A ceiling fan assembly having a motor assembly with a rotating blade hub, and at least one fan blade mounted to the rotating blade hub with a blade span defined between a tip and a root, and defining an airfoil cross section including a rounded leading edge and a v-shaped trailing edge defining a chord therebetween. The blade comprising a pressure side surface and a suction side surface extending between the leading and trailing edges and including a hollow interior and including a tip opening at the tip and a root opening at the root for accessing the hollow interior. The at least one fan blade includes a thickness to chord ratio of less than about 15%.

A fan frame with an improved heat dissipation performance includes a frame body, a plurality of stationary blades, and a central base. The frame body defines a flow channel, the central base is arranged within the flow channel and divides the flow channel into flowing zones. Each of the flowing zone includes a high-pressure zone and a low-pressure zone. The central base defines first slot, second slot and receiving groove between the first slot and the second slot, the first slot communicates the high-pressure zone and the receiving groove, the second slot communicates the low-pressure zone and the receiving groove.

A ceiling fan assembly including a stator assembly having a non-rotating motor shaft and stator slidably and non-rotationally coupled to the non-rotating motor shaft, a rotor assembly, a first bearing slidably mounted to the non-rotating motor shaft and rotatably coupling the rotor assembly to the stator assembly, and a first spacer located between the first bearing and the stator assembly to fix the sliding location of the first bearing relative to the stator along the non-rotating motor shaft.

A ceiling fan comprising a motor having a rotating blade hub and a downrod mount. The ceiling fan also has multiple blades mounted to the rotating blade hub. The downrod has an upper end configured to mount to a structure and a lower end with a mount motor. The ceiling fan also has multiple studs provided in one of the downrod mount or the motor mount and corresponding openings provided in the other of the downrod mount or the motor mount. The studs are received within the openings to aid in securing the downrod to the motor assembly.

The invention relates to an electric media gap machine (10) for a compressor and/or a turbine, in particular for a turbocharger of an internal combustion engine, including a shaft (5) which is rotatably mounted in a housing (6) and on which a rotor (11) is arranged in a rotationally fixed manner, a stator (12) which is fixed to the housing and which has at least one multi-phase drive coil (16) for generating a drive magnetic field and multiple stator teeth (15) that protrude radially inward, and a device (17) which is fixed to the stator for optimizing the flow of a medium flowing through the media gap machine. The device (17) has a cover cap (18) which covers at least the rotor (11) upstream thereof, wherein the cover cap (18) is adjoined by an inner sleeve (19) which surrounds the rotor (11) completely in the circumferential direction and at least partly in the axial direction. The device (17) has an outer sleeve (23) which is arranged coaxially to the inner sleeve (19) such that the only flow path for the medium between the inner sleeve (19) and the outer sleeve (23) is formed solely through the stator (12) of the media gap machine.

A pump device is provided. In the pump device, in a first wall portion of an insulator configured to surround an inner partition wall portion arranged on an inner peripheral side of a stator core and to prevent a winding of a driving coil from collapsing, there is provided a first notch cut out from an end surface on a Z2 direction side of the first wall portion toward a Z1 direction side. And, in a second wall portion of an insulator configured to surround an inner partition wall portion and to prevent a winding of a driving coil from collapsing, there is provided a second notch cut out from an end surface on a Z1 direction side of the second wall portion toward a Z2 direction side.

A ceiling fan assembly an upper motor housing, a lower motor housing, and a magnet seat formed in a portion of the upper and lower housing configured to seat a rotor comprising one or more magnets and mount the rotor to the upper and lower motor housings.

A ducted fan that includes a housing with a cylindrical or substantially cylindrical shape, a ring motor in the housing, and fan blades extending radially inward from an inner circumferential surface of the ring motor. The housing includes a first housing that covers a first side in an axial direction of the ring motor and a second housing that covers a second side in the axial direction of the ring motor. The second housing includes through holes penetrating the second housing at a portion on the second side in the axial direction with respect to the ring motor. The housing includes an outer circumferential wall including first and second wall portions located in outer circumferential portions of the first and second housings. The outer circumferential wall includes opening portions defined by a gap between the first and second wall portions.

A cross-flow fan includes a cylindrical impeller having an annularly designed first magnetically effective core disposed at a first end, an annularly designed second magnetically effective core disposed at a second end, a plurality of vanes arranged between the first magnetically effective core and the second magnetically effective core, a first stator, which is a bearing and drive stator, and which interacts with the first magnetically effective core as a first electromagnetic rotary drive, and a second stator, which is at least a bearing stator, and with which the second magnetically effective core is capable of being magnetically levitated without contact with respect to the second stator. The impeller is magnetically driven without contact by the first and the second stators and magnetically levitated without contact with respect to the first stator and the second stator.