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:
Apr. 14, 2009
Filed:
Mar. 31, 2006
Shuichi Terakado, Mito, JP;
Atsuo Nishihara, Kashiwa, JP;
Shigeo Ohashi, Tsuchiura, JP;
Rintaro Minamitani, Tsukuba, JP;
Takashi Naganawa, Kasumigaura, JP;
Shuichi Terakado, Mito, JP;
Atsuo Nishihara, Kashiwa, JP;
Shigeo Ohashi, Tsuchiura, JP;
Rintaro Minamitani, Tsukuba, JP;
Takashi Naganawa, Kasumigaura, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an electronic apparatus having a heat-generating element therein, a cooling jacketfor transmitting heat generated from the heat-generating elementinto to a liquid coolant flowing therein, comprises: a coverbuilding up a heat transfer surface to be in contact with a surface of the heat-generating element; a passagefor the liquid coolant, which is formed neighboring with the heat transfer surface and wound round in a 'S'-like manner within an inside of a main bodyof the cooling jacket; and an inletand an outletattached at both ends of the flow passage of the liquid coolant, and further a dispersion memberis disposed in the flow passage, being built up by gathering a plural number of members, each of which has a 'U'-like cross-section of an aspect ratio from 10 to 20, thereby diffusing the liquid coolant therein, so as to transfer the heat from the heat-generating element thereto with high efficiency, and thereby enabling to cool down the heat-generating element, fully, even with a relatively small amount or volume of the liquid coolant.