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:
Dec. 14, 1999
Filed:
Jan. 15, 1998
Kenneth George Blatti, Rochester, MN (US);
Mark Garrison Clark, Rochester, MN (US);
Todd Douglas Green, Rochester, MN (US);
Sukhvinder Singh Kang, Rochester, MN (US);
David George Lund, Byron, MN (US);
Christopher William Mann, Rochester, MN (US);
Stephen Peter Mroz, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A cooling system for a host device affords enhanced reliability using multiple blower units mounted in parallel between a low pressure plenum and a high pressure plenum and a control system that senses when a blower unit is failing or has failed and responds by shutting down the failed unit and increasing the speed of the remaining blowers to maintain the air flow volume delivered to the cooling path. To maintain the integrity of the cooling air path while affording continuous operation of the host device, a spring biased closure door seals the access opening through which the blower is mounted when a blower unit is removed and displaced by the blower unit to an inoperative position against the biasing force of the spring when the blower unit is installed or replaced. To prevent recirculation through a vacated blower unit mounting space, a one way air flow device, in the form of a shutter assembly including plural pivoting louvers or vanes is mounted at the exhaust location of each blower. Thus the cooling air delivery is maintained and a blower unit can be removed for maintenance or replacement without interruption or impairment of host device operation.