A blower includes a rotor blade rotatable about a central axis extending in an axial direction, a motor that rotates the rotor blade, and a housing that surrounds the rotor blade and the motor. The housing includes stator blades extending in a forward rotation direction of the rotor blade toward an axially lower side of the blower, a porous wall including multiple holes arranged in both the radial direction and in the circumferential direction, and a cylinder portion extending in the axial direction and radially outward of the porous wall. The hole penetrates the porous wall through upper to lower surfaces thereof. The stator blade is axially below the rotor blade. An axially upper end portion of the porous wall is between an axially lower end portion of the rotor blade and an axially upper end portion of the stator blade.

A system which is composed of a blower unit for a powered air purifying respirator and an electrically powered accessory. The blower unit has a blower device and a battery for powering the blower device. And the accessory is equipped with a power connector. The blower unit provides a power outlet for connection with the power connector. The power connector has a plug. Furthermore the power connector has an unplug lever for retracting the plug for unplugging. The unplug lever and the plug are connected by a pivot joint that forms a pivot axis. The unplug lever forms a handle arm and a counter arm that extend away from the pivot joint in opposite directions.

The application provides a dust collecting mechanism, a car air purifier and a fan, and relates to the technical field of air purification. The dust collecting mechanism includes a generator assembly including a generator holder, a generator plate and a generator filament, the generator plate and the generator filament being arranged in a spaced and staggered manner inside the generator holder; a collector assembly including a collector holder, a repeller plate and a collector plate, the repeller plate and the collector plate being arranged in a spaced and staggered manner inside the collector holder. The generator holder is detachably connected with the collector holder, and the collector plate is connected and conducted with the generator filament through magnetic adsorption, so that they can be connected to the power supply together, thereby enabling wireless conduction between the collector assembly and the generator assembly, simplifying the circuit structure.

There is provided a radiator fan configured to introduce outside air into a radiator in front of an engine. The radiator fan includes: a propeller disposed behind the radiator; a fan motor configured to drive the propeller to rotate; and a fan shroud covering the propeller from behind. The fan shroud is formed with a plurality of hoods whose exhaust air ports are directed in any directions in a range from a lateral direction to a downward direction.

A fan blade cleaning assembly for cleaning a ceiling fan blade includes a sleeve that is elongated for sliding onto a ceiling fan blade. A plurality of brushes is each coupled to the sleeve and each of the brushes is positioned within the sleeve. In this way each of the brushes can clean the ceiling fan blade when the sleeve is slid thereon. Moreover, the plurality of brushes is strategically positioned to clean a top surface and a bottom surface of the ceiling fan blade. A hose is fluidly coupled to the sleeve and the hose can be fluidly coupled to a vacuum source to facilitate the vacuum source to remove the dust and debris from the sleeve.

A fan system and a computing system with the fan system are disclosed. The fan system includes a fan module. The fan module includes a housing configured to retain a fan and a motor to rotate the fan. The housing includes an air inlet aperture on an air inlet side of the housing and an air outlet aperture on an air outlet side of the housing. The fan system further includes an outlet fan guard coupled to the fan module on the air outlet side of the housing. The outlet fan guard includes at least one flap rotatable between a closed position, covering the air outlet aperture of the housing, and an open position, uncovering the air outlet aperture of the housing. The outlet fan guard further includes at least one spring urging the at least one flap into the closed position.

An adjustable stand fan includes a fan casing, a switch box, a lifting pipe, and a large chassis. The fan casing is fixed with an adjusting seat and is installed on the switch box through bolts. The switch box is mounted on a top of the lifting pipe that is vertically installed on a top of the large chassis. The lifting pipe includes a fixed end. External threads are on a bottom of the fixed end of the lifting pipe. A threaded hole matched with the fixed end of the lifting pipe is on a top center of the large chassis. A pitch angle adjusting mechanism is disposed in a joint between the adjusting seat and the switch box.

A fan assembly that has a fan hub having a plurality of blades extending radially therefrom and having a variable pitch and a controller in communication with the fan assembly to reposition a pitch of the plurality of blades. The controller establishes a variable maximum pitch of the plurality of blades based on an ambient temperature.

A motor assembly for driving a pump (e.g., liquid pump) includes an electric motor with an output shaft. A motor frame houses the electric motor so that the output shaft protrudes from an end of the motor frame. A plate assembly is coupleable about the output shaft to the end of the motor frame. The please assembly has a cavity that houses motor drive electronics. The plate assembly further defines a duct that extends between a central opening and one or more openings on an outer radial wall of the plate assembly. A fan is coupled to the output shaft so that the plate assembly is disposed between the fan and the motor frame. Rotation of the output shaft by the electric motor rotates the fan, causing air to flow through the duct. Air flow through the duct inhibits heat transfer between the electric motor and the motor drive electronics.

This invention relates to a ceiling mounted air circulating apparatus comprising, in combination: a motor; an essentially centrally located radial or axial air impeller; air guiding means; optional airflow enhancement by means of air amplification means; optional centrally located wiring path from an electrical power source to a wiring enclosure suitable for hanging a lighting fixture or chandelier; and decorative embellishments, ail of which are arranged to blend with the architectural style of a space in a manner similar to a decorative ceiling medallion, the plariform of which, when viewed from below may be circular, rectangular, or polygonal. Optionally, the apparatus of the present invention may embody any of the following; heating, cooling, filtration means, positive ion generation means, and/or air sterilization means.