Electric propulsion units

H - Electricity – 02 – K

Patent

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Details

H02K 9/10 (2006.01) H02K 9/12 (2006.01) H02K 1/32 (2006.01) H02K 5/20 (2006.01)

Patent

CA 2456559

A propulsion unit arranged to propel a water borne vessel comprising an electric motor, arranged to provide propulsion, and a housing (4), arranged to contain the motor, the interior of the housing (4) being maintained at an increased pressure of above roughly 2 bar to increase the cooling effect of a cooling gas maintained therein. Further, it is disclosed that for the propulsion unit to comprise a housing (4) that contains the motor, wherein an end region of the housing is provided with a heat exchange mechanism (59) arranged to cool cooling gas passing thereover, the heat exchange mechanism being associated with the housing such that, in use, water surrounding the housing absorbs heat therefrom. The unit can be arranged to make use of either, or both, of the features.

Cette invention se rapporte à une unité de propulsion conçue pour propulser un engin hydroptère et comprenant à cet effet un moteur électrique, destiné à assurer la propulsion, et un logement (4), destiné à contenir le moteur, l'intérieur de ce logement (4) étant maintenu à une pression accrue supérieure à environ 2 bars, afin d'accroître l'effet de refroidissement d'un gaz de refroidissement maintenu dans ledit logement. On prévoit en outre que cette unité de propulsion comprenne un logement (4) qui contient le moteur et dont une zone terminale est pourvue d'un mécanisme d'échange thermique (59) servant à refroidir le gaz de refroidissement passant sur ledit mécanisme, ce mécanisme d'échange thermique étant associé au logement pour que, lors de l'utilisation, l'eau entourant le logement absorbe l'énergie thermique de l'eau. Cette unité peut être conçue pour utiliser l'une et/ou l'autre de ces deux caractéristiques.

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