DE102009031634A1 - Pump e.g. displacement pump, for use as power or work machine for delivering gaseous, liquid fluid or particle stream, has housing with inlet and outlet for fluid, and sealing surfaces formed with roller bodies of roller bearings - Google Patents
Pump e.g. displacement pump, for use as power or work machine for delivering gaseous, liquid fluid or particle stream, has housing with inlet and outlet for fluid, and sealing surfaces formed with roller bodies of roller bearings Download PDFInfo
- Publication number
- DE102009031634A1 DE102009031634A1 DE200910031634 DE102009031634A DE102009031634A1 DE 102009031634 A1 DE102009031634 A1 DE 102009031634A1 DE 200910031634 DE200910031634 DE 200910031634 DE 102009031634 A DE102009031634 A DE 102009031634A DE 102009031634 A1 DE102009031634 A1 DE 102009031634A1
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- DE
- Germany
- Prior art keywords
- pump according
- housing
- rolling elements
- pump
- fluid
- 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.)
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Classifications
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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
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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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
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
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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
- F04C2/24—Rotary-piston machines or pumps of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions
- F04C2/28—Rotary-piston machines or pumps of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions of other than internal-axis type
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0007—Radial sealings for working fluid
- F04C15/0019—Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Pumpen arbeiten als Verdichter oder Verdränger und können in den meisten Ausführungen sowohl als Kraft- als auch als Arbeitsmaschine eingesetzt werden. Unabhängig davon, ob eine lineare Bewegung eines Hubkolbens oder eine rotatorische Bewegung in einem Drehkolben, einer Verzahnung oder einem Wälzkolben abläuft, entstehen immer zumindest an den Kontaktflächen Gleitbewegungen, die zu Verlusten durch Reibung oder durch Überströmungen aus dem Kompressions- oder Förderraum und zu Verschleiß führen, wobei dieser umso größer wird, je mehr Strömungsmedien Verwendung finden, die keine Zusätze von Schmiermitteln zulassen.pump work as compressors or displacers and can be used in most designs both be used as a power as well as a working machine. Independently of, whether a linear movement of a reciprocating piston or a rotary Movement in a rotary piston, a gearing or a Wälzkolben expires arise always at least at the contact surfaces sliding, resulting in losses by friction or by overflows the compression or pumping room and lead to wear, with this one gets bigger, ever more flow media Use find that no additives of lubricants.
Außerdem sind solche Pumpen sehr empfindlich gegenüber Temperaturschwankungen, da sich die einzelnen Bauteile ausdehnen und die so geänderten Relativtoleranzen zu Dichtungsverlusten durch Spalte oder zum Fressen der Bauteile durch erhöhte Pressungen führen.Besides, they are such pumps are very sensitive to temperature fluctuations, because the individual components expand and so changed Relative tolerances to seal losses by column or for eating of the components increased by Pressings lead.
Die vorliegende Erfindung löst dieses Problem, in dem die Kontakte an den Gehäusewänden und/oder die Kontakte an den Rotorteilen untereinander nicht als Gleit- sondern als Wälzbewegung ablaufen. Diese Wirkung wird dadurch erreicht, dass die Spalttoleranzen auf den Umfangsflächen Null werden können und die Rotorelemente ähnlich umlaufen wie Wälzkörper in einem Rollenlager.The present invention solves this problem, in which the contacts on the housing walls and / or the contacts on the rotor parts with each other not as sliding but as a rolling motion expire. This effect is achieved by the gap tolerances on the peripheral surfaces Can become zero and the rotor elements are similar revolve like rolling elements in a roller bearing.
