An air purifier for use in a vehicle having louvered air vents includes a housing having rear and front air flow openings that are aligned with and in air flow communication with each other. A louver clip is attached to the housing adjacent the rear air flow opening. The louver clip is configured to engage a louver on an air vent in the vehicle to hold the housing in place in front of the air vent. The air purifier includes an annular ultraviolet light bulb having a central air flow opening aligned with the front and rear air flow openings in the housing. An annular ultraviolet reflector at least partially encircles the annular ultraviolet light bulb. The air purifier includes a power source for providing electrical power to the ultraviolet light bulb, and a power switch for turning power on or off to the ultraviolet light bulb.

Various embodiments of the present invention disclosed herein relate to an air cleaner, and may suck outside air and purify and sterilize the outside air, and may perform sterilization of a filter. An embodiment of the invention disclosed herein discloses an air cleaner including a body forming an appearance; a suction unit formed on the body and introduced with outside air; a discharge unit formed on the body and discharging the air introduced through the suction unit; a fan module provided inside the body and forming a flow of air introduced into the suction unit and discharged to the discharge unit; a filter unit provided inside the body to filter the air introduced into the suction unit; and a light source unit provided inside the body and irradiating light toward an inner side surface of the filter unit.

Disclosed embodiments relate to a combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. Disclosed embodiments further include ceiling tiles with a built-in fan and/or LED lighting. The disclosed systems may include one or more UV-C light sources which irradiate contaminants as air flows through the UV-C unit. The UV-C unit is mounted on either a universal mounting mechanism or a mobile support unit to provide mobility to the UV-C unit.

An air purifier comprising a removable particulate or gas filter, an air flow generator, a means for controlling said air flow generator, a first air flow setting with an air filtration air flow speed and a second air flow setting which correlates with sterilisation of an internal surface of the air purifier and/or removable particulate or gas filter. A method for sterilising an internal surface of an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for sterilising an internal surface of an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for sterilising a removable filter in an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for preventing microbial growth on an internal surface of or a removable filter rom an air purifier by activating the air flow generator.

An air purifier comprising a removable particulate or gas filter, an air flow generator, a means for controlling said air flow generator, a first air flow setting with an air filtration air flow speed and a second air flow setting which correlates with sterilisation of an internal surface of the air purifier and/or removable particulate or gas filter. A method for sterilising an internal surface of an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for sterilising an internal surface of an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for sterilising a removable filter in an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for preventing microbial growth on an internal surface of or a removable filter rom an air purifier by activating the air flow generator.

First and second towers may discharge air. An airflow guide or converter may change a direction of the air discharged from the first tower and the second tower by moving a gate inside and outside of at least one of the first or second towers so as to block discharged air flowing forward and selectively facilitate an upward air flow. The airflow converter may include a guide motor to provide a driving force, the gate, which may reciprocate between the inside and the outside of the first and/or second towers; and a board guider connected to the gate to transmit a driving force of the guide motor to the gate as a linear motion force.

The present embodiment may comprise: a housing that have a suction port, a space formed therein, and a discharge port formed in an upper portion thereof; a purification unit and a blowing unit accommodated in the space; a discharge guide that is disposed in an upper portion of the housing and discharges blown air to the discharge port; a tilting mechanism that is connected to the discharge guide to tilt the discharge guide; and a lifting and lowering mechanism that lifts and lowers the tilting mechanism.

The present application provides an air purifier, which includes: a casing, a fan, a filter, and a formaldehyde removal module; the filter is in a cylindrical shape, and the formaldehyde removal module includes an inner filter, the formaldehyde removal plate is in a honeycomb shape, the inner filter screen cylinder is placed in the filter. The air purifier of the present application provides the formaldehyde removal plate at the bottom of the inner filter screen cylinder to achieve the effect of removing formaldehyde in the air. The formaldehyde removal plate is arranged in a honeycomb shape to reduce the wind resistance of the inner filter and the air resistance, thereby reducing the speed and noise of the fan.

The present application provides an air purifier, which includes: a casing, a fan, a filter, and a formaldehyde removal module; the filter is in a cylindrical shape, and the formaldehyde removal module includes an inner filter, the formaldehyde removal plate is in a honeycomb shape, the inner filter screen cylinder is placed in the filter. The air purifier of the present application provides the formaldehyde removal plate at the bottom of the inner filter screen cylinder to achieve the effect of removing formaldehyde in the air. The formaldehyde removal plate is arranged in a honeycomb shape to reduce the wind resistance of the inner filter and the air resistance, thereby reducing the speed and noise of the fan.

A portable air purifier comprising a removable filter, an air flow generator, a temperature sensor, a humidity sensor, a processor for processing input from the temperature sensor and the humidity sensor, and means for activating said air flow generator from a stand-by configuration based on input from both said temperature and humidity sensors and a method for activating an air flow generator in a portable air purifier in stand-by mode, by obtaining information as to ambient temperature from a temperature sensor, obtaining information as to ambient humidity from a humidity sensor, determining likelihood of microbial growth on a removable filter in the purifier and, where conditions are such that microbial growth is of a defined quantum, activating the air flow generator.