EP1553299B1 - Positive displacement pump with a vane - Google Patents
Positive displacement pump with a vane Download PDFInfo
- Publication number
- EP1553299B1 EP1553299B1 EP20040023261 EP04023261A EP1553299B1 EP 1553299 B1 EP1553299 B1 EP 1553299B1 EP 20040023261 EP20040023261 EP 20040023261 EP 04023261 A EP04023261 A EP 04023261A EP 1553299 B1 EP1553299 B1 EP 1553299B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- positive displacement
- displacement pump
- pump according
- wing
- 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.)
- Expired - Fee Related
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Classifications
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- 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
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- 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
- F01C21/0881—Construction of vanes or vane holders the vanes consisting of two or more parts
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- 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
- F04C2/344—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 inner member
- F04C2/3441—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 inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F04C2/3442—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 inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
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- 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
- F04C2/344—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 inner member
- F04C2/3441—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 inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F04C2/3445—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 inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the vanes having the form of rollers, slippers or the like
Definitions
- the invention relates to a positive displacement pump with a wing for mutual separation of the two chambers in the housing space of the pump housing, having the features of the preamble of claim 1.
- a vane pump which has a divided wing, wherein the mutually facing ends of the wing parts have teeth and tooth gaps over which they engage with each other.
- the two wing parts are not adequately supported at their facing ends against tangential forces acting on the wing tips.
- a positive displacement pump in which the wing consists of two wing sections, the tiered facing end faces are formed and the individual stages nut- and spring-like mesh. Although such a wing can be changed in its length, however, the individual wing sections are supported only slightly from each other.
- the object underlying the invention is now to provide a positive displacement pump in which the wing parts are better supported against acting on the wing tips forces.
- the two wing sections abut each other at their mutually facing side surfaces and are thereby secured against tilting. Guiding the two wing sections is provided by the two facing side surfaces having grooves and tongues extending in the longitudinal direction of the wing, i. which are orthogonal to the drive shaft.
- the two wing sections can only slide together in the longitudinal direction and are prevented by the grooves and springs, to shift in the direction of the drive shaft.
- the wing sections are formed symmetrically, have a flat profile and / or that the wing sections are identical. These embodiments have the significant advantage that the wing sections are relatively simple and thus inexpensive to produce and that, in particular, by the identical design of the wing sections, storage is simplified.
- each wing section has, at least in sections, the complete height, length and / or thickness of the wing.
- the grooves and springs are designed to form a labyrinth seal.
- the space between the grooves and springs is dimensioned so that temperature fluctuations of the wing do not lead to jamming or loss of leadership.
- the grooves have a depth which corresponds to 20% to 50%, in particular 25% to 33%, of the thickness of the wing.
- a groove depth of 25% of the thickness of the wing the advantage is achieved that the entire wing has substantially the same wall thickness, so that in injection-molded wings no cavities must be provided so that the stability of the wing is not affected.
- a preferred embodiment provides that the wing sections have uniform wall thicknesses. This creates the possibility that the wing sections can be easily manufactured by injection molding. Die castings made by die casting are also conceivable.
- FIG. 1 shows a perspective view of a total of 10 designated positive displacement pump, which a Pump housing 12 and a cylinder head 14 includes, in which a drive shaft 16 is mounted.
- a rotor 18 is mounted, which has a parallel to the axis of the drive shaft 16 recess 20 which extends through the rotor center in the illustrated embodiment, wherein in the recess 20 a generally designated 22 wings is slidably mounted.
- the wing 22 protrudes with its two ends 24 and 26 out of the recess 20 of the rotor 18 and is by means of sealing strips 28 on the inner peripheral wall 30 of the rotor 18 at.
- the sealing strips 28 are pivotally attached to the ends 24 and 26, so that they rest permanently on the inner peripheral wall 30 via two line contacts.
- the ends 24 and 26 may lie directly against the inner peripheral wall 30 of the rotor 18.
