Electrical equipment and a method of manufacturing

Patent metadata

Field	Value
Publication number	US-9622374-B2
Application number	US-201514814560-A
Country	US
Kind code	B2
Filing date	Jul 31, 2015
Priority date	Aug 8, 2014
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

Electrical equipment that includes a cabinet comprising a plurality of walls is provided. The cabinet is disposed around a plurality of electric components such as conductors. Further, the electrical equipment also includes at least one barrier. The barrier is disposed in the cabinet and spaced apart from the conductor by a spacing distance to define a channel within the cabinet for air to flow between the barrier and the conductor. The barrier is placed such that a portion of the barrier is coupled to one of the plurality of walls of the electric cabinets.

First claim

The invention claimed is:

1. An electrical equipment, comprising:
a cabinet comprising a plurality of walls disposed around a plurality of electric components, wherein the plurality of electric components comprise a conductor;
at least one barrier disposed in the cabinet and spaced apart from the conductor by a spacing distance to define a channel within the cabinet for air to flow between the barrier and the conductor, wherein a portion of the barrier is coupled to one of the plurality of walls of the cabinet; and
a plurality of side barriers each comprising a plurality of sides, wherein one side of each of the plurality of side barriers is coupled to a supporting wall and another side of each side barrier is coupled to the at least one barrier to define at least one compartment surrounding at least a portion of the conductor;
wherein at least one of the side barriers comprises a plurality of unobstructed perforations defined therethrough to allow an air jet to flow therethrough towards the conductor;
wherein a ratio of a measurement of a longitudinal dimension of a side of the at least one barrier that is facing the conductor to the spacing distance is one of greater than 20 and less than 2.5.

2. The electrical equipment of claim 1 , wherein the at least one barrier comprises a thermally insulating material.

3. The electrical equipment of claim 1 , wherein the plurality of perforations are defined at regular intervals along the length of the barrier.

4. The electrical equipment of claim 1 , wherein the spacing distance between the at least one barrier and the conductor is constant.

5. The electrical equipment of claim 1 , wherein the spacing distance between the at least one barrier and the conductor varies along a dimension of the at least one barrier.

6. The electrical equipment of claim 1 , wherein the at least one barrier comprises a venturi profile in which the spacing distance is at a minimum between a central region of the at least one barrier and the conductor and increases from the central region towards a plurality of ends of the at least one barrier along a dimension of the at least one harrier.

7. The electrical equipment of claim 1 , wherein the conductor is placed on the supporting wall.

8. The electrical equipment of claim 1 , wherein the plurality of side barriers are disposed such that a distance between any two of the plurality of side barriers changes along a portion of the spacing distance.

9. The electrical equipment of claim 1 , wherein the conductor comprises a busbar.

10. The electrical equipment of claim 1 , wherein at least one of the plurality of walls of the cabinet comprises an opening to allow ambient air to enter the channel between the at least one barrier and the conductor.

Assignees

• Gen Electric

Inventors

• Bhattacharya Anandaroop
• Dasgupta Subhasish
• Greenwood Peter James
• Meiners Steven Edward

Classifications

• H05K7/2089

  for power electronics, e.g. for inverters for controlling motor · CPC title

• H02B1/21

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

• H05K7/20127 Primary

  Natural convection · CPC title

• H05K7/20009 Primary

  using a gaseous coolant in electronic enclosures (in cabinets of standardized dimensions H05K7/20536; in server cabinets H05K7/20709; in vehicle electronic casings H05K7/20845; in power control electronics H05K7/2089; in displays H05K7/20954) · CPC title

• H02B1/56 Primary

  Cooling; Ventilation · CPC title