Der Aufbau der erfindungsgemäßen Pumpe umfasst zwei Rotornaben, die einzeln oder beide (synchron und gegenläufig) angetrieben werden und die Innenringe je eines Wälzkörperlager bilden. Auf diesen Rotornaben laufen nun die Wälzkörper (= axiale Rollen) die durch einen Käfig geführt sind und mit halber Rotornabendrehzahl umlaufen. Sie wälzen dabei einerseits auf den Rotornaben (= Innenring) und der Gehäuseumfangswand (= Außenring) ab. In der Mitte kämmen die Wälzkörper ähnlich wie die Zähne einer Verzahnung, da der Abstand zwischen den Mittelpunkten der beiden Rotornaben kleiner ist als 2mal Nabenradius plus 2mal Wälzkörperdurchmesser und geringfügig größer als 2mal Nabenradius plus 1mal Wälzkörperdurchmesser. Dadurch ist sichergestellt, dass einerseits das Fluid nicht in der Mitte wieder zurückgepumpt wird, andererseits aber auch, dass die Wälzkörper in der Mitte nicht auf zwei Seiten je einen der Rotornaben berühren und so die Abrollbedingung nicht mehr erfüllt wäre.Of the Structure of the pump according to the invention comprises two rotor hubs driven individually or both (synchronous and counter-rotating) and the inner rings each form a rolling element bearing. On this Rotor hubs now run the rolling elements (= axial rollers) passing through a cage guided and circulating at half the speed of the rotary engine. They roll around on the one hand on the rotor hub (= inner ring) and the housing peripheral wall (= Outer ring) from. Comb in the middle the rolling elements similar to the teeth a gearing, since the distance between the centers of the both rotor hubs are smaller than 2 times the hub radius plus 2 times the rolling element diameter and slightly greater than 2 times hub radius plus 1 time roller diameter. This ensures that on the one hand the fluid is not in the Pumped back in the middle on the other hand, but also that the rolling elements in the middle not on two sides touch each one of the rotor hubs and so the rolling condition not fulfilled anymore would.
Die Wälzkörper rollen über einen Teil der Gehäuseumfangswand ab und verlassen zur Mitte hin den Wandkontakt, je nach Ausführung des Gehäuseprofils achtförmig mit stark ausgeprägter Mitteleinschnürung später oder oval ausgeführt mit gerader Verbindungskontur früher, um dann zur Mitte hin aufeinander zu treffen und dabei weiter aufeinander abzurollen.The Rolling elements roll over one Part of the housing peripheral wall off and leave the wall contact to the middle, depending on the design of the housing profile eight shaped with pronounced Mitteleinschnürung later or oval with straight connection contour earlier, then to meet each other towards the middle and continue on each other unroll.
Damit Spalte und Toleranzen eingestellt werden können, sind die Rotornaben, das Gehäuse und die Wälzkörper in einer bevorzugten Ausführung konisch ausgeführt, so dass einerseits durch axiale Verschiebung oder durch druckproportionale axiale Kräfte, die auf die Rotornaben wirken, eine einstellbare oder druckgeregelte Kontaktkraft an den Wälzkörpern entsteht. Die Geometrie aller Teile ist dabei so gewählt, dass die schlupffreie Abrollbedingung ähnlich wie bei Zylinderrollenlagern erfüllt wird, indem sich die Kegelachsen der Wälzkörper, der Gehäusekontur und der Rollennaben in einem Punkt auf der Drehachse treffen.In order to Column and tolerances can be set are the rotor hubs, the housing and the rolling elements in a preferred embodiment tapered, so that on the one hand by axial displacement or by pressure-proportional axial forces, which act on the rotor hubs, an adjustable or pressure-controlled Contact force on the rolling elements arises. The geometry of all parts is chosen so that the slip-free Rolling condition similar as fulfilled with cylindrical roller bearings is, by the cone axes of the rolling elements, the housing contour and hit the roller hubs at a point on the axis of rotation.
Um eine axiale Abichtung sicherzustellen, sind in einer bevorzugten Ausführung die Käfige als axiale Dichtung ausgeführt bzw. tragen axiale Dichtungen, die vorzugsweise den größtmöglichen Laufradius so einnehmen, dass beide Dichtungen gerade nicht im Mittelbereich kollidieren.Around To ensure axial relief are in a preferred execution the cages designed as an axial seal or wear axial seals, preferably the largest possible Run radius so that both seals just not in the middle area collide.
