Compressor assembly for a compressed-air feed of a compressed-air supply system

Patent metadata

Field	Value
Publication number	US-10851894-B2
Application number	US-201816497458-A
Country	US
Kind code	B2
Filing date	Mar 23, 2018
Priority date	Apr 28, 2017
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A compressor assembly for a compressed-air feed of a compressed-air supply system for operating a pneumatic system includes a compressor having a con-rod, a con-rod bearing, and a cylinder. The con-rod has a compressor piston. The compressor assembly further includes a drive having a drive shaft and a drive housing. The drive shaft is mounted in a drive bearing that is disposed within the drive housing. The drive bearing and the con-rod bearing partially or completely overlap one another in the axial direction, or the axial central plane of the drive bearing and the axial central plane of the con-rod bearing lie in one bearing plane. A crank disk is fixedly connected to an end portion of the drive shaft, the crank disk having a con-rod receptacle portion that is disposed so as to be eccentric to the drive shaft, the crank disk being rotatably connected to the con-rod.

First claim

The invention claimed is:

1. A compressor assembly for a compressed-air feed of a compressed-air supply system for operating a pneumatic system, the compressor assembly comprising:
a compressor having a con-rod, a con-rod bearing, and a cylinder, wherein the con-rod has a compressor piston; and
a drive assembly a drive shaft and a drive housing, wherein the drive shaft is mounted in a drive bearing that is disposed within the drive housing,
wherein the drive bearing and the con-rod bearing partially or completely overlap one another in an axial direction of the drive shaft,
wherein the con-rod extends, from the con-rod bearing to the compressor piston, in an axial central plane of the con-rod bearing,
wherein a crank disk is fixedly connected to an end portion of the drive shaft, the crank disk having a con-rod receptacle portion that is disposed so as to be eccentric to the drive shaft, the crank disk being rotatably connected to the con-rod by way of the con-rod bearing, and
wherein a flange region for receiving the drive bearing is formed as part of a drive housing cover that is configured on the drive housing.

2. The compressor assembly as claimed in claim 1 , wherein the crank disk, the drive bearing, and the con-rod bearing are disposed in such a manner that the drive bearing in the radial direction is at least partially situated within the con-rod bearing.

3. The compressor assembly as claimed in claim 1 , the drive assembly further having a motor, wherein the drive housing comprises the motor, and at a con-rod side is covered by a drive housing cover, wherein the drive housing cover at the con-rod side tapers toward the flange region.

4. The compressor assembly as claimed in claim 1 , wherein the drive bearing is fastened within the flange region.

5. The compressor assembly as claimed in claim 1 , wherein the flange region is configured to internally receive the drive bearing and protrudes into the crank disk.

6. The compressor assembly as claimed in claim 1 , wherein the crank disk encompasses the flange region by way of a pot-type recess of the crank disk that lies on the internal side of a con-rod receptacle portion and is open toward a drive housing cover of the drive housing.

7. The compressor assembly as claimed in claim 6 , wherein the pot-type recess of the crank disk lies on an external side of the flange region and an internal side of the pot-type recess being radially opposite one another and/or guiding one another.

8. The compressor assembly as claimed in claim 1 , wherein the crank disk is fixedly connected in a force-fitting manner by way of a conical seat of the crank disk on the end portion, and/or the crank disk fixedly sits on the end portion of the drive shaft by way of a press-fit.

9. The compressor assembly as claimed in claim 1 , wherein the drive shaft is further mounted on a drive housing base by a motor-side drive shaft bearing.

10. The compressor assembly as claimed in claim 1 , wherein a con-rod balancing weight is disposed on the con-rod.

11. The compressor assembly as claimed in claim 1 , wherein the con-rod has a con-rod ring and a piston rod, wherein a con-rod balancing weight is disposed on the con-rod ring in such a manner that a center of gravity of a sub-system that includes the con-rod, the con-rod bearing, and the compressor piston is situated on the rotation axis of the con-rod bearing.

12. The compressor assembly as claimed in claim 1 , wherein a crank-disk balancing weight with the crank disk is fixedly disposed so as to be rotatable on the crank disk in such a manner that, when the compressor piston is at an upper position of the stroke travel of the compressor piston, the crank-disk balancing weight is situated on a side of the crank disk that faces away from the compressor piston.

13. The compressor assembly as claimed in claim 1 , wherein a crank-disk balancing weight is disposed on the crank disk in such a manner that a center of gravity of a mass system, by the disposal of the crank-disk balancing weight, is situated in the rotation axis of the drive shaft, wherein the mass system includes substantially the sub-system composed of the con-rod, the con-rod bearing, and the compressor piston, as well as the crank disk.

14. The compressor assembly as claimed in claim 1 , wherein the con-rod and the compressor piston are rigidly connected to one another.

15. The compressor assembly as claimed in claim 1 , wherein the compressor is configured as a single-stage compressor or as a multi-stage compressor, and/or the compressor has exactly one con-rod or a plurality of con-rods.

16. The compressor assembly as claimed in claim 1 , wherein the con-rod bearing is a roller bearing, and/or the drive bearing is a friction bearing or needle bearing.

17. The compressor assembly as claimed in claim 1 , wherein a con-rod ring on a side of the crank disk and/or on a side of the con-rod bearing toward the drive housing cover, is by a flange shaped run on protection, delimited in an axial movement direction.

18. The compressor assembly as claimed in claim 1 , wherein an axial delimitation protection is formed by at least one annular disk.

19. The compressor assembly as claimed in claim 1 , wherein an axial delimitation protection is formed by a crank-flange portion and/or by an annular flange.

20. A compressed-air supply system for operating a pneumatic system, comprising:
a compressor assembly as claimed in claim 1 ;
an air dryer; and
a valve assembly.

21. A vehicle, comprising:
a compressor assembly as claimed in claim 1 , and
a pneumatic system.

22. A compressor assembly for a compressed-air feed of a compressed-air supply system for operating a pneumatic system, the compressor assembly comprising:
a compressor having a con-rod, a con-rod bearing, and a cylinder, wherein the con-rod has a compressor piston; and
a drive having a drive shaft and a drive housing, wherein the drive shaft is mounted in a drive bearing that is disposed within the drive housing,
wherein the drive bearing and the con-rod bearing partially or completely overlap one another in an axial direction of the drive shaft, or an axial central plane of the drive bearing and an axial central plane of the con-rod bearing lie in one bearing plane,
wherein a crank disk is fixedly connected to an end portion of the drive shaft, the crank disk having a con-rod receptacle portion that is disposed so as to be eccentric to the drive shaft, the crank disk being rotatably connected to the con-rod by way of the con-rod bearing,
wherein the crank disk encompasses a flange region by way of a pot-type recess of the crank disk that lies on an internal side of a con-rod receptacle portion and is open toward a drive housing cover of the drive housing, and
wherein the pot-type recess of the crank disk lies on an external side of the flange region and an internal side of the pot-type recess being radially opposite one another and/or guiding one another.

Assignees

• Wabco Gmbh

Inventors

• Bredbeck Klaus
• Stabenow Uwe

Classifications

• F04B39/121

  Casings · CPC title

• F04B35/04 Primary

  the means being electric · CPC title

• F04B35/01

  the means being mechanical · CPC title

• F04B39/0005

  adaptations of pistons · CPC title

• F16J1/14 Primary

  with connecting-rods, i.e. pivotal connections · CPC title