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:
Mar. 13, 2012
Filed:
Jul. 13, 2007
Jouni Ikäheimo, Kurikka, FI;
Jere Kolehmainen, Merikaarto, FI;
Jari Pekola, Vantaa, FI;
Tommi Ryyppö, Espoo, FI;
Jouni Ikäheimo, Kurikka, FI;
Jere Kolehmainen, Merikaarto, FI;
Jari Pekola, Vantaa, FI;
Tommi Ryyppö, Espoo, FI;
ABB Oy, Helsinki, FI;
Abstract
A cooling arrangement is disclosed for an electrical machine in which the main cooling air circulation within the machine is arranged using a centrifugal blower in at least one of the ends of the machine, making the main cooling air circulation flow through at least an air space in the machine and the outer surface of the stator. A circulating fan is arranged in the immediate vicinity of the centrifugal fan for the purpose of generating a coil end circulation that circulates air at least in the area of the machine's coil ends.