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1. (WO2015120162) INTERNAL CLOSED LOOP COOLING

Pub. No.:    WO/2015/120162    International Application No.:    PCT/US2015/014640
Publication Date: Fri Aug 14 01:59:59 CEST 2015 International Filing Date: Fri Feb 06 00:59:59 CET 2015
IPC: B21D 53/02
H02K 9/16
H02K 9/18
Applicants: CANRIG DRILLING TECHNOLOGY LTD.
Inventors: PATRICK, Charles
WILLIAMS, Kevin
Title: INTERNAL CLOSED LOOP COOLING
Abstract:
An electric motor having internal closed loop cooling includes a cooling chamber coupled to the stator cover of the electric motor. A fan is positioned to circulate air through the interior of the electric motor and the cooling chamber. A heat sink in the cooling chamber removes heat from the circulating air. The heat sink may be coupled to a fluid cooling jacket to transfer heat thereto or therefrom.