System and method for ventilating and isolating electrical equipment

Patent metadata

Field	Value
Publication number	US-9609769-B2
Application number	US-84651110-A
Country	US
Kind code	B2
Filing date	Jul 29, 2010
Priority date	Jul 29, 2010
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

According to various embodiments, a system includes a power center or other electrical system. The system includes an enclosure having a ventilation opening and an isolation assembly. The isolation assembly includes a deformable portion and a blocking portion. The blocking portion is capable of substantially blocking the ventilation opening with a blocking surface. The deformable portion is configured to deform due to a level of pressure being applied to the isolation assembly such that the deformable portion plastically deforms and carries the blocking surface toward the ventilation opening.

First claim

The invention claimed is:

1. A system comprising:
an electrical enclosure having a ventilation opening;
an isolation assembly comprising a metal sheet, wherein the metal sheet comprises a deformable portion and a blocking portion, wherein the blocking portion is capable of substantially blocking the ventilation opening with a blocking surface of the metal sheet and wherein the deformable portion comprises slits extending at least partially through the metal sheet, wherein the slits are configured to plastically deform into openings in response to a level of pressure being applied to the metal sheet from with the electrical cabinet such that the deformable portion plastically deforms and carries the blocking surface toward the ventilation opening; and
an attachment feature configured to couple the metal sheet to the electrical enclosure adjacent the ventilation opening in the electrical enclosure.

2. The system of claim 1 , wherein the electrical enclosure has a plurality of ventilation openings, and the blocking portion of the metal sheet is capable of blocking the plurality of ventilation openings.

3. The system of claim 1 , wherein the isolation assembly is coupled to an inner surface of the electrical enclosure such that the deformable portion is configured to deform to carry the blocking surface toward the inner surface when the level of pressure is reached within the electrical enclosure.

4. The system of claim 1 , wherein the isolation assembly is disposed on a door of the electrical enclosure.

5. The system of claim 1 , wherein the metal sheet comprises the blocking portion and two deformable portions, wherein the blocking portion is disposed between the two deformable portions.

6. The system of claim 1 , wherein each of the slits is oriented in a first direction, and wherein the slits are configured to plastically deform into openings such that opposing edges of each slit separate from each other.

7. The system of claim 6 , wherein the deformable portion is configured to plastically deform to carry the blocking surface toward the ventilation opening in a second direction substantially perpendicular to the first direction.

8. The system of claim 1 , wherein the slits are oriented substantially parallel to each other and are offset relative to each other such that the slits are configured to plastically deform into a grating pattern of openings in response to the level of pressure being applied to the metal sheet.

9. The system of claim 1 , wherein the blocking portion comprises a flat portion of the metal sheet without any openings or cuts.

10. The system of claim 1 , wherein the blocking portion includes a plurality of raised features, wherein each of the plurality of raised features of the blocking portion is aligned with one of a plurality of ventilation openings such that the raised features fit into the ventilation openings.

11. The system of claim 1 , wherein the metal sheet is flat when the deformable portion is not deformed, and wherein the metal sheet is bent when the deformable potion is deformed to carry the blocking portion toward the ventilation opening.

12. An isolation assembly for use in an electrical enclosure, comprising:
a metal sheet, comprising:
a blocking portion capable of substantially blocking a ventilation opening in the electrical enclosure with a blocking surface of the metal sheet; and
a deformable portion comprising slits extending at least partially through the metal sheet, wherein the slits are configured to plastically deform into openings in response to a level of pressure being applied to the metal sheet from within the electrical enclosure such that the deformable portion plastically deforms and carries the blocking portion toward the ventilation opening; and
an attachment feature configured to couple the metal sheet to the electrical enclosure adjacent the ventilation opening in the electrical enclosure.

13. The isolation assembly of claim 12 , wherein the attachment feature offsets the metal sheet from the ventilation opening by a distance when the deformable portion is not deformed and wherein the deformable portion is capable of plastically deforming such that the blocking portion is carried the distance toward the ventilation opening.

14. The isolation assembly of claim 12 , comprising attachment features configured to couple at least two opposite ends of the metal sheet to the electrical enclosure, wherein the metal sheet comprises two deformable portions, each deformable portion disposed between one of the ends of the metal sheet and the blocking portion.

15. The isolation assembly of claim 12 , wherein each of the slits is oriented in a first direction, and wherein the slits are configured to plastically deform into openings such that opposing edges of each slit separate from each other.

16. The isolation assembly of claim 12 , wherein the slits are oriented substantially parallel to each other and are offset relative to each other such that the slits are configured to plastically deform into a grating pattern of openings in response to the level of pressure being applied to the metal sheet.

17. A method, comprising:
substantially blocking a ventilation opening of an electrical enclosure using a blocking portion of a metal sheet; and
plastically deforming slits into openings, the slits extending at least partially through deformable portion of the metal sheet, in response to a level of pressure being applied to the metal sheet from within the electrical enclosure such that the deformable portion plastically deforms and carries the blocking portion toward the ventilation opening.

18. The method of claim 17 , comprising plastically deforming slits extending through two deformable portions of the metal sheet disposed on opposite sides of the blocking portion of the metal sheet.

19. The method of claim 17 , comprising plastically deforming the slits into openings such that opposing edges of each slit separate from each other, wherein each slit is oriented in a first direction, such that the deformable portion plastically deforms to carry the blocking portion of the metal sheet toward the ventilation opening in a second direction substantially perpendicular to the first direction.

Assignees

• Kingston Murray Peter
• Rockwell Automation Tech Inc

Inventors

• Kingston Murray Peter

Classifications

• H05K5/0214

  with means preventing penetration of rain water or dust (semi-permeable membranes H05K5/0215, H05K5/0216) · CPC title

• H02B1/565 Primary

  for cabinets · CPC title

• H02B13/045

  Details of casing, e.g. gas tightness · CPC title

• H01H9/342

  Venting arrangements for arc chutes · CPC title

• H05K5/0213 Primary

  Venting apertures; Constructional details thereof · CPC title