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:
Oct. 28, 2003
Filed:
Jul. 17, 2002
Hitachi Ltd., Tokyo, JP;
Abstract
In an information processing apparatus with a cooling structure using a heat transport measure such as a heat pipe and a liquid-cooling system, a heat radiation unit has reduced thickness and noise and an improved efficiency. Heat generated by a CPU is transmitted through a heat receiving header and a flexible tube to the heat radiation unit by liquid coolant transported by a pump. The heat radiation unit comprises a propeller, a wall surface in contact with the propeller, and a cooling pipe spirally wound around a propeller shaft in a plane perpendicular to the propeller shaft. Hot coolant is circulated so as to enter the central portion of the cooling pipe and to be discharged from the outer peripheral portion of the pipe. The cooling air from the propeller is made to flow from the central portion of the cooling pipe toward its peripheral portion. The cooling pipe is thermally connected to the wall surface so that the wall surface works as a heat spreader.