Current carrying systems and methods of assembling the same

Patent metadata

Field	Value
Publication number	US-10027076-B2
Application number	US-201615235222-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Feb 25, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A current carrying system for use in transporting electrical current between a plurality of electrical devices is provided. The current carrying system includes a busbar having a first axial end, a second axial end, an electrically conductive shaft extending from the first axial end to the second axial end, and at least one cooling feature defined in at least a portion of the electrically conductive shaft. The current carrying system also includes a casing that defines a busbar channel configured to receive the busbar such that the casing at least partially circumscribes the busbar. The current carrying system also includes an air vent defined by the at least one cooling feature and the casing, wherein the air vent is in flow communication with ambient air, and the cooling feature is configured to facilitate a flow of air from the ambient air through the air vent.

First claim

What is claimed is:

1. A current carrying system for use in transporting electrical current between a plurality of electrical devices, said current carrying system comprising:
a busbar comprising a first axial end, a second axial end, an electrically conductive shaft extending from the first axial end to the second axial end, and at least one cooling feature defined in at least a portion of said electrically conductive shaft;
a casing that defines a busbar channel configured to receive said busbar such that said casing at least partially circumscribes said busbar; and
an air vent defined by said at least one cooling feature and said casing, said air vent comprising an apex opening proximate said first axial end and a base opening proximate said second axial end, wherein said air vent is in flow communication with ambient air, and wherein said at least one cooling feature is configured to facilitate a flow of the ambient air through said air vent.

2. The current carrying system of claim 1 , wherein said at least one cooling feature is at least one of a notch, a cut-out, a void space, and a groove.

3. The current carrying system of claim 1 , wherein said casing comprises a first barrier and a second barrier coupled to said first barrier, and wherein said first barrier is coupled to at least a portion of said busbar.

4. The current carrying system of claim 3 , wherein said first barrier comprises a plurality of alternating recesses and projections, said projections configured to be coupled to said second barrier, and said recesses configured to define said busbar channel.

5. The current carrying system of claim 1 , wherein said casing comprises an air passage that extends from the ambient air to said air vent, said air passage configured to entrain air from the ambient environment into said air vent.

6. The current carrying system of claim 1 , wherein said busbar has a cross-sectional profile including a top region, a bottom region, and a substantially solid rectangular central region extending therebetween.

7. A current carrying system for use in transporting electrical current between a plurality of electrical devices, said current carrying system comprising:
a busbar comprising a first axial end, a second axial end, an electrically conductive shaft extending from the first axial end to the second axial end, and at least one cooling feature defined in at least a portion of said electrically conductive shaft;
a casing comprising a first barrier and a second barrier coupled to said first barrier, said first barrier comprising a plurality of alternating recesses and projections, said projections configured to be coupled to said second barrier, said recesses configured to define a busbar channel configured to receive said busbar such that said casing at least partially circumscribes said busbar, wherein said first barrier is coupled to at least a portion of said busbar; and
an air vent defined by said at least one cooling feature and said casing, wherein said air vent is in flow communication with ambient air, and wherein said at least one cooling feature is configured to facilitate a flow of the ambient air through said air vent.

8. The current carrying system of claim 7 , wherein said at least one cooling feature is at least one of a notch, a cut-out, a void space, and a groove.

9. The current carrying system of claim 7 , wherein said air vent comprises an apex opening proximate said first axial end and a base opening proximate said second axial end.

10. The current carrying system of claim 7 , wherein said casing comprises an air passage that extends from the ambient air to said air vent, said air passage configured to entrain air from the ambient environment into said air vent.

11. The current carrying system of claim 10 , wherein said air passage has an inner opening and an outer opening axially spaced from said inner opening.

12. The current carrying system of claim 11 , wherein said inner opening is positioned vertically above said outer opening to enable a velocity component of the air in said air passage to be in the same direction as the air in said air vent.

13. A current carrying system for use in transporting electrical current between a plurality of electrical devices, said current carrying system comprising:
a busbar comprising a first axial end, a second axial end, an electrically conductive shaft extending from the first axial end to the second axial end, and at least one cooling feature defined in at least a portion of said electrically conductive shaft, said busbar further comprising a cross-sectional profile including a top region, a bottom region, and a substantially solid rectangular central region extending therebetween, said top region comprising a pair of fins that extend away from said central region in a curved manner and define said at least one cooling feature therebetween;
a casing that defines a busbar channel configured to receive said busbar such that said casing at least partially circumscribes said busbar; and
an air vent defined by said at least one cooling feature and said casing, wherein said air vent is in flow communication with ambient air, and wherein said at least one cooling feature is configured to facilitate a flow of the ambient air through said air vent.

14. The current carrying system of claim 13 , wherein said at least one cooling feature is at least one of a notch, a cut-out, a void space, and a groove.

15. The current carrying system of claim 13 , wherein said air vent comprises an apex opening proximate said first axial end and a base opening proximate said second axial end.

16. The current carrying system of claim 13 , wherein said casing comprises a first barrier and a second barrier coupled to said first barrier, and wherein said first barrier is coupled to at least a portion of said busbar.

17. The current carrying system of claim 13 , wherein said casing comprises an air passage that extends from the ambient air to said air vent, said air passage configured to entrain air from the ambient environment into said air vent.

18. A busbar for use in transporting electrical current between a plurality of electrical devices, said busbar comprising:
a first axial end, a second axial end, and an electrically conductive shaft extending from said first axial end to said second axial end, said electrically conductive shaft comprising a cross-sectional profile comprising a top region, a bottom region, and a substantially solid rectangular central region extending therebetween, wherein said electrically conductive shaft is at least partially circumscribed by a casing; and
at least one cooling feature defined in at least a portion of said electrically conductive shaft, said top region of said electrically conductive shaft comprising a pair of fins that extend away from said central region in a curved manner and define said at least one cooling feature therebetween, said at least one cooling feature and the casing defining an air vent in flow communication with ambient air, said at least one cooling feature configured to facilitate a flow of the ambient air through said air vent.

19. The busbar of claim 18 , wherein said at least one cooling feature is at least one of a notch, a cut-out, a void space, and a groove.

20. The busbar of claim 18 , wherein the casing has an air passage that extends from the ambient air to said air vent, said air passage configured to entrain air from the ambient environment through said at least one cooling feature.

Assignees

• Gen Electric

Inventors

• Greenwood Peter James
• Bryant Michael Ray
• Mathure Shyam Ramlal
• Polineni Venkateswara Rao
• Bhattacharya Anandaroop
• Dasgupta Subhashish
• Murthy Sunil Srinivasa

Classifications

• H02B1/21

  Bus-bar arrangements for rack-mounted devices with withdrawable units · CPC title

• H01R13/46

  Bases; Cases · CPC title

• H01R39/48

  by air blast; by surrounding collector with non-conducting liquid or gas · CPC title

• H02G5/10

  Cooling · CPC title

• H02B1/565 Primary

  for cabinets · CPC title