- the wing 22 is shown in a perspective view and it is clearly seen that this apart from the two sealing strips 28 consists of two wing sections 32 and 34.
- the two wing sections 32 and 34 are identical and lie with their side surfaces 36 to each other. These side surfaces 36 are provided with grooves 38 and springs 40 which extend in an alternating sequence in the direction of the longitudinal axis of the blade 22, i. orthogonal to the axis of the drive shaft 16 are aligned.
- the cross section of the grooves 38 and springs 40 is substantially rectangular, as is apparent from the cross section V-V in Figure 5.
- each wing section 32 and 34 is offset by a shoulder 42 in its length and height and that the two wing sections 32 and 34 via a paragraph 44 in the Thickness is deposited.
- each wing section 32 and 34 extends over approximately 90% of the overall length of the wing 22, which has the advantage that the wing sections 32 and 34 are supported within the recess 20 at points radially outwardly, ie radially outward Area of the rotor circumference are, so that the tilting moments relatively high counter moments can be met. The tilting tendency is thus reduced to a minimum.
- Figure 3 which shows a section III-III through the center of the wing 22 in the longitudinal direction, shows the engagement of the spring 40 of the wing section 34 in the grooves 38 of the wing section 32 and in particular the over a wide range extending overlap, resulting in a optimal guidance, on the other hand causes a very good seal.
- the springs 40 bear not only with their side surfaces on the side walls of the grooves 38, but are also based with their base at the bottom of the groove 38 from.
- Such a configured wing 22 can be extended by more than 50% of its length, yet provides optimum rigidity and guidance, and does not tend to tilt within the recess 20 of the rotor 18.
- FIG. 5 clearly shows how the wing section 34 completely overlaps the wing section 32 on the upper side shown there, thereby also undergoing support on the opposite side of the recess 20.
- the grooves 38 and springs 40 extend over about 20% of the total thickness of the blade 22, thereby providing the uniform thicknesses of the wing sections 32 and 34 as much as possible.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Die Erfindung betrifft eine Verdrängerpumpe mit einem Flügel zum gegenseitigen Trennen der beiden Kammern im Gehäuseraum des Pumpengehäuses, mit den Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a positive displacement pump with a wing for mutual separation of the two chambers in the housing space of the pump housing, having the features of the preamble of claim 1.
Aus der DE-A-35 37 158 ist eine Flügelzellenpumpe bekannt, die einen geteilten Flügel aufweist, wobei die einander zugewandten Enden der Flügelteile Zähne und Zahnlücken aufweisen, über welche sie ineinander greifen. Bei diesen Ausführungsformen sind die beiden Flügelteile an ihren einander zugewandt Enden nicht ausreichend gegen an den Flügelspitzen angreifende Tangentialkräfte abgestützt.From DE-A-35 37 158 a vane pump is known, which has a divided wing, wherein the mutually facing ends of the wing parts have teeth and tooth gaps over which they engage with each other. In these embodiments, the two wing parts are not adequately supported at their facing ends against tangential forces acting on the wing tips.
Aus der EP-A-1 134 417 ist eine Verdrängerpumpe bekannt, bei der der Flügel aus zwei Flügelteilstücken besteht, deren einander zugewandten Stirnseiten gestuft ausgebildet sind und die einzelnen Stufen nut- und federartig ineinander greifen. ein derartiger Flügel kann zwar in seiner Länge verändert werden, jedoch stützen sich die einzelnen Flügelteilstücke nur geringfügig aneinander ab.From EP-A-1 134 417 a positive displacement pump is known, in which the wing consists of two wing sections, the tiered facing end faces are formed and the individual stages nut- and spring-like mesh. Although such a wing can be changed in its length, however, the individual wing sections are supported only slightly from each other.
Die der Erfindung zugrunde liegende Aufgabe besteht nun darin, eine Verdrängerpumpe anzugeben, bei der die Flügelteile gegen an den Flügelspitzen angreifende Kräfte besser abgestützt sind.The object underlying the invention is now to provide a positive displacement pump in which the wing parts are better supported against acting on the wing tips forces.
