The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2003
Filed:
Apr. 04, 2002
Lee Hilpert, Livingston, TX (US);
Gary L. Hensley, Kingwood, TX (US);
Hutchison-Hayes International, Inc., Houston, TX (US);
Abstract
A purge system develops a positive pressure in an enclosure, with sufficient volumetric air flow to cool the electrical components. The system includes an air inlet hose, with the input into the inlet hose positioned in an unclassified (i.e. safe) area. The inlet hose couples to the suction of an air blower, which may be mounted inside or outside the enclosure, while the discharge of the air blower is inside the enclosure, thereby providing the necessary positive pressure (purge) within the enclosure. The air discharged from the air blower strikes a baffle, which distributes the blowing air throughout the bottom of the enclosure. The distributed air is then drawn into controller cabinets by dedicated cooling fans. A conduit system connects the controller cabinets to take the now heated air from the cabinets to a discharge outside the enclosure. The outlet of the conduit system may include a counter-weighted flapper valve to maintain the pressure within the enclosure.