EP3060800A1 - Displacing device - Google Patents

Displacing device

Info

Publication number
EP3060800A1
EP3060800A1 EP14762011.6A EP14762011A EP3060800A1 EP 3060800 A1 EP3060800 A1 EP 3060800A1 EP 14762011 A EP14762011 A EP 14762011A EP 3060800 A1 EP3060800 A1 EP 3060800A1
Authority
EP
European Patent Office
Prior art keywords
group
crankshaft
displacement
groups
offset
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.)
Granted
Application number
EP14762011.6A
Other languages
German (de)
French (fr)
Other versions
EP3060800B1 (en
Inventor
Jürgen GAYDOUL
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.)
Hermetik Hydraulik AB
Original Assignee
Gaydoul Juergen
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 Gaydoul Juergen filed Critical Gaydoul Juergen
Priority to EP16207067.6A priority Critical patent/EP3181902A1/en
Publication of EP3060800A1 publication Critical patent/EP3060800A1/en
Application granted granted Critical
Publication of EP3060800B1 publication Critical patent/EP3060800B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • F04B1/0536—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units
    • F04B1/0538—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units located side-by-side
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/006—Crankshafts
    • 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
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics

Definitions

  • the invention relates to a displacement device for fluids, in particular liquids, with displacers, which dive linearly in the displacer, namely in cylindrical see pump chambers in a pump housing, which are each via a suction valve and a pressure valve in flow communication, wherein the displacer each via a connecting rod are connected to crank pin of a foreign-driven crankshaft.
  • crankpins for the displacement bodies are arranged at equal angular intervals ⁇ distributed around the crankshaft,
  • crankshaft journals associated with one group are arranged offset from the crankshaft by an offset angle ⁇ to those of the other groups,
  • the displacers of each group are arranged offset in the axial direction of the crankshaft to those of the remaining groups, and
  • the group displacer are each arranged at a group offset angle ⁇ to each other about the crankshaft.
  • a particularly compact construction can be achieved if two groups of displacement bodies are provided and the displacement bodies of one group are arranged alternately in the axial direction of the crankshaft with the displacement bodies of the other group.
  • the displacer in V or Boxer arrangement.
  • the two groups displacer are arranged in a boxer arrangement, wherein the group offset angle is 180 °, but may also be modified, for. B. may be 150 °.
  • the stress on the crankshaft is minimized compared to a series arrangement with an odd number of displacers.
  • each group has three displacers distributed in each case at an angular distance ⁇ of 120 ° around the crankshaft.
  • an offset angle ⁇ of 30 ° of the crank pin associated with the first group leads to a particularly low pressure pulsation to those of the second group.
  • a displacement device of the type described above in which a drive is provided with two opposite output shaft ends, to each of which a crank shaft of a positive displacement pump is coupled, which in each case has a group displacer,
  • the two groups of displacement bodies have the same number of displacement bodies
  • crankpins for the displacers of each group are offset at equal angular intervals ⁇ relative to each other about the associated crankshaft, and
  • crankpins of one group are offset from those of the other group by an offset angle ⁇ about the associated crankshaft.
  • Fig. La and lb the side view and end view of a crankshaft attached thereto two groups of three displacers in Boxer arrangement with a group offset angle ⁇ of 180 ° in a positive displacement pump according to the invention
  • FIG. 2 shows the front view of a modified positive displacement pump according to FIG. 1a, but here with a group offset angle ⁇ of 150 °;
  • FIG 3 shows the crankshaft according to the figures 1 or 2 without displacer in side view.
  • Fig. 4 and 5 are two schematic representations of the crankpin assemblies of the crankshaft of Figure 2, and that
  • FIG. 5 shows the crank pin arrangement of the second group of three displacement bodies rotated by an offset angle ⁇
  • Fig. 6a, b and c examples of the crank pin positions of a positive displacement pump according to
  • Figure la, lb and 2 in three different rotational positions of the crankshaft; 7 shows an arrangement according to the figures la and lb three superimposed diagrams in each case over a crank angle between 0 and 360 °, namely in the upper diagram six speed curves for the speed of the six displacer, in the middle diagram, the conveyor volumes and in the bottom diagram the pressure pulsations;
  • Figure 8 is a perspective view of parts of another displacement device according to the invention with a common drive for two positive displacement pumps.
  • FIG. 9 is a partial view of the displacement device according to FIG. 8.
  • FIGS. 1a and 1b show, in a side view and an end view, a crankshaft 10 with two opposing groups A, B mounted thereon of displacers or plungers 1, 3, 5 (group A) and 2, 4, 6 (group B).
  • the plungers of the group A are alternately arranged to those of the group B in the axial direction of the crankshaft, as can be seen from Fig. La.
  • the groups A and B are arranged offset by a group offset angle ⁇ of 180 ° in a boxer arrangement to each other.
  • the angle ⁇ is 180 ° according to FIGS. 1a and 1b, but may also deviate therefrom.
  • crankshaft 10 and the plunger 1 to 6 form part of a positive displacement pump whose housings and other parts are not shown; However, it is understood that the plunger 1 to 6 in cylindrical pump chambers of conventional design are guided slidably and sealed, the pump chambers are connected via a respective suction valve and a pressure valve in flow connection to bring a fluid, for example water, to high pressures.
  • 3 shows the crankshaft 10 alone. At its right in Fig. 3 end, it is provided with a drive pin 17, with which it can be coupled with an output shaft, not shown, of a drive, such as an electric motor. Further, it has two spaced bearing collars 18, 19, with which it is rotatably mounted in bearings, not shown, of the pump housing.
  • crank pins 11 to 16 are arranged side by side in the axial direction.
  • Reference numerals 1 to 6 for the Plunger not shown in Fig. 3 relate here to the assignment to the associated crank pin 11 to 16, so l to ll, 2 to l2, etc.
  • At this crank pin plungers are 1 to 6 via connecting rods 20 in conventional Way connected by means of crossheads 21.
  • the three crankpins 12, 14, 16 are shown in FIG. 5 relative to the crank pin 11, 13, 15 by an offset angle ß offset on the crankshaft.
