The present disclosure provides a volcano type aromatherapy humidifier, including a humidifier main unit body, a control circuit board arranged inside the humidifier main unit body, an atomization module, and a fan blade assembly, wherein a mist ring spray outlet for spraying a vortex mist ring and a flame spray port for forming a similar flame spray shape are formed in an upper part of the humidifier main unit body; the flame spray port is arranged circumferentially on an outer side of the mist ring spray outlet; the fan blade assembly includes a driving motor and a fan blade connected to an output shaft of the driving motor; and the fan blade is arranged close to an inner side of the mist ring spray outlet and is configured to extrude mist out of the mist ring spray outlet during instantaneous rotation at a high speed to form a vortex mist ring. In an actual application process, spraying of a vortex mist ring and flame spray can be better achieved through operation states of the mist ring spray outlet, the flame spray port, and the fan blade assembly, and the use experience and the ornamenting value are high.

An HVAC air freshener comprises a cylindrical housing having at least one opening in the wall of the housing along the length of the housing, the housing adapted to be inserted through an opening in a planar portion of an HVAC plenum or ductwork, a fastener encircling and attached to the housing near one end of the housing and adapted to attach to an exterior planar surface of the plenum or ductwork, and a fragrance cartridge inserted into the housing. The fragrance from the fragrance cartridge escapes from the cartridge through the housing opening and into the plenum or ductwork.

An HVAC air freshener comprises a cylindrical housing having at least one opening in the wall of the housing along the length of the housing, the housing adapted to be inserted through an opening in a planar portion of an HVAC plenum or ductwork, a fastener encircling and attached to the housing near one end of the housing and adapted to attach to an exterior planar surface of the plenum or ductwork, and a fragrance cartridge inserted into the housing. The fragrance from the fragrance cartridge escapes from the cartridge through the housing opening and into the plenum or ductwork.

A computer implemented method, a computerized system and a computer program product for selective scent dispensing. The computer implemented method comprising: detecting an event, wherein the event is associated with a person entering a predetermined physical area; in response to the detection of the event, determining, by a processor, a scent for the event; and applying, by a dispenser, the scent on the predetermined physical area.

An automatically moving floor treatment appliance has a floor treatment element for acting on a surface to be treated, and a control device for controlling the floor treatment element. To increase the area of application of the floor treatment appliance, the control device is embodied to automatically control the floor treatment element as a function of a measuring result from an air parameter sensor in such a way that a floor treatment of the surface to be treated occurs using the floor treatment element and/or to automatically control the floor treatment element as a function of environmental data stored in an external storage device and relating to an air quality.

The aroma-dispensing HVAC filter is a scented air filter capable of diffusing a pleasant odor throughout a building. The filter media is enclosed in an easily-opened, protective holder.

A refill for holding at least two compositions comprises a container including a body and first and second compositions disposed within the body such that the first and second compositions are substantially separated and the second composition is disposed above the first composition. The refill further includes a tube disposed within the body of the container such that the tube contains the first and second compositions, wherein the tube has an inner diameter and an outer diameter. Still further, the refill includes a wick disposed within the tube, wherein the wick contains the first and second compositions and has a diameter that is smaller than the inner diameter of the tube to create a gap between the wick and the tube is smaller than the inner diameter of the tube to create a gap between the wick and the tube.

A method of controlling an air freshener device for a passenger compartment of a vehicle is disclosed. The method has an effect of creating various environments in the passenger compartment, using anion perfume modules, which are coupled to air ducts so as to communicate therewith or are mounted to air discharge ports of a vehicular air cleaning device, and which generate perfume having negative polarity () characteristics using electric current applied thereto so that the perfume is mixed with purified air discharged from the air discharge ports and is directed toward a passenger, having positive polarity (+) characteristics, in the passenger compartment.

An air purge method in a vehicle is provided. The air purge method comprises starting a vehicle ventilation device in response to ventilation instruction; determining a current air purge status based on an operation time of the ventilation device; and indicating the current air purge status via an air purge indication device.

An air purifier (10) uses an air purifier filter unit (12) and a sensor (26) for sensing the matter to be filtered by the air purifier filter unit. By monitoring (18) the performance of the air purifier combined with information about the air purifier filter unit, it is possible to determine a volume of the space in which the air purifier (10) is deployed.