Disclosed is a ventilation module for improving the efficiency of a vehicle HVAC system. The ventilation module includes a return air duct having an outlet to be coupled to the HVAC system. The ventilation module also includes a fresh air duct, a heat exchanger, and first and second doors. The first and second doors connect the return and fresh air ducts upstream and downstream of the heat exchanger. By selectively opening or closing the first and second doors, the ventilation module provides the HVAC system with desired return, fresh or mixed air through the outlet of the return air duct.

A cooling apparatus includes: a water circuit; a ventilation heat exchanger that heats cooling water by heat exchange with air discharged to outside; a motor generator cooling unit; a motor bypass circuit that bypasses the motor generator cooling unit; and a flow rate control unit. When a temperature of the cooling water flowing between the ventilation heat exchanger and a motor flow rate controller is lower than or equal to a temperature of oil circulating inside the motor generator, the flow rate control unit increases a flow rate of the cooling water that flows from the ventilation heat exchanger into the motor bypass circuit.

A heat pump for a vehicle is provided in which the heat pump includes a compressor, an inner heat exchanger, an outer heat exchanger, a first expansion unit, a second expansion unit, an evaporator, an accumulator, a third heat exchanger, a first directional control valve, a second directional control valve, and a dehumidification line, and performs cooling, heating, defrosting, and dehumidifying operations according to the flow of a refrigerant.

Device for regulating and controlling a flow-through and distributing a fluid in a fluid circuit has a housing with ports connecting fluid lines that are connected across a passage aperture with an interior volume of the housing, a valve element disposed in the interior volume of the housing, a drive element for moving the valve element relative to the housing.

An air-conditioning system of a motor vehicle having refrigerant circulation and coolant circulation. Refrigerant circulation comprises a compressor, a refrigerant-coolant heat exchanger operable as condenser/gas cooler for heat transfer between the refrigerant and the coolant, a first expansion element and a first refrigerant-air heat exchanger for conditioning the inflowing air for the passenger compartment. Coolant circulation is developed with a conveying device, a first coolant-air heat exchanger for heating the inflowing air for the passenger compartment, a second coolant-air heat exchanger and the refrigerant-coolant heat exchanger. Refrigerant circulation also includes a second refrigerant-air heat exchanger, operable exclusively as evaporator. Upstream of the second refrigerant-air heat exchanger in the direction of flow of the refrigerant, a second expansion element is disposed. The second expansion element and the second refrigerant-air heat exchanger are disposed within a first flow path. A method for operating the air-conditioning system.

The present invention relates to an air conditioner for a vehicle, which includes a cold air passageway and a warm air passageway, and two blowers disposed in the air passageways, thereby rapidly ventilating the interior of the vehicle using the two blowers.

A motor vehicle air-conditioning device that includes an air inlet channel, an air-conditioning system, an air extraction channel, and a rotary heat exchanger. The air inlet channel has a supply air inlet opening operable to facilitate flow of vehicle exterior air into the air inlet channel. The air-conditioning system has an air supply channel fluidically connected to the air inlet channel. The air extraction channel has a discharge air inlet opening operable to facilitate flow of the vehicle interior air into the air extraction channel and a discharge air outlet opening operable to facilitate discharge of the extracted interior air through the air extraction channel and the discharge air outlet opening. The rotary heat exchanger is operable to, in an operating state thereof, provide a heat exchange between the air inlet channel and the air extraction channel.

It provides an operation part calculating an energy recovered by the heat exchanger in the heat exchanger and energies consumed by the air blower for absorption and the air blower for discharge and determining which of the energy recovered by the heat exchange and the energies consumed by the air blower for absorption and the air blower for discharge is greater, and a control part controlling at least one of the air blower for absorption and the air blower for discharge so that the energy consumed by the air blower for absorption and the air blower for discharge becomes small when the operation part determines that the energy consumed by the air blower for absorption and the air blower for discharge is greater than the energy recovered by the heat exchanger.

The invention relates to a method for supplying air at a controlled temperature to a cabin of a surface vehicle in which at least one air cycle device is used, comprising at least one motorized turbocompressor. The air inlet of the turbine is arranged to receive a compressed airflow from the compressor. At least one exchanger is interposed between the air outlet of the compressor and the air inlet of the turbine. The air inlet of the compressor is arranged to receive air at a pressure greater than or equal to atmospheric pressure. The invention likewise relates to a surface vehicle comprising at least one such air cycle device.

The invention relates to an exchanger arrangement (3) for the heat transfer and/or selective material transfer between a first fluid (F1) and a second fluid (F2), which can flow through the arrangement (3), said arrangement (2) being constituted of a multitude (n) of adjacent local exchanger elements (E.sub.1, E.sub.2, . . . , E.sub.n). The exchanger arrangement (3) has at least in some sections a cylindrical shape or the shape of a segment thereof or a prismatic shape having a polygonal base or the shape of a segment thereof. The adjacent local exchanger elements (E.sub.1, E.sub.2, . . . , E.sub.n) are flat structures that are either wedge-shaped or sheet-like.