Disclosed is an air purification system (10) comprising an air purifier apparatus (50) for removing a pollutant from air, a sensor (21, 23) for sensing a concentration of the air pollutant and a scent release apparatus (40) responsive to a scent release signal, wherein the air purification system further comprises a processor (31) adapted to monitor the pollutant concentration from sensor data received from the sensor and to generate the scent release signal upon the monitored pollutant concentration falling below a defined threshold. Also disclosed is a method of generating a scented atmosphere in a room housing an air purification apparatus (50) for removing a pollutant from the air in the room.

Disclosed are a humidifier and a household appliance. The humidifier includes a housing, a fan, a water absorption net assembly and a time record assembly. The housing is provided with an air inlet and an air outlet, an air duct communicating with the air inlet and the air outlet, and a water storage tank communicating with the air duct are formed inside the housing. The fan is provided in the air duct. The water absorption net assembly is at least partially extending into the water storage tank and at least partially extending into the air duct. The time record assembly is installed in the housing and configured to record a use time of the water absorption net assembly.

Disclosed are a humidifier and a household appliance. The humidifier includes a housing, a fan, a water absorption net assembly and a time record assembly. The housing is provided with an air inlet and an air outlet, an air duct communicating with the air inlet and the air outlet, and a water storage tank communicating with the air duct are formed inside the housing. The fan is provided in the air duct. The water absorption net assembly is at least partially extending into the water storage tank and at least partially extending into the air duct. The time record assembly is installed in the housing and configured to record a use time of the water absorption net assembly.

Environmental characteristics of habitable environments (e.g., hotel or motel rooms, spas, resorts, cruise boat cabins, offices, hospitals and/or homes, apartments or residences) are controlled to eliminate, reduce or ameliorate adverse or harmful aspects and introduce, increase or enhance beneficial aspects in order to improve a wellness or sense of wellbeing provided via the environments. Control of intensity and wavelength distribution of passive and active Illumination addresses various issues, symptoms or syndromes, for instance to maintain a circadian rhythm or cycle, adjust for jet lag or season affective disorder, etc. Air quality and attributes are controlled. Scent(s) may be dispersed. Hypoallergenic items (e.g., bedding, linens) may be used. Water quality is controlled. Noise is reduced and sounds (e.g., masking, music, natural) may be provided. Passive and active pathogen controls are employed. Controls are provided for the occupant and/or facility personnel, as is instruction, and surveys, including assessing wellness.

Methods and apparatus for vaporizing liquid into the surrounding environment, including directing liquid from a liquid source through an inverse-opal wicking structure to a vaporization port where the vaporization port is formed by a through-hole in a structure connecting a first side of the structure to a second side, with all dimensions ranging from 10 um to 300 um, that is in fluid communication with the liquid source and the surrounding environment so that fluid is transported through the vaporization port between the first and the second side. The methods and apparatus includes plurality of heating elements that may be individually and/or selectively addressable by at least three electrode leads.

A method for screening an antimicrobial agent which is capable of controlling microorganisms causing offensive odor in an air-conditioning system and a method for removing offensive odor in an air-conditioning system are provided. The method for screening an antimicrobial agent and the method for removing offensive odor in an air-conditioning system may be used for various purposes of industrial application. For example, they may be used to develop a novel antimicrobial agent capable of inhibiting the growth of the microorganisms or to develop an air freshener for removing offensive odor by elucidating the chemical properties of the metabolites of the microorganisms. In addition, they may be used to fundamentally remove the cause of offensive odor by providing an air-conditioning system with an environment where the microorganisms may not live.

A humidifier includes a first housing, a second housing, a water atomization module, an essential oil delivery module, and an essential oil container. The first housing includes an outer wall including a recess. The second housing is fixedly embedded in an upper part of the recess. The water atomization module is disposed in the first housing. The water atomization module includes a first container, a water passage, and an ultrasonic atomizer. The water flows out of the first container, enters the water passage into the ultrasonic atomizer, and is atomized to produce mist. The essential oil delivery module is disposed in the second housing. The essential oil container is connected to the essential oil delivery module. The essential oil delivery module is configured to transfer essential oil from the essential oil container to the water passage so that the essential oil and the water are atomized together.

A humidifier includes a first housing, a second housing, a water atomization module, an essential oil delivery module, and an essential oil container. The first housing includes an outer wall including a recess. The second housing is fixedly embedded in an upper part of the recess. The water atomization module is disposed in the first housing. The water atomization module includes a first container, a water passage, and an ultrasonic atomizer. The water flows out of the first container, enters the water passage into the ultrasonic atomizer, and is atomized to produce mist. The essential oil delivery module is disposed in the second housing. The essential oil container is connected to the essential oil delivery module. The essential oil delivery module is configured to transfer essential oil from the essential oil container to the water passage so that the essential oil and the water are atomized together.

Methods and apparatus for vaporizing liquid into the surrounding environment, including directing liquid from a liquid source through an inverse-opal wicking structure to a vaporization port where the vaporization port is formed by a through-hole in a structure connecting a first side of the structure to a second side, with all dimensions ranging from 10 um to 300 um, that is in fluid communication with the liquid source and the surrounding environment so that fluid is transported through the vaporization port between the first and the second side. The methods and apparatus includes plurality of heating elements that may be individually and/or selectively addressable by at least three electrode leads.

A wind-direction adjustable air purifier according to an embodiment of the present invention comprises: a housing provided with an air discharge opening formed on one surface thereof; an air guide having a front end disposed in a center of the air discharge opening and a rear end extending toward the other surface of the housing such that the air discharge opening has a ring shape; and a rotation guide coupled to the inside of the housing so as be rotatable in the circumferential direction of the air discharge opening, and supporting the air guide in by the housing, wherein the air guide can be coupled to the rotation guide so as to be rotatable in a direction inclined relative to the air discharge direction of the air discharge opening.