Pendulum slide pump with at least one communication channel

Patent metadata

Field	Value
Publication number	US-9752573-B2
Application number	US-201414570593-A
Country	US
Kind code	B2
Filing date	Dec 15, 2014
Priority date	Dec 16, 2013
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A pendulum slider pump may include an inner rotor connected via a plurality of pendulums to an outer rotor. The pendulums may be mounted on the outer rotor in an articulated manner, and the pendulums may respectively include a pendulum foot guiding in an associated radial groove arranged in the inner rotor. The radial grooves may each include a groove base and two circumferentially spaced groove walls. The outer rotor, the inner rotor and two pendulums adjacent in a circumferential direction may each delimit a chamber. Each pendulum foot together with the associated groove walls and the groove base may delimit a pendulum foot space. At least one pendulum foot space may be connected to the associated chamber via at least one communication channel. The at least one communication channel may open into the pendulum foot space in a region of the groove base.

First claim

The invention claimed is:

1. A pendulum slider pump, comprising:
an inner rotor having a rotation axis connected via a plurality of pendulums to an outer rotor;
the inner rotor including a plurality of radial grooves configured to receive the plurality of pendulums, the plurality of radial grooves each including a groove base and at least two circumferentially spaced groove walls;
the plurality of pendulums mounted on the outer rotor in an articulated manner, the plurality of pendulums respectively including a pendulum foot guided in a corresponding one of the plurality of radial groove;
a plurality of chambers each defined by the outer rotor, the inner rotor and two pendulums adjacent in a circumferential direction of the rotation axis;
a plurality of pendulum foot spaces defined in the plurality of radial grooves, wherein each of the plurality of pendulum foot spaces is delimited by the pendulum foot of the plurality of pendulums together with the at least two groove walls and the groove base of the plurality of radial grooves; and
at least one communication channel provided for each of the plurality of pendulum foot spaces, wherein each communication channel is arranged in the inner rotor to fluidly connect an associated pendulum foot space of the plurality of pendulum foot spaces to a respective chamber of the plurality of chambers, and wherein each communication channel is structured at one end to open into the respective chamber and at another end to open into the associated pendulum foot space in a region of the groove base of each of the plurality of radial grooves.

2. The pendulum slider pump according to claim 1 , wherein the at least one communication channel provided for at least one of the plurality of pendulum foot spaces is arranged with respect to a direction of rotation in front of the associated pendulum or after the associated pendulum.

3. The pendulum slider pump according to claim 1 , wherein at least one of the plurality of pendulum foot spaces includes at least two communication channels arranged on opposite sides of an associated pendulum with respect to a direction of rotation, and wherein at least one of the at least two communication channels is arranged in front of the associated pendulum with respect to the direction of rotation and connected to one of the plurality of chambers, and at least one other of the at least two communication channels is arranged after the associated pendulum with respect to the direction of rotation and connected to another of the plurality of chambers.

4. The pendulum slider pump according to claim 1 , wherein the at least one communication channel provided for at least one of the plurality of pendulum foot spaces includes at least one of a groove defined on a face end of the inner rotor and a bore.

5. The pendulum slider pump according to claim 1 , wherein the at least one communication channel provided for at least one of the plurality of pendulum foot spaces is formed via at least one of a primary forming process and eroding.

6. The pendulum slider pump according to claim 1 , wherein the at least one communication channel of the associated pendulum foot space for each of the plurality of pendulum foot spaces is fluidly separated from the at least one communication channel of each circumferentially adjacent pendulum foot space with respect to the rotation axis.

7. The pendulum slider pump according to claim 1 , wherein each communication channel extends radially between the associated pendulum foot space and the corresponding chamber at least one of linearly and curved.

8. The pendulum slider pump according to claim 1 , wherein the pendulum slider pump is an oil pump.

9. A motor vehicle, comprising:
at least one pendulum slider pump for supplying a fluid to at least one of an internal combustion engine and a transmission, the at least one pendulum slider pump including:
an inner rotor having a rotation axis connected to an outer rotor via a plurality of circumferentially spaced pendulums;
a plurality of radial grooves disposed on the inner rotor configured to receive the plurality of pendulums, the plurality of radial grooves each including at least two circumferentially spaced groove walls and a groove base disposed between the at least two groove walls;
the plurality of pendulums respectively including a pendulum head mounted on the outer rotor and a pendulum foot arranged in a corresponding one of the plurality of radial grooves;
a plurality of chambers each defined by the inner rotor, the outer rotor and two circumferentially adjacent pendulums;
a pendulum foot space associated with each of the plurality of radial grooves, wherein each pendulum foot space is delimited by each pendulum foot of the plurality of pendulums together with the at least two groove walls and the groove base of each of the plurality of radial grooves;
a plurality of communication channels disposed on the inner rotor, the plurality of communication channels including at least two communication channels provided for the pendulum foot space of at least one associated radial groove of the plurality of radial grooves, wherein the at least two communication channels are disposed on circumferentially opposite sides of the at least one associated radial groove with respect to the rotation axis, and the at least two communication channels are each arranged to fluidly connect the pendulum foot space of the at least one associated radial groove to a respective one of the plurality of chambers; and
wherein at least one of the at least two communication channels extends radially from at least one of the at least two groove walls of the at least one associated radial groove to a respective chamber of the plurality of chambers and at least one other of the at least two communication channels extends radially from at least one other of the at least two groove walls of the at least one associated radial groove to another respective chamber of the plurality of chambers, and wherein the at least two communication channels respectively open into the pendulum foot space of the at least one associated radial groove at the groove base.

10. The motor vehicle according to claim 9 , wherein the plurality of communication channels further includes at least one communication channel provided for the pendulum foot space of each associated one of the plurality of radial grooves, and wherein each pendulum foot space is fluidly connected to a corresponding one of the plurality of chambers via the at least one communication channel.

11. The motor vehicle according to claim 10 , wherein the at least one communication channel provided for the pendulum foot space of each associated one of the plurality of radial grooves is fluidly separated from the at least one communication channel of each circumferentially adjacent pendulum foot space with respect to the rotation axis.

12. The motor vehicle according to claim 9 , wherein the at least two communication channels connect the pendulum foot space of the at least one associated radial groove to circumferentially adjacent chambers with respect to the rotation axis separated from one another via a corresponding one of the plurality of pendulums.

13. The motor vehicle according to claim 9 , wherein the at least one of the at least two communication channels is arranged in front of the associated pendulum with respect to a direction of rotation and the at least one other of the at least two communication channels is arranged after the associated pendulum with respect to the direction of rotation.

14. The motor vehicle according to claim 9 , wherein the plurality of communication channels furthe

Assignees

• Mahle Int Gmbh

Inventors

• Hoehn Dieter
• Richter Christian
• Sahr Michael
• Tepler Mark

Classifications

• F01C1/332

  with vanes hinged to the outer member and reciprocating with respect to the inner member · CPC title

• F04C2230/21

  by casting · CPC title

• F04C2230/102

  by spark erosion methods · CPC title

• F01C1/336

  and hinged to the inner member · CPC title

• F04C2230/22

  by sintering · CPC title