An air cleaner includes: a blower having an outlet formed on an upper side thereof; a circulator disposed over the blower and configured to control a wind direction of air flowing upwardly through the outlet; and a mover coupled to the circulator and configured to change an arrangement of the circulator, wherein the circulator includes: a lower cover having a lower plate coupled to the mover, and having an inlet formed around the lower plate; an upper cover disposed over the lower cover and having an outlet; a blower fan rotatably disposed between the lower cover and the upper cover, and having a circular inlet formed on a lower side and an annular outlet formed on an upper side; and a motor disposed on an upper side of the lower plate, and rotating the blower fan.

An air cleaner includes a first blowing device having a first inlet and a first outlet, a second blowing device disposed above the first blowing device and having a second inlet, and a partition plate disposed between the first outlet and the second blowing device. The first blowing device includes a case forming the first inlet and opened in an upper side, a discharge guide device disposed in the opened upper side of the case and forming the first outlet, a first fan disposed inside the case and forming an air flow from the first inlet to the first outlet, and a splitter disposed between the partition plate and a discharge guide device and extending upward from the discharge guide device in a radial direction of the discharge guide device to separate an air flow discharged from the first outlet and guide the air flow in the radially outward direction.

A face mask having a positive air flow by use of an attached portable air purification unit. The device is used to filter and purify inhaled air, making it easier for individuals to comfortably wear a face mask for public health and safety. An outtake filter inhibits contaminated air from being expelled by the mask wearer. The portable air purifier is powered by means of rechargeable battery power using a USB connector, allowing static or dynamic use.

A negative air filtration system and a method of operating a negative air filtration system are provided. The negative air filtration system includes a housing, a pre-filter, a HEPA filter, and a fan assembly. The housing including an inlet and an outlet. The pre-filter is disposed within the housing, downstream of the inlet. The HEPA filter is disposed within the housing, downstream of the pre-filter. The fan assembly is disposed within the housing, downstream of the pre-filter. The fan assembly is in airflow communication with the pre-filter and the HEPA filter. The fan assembly is configured to generate a negative pressure across the pre-filter. The fan assembly may include a constant torque motor. The negative air filtration system is designed to have reduced complexity and increased reliability when compared to existing negative air filtration systems.

Systems, apparatus and methods for disinfection of airflow. An apparatus for disinfecting air-conditioned airflow in a confined space includes: a modular housing; and a disinfection chamber enclosed within the housing. The disinfection chamber includes a plurality of disinfection sheets. Each disinfection sheet comprises a plurality of ultraviolet (UV) light sources. The airflow is configured to be routed along a serpentine pathway within the housing to expose microorganisms in the airflow to far UV-C light emitted by the UV light sources for an extended and optimal duration.

A filtering module includes at least one reinforced aluminum side plate and at least one filtering mesh. The reinforced aluminum side plate surrounds to form a rectangular frame. The reinforced aluminum side plate includes a top plate, a connecting plate, a base plate and a positioning plate. The connecting plate is connected between the top plate and the base plate. The base plate and the top plate are substantially parallel with each other. The base plate has a treated surface away from the top plate and configured to abut against a fan filtering unit. The top plate has a supporting surface away from the base plate. The positioning plate is disposed perpendicularly on the supporting plate and aligns with the connecting plate. The filtering mesh is at least partially supported on the supporting surface and at least partially abuts against the positioning plate.

Disclosed is an electrostatic induction-type air filtration dust-collecting apparatus and method, whereby a film-type electrostatic filter having high efficiency and a low pressure loss is used as a primary filter so as to enhance air permeability to reduce the pressure loss and to enhance a dust-removing performance of the filter and the primary filter is utilized as an electrostatic inductor so that the performance of a secondary nonwoven fabric filter charged with static electricity can be enhanced and the enhanced performance can be maintained and thus the efficiency of collecting dust including ultrafine particles in air can be increased.

An air cleaner for a vehicle includes a case having an air inlet pipe and an air outlet pipe. A cover is removably attached to the case for covering an open top portion of the case. With the cover attached to the case an interior of the air cleaner defines a flow passage directed through the air cleaner from the air inlet pipe to the air outlet pipe. A filter element is received in the interior and is arranged over the flow passage. The flow passage immediately downstream of the filter element includes an elbow-shaped section for redirecting airflow from the filter element toward the air outlet pipe. The elbow-shaped section is provided with at least one first guide rib shaped correspondingly to the elbow-shaped section. The flow passage upstream of the air outlet pipe defines a branching section formed as an acoustic resonator for reducing air intake noise.

The present invention provides an air purifier that purifies, disinfect and decontaminate convention air flow by using UV rays. Because the UV rays emitted by the UV light sources are contained within the air purifier, use of the air purifier is safe in that a nearby person can avoid exposure to hazardous UV radiation. Adjustment of operating conditions, such as the UV intensity and wavelength and air speed, is programmable via a remote controller, a smart switch, a smart device, a wireless communication device, a smart home control appliance, a sensing device, and/or a built-in module, which renders the air purifier a smart appliance that may automatically and optimally suits to a user's need based on the user's habit and other physical parameters. Installation and removal of the air purifier, as well as cleaning and replacement of any part thereof, are simple and convenient, as a result of the clever design.

A room air purifier including upper and lower portions with the lower portion including a detachable floor panel. The upper portion and the floor panel may respectively include integrated resilient upper and lower gaskets configured so that with an air filter removably installed in the room air purifier and with the floor panel attached to a lower housing piece of the lower portion of the room air purifier, the upper portion of the room air purifier, and the floor panel, apply pressure to the air filter through the upper and lower gaskets.