The present embodiments relate to an air distribution apparatus for distributing conditioned airflow from a roof mounted air conditioner to the inside of a vehicle, which includes an inlet port adapted to receive the conditioned airflow from the roof mounted air conditioner. An outlet port, which is disposed adjacent to each longitudinal end of the apparatus, delivers conditioned airflow to the vehicle. An internal supply duct is adapted to evenly split the conditioned airflow to the outlet ports.

An air handling system for a heating, ventilation, and air conditioning system of a motor vehicle includes a conduit configured to convey air from the air handling system to a vent of the air handling system. A control door is rotatably disposed in the conduit. The control door selectively rotates between a first position and a second position. The first position blocks passage of the air flowing through the conduit. The second position blocks passage of the air flowing through a first portion of the conduit and allows the air to flow through a second portion of the conduit. A control feature is disposed in the second portion of the conduit to control at least one of a volumetric flow rate and a pressure of the air flowing through the second portion.

The present embodiments relate to an air distribution apparatus for distributing conditioned airflow from a roof mounted air conditioner to the inside of a vehicle, which includes an inlet port adapted to receive the conditioned airflow from the roof mounted air conditioner. An outlet port, which is disposed adjacent to each longitudinal end of the apparatus, delivers conditioned airflow to the vehicle. An internal supply duct is adapted to evenly split the conditioned airflow to the outlet ports.

An on-vehicle air conditioner includes a suction port disposed on a ceiling of a vehicle cabin to suction air within the vehicle cabin, a door discharge port disposed at an upper end of a door opening portion located on a wall face of the vehicle to discharge air downward, and an upper duct configured to guide to the door discharge port the air suctioned by the suction port.

A vehicle includes an airflow generator configured to generate an airflow directed from the upper side to the lower side inside a vehicle cabin of the vehicle. The airflow generator generates the airflow such that the airflow directed from the upper side to the lower side does not hit a passenger inside the vehicle cabin.

A safety ventilation device for vehicles or other applications has a housing with one or more openings covered by a hinged flap with the flaps interconnected by a connecting element. A spring is attached to the connecting element or otherwise to the flaps such that in a first position the spring keeps the flaps open and air can pass through the openings. In a second position, upon the application of force to the flaps, such as airflow caused by a moving vehicle, the spring compresses, and the flaps close. The housing of the device includes a protrusion at the top and a channel at the bottom to facilitate an interference fit between a window and a window or door frame.

The invention is applicable to the technical field of Air-Conditioning systems for automobiles and all vehicles. Current heating, ventilating and air conditioning systems in automobiles attempt to blow air directedly at occupants and do not circulate and return air effectively before recirculating within the cabin. Further, existing systems create undesirable air stratification and redistribute air borane contaminants causing occupant fatigue and discomfort. This invention solves all these issues by using a new air diffuser design, strategic airflow patterns, and a ducted return air system. This invention provides a thermal envelope of comfort and allows airflow rates that capture more contaminants. The system additionally allows control of cabin pressurization so hot or cold outside air does not leak into the cabin unnecessarily. Additionally, the invention provides for devices to be incorporated that remove, reduce or eliminate the spread of virus and bacteria.

A heating ventilation and air conditioning (HVAC) system may effectively provide and/or substantially maintain adjacent thermal zones that have different temperatures and/or humidities from one another. The HVAC system may include a duct network including zonal ducts each having a zonal duct exit configured to create aerodynamic profiles that result in a thermal zone. A thermal zone may be characterized by a volume having a temperature and/or humidity which may differ from an adjacent thermal zone, such that a temperature and/or humidity gradient exists at a thermal zone boundary between adjacent thermal zones, and such that diffusion of the temperature and/or humidity between the adjacent thermal zones is aerodynamically inhibited, or otherwise minimized.

A ventilation system for a vehicle interior has an air guide for guiding air into the vehicle interior, an ionization device for ionizing the air in the air guide, an air outlet for transferring the air from the air guide into the vehicle interior, and a deflecting device in the air outlet, designed to produce an electric and/or magnetic field, for deflecting the ionized air.

A system for controlling an airflow supplied to a cabin of a work vehicle may include a housing defining a mixing chamber and a recirculating chamber isolated from the mixing chamber. The mixing chamber is configured to receive fresh air via a fresh air inlet and recirculated air via a first recirculated air inlet, with the fresh air being mixed with the recirculated air within the mixing chamber to create a fresh/recirculated air mixture that is supplied through a mixed air outlet. The recirculating chamber is configured to receive recirculated air via a second recirculated air inlet and supply the recirculated air through a recirculated air outlet. Additionally, the system may include a gate movable relative to the first recirculated air inlet to adjust an amount of recirculated air supplied to the mixing chamber, and an actuator configured to actuate the gate relative to the first recirculated air inlet.