A system for cooling an engine is provided. The system uses a rim driven fan having an electric motor in a frame of the fan to move air through a radiator toward the outside of the vehicle. The electric motor may have the rotor and the stator axially or radially aligned. The plurality of fan blades extends radially inward of a support which is formed integral with or attached to the rotor. Rim driven fans are also provided.

A fan aspirator, and related systems and methods, utilizes a plurality of motors to drive a fan of an aspirator to deliver inflation fluid to an inflatable device. The fan aspirator includes a plurality of motors and a respective plurality of drive gears configured to drive a pinion gear to which the fan is mounted within a central chamber of the housing of fan aspirator.

The invention concerns an impeller (1a, 1b, 1c, 1d, 1e, 1f) of a motor vehicle fan comprising: a cylindrical ring (2) having a center (P), blades (3) extending from the cylindrical ring (2) and toward the center (P), each blade (3) having two radially opposite ends (4, 5), referred to as the blade root end (4) and the blade tip end (5), the blade root end (4) being directed toward the center (P) and the blade tip end (5) being secured to the cylindrical ring (2), characterized in that all the blade root ends (4) are free or linked together by a central hub (20) of reduced diameter.

An electric propulsion system for an aircraft includes a nacelle and an electric machine. The electric machine includes a stator positioned in the nacelle, and a rotor and fan assembly positioned in a primary flow path through the nacelle. The rotor and fan assembly includes a cylindrical fan shroud, a plurality of rotor magnets positioned on an outer surface of the fan shroud, and a fan hub mounted on a central support shaft via one or more bearings. A plurality of fan blades extend between an inner surface of the fan shroud and an outer surface of the fan hub. The rotor magnets may be loaded in compression in a radial direction when the rotor and fan assembly is at rest. The fan blades may be pre-stressed in a radial direction when the rotor and fan assembly is at rest.

A technique facilitates movement of fluids with reduced component loading by utilizing opposed axial forces. The system for moving fluid may be in the form of a gas compressor, liquid pump, or other device able to pump or otherwise move fluid from one location to another. According to an embodiment, the system includes rotor sections which are combined with pumping features. The rotor sections are disposed radially between corresponding inner and outer stator sections which may be powered to cause relative rotation of inner and outer rotor sections in opposite directions. The rotors and corresponding pumping features are configured to move fluid in opposed axial directions toward an outlet section so as to balance axial forces and thus reduce component loading, e.g. thrust bearing loading.

A fan assembly includes a fan cover. The fan cover is provided with a vane assembly and is fixed by a rotating shaft, which includes blades and magnetic vanes arranged along its outer contour. The coils are evenly arranged along the fan cover. The magnetic rotor blade and the alternating magnetic field generated by the coils can drive the blades to rotate, and the rotation speed can be adjusted by changing the speed of the alternating magnetic field. The coils are fixedly installed in the outer cover of the fan, and the vane assembly is only installed by the rotating shaft, which can easily disassemble from the vane assembly. The structure is simple and has higher reliability. So, it is not easily damaged, and has a longer service life. The fan assembly can be completely waterproof, so that the product can be used in high humidity and even water.

A propulsion device includes: a duct in which a flow path extending in a direction of an axis; a fan which is provided with a) an outer peripheral ring formed in an annular shape surrounding the axis and installed to be relatively rotatable around the axis with respect to the duct, b) a plurality of fan blades arranged at intervals in a circumferential direction such that each blade is extended from the outer peripheral ring toward the inside of the flow path, and c) an inner peripheral ring formed in an annular shape being connected radially inner end portions of the plurality of fan blades and in which an air flow passage is formed so that air flows therethrough in the direction of the axis; and a motor which drives the fan to rotate around the axis.

The disclosure provides a luminous fan including a main body, a light guide member and a light source. The main body includes a fan frame and a plurality of propellers, and the plurality of propellers are rotatably mounted on the fan frame. The light guide member includes an outer light guide ring and a plurality of inner light guide rings, the plurality of inner light guide rings are mounted on the fan frame, the plurality of inner light guide rings each have an air channel, the plurality of propellers are respectively located in the air channels, the outer light guide ring is mounted on the plurality of inner light guide rings and surrounds the plurality of inner light guide rings, and the outer light guide ring is exposed from the luminous fan. The light source is disposed between the outer light guide ring and the inner light guide ring.

A motor-integrated fan sucks air from a suction port and blows out the sucked air from a blow-out port. The motor-integrated fan includes a shaft part that is provided at a center of a rotational axis; a rotation part that is rotated about the shaft part; an outer peripheral part that is provided on an outer periphery of the shaft part; a motor that rotates the rotation part; a heat generating part that generates heat due to an operation of the motor; and a cooling unit that cools the heat generating part with cooling air. The cooling unit includes an air intake port that takes the cooling air in, an air discharge port that discharges the cooling air, and a cooling flow channel that leads to the air discharge port from the air intake port via the heat generating part.

An improved radiator mounting and cooling system for use in automobiles allows multiple components to be incorporated into the same unit, limiting the need for accessories to be mounted to inner fenders or firewall. A circulating vortex of air is pulled through a front grill and vortex tubes disposed through sides of the radiator system to improve cooling efficiency. An outer shroud protects interior components and creates a sealed core cavity allowing air to only enter through vortex tubes and front grill and exit through a rear grill. A self-circulating cooling system provides additional cooling of coolant. A fan system pulls around 5000 CFM of air through the core cavity. An optional secondary coolant pumping system allows coolant to be pumped when needed. A control system controls activation of the fan system and secondary coolant pumping system based on signals from sensors.