Abstract: A casing (1) is dedicated to housing a heat exchanger (3) in a heating, ventilation and/or air conditioning installation, for example of a motor vehicle. The heat exchanger (3) comprises an air inlet face (12), an air outlet face (13), a rear end face (15), a front end face (14), and at least one side face (16, 17) capped with a radiator tank (4, 5). The casing (1) comprises side walls (18, 19) defining at least one housing to receive at least one part of the radiator tank (4, 5).

Abstract: Heat exchanger, for example for a motor vehicle air-conditioning circuit, comprising a plurality of tubes (12) for circulating a heat-transfer fluid, the ends of said tubes (12) opening into manifolds and reservoirs (11) of thermal storage material in contact with the tubes (12) so that the storage material and the heat-transfer fluid exchange heat with one another. The exchanger comprises a plurality of heat-exchange elements (4) each housing at least one reservoir (11) and at least one tube (12) which are nested.

Abstract: Air conditioner pertaining to the present invention in which a synthetic polymer case, in which an antibacterial agent impregnated in a medium such as a porous body or water-absorbing polymer is sealed, is arranged in the upstream airflow side and/or downstream airflow side of an evaporator, which air conditioner is characterized in that the thickness of the wall of the case is formed to allow gas permeation of the antibacterial agent, and in that the thickness of the wall on the downstream airflow side is less than the thickness of the wall on the upstream airflow side.

Abstract: In a motor vehicle air conditioning installation comprising a central control unit (12), a computer network (14) connected to the central control unit (12) and a plurality of peripherals (101, 102, 103, . . . , 10n) connected to nodes (N1, N2, N3, . . . , Nn) of the computer network, the peripherals are connected in series via a common conductor (18). The installation comprises means (120) for inputting at the level of each peripheral an electric signature on a common conductor, means (130) for detecting an electric signal depending upon the electric signatures of the peripherals situated upstream on the common conductor (18), means for generating a data item representing the relative position of the peripheral on the basis of the electric signal detected, and means for identifying the node of the network to which it is connected on the basis of the relative position data item generated.

Abstract: A device for cooling batteries, particularly of an electric and/or hybrid vehicle, includes a pair of compartments (1, 12) in communication with one another, including a first compartment (1) housing the batteries distributed among adjacent columns and a second compartment (12) housing at least a blower (14). One of these compartments (1, 12) has an air intake aperture (5) while the other compartment (1, 2) has a discharge aperture (5) for discharging the admitted air to the outside. The first compartment (1) modifies the dynamics of the air passing through it, starting from an axial circulation of air along the columns of batteries.

Abstract: In a motor vehicle air conditioning installation comprising a central control unit (12), a computer network (14) connected to the central control unit (12) and a plurality of peripherals (101, 102, 103, . . . , 10n) connected to nodes (N1, N2, N3, . . . , Nn) of the computer network, the peripherals are connected in series via a common conductor (18). The installation comprises means (120) for inputting at the level of each peripheral an electric signature on a common conductor, means (130) for detecting an electric signal depending upon the electric signatures of the peripherals situated upstream on the common conductor (18), means for generating a data item representing the relative position of the peripheral on the basis of the electric signal detected, and means for identifying the node of the network to which it is connected on the basis of the relative position data item generated.

Abstract: A casing (1) is dedicated to housing a heat exchanger (3) in a heating, ventilation and/or air conditioning installation, for example of a motor vehicle. The heat exchanger (3) comprises an air inlet face (12), an air outlet face (13), a rear end face (15), a front end face (14), and at least one side face (16, 17) capped with a radiator tank (4, 5). The casing (1) comprises side walls (18, 19) defining at least one housing to receive at least one part of the radiator tank (4, 5).

Abstract: Heat exchanger, for example for a motor vehicle air-conditioning circuit, comprising a plurality of tubes (12) for circulating a heat-transfer fluid, the ends of said tubes (12) opening into manifolds and reservoirs (11) of thermal storage material in contact with the tubes (12) so that the storage material and the heat-transfer fluid exchange heat with one another. The exchanger comprises a plurality of heat-exchange elements (4) each housing at least one reservoir (11) and at least one tube (12) which are nested.

Abstract: The present invention relates to a control panel, in particular for a motor vehicle, provided with at least one rotary button (10) for adjusting a parameter relating to an air stream propelled by a ventilating, heating and/or air conditioning apparatus, characterised in that the said adjusting button (10) is an optical encoder with selective light emission and reception, and comprising a rotatable part (20) protruding from the control panel, and a fixed part (30) co-operating with the moving part (20) for emitting and receiving the light. This control panel is adapted to adjust, for example, the temperature, flow rate or distribution of the said air stream.

Abstract: An expansion device, intended for installation in an air conditioning system with a supercritical refrigerant fluid (FR), is described. The expansion device (12) comprises a body (120) through which refrigerant fluid passes, equipped with an inlet chamber (1210) into which the refrigerant fluid arrives and an outlet chamber (1230) through which the refrigerant fluid departs. The expansion device further comprises a set of expansion means to allow the refrigerant fluid to pass from the inlet chamber (1210) to the outlet chamber (1230), comprising a variable expansion means (1212) comprising a first orifice (34) and an adjusting screw (134) suitable for adjusting the flow section of the first orifice (34); and, a fixed expansion means comprising a second orifice (35) with a fixed flow section.

