ELECTRICAL MACHINE

• US 20130002064A1
• Filed: 06/29/2011
• Published: 01/03/2013
• Est. Priority Date: 06/29/2011
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: De Bock, Hendrik Pieter Jacobus, Alexander, James Pellegrino, EL-Refaie, Ayman Mohamed Fawzi, Gerstler, William Dwight, Shah, Manoj Ramprasad, Shen, Xiaochun
• Granted Patent: US 9,373,984 B2
• Time in Patent Office: Days
• US Class Current: 310/54
• CPC Class Codes: H02K 1/32 with channels or ducts for flow of cooling medium
• CPC Class Codes: H02K 5/203 specially adapted for liquids, e.g. cooling jackets
• CPC Class Codes: H02K 9/197 in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator

Abstract

An apparatus, such as an electrical machine, is provided. The apparatus can include a rotor defining a rotor bore and a conduit disposed in and extending axially along the rotor bore. The conduit can have an annular conduit body defining a plurality of orifices disposed axially along the conduit and extending through the conduit body. The rotor can have an inner wall that at least partially defines the rotor bore. The orifices can extend through the conduit body along respective orifice directions, and the rotor and conduit can be configured to provide a line of sight along the orifice direction from the respective orifices to the inner wall.

Claims

1. An apparatus comprising:

a rotor defining a rotor bore; and

a conduit disposed in and extending axially along the rotor bore, said conduit having an annular conduit body defining a plurality of orifices disposed axially along said conduit and extending through said conduit body.

2. The apparatus of claim 1, wherein said conduit includes an inlet portion that is configured to receive fluid and to direct the fluid into said conduit.

3. The apparatus of claim 1, wherein at least one of the orifices extends radially through said conduit body.

4. The apparatus of claim 1, wherein the orifice extends in a direction with a component transverse to an axial direction of said rotor.

5. The apparatus of claim 1, wherein the orifices are disposed circumferentially around said conduit body.

6. The apparatus of claim 1, wherein at least two of the orifices extend along respectively different directions through said conduit body.

7. The apparatus of claim 1, wherein at least two of the orifices have respectively different opening areas.

8. The apparatus of claim 1, wherein said conduit body defines at least one orifice so as to be configured as a spray nozzle.

9. The apparatus of claim 1, wherein the orifices extend through said conduit body along respective orifice directions, and wherein said rotor has an inner wall that at least partially defines the rotor bore, and wherein said rotor and conduit are configured to provide a line of sight along the orifice direction from the respective orifices to said inner wall.

10. The apparatus of claim 1, wherein said rotor is configured to rotate relative to said conduit.

11. The apparatus of claim 1, further comprising a spray nozzle disposed over at least one of the orifices.

12. The apparatus of claim 11, wherein said spray nozzle is configured to atomize liquid being forced therethrough.

13. An apparatus comprising:

a stator;

a rotor disposed concentrically with said stator and defining a rotor bore; and

a conduit disposed in and extending axially along the rotor bore, said conduit having an annular conduit body defining a plurality of orifices disposed axially along said conduit and extending through said conduit body.

14. The apparatus of claim 13, wherein at least one of the orifices extends radially through said conduit body.

15. The apparatus of claim 13, wherein the orifice extends in a direction with a component transverse to an axial direction of said rotor.

16. The apparatus of claim 13, wherein the orifices are disposed circumferentially around said conduit body.

17. The apparatus of claim 13, wherein at least two of the orifices extend along respectively different directions through said conduit body.

18. The apparatus of claim 13, wherein at least two of the orifices have respectively different opening areas.

19. The apparatus of claim 13, wherein the orifices extend through said conduit body along respective orifice directions, and wherein said rotor has an inner wall that at least partially defines the rotor bore, and wherein said rotor and conduit are configured to provide a line of sight along the orifice direction from at least one of the respective orifices to said inner wall.

20. The apparatus of claim 13, further comprising a coolant fluid that moves along said conduit in a first axial direction and along an inner wall of said rotor in a second axial direction opposing the first axial direction.