  • crank pins 11 to 16 are symbolized by circles, which, however, are drawn smaller here for the sake of simpler illustration than in FIGS. 4 and 5.
  • all six crank pins are here each drawn in the three Fig. 6a, 6b and 6c to make the wake of the crank pin to the offset angle ß clear.
  • a reference numeral 1 to 6 denoting the respective plunger is entered. Plungers with odd reference numbers 1, 3 or 5 belong to group A and feed upwards in Figs.
  • plungers 2, 4 or 6 belong to group B and convey downwards.
  • the square plunger symbol in the respective circle above or below the plunger reference number represents the direction of action of the plunger in question. Pressurized plungers are indicated by hatching. Plungers without hatching are in the suction stroke and are pressure-free.
  • Plunger at top dead center OT or bottom dead center UT have the speed zero, thus crossing the crank angle axis x.
  • begins or ends the funding process For example, the plunger 1 is at zero crank angle in the UT and begins to promote with increasing flow.
  • the plunger 2 is at crank angle zero already in the delivery state with increasing flow.
  • the P loungeer 3 is at top dead center OT and the speed curve g3 intersects the crank angle axis sloping, while plunger 2 reaches the maximum speed and promotes maximum.
  • plunger 1 delivers maximum at maximum speed, while plunger 6 has reached 0 m / s in TDC, and so on.
  • the curve f in the middle diagram of FIG. 7 shows the periodic oscillation of the delivery rate 1 / min achieved with a positive displacement pump according to FIGS. 1 to 5 between approximately 1550 1 / min and 1610 1 / min.
  • the curve d in the lowest diagram of FIG. 7 shows the pressure pulsation of the delivered liquid, which fluctuates approximately between 375 bar minimum pressure and 400 bar maximum pressure. This represents a very low pressure pulsation, which is smaller than achievable with a conventional positive displacement pump with seven plungers in series.
  • FIGS. 8 and 9 show an alternative displacement device, wherein FIG. 9 shows the right half of the device according to FIG. 8 in a side view corresponding to FIG.
  • FIGS. 8 and 9 show an alternative displacement device, wherein FIG. 9 shows the right half of the device according to FIG. 8 in a side view corresponding to FIG.
  • the same reference numerals as in FIGS. 1 to 6 are used in FIGS. 8 and 9.
  • the displacement device has an electric motor 30 as a drive whose continuous output shaft (not visible) with their output shaft ends 34 are each coupled to a crankshaft 10 of its own positive displacement pump 31, 32.
  • the result is a unit of a central drive 30 and thus aligned two positive displacement pumps 31, 32, which are mounted on the engine 30 flying.
  • Each positive displacement pump has a plunger group A with three plungers arranged in series, namely group A with plungers 1, 3, 5 (left in FIG. 8) and group B with plungers 2, 4, 6 (to the right of the electric motor 30 in FIGS 9). All plungers 1, 3, 5 and 2, 4, 6 are each arranged in series and in a same vertical plane E.
  • crankpins 11, 13, 15 of the crankshaft 10 of the group A are shown in FIG. 4 in the same plane E as the plunger 1, 3, 5 are arranged.
  • each plunger group of an embodiment according to FIGS. 1 to 9 can also have more than three plungers for each group.
  • There are also more than three crankpin arrangements evenly distributed about a common crankshaft, e.g. four crankpins, which are distributed at an angular distance of ⁇ 90 ° around the circumference of the crankshaft.
  • the offset angle ⁇ can also be less than or greater than 30 °.

Abstract

The invention relates to a displacing device for fluids, in particular liquids, which displacing device has linearly movable displacing elements, which plunge into pump chambers and are connected to crank pins of an externally driven crankshaft by means of one connecting rod each, wherein at least two groups of displacing elements are provided. All groups have the same number of displacing elements, and the crank pins for the displacing elements are arranged in such a way that said crank pins are distributed around the crank shaft at identical angular distances. The crank pins associated with a group are arranged around the crank shaft in such a way that said crank pins are offset in relation to the crank pins of the other group by an offset angle ß. Furthermore, the displacing elements of each group are arranged at an offset in relation to the displacing elements of the other groups in the axial direction of the crankshaft, and the group displacing elements are arranged at a group offset angle γ to each other around the crankshaft. The displacing device enables low pressure pulsations.

Description

Verdrängereinrichtung  Displacement device
Die Erfindung betrifft eine Verdrängereinrichtung für Fluide, insbesondere Flüssigkeiten, mit Verdrängerkörpern, die linear in die Verdrängereinrichtung eintauchen, nämlich in zylindri- sehe Pumpenkammern in einem Pumpengehäuse, die je über ein Saugventil und ein Druckventil in Strömungsverbindung stehen, wobei die Verdrängerkörper jeweils über eine Pleuelstange an Kurbelzapfen einer fremdangetriebenen Kurbelwelle angeschlossen sind. The invention relates to a displacement device for fluids, in particular liquids, with displacers, which dive linearly in the displacer, namely in cylindrical see pump chambers in a pump housing, which are each via a suction valve and a pressure valve in flow communication, wherein the displacer each via a connecting rod are connected to crank pin of a foreign-driven crankshaft.
Es sind Verdrängerpumpen bekannt, mit denen Wasser auf Drücke von mehreren hundert bar gebracht werden können. Solches Druckwasser wird beispielsweise zum Entzundern von Walzstahlblöcken oder -bändern eingesetzt, um Walzprodukte mit hoher, gleichförmiger Oberflächenqualität zu erzielen. There are known positive displacement pumps, with which water can be brought to pressures of several hundred bar. Such pressurized water is used, for example, for descaling rolled steel billets or strips to obtain rolled products of high, uniform surface quality.
Beim Einsatz von Verdrängerpumpen mit linear beweglichen Verdrängerkörpern, im Folgen- den auch Plunger genannt, treten unvermeidlich Druckpulsationen auf, die möglichst klein gehalten werden sollten, um gewünschte Gleichförmigkeit der Entzunderung der Walzprodukte zu gewährleisten. Bei herkömmlichen Verdrängerpumpen sind die Zylinder für die Verdrängerkörper im Pumpengehäuse in Reihe angeordnet. Untersuchungen der Anmelderin haben gezeigt, dass bei einer solchen Reihenanordnung die Druckpulsationen mit zunehmen- der ungerader Anzahl von Zylindern kleiner werden als bei einer geradzahligen Zylinderanzahl. Dem Einsatz einer großen ungeraden Anzahl von Zylindern, z.B. sieben Zylindern, stehen jedoch die große Baulänge, der schlechte Massenausgleich und die ungleichmäßige Belastung der Kurbelwelle entgegen. Der Erfindung liegt die Aufgabe zugrunde, eine Verdrängereinrichtung der eingangs beschriebenen Art zu schaffen, die zu geringen Druckpulsationen führt. When using displacement pumps with linearly movable displacement bodies, also referred to as plungers below, pressure pulsations inevitably occur which should be kept as small as possible in order to ensure the desired uniformity of the descaling of the rolled products. In conventional positive displacement pumps, the cylinders for the displacer are arranged in series in the pump housing. Investigations by the applicant have shown that in such a series arrangement the pressure pulsations become smaller with increasing odd number of cylinders than with an even number of cylinders. The use of a large odd number of cylinders, e.g. seven cylinders, but stand against the great length, the poor mass balance and the uneven load on the crankshaft. The invention has for its object to provide a displacement device of the type described above, which leads to low pressure pulsations.
Diese Aufgabe wird durch Patentanspruch 1 gelöst, wobei für eine erfindungsgemäße Verdrängereinrichtung mindestens zwei Gruppen Verdrängerkörper vorgesehen sind, This object is achieved by claim 1, wherein for a displacement device according to the invention at least two groups of displacement bodies are provided,
alle Gruppen jeweils eine gleiche Anzahl Verdrängerkörper aufweisen, die Kurbelzapfen für die Verdrängerkörper in gleichen Winkelabständen α um die Kurbelwelle herum verteilt angeordnet sind,  all groups each have an equal number of displacement bodies, the crankpins for the displacement bodies are arranged at equal angular intervals α distributed around the crankshaft,
die einer Gruppe zugeordneten Kurbelzapfen zu denjenigen der anderen Gruppen jeweils um einen Versatzwinkel ß versetzt um die Kurbelwelle angeordnet sind,  the crankshaft journals associated with one group are arranged offset from the crankshaft by an offset angle β to those of the other groups,
die Verdrängerkörper jeder Gruppe in Achsrichtung der Kurbelwelle versetzt zu denjenigen der übrigen Gruppen angeordnet sind, und  the displacers of each group are arranged offset in the axial direction of the crankshaft to those of the remaining groups, and
die Gruppen Verdrängerkörper jeweils unter einem Gruppen- Versatzwinkel γ zueinander um die Kurbelwelle angeordnet sind.  the group displacer are each arranged at a group offset angle γ to each other about the crankshaft.
Eine besonders kompakte Bauweise lässt sich dabei erzielen, wenn zwei Gruppen Verdrängerkörper vorgesehen sind und die Verdrängerkörper der einen Gruppe in Achsrichtung der Kurbelwelle abwechselnd mit den Verdrängerkörpern der anderen Gruppe angeordnet sind. A particularly compact construction can be achieved if two groups of displacement bodies are provided and the displacement bodies of one group are arranged alternately in the axial direction of the crankshaft with the displacement bodies of the other group.
Bei dieser Anordnung ist möglich, die Verdrängerkörper in V- oder Boxer- Anordnung vorzusehen. Hinsichtlich eines besseren Ausgleichs der Massenkräfte ist von Vorteil, wenn die beiden Gruppen Verdrängerkörper in Boxer- Anordnung angeordnet sind, wobei der Gruppen- Versatzwinkel 180° beträgt, aber auch abgewandelt sein kann, z. B. 150° betragen kann. Bei einer Boxer-Anordnung ist die Beanspruchung der Kurbelwelle im Vergleich zu einer Reihenanordnung mit ungerader Anzahl der Verdrängerkörper minimiert. In this arrangement, it is possible to provide the displacer in V or Boxer arrangement. With regard to a better compensation of the mass forces is advantageous if the two groups displacer are arranged in a boxer arrangement, wherein the group offset angle is 180 °, but may also be modified, for. B. may be 150 °. In a boxer arrangement, the stress on the crankshaft is minimized compared to a series arrangement with an odd number of displacers.
Bei einer mit zwei Gruppen Verdrängerkörper ausgeführten Verdrängereinrichtung gemäß der Erfindung weist jede Gruppe drei jeweils im Winkelabstand α von 120° um die Kurbelwelle verteilt angeordnete Verdrängerkörper auf. Zu einer besonders niedrigen Druckpulsation führt dabei ein Versatzwinkel ß von 30° der der ersten Gruppe zugeordneten Kurbelzapfen zu denjenigen der zweiten Gruppe. In a displacer device according to the invention designed with two displacer groups, each group has three displacers distributed in each case at an angular distance α of 120 ° around the crankshaft. In this case, an offset angle β of 30 ° of the crank pin associated with the first group leads to a particularly low pressure pulsation to those of the second group.
Die gestellte Aufgabe lässt sich auch durch eine Verdrängereinrichtung der eingangs beschriebenen Art lösen, bei der ein Antrieb mit zwei entgegengesetzten Abtriebswellenenden vorgesehen ist, an die je eine Kurbel welle einer Verdrängerpumpe gekoppelt ist, welche jeweils eine Gruppe Verdrängerkörper aufweist, The stated object can also be solved by a displacement device of the type described above, in which a drive is provided with two opposite output shaft ends, to each of which a crank shaft of a positive displacement pump is coupled, which in each case has a group displacer,
die beiden Gruppen Verdrängerkörper eine gleiche Anzahl Verdrängerkörper aufweisen,  the two groups of displacement bodies have the same number of displacement bodies,
die Kurbelzapfen für die Verdrängerkörper jeder Gruppe in gleichen Winkelabständen α zueinander versetzt um die zugehörige Kurbelwelle herum angeordnet sind, und  the crankpins for the displacers of each group are offset at equal angular intervals α relative to each other about the associated crankshaft, and
die Kurbelzapfen der einen Gruppe zu denjenigen der anderen Gruppe um einen Versatzwinkel ß versetzt um die zugehörige Kurbelwelle angeordnet sind.  the crankpins of one group are offset from those of the other group by an offset angle β about the associated crankshaft.
Weitere vorteilhafte Ausgestaltungen der Erfindung mit einem gemeinsamen Antrieb für zwei Verdrängerpumpen sind in den Unteransprüchen 7 bis 12 angegeben. Die Erfindung ist im Folgenden anhand schematischer Zeichnungen mit weiteren Einzelheiten näher erläutert. Es zeigen: Further advantageous embodiments of the invention with a common drive for two positive displacement pumps are specified in the subclaims 7 to 12. The invention is explained in more detail below with reference to schematic drawings with further details. Show it:
Fig. la und lb die Seitenansicht und Stirnansicht einer Kurbelwelle mit daran angebrachten zwei Gruppen von je drei Verdrängerkörpern in Boxer- Anordnung mit einem Gruppen- Versatzwinkel γ von 180° bei einer erfindungsgemäßen Verdrängerpumpe; Fig. La and lb the side view and end view of a crankshaft attached thereto two groups of three displacers in Boxer arrangement with a group offset angle γ of 180 ° in a positive displacement pump according to the invention;
Fig. 2 die Stirnansicht einer abgewandelten Verdrängerpumpe gemäß Figur la, hier jedoch mit einem Gruppen- Versatzwinkel γ von 150°;  2 shows the front view of a modified positive displacement pump according to FIG. 1a, but here with a group offset angle γ of 150 °;
Fig. 3 die Kurbelwelle nach den Figuren 1 oder 2 ohne Verdrängerkörper in Seitenansicht;  3 shows the crankshaft according to the figures 1 or 2 without displacer in side view.
Fig. 4 und 5 zwei schematische Darstellungen der Kurbelzapfenanordnungen der Kurbelwelle nach Figur 2, und zwar  Fig. 4 and 5 are two schematic representations of the crankpin assemblies of the crankshaft of Figure 2, and that
Fig. 4 die Kurbelzapfenanordnung einer ersten Gruppe von drei Verdrängerkörpern und  Fig. 4, the crank pin assembly of a first group of three displacers and
Fig. 5 die dazu um einen Versatzwinkel ß verdrehte Kurbelzapfenanordnung der zweiten Gruppe von drei Verdrängerkörpern;  FIG. 5 shows the crank pin arrangement of the second group of three displacement bodies rotated by an offset angle β; FIG.
Fig. 6a, b und c Beispiele für die Kurbelzapfenstellungen einer Verdrängerpumpe gemäß Fig. 6a, b and c examples of the crank pin positions of a positive displacement pump according to
Figur la, lb und 2 in drei unterschiedlichen Drehpositionen der Kurbelwelle; Fig. 7 für eine Anordnung nach den Figuren la und lb drei übereinander angeordnete Diagramme jeweils über einem Kurbelwinkel zwischen 0 und 360°, nämlich im oberen Diagramm sechs Geschwindigkeitskurven für die Geschwindigkeit der sechs Verdrängerkörper, im mittleren Diagramm die För- dervolumina und im untersten Diagramm die Druckpulsationen; Figure la, lb and 2 in three different rotational positions of the crankshaft; 7 shows an arrangement according to the figures la and lb three superimposed diagrams in each case over a crank angle between 0 and 360 °, namely in the upper diagram six speed curves for the speed of the six displacer, in the middle diagram, the conveyor volumes and in the bottom diagram the pressure pulsations;
Fig. 8 eine perspektivische Ansicht von Teilen einer anderen Verdrängereinrichtung gemäß der Erfindung mit einem gemeinsamen Antrieb für zwei Verdrängerpumpen;  Figure 8 is a perspective view of parts of another displacement device according to the invention with a common drive for two positive displacement pumps.
Fig. 9 eine Teilansicht der Verdrängereinrichtung nach Fig. 8.  9 is a partial view of the displacement device according to FIG. 8.
Fig. la und lb zeigen in einer Seitenansicht und einer Stirnansicht einer Kurbelwelle 10 mit daran angebrachten zwei gegenüberliegenden Gruppen A, B von Verdrängerkörpern oder Plungern 1, 3, 5 (Gruppe A) und 2, 4, 6 (Gruppe B). Die Plunger der Gruppe A sind zu denjenigen der Gruppe B in Achsrichtung der Kurbelwelle abwechselnd angeordnet, wie dies aus Fig. la ersichtlich ist. Die Gruppen A und B sind um einen Gruppen- Versatzwinkel γ von 180° in Boxer- Anordnung zueinander versetzt angeordnet. Der Winkel γ beträgt gemäß den Fig. la und lb 180°, kann aber auch davon abweichen. 1a and 1b show, in a side view and an end view, a crankshaft 10 with two opposing groups A, B mounted thereon of displacers or plungers 1, 3, 5 (group A) and 2, 4, 6 (group B). The plungers of the group A are alternately arranged to those of the group B in the axial direction of the crankshaft, as can be seen from Fig. La. The groups A and B are arranged offset by a group offset angle γ of 180 ° in a boxer arrangement to each other. The angle γ is 180 ° according to FIGS. 1a and 1b, but may also deviate therefrom.
Die Kurbelwelle 10 und die Plunger 1 bis 6 bilden Teil einer Verdrängerpumpe, deren Gehäu- se und weitere Teile nicht dargestellt sind; es versteht sich jedoch, dass die Plunger 1 bis 6 in zylinderförmigen Pumpenkammern üblicher Bauart gleitbar und abgedichtet geführt sind, wobei die Pumpenkammern über je ein Saugventil und ein Druckventil in Strömungs Verbindung stehen, um ein Fluid, z.B. Wasser, auf hohe Drücke zu bringen. Die Fig. 3 zeigt die Kurbelwelle 10 allein. An ihrem in Fig. 3 rechten Ende ist sie mit einem Antriebszapfen 17 versehen, mit dem sie mit einer nicht gezeigten Abtriebswelle eines Antriebes, wie eines Elektromotors, kuppelbar ist. Ferner hat sie zwei im Abstand angeordnete Lagerbünde 18, 19, mit der sie in nicht gezeigten Lagern des Pumpengehäuses drehbar gelagert ist. In dem Abstand zwischen den beiden Lagerbünden sind Kurbelzapfen 11 bis 16 in Achsrichtung nebeneinander angeordnet. Die jeweils drei Kurbelzapfen der beiden Gruppen sind jeweils um einen Winkelabstand α = 120° verteilt angeordnet. Die Bezugszahlen 1 bis 6 für die in Fig. 3 nicht gezeichneten Plunger betreffen hier die Zuordnung zu den zugehörigen Kurbelzapfen 11 bis 16, also l zu l l, 2 zu l2 etc. An diese Kurbelzapfen sind die Plunger 1 bis 6 über Pleuelstangen 20 in herkömmlicher Weise mittels Kreuzköpfen 21 angeschlossen. Die drei Kurbelzapfen 12, 14, 16 sind gemäß Fig. 5 gegenüber den Kurbelzapfen 11, 13, 15 um einen Versatzwinkel ß versetzt auf der Kurbelwelle angeordnet. Dies führt dazu, dass die Verdrängungswirkung der geradzahlig bezeichneten Plunger 2, 4, 6 sich nicht gleichzeitig mit derjenigen der ungeradzahligen Plunger 1, 3, 5 einstellt, sondern um ß = 30° zeitlich versetzt stattfindet. Dies führt im Ergebnis dazu, dass die Druckpulsationen über den Umlauf der Kurbelwelle sich vergleichmäßigen, wie im Folgenden näher erläutert ist. Hierzu sei auf die Fig. 6a, 6b und 6c, sowie auf die Fig. 7 verwiesen. The crankshaft 10 and the plunger 1 to 6 form part of a positive displacement pump whose housings and other parts are not shown; However, it is understood that the plunger 1 to 6 in cylindrical pump chambers of conventional design are guided slidably and sealed, the pump chambers are connected via a respective suction valve and a pressure valve in flow connection to bring a fluid, for example water, to high pressures. 3 shows the crankshaft 10 alone. At its right in Fig. 3 end, it is provided with a drive pin 17, with which it can be coupled with an output shaft, not shown, of a drive, such as an electric motor. Further, it has two spaced bearing collars 18, 19, with which it is rotatably mounted in bearings, not shown, of the pump housing. In the distance between the two bearing collars crank pins 11 to 16 are arranged side by side in the axial direction. The three crankpins of the two groups are each distributed at an angular distance α = 120 °. Reference numerals 1 to 6 for the Plunger not shown in Fig. 3 relate here to the assignment to the associated crank pin 11 to 16, so l to ll, 2 to l2, etc. At this crank pin plungers are 1 to 6 via connecting rods 20 in conventional Way connected by means of crossheads 21. The three crankpins 12, 14, 16 are shown in FIG. 5 relative to the crank pin 11, 13, 15 by an offset angle ß offset on the crankshaft. As a result, the displacement effect of the even-numbered plungers 2, 4, 6 does not coincide with that of the odd-numbered plungers 1, 3, 5, but takes place offset in time by β = 30 °. This results in the result that the pressure pulsations over the circulation of the crankshaft become uniform, as explained in more detail below. For this purpose, reference is made to FIGS. 6 a, 6 b and 6 c, as well as to FIG. 7.
Die Fig. 6a, b und c zeigen die Kurbelwelle gemäß den Fig. 1 bis 5 in den drei Drehpositionen 0°, 60° und 90°. Ähnlich der Darstellung in den Fig. 4 und 5 sind die Kurbelzapfen 11 bis 16 durch Kreise symbolisiert, die hier jedoch der einfacheren Darstellung wegen kleiner gezeichnet sind als in den Fig. 4 und 5. Anders als in diesen Figuren sind hier jedoch alle sechs Kurbelzapfen jeweils in den drei Fig. 6a, 6b und 6c eingezeichnet, um den Nachlauf der Kurbelzapfen um den Versatzwinkel ß deutlich zu machen. In jedem Kreis ist eine den jeweiligen Plunger bezeichnende Bezugszahl 1 bis 6 eingetragen. Plunger mit ungerader Bezugszahl 1, 3 oder 5 gehören zur Gruppe A und fördern in den Fig. la, lb und 2 nach oben, während Plunger mit gerader Bezugszahl 2, 4 oder 6 zur Gruppe B gehören und nach unten fördern. Das quadratische Plungersymbol in dem jeweiligen Kreis über oder unter der Plunger-Bezugszahl stellt die Wirkrichtung des betreffenden Plungers dar. Unter Druck stehende, fördernde Plunger sind durch Schraffur gekennzeichnet. Plunger ohne Schraffur befinden sich im Saughub und sind druckfrei. 6a, b and c show the crankshaft according to FIGS. 1 to 5 in the three rotational positions 0 °, 60 ° and 90 °. Similar to the illustration in FIGS. 4 and 5, the crank pins 11 to 16 are symbolized by circles, which, however, are drawn smaller here for the sake of simpler illustration than in FIGS. 4 and 5. Unlike in these figures, however, all six crank pins are here each drawn in the three Fig. 6a, 6b and 6c to make the wake of the crank pin to the offset angle ß clear. In each circle, a reference numeral 1 to 6 denoting the respective plunger is entered. Plungers with odd reference numbers 1, 3 or 5 belong to group A and feed upwards in Figs. 1a, 1b and 2, while plungers 2, 4 or 6 belong to group B and convey downwards. The square plunger symbol in the respective circle above or below the plunger reference number represents the direction of action of the plunger in question. Pressurized plungers are indicated by hatching. Plungers without hatching are in the suction stroke and are pressure-free.
Im obersten Diagramm der Fig. 7 sind über dem Kurbelwinkel der Kurbelwelle von 0 bis 360° die Geschwindigkeitskurven gl bis g6 der einzelnen Plunger 1 bis 6 dargestellt, wobei der Bezug zum jeweiligen Plunger durch dessen Bezugszahl gekennzeichnet ist. So gehört die Kurve gl zu Plunger 1, die Kurve g2 zum Plunger 2 usw. In the uppermost diagram of FIG. 7, the speed curves g1 to g6 of the individual plungers 1 to 6 are shown above the crank angle of the crankshaft from 0 to 360 °, the reference to the respective plunger being identified by its reference number. So the curve gl belongs to plunger 1, the curve g2 to the plunger 2 etc.
