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:
May. 08, 2018
Filed:
Oct. 02, 2013
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Yousuke Koizuka, Kanagawa, JP;
Tatsuomi Nakayama, Kanagawa, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
Abstract
The heat-radiating system which radiates heat by heat exchange between a substrateand cooling fluid. The heat-radiating system has a cooling structure that includes a vortex flow generating portion Con the surface of the substratein contact with the cooling fluid. The vortex flow generating portion Cis composed of a plurality of recessesthat extend in the direction β intersecting the flow direction of the cooling fluid and causes a vortex flow depending on the flow condition of the cooling fluid. The recess depth H of the vortex flow generating portion and the laminar sub-layer thickness δnear the wall surface satisfy the relation of H>δ=63.5/(Re)×d (where Re is the Reynolds number, d is the characteristic length, and the Reynolds number is Re=ud/v where v is the kinematic viscosity of the cooling fluid, u is the flow velocity of the cooling fluid and d is the characteristic length), and operation of the heat radiating system is controlled such that the flow conditions of the cooling fluid fall within the range in which the relation of u/v≤206×d(where u, v and d are as defined above) satisfied.