An air conditioning apparatus for a vehicle includes an air conditioner unit disposed in an air conditioning room of a vehicle and configured in such a manner that ambient air, introduced into the air conditioning room from an outside of the vehicle, is suctioned and blown to an interior of the vehicle by a blower; a damper installed in an opening on an introduction side of the air conditioner unit to selectively allow introduction of one of indoor air flowing from the interior and ambient air; and an internal exhaust grill installed in the interior to fluidly communicate with a space defined by the air conditioner unit and an internal side surface of the air conditioning room, wherein the indoor air in the interior may be discharged to an outside of the vehicle through the internal exhaust grill and the air conditioning room.

An air-treatment system for a confined environment, in particular the cabin of a vehicle, includes: a supply unit including an inlet port, a delivery port, and a purge port, the supply unit being configured for delivering air to said confined environment through the delivery port; and a first filtering device having a first filtration level, and a second filtering device having a second filtration level, each of the first and second filtering devices being arranged in fluid communication with the inlet port of said supply unit at a circuit node. A single flow-control valve determines inlet flow through one or other of the filtering devices.

An air conditioner includes an air conditioning case, a blower fan, and a facing wall portion. The air conditioning case configures an air passage through which air to be blown into an interior flows. The blower fan is disposed inside the air conditioning case. The facing wall portion is disposed on an air flow upstream side of the blower fan to face a suction port of the blower fan. The air conditioning case has a facing surface that faces the facing wall portion and in which through holes are formed. The air conditioning case has a closed space formed therein on an opposite side of the facing surface with respect to the air passage and communicating with the air passage via the through holes. The through holes and the closed space form a resonator having a predetermined resonance frequency.

A roof structure for an agricultural vehicle includes an upper roof assembly and a lower roof assembly connectable to the upper roof assembly. The lower roof assembly or the upper roof assembly includes a ventilation opening for guiding air-conditioned air and a circulation opening for supplying recirculated air. An air-guiding element is arranged between the lower and upper roof assembly. The air-guiding element is further disposed at the circulation opening and the ventilation opening such that a region sealed in relation to an external environment is formed.

A vehicular air conditioning system includes an intake case having an indoor air inlet for introducing an indoor air present in a vehicle interior and an outdoor air inlet for introducing an outdoor air present outside a vehicle, an intake door installed in the intake case to selectively block one of the outdoor air inlet and the indoor air inlet while rotating about a rotation center shaft, and a water blocking part configured to block water flowing into the vehicle interior from the indoor air inlet of the intake case.

An air ventilation device of a vehicle includes: a housing including an air inlet and an air outlet and a cooling core and a heating core disposed between the air inlet and the air outlet; a rear extending flow path extending to the rear of the vehicle, and having a first end connected to the air outlet of the housing and a second end connected to a back seat air vent disposed to face a back seat space; an air collecting flow path directly connecting the rear extending flow path and the air inlet of the housing; and an opening and closing door structure opening and closing air circulation between the rear extending flow path and the air outlet and air circulation between the air collecting flow path and the air inlet.

The present application discloses an air conditioning system for a vehicle and an operating method therefor, which relates to the technical field of vehicle air conditioners. The system includes a motor (5), an operating dial (3) and internal and external-circulation ventilation doors (1, 2), and the motor (5) drives the operating dial (3) to drive the internal and external-circulation ventilation doors (1, 2) to rotate to achieve the purpose of different internal and external air-intake ratios. The operating method includes: receiving a pulse signal, wherein the pulse signal comprises a preset direction of rotation and a preset step count of rotation of the motor (5); and driving the motor (5) to rotate in the preset direction by the preset step count, to drive the operating dial (3) to rotate, to cause the internal-circulation ventilation door (1) to rotate to a first preset angle, and cause the external-circulation ventilation door (2) to rotate to a second preset angle, so that an air-intake ratio of an internal air-intake volume and an external air-intake volume of the air conditioning system is a preset first ratio. The system and the method can control the ratio of the mixing of the internal air and the external air, to satisfy different usage conditions, to achieve the purpose of improving the fuel-oil economic efficiency of the entire vehicle, the endurance mileage of new-energy vehicles and the comfort of the air-conditioner blown air.

An air conditioning unit for a vehicle includes: an air conditioning case defining an in-case passage in which air flows to a vehicle interior; a cooler arranged in the air conditioning case and configured to cool the air flowing in the in-case passage; a blower that includes a blower motor and an impeller configured to be rotated by the blower motor and generate an air flow in the in-case passage; and a cooling passage portion defining a motor cooling passage in which air flows to cool the blower motor. The blower is arranged downstream of the cooler with respect to the air flow in the air conditioning case. The motor cooling passage includes a passage inlet located downstream of the impeller with respect to the air flow in the in-case passage, and a passage outlet located upstream of the impeller with respect to the air flow in the in-case passage.

The present invention relates to an air conditioner for a vehicle and, more particularly, to an air conditioner for a vehicle which is capable of miniaturization by integrally forming an air conditioning module and a cooling module so as to increase space utilization in an engine room and further enhance manufacturability.

A smart multi-modal vehicular air filtration management system including a first filter element and a second filter element disposed in a fresh air housing, wherein the fresh air housing has an inlet and an outlet. Additionally, a third filter element is provided which is disposed in a cabin housing, the cabin housing having one or more inlet. A fluid channel arranged between the fresh air and cabin housing. Finally, a diverter is included which is disposed near an outlet of the fresh air housing, wherein the diverter is configured to cause air to flow through the fresh air housing selectively through one or both of the first filter element and the second filter element.