Bearing power generating configuration

Patent metadata

Field	Value
Publication number	US-9664234-B2
Application number	US-201314395155-A
Country	US
Kind code	B2
Filing date	Apr 9, 2013
Priority date	Apr 24, 2012
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A power generating bearing assembly comprising a power generating subassembly integrated into a bearing. The power generating subassembly utilizes the relative motion between a bearing inner ring and a bearing outer ring of the bearing to generate electrical power. A sealing system is attached to one of the bearings. The power generating subassembly includes an electrical generator in operational engagement with a magnetically polarized material. The electrical generator is attached to the non-sealing carrying bearing. The magnetically polarized material is integrated into a supported member, which is a unitary section of the seal that extends axially from an end surface of the bearing rings. The relative motion between the rings engages the electrical generator and the magnetically polarized material causing a generator core of the electrical generator to create an electrical current.

First claim

What is claimed is:

1. A power generating bearing assembly, the power generating bearing assembly comprising:
a bearing comprising:
a bearing outer ring having an outer surface, a bearing engaging inner surface, and an outer ring end surface,
a bearing inner ring having a bearing assembly interior mating surface, a bearing outer race engaging surface, and an inner ring end surface, wherein said bearing engaging outer surface is sized to rotationally engage with said outer ring bearing engaging inner surface,
a sealing system provided between said bearing outer ring and said bearing inner ring, wherein said sealing system is secured to a sealing attachment ring, wherein said sealing attachment ring is one of said bearing outer ring and said bearing inner ring and said remaining ring is a respective rotational ring, said sealing ring comprising a sealing section adapted to seal against the other of said bearing outer ring and said bearing inner ring, said sealing system comprising a magnetically polarized material supporting member carrying a magnetically polarized material, said magnetically polarized material supporting member provided as a unitary, cantilevered section of said sealing system, said cantilevered magnetically polarized material supporting member extending axially beyond said ring end surfaces, positioning the magnetically polarized material externally and axially beyond the outer ring end surface and the inner ring end surface,
wherein said inner ring is rotatationally assembled within said outer ring bearing engaging inner surface; and

an electrical power generator including a generator core comprising an electrical coil wound about a magnetic core to generate electrical power, said electrical power generator being attached to said respective rotational ring directing said generator core in a radial direction to operationally engage with said magnetically polarized material;
wherein a relative motion between said bearing outer ring and said bearing inner ring passes said magnetically polarized material across said generator core causing said generator core to create an electrical current.

2. A power generating bearing assembly as recited in claim 1 , said sealing system further comprising a sealing section inserted between said bearing outer ring and said bearing inner ring.

3. A power generating bearing assembly as recited in claim 2 , said sealing section further comprising a sealing feature, said sealing feature rides against said bearing outer race engaging surface of said respective rotational ring.

4. A power generating bearing assembly as recited in claim 3 , said sealing feature retains said magnetically polarized material in a spatial relation with said electrical power generator, retaining an air gap therebetween.

5. A power generating bearing assembly as recited in claim 1 , further comprising a circumferential gliding material positioned between said electrical power generator and said magnetically polarized material.

6. A power generating bearing assembly as recited in claim 1 , said magnetically polarized material being provided in a complete circumference.

7. A power generating bearing assembly as recited in claim 1 , said magnetically polarized material being provided in a partial circumference.

8. A power generating bearing assembly as recited in claim 1 , said magnetically polarized material being provided in a plurality of segments, said plurality of segments being spatially arranged about a circumference.

9. A power generating bearing assembly, the power generating bearing assembly comprising:
a bearing comprising:
a bearing outer ring having an outer surface, a bearing engaging inner surface, and an outer ring end surface,
a bearing inner ring having a bearing assembly interior mating surface, a bearing outer race engaging surface, and an inner ring end surface, wherein said bearing engaging outer surface is sized to rotationally engage with said outer ring bearing engaging inner surface,
a sealing system provided between said bearing outer ring and said bearing inner ring, wherein said sealing system is secured to said bearing outer ring, said sealing system comprising a magnetically polarized material supporting member formed in an annular ring, said sealing ring comprising a sealing section adapted to seal against the other of said bearing outer ring and said bearing inner ring, said magnetically polarized material supporting member carrying a magnetically polarized material, said magnetically polarized material supporting member provided as a unitary, cantilevered section of said sealing system, said cantilevered magnetically polarized material supporting member extending axially beyond said ring end surfaces, positioning the magnetically polarized material externally and axially beyond the outer ring end surface and the inner ring end surface,
wherein said inner ring is rotatationally assembled within said outer ring bearing engaging inner surface; and

an electrical power generator including a generator core comprising an electrical coil wound about a magnetic core to generate electrical power, said electrical power generator being attached to said bearing inner ring directing said generator core in a radial direction to operationally engage with said magnetically polarized material;
wherein a relative motion between said bearing outer ring and said bearing inner ring passes said magnetically polarized material across said generator core causing said generator core to create an electrical current.

10. A power generating bearing assembly as recited in claim 9 , said sealing system further comprising a sealing section inserted between said bearing outer ring and said bearing inner ring.

11. A power generating bearing assembly as recited in claim 10 , said sealing section further comprising a sealing feature, said sealing feature rides against said bearing outer race engaging surface of said respective rotational ring.

12. A power generating bearing assembly as recited in claim 11 , said sealing feature retains said magnetically polarized material in a spatial relation with said electrical power generator, retaining an air gap therebetween.

13. A power generating bearing assembly as recited in claim 9 , further comprising a circumferential gliding material positioned between said electrical power generator and said magnetically polarized material.

14. A power generating bearing assembly as recited in claim 9 , said magnetically polarized material being provided in a complete circumference.

15. A power generating bearing assembly as recited in claim 9 , said magnetically polarized material being provided in a partial circumference.

16. A power generating bearing assembly as recited in claim 9 , said magnetically polarized material being provided in a plurality of segments, said plurality of segments being spatially arranged about a circumference.

17. A power generating bearing assembly as recited in claim 9 , said sealing system is designed to retain said magnetically polarized material in a spatial relation with said electrical power generator using inertial energy during rotation of said bearing outer ring, thus retaining an air gap between said magnetically polarized material and said electrical power generator.

18. A power generating bearing assembly as recited in claim 1 , said magnetically polarized material and said electrical power generator are arranged having opposing surfaces, wherein each of the opposing surfaces of said magnetically polarized material and said electrical power generator are arranged exte

Assignees

• Skf Ab

Inventors

• Bartl Frank
• Erskine Joseph
• Ziegler Sebastian
• Van Der Ham Andreas Clemens

Classifications

• F16C2300/02

  General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned · CPC title

• F16C41/004 Primary

  Electro-dynamic machines, e.g. motors, generators, actuators · CPC title

• H02K7/1869

  Linear generators; sectional generators · CPC title

• F16C33/78

  with a diaphragm, disc, or ring, with or without resilient members {(F16C33/761 takes precedence)} · CPC title

• H02K7/1807

  Rotary generators (H02K7/006 takes precedence) · CPC title