Plunger im oberen Totpunkt OT oder unteren Totpunkt UT haben die Geschwindigkeit Null, kreuzen also die Kurbelwinkelachse x. Hier beginnt bzw. endet der Förderprozess. Beispiels- weise befindet sich der Plunger 1 bei Kurbelwinkel Null im UT und beginnt mit zunehmender Fördermenge zu fördern. Der Plunger 2 befindet sich bei Kurbelwinkel Null bereits in Förderzustand mit zunehmender Fördermenge. Bei Kurbel vinkel 60° gemäß Fig. 6b befindet sich der P lunger 3 im oberen Totpunkt OT und die Geschwindigkeitskurve g3 schneidet die Kurbelwinkelachse abfallend, während Plunger 2 die maximale Geschwindigkeit erreicht und maximal fördert. Bei 90° fördert Plunger 1 bei höchster Geschwindigkeit maximal, während der Plunger 6 die Geschwindigkeit 0 m/s im OT erreicht hat usw. Plunger at top dead center OT or bottom dead center UT have the speed zero, thus crossing the crank angle axis x. Here begins or ends the funding process. For example, the plunger 1 is at zero crank angle in the UT and begins to promote with increasing flow. The plunger 2 is at crank angle zero already in the delivery state with increasing flow. At crank angle 60 ° as shown in FIG. 6b, the P loungeer 3 is at top dead center OT and the speed curve g3 intersects the crank angle axis sloping, while plunger 2 reaches the maximum speed and promotes maximum. At 90 °, plunger 1 delivers maximum at maximum speed, while plunger 6 has reached 0 m / s in TDC, and so on.
Die Kurve f im mittleren Diagramm von Fig. 7 zeigt das periodische Schwanken der mit einer Verdrängerpumpe gemäß den Fig. 1 bis 5 erzielten Fördermenge 1/min zwischen ca. 1550 1/min und 1610 1/min. The curve f in the middle diagram of FIG. 7 shows the periodic oscillation of the delivery rate 1 / min achieved with a positive displacement pump according to FIGS. 1 to 5 between approximately 1550 1 / min and 1610 1 / min.
Schließlich zeigt die Kurve d im untersten Diagramm der Fig. 7 die Druckpulsation der geförderten Flüssigkeit, die etwa zwischen 375 bar Mindestdruck und 400 bar Höchstdruck schwankt. Dies stellt eine sehr niedrige Druckpulsation dar, die kleiner als mit einer her- kömmlichen Verdrängerpumpe mit sieben Plungern in Reihe erzielbar ist. Finally, the curve d in the lowest diagram of FIG. 7 shows the pressure pulsation of the delivered liquid, which fluctuates approximately between 375 bar minimum pressure and 400 bar maximum pressure. This represents a very low pressure pulsation, which is smaller than achievable with a conventional positive displacement pump with seven plungers in series.
In den Fig. 8 und 9 ist eine alternative Verdrängereinrichtung dargestellt, wobei die Fig. 9 die rechte Hälfte der Einrichtung nach Fig. 8 in einer Seitenansicht entsprechend Fig. la zeigt. Für gleiche oder gleichwirkende Teile sind in den Fig. 8 und 9 gleiche Bezugszeichen wie in den Fig. 1 bis 6 verwendet. FIGS. 8 and 9 show an alternative displacement device, wherein FIG. 9 shows the right half of the device according to FIG. 8 in a side view corresponding to FIG. For identical or equivalent parts, the same reference numerals as in FIGS. 1 to 6 are used in FIGS. 8 and 9.
Wie Fig. 8 zeigt, besitzt die Verdrängereinrichtung einen Elektromotor 30 als Antrieb, dessen durchgehende Abtriebswelle (nicht sichtbar) mit ihren Abtriebswellenenden 34 je an eine Kurbelwelle 10 einer eigenen Verdrängerpumpe 31, 32 angekoppelt sind. So entsteht eine Einheit aus einem zentralen Antrieb 30 und damit fluchtend zwei Verdrängerpumpen 31, 32, welche fliegend am Motor 30 angebracht sind. Jede Verdrängerpumpe hat eine Plungergruppe A mit drei in Reihe angeordneten Plungern, nämlich Gruppe A mit Plungern 1, 3, 5 (links in Fig. 8) und Gruppe B mit Plungern 2, 4, 6 (rechts vom Elektromotor 30 in Fig. 8 und 9). Sämtliche Plunger 1, 3, 5 und 2, 4, 6 sind jeweils in Reihe und in einer gleichen vertikalen Ebene E angeordnet. Die Kurbelzapfen 11, 13, 15 der Kurbelwelle 10 der Gruppe A sind gemäß Fig. 4 in der gleichen Ebene E wie die Plunger 1, 3, 5 angeordnet. Jedoch sind die Kurbelzapfen 12, 14, 16 der Kurbelwelle 10 der Gruppe B wie in Fig. 5 um einen Versatzwinkel ß = 30° versetzt auf der zweiten Kurbelwelle 10 angeordnet. Aufgrund dieses Versatzes lässt sich mit einer Verdrängereinrichtung gemäß den Fig. 8 und 9 ebenfalls eine niedrigere Druckpulsation erzielen als mit einer herkömmlichen Verdrängerpumpe mit ungerader Plunger anzahl. As shown in FIG. 8, the displacement device has an electric motor 30 as a drive whose continuous output shaft (not visible) with their output shaft ends 34 are each coupled to a crankshaft 10 of its own positive displacement pump 31, 32. The result is a unit of a central drive 30 and thus aligned two positive displacement pumps 31, 32, which are mounted on the engine 30 flying. Each positive displacement pump has a plunger group A with three plungers arranged in series, namely group A with plungers 1, 3, 5 (left in FIG. 8) and group B with plungers 2, 4, 6 (to the right of the electric motor 30 in FIGS 9). All plungers 1, 3, 5 and 2, 4, 6 are each arranged in series and in a same vertical plane E. The crankpins 11, 13, 15 of the crankshaft 10 of the group A are shown in FIG. 4 in the same plane E as the plunger 1, 3, 5 are arranged. However, the crankpins 12, 14, 16 of the crankshaft 10 of the group B, as shown in FIG. 5, are offset on the second crankshaft 10 by an offset angle β = 30 °. Due to this offset can be with a displacement device according to FIGS. 8 and 9 also a lower Achieve pressure pulsation than with a conventional positive displacement pump with odd plunger number.
