DE102006047849A1 - Rotary pump i.e. vane pump, for supplying pressurizing medium, has cam ring with groove in tangential area of pump chamber, and stays in effective connection with suction opening, where groove has smaller width than cam ring - Google Patents
Rotary pump i.e. vane pump, for supplying pressurizing medium, has cam ring with groove in tangential area of pump chamber, and stays in effective connection with suction opening, where groove has smaller width than cam ring Download PDFInfo
- Publication number
- DE102006047849A1 DE102006047849A1 DE200610047849 DE102006047849A DE102006047849A1 DE 102006047849 A1 DE102006047849 A1 DE 102006047849A1 DE 200610047849 DE200610047849 DE 200610047849 DE 102006047849 A DE102006047849 A DE 102006047849A DE 102006047849 A1 DE102006047849 A1 DE 102006047849A1
- Authority
- DE
- Germany
- Prior art keywords
- cam ring
- groove
- rotary pump
- pump according
- pump
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
-
- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/10—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
-
- 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
Abstract
Description
Die Erfindung betrifft eine Rotationspumpe zur Erzeugung eines Druckmittelstromes für einen Verbraucher, nach dem Oberbegriff des Anspruchs 1.The The invention relates to a rotary pump for generating a pressure medium flow for a consumer, according to the preamble of claim 1.
Rotationspumpen
zur Erzeugung eines Druckmittelstromes für einen Verbraucher, die vorzugsweise
in ihrem Fördervolumen
oder Hub verstellbar gebildet sind, sind beispielsweise durch die
Eine Saugöffnung zur Zufuhr von Fluid zu einer Pumpenkammer ist einer Drucköffnung zur Abfuhr eines unter Druck stehenden Druckmittelvolumens aus einer anderen Pumpenkammer gegenüberliegend angeordnet.A suction opening for supplying fluid to a pump chamber is a pressure port to Removal of a pressurized fluid volume from a opposite pump chamber arranged.
Der Kurvenring ist in einer Ausnehmung des Pumpengehäuses angeordnet und liegt darin an etwa gegenüberliegenden Wandabschnitten dichtend, aber gleit- oder verschiebbar an. Zwischen der Aussenseite des Kurvenringes und der Wand der Ausnehmung in dem Pumpengehäuse ist eine erste Druckkammer und dieser etwa gegenüberliegend eine zweite Druckammer, die voneinander fluidisch getrennt sind, ausgebildet. Die Druckkammern sind Bestandteile einer druckmittelbeaufschlagten Steileinrichtung für den Kurvenring.Of the Cam ring is disposed in a recess of the pump housing and is located therein at about the opposite Wall sections sealing, but sliding or sliding on. Between the outside of the cam ring and the wall of the recess in the pump housing is a first pressure chamber and this approximately opposite a second pressure chamber, which are fluidly separated from each other, formed. The pressure chambers are components of a pressurized Steeileinrichtung for the Cam ring.
Solche Rotationspumpen können Materialabtrag und Erosion aufweisen. Dies kommt hauptsächlich an Engstellen zustande, an welchen ein lokaler Unterdruck herrscht, wie etwa bei Flügelzellenpumpen im Spalt zwischen dem Flügelkopf und dem Kurvenring an dem ein Scherstrom in dem Druckmittel nicht nachgesaugt werden kann und eine gewisse Unterversorgung mit Druckmittel an dieser Engstelle auftritt.Such Rotary pumps can Material removal and erosion exhibit. This is mainly due Bottlenecks that have a local negative pressure, like with vane pumps in the gap between the wing head and the cam ring on which a shear flow in the pressure medium not can be sucked and a certain undersupply with pressure medium occurs at this bottleneck.
Der Erfindung liegt die Aufgabe zugrunde, eine verschleißarme Rotationspumpe zu schaffen.Of the Invention is based on the object, a low-wear rotary pump to accomplish.
Die Aufgabe wird mit einer Rotationspumpe mit den Merkmalen des Anspruchs 1 gelöst.The Task is with a rotary pump with the features of the claim 1 solved.
