Goods & Services

Electronic machines, In particular electric generators and electric motors; Alternating current machines; Asynchronous machines, in particular asynchronous generators and Asynchronous motors; Cage rotor machines; Synchronous machines, in particular synchronous generators and Synchronous motors; Direct current machines; Series machines, in particular for marine propulsion systems; Permanently energised machines, in particular permanent magnet motors and permanent magnet generators; Direct drives; Drive, pump or auxiliary motors being main or auxiliary drives for floor conveyors and construction and agricultural machinery; Wheel hub drives for aircraft; Electronic machines, Namely electric motors for battery-powered watercraft and aircraft, in particular electric vehicles. Electric machines, namely electric motors for land vehicles; Alternating current motors, namely AC motors for land vehicles; Asynchronous machines, namely asynchronous motors for land vehicles; Cage rotor machines, namely cage rotor machines for land vehicles; Synchronous machines, namely synchronous motors for land vehicles; Direct current machines, namely direct current motors for land vehicles; Series machines, namely series motors for land vehicles; Permanently energised electric machines, namely permanently energised electric motors for land vehicles, in particular permanent magnet motors; Direct drives for land vehicles; Drives and motors for hybrid and diesel electric systems in land vehicles; Drive, pump or auxiliary motors being main or auxiliary drives for land vehicles; Wheel hub drives for land vehicles; Drive systems with electric machines for land vehicles; Electric machines, namely electric motors for battery-operated land vehicles, in particular electric vehicles. Repair, optimisation, maintenance, problem analysis and servicing of generators, drives, pumps, machines.

Abstract

The invention relates to an electrical machine having a rotor which is arranged on a shaft, a stator, an end plate which is connected to the stator and in which a rotor bearing is arranged, and a pulse generator which is connected to the shaft in a rotationally fixed manner, and a rotation speed sensor which is connected to the end plate in a stationary manner. The rotor bearing is arranged between the stator and the pulse generator. The end plate has, axially in the direction of the rotor, an entry, within which the pulse generator is arranged, and, at its end face, openings through which the cooling medium is exchanged.

IPC Classes  ?

• H02K 5/15 - Mounting arrangements for bearing-shields or end plates
• H02K 29/14 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with speed sensing devices

Abstract

The invention relates to an electric machine (2) comprising a rotor (10), a stator (20) with a circumferentially arranged stator winding (22) that consists of an electrically conductive material, and a housing (30) with a first and a second opening (32, 34) extending in a circumferential direction. A ventilator (40) is arranged on the end-face side of the rotor (10), said ventilator being connected to the rotor (10) in a rotationally fixed manner and having radially extending vanes (42). A cooling medium (46) is aspirated from the ventilator (40) via the first opening (32), blown out via the second opening (34) and swiftly conveyed past, at least at sub-regions of the stator winding (22), between said first and second opening (32,34).

IPC Classes  ?

• H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft