Rotating machine, primary motor-pump unit equipped with this rotating machine

Abstract

The present invention relates to a rotating machine (10), whose oil sealing device (35) includes an outside air intake groove (52). The invention is characterized in that the device (35) comprises, in a lower portion (321) of the wall (320) and / or in a lower portion (361) of the rotating part (360), an air intake groove (252) from an intake zone (253) located between the upper opening (322) of the housing (32) and the air intake groove (252), the groove (252) extending from the zone (253) to an air collection zone (254) and being configured to draw air from the compartment (31) through the zone (253) and the opening (322) of the housing to the zone (254) when the shaft (33) rotates in the prescribed direction (S) of rotation. Figure for the abbreviation: Figure 6