A carbon dioxide concentration control device (10) is provided with a control unit (15) that controls an absorption amount of carbon dioxide of a carbon dioxide absorbent (16) per unit hour, and a regeneration control unit (14) that generates the carbon dioxide absorbent (16), and a second drive energy supply unit (13) which is different from a first drive energy supply unit (11) that supplies power to the control unit (15) supplies power to the regeneration control unit (14), and thus a carbon dioxide concentration in a space is controlled to be an appropriate value for long periods of time.

An apparatus is provided for regenerating an odor absorbent in a motor vehicle HVAC system. That apparatus includes a regeneration blower assembly that is connected between a heater plenum and a fresh air inlet duct of the HVAC system. Air is drawn from the passenger cabin of the motor vehicle through the heater plenum where that air is warmed. The warmed air is directed through the odor absorbent to remove odors and regenerate the odor absorbent. The warm air and the odors entrained therein is discharged through a fresh air inlet of the HVAC system.

A utility vehicle, cab ventilation system which includes a fan and a main filter located in the cab roof section with an upstream pre-filter mounted on the exterior of the cab roof. The pre-filter rotates about an axis parallel to air flow and centrifugally forces matter outward, effectively reducing material build up and frequency of service to the main filter within the roof section. The pre-filter can be built into a new cab ventilation system or provided in a module, for adding to existing cab ventilation systems.

A cabin air filter device for cleaning air entering a vehicle is provided. The cabin air filter device comprises a cabin air filter constructed from a washable and reusable material with the cabin air filter having an original shape. The cabin air filter is capable of being positioned within the a/c and heating system of the vehicle and is capable of being washed while substantially maintaining the original shape.

The present disclosure is directed to a novel redesigned or retrofitted cabin air filtration system utilizing an ultraviolet light, radiation, or an energy matrix membrane and related technology to eliminate toxins such as viruses, bacteria, mold, fungi, rickettsia, protozoa, etc. from the air system in a vehicle, such as an automobile, marine vehicle airplane, etc., thereby improving the current cabin air filter functionality and providing a sterile air distribution environment throughout the cabin of the vehicle or small area.

A direct air capture system for capturing, containing, and transporting airborne matter includes a filter assembly, a particle container configured to receive airborne matter loosened from the filter assembly, a means for cowling venting configured to utilize vacuum pressure to transport the airborne matter. The system also includes an electric motor assembly having a motor drive, a drive gear, and a drive shaft, as well as at least one scrubbing brush configured to loosen airborne matter from the filter assembly.

A vehicle air conditioning system includes: an air conditioning duct through which air can flow; at least one air conditioning device provided in the air conditioning duct, the at least one air conditioning device including an adsorption portion having an adsorbent configured to adsorb and separate an adsorption target substance, and a heating means configured to heat the adsorption portion; and a control unit configured to control a flow velocity of air flowing through the air conditioning duct and heating of the adsorption portion. The control unit repeatedly executes an adsorption mode in which the heating means of the air conditioning device is not activated, and a regeneration mode in which the heating means of the air conditioning device is activated, and executes the regeneration mode at start-up.

A vehicle-mounted air component adjusting system 1 includes: a conditioning device having an adsorption portion and a heating means; a duct 3 including the conditioning device therein and allowing the air to flow therethrough, the duct 3 having a vehicle interior flow path 30 for introducing the air that has passed through the conditioning device into the vehicle interior, and a vehicle exterior flow path 31 for discharging the air that has passed through the conditioning device to the vehicle exterior, and wherein, when an outlet of the vehicle exterior flow path 31 is viewed along an extending direction 31E of the vehicle exterior flow path 31 from an upstream side in a flow direction of the air 10, the outlet of the vehicle exterior flow path 31 is provided at a position displaced from an intake port 110 for the vehicle-mounted air conditioning system 11.

An air conditioning system includes: an air conditioning duct through which air can flow; at least one air conditioning device provided in the air conditioning duct, the at least one air conditioning device being configured to adsorb and desorb an adsorption target substance; and a control unit configured to control a flow rate of the air flowing through the air conditioning duct and the air conditioning device. The control unit repeatedly executes a cycle of executing the regeneration mode in which the air conditioning device is controlled to desorb the adsorption target substance followed by the adsorption mode in which the air conditioning device is controlled to adsorb the adsorption target substance.