Abstract: A refrigerant fluid circuit for a heat treatment system, including a main branch starting at a first convergence point and terminating at a first divergence point and including at least one accumulator, a compression device and a first heat exchanger, the refrigerant fluid circuit including a first branch and a second branch, both starting at the first divergence point and terminating at the first convergence point, the first branch including a second heat exchanger, the second branch including a third heat exchanger. The refrigerant fluid circuit includes a bypass branch which starts at a second divergence point situated on the second branch, downstream of the third heat exchanger, and which terminates at a second convergence point situated on the main branch, downstream of the at least one accumulator and upstream of the compression device.

Abstract: Thermal conditioning system including a refrigerant circuit successively including: a compression device; a first two-fluid heat exchanger arranged on a first loop of a heat transfer liquid circuit; a second two-fluid heat exchanger arranged on a second heat transfer liquid loop; a first expansion device; a third two-fluid heat exchanger arranged on a third heat transfer liquid loop. The first loop has a first heat exchanger configured to exchange heat with a first air flow. The second loop has a second heat exchanger configured to exchange heat with a second air flow. The third loop has a third heat exchanger configured to exchange heat with the first air flow. The first loop includes a fourth heat exchanger configured to exchange heat with the second air flow.

Abstract: The invention relates to a loop (14) for heat transfer liquid (48) for a vehicle comprising a first network (70) and a second network (71), a means (42) for circulating the heat transfer liquid (48), a first heat exchanger (100) configured to be thermally coupled to a first element (40) of an electric drivetrain of the vehicle, a means (72) for moving the heat transfer liquid (48), a second heat exchanger (200) configured to be thermally coupled to a second element (49) and a radiator (51) arranged to be traversed by an external air flow (EF), the radiator (51) comprising a first cooling zone (74) and a second cooling zone (75), a first output (54) of the radiator (51) being connected to the first heat exchanger (100) and a second output (53) of the radiator (51) being connected to the second heat exchanger (200). Application to motor vehicles.

Abstract: The invention relates to a thermal conditioning circuit (1) for a hybrid or electric motor vehicle, in which a refrigerant can circulate, said circuit (1) comprising a compressor (3), a condenser (5), an evaporator-condenser (7), an evaporator (9) and a heat exchanger (11) thermally coupled to an electric member, e.g. a vehicle electric battery, characterized in that the circuit is configured to operate at least in the following three modes in which the refrigerant can circulate in a cascade and successively:—via the condenser (5), the evaporator-condenser (7) and the evaporator (9) in a first mode;—via the condenser (5), the evaporator (9) and the evaporator-condenser (7) in a second mode; and—in another mode, i.e.

Abstract: Thermal regulation circuit for a vehicle, said circuit comprising first (2) and second (4) heat exchangers that are situated in series along a direction of circulation of an air flow intended to pass through them in this order, said circuit comprising a third heat exchanger (6) intended to be passed through by an ambient air flow, said circuit being configured to allow a refrigerant to circulate in series in the first (2) and third (6) heat exchangers and a heat-transfer fluid to circulate in the second heat exchanger (4).

Abstract: A pressure sensor arrangement includes a housing with a sensor chamber and a pressure connector with a fluid inlet opening and a fluid channel, a subassembly with an electrical connector and a pressure sensing element, and a preformed resin component with a hole and an embedded carrier structure. A method for assembling a pressure sensor arrangement includes the steps of: positioning the preformed resin component at the pressure connector such that the fluid inlet opening and the hole communicate with each other, pressing the subassembly against the preformed resin component such that the pressure sensing element communicates with the hole, fixing the housing to the subassembly, and curing the resin component to create a hermetic connection between the pressure connector and the pressure sensing element.

Abstract: A reversible thermal management device for a motor vehicle includes a refrigerant fluid circuit containing a main loop which has, successively, a compressor, an internal condenser, a first expansion device and an external evaporator/condenser. The device also has a three bypass branches. The third bypass branch has a heat exchanger. The device further includes a device for redirecting the refrigerant fluid coming from the internal condenser towards the first expansion device or the first bypass branch, a stop valve for the refrigerant fluid, arranged on the main loop, a first check valve arranged on the second bypass branch to block the refrigerant fluid coming from the internal condenser, a second check valve arranged on the main loop to block the refrigerant fluid coming from the evaporator/condenser, and a device for redirecting fluid coming from the first expansion device towards the heat exchanger of the third bypass branch or the evaporator/condenser.

Abstract: A thermal conditioning system for a motor vehicle, including a refrigerant circuit including a main loop including in succession: a compression device; a first heat exchanger; a first expansion device; a second heat exchanger; a third heat exchanger; a refrigerant accumulation device. An inner volume of a portion of main loop extending from an outlet of the first heat exchanger to an inlet of the first expansion device defines a first reference volume. An inner volume of the accumulation device defines a second reference volume. The ratio of the first reference volume and the second reference volume is greater than 0.2.

