Patent ID: 9680353
Date: 2017-06-13
CPC Classifications: H02K

Claim:
1. An electrical machine, comprising: a shaft defining an axis; an inner fan connected to the shaft and disposed in an inner coolant circuit, said inner fan being configured to operate in a first axial direction of conveyance; an outer fan connected to the shaft and configured to produce an outer coolant flow which is separate from the inner coolant circuit in a second axial direction of conveyance opposite to the first axial direction of conveyance and to divert the outer coolant flow in an axial direction; a fan housing accommodating the outer fan and having an inlet opening for inward flow of a coolant of the outer coolant flow; a first air guidance device formed by an inner wall of the fan housing and an air guidance element to guide the coolant in a line section which extends in a direction radially to the axis from the inlet opening to the outer fan; a second air guidance device disposed on an outer surface of the fan housing such that an axial channel is defined between the outer surface of the fan housing and an inner wall of the second air guidance device, said second air guidance device having an inlet opening configured to permit flow of coolant into the channel essentially along the axial direction, with the coolant flowing through the axial channel in a direction opposite to the second axial direction of conveyance; and a cooler housing through which the outer coolant flow from the outer fan flows, said cooler housing having an outlet opening disposed at a distance from the inlet opening of the first air guidance device in an area of a drive side of the electrical machine, with the inlet opening of the first air guidance device disposed on a non-drive side of the electrical machine.