Vibration damper for generator or motor stator

• US 7,550,881 B1
• Filed: 01/17/2006
• Issued: 06/23/2009
• Est. Priority Date: 01/17/2006
• Status: Expired due to Fees

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Dietrich, Robert A., Eccles, Steven R., Shiao, Sam
• Primary Examiner(s): Leung; Quyen P
• Assistant Examiner(s): Kim; John K
• Application Number:
  US11/334,254
• Time in Patent Office: 1,253 Days
• Field of Search: 310/51, 310/270, 310/154.12, 310/156.12, 310/91, 310/89, 310/42, 310/87, 310/88
• US Class Current: 310/51
• CPC Class Codes: H02K 1/187 to inner stators
• CPC Class Codes: H02K 5/24 specially adapted for suppression or reduction of noise or vibrations

Abstract

A vibration damping sleeve for a stator assembly having radial vibration isolator features at both ends is provided. At one end, the vibration damping sleeve comprises a groove for a damping element such as an annular gasket while a plurality of beams circumferentially disposed are at the other end. The plurality of beams may comprise mounting flanges for mounting the stator to a housing support.

Claims

1. A vibration damping sleeve for a stator, the vibration damping sleeve comprising:

an open body with a first end and a second end and wherein the stator is disposed axially within the open body;

a groove disposed circumferentially at the first end of the body;

a plurality of beams extending axially and disposed circumferentially at the second end of the body; and

a plurality of open slots juxtaposed between the plurality of beams;

wherein said plurality of beams further comprises;

a mounting flange extending radially at a terminal surface at each of the plurality of beams; and

a plurality of bolt holes extending axially at each of the plurality of mounting flanges.

2. The vibration damping sleeve of claim 1 further comprising a damping element in the groove.

3. The vibration damping sleeve of claim 2 wherein the damping element comprises an annular gasket.

4. The vibration damping sleeve of claim 3 wherein the annular gasket is a closed gasket.

5. The vibration damping sleeve of claim 4 wherein the annular gasket is an O-ring.

6. The vibration damping sleeve of claim 5 wherein the O-ring comprises rubber or nylon.

7. The vibration damping sleeve of claim 5 wherein the O-ring further comprises a spring embodied within.

8. The vibration damping sleeve of claim 2 wherein the damping element is a piece of U-shaped metal having an elastomer coating.

9. The vibration damping sleeve of claim 1 wherein at least one of the plurality of beams comprises a mounting flange.

10. The vibration damping sleeve of claim 9 wherein the vibration damping sleeve is attached to a housing through the mounting flange and wherein the vibration damping sleeve is disposed between the stator and the housing.

11. A vibration damping sleeve for a stator wherein the vibration damping sleeve is disposed between the stator and a housing, the vibration damping sleeve comprising:

an open body with a first end and a second end and wherein the stator is disposed axially within the open body;

a groove disposed circumferentially at the first end of the body;

a damping element disposed in the groove; and

a plurality of beams extending axially and disposed circumferentially at the second end of the open body, wherein at least one of the plurality of beams comprises a mounting flange and extends beyond the stator.

12. The vibration damping sleeve of claim 11 wherein the damping element is a closed annular gasket.

13. The vibration damping sleeve of claim 11 wherein the damping element is an O-ring or a piece of U-shaped metal.

14. The vibration damping sleeve of claim 11 wherein the vibration damping sleeve is attached to the housing through the mounting flange.

15. The vibration damping sleeve of claim 11 wherein each of the plurality of beams comprises a mounting flange.

16. The vibration damping sleeve of claim 11 wherein the vibration damping sleeve is part of a generator or motor.

17. The vibration damping sleeve of claim 11 wherein the stator is shrink-fit into the vibration damping sleeve.

18. A stator assembly comprising:

a stator;

a vibration damping sleeve comprising an open body with a first end and a second end, the stator being disposed axially within the open body and wherein the vibration damping sleeve further comprises a groove disposed circumferentially at the first end of the body, a damping element disposed in the groove and a plurality of beams extending axially and disposed circumferentially at the second end of the open body, wherein at least one of the plurality of beams comprises a mounting flange;

wherein the number of the plurality of beams is determined based on a load requirement of the stator assembly; and

a housing, wherein the vibration damping sleeve is disposed between the stator and the housing and wherein the stator is secured to the housing through the mounting flange on at least one of the plurality of beams of the vibration damping sleeve.

19. The stator assembly of claim 18 wherein the damping element is an O-ring or a piece of U-shaped metal.

20. The stator assembly of claim 18 wherein the stator assembly is part of a generator.