An air conditioning system for motor vehicles is designed to independently cool or heat a plurality of vehicle room regions and to independently adjust discharged air volume levels in the respective vehicle room regions. The air conditioning system includes a control unit configured to, when one of the discharged air volume levels in the respective vehicle room regions is set to a maximum air volume level, dependently control the other discharged air volume level to the maximum air volume level while entering into a maximum air volume control mode.

The invention concerns a control device (1) for a heating and/or ventilation and/or air conditioning installation of a motor vehicle, the installation comprising an air treatment unit (9) comprising air outlets intended to open into a zone (ZG, ZD) of the passenger compartment of the vehicle, including at least first and second air outlets, and at least first (21) and second (23, 25) members for mixing the air flow. According to the invention, the device (1) comprises a user interface (5) comprising at least first (51) and second (53) control members, and a control circuit (7) for receiving, from each control member (51, 53), an input signal with its own temperature setpoint, and for delivering separate control signals for controlling the first and second mixing members (21, 23, 25).

The present invention relates to an in-vehicle air conditioning outlet state indicator and a vehicle, including: an air conditioning outlet of which an air outlet direction is changeable; and an interior trim panel provided with an indication unit displaying, in a working state, an indication mark used for indicating a current air outlet direction of the air conditioning outlet, in which when the air outlet direction of the air conditioning outlet changes, the indication unit also changes, or when the indication mark changes, the air outlet direction of the air conditioning outlet also changes.

In a first aspect, a vehicle HVAC system includes: a housing that defines at least first and second air conduits to a vehicle interior compartment; and at least first and second heat rods that each traverses the first and second air conduits, wherein a first positive temperature coefficient along a length of the first heat rod is greater at the first air conduit than at the second air conduit, and wherein a second positive temperature coefficient along a length of the second heat rod is greater at the second air conduit than at the first air conduit.

An apparatus for controlling a direction of discharged air in a vehicle air conditioning system can control a direction of air discharged to a vehicle interior from the vehicle air conditioning system. The apparatus includes a plurality of vent nozzles connected to an air discharge port for discharging air in the vehicle air conditioning system, so as to discharge air to different regions in a vehicle interior space, a plurality of discharge ducts connected between respective different sections of the air discharge port and the respective vent nozzles, and an opening and closing door configured to adjust an opening degree of the air discharge port, for selectively opening the different sections of the air discharge port.

A vehicle having an HVAC system with a particular ventilation housing design and method for making the same are described. The ventilation housing has a common mode door for defrost and floor panels and allows efficient use of components to provide effective operation in bi-level and other modes. In bi-level mode, the mode doors can be operated to form flow path such that floor outlet is virtually on the upstream side of the panel outlet.

An air vent for a vehicle supplies air generated from a Heating, Ventilation, and Air Conditioning (HVAC) system into an interior of the vehicle. The air vent may include: a first supply duct communicated with the HVAC system; a second supply duct communicated with the HVAC system; a vent body communicated with the first supply duct and the second supply duct; a first discharging duct always communicated with the first supply duct through the vent body; a second discharging duct always communicated with the second supply duct through the vent body; and a central discharging duct selectively communicated with the first supply duct or the second supply duct through the vent body.

The invention relates to a ventilation, heating and/or air conditioning device for a passenger compartment of a vehicle, the device having at least one air inlet, at least one air outlet, the device having at least a first heat exchanger, a second heat exchanger and a third heat exchanger, at least a part of the device being separated in a left zone and a right zone by a partition wall. The device includes at least one opening located downstream the third heat exchanger so that at least part of the flow of air present in one of the zones fluidly communicates with the other zone.

An air vent for a vehicle includes a housing provided with an air outlet, a front wing module mounted within the housing and configured to adjust air discharged through the air outlet in left and right directions, a rear wing module mounted within the housing by being spaced apart from the front wing module and configured to adjust air discharged through the air outlet in up and down directions, and a manipulation module connected to the front wing module and to the rear wing module from outside the housing by being spaced apart from the air outlet, and configured to adjust air discharged through the air outlet in left and right or up and down directions.

A vehicle air conditioning device includes an air conditioning case having a plurality of air discharge ports, a cooling heat exchanger and a heating heat exchanger sequentially formed in an air flow path of the air conditioning case, wherein the air discharge ports each have a face vent composed of the center vent and the side vents, a left-right temperature difference reduction means for reducing the temperature difference between a discharge port of the center vent and discharge ports of the side vents by reducing, in a first air conditioning mode, the cross-sectional area of the flow path through which air is discharged to the center vent, and by reducing, in a second air conditioning mode, the cross-sectional area of the flow path through which air is discharged to the side vents.