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.

Date of Patent:
Nov. 07, 2017

Filed:

Jul. 31, 2012
Applicants:

Hiroki Kobayashi, Kawasaki, JP;

Yuichi Sato, Yamato, JP;

Sachio Kobayashi, Sagamihara, JP;

Inventors:

Hiroki Kobayashi, Kawasaki, JP;

Yuichi Sato, Yamato, JP;

Sachio Kobayashi, Sagamihara, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25D 17/04 (2006.01); G06F 1/20 (2006.01); H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
G06F 1/206 (2013.01); H05K 7/20836 (2013.01); Y02B 60/1275 (2013.01);
Abstract

A method of controlling air conditioning to cool servers, the method includes selecting, when the number of operating servers is a certain threshold number or more, a first mode, in which the pressure of a cold aisle is set higher than the pressure of a hot aisle; selecting, when the number of operating servers is less than the certain threshold number, a second mode, in which the pressure of the cold aisle is set equal to the pressure of the hot aisle; and informing the operating servers of whether a current mode is the first mode or the second mode, and when the current mode is the first mode, driving fans of the servers at a minimum rotational speed in a specification, and when the current mode is the second mode, driving the fans of the servers at a rotational speed higher than the minimum rotational speed in the specification.


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