Abstract: A rotor of a rotary dynamoelectric machine incudes a magnetically conductive body, having substantially axially running slots distributed around the circumference. A squirrel cage includes electrical conductors which are arranged in the slots. The electrical conductors are electrically contacted at the two end faces of the rotor by short-circuit rings. The magnetically conductive body includes a base body and at least two further additional bodies, which axially adjoin the base body. A first one of the at least two additional bodies directly axially adjoins the end face of the base body, and a second one of the at least two additional bodies and optionally any further additional body axially adjoin the first additional body. The slots have radially exposed slot portions in the axial end regions of the rotor such that the conductors can be moved radially outward.

Abstract: The invention relates to an electrical machine (1) comprising a rotor (4) which is rotatably mounted around a rotation axis (5) extending in the axial direction (3) in bearing devices (16, 17), a stator (7) having two axial ends, an air gap between rotor and stator, an interior chamber (10) encompassing the stator (7) and rotor (4), a sleeve (11) encompassing a first part (111) which encloses the interior chamber (10), a frame (12) having a first (123) and a second (121) longitudinal support (123), a first (122) and a second (124) cross-support, and a dividing device (2) on the frame (12). The stator (7) comprises a fastening device (15) for connection to the frame (12) and the dividing device (2) can make the interior chamber accessible from the outside in a plane parallel to the frame (12). The invention further relates to a collection, to a frame (12), to a sleeve (11), or to a service or production method of such an electrical machine (1).

Abstract: A device for lubricating an antifriction bearing of an electric motor includes a lubrication chamber located around a shaft of the electric motor and adjacent to the antifriction bearing when the shaft rotates. The lubrication chamber has a radial outer wall which is provided with at least one opening. An oil reservoir configured for arrangement on an exterior or an interior of the electric motor includes an oil pan and a ring-shaped or disk-shaped oil delivery member which directly or indirectly moves along on the shaft and is configured to run through the oil pan and to enable oil to be transported from the oil pan into the lubrication chamber, with oil being able to flow out of the lubrication chamber via the at least one opening back into the oil pan.

Abstract: A device for lubricating an antifriction bearing of an electric moto includes a lubrication chamber located around a shaft of the electric motor and adjacent to the antifriction bearing when the shaft rotates. The lubrication chamber has a radial outer wall which is provided with at least one opening. An oil reservoir configured for arrangement on an exterior or an interior of the electric motor includes an oil pan and a ring-shaped or disk-shaped oil delivery member which directly or indirectly moves along on the shaft and is configured to run through the oil pan and to enable oil to be transported from the oil pan into the lubrication chamber, with oil being able to flow out of the lubrication chamber via the at least one opening back into the oil pan.

Abstract: An electric machine includes an inner fan in an inner cooling circuit and an outer fan for producing an outer coolant flow that is separate from the inner cooling circuit. The inner and outer fans are connected to a common shaft of the electric machine and have opposite delivery directions along an axial direction of the electric machine. The outer fan is arranged in a fan housing which has an inlet opening for the inward flow of a coolant of the outer coolant flow, and includes an air directing device, which guides the coolant in a line section which extends in the radial direction of the electric machine from the inlet opening towards the outer fan.

Abstract: The invention relates to an electrical machine (1) comprising a rotor (4) which is rotatably mounted around a rotation axis (5) extending in the axial direction (3) in bearing devices (16, 17), a stator (7) having two axial ends, an air gap between rotor and stator, an interior chamber (10) encompassing the stator (7) and rotor (4), a sleeve (11) encompassing a first part (111) which encloses the interior chamber (10), a frame (12) having a first (123) and a second (121) longitudinal support (123), a first (122) and a second (124) cross-support, and a dividing device (2) on the frame (12). The stator (7) comprises a fastening device (15) for connection to the frame (12) and the dividing device (2) can make the interior chamber accessible from the outside in a plane parallel to the frame (12). The invention further relates to a collection, to a frame (12), to a sleeve (11), or to a service or production method of such an electrical machine (1).

Abstract: An electric machine includes an inner fan in an inner cooling circuit and an outer fan for producing an outer coolant flow that is separate from the inner cooling circuit. The inner and outer fans are connected to a common shaft of the electric machine and have opposite delivery directions along an axial direction of the electric machine. The outer fan is arranged in a fan housing which has an inlet opening for the inward flow of a coolant of the outer coolant flow, and includes an air directing device, which guides the coolant in a line section which extends in the radial direction of the electric machine from the inlet opening towards the outer fan.

Abstract: An electric machine has a housing, a rotor shaft mounted in the housing, a rotor laminate stack arranged on the rotor shaft and having axial cooling channels and radial cooling channels, and a stator laminate stack having radial cooling channels which are open radially inwards and radially outwards and interact with the radial cooling channels of the rotor laminate stack. The housing has a lateral surface to delimit the housing interior in a radial direction and radial dividers arranged between end windings of the stator winding and the axial ribs, when viewed in the radial direction, and are spaced in the radial direction from the lateral surface delimiting the housing interior and forming tangential cooling air channels for the cooling air.

Abstract: A housing attachment for an electric machine is constructed in compliance with protection class IP 23 and includes a first projected edge disposed at a first border wall such that water located in the middle section at the first border wall drips off no later than at the first projected edge and is led directly or indirectly to the first air inlet opening. Proximate to the first air inlet opening are first laminates which deflect incoming air flowing into the feed air channel to a second edge area. Proximate to the second air outlet opening are second laminates that impart to the flow direction of the outgoing air leaving the outlet air channel a component directed to the top of the electric machine. Third laminates are disposed in an end area of the outlet air channel to deflect the outlet air flowing in the outlet air channel away from the top of the electric machine.

Abstract: An electric machine with improved cooling efficiency includes a stator, a rotor operating as a rotor fan and comprising a shaft defining an axial direction and having radial and axial cooling channels, and an axial fan configured as a twin axial fan and arranged coaxially with the shaft and supplying a coolant to the axial cooling channels. The axial fan has first and second blade rings and a funnel-shaped tube with a smaller opening directly connected to the axial cooling channels of the rotor to deliver coolant to the axial cooling channels of the rotor, and a larger opening, which is non-rotatably connected to and encloses the first blade ring. The second blade ring is firmly attached at an outer circumference of the funnel-shaped tube to deliver the coolant to the stator. Both the stator and the rotor can be cooled using an efficient coolant flow.

Abstract: Certain exemplary embodiments can comprise a system, which can comprise an electric motor cooling fan. The electric motor cooling fan can be driven by an auxiliary motor distinct from an electric motor adapted to be cooled by the electric motor cooling fan. The system can comprise a motor enclosure of the electric motor. The motor enclosure can be configured in a predetermined ventilation pattern.

Abstract: A rotor shaft (2) is mounted in the housing (1) of an electric machine so as to be rotatable about a shaft axis (3). The housing (1) has two front faces (4) which axially delimit a housing interior (6). The housing has a peripheral surface (5) which radially delimits the housing interior (6). A rotor lamination stack (7) is arranged on the rotor shaft (2), said stack having axially extending cooling channels (8) and radially extending cooling channels (9). The radially extending cooling channels (9) of the rotor lamination stack (7) are radially open to the outside and extend radially inwards to at least the axially extending cooling channels (8). The housing (1) has two axial dividers (10) which extend radially inwards starting from the peripheral surface (5) but end in front of the rotor shaft (2).; The axial dividers (10) are arranged between the rotor lamination stack (7) and the front faces (4) when seen in the axial direction.

Abstract: A housing attachment for an electric machine is constructed in compliance with protection class IP 23 and includes a first projected edge disposed at a first border wall such that water located in the middle section at the first border wall drips off no later than at the first projected edge and is led directly or indirectly to the first air inlet opening. Proximate to the first air inlet opening are first laminates which deflect incoming air flowing into the feed air channel to a second edge area. Proximate to the second air outlet opening are second laminates that impart to the flow direction of the outgoing air leaving the outlet air channel a component directed to the top of the electric machine. Third laminates are disposed in an end area of the outlet air channel to deflect the outlet air flowing in the outlet air channel away from the top of the electric machine.

Abstract: An electric machine with improved cooling efficiency includes a stator, a rotor operating as a rotor fan and comprising a shaft defining an axial direction and having radial and axial cooling channels, and an axial fan configured as a twin axial fan and arranged coaxially with the shaft and supplying a coolant to the axial cooling channels. The axial fan has first and second blade rings and a funnel-shaped tube with a smaller opening directly connected to the axial cooling channels of the rotor to deliver coolant to the axial cooling channels of the rotor, and a larger opening, which is non-rotatably connected to and encloses the first blade ring. The second blade ring is firmly attached at an outer circumference of the funnel-shaped tube to deliver the coolant to the stator. Both the stator and the rotor can be cooled using an efficient coolant flow.

Abstract: The invention relates to an electric appliance (1) which comprises a machine module (2) provided with an electric machine (3) comprising a stator (4) and a rotor. A machine housing (7) of the machine module (2) receives the electric machine (3). A cooling module (19) comprises a cooling housing (21), which is fluidically connected to the machine housing (7) by means of a first cooling fluid connection area (20) in a housing wall (17) of the machine housing (7) and to at least one second cooling fluid connection area (23) in the housing wall (17) of the machine housing (7). The inside of the machine housing (7) can be fluidically connected to the inside of the cooling housing (21) in one section of the housing wall (17), which is oriented towards the cooling housing (21), by means of at least one third cooling fluid connection area (25) comprising at least one cooling fluid through-opening (26).

Abstract: The invention relates to an electric appliance (1) which comprises a machine module (2) provided with an electric machine (3) comprising a stator (4) and a rotor. A machine housing (7) of the machine module (2) receives the electric machine (3). A cooling module (19) comprises a cooling housing (21), which is fluidically connected to the machine housing (7) by means of a first cooling fluid connection area (20) in a housing wall (17) of the machine housing (7) and to at least one second cooling fluid connection area (23) in the housing wall (17) of the machine housing (7). The inside of the machine housing (7) can be fluidically connected to the inside of the cooling housing (21) in one section of the housing wall (17), which is oriented towards the cooling housing (21), by means of at least one third cooling fluid connection area (25) comprising at least one cooling fluid through-opening (26).

Abstract: Certain exemplary embodiments can comprise a method, which can comprise obtaining an electric motor cooling fan. The electric motor cooling fan can be adapted to be operatively coupled to a motor enclosure of an electric motor. The motor enclosure can be configured in a ventilation pattern selected from a plurality of ventilation patterns.

Abstract: Certain exemplary embodiments can comprise a system, which can comprise an electric motor cooling fan. The electric motor cooling fan can be driven by an auxiliary motor distinct from an electric motor adapted to be cooled by the electric motor cooling fan. The system can comprise a motor enclosure of the electric motor. The motor enclosure can be configured in a predetermined ventilation pattern.