Diese Aufgabe wird erfindungsgemäß durch eine Verdrängerpumpe gelöst, die die Merkmale des Anspruches 1 aufweist.This object is achieved by a positive displacement pump having the features of claim 1.
Bei der erfindungsgemäßen Verdrängerpumpe liegen die beiden Flügelteilstücke an ihren einander zugekehrten Seitenflächen aneinander an und werden dadurch gegen Verkippen gesichert. Eine Führung der beiden Flügelteilstücke wird dadurch geschaffen, dass die beiden einander zugekehrten Seitenflächen Nuten und Federn aufweisen, die in Längsrichtung des Flügels sich erstrecken, d.h. die orthogonal zur Antriebswelle verlaufen. Die beiden Flügelteilstücke können also lediglich in Längsrichtung aneinander gleiten und werden über die Nuten und Federn daran gehindert, in Richtung der Antriebswelle sich zu verlagern.In the displacement pump according to the invention, the two wing sections abut each other at their mutually facing side surfaces and are thereby secured against tilting. Guiding the two wing sections is provided by the two facing side surfaces having grooves and tongues extending in the longitudinal direction of the wing, i. which are orthogonal to the drive shaft. Thus, the two wing sections can only slide together in the longitudinal direction and are prevented by the grooves and springs, to shift in the direction of the drive shaft.
Bei Ausführungsformen ist vorgesehen, dass die Flügelteilstücke symmetrisch ausgebildet sind, ein Flachprofil aufweisen und/oder dass die Flügelteilstücke identisch sind. Diese Ausgestaltungen haben den wesentlichen Vorteil, dass die Flügelteilstücke relativ einfach und somit preiswert herstellbar sind und dass, insbesondere durch die identische Ausgestaltung der Flügelteilstücke, die Lagerhaltung vereinfacht wird.In embodiments, it is provided that the wing sections are formed symmetrically, have a flat profile and / or that the wing sections are identical. These embodiments have the significant advantage that the wing sections are relatively simple and thus inexpensive to produce and that, in particular, by the identical design of the wing sections, storage is simplified.
Eine optimale Führung der Flügelteilstücke auch bei sehr großen Längenänderungen des Flügels wird dadurch erreicht, dass sich die Nuten und Federn über 50% bis 98%, insbesondere 75% bis 95% der Länge des Flügels erstrecken. Hierdurch wird optimal ein Verkanten der Flügelteilstücke verhindert und die Flügelteilstücke stützen sich an Druckpunkten im Rotor ab, die weit voneinander entfernt sind.An optimal guidance of the wing sections even with very large changes in length of the wing is achieved in that the grooves and springs over 50% to 98%, in particular 75% to 95% of the length of the wing. As a result, an optimal tilting of the wing sections is prevented and the wing sections are based on pressure points in the rotor, which are far away from each other.
Eine weitere Abstützung der Flügelteilstücke sowohl in Richtung der Höhe des Flügels, der Länge des Flügels und der Dicke des Flügels wird dadurch erzielt, dass der Flügel in seiner Höhe, in seiner Länge und/oder in seiner Dicke teilweise abgesetzt ist. Jedes Flügelteilstück weist zumindest abschnittsweise die komplette Höhe, Länge und/oder Dicke des Flügels auf.Further support of the wing sections both in the direction of the height of the wing, the length of the wing and the thickness of the wing is achieved in that the wing in its height, in its length and / or in its thickness is partially discontinued. Each wing section has, at least in sections, the complete height, length and / or thickness of the wing.
Die Nuten und Federn sind so ausgebildet, dass sie eine Labyrinthdichtung bilden. Dabei ist der Freiraum zwischen den Nuten und Federn so bemessen, dass Temperaturschwankungen des Flügels nicht zu einem Klemmen bzw. zum Verlust der Führung führen.The grooves and springs are designed to form a labyrinth seal. In this case, the space between the grooves and springs is dimensioned so that temperature fluctuations of the wing do not lead to jamming or loss of leadership.
Bei einem besonders bevorzugten Ausführungsbeispiel weisen die Nuten eine Tiefe auf, die 20% bis 50%, insbesondere 25% bis 33%, der Dicke des Flügels entspricht. Bei einer Nuttiefe von 25% der Dicke des Flügels wird der Vorteil erzielt, dass der gesamte Flügel im Wesentlichen gleiche Wanddicken aufweist, sodass bei spritzgegossenen Flügeln keine Hohlräume vorgesehen werden müssen, sodass die Stabilität des Flügels nicht beeinträchtigt wird.In a particularly preferred embodiment, the grooves have a depth which corresponds to 20% to 50%, in particular 25% to 33%, of the thickness of the wing. With a groove depth of 25% of the thickness of the wing, the advantage is achieved that the entire wing has substantially the same wall thickness, so that in injection-molded wings no cavities must be provided so that the stability of the wing is not affected.
Ein bevorzugtes Ausführungsbeispiel sieht vor, dass die Flügelteilstücke gleichmäßige Wandstärken aufweisen. Dadurch wird die Möglichkeit geschaffen, das die Flügelteilstücke problemlos im Spritzgießverfahren hergestellt werden können. Im Druckgussverfahren hergestellte Flügelteilstücke sind ebenfalls denkbar.A preferred embodiment provides that the wing sections have uniform wall thicknesses. This creates the possibility that the wing sections can be easily manufactured by injection molding. Die castings made by die casting are also conceivable.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein besonders bevorzugtes Ausführungsbeispiel im Einzelnen beschrieben ist. Dabei können die in der Zeichnung dargestellten sowie in der Beschreibung und in den Ansprüchen erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawing, a particularly preferred embodiment is described in detail. The features shown in the drawing and mentioned in the description and in the claims may each be essential to the invention individually or in any combination.
In der Zeichnung zeigen:
- Figur 1:
- eine schaubildliche perspektivische Ansicht in den geöffneten Gehäuseraum einer Verdrängerpumpe;
- Figur 2:
- eine perspektivische Darstellung des Pumpenflügels;
- Figur 3:
- einen Schnitt III-III gemäß Figur 4 durch die Längsseite des Flügels;
- Figur 4:
- einen Schnitt IV-IV gemäß Figur 3; und
- Figur 5:
- einen Querschnitt V-V gemäß Figur 3.
- FIG. 1:
- a perspective perspective view into the open housing space of a positive displacement pump;
- FIG. 2:
- a perspective view of the pump blade;
- FIG. 3:
- a section III-III according to Figure 4 through the longitudinal side of the wing;
- FIG. 4:
- a section IV-IV according to Figure 3; and
- FIG. 5:
- a cross section VV of Figure 3.
Die Figur 1 zeigt in schaubildlicher Darstellung eine insgesamt mit 10 bezeichnete Verdrängerpumpe, welche ein Pumpengehäuse 12 und einen Zylinderkopf 14 umfasst, in welchem eine Antriebswelle 16 gelagert ist. Auf die Antriebswelle 16 ist ein Rotor 18 aufgesetzt, der eine zur Achse der Antriebswelle 16 parallele Aussparung 20, welche beim dargestellten Ausführungsbeispiel durch die Rotormitte verläuft, aufweist, wobei in der Aussparung 20 ein insgesamt mit 22 bezeichneter Flügel verschieblich gelagert ist. Der Flügel 22 ragt mit seinen beiden Enden 24 und 26 aus der Aussparung 20 des Rotors 18 heraus und liegt mittels Abdichtleisten 28 an der Innenumfangswand 30 des Rotors 18 an. Die Abdichtleisten 28 sind schwenkbar an den Enden 24 und 26 befestigt, so dass diese über zwei Linienberührungen an der Innenumfangswand 30 permanent anliegen. Bei einfachen Ausführungsbeispielen können auch die Enden 24 und 26 direkt an der Innenumfangswand 30 des Rotors 18 anliegen.1 shows a perspective view of a total of 10 designated positive displacement pump, which a Pump housing 12 and a
In der Figur 2 ist der Flügel 22 in perspektivischer Darstellung wiedergegeben und es ist deutlich erkennbar, dass dieser abgesehen von den beiden Dichtleisten 28 aus zwei Flügelteilstücken 32 und 34 besteht. Die beiden Flügelteilstücke 32 und 34 sind identisch ausgebildet und liegen mit ihren Seitenflächen 36 aneinander an. Diese Seitenflächen 36 sind mit Nuten 38 und Federn 40 versehen, die in abwechselnder Folge sich in Richtung der Längsachse des Flügels 22 erstrecken, d.h. orthogonal zur Achse der Antriebswelle 16 ausgerichtet sind. Der Querschnitt der Nuten 38 und Federn 40 ist im wesentlichen rechteckförmig, wie sich aus dem Querschnitt V-V in Figur 5 ergibt.In the figure 2, the
Aus der Figur 2 ist noch ersichtlich, dass jedes Flügelteilstück 32 und 34 über einen Absatz 42 in seiner Länge und in seiner Höhe abgesetzt ist und dass die beiden Flügelteilstücke 32 und 34 über einen Absatz 44 in der Dicke abgesetzt ist. Außerdem ist erkennbar, dass sich jedes Flügelteilstück 32 und 34 über etwa 90% der Gesamtlänge des Flügels 22 erstreckt, was den Vorteil hat, dass sich die Flügelteilstücke 32 und 34 innerhalb der Aussparung 20 an Punkten abstützen, die radial relativ weit außen, d.h. im Bereich des Rotorumfanges liegen, so dass den Kippmomenten relativ hohe Gegenmomente entgegengebracht werden können. Die Kippneigung wird auf diese Weise auf ein Minimum reduziert.From Figure 2 it can be seen that each
Die Figur 3, die einen Schnitt III-III durch die Mitte des Flügels 22 in Längsrichtung darstellt, zeigt den Eingriff der Feder 40 des Flügelteilstücks 34 in die Nuten 38 des Flügelteilstücks 32 und insbesondere die über einen weiten Bereich verlaufende Überlappung, was zum Einen eine optimale Führung, zum Anderen eine sehr gute Abdichtung bewirkt. Die Federn 40 liegen nicht nur mit ihren Seitenflächen an den Seitenwänden der Nuten 38 an, sondern stützen sich auch mit ihrer Basis am Grund der Nut 38 ab. Ein derart ausgestalteter Flügel 22 kann um mehr als 50% seiner Länge verlängert werden, und bietet dennoch eine optimale Steifigkeit und Führung und neigt nicht zum Kippen innerhalb der Aussparung 20 des Rotors 18.Figure 3, which shows a section III-III through the center of the
In der Figur 5 ist anschaulich dargestellt, wie das Flügelteilstück 34 an der dort dargestellten Oberseite das Flügelteilstück 32 vollständig übergreift und dadurch auch eine Abstützung auf der Gegenseite der Aussparung 20 erfährt. Die Nuten 38 und Federn 40 erstrecken sich über etwa 20% der Gesamtdicke des Flügels 22, wodurch weitestgehend die gleichmäßigen Dicken bei den Flügelteilstücken 32 und 34 geschaffen werden.FIG. 5 clearly shows how the
Claims (11)
- Positive displacement pump (10) with a blade (22) for mutual separation of two chambers in a housing chamber, wherein the blade (22) is drivable by a drive shaft (16) mounted in the pump housing (12) and is thereby guided radially displaceable relative to said drive shaft in a plane parallel to the drive shaft (16), in that it is held in a cut-out (20) of a rotor (18), said rotor being rotatably mounted in the housing chamber and drivable by the drive shaft (16), and said blade lies in sealing manner at its end sides against the internal peripheral wall (30) of the housing chamber, whereby the blade (22) has two mutually aligned and mutually independently movable blade parts (32 and 34), which lie partially overlapping against one another, characterised in that the blade parts (32 and 34) engage with one another in tongue-and-groove manner at their mutually facing side surfaces, whereby the grooves (38) and tongues (40) run orthogonally to the drive shaft (16).
- Positive displacement pump according to claim 1, characterised in that the blade parts (32 and 34) are symmetrically constructed.
- Positive displacement pump according to claim 1 or 2, characterised in that the blade parts (32 and 34) have a flat profile.
- Positive displacement pump according to one of the preceding claims, characterised in that the blade parts (32 and 34) are identical.
- Positive displacement pump according to one of the preceding claims, characterised in that the grooves (38) and tongues (40) extend over 50% to 98%, and in particular over 75% to 95%, of the length of the blade (22).
- Positive displacement pump according to one of the preceding claims, characterised in that the blade (22) is partially stepped in its height.
- Positive displacement pump according to one of the preceding claims, characterised in that the blade (22) is partially stepped in its length.
- Positive displacement pump according to one of the preceding claims, characterised in that the blade (22) is partially stepped in its thickness.
- Positive displacement pump according to one of the preceding claims, characterised in that the grooves (38) and tongues (40) form a labyrinth seal.
- Positive displacement pump according to one of the preceding claims, characterised in that the grooves (38) have a depth which corresponds to 20% to 50%, and in particular 25% to 33%, of the thickness of the blade (22).
- Positive displacement pump according to one of the preceding claims, characterised in that the blade parts (32 and 34) have even wall thicknesses.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004001840 | 2004-01-07 | ||
DE200410001840 DE102004001840B3 (en) | 2004-01-07 | 2004-01-07 | Positive-displacement pump comprises a blade having blade parts that engage with each other on facing side surfaces by a tongue and groove connection consisting of grooves and tongues that run orthogonally to a drive shaft |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1553299A2 EP1553299A2 (en) | 2005-07-13 |
EP1553299A3 EP1553299A3 (en) | 2006-01-11 |
EP1553299B1 true EP1553299B1 (en) | 2007-01-10 |
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ID=34485655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20040023261 Expired - Fee Related EP1553299B1 (en) | 2004-01-07 | 2004-09-30 | Positive displacement pump with a vane |
Country Status (2)
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EP (1) | EP1553299B1 (en) |
DE (2) | DE102004001840B3 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007042134A1 (en) * | 2005-10-13 | 2007-04-19 | Joma-Hydromechanic Gmbh | Rotor pump and vane for a rotor pump |
DE102005050001A1 (en) * | 2005-10-13 | 2007-04-19 | Joma-Hydromechanic Gmbh | rotor pump |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1250968A (en) * | 1960-03-10 | 1961-01-13 | Baghuis N V | Rotating vane pump or motor |
DE3537158A1 (en) * | 1984-10-26 | 1986-06-05 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Toothed vane-cell pump |
US5242285A (en) * | 1989-12-12 | 1993-09-07 | Acd, Inc. | Cryogenic vane pump |
DE50100666D1 (en) * | 2000-03-15 | 2003-10-30 | Joma Hydromechanic Gmbh | displacement |
-
2004
- 2004-01-07 DE DE200410001840 patent/DE102004001840B3/en not_active Expired - Fee Related
- 2004-09-30 EP EP20040023261 patent/EP1553299B1/en not_active Expired - Fee Related
- 2004-09-30 DE DE200450002613 patent/DE502004002613D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE502004002613D1 (en) | 2007-02-22 |
EP1553299A2 (en) | 2005-07-13 |
EP1553299A3 (en) | 2006-01-11 |
DE102004001840B3 (en) | 2005-05-25 |
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