A rotary electric machine in which the casing containing the rotor/stator assembly comprises an intermediate closing cover that closes one end of the casing, a roller bearing immersed in oil and seated inside the oil tank of the machine, which has a casing with an outer wall that is spaced apart axially from the intermediate closing cover. The spacing between the outer wall and the intermediate closing cover forms a path for air to flow from a fan or a space to be filled with thermally insulating material.

A transmission includes a fan assembly having a fan wheel, a cover, and a grating. The fan wheel is connected in a torsionally fixed manner to the input shaft of the transmission, and the fan cover is fixed in place on a holding frame, which, for example, includes multiple parts and is fastened to the housing of the transmission. The grating is formed by two grating parts, whose first separating line is a straight segment or is formed by two mutually aligned straight segments, and the cover includes two cover parts, whose second separating line is a plane curve, made up of straight segment sections.

An electric machine including a housing defining a longitudinal axis. A first plurality of fins coupled with an outer surface of the housing, wherein the first plurality of fins is positioned parallel with the longitudinal axis. A second plurality of fins coupled with the outer surface positioned transverse to the longitudinal axis, wherein at least a portion of the second plurality of fins is located axially adjacent to the first plurality of fins. A third plurality of fins coupled with the outer surface, wherein at least a portion of the third plurality of fins is located axially adjacent to the second plurality of fins and beside the first plurality of fins, wherein the third plurality of fins are positioned transverse to the longitudinal axis. A fourth plurality of fins coupled with the outer surface, wherein at least a portion of the fourth plurality of fins is located axially adjacent to the third plurality of fins and beside the second plurality of fins, wherein the fourth plurality of fins are positioned parallel to the longitudinal axis. A first fan assembly is located above at least a portion of the first and second pluralities of fins, and a second fan assembly is located above at least a portion of the third and fourth pluralities of fins.

A drive includes a dynamoelectric rotational machine, an electronic add-on part, and a fan unit arranged axially behind one another. The fan unit generates a cooling air flow and is embodied as a two-zone fan having axial fan elements which define a first zone to generate essentially an axial air flow and include an articulated joint with an elastic region with sufficient restoring force, and radial fan blades which define a second zone that radially adjoins the first zone and generate essentially a radial air flow. Free spaces are provided at least between a housing arrangement and the fan unit and/or between the housing arrangement and a bearing shield of the dynamoelectric rotational machine and/or between the housing arrangement and/or a shaft of the dynamoelectric rotational machine, with the free spaces being acted upon during operation of the fan unit by the cooling air flow and a Venturi effect.

The invention relates to a compressor for refrigerant having a compressor housing, said compressor housing being provided with a suction inlet and a pressure outlet, said compressor comprising a compression unit, arranged in a compression housing section of said compressor housing and an electric motor arranged in a motor housing section of said compressor housing, said electric motor comprising a stator arranged within a stator receiving sleeve of said motor housing section and a rotor surrounded by said stator and arranged on a drive shaft of said electric motor for rotation about an axis of rotation together with said drive shaft, said stator comprising a stator core having a stack of laminations and extending parallel to said axis of rotation from a first front side to a second front side, said stator having windings extending through said stator core and forming end windings arranged in front of said front surfaces, and a channel for guiding at least a portion of said refrigerant entering through said suction inlet along an outer side of said stator before entering said compression unit.

The invention relates to a compressor for refrigerant having a compressor housing, said compressor housing being provided with a suction inlet and a pressure outlet, said compressor comprising a compression unit, arranged in a compression housing section of said compressor housing and an electric motor arranged in a motor housing section of said compressor housing, said electric motor comprising a stator arranged within a stator receiving sleeve of said motor housing section and a rotor surrounded by said stator and arranged on a drive shaft of said electric motor for rotation about an axis of rotation together with said drive shaft, said stator comprising a stator core having a stack of laminations and extending parallel to said axis of rotation from a first front side to a second front side, said stator having windings extending through said stator core and forming end windings arranged in front of said front surfaces, and a channel for guiding at least a portion of said refrigerant entering through said suction inlet along an outer side of said stator before entering said compression unit.

The present invention relates to a fan motor comprising: a housing; a vane hub received in the housing; an insulator mounted inside the vane hub to insulate a stator comprising a stator core and a stator coil wound on the stator core; and a lower bracket coupled to the insulator, wherein a plurality of power line lead-out holes are formed in the lower bracket so as to allow a power line extending from the stator coil to pass therethrough, and a plurality of air holes are formed in the circumferential direction between the respective power line lead-out holes so as to allow air to be suctioned toward the stator. Accordingly, a flow channel of air to for cooling a stator can be formed inside a stator slot, and thus cooling of the stator can be facilitated.

An electric motor assembly includes an outer housing with two sides open, an impeller provided in the outer housing, an inner housing disposed concentrically in the outer housing and spaced apart from the impeller, a stator provided in the inner housing, a rotor rotatably disposed in the stator, a first air flow path through which air flows in an axial direction between the inner housing and the outer housing based on rotation of the impeller, and a second air flow path through which air is joined with the air of the first air flow path via an inside of the inner housing and a gap between the impeller and the inner housing based on rotation of the impeller. Accordingly, cooling of the stator can be facilitated by the air flow paths.

A slinger for an electric motor broadly includes a hub and a wheel. The motor includes a housing in which a stator and rotor are at least partly housed. The motor also includes a rotatable output shaft projecting upwardly through a shaft opening in the housing. The hub is fixedly attachable to the output shaft of the motor so that the slinger rotates with the output shaft. The wheel is configured to divert liquid radially away from the shaft opening. The wheel includes a wheel plate and a plurality of radially extending blades cooperatively forming a series of passages extending radially outward relative to the shaft opening, when the hub is attached to the output shaft. The wheel plate is supported by the hub so as to be positioned above the housing when the hub is attached to the output shaft. The blades present radially inboard ends intersecting the hub.

An aircraft turbine engine includes a gas generator and a fan arranged upstream from the gas generator and configured to generate a main gas flow, one portion of which flows in a flow path of the gas generator to form a primary flow, and another portion of which flows in a flow path around the gas generator to form a secondary flow. The gas generator includes a low-pressure compressor that includes a rotor driving the fan. The turbine engine further includes an electric machine. The electric machine includes a rotor rotated by the rotor of the low-pressure compressor, and a stator extending around the rotor of the electric machine and configured to be cooled by the primary flow.