An information handling system, may include a processor, a memory, and a power source; and a blower fan system including: a cylindrical bearing including a cylindrical hollow receiving portion extending from a top of the cylindrical bearing to the bottom of the cylindrical bearing; a cylindrical main shaft rotatably coupled in the cylindrical hollow receiving portion of the cylindrical bearing including a shaft pass-through hollow portion extending from a top of the cylindrical main shaft to the bottom of the cylindrical main shaft to form a pass-through hole; a set of fan blades mechanically coupled to the cylindrical main shaft having a set of magnets; an electromagnet to drive rotation of the set of fan blades; and a fan support rod passing through the cylindrical bearing and cylindrical main shaft at the shaft pass-through hollow portion and mechanically supporting the fan within a base chassis of the information handling system.

Fan modules and motors are disclosed. The fan motor includes a bearing holder having a first bearing holder end and a second bearing holder end. The bearing holder has a first section with a first diameter that is smaller than diameters of the first bearing holder end and the second bearing holder end. The motor further includes a first bearing retained by the bearing holder at the first bearing holder end, and a second bearing retained by the bearing holder at the second bearing holder end. The motor further includes a shaft retained by the first bearing and the second bearing, and a stator surrounding the first section of the bearing holder.

The invention relates to a bearing arrangement designed as a fixed/floating bearing for a rotor of a fan, having a bearing tube, a compression spring, a shaft arranged coaxially with respect to the bearing tube, and two identically formed ball bearings arranged between the bearing tube and the shaft, each ball bearing having an inner ring and an outer ring, wherein multiple different fit zones are formed axially along the bearing tube, wherein, in a first axial fit zone, one of the ball bearings as a fixed bearing is attached by its inner ring on the shaft and its outer ring is fixed with a press fit on a continuous, shoulder-free portion of the bearing tube and, in a second axial fit zone, another of the ball bearings as a floating bearing is attached by its inner ring to the shaft and its outer ring is axially displaceably arranged with a clearance fit on a continuous, shoulder-free portion of the bearing tube, wherein the compression spring is arranged in a third axial fit zone and, exerting a preload against the outer rings of the ball bearings, is positioned axially between the ball bearings and is designed to eliminate bearing play of the floating bearing.

The disclosure relates to a high-speed radial fan and to a rotor assembly (10) for a high-speed radial fan, comprising a bearing tube (20) which is axially open in the interior and in which a shaft (40) carrying a fan wheel (30) is mounted with a rotor (50), wherein the rotor (50) of the rotor assembly (10) is mounted in a cylindrical separating can (3).

A fan motor includes a shroud, a rotating shaft that is disposed inside the shroud and includes a first support portion, a second support portion, and a permanent magnet mounting portion disposed between the first support portion and the second support portion, an impeller disposed at a first end portion of the rotating shaft, an air bearing that is disposed adjacent to the impeller and defines an air gap facing the first support portion, a permanent magnet disposed at the permanent magnet mounting portion between the first end portion and a second end portion of the rotating shaft opposite to the first end portion in the axial direction, and a ball bearing disposed at the second end portion of the rotating shaft and configured to rotatably support the second support portion.

A destratification fan assembly of an industrial environment includes a support frame fixable to the ceiling of the industrial environment, a blade group rotatable about a main axis (X-X) and an electric motor group supporting the blade group and supported by the support frame. The electric motor group includes a drive shaft having a blade end to which the blade group is solidly connected, an electric motor operatively connected to the drive shaft to guide it in rotation, and an electronic command device of the electric motor for commanding the electric motor. In some embodiments, the electric motor includes a rotor and a stator, wherein the rotor is of the external rotor type.

The preferred embodiments of the present invention provide two advantageous features, which are especially beneficial in combination, but which can be advantageously and beneficially employed independently of one another: (1) firstly, a self-cooling motor bearing system; and (2) secondly, a self-lubricating motor bearing system. In the preferred embodiments, one or both of these two advantageous features are integrated inside an electric motor (e.g., within the electric motor's enclosure housing) in such a manner as to greatly enhance bearing operating conditions (e.g., maintaining adequate bearing lubrication and/or bearing operating temperature) without the use of external lubrication units and/or external cooling units.

A radial fan (1) is provided with a motor (2) and a fan housing, an outer part (4) and an inner part (5) that form a spiral-like pressure chamber (D). A pressure connector (33) which forms an outlet (44) of the radial fan (1) is arranged on the outer part. The fan housing is equipped with a fan wheel (3) which is arranged on a shaft (7) connected to the motor (2), wherein an annular flow divider (8) which surrounds the fan wheel (3) is arranged adjacently to the fan wheel (3) in a radial direction. The flow divider together with the fan housing forming a diffuser (9), which transitions directly into the pressure chamber (D), about the fan wheel (3).

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 ceiling fan including a retention system and method of redundantly retaining a ceiling fan can include a ceiling fan motor assembly including a hollow motor shaft at least partially surrounded by a motor housing. A retainer plate is provided at the bottom of the motor housing including an opening. A retainer rod extends through the opening in the retainer plate and secures to the retainer plate. A support cable couples to the retainer rod to suspend the retainer plate from a structure, wherein the retainer plate is configured to redundantly retainer the ceiling fan.