Electro-dynamic machine with coolant chargeable bladder

• US 9,006,943 B2
• Filed: 09/12/2012
• Issued: 04/14/2015
• Est. Priority Date: 09/12/2012
• Status: Active Grant

• Current Assignee: BorgWarner Incorporated
• Original Assignee: Remy Technologies LLC (BorgWarner Incorporated)
• Inventors: Chamberlin, Bradley D., Hamer, Colin
• Primary Examiner(s): Mok, Alex W
• Application Number:
  US13/611,583
• Publication Number:
  US 20140070636A1
• Time in Patent Office: 944 Days
• Field of Search: 310/54, 310/52, 310/58, 310/53
• US Class Current: 310/54
• CPC Class Codes: H02K 2205/12 Machines characterised by means for reducing windage losses or windage noise
• CPC Class Codes: H02K 3/24 with channels or ducts for cooling medium between the conductors
• CPC Class Codes: H02K 5/203 specially adapted for liquids, e.g. cooling jackets

Abstract

An electro-dynamic machine is provided and includes stator assembly end turns and a coolant chargeable bladder disposable to contact the end turns.

Claims

1. An electro-dynamic machine, comprising:

stator assembly end turns; and

a coolant chargeable bladder disposable to contact the end turns and receptive of coolant, which is pressurizable to increase contact between the bladder and the end turns as a quantity of coolant in the bladder increases.

2. The electro-dynamic machine according to claim 1, wherein the bladder is formed of compliant, deformable and/or flexible materials.

3. The electro-dynamic machine according to claim 1, further comprising a housing to house the stator assembly with the bladder interposable between the housing and the stator assembly.

4. The electro-dynamic machine according to claim 3, further comprising a cooling jacket disposable to support the bladder.

5. The electro-dynamic machine according to claim 1, wherein the end turns have a V-shaped configuration.

6. The electro-dynamic machine according to claim 1, further comprising a closed plumbing system, which is configured to be coupled to the bladder and to charge the bladder with non-circulating coolant.

7. The electro-dynamic machine according to claim 1, further comprising an open plumbing system, which is configured to be coupled to the bladder and to charge the bladder with circulating fluid.

8. The electro-dynamic machine according to claim 1, wherein the bladder is perforated.

9. The electro-dynamic machine according to claim 1, wherein the bladder is formed of substantially rigid materials.

10. An electro-dynamic machine, comprising:

a stator assembly having end turns configured to carry current in association with rotation of a rotor;

a bladder element including a bladder wall, which is receptive of coolant and which is disposable to contact the end turns such that the coolant is disposable to remove heat from the end turns into the bladder wall and from the bladder wall into the coolant such that no heat flows directly from the end turns into coolant charging the bladder wall; and

a plumbing system configured to pressurize the coolant.

11. The electro-dynamic machine according to claim 10, wherein the bladder wall is formed of compliant, deformable and/or flexible materials whereby the pressurized coolant increases a contact area between the bladder wall and the end turns.

12. The electro-dynamic machine according to claim 10, further comprising a housing to house the stator assembly with the bladder element interposable between the housing and the stator assembly.

13. The electro-dynamic machine according to claim 12, further comprising a cooling jacket disposable within the housing to support the bladder element.

14. The electro-dynamic machine according to claim 10, wherein the end turns have a V-shaped configuration.

15. The electro-dynamic machine according to claim 10, wherein the plumbing system is closed and configured to charge the bladder with non-circulating coolant.

16. The electro-dynamic machine according to claim 10, wherein the plumbing system is open and configured to charge the bladder with circulating fluid.

17. The electro-dynamic machine according to claim 10, wherein the bladder wall is perforated.

18. The electro-dynamic machine according to claim 10, wherein the bladder wall is formed of substantially rigid materials.

19. A method of operating an electro-dynamic machine, comprising:

forming a stator assembly having end turns configured to carry current in association with rotor rotation;

disposing a coolant receptive bladder to contact the end turns such that coolant receivable by the bladder is disposable to remove heat from the end turns into the bladder wall and from the bladder wall into the coolant such that no heat flows directly from the end turns into coolant charging the bladder wall; and

pressurizing the coolant receivable by the bladder.

20. The method according to claim 19, further comprising charging the bladder with one of non-circulating coolant or circulating coolant.