An air purifier (100) includes a detection unit (130) and a control unit (110). The detection unit (130) periodically detects environment information. The environment information indicates information relating to an environment around the air purifier (100). The control unit (110) determines whether or not the environment information satisfies a specific condition a plurality of times during the specific time period (Ts) corresponding to an event within a prescribed period (Ta). In a case where the control unit (110) determines that the environment information satisfies the specific condition a plurality of times, the control unit switches a mode from a learning mode to an implementation mode. In the implementation mode, in a case where the environment information meets a trigger during the specific time period, the control unit (110) performs event operational control.

An air purifier (100) includes a detection unit (130) and a control unit (110). The detection unit (130) periodically detects environment information. The environment information indicates information relating to an environment around the air purifier (100). The control unit (110) determines whether or not the environment information satisfies a specific condition a plurality of times during the specific time period (Ts) corresponding to an event within a prescribed period (Ta). In a case where the control unit (110) determines that the environment information satisfies the specific condition a plurality of times, the control unit switches a mode from a learning mode to an implementation mode. In the implementation mode, in a case where the environment information meets a trigger during the specific time period, the control unit (110) performs event operational control.

A minute-particle trapping device includes: an air duct having a duct space through which air containing minute particles flows; a first filter disposed to block the duct space in the air duct and having a honeycomb structure to trap the minute particles contained in the air; and a second filter disposed in the air duct at a position downstream from the first filter in an air flow direction to block the duct space, the second filter being formed from a nonwoven fabric folded in a wave pattern to trap minute particles contained in the air that has passed through the first filter.

A breathing light assembly of an air purifier includes a front panel, a cover, a breathing light, a body cover, and a reflective strip. The cover includes a light transmission panel and a curved surface and is mounted to the front panel. The breathing light is mounted to the curved surface and faces the light transmission panel. The body cover cooperatively defines an optical channel with the cover. A surface of the body cover includes a light emitting zone within the optical channel. The light emitting zone faces the breathing light across the optical channel. Light emitted by the breathing light passes through the light transmission panel to the light emitting zone. The reflective strip is mounted on the light emitting zone and positioned at an end of the optical channel. The reflective strip reflects the light emitted by the breathing light.

A humidification and air cleaning apparatus including a water tank; a transparent body forming at least a portion of the water tank; a watering housing disposed in the water tank to spray water stored in the water tank; a nozzle disposed in the watering housing to spray the pumped water; an air wash inlet disposed in the water tank to receive external air into the water tank; and an air wash inlet disposed in the water tank to discharge internal air out of the water tank. During rotation, the sprayed water forms a certain trajectory and collides with an inner side surface of the visual body. Air flowing outside the water tank forms an outer main stream before passing the air wash inlet. Air passing the air wash inlet forms an inner main stream inside the water tank, which passes the trajectory of sprayed water to the discharge port.

Methods, systems, and devices provided in accordance with various embodiments are generally related to the field of thermal management systems for buildings (or volumes in general), such as cold storage, food processing, or other buildings that have areas that are kept below freezing. Embodiments generally pertain to the management of temperature and humidity within these spaces. Some embodiments include system for the management of moisture and temperature inside cold spaces. Some embodiments include a heat and mass transfer exchanger, such as a direct constant gas liquid heat and mass transfer exchanger. Examples of such heat and mass transfer exchangers generally include wet scrubbers. Embodiments also generally include a series of ducts, pipes, heat exchangers, dampers, and/or valves that may allow the system to provide useful temperature and relative humidity levels to one or more spaces or volumes.

Methods, systems, and devices provided in accordance with various embodiments are generally related to the field of thermal management systems for buildings (or volumes in general), such as cold storage, food processing, or other buildings that have areas that are kept below freezing. Embodiments generally pertain to the management of temperature and humidity within these spaces. Some embodiments include system for the management of moisture and temperature inside cold spaces. Some embodiments include a heat and mass transfer exchanger, such as a direct constant gas liquid heat and mass transfer exchanger. Examples of such heat and mass transfer exchangers generally include wet scrubbers. Embodiments also generally include a series of ducts, pipes, heat exchangers, dampers, and/or valves that may allow the system to provide useful temperature and relative humidity levels to one or more spaces or volumes.

An outdoor air cleaning system includes a partition surrounding a purification space to isolate the purification space from an external space and having at least one opening connecting the purification space to the external space, an air purifying device configured to supply purified air to the purification space, and a controller configured to control the air purifying device. An openness level defined as an area ratio of the opening with respect to a surface area of the partition is about 10% or more and about 50% or less.

A multiuse home station includes a vacuum cleaner docking station, a vacuum cleaner charging station, and a room air cleaner unit, wherein the room air unit uses a portion of the vacuum cleaner docking station.

A method and device for controlling operation of sensor in air purifier are provided, to solve technical problem that operating life of sensor is shortened when air quality is detected by sensor in real-time manner since sensor needs to operate whether air quality changes or not. The method for controlling operation of sensor in air purifier includes: obtaining current time period; determining operating mode of sensor based on current time period, and controlling, if time period is daytime period, the sensor to operate continuously for first preset operating period and stop operating for first preset power-down period to perform a periodic control for first preset number of cycles per hour; and controlling, if the time period is nighttime period, the sensor to operate continuously for second preset operating period and stopping operating for second preset power-down period to perform periodic control for second preset number of cycles per hour.