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:
Nov. 19, 2002
Filed:
Apr. 23, 2001
Toshiyuki Umemoto, Tokyo, JP;
Yuji Ikeda, Tokyo, JP;
Ryoji Nagatani, Tokyo, JP;
Satoru Kotoh, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A hub, to which three blades receiving wind are fixed and extending in a radial direction of the hub at equal intervals. The hub is arranged in a spindle-shaped boss having a rectification function. A cylindrical frame is arranged on the leeward side of the boss to separate an outer peripheral surface of a generator from outside air. An outer surface of the boss, which rotates with the blades, and an outer peripheral surface of the frame form a continuous plane. On the outer peripheral surface of the frame, fins, which outwardly protrude in a radial direction of the frame and extend in an axial direction of the frame, are arranged in a circumferential direction of the frame at equal intervals. After the outside air rotates the blades, the outside air passes along the fins. Therefore, heat, which is generated in the generator and is transferred to the fins through the frame by conduction, is dissipated to the outside air. Accordingly, the temperature of the generator can be reliably maintained at a value equal to or lower than a standard value, and a wind power generating device having a simple cooling structure can be manufactured.