An air-conditioning apparatus that conditions introduced air includes an ultraviolet sterilizer that emits ultraviolet ray to the air. The ultraviolet sterilizer includes a sterilizing light screen forming unit that forms a screen-shaped sterilizing light screen based on the emitted ultraviolet ray.

The present inventive concept relates to an air treatment device adapted to treat air in a confined space. The air treatment device comprises a device body having a central axis, the device body comprising a supporting structure being substantially transverse to the central axis and a side section being substantially parallel to the central axis. The air treatment device further comprises an air treatment section arranged in the device, an ionizing arrangement, a fan arrangement, and a filter extending in a first direction being parallel to the central axis, wherein the filter comprises an upper end and a lower end in the first direction, wherein the ionizing arrangement and the fan arrangement are arranged between the upper and lower end.

An air conditioner including a housing including a suction panel; a fan disposed inside the housing and configured to generate an air flow which is sucked into the housing through the suction panel to flow in a first direction from upstream to downstream, the suction panel being perpendicular to the first direction; and an electrostatic precipitator disposed inside the housing and including a discharge electrode configured to receive a voltage and to generate ions toward the suction panel, and an upstream electrode disposed upstream of the discharge electrode with respect to the first direction, grounded to form an electric field with the discharge electrode, and disposed between the discharge electrode and the suction panel, wherein at least a portion of the ions generated from the discharge electrode are passed through the suction panel so as to charge aerosols in air outside the housing.

An air conditioner including a housing including a suction panel; a fan disposed inside the housing and configured to generate an air flow which is sucked into the housing through the suction panel to flow in a first direction from upstream to downstream, the suction panel being perpendicular to the first direction; and an electrostatic precipitator disposed inside the housing and including a discharge electrode configured to receive a voltage and to generate ions toward the suction panel, and an upstream electrode disposed upstream of the discharge electrode with respect to the first direction, grounded to form an electric field with the discharge electrode, and disposed between the discharge electrode and the suction panel, wherein at least a portion of the ions generated from the discharge electrode are passed through the suction panel so as to charge aerosols in air outside the housing.

Provided are an air purification device (100) and an air conditioner (1000). The air purification device (100) includes a housing (1), a filter module (2), and a plurality of power supply elements (3). The housing (1) has an accommodation cavity (11). The filter module (2) is disposed within the accommodation cavity (11) and has a plurality of electrical connectors (21) provided thereon and arranged at intervals in a first direction. The plurality of power supply elements (3) are arranged at intervals at the housing (1) in the first direction and have a one-to-one correspondence with the plurality of electrical connectors (21). Each of the plurality of power supply elements (3) has a plurality of power supply contacts (31). When the plurality of electrical connectors (21) is in contact with one of the plurality of power supply contacts (31) of each of the plurality of power supply elements (3), the power supply elements (3) is electrically connected to the electrical connectors (21). Therefore, it is possible to allow for diversified mounting positions of the filter module (2) and improve mounting flexibility of the filter module (2). In addition, optimization of an internal structure of each of the air purification device (100) and the air conditioner (1000) having the air purification device (100) are facilitated.

Provided are an air purification device (100) and an air conditioner (1000). The air purification device (100) includes a housing (1), a filter module (2), and a plurality of power supply elements (3). The housing (1) has an accommodation cavity (11). The filter module (2) is disposed within the accommodation cavity (11) and has a plurality of electrical connectors (21) provided thereon and arranged at intervals in a first direction. The plurality of power supply elements (3) are arranged at intervals at the housing (1) in the first direction and have a one-to-one correspondence with the plurality of electrical connectors (21). Each of the plurality of power supply elements (3) has a plurality of power supply contacts (31). When the plurality of electrical connectors (21) is in contact with one of the plurality of power supply contacts (31) of each of the plurality of power supply elements (3), the power supply elements (3) is electrically connected to the electrical connectors (21). Therefore, it is possible to allow for diversified mounting positions of the filter module (2) and improve mounting flexibility of the filter module (2). In addition, optimization of an internal structure of each of the air purification device (100) and the air conditioner (1000) having the air purification device (100) are facilitated.

Provided is an air conditioner. The air conditioner includes a water tank to store water, a visual body disposed over the water tank and formed of a transparent material, a watering housing to draw water stored in the water tank and to spray the drawn water to the visual body, a water level sensor to measure a water level of the water tank in a multi-stage, a top cover assembly disposed over the visual body and having a water supply hole to supply water to the water tank, and a water level display unit disposed beside the water supply hole of the top cover assembly to display a water level measured by the water level sensor in a multi-stage.

An air conditioning apparatus is provided. The air conditioning apparatus includes: a filter configured to have a first conductor layer, an insulating layer having a thickness in the range of 5 nm to 1000 nm, and a second conductor layer which are sequentially stacked, and include a plurality of holes penetrating through the first conductor layer, the insulating layer, and the second conductor layer; a fan assembly configured to suck air from the outside and provide the sucked air to the filter; a power supply device configured to provide alternating current power between the first conductor layer and the second conductor layer; and a processor configured to control the power supply device to selectively vary a frequency or a voltage magnitude of the alternating current power provided to the filter.

An air-conditioning apparatus that conditions introduced air includes an ultraviolet sterilizer that emits ultraviolet ray to the air. The ultraviolet sterilizer includes a sterilizing light screen forming unit that forms a screen-shaped sterilizing light screen based on the emitted ultraviolet ray.

A filtering device is provided. The filtering device includes two or more perforated plates opposing each other for allowing a fluid to flow through opposing perforating plates along a bulk fluid flow direction; the filtering device further includes a block sandwiched in-between the opposing perforated plates; the filtering device further includes one or more microwave emitting connector(s) arranged for provision of the block with microwaves at a frequency within the range between 1 GHz and 20 GHz, transverse to said intended fluid flow direction; wherein the block is provided with one or more fluid permeable pads disposed in-between the opposing perforated plates, said pads being formed from one or more materials with a dielectric constant within the range between 1 and 100.