Abstract: An air purifying system includes first, second, and third air purifiers controlled independently and a docking station having first, second, and third supports configured to support and charge the first, second, and third air purifiers. The docking station has a vertical backbone, and the first, second, and third supports horizontally extend from the backbone. At least the second and third air purifiers are configured to be separated from the docking station and include handles to assist a user in transporting the second and third air purifiers to separate rooms or indoor spaces.

Abstract: An air purifying system may include a main air purifier placed in an indoor space, a handheld air purifier mounted on the main air purifier, and an air quality sensor IOT device that communicates with the main air purifier. The air quality sensor IOT device may be fixed in an outdoor space adjacent to the indoor space, or may be carried by a user to measure air quality data while the user travels. The main air purifier may automatically operate based on air quality data received from the air quality sensor IOT device.

Abstract: An air purifying system may include at least two air purifiers configured to operate independently and a docking station to support the at least two air purifiers. The docking station may include a backbone extending in a vertical direction and at least two supports corresponding to and supporting the at least two air purifiers. At least one air purifier may have a display configured to operate according to a plurality of modes. When the air purifier having the display is docked on the docking station, the display may indicate overall operating information of the entire air purifying system. When the air purifier having the display is separated from the docking station, the display may indicate individual operating information of the air purifier having the display.

Abstract: An air purifier includes a filter, a fan to suction air through the filter, a first case configured to cover the filter and the fan, and a second case overlapping with the first case. The first and second cases may be moveable in a vertical direction such that the second case may be raised to lengthen the air purifier and the first case may be raised to expose the filter for replacement. The second case may be provided outside of the first case and have a side discharge grill and a top discharge grill, which may each be selectively opened and closed.