaces de limitation (34, 36) du collet de rotor (32) dans la direction axiale (22) et divisant le canal de pompe (38) entre l'entrée (40) et la sortie (42),
    - un guide de coulisseau (52, 52.2) contre lequel le coulisseau d'étanchéité (50, 50.2) s'applique de manière hermétique et de manière déplaçable au moyen de la rotation du collet de rotor (32) dans la direction axiale (22), caractérisée en ce que
    - le boîtier de pompe (12) présente un évidement (64),
    - le guide de coulisseau (52, 52.2) est inséré et fixé en position dans cet évidement (64).
  2. Pompe sinusoïdale selon la revendication 1,
    caractérisée en ce que
    le guide de coulisseau (52, 52.2) est fixé, notamment vissé, sur le boîtier de pompe (12).
  3. Pompe sinusoïdale selon la revendication 1 ou 2,
    caractérisée en ce que
    le guide de coulisseau (52, 52.2) est inséré de manière ajustée précisément dans l'évidement (64).
  4. Pompe sinusoïdale selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    - le guide de coulisseau (52.2) présente un canal de coulisseau (74) à l'intérieur duquel le coulisseau d'étanchéité (50.2) est supporté de manière déplaçable,
    - le coulisseau d'étanchéité (50.2) est guidé par le biais d'une connexion à rainure et languette (82, 84) dans le canal de coulisseau (52.2).
  5. Pompe sinusoïdale selon la revendication 4,
    caractérisée en ce que
    - le coulisseau d'étanchéité (50.2) présente, au niveau de son côté supérieur tourné vers l'extérieur, une rainure (84) s'étendant dans la direction longitudinale (22),
    - le guide de coulisseau (52.2) présente, au niveau de son côté inférieur tourné vers l'intérieur, une languette (82) s'étendant dans la direction longitudinale (22).
  6. Pompe sinusoïdale selon la revendication 4 ou 5,
    caractérisée en ce que
    le canal de coulisseau (52, 52.2) présente des deux côtés au moins en partie à chaque fois une unité de paroi (58, 58.2, 60, 60.2).
  7. Pompe sinusoïdale selon la revendication 6,
    caractérisée en ce que
    les deux unités de paroi (58, 58.2, 60, 60.2) sont prévues dans la région centrale du canal de coulisseau (74).
  8. Pompe sinusoïdale selon la revendication 6 ou 7,
    caractérisée en ce que
    le coulisseau d'étanchéité (50.2) est guidé par le biais d'une connexion à rainure et languette (90, 92) sur au moins l'une des deux unités de paroi (58.2).
  9. Pompe sinusoïdale selon l'une quelconque des revendications 4 à 8,
    caractérisée en ce que
    des canaux de décharge (80) sont prévus dans la région des coins du canal de coulisseau (74).
EP18184343.4A 2017-07-19 2018-07-19 Pompe sinusoïdale Active EP3431764B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017006808.9A DE102017006808A1 (de) 2017-07-19 2017-07-19 Sinuspumpe

Publications (2)

Publication Number Publication Date
EP3431764A1 EP3431764A1 (fr) 2019-01-23
EP3431764B1 true EP3431764B1 (fr) 2020-03-25

Family

ID=63041790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18184343.4A Active EP3431764B1 (fr) 2017-07-19 2018-07-19 Pompe sinusoïdale

Country Status (2)

Country Link
EP (1) EP3431764B1 (fr)
DE (1) DE102017006808A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1172692A (en) * 1914-11-04 1916-02-22 Peter J Fanning Power mechanism.
US3095823A (en) * 1961-08-14 1963-07-02 Ronald S Brand Positive displacement pump
US4437823A (en) * 1979-03-13 1984-03-20 Upravlenie Sanitarno-Tekhnicheskikh Rabot Rotary machine with an axially moving partition
GB2075122A (en) * 1980-04-14 1981-11-11 Jayasooriya L Rotary positive-displacement fluid-machines
DE3418708A1 (de) 1983-05-21 1984-11-22 Sine Pumps N.V., Curacao, Niederländische Antillen Pumpe
GB2183732A (en) * 1985-12-06 1987-06-10 Charles Sejbl Sinusoidal pump/motor
DE202004000188U1 (de) 2004-01-09 2004-04-01 Sommer, Manfred Pumpe
DE202004000186U1 (de) 2004-01-09 2004-04-01 Sommer, Manfred Pumpe
DE202004000184U1 (de) 2004-01-09 2004-04-01 Sommer, Manfred Pumpe
DE202004000185U1 (de) 2004-01-09 2004-04-01 Sommer, Manfred Pumpe
DE202004000183U1 (de) 2004-01-09 2004-04-01 Sommer, Manfred Pumpe
JP5180709B2 (ja) * 2008-07-10 2013-04-10 株式会社神戸製鋼所 スクリュ圧縮機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102017006808A1 (de) 2019-01-24
EP3431764A1 (fr) 2019-01-23

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