DE102007060883A1 - Fluidic work machine e.g. single-stroke vane pump, has pressure discharge device subjecting working chambers with system pressure in pre-compression region, where pressure discharge device is mounted in control discs or housing - Google Patents
Fluidic work machine e.g. single-stroke vane pump, has pressure discharge device subjecting working chambers with system pressure in pre-compression region, where pressure discharge device is mounted in control discs or housing Download PDFInfo
- Publication number
- DE102007060883A1 DE102007060883A1 DE200710060883 DE102007060883A DE102007060883A1 DE 102007060883 A1 DE102007060883 A1 DE 102007060883A1 DE 200710060883 DE200710060883 DE 200710060883 DE 102007060883 A DE102007060883 A DE 102007060883A DE 102007060883 A1 DE102007060883 A1 DE 102007060883A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- fluidic
- work machine
- vane pump
- discharge device
- 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- Withdrawn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
- 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
-
- 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
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
- F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
-
- 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
- F04C15/0023—Axial sealings for working fluid
- F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
Abstract
Description
Die Erfindung betrifft eine hydraulische Arbeitsmaschine gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to a hydraulic working machine according to the preamble of claim 1
Aus dem Datenblatt RD10515/10.05 der Firma Bosch Rexroth AG sind beispielsweise als Flügelzellenpumpen ausgebildete hydraulische Arbeitsmaschinen bekannt. Diese Flügelzellenpumpen mit verstellbarem Verdrängungsvolumen bestehen im Wesentlichen aus einem Gehäuse, einem Rotor, mehreren Flügeln, einem Statorring, einem Druckregler und einer Stellschraube. Der kreisförmige Statorring wird von einem kleinen Pendel-Stellkolben und einem großen Pendel-Stellkolben eingespannt. Der dritte Auflagepunkt des Statorringes ist eine Höhenstellschraube. Innerhalb des Statorringes dreht sich der angetriebene Rotor, so dass die im Rotor geführten Flügel durch Zentrifugalkraft gegen den Statorring gedrückt werden. Die Arbeitsräume, auch Zellen genannt, die jeweils begrenzt sind durch zwei benachbarte Flügel, den Rotor, den Statorring sowie den axial abdichtenden Steuerscheiben, transportieren ein Druckmedium von einer Saugseite zu einer Druckseite, von dort wird es druckbeaufschlagt dem Systemdruck zugeführt. Dabei wird das Zellenvolumen durch die Drehung des Rotors im Saugbereich zunehmend größer und die Zellen füllen sich dabei über den Saugkanal mit Flüssigkeit. Mit Erreichen des größten Zellenvolumens werden die Zellen von der Saugseite getrennt. Bei weiterer Drehung des Rotors erfährt das abgeschossene Druckmedium in der Zelle eine Vorkompression, die durch die Einschraubtiefe der Höhenstellschraube auf den maximalen Systemdruck abzustimmen ist. Nach weiterer Drehung erhalten die Zellen Verbindung zur Druckseite, verengen sich weiter und drücken die Flüssigkeit über den Druckkanal in das System.Out The data sheet RD10515 / 10.05 of the company Bosch Rexroth AG are for example trained as vane pumps hydraulic machines known. These vane pumps with adjustable displacement consist essentially of a housing, a rotor, several wings, a stator ring, a pressure regulator and a Screw. The circular stator ring is from a small pendulum control piston and a large pendulum control piston clamped. The third bearing point of the stator ring is a height adjustment screw. Within the stator ring, the driven rotor rotates, so that the blades guided in the rotor by centrifugal force pressed against the stator ring. The workrooms, also called cells, each bounded by two adjacent ones Wing, the rotor, the stator and the axially sealing Control discs, transport a pressure medium from a suction side to a pressure side, from there it is pressurized to the system pressure fed. At the same time, the cell volume becomes rotatable the rotor in the suction increasingly larger and the cells fill up via the suction channel with liquid. With reaching the largest cell volume the cells are separated from the suction side. Upon further rotation of the rotor experiences the fired pressure medium in the Cell a precompression, by the screwing depth of the height adjustment screw to match the maximum system pressure. After further rotation the cells get connected to the pressure side, narrowing further and push the fluid over the pressure channel in the system.
Zur Sicherung der Pumpen-Funktion wird bei der Inbetriebnahme der Statorring von einer hinter dem großen Stellkolben sitzenden Feder in seiner exzentrischen Lage gehalten (Verdrängerstellung). Mit dem Druckaufbau im System wird die Rücksei te des kleinen Stellkolbens über einen Kanal immer mit dem Systemdruck beaufschlagt. In Förderstellung wird auch die Rückseite des großen Stellkolbens über eine Bohrung im Reglerkolben mit Systemdruck beaufschlagt. Der Stellkolben mit der größeren Fläche hält den Statorring in seiner exzentrischen Lage. Die Pumpe verdrängt das Fluid bei einem Druck, der unterhalb eines am Druckregler eingestellten Nullhubdruckes liegt. Der Reglerkolben wird von der Feder in einer bestimmten Stellung gehalten.to Securing the pump function is when commissioning the stator ring from a spring sitting behind the large adjusting piston held in its eccentric position (displacement position). With the build up of pressure in the system, the back of the small Control piston via a channel always with the system pressure applied. In support position is also the back of the large actuating piston via a bore in the regulator piston subjected to system pressure. The actuator piston with the larger one Surface holds the stator ring in its eccentric Location. The pump displaces the fluid at a pressure that is below a zero stroke pressure set at the pressure regulator. The regulator piston is held by the spring in a certain position held.
Nachteilig bei derartigen hydraulischen Arbeitsmaschinen ist, dass sich der im Bereich der Vorkompression aufbauende Druck beim Übergang zur Druckseite schlagartig entlädt, was beim Betreiben der Flügelzellenpumpe zu ungewünschten Geräuschbildungen und einem hohen Verschleiß führt. Des Weiteren kommt es durch das weitestgehend inkompressible Hydraulikfluid welches durch Lufteinschlüsse kompressibel wird, zu einer Volumenstrompulsation.adversely In such hydraulic machines is that the Pressure building up in the area of precompression at the transition to the pressure side suddenly discharges, what in the operation of the Vane pump for unwanted noise and leads to high wear. Furthermore it comes through the largely incompressible hydraulic fluid which By air entrapment becomes compressible, to a volumetric flow pulsation.
Um
diese Effekte zu beseitigen, weist die in der Druckschrift
Demgegenüber liegt der Erfindung die Aufgabe zugrunde, eine hydraulische Arbeitsmaschine zu schaffen, bei der eine Eliminierung der Druckpulsation bei gleichzeitig hohem volumetrische Wirkungsgrad mit minimalem fertigungstechnischen Aufwand ermöglicht ist.In contrast, the invention has for its object to a hydraulic machine to create at the same time an elimination of the pressure pulsation high volumetric efficiency with minimal production engineering Effort is possible.
Diese Aufgabe wird durch eine hydraulische Arbeitsmaschine mit den Merkmalen des Patentanspruchs 1 gelöst.These Task is by a hydraulic machine with the features of claim 1.
Die erfindungsgemäße Arbeitsmaschine hat eine Vielzahl von Arbeitsräumen mit sich zyklisch während der Drehung des Rotors ändernden Volumen, die ein Fluid in einem Niederdruckbereich aufnehmen, über einen Vorkompressionsbereich führen und in einem Hochdruckbereich dem System zuführen. Dabei ermöglicht eine Druck entlastungseinrichtung im Bereich der Vorkompression den Arbeitsraum mit dem Systemdruck zu beaufschlagen.The inventive work machine has a variety of work spaces with themselves cyclically during the Rotation of the rotor changing volume, which is a fluid in record a low pressure area, over a Vorkompressionsbereich lead and in a high-pressure area to the system. This allows a pressure relief device in the area the pre-compression to pressurize the working space with the system pressure.
Vorteilhafterweise ist die Druckentlastungseinrichtung mit einer den Vorkompressionsbereich mit der Systemdruckleitung verbindenden Druckleitung ausgeführt, wobei der durch Kompression entstehende Überdruck im Vergleich zum herrschenden Druck im Druckbereich über die Druckleitung zum System hin abgebaut wird.advantageously, is the pressure relief device with a the Vorkompressionsbereich with running the system pressure line connecting pressure line, where the compression resulting by compression in comparison to the prevailing pressure in the pressure range via the pressure line down to the system.
Ein in der Druckleitung angeordnetes Rückschlagventil verhindert bei einem Ausführungsbeispiel ein Rückströmen des Mediums aus dem System in den Arbeitsraum. Dabei kann das Rückschlagventil auch als Rückschlagklappe oder funktionsverwandte Ventilarten ausgestaltet sein.One In the pressure line arranged check valve prevents in one embodiment, a backflow of the medium from the system into the working space. In this case, the check valve also as check valve or functionally related valve types be designed.
Eine besonders kompakte Bauweise der Arbeitsmaschine wird erreicht, wenn die Druckentlastungseinrichtung in den seitlich angeordneten, axial abdichtenden Steuerscheiben oder im Gehäuse der Arbeitsmaschine untergebracht ist.A particularly compact design of the working machine is achieved when the pressure relief device in the laterally arranged, axially sealing Control discs or housed in the housing of the working machine is.
Vorzugsweise ist die fluidische Arbeitsmaschine als eine Flügelzellenpumpe ausgeführt. Die erfindungsgemäße Konstruktion kann jedoch prinzipiell bei allen nicht ventilgesteuerten Bauarten eingesetzt werden.Preferably is the fluidic work machine as a vane pump executed. The construction according to the invention However, it can in principle be used with all non-valve-controlled designs be used.
Handelt es sich bei der Flügelzellenpumpe um eine doppelhubige Flügelzellenpumpe, so ist die Druckentlastungseinrichtung an beiden Vorkompressionsbereichen angeordnet.These it is in the vane pump to a double-stroke Vane pump, so is the pressure relief device arranged at both Vorkompressionsbereichen.
Sonstige vorteilhafte Weiterbildungen der Erfindung sind Gegenstand weiterer Unteransprüche.other advantageous developments of the invention are the subject of further Dependent claims.
Nachstehend wird die Erfindung anhand eines bevorzugter Ausführungsbeispiels näher erläutert. Es zeigen:below The invention is based on a preferred embodiment explained in more detail. Show it:
Die
Die
Arbeitsräume
Die
horizontale Verstellung des Statorrings
In
einem nicht näher dargestellten Ausführungsbeispiel
ist die Druckentlastungseinrichtung
Die
erfindungsgemäße Arbeitsmaschine
Offenbart
ist eine hydraulische Arbeitsmaschine
- 11
- Hydraulische Arbeitsmaschinehydraulic working machine
- 1010
- Gehäusecasing
- 1212
- Deckelcover
- 1414
- Rotorrotor
- 1616
- Flügelwing
- 1818
- Innenumfangsfläche des StatorringsInner circumferential surface of the stator ring
- 2020
- Statorringstator
- 2222
- Arbeitsraumworking space
- 2424
- kleiner Stellkolbensmaller actuating piston
- 2626
- großer Stellkolbengreater actuating piston
- 2828
- Höhenstellschraubeheight adjustment screw
- 3030
- Saugseitesuction
- 3232
- Druckseitepressure side
- 3434
- VorkompressionsbereichVorkompressionsbereich
- 3636
- DruckentlastungseinrichtungPressure relief device
- 3838
- Druckleitungpressure line
- 3939
- Druckkanalpressure channel
- 4040
- Rückschlagventilcheck valve
- 4242
- Steuerscheibecontrol disc
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 1577556 A2 [0005] EP 1577556 A2 [0005]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710060883 DE102007060883A1 (en) | 2007-12-18 | 2007-12-18 | Fluidic work machine e.g. single-stroke vane pump, has pressure discharge device subjecting working chambers with system pressure in pre-compression region, where pressure discharge device is mounted in control discs or housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710060883 DE102007060883A1 (en) | 2007-12-18 | 2007-12-18 | Fluidic work machine e.g. single-stroke vane pump, has pressure discharge device subjecting working chambers with system pressure in pre-compression region, where pressure discharge device is mounted in control discs or housing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007060883A1 true DE102007060883A1 (en) | 2009-06-25 |
Family
ID=40689510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200710060883 Withdrawn DE102007060883A1 (en) | 2007-12-18 | 2007-12-18 | Fluidic work machine e.g. single-stroke vane pump, has pressure discharge device subjecting working chambers with system pressure in pre-compression region, where pressure discharge device is mounted in control discs or housing |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007060883A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2568180A1 (en) * | 2011-09-12 | 2013-03-13 | Pierburg Pump Technology GmbH | Vane pump |
DE102015100451A1 (en) | 2014-05-04 | 2015-11-05 | Umetec Gerätebau Gmbh | Wälzkörperaggregat |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19707119C1 (en) * | 1997-02-22 | 1998-08-13 | Zahnradfabrik Friedrichshafen | High pressure pump |
DE10027990A1 (en) * | 2000-06-08 | 2001-12-20 | Luk Fahrzeug Hydraulik | Vane or roller pump has intermediate hydraulic capacity which can be pressurized via connection to pressure connection |
EP1577556A2 (en) | 2004-03-18 | 2005-09-21 | DaimlerChrysler AG | Vane pump |
DE102006033337A1 (en) * | 2006-07-19 | 2008-01-24 | Zf Lenksysteme Gmbh | Displacement pump used as a vane pump comprises a compression chamber with outlet openings and a valve for opening and closing the outlet openings |
-
2007
- 2007-12-18 DE DE200710060883 patent/DE102007060883A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19707119C1 (en) * | 1997-02-22 | 1998-08-13 | Zahnradfabrik Friedrichshafen | High pressure pump |
DE10027990A1 (en) * | 2000-06-08 | 2001-12-20 | Luk Fahrzeug Hydraulik | Vane or roller pump has intermediate hydraulic capacity which can be pressurized via connection to pressure connection |
EP1577556A2 (en) | 2004-03-18 | 2005-09-21 | DaimlerChrysler AG | Vane pump |
DE102006033337A1 (en) * | 2006-07-19 | 2008-01-24 | Zf Lenksysteme Gmbh | Displacement pump used as a vane pump comprises a compression chamber with outlet openings and a valve for opening and closing the outlet openings |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2568180A1 (en) * | 2011-09-12 | 2013-03-13 | Pierburg Pump Technology GmbH | Vane pump |
DE102015100451A1 (en) | 2014-05-04 | 2015-11-05 | Umetec Gerätebau Gmbh | Wälzkörperaggregat |
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Legal Events
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R012 | Request for examination validly filed | ||
R012 | Request for examination validly filed |
Effective date: 20141203 |
|
R016 | Response to examination communication | ||
R082 | Change of representative |
Representative=s name: WINTER, BRANDL, FUERNISS, HUEBNER, ROESS, KAIS, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |