Oscillating slide machine that pumps different fluid mediums at different pressures

Patent metadata

Field	Value
Publication number	US-9394893-B2
Application number	US-201113581316-A
Country	US
Kind code	B2
Filing date	Feb 17, 2011
Priority date	Feb 26, 2010
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A controllable hydraulic oscillating slide machine includes an inner rotor arranged in a housing and having cylindrical recesses. A bearing is formed in the housing, in which a co-rotating outer rotor is mounted eccentrically to the inner rotor, the outer rotor having several pivotably suspended slide drivers that engage into the recesses of the inner rotor for rotationally driving the outer rotor by way of the inner rotor and form modifiable chambers. The slide drivers may each be coupled to a piston that is guided in a respective associated recess. A pressure level different from that in the chambers between the inner and the outer rotor may be set in the chambers delimited by the recesses and the associated pistons so that two different pressure levels may be generated and two different consumers can be supplied using the oscillating slide machine.

First claim

The invention claimed is:

1. A controllable hydraulic oscillating slide machine comprising:
an inner rotor arranged in a housing which comprises a plurality of cylindrical recesses;
a bearing formed in the housing;
an outer rotor positioned between the bearing and the inner rotor, the outer rotor is mounted and co-rotates eccentrically to the inner rotor, and the outer rotor comprises a plurality of pivotably suspended slide drivers, which engage into the plurality of recesses of the inner rotor for rotationally driving the outer rotor by way of the inner rotor;
wherein each one of the plurality of slide drivers is pivotably attached to an associated piston of a plurality of pistons, and wherein each associated piston of the plurality of pistons is in turn guided in a respective one of the plurality of recesses of the inner rotor;
a plurality of first working chambers delimited by the outer rotor, the inner rotor and the slide drivers, and the plurality of first working chambers are a plurality of modifiable chambers configured to modify a volume in a respective one of the modifiable chambers, such that the plurality of first working chambers deliver an exit flow of a first pressure medium at a first pressure level;
a plurality of second working chambers fluidically separated from the plurality of first working chambers and delimited by the plurality of recesses and the plurality of pistons, such that the plurality of second working chambers deliver another exit flow of a second pressure medium at a second pressure level, and wherein the plurality of first working chambers and the plurality of second working chambers, respectively, are configured to at least one of (i) deliver the exit flows at the first pressure level and the second pressure level in which the second pressure level is a different pressure level from the first pressure level and (ii) pump the first pressure medium and the second pressure medium, the second pressure medium being a different level of pressure from the first pressure medium;
wherein each associated piston of each slide driver of the plurality of slide drivers fluidically separates a first working chamber of the plurality of first working chambers from a second working chamber of the plurality of second working chambers.

2. The oscillating slide machine according to claim 1 wherein the bearing is at least one of a pivot bearing and a slide bearing, and at least one of the pivot bearing and the slide bearing is configured to move so as to change the eccentricity between the inner rotor and the outer rotor such that a rate of delivery of the oscillating slide machine is changed.

3. The oscillating slide machine according to claim 2 wherein when the slide bearing is selected the slide bearing is a spherical bearing.

4. The oscillating slide machine according to claim 3 wherein each slide driver of the plurality of slide drivers is attached to an associated piston of the plurality of pistons via a roller-shaped joint head and a fork/pincer-shaped joint mounting.

5. The oscillating slide machine according to claim 1 wherein each slide driver of the plurality of slide drivers is attached to an associated piston of the plurality pistons via a roller-shaped joint head and a fork/pincer-shaped joint mounting.

6. The oscillating slide machine according to claim 1 , wherein each recess of the plurality of recesses has a round cross section normal to the axis of piston oscillation.

7. The oscillating slide machine according to claim 1 , wherein a spring device is provided, which preloads the bearing in a direction.

8. The oscillating slide machine according to claim 1 , wherein the oscillating slide machine is a motor vehicle oil pump.

9. The oscillating slide machine according to claim 1 , wherein the plurality of slide drivers of the oscillating slide machine comprises six slide drivers.

10. The oscillating slide machine according to claim 1 , wherein the volumetric change of the plurality of first working chambers is greater than the volumetric change of the plurality of second working chambers upon a revolution of the inner rotor.

11. The oscillating slide machine according to claim 10 , wherein the plurality of first working chambers is connected to a low-pressure hydraulic circuit.

12. The oscillating slide machine according to claim 10 , wherein each recess of the plurality of recesses is a guide mounting that is a blind bore.

13. The oscillating slide machine according to claim 12 wherein at least one slide driver of the plurality of slide drivers comprises an oscillating piston rod, wherein the piston is guided in the guide mounting and at least partially delimits the second working chamber, wherein the oscillating piston rod is pivotably mounted on the piston and pivotably mounted on the outer rotor.

14. The oscillating slide machine according to claim 10 wherein the first pressure medium for the plurality of first working chambers is drawn in from a first pressure medium reservoir and the second pressure medium for the plurality of second working chambers is drawn in from a second pressure medium reservoir, the first pressure medium reservoir being separate and different from the second pressure medium reservoir.

15. The oscillating slide machine according to claim 10 , wherein the first working chamber is connected to a low-pressure hydraulic circuit, and wherein each recess of the plurality of recesses is a guide mounting that is a blind bore.

16. The oscillating slide machine according to claim 15 wherein at least one slide driver of the plurality of slide drivers comprises an oscillating piston rod, wherein the piston is guided in the guide mounting and at least partially delimits the second working chamber, wherein the oscillating piston rod is pivotably mounted on the piston and pivotably mounted on the outer rotor.

17. The oscillating slide machine according to claim 16 wherein the first pressure medium for the plurality of first working chambers is drawn in from a first pressure medium reservoir and the second pressure medium for the plurality of second working chambers is drawn in from a second pressure medium reservoir, the first pressure medium reservoir being separate and different from the second pressure medium reservoir.

18. The oscillating slide machine according to claim 15 wherein the first pressure medium for the plurality of first working chambers is drawn in from a first pressure medium reservoir and the second pressure medium for the plurality of second working chambers is drawn in from a second pressure medium reservoir, the first pressure medium reservoir being separate and different from the second pressure medium reservoir.

19. The oscillating slide machine according to claim 1 wherein each piston of the plurality of pistons is a round piston having a substantially circular cross section to the axis of piston oscillation.

20. The oscillating slide machine according to claim 1 , wherein each recess of the plurality of recesses is a guide mounting that is a blind bore.

Assignees

• Mäder André
• Richter Christian
• Tepler Mark
• Morthorst Bernd
• Struckmann Jens
• Vöge Wolfgang
• Mahle Int Gmbh

Inventors

• Mäder André
• Richter Christian
• Tepler Mark
• Morthorst Bernd
• Struckmann Jens
• Vöge Wolfgang

Classifications

• F04C2/336

  and hinged to the inner member · CPC title

• F04C11/005

  of dissimilar working principle · CPC title

• F04B23/10 Primary

  at least one pump being of the reciprocating positive-displacement type · CPC title

• F04B23/12

  at least one pump being of the rotary-piston positive-displacement type · CPC title

• F01C21/0809

  Construction of vanes or vane holders · CPC title