Motor cooling shroud for fully reversible turbomachinery

A fully reversible turbomachine comprising:

• an impeller having a first side and an opposite second side;
• a motor operatively coupled to the second side of the impeller, the motor being configured to rotate the impeller in a first rotational direction, which generates a forward flow by the fully reversible turbomachine where the motor is downstream from the impeller, and in a second rotational direction, which generates a reverse flow by the fully reversible turbomachine where the motor is upstream from the impeller;
• and
• a motor cooling shroud disposed over the motor, the motor cooling shroud and the motor defining a motor cooling pathway, wherein the motor rotating the impeller in the first rotational direction generates a first motor cooling flow that flows through the motor cooling pathway in a first flow direction, and the motor rotating the impeller in the second rotational direction generates a second motor cooling flow that flows through the motor cooling pathway in a second flow direction that is opposite of the first flow direction, and wherein the motor cooling shroud comprises:
• a first end disposed proximate to the impeller;
• a second end opposite the first end;
• a plate coupled to the second end;
• and
• a central opening disposed within the second end of the motor cooling shroud.

A motor cooling shroud for a fully reversible turbomachine, the motor cooling shroud comprising:

• a first end;
• an opposite second end, the second end defining a central opening that is coaxial with a central axis of the fully reversible turbomachine;
• a sidewall spanning from the first end to the second end, the sidewall being configured to encircle a motor of the fully reversible turbomachine and collectively define a motor cooling pathway with an outer surface of the motor;
• and
• at least one sidewall opening disposed in the sidewall proximate to the first end, wherein, when the fully reversible turbomachine operates in a forward direction, the at least one sidewall opening serves as an outlet of the motor cooling pathway, and, when the fully reversible turbomachine operates in a reverse direction, the at least one sidewall opening serves as an inlet of the motor cooling pathway.