Cabin air control system with single adsorption unit

A cabin air control system for a vehicle, the cabin air control system comprising:

• an air conditioning device having a positive pressure region in communication with a cabin, and a negative pressure region in selective communication with the cabin and/or outside environment via a circulation control device;
• and
• an adsorption device comprising a single adsorption assembly and a switching device configured to switch the adsorption device between a standby mode, an adsorption mode and a regeneration mode,
• wherein the adsorption assembly comprises:
• a housing;
• a heater disposed in the housing;
• and
• an adsorption unit disposed in the housing and downstream of the heater, the adsorption unit being configured to adsorb moisture and/or carbon dioxide and/or harmful gas, the heater being configured to heat air before being delivered to the adsorption unit when activated, and the heated air being used to regenerate the adsorption unit, and
• the switching device comprises:
• a first port in communication with an intake passage of the adsorption assembly;
• a second port in communication with an outlet passage of the adsorption assembly;
• a third port in communication with an intake pipe connected to the positive pressure region;
• a fourth port in communication with a return pipe connected to the negative pressure region;
• and
• a fifth port in communication with an exhaust pipe.