In einer weiteren Variante sind die Wälzkörper aus einem Material, mit guten tribologischen Eigenschaften mit selbstschmierender Wirkung wie Polyamid, PTFE, PEEK o. Ä. um damit auch Fluide pumpen zu können, die keine Schmierstoffe enthalten.In a further variant, the rolling elements of a material, with good tribological properties with self-lubricating effect such as polyamide, PTFE, PEEK o. Ä. to be able to pump fluids, which contain no lubricants.
In einer besonders kostengünstigen Ausführung weist die Pumpe nur einen Rotor auf und die Gehäusegeometrie ist ähnlich wie bei einer Zahnradpumpe oder einer Flügelzellenpumpe mit nur einem Rotor, jedoch werden erfindungsgemäß die Kontakt- bzw. Dichtflächen zwischen Gehäuse und Rotor in radialer Richtung über Wälzkörper gebildet, die auf der Gehäuseinnenkontur abrollen.In a particularly cost-effective execution the pump has only one rotor and the case geometry is similar to in a gear pump or a vane pump with only one rotor, However, according to the invention, the contact or sealing surfaces between housing and rotor in the radial direction over Rolling elements formed, the on the housing inner contour roll.
In einer besonders kompakt bauenden Pumpe gibt es einen Rotor mit umlaufenden Wälzkörpern wie beschrieben und einem rotierenden Sichelelement, das z. B. mit doppelter Drehzahl läuft, wenn 2 Wälzkörper im Rotor umlaufen und bei dem jeweils vor bzw. hinter dem Sichelelement der Zulauf und Ablauf angeordnet sind, und bei dem die Abdichtung zwischen der Zu- und Ablauf durch das Sichelelement und die Wälzkörper erfolgt.In a particularly compact pump, there is a rotor with rotating Rolling elements like described and a rotating sickle element z. With double Speed is running, if 2 rolling elements in the Rotor revolve and in each case in front of or behind the sickle element the inlet and outlet are arranged, and in which the seal between the inlet and outlet through the sickle element and the rolling elements takes place.
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910031634 DE102009031634A1 (en) | 2009-07-03 | 2009-07-03 | Pump e.g. displacement pump, for use as power or work machine for delivering gaseous, liquid fluid or particle stream, has housing with inlet and outlet for fluid, and sealing surfaces formed with roller bodies of roller bearings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910031634 DE102009031634A1 (en) | 2009-07-03 | 2009-07-03 | Pump e.g. displacement pump, for use as power or work machine for delivering gaseous, liquid fluid or particle stream, has housing with inlet and outlet for fluid, and sealing surfaces formed with roller bodies of roller bearings |
Publications (1)
Publication Number | Publication Date |
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DE102009031634A1 true DE102009031634A1 (en) | 2011-01-05 |
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Family Applications (1)
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DE200910031634 Withdrawn DE102009031634A1 (en) | 2009-07-03 | 2009-07-03 | Pump e.g. displacement pump, for use as power or work machine for delivering gaseous, liquid fluid or particle stream, has housing with inlet and outlet for fluid, and sealing surfaces formed with roller bodies of roller bearings |
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DE (1) | DE102009031634A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107191772A (en) * | 2017-06-02 | 2017-09-22 | 中国北方发动机研究所(天津) | A kind of vertical pivot arranges fuel pump structure |
-
2009
- 2009-07-03 DE DE200910031634 patent/DE102009031634A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107191772A (en) * | 2017-06-02 | 2017-09-22 | 中国北方发动机研究所(天津) | A kind of vertical pivot arranges fuel pump structure |
CN107191772B (en) * | 2017-06-02 | 2019-11-05 | 中国北方发动机研究所(天津) | A kind of vertical pivot arrangement fuel pump structure |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20150203 |