Patent ID: 7878772

Claim:
A compressor assembly that provides a compressed gas fluid, the compressor assembly comprises: an outer assemblage housing; a heat exchanger disposed in the outer assemblage housing and that provides direct or indirect cooling of the compressed gas fluid; an air-cooled electric motor that comprises: a motor unit having a motor housing; and a drive shaft that projects through the motor housing; a ventilator that is coupled to the drive shaft, the ventilator having at least radially and/or axially separated ventilator sections that are configured to propel a first airstream and at least one other airstream, wherein the drive shaft drives the ventilator, wherein the at least one other airstream is separate from the first airstream, wherein the first airstream and the at least one other airstream enter corresponding ventilator sections by way of spatially separated cross sections and emerge from the corresponding ventilator sections without becoming mixed or without being substantially mixed, and wherein at least one of the first airstream or the at least one other airstream are guided through the heat exchanger, further comprising: an inflow channel separator that is located at the inflow side of the ventilator through whose interior the first airstream is guided to the corresponding ventilator section, wherein the inflow channel separator is an air duct which extends between a first opening in the outer assemblage housing and the ventilator, and wherein the first airstream passes through an interior of the air duct, wherein the ventilator includes a separating surface comprising fan blades, said separating surface defining a substantially circular opening which allows air to flow into the ventilator, wherein a portion of the air duct of the inflow channel separator that is proximate to the separating surface is defined by a radius, and wherein the radius of the circular opening substantially matches the radius of the air duct of the inflow channel separator at the proximate portion of the air duct.