An antimicrobial, injection molded air register for use in an air distribution system to direct airflow from ductwork into a passenger cabin of a vehicle or into an enclosed space within a residential structure is provided. The air register includes a perforated cover configured to cover an outlet end of the ductwork and a plurality of injection molded components supported by the cover to direct air flow into the passenger cabin. Each of the components includes a surface layer in fluid communication with the airflow and is made of a molded material which absorbs airborne liquid droplets containing infectious, disease-causing pathogens moving with the airflow. The molded material includes antimicrobial agents disbursed throughout each of the surface layers to reduce the number of pathogens contained within droplets absorbed by the surface layers.

A vehicle cabin filter assembly comprising a housing and a plurality of filter modules mounted to the housing. The filter modules comprise a first filter module, a second filter module positioned downstream of the first filter module, and a third filter module positioned downstream of the second filter module. Each filter module comprises a particulate filter element, and at least one of the filter modules comprises a gas filter element. The second filter module has a separation efficiency higher than the first filter module, and the third filter module has a separation efficiency higher than the second filter module.

Systems and methods for integrating a building management system communicatively coupled to a security subsystem via a communication network, in which the building management system determines occupancy data, with a heating, ventilation, and air conditioning subsystem that includes a scrubber unit communicatively coupled to the building management system via the communication network. The scrubber unit includes a contaminant filter that sorbs air contaminants from a surrounding environment when an elevated pressure differential is introduced across the contaminant filter; an inlet sensor that determines sensor data indicative of contaminant level present in return air received by the scrubber unit from an internal portion of the building; and scrubber control circuitry that selectively instructs the scrubber unit to operate in one of multiple regeneration modes based at least in part on the occupancy data and the sensor data to facilitate improving filtering efficiency provided by the contaminant filter during subsequent operation.

An air purification device for a vehicle includes: a sorption device provided with a sorbent; an air intake duct for sucking air in a vehicle cabin; an outlet-side three-way valve connected to the sorption device; an air supply duct for blowing air into the cabin; an exhaust duct for discharging air to outside of the cabin; a blower; a heater; and a controller. The controller selectively executes a purification mode in which air in the cabin is sent into the sorption device at a purification temperature, and purified air from which moisture and carbon dioxide have been removed by the sorbent is blown into the cabin, and a first regeneration mode in which air heated to a first regeneration temperature is sent into the sorption device, and exhaust air containing moisture and carbon dioxide released from the sorbent is discharged to the outside of the cabin.

A vehicle includes a vehicle cabin, a filter configured to allow air blown toward the vehicle cabin to pass through the filter while adsorbing at least a portion of a substance contained in the air, a sensor configured to detect the state of the air passing through the filter, and a control device configured to output information relating to maintenance of the filter based on the result of detection performed by the sensor.

A gas detection and purification device can be placed in an in-car space and includes a housing, a purification module, a gas-guiding unit, and a gas detection module. The housing has a gas inlet and a gas outlet. A gas channel is between the gas inlet and the gas outlet. The purification module is disposed in the gas channel to filter the gas guided into the gas channel. The gas-guiding unit is disposed in the gas channel and at one side of the purification module. The gas-guiding unit guides the gas into the device from the gas inlet, guides the gas to pass through the purification module for performing filtering and purifying, and discharges the gas out from the gas outlet. The gas detection module is disposed in the gas channel to detect the gas guided into the housing to obtain gas detection data.

Systems and methods that utilize both UVA and UVC lamps to clean and disinfect a cabin filter of a vehicle, thereby preventing the cabin filter from becoming fouled for an extended period of time. By performing both gas filtration and cabin filter disinfection functions, these systems and methods mitigate: (1) the pressure drop (or flow reduction) experienced; (2) the smell breakthrough when the gas adsorbent becomes saturated; and (3) the presence of microbial growth. This is accomplished by the sequential application of UVC and UVA radiation to the cabin filter, with the UVC radiation being applied for a period of time upon vehicle startup to neutralize bacteria and fungus present in the cabin filter and the UVA radiation subsequently being applied continuously to filter the gas flowing through the cabin filter. A photocatalyst may be added to the cabin filter itself to enhance disinfection and gas filtration.

A filter medium includes: a functional layer; and two nonwoven layers. The functional layer is arranged between the nonwoven layers. The functional layer includes antiallergenic substances. The antiallergenic substances comprise a pourable or free-flowing solid. In an embodiment, the solid comprises a granulate. In an embodiment, the antiallergenic substances include polyphenols or fruit acids.

A contaminant scrubber of a heating, ventilation, and air conditioning (HVAC) system includes a housing having a first side wall and a second side wall opposite to the first side wall. The contaminant scrubber also includes a first compartment formed within the housing, a second compartment formed within the housing and having a cartridge set removably disposed therein, and a third compartment formed within the housing, where the second compartment is positioned between the first compartment and the third compartment. The contaminant scrubber also includes a first cross-member beam extending along a first bottom end of the first compartment and a second top end of the second compartment, where the first cross-member beam extends from the first side wall of the housing to the second side wall of the housing. The contaminant scrubber also includes a second cross-member beam extending along a second bottom end of the second compartment and a third top end of the third compartment, wherein the second cross-member beam extends from the first side wall of the housing to the second side wall of the housing.

An air purification device includes: a carbon dioxide removal device configured to sorb and remove carbon dioxide contained in air; an air supply duct connected to a first outlet of the carbon dioxide removal device and having a blowing opening 17a for flowing out purified air from which carbon dioxide has been removed by the carbon dioxide removal device 12 into a vehicle cabin; and an exhaust duct connected to a second outlet of the carbon dioxide removal device and having an exhaust opening 18a for discharging the carbon dioxide sorbed by the carbon dioxide removal device to outside of the vehicle cabin 3, wherein the air supply duct is mounted to a front seat of the vehicle so as to be movable vertically with the blowing opening facing forward.