Dadurch dass in dem Kurvenring der Rotationspumpe tangential im Erstreckungsbereich der Pumpenkammer mit der Saugöffnung – dem Saugbereich also – eine Nut eingelassen ist, die eine geringere Breite als der Kurvenring aufweist, sodaß der Saugbereich des Kurvenringes von einem Kopf der Verdrängungselemente unter Bildung eines Spaltes zwischen den Verdrängungselementen und dem Kurvenring überstrichen werden kann, ist eine konstruktive Maßnahme getroffen, den Scherstrom in dem Druckmittel zwischen den Verdrängungselementen und dem Kurvenring besser nachsaugen zu können und die Strömungskavitation im Saugbereich zu verringern bzw. auszuschließen.Thereby that in the cam ring of the rotary pump tangentially in the extension area the pump chamber with the suction opening - the suction area So - one Groove is recessed, which has a smaller width than the cam ring has, so that the suction area of the curve ring from a head of the displacement elements under formation a gap between the displacement elements and the curve ring overlined can be, is a constructive action taken, the Scherstrom in the pressure medium between the displacement elements and the cam ring better to be able to absorb and the flow cavitation reduce or exclude in the suction area.
Bevorzugte Ausführungen ergeben sich aus den Unteransprüchen.preferred versions emerge from the dependent claims.
Da insbesondere bei Rotationspumpen, die als Flügelzellenpumpen ausgebildet sind, durch die ausgelösten Luftblasen die Druckwechselvorgänge in Umsteuerbereichen der Rotationspumpe, also im tangentialen Bereich des Kurvenringes zwischen Saugbereich und Druckbereich wesentlich beeinflußt werden, da der Elastizitätsmodul des Druckmittels durch die Anwesenheit von Luftblasen kleiner wird, entsteht unter Umständen eine großflächige Strömungskavitation im Saugbereich.There especially in rotary pumps, which are designed as vane pumps are triggered by the Bubbles the pressure changes in Diverting areas of the rotary pump, ie in the tangential area of the cam ring between suction and pressure range essential to be influenced, since the modulus of elasticity of the pressure medium due to the presence of air bubbles is smaller arises in certain circumstances a large-scale flow cavitation in the suction area.
Es kann daher zweckmäßig sein, die Nut über nahezu den gesamten Saugbereich tangential in dem Kurvenring auszubilden, zumindest aber in einem Teilbereich des Kurvenringes, in dem der größte Materialabtrag an dem Kurvenring erfahrungsgemäß stattfinden würde. Die Breite der Nut kann dabei maximiert werden, dass nur noch eine Abroll- oder Gleitfläche für die Verdrängungselemente in dem Kurvenring verbleibt, die ein verschleißarmes Überstreichen der Verdrängungselemente gewährleistet. Beispielsweise kann die Breite der Nut etwa 7/8 der Breite des Kurvenringes betragen.It may therefore be appropriate the groove over to form almost the entire suction area tangentially in the cam ring, but at least in a part of the curve ring in which the largest material removal take place on the cam ring experience would. The width of the groove can be maximized, that only one Rolling or sliding surface for the displacement elements remains in the cam ring, which is a low-wear sweeping the displacement elements guaranteed. For example, the width of the groove about 7/8 of the width of the cam ring be.
In einem besonders bevorzugten Ausführungsbeispiel der Rotationspumpe ist die Breite der Nut über deren Länge gleich.In a particularly preferred embodiment The rotary pump is equal to the width of the groove over its length.
Die Ränder der Nut können radial verlaufen, sodaß sich ein rechteckiger Querschnitt der Nut ergibt. Es kann auch zweckmäßig sein, die Ränder der Nut und deren Querschnitt selbst teilkreisförmig oder elliptisch oder in einer anderen, von der Kreisform abweichenden Form zu gestalten.The margins the groove can run radially, so that a rectangular cross-section of the groove results. It may also be appropriate the edges the groove and its cross section itself part-circular or elliptical or in another, deviating from the circular shape form.
Die Rotationspumpe kann als Flügelzellenpumpe gebildet sein und zur Druckmittelversorgung eines Aktuators einer Hilfskraft- oder Fremdkraftlenkung oder eines aktiven Fahrwerks eines Personen- oder Nutzkraftwagens Verwendung finden.The Rotary pump can be used as a vane pump be formed and the pressure medium supply of an actuator one Power steering or external power steering or an active chassis of a passenger or utility vehicle.
Die Erfindung wird nun näher anhand eines Ausführungsbeispiels beschrieben und anhand der beiliegenden Zeichnung wiedergegeben.The invention will now be described in detail with reference to a Embodiment described and reproduced with reference to the accompanying drawings.
In der Zeichnung zeigt:In the drawing shows:
In
Zwischen
den Flügeln
Um
insbesondere großflächige Strömungskavitation
in einem tangentialen Bereich
Wie
- 11
- Rotationspumperotary pump
- 22
- Pumpengehäusepump housing
- 33
- Kurvenringcam ring
- 44
- Rotorrotor
- 55
- Antriebswelledrive shaft
- 66
- Verdrängungselementedisplacement elements
- 7, 7'7, 7 '
- Pumpenkammerpump chamber
- 88th
- Drucköffnungpressure opening
- 99
- Saugöffnungsuction opening
- 1010
-
Bereich,
v.
7 Area, v.7 - 1111
- Nutgroove
- 1212
-
Kopf,
v.
6 Head, v.6 - 1313
- Saugbereichsuction area
- 1414
- Umsteuerbereichswitchover
- 1515
- Umsteuerbereichswitchover
- 1616
-
Rand,
v.
11 Edge, v.11 - 1717
- FlügelzellenpumpeVane pump
- 1818
- Wandwall
- 1919
- Flügelwing
- b b
-
Breite,
v.
11 Width, v.11 - bK b K
-
Breite,
v.
3 Width, v.3 - tt
-
Tiefe,
v.
11 Depth, v.11
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610047849 DE102006047849A1 (en) | 2006-10-10 | 2006-10-10 | Rotary pump i.e. vane pump, for supplying pressurizing medium, has cam ring with groove in tangential area of pump chamber, and stays in effective connection with suction opening, where groove has smaller width than cam ring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610047849 DE102006047849A1 (en) | 2006-10-10 | 2006-10-10 | Rotary pump i.e. vane pump, for supplying pressurizing medium, has cam ring with groove in tangential area of pump chamber, and stays in effective connection with suction opening, where groove has smaller width than cam ring |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006047849A1 true DE102006047849A1 (en) | 2008-04-17 |
Family
ID=39184778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610047849 Withdrawn DE102006047849A1 (en) | 2006-10-10 | 2006-10-10 | Rotary pump i.e. vane pump, for supplying pressurizing medium, has cam ring with groove in tangential area of pump chamber, and stays in effective connection with suction opening, where groove has smaller width than cam ring |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006047849A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8740592B2 (en) | 2011-02-18 | 2014-06-03 | GM Global Technology Operations LLC | Adjustable vane cell pump with a slide comprising recesses |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5716201A (en) * | 1995-07-31 | 1998-02-10 | Coltec Industries Inc. | Variable displacement vane pump with vane tip relief |
DE19942466A1 (en) * | 1998-09-10 | 2000-03-16 | Jidosha Kiki Co | Adjustable displacement pump comprises pump body with inner chamber and suction and delivery paths connected to inner chamber, together with cam ring |
-
2006
- 2006-10-10 DE DE200610047849 patent/DE102006047849A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5716201A (en) * | 1995-07-31 | 1998-02-10 | Coltec Industries Inc. | Variable displacement vane pump with vane tip relief |
DE19942466A1 (en) * | 1998-09-10 | 2000-03-16 | Jidosha Kiki Co | Adjustable displacement pump comprises pump body with inner chamber and suction and delivery paths connected to inner chamber, together with cam ring |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8740592B2 (en) | 2011-02-18 | 2014-06-03 | GM Global Technology Operations LLC | Adjustable vane cell pump with a slide comprising recesses |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |