An air cooled electric motor having an increased airflow and a method for increasing the airflow therein

An air cooled electric motor, comprising:

• a compressor outlet housing, wherein the compressor outlet housing includes a motor cavity separator wall and a separator plate defining a separator plate opening and a separator plate cavity,
• wherein the compressor outlet housing defines a compressor rotor back-face cavity configured to receive a back-face cavity airflow, and
• wherein the motor cavity separator wall separates the separator plate cavity from the compressor rotor back-face cavity and defines at least one motor cavity separator wall through-hole which communicates the compressor rotor back-face cavity with the separator plate cavity;
• and
• a motor cooling housing including a motor cooling outlet structure which defines a motor cooling outlet structure inlet, a motor cooling outlet, a stator motor cooling flow path and a stator outlet cavity, wherein the stator outlet cavity communicates the stator motor cooling flow path with the motor cooling outlet structure inlet, and
• wherein the separator plate is disposed to separate the stator outlet cavity from the separator plate cavity, and wherein the separator plate opening is configured to allow the back-face cavity airflow to flow into the stator outlet cavity and into the motor cooling outlet structure inlet.