A personal service unit (PSU) includes a housing, a dial, and a flow control ring. The dial is rotatable about the housing. The housing includes a longitudinal axis therethrough and a first end and a second end opposite the first end. The dial includes a helical first portion along an interior wall of the dial. The flow control ring includes a helical second portion along an exterior wall of the flow control ring. The helical second portion rotatably mates with the helical first portion and rotation of the dial in a first direction moves the flow control ring in a first direction along the longitudinal axis to cause a first adjustment in airflow past the flow control ring and rotation of the flow control ring in an opposite direction moves the flow control ring in an opposite direction to cause a second adjustment in airflow past the flow control ring.

A barrier door for a protective enclosure includes a lower section and an upper section operably coupled with the lower section, and a ventilation system disposed within the lower section. The ventilation system includes one or more blowers and a plenum. The ventilation system is configured to direct air one or more of into or out of the protective enclosure.

A roof structure for an agricultural vehicle includes an upper roof assembly, a lower roof assembly, and an air-conditioning chamber formed in the lower roof assembly. The upper roof assembly is connectable to the lower roof assembly to surround the air-conditioning chamber. An inlet chamber and an outlet chamber for air-conditioned air are provided such that the inlet chamber and the outlet chamber between the lower roof assembly and the upper roof assembly include chambers separated from each other. The structure also includes a circulation opening for supplying recirculated air arranged at the inlet chamber and an air-guiding element arranged in the inlet chamber, at the circulation opening, and at the air-conditioning chamber. A region is sealed in relation to an external environment.

The present disclosure provides a power transmission device in which stress is reduced and a vehicle air-conditioning device. An air-conditioning device has an inside/outside air door. A power transmission device drives the inside/outside air door. The power transmission device has a motor, a gear train, and a cam mechanism. A first gear of the gear train provides a rotatable member. A plurality of lock mechanisms is provided, which stops a rotation of the first gear at one end and/or the other end in a rotation direction of the first gear. The plurality of lock mechanisms provide a plurality of contacts between the first gear and a stationary link cover.

An apparatus and method for controlling air conditioning of a vehicle are provided. The apparatus includes a sensing device that measures a pollutant concentration and a carbon dioxide concentration in the vehicle using at least one sensor. A controller determines an in-vehicle air condition based on the pollutant concentration and the carbon dioxide concentration, and automatically switches an in-vehicle air circulation mode based on a determination result.

A ventilation device for a cabin of a vehicle, the ventilation device includes a temperature-control circuit in which a fluid circulates for heat transfer; an ambient heat exchanger via which heat is exchanged between the temperature-control circuit and a cabin environment; a cabin heat exchanger via which heat is exchanged between the temperature-control circuit and an air flow provided for ventilating the cabin; one or more liquid channels connecting the ambient heat exchanger to the cabin heat exchanger; an air supply system for directing air to the cabin heat exchanger to supply the passengers in the cabin, and an air conveyor device for conveying supply air; and a distance between the air conveyor device and the passenger is greater than a distance between the cabin heat exchanger and the passenger.

An air distribution assembly for a recreational vehicle may include a frame mounted within an opening of the recreational vehicle and a baffle positioned therein to sealing divide an air handling chamber into an air supply side and an air return side. The baffle may include mounting flanges for rigidly connecting the baffle to the inside surface of the frame.

There is provided a vehicle comprising a thermal conditioning system and a cabin. The thermal conditioning system comprises a fan (102), a first heat exchanger (104), an outside air duct (112), a cabin air duct (114), a sensor, and a control unit (122). The fan is configured to generate a flow of air. The first heat exchanger is arranged to transfer heat to the flow of air. The thermal conditioning system is configured to be operated in a first mode and a second mode. In the first mode, the fan rotates in a first direction to direct the flow of air along a first flow path. In the second mode, the fan rotates in a second direction opposite to the first direction to direct the flow of air along a second flow path. The sensor is arranged to provide a signal representative of a temperature of a part of the vehicle. The control unit is configured to switch the thermal conditioning system between the first mode and the second mode based on the signal.

A roof-mounted unit for an air conditioner of a vehicle wherein the roof-mounted unit includes a top cover and a chassis jointed to the top cover in a sealed manner, in which the top cover includes an upper housing and an upper foam shell attached to an inner side of the upper housing, and the chassis includes a base and a lower foam shell attached to an inner side of the base, wherein the upper foam shell, at a joint part thereof, sequentially comprises, from an outer side to an inner side, a first upper projection, a first upper recess and a second upper projection; the lower foam shell, at a joint part thereof, sequentially comprises, from an outer side to an inner side, a first lower recess and a first lower projection; and when the top cover is jointed to the chassis in a sealed manner, the first upper projection is jointed to the first lower recess in a matching manner, the first upper recess is jointed to the first lower projection in a matching manner, and the second upper projection is attached to an inner side of the first lower projection, thereby achieving a sealing joint between the upper foam shell and the lower foam shell.

The present invention relates to an air conditioner for a vehicle, which can remarkably improve resistance against an air flow in an air passageway, thereby enhancing efficiency. The air conditioner for a vehicle includes: a case having an air inlet, an air outlet, and an air passageway formed therein; a blower unit for blowing air to the air inlet; and a cooling means and a heating means disposed in the air passageway of the case in an air flow direction in order, wherein the air outlet of the case includes a floor outlet and vent outlets, the floor outlet and the vent outlets are arranged below the heating means in a height direction, and the floor outlet is arranged within a range of the width of the heating means.