Abstract: An electrical machine includes housing surrounding a stator laminated core and a stator winding. Stator core support rings are arranged between the housing and the stator laminated core and radially surround the stator laminated core, with a cavity being formed between the housing, the stator laminated core and the stator core support rings. The stator laminated core has a cooling channel which is fluidically coupled with the cavity via a channel entry arranged centrally in the middle of the stator laminated core, thereby creating in conjunction with the channel entry a T-shaped form of the cooling channel so that a stream of coolant is not heated over an entire length of the stator laminated core, but only over a shorter stretch as a result of the T-shaped form.

Abstract: A stator arrangement for an electrical machine includes a casing element as one component and at least two stator segments, which are arranged in the casing element as further components. One of the components has a feather key groove and another one of the components has a feather key, which corresponds with the feather key groove, for bracing the one component against the other component.

Abstract: A stator arrangement for an electrical machine includes a casing element as one component and at least two stator segments, which are arranged in the casing element as further components. One of the components has a feather key groove and another one of the components has a feather key, which corresponds with the feather key groove, for bracing the one component against the other component.

Abstract: A resonator unit includes a resonator chamber with a first opening for receiving container in a predefined position and for heating the container with microwaves coupled into the resonator chamber. The chamber has a second opening via which the microwaves are coupled into the resonator chamber, wherein the geometry of the resonator chamber relative to the predefined position of the container in the first opening is adapted by a device for adapting the geometry so that an electric field produced in the resonator chamber in a working mode is symmetrical in relation to the container or the impedance of the resonator unit equipped with container is approximately constant for containers of different configurations.

Abstract: A dynamo-electric machine, in particular a multi-pole dynamo-electric machine includes a shaft and an integrated fan which is connected to the shaft by a friction-wheel planetary gear. The friction-wheel planetary gear has first and second rolling bearings, with the first rolling bearing having an outer ring mounted in the hub of the fan, and the second rolling bearing having an outer ring which is press-fitted in the hub of the fan. Arranged between the first and second rolling bearings is a driving bush for transmitting a rotational speed of the shaft onto balls of the second bearing to thereby increase a rotational speed of the fan by a predefined factor compared to the rotational speed of the shaft.

Abstract: A resonator unit (16) comprising a resonator chamber (40) with a first opening (42) for receiving a container (10) in a predefined position and for heating the container (10) by means of microwaves coupled into the resonator chamber (40), and with a second opening (44) via which the microwaves are coupled into the resonator chamber (40), wherein the geometry of the resonator chamber (40) relative to the predefined position of the container (10) in the first opening (42) is adapted by a device for adapting the geometry so that an electric field produced in the resonator chamber (40) in a working mode is symmetrical in relation to the container or the impedance of the resonator unit (16) equipped with a container (10) is approximately constant for containers (10) of different configurations.