Die Erfindung ist nicht auf die gezeigten Ausführungen beschränkt. So kann jede Plunger- gruppe einer Ausführung gemäß den Fig. 1 bis 9 auch mehr als drei Plunger für jede Gruppe haben. Es sind auch mehr als drei Kurbelzapfenanordnungen um eine gemeinsame Kurbelwelle gleichmäßig verteilt möglich, z.B. vier Kurbelzapfen, die um einen Winkelabstand von α = 90° um den Umfang der Kurbelwelle verteilt sind. Der Versatzwinkel ß kann auch kleiner oder größer als 30° sein. The invention is not limited to the embodiments shown. Thus, each plunger group of an embodiment according to FIGS. 1 to 9 can also have more than three plungers for each group. There are also more than three crankpin arrangements evenly distributed about a common crankshaft, e.g. four crankpins, which are distributed at an angular distance of α = 90 ° around the circumference of the crankshaft. The offset angle β can also be less than or greater than 30 °.
Die in der vorstehenden Beschreibung, den Ansprüchen und den Zeichnungen offenbarten Merkmale können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Ausgestaltungen von Bedeutung sein. The features disclosed in the foregoing description, the claims and the drawings may be of importance both individually and in any combination for the realization of the invention in its various forms.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
A, B Plungergruppe A, B Plunger group
1 bis 6 Verdrängerkörper, Plunger 1 to 6 displacer, plunger
10 Kurbelwelle  10 crankshaft
11 bis 16 Kurbelzapfen  11 to 16 crankpins
17 Antriebsende 17 drive end
18, 19 Lagerbund 18, 19 Lagerbund
20 Pleuel 20 connecting rods
21 Kreuzkopf  21 crosshead
α Winlielabstand der Plunger einer Gruppe α Winliel distance of the plunger of a group
ß Versatzwinkel der Kurbelzapfen einer Gruppe zu denjenigen der anderen Offset angle of the crankpins of one group to those of the other
Gruppe  group
γ Gruppen-Versatzwinkel der Plungergruppen γ group offset angle of the plunger groups
30 Elektromotor  30 electric motor
31, 32 Verdrängerpumpe  31, 32 positive displacement pump
34 Abtriebswellenende  34 output shaft end
E, F Ebene  E, F level
x Kurbelwinkelachse x crank angle axis
f Fördermengen-Kurve f Flow curve
d Druckpulsationskurve d Pressure pulsation curve
gl bis g6 Geschwindigkeitskurven gl to g6 speed curves

Claims

Patentansprüche claims
Verdrängereinrichtung für Fluide, insbesondere Flüssigkeiten, mit linear beweglichen, in die Verdrängereinrichtung eintauchenden, Verdrängerkörpern (1 bis 6) jeweils über eine Pleuelstange (20) an Kurbelzapfen (11 bis 16) einer fremdangetriebenen Kurbelwelle (10) angeschlossen sind, wobei Displacement device for fluids, in particular liquids, with linearly movable, immersed in the displacer, displacement bodies (1 to 6) in each case via a connecting rod (20) on crank pins (11 to 16) of a foreign-driven crankshaft (10) are connected, wherein
mindestens zwei Gruppen (A; B) Verdrängerkörper (1 bis 6) vorgesehen sind, alle Gruppen jeweils eine gleiche Anzahl Verdrängerkörper aufweisen, die Kurbelzapfen (11 bis 16) für die Verdrängerkörper (1 bis 6) in gleichen Winkelabständen (a) um die Kurbelwelle (10) herum verteilt angeordnet sind, die einer Gruppe (B) zugeordneten Kurbelzapfen (12, 14, 16) zu denjenigen (11, 13, 15) der anderen Gruppen (B) jeweils um einen Versatzwinkel (ß) versetzt um die Kurbelwelle (10) angeordnet sind,  At least two groups (A; B) displacement bodies (1 to 6) are provided, all groups each have an equal number of displacement body, the crank pin (11 to 16) for the displacement body (1 to 6) at equal angular intervals (a) around the crankshaft (10) are distributed around, the one (B) associated crank pin (12, 14, 16) to those (11, 13, 15) of the other groups (B) each offset by an offset angle (ß) about the crankshaft ( 10) are arranged,
die Verdrängerkörper jeder Gruppe (B) in Achsrichtung der Kurbelwelle (10) versetzt zu denjenigen der übrigen Gruppen (A) angeordnet sind, und die Gruppen (A; B) Verdrängerkörper (1, 3, 5; 2, 4, 6)jeweils unter einem Gruppen- Versatzwinkel (γ) zueinander um die Kurbelwelle (10) versetzt angeordnet sind.  the displacers of each group (B) being offset in the axial direction of the crankshaft (10) from those of the remaining groups (A), and the groups (A; B) displacers (1, 3, 5; 2, 4, 6) each below a group offset angle (γ) to each other about the crankshaft (10) are arranged offset.
Verdrängereinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zwei Gruppen (A; B) Verdrängerkörper (1, 3, 5; 2, 4, 6) vorgesehen sind, und dass die Verdrängerkörper (2, 4, 6) der einen Gruppe (B) in Achsrichtung der Kurbelwelle (10) abwechselnd mit den Verdrängerkörpern (1, 3, 5) der anderen Gruppe (A) angeordnet sind. Displacement device according to claim 1, characterized in that two groups (A; B) displacement bodies (1, 3, 5, 2, 4, 6) are provided, and that the displacement bodies (2, 4, 6) of the one group (B) in the axial direction of the crankshaft (10) are arranged alternately with the displacement bodies (1, 3, 5) of the other group (A).
Verdrängereinrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die beiden Gruppen (A; B) Verdrängerkörper in Boxer-Anordnung angeordnet sind, wobei der Gruppen-Versatzwinkel (γ) 180° beträgt. Displacement device according to claim 2, characterized in that the two groups (A; B) displacement bodies are arranged in a boxer arrangement, wherein the group displacement angle (γ) is 180 °.
Verdrängereinrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass jede Gruppe drei jeweils im Winkelabstand (a) von 120° angeordnete Verdrängerkörper (1, 3, 5; 2, 4, 6) aufweist. Displacement device according to Claims 1 to 3, characterized in that each group has three displacement bodies (1, 3, 5, 2, 4, 6) each arranged at an angular distance (a) of 120 °.
Verdrängereinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Versatzwinkel (ß) 30° beträgt. Displacement device according to one of claims 1 to 4, characterized in that the offset angle (ß) is 30 °.
Verdrängereinrichtung für Fluide, insbesondere Flüssigkeiten, mit linear beweglichen, in die Verdrängereinrichtung eintauchenden Verdrängerkörpern (1 bis 6) jeweils über eine Pleuelstange (20) an Kurbelzapfen (21) einer fremdangetriebenen Kurbelwelle (10) angeschlossen sind, wobei Displacement device for fluids, in particular liquids, with linearly movable, immersed in the displacer Verdrängerkörpern (1 to 6) are each connected via a connecting rod (20) on crank pin (21) of a foreign-driven crankshaft (10), wherein
ein Antrieb (30) mit zwei entgegengesetzten Abtriebswellenenden vorgesehen ist, an die je eine Kurbelwelle (10) einer Verdrängerpumpe (31, 32) gekoppelt ist, welche jeweils eine Gruppe (A; B) Verdrängerkörper (1 bis 6) aufweist,  a drive (30) is provided with two opposite output shaft ends, to each of which a crankshaft (10) of a positive displacement pump (31, 32) is coupled, each having a group (A; B) displacement body (1 to 6),
die beiden Gruppen (A; B) Verdrängerkörper eine gleiche Anzahl Verdrängerkörper aufweisen,  the two groups (A; B) displacement bodies have the same number of displacement bodies,
die Kurbelzapfen (11 bis 16) für die Verdrängerkörper (A; B) jeder Gruppe in gleichen Winkelabständen (a) zueinander versetzt um die zugehörige Kurbelwelle (10) herum angeordnet sind, und  the crankpins (11 to 16) for the displacers (A; B) of each group are arranged at equal angular intervals (a) offset from each other about the associated crankshaft (10), and
die Kurbelzapfen (12, 14, 16) der einen Gruppe (B) zu denjenigen (11, 13, 15) der anderen Gruppe (A) um einen Versatzwinkel (ß) versetzt um die zugehörige Kurbelwelle angeordnet sind.  the crankpins (12, 14, 16) of one group (B) being offset from those (11, 13, 15) of the other group (A) by an offset angle (β) about the associated crankshaft.
Verdränger einrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Abtriebswellen und die Kurbelwellen miteinander fluchten. Displacer device according to claim 6, characterized in that the output shafts and the crankshafts are aligned.
Verdrängereinrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die beiden Gruppen (A; B) Verdrängerkörper unter einen Gruppen- Versatzwinkel (γ) um die Kurbelwellen (10) versetzt angeordnet sind. Displacement device according to claim 6 or 7, characterized in that the two groups (A; B) displacer are arranged offset at a group offset angle (γ) about the crankshaft (10).
Verdrängereinrichtung nach Anspruch 6 bis 8, dadurch gekennzeichnet, dass jede Gruppe (A; B) drei Verdrängerkörper (1, 3, 5; 2, 4, 6) aufweist, die jeweils im Winkelabstand (a) von 120° um die zugehörige Kurbelwelle (10) verteilt angeordnet sind. Displacement device according to claim 6 to 8, characterized in that each group (A; B) has three displacement bodies (1, 3, 5; 2, 4, 6) which are each angularly spaced (a) from 120 ° about the associated crankshaft ( 10) are arranged distributed.
10. Verdrängereinrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass der Versatzwinkel (ß) der Kurbelzapfen (11 bis 16) jeder Kurbelwelle (10) 30° beträgt. 10. Displacement device according to one of claims 6 to 9, characterized in that the offset angle (ß) of the crank pin (11 to 16) of each crankshaft (10) is 30 °.
11. Verdrängereinrichtung nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, dass der Antrieb (30) ein Elektromotor ist. 11. Displacement device according to one of claims 6 to 10, characterized in that the drive (30) is an electric motor.
12. Verdränger einrichtung nach Anspruch 11, dadurch gekennzeichnet, dass der Elektromotor (30) zwei entgegengesetzte, miteinander fluchtende Abtriebs wellenenden (34) hat, welche die Endpartien einer durchgehenden Elektromotorwelle bilden. 12. displacer device according to claim 11, characterized in that the electric motor (30) has two opposite, mutually aligned output shaft ends (34) which form the end portions of a continuous electric motor shaft.
EP14762011.6A 2014-09-11 2014-09-11 Displacing device Not-in-force EP3060800B1 (en)

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CN103945886A (en) 2011-05-24 2014-07-23 英瓦卡尔公司 Oxygen compressor with boost stage
EP2802776A4 (en) 2011-12-22 2015-12-09 Ssig Medical Device Co Ltd Pump
US20150086402A1 (en) 2012-03-30 2015-03-26 Ulvac Kiko, Inc. Pump device
CN104712720B (en) * 2013-12-12 2017-10-24 北京中清能发动机技术有限公司 A kind of circular slider-crank mechanism and a kind of plunger pump

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BR112017004768A2 (en) 2017-12-12
CN107076125A (en) 2017-08-18
EP3181902A1 (en) 2017-06-21
WO2016037655A1 (en) 2016-03-17
CA2960908A1 (en) 2016-03-17
ES2687955T3 (en) 2018-10-30
EP3060800B1 (en) 2018-04-18
US20170276123A1 (en) 2017-09-28

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