Abstract: The invention relates to an air conditioning device for the passenger compartment of a vehicle, said device comprising a first closed loop (BF) which contains an evaporator (BF5), through which an air stream (F) may flow, and in which a first coolant may flow such as to transfer cold to said air stream in the evaporator. According to said invention, the device comprises a second closed loop (BS) in which a second coolant may flow between the evaporator (BF5) and a tank (BS2), such as to receive cold from the first coolant in the evaporator for storing the same in the tank and returning to the air stream in the evaporator, according to the cooling capacity, produced by the first loop and to the air conditioning needs.

Abstract: The invention relates to a heating device comprising a housing (15), through which air to be heated can pass and which delimits a heating space controlled by a powersupply control circuit connected to a power source. The heating spacecomprises electric heating modules (14), each heating module consisting of a first and second metal tape (10, 10) that arc essentially parallel in a transversal direction (D) and of a positive temperature coefficient resistive elements (12) fixed between the two metal tapes.

Abstract: Electric heating device comprising an electric radiator (10) for heating the air passing through it, said radiator comprising a casing (12), at least one resistive element mounted in the casing and constituted by at least one zigzag metal strip (22) which is disposed so as to be directly exposed to the air passing through the casing, and a circuit (30) for controlling the electrical supply of the resistive element or elements connected to a power supply. The electric radiator (10) comprises a set of individual heating modules (20) disposed parallel to one another in the casing (12) and so as to be directly exposed to the air passing through the casing, each heating module (20) comprising a pleated or corrugated metal strip (22) and an electronic switch controlled by the control circuit (30) intended to selectively inhibit the electrical supply of the metal strip (22).

Abstract: A device for air-conditioning a motor vehicle has an engine-cooling loop, a heat-pump loop containing a compressor, an evaporator as cold source of the heat pump and a condenser as hot source of the heat pump. The condenser is integrated into the engine-cooling loop upstream of the air heater. An air-conditioning branch has a condenser and an evaporator with an upstream end connected to the heat-pump loop downstream of the compressor, and a downstream end connected to the heat-pump loop upstream of the compressor. Switching means make it possible to make the refrigerant fluid circulate either in the heat-pump loop, or in the heat-pump branch, in such a way as to form a heat-pump loop.

Abstract: A heat exchanger for a heat transfer fluid circuit comprising ducts for the circulation of the heat transfer fluid, which are inserted between an inlet and an outlet, is described. Cavities designed to contain a heat storage fluid adjacent to the cooling fluid circulation ducts and associated with heat-exchanger surfaces, so that heat storage fluid is capable of exchanging heat with the air flow, if the circulation of the heat transfer fluid is stopped, are also described.

Abstract: The invention relates to a keypad (10) for a control panel, in particular for a motor vehicle instrument system, comprising a front (30) provided with openings (32) through which a number of push-buttons (20) are placed, each positioned facing a contactor (14) fixed to a card (12), characterized in that the buttons (20) are linked together at least in groups of two to form a unitary set (22) and are placed with respect to one another on the keypad (10) such that each button (20) can be moved individually and pushing thereof causes solely actuation of the contactor (14) assigned to said button, without any effect on the contactors of the other buttons.

Abstract: The invention relates to a ventilation, heating and/or air conditioning equipment for the passenger compartment of a motor vehicle provided with a main thermodynamic loop comprising at least, according to the direction of flow of a refrigerant fluid: a compressor (14), a condenser (16), an expansion device (20), and a main air-cooling evaporator (22). According to the invention, the equipment furthermore comprises a secondary fluid loop for the flow of a heat conductor fluid coupled with the main thermodynamic loop in order to cool the heat conductor fluid when this is desirable.

Abstract: A heat exchanger for exchange of heat between a first fluid and a second fluid comprises a stack of pockets (1) mutually aligned in a longitudinal direction and having two header boxes (16, 17) that are mutually juxtaposed in a lateral direction. The first fluid is injected into an upstream connecting channel (12) by a longitudinal nozzle (22) passing through a heat exchanger end face (5) remote from the upstream connecting channel, and at least one other connecting channel (14). This longitudinal nozzle has a cross section of oblong general shape, whose greatest dimension is parallel to the greatest dimension of the pockets. The heat exchanger may be produced particularly in the form of an evaporator for an air-conditioning device for the passenger compartment of a vehicle.

Abstract: The invention relates to a system for controlling the speed of a motor (1) of an electric fan unit comprising a field-effect transistor (3) that controls the motor (1) using pulse-width modulation, the field-effect transistor (3) being connected to a circuit (5) comprising a voltage source (7) and a resistive element (9) in series, the circuit (5) is connected between the gate (G) of the field-effect transistor (3) and a second source (S2) that is connected to a first source (S1) of the field-effect transistor (3), via an inductor (11) in order to allow a reduction in the slope of the current as the field-effect transistor (3) switches.

Abstract: The invention concerns a device for protecting an electric source adapted to power an electric member comprising a test unit (6) adapted to deliver a signal (8) representing the availability of the electric source (2), to a control unit (10). The unit (10) determines an operating mode of the electric member (4) wherein the power consumption of the electric member is a function of the availability signal (8) received from the test unit (6). The electric source (2) can power directly the electric member (4) and the control unit (10) can act on the electric member itself. The control unit (10) can also be interposed between the electric source (2) and the electric member (4) to modify at least one characteristic of the current powering the electric member.