Abstract: Fluid circulation valve, the said valve comprising a housing (1) and a body (2) for circulation of fluid, the said body (2) being located at least partially within the said housing (1), the said body (2) being attached to the housing (1) and having a passage (4) for fluid between the said body (2) and the said housing (1), the said valve further comprising a control member (30) that can be actuated electromagnetically, the said control member (30) being able to move with respect to the said body (2) so as to selectively open or close the said passage (4), the said body (2) having at least locally a tubular configuration at the said passage (4), the said control member (30) being able to slide along the said body (2) at least at the said passage (4).

Abstract: The invention relates to a thermal conditioning circuit (1) for a hybrid or electric motor vehicle, in which a refrigerant can circulate, said circuit (1) comprising a compressor (3), a condenser (5), an evaporator-condenser (7), an evaporator (9) and a heat exchanger (11) thermally coupled to an electric member, e.g. a vehicle electric battery, characterized in that the circuit is configured to operate at least in the following three modes in which the refrigerant can circulate in a cascade and successively:—via the condenser (5), the evaporator-condenser (7) and the evaporator (9) in a first mode;—via the condenser (5), the evaporator (9) and the evaporator-condenser (7) in a second mode; and —in another mode, i.e.

Abstract: The invention relates to a circuit (1) for coolant (47) comprising a main duct (3), a first branch (4), a second branch (5) and a third branch (25), the main duct (3) comprising a compression device (2) and a main heat exchanger (8) arranged to be traversed by an external air flow (EF), the first branch (4) comprising a first heat exchanger (13) thermally coupled to a loop (14) for heat transfer liquid (48) and an accumulation device (15), the second branch (5) comprising a second heat exchanger (17), the third branch (25) comprising a third heat exchanger (26), characterised in that the first branch (4) and the second branch (5) are parallel and meet at a convergence point (6), the first branch (4) and the third branch (25) meet at a first junction point (19). Application to motor vehicles.

Abstract: A temperature management system for a vehicle is disclosed. The temperature management system includes a refrigerant circuit and a heat transfer fluid loop. The refrigerant circuit includes a compression device, an expansion member, a first heat exchanger configured to exchange heat between the refrigerant and an air flow external to a vehicle interior, a second heat exchanger configured to exchange heat between the refrigerant and the heat transfer fluid circulating in the loop, and a fourth heat exchanger configured to exchange heat between the refrigerant and an air flow inside the vehicle interior. The the heat transfer fluid loop includes, on a main line, the second heat exchanger and a primary radiator configured to exchange heat between the air flow external to the vehicle interior and the heat transfer fluid.

Abstract: The present invention relates to a circuit (1) for a vehicle configured to be traversed by a coolant (FR). The circuit (1) comprises a main branch (2) comprising a main heat exchanger (3) comprising at least one inlet (100; 101, 102) for coolant (FR). The circuit (1) comprises a first branch (4) and a second branch (5) that extend between a point of divergence (6) and a point of convergence (7). The first branch (4) comprises a first compression device (9), a first expansion member (8) and a first heat exchanger (10) configured to thermally treat an electrical storage device (11) of the vehicle. The second branch (5) comprises a second compression device (13), a second expansion member (12) and a second heat exchanger (14) configured to thermally treat a passenger compartment of the vehicle. The circuit (1) comprises a high-pressure line (200) that comprises a first portion (201) extending between an outlet (31) of the first compression device and the inlet (100; 101, 102).

Abstract: A thermal management circuit for a hybrid or electric vehicle is disclosed. The thermal management circuit has a first reversible air conditioning loop in which a refrigerant circulates and includes a two-fluid heat exchanger arranged jointly on a second loop for the circulation of a heat-transfer fluid. The second loop for the circulation of a heat-transfer fluid includes a first circulation branch including in the direction in which the heat-transfer fluid circulates, a first pump, a first radiator arranged in an internal air flow, and a battery heat exchanger. A second circulation branch is connected in parallel with the second radiator and includes a second pump and an electric device for heating the heat-transfer fluid. A third circulation branch connected in parallel with the first pump and the battery heat exchanger includes the two-fluid heat exchanger.

Abstract: Disclosed is a method for controlling a thermal regulation circuit of a vehicle, the circuit comprising first (2) and second (4) heat exchangers situated in series in a circulation direction of an air flow intended to pass through them in this order, the circuit further comprising an additional heat exchanger (16) situated upstream from the first heat exchanger (2) in the circulation direction of the air flow, the circuit being configured to allow the circulation of a refrigerant fluid in the first exchanger (2) and the circulation of a heat transfer fluid in the second exchanger (4) and in the additional exchanger (16), the method comprising a step of generating or increasing a flow rate of the heat transfer fluid in the additional exchanger (16) depending on operating modes of the circuit.

Abstract: The invention concerns a method for managing a thermal management device (1) for a motor vehicle, comprising the following steps: —increasing the speed of rotation of the compressor (3) to its maximum speed, —determining a modified setpoint temperature (T15-sp3) of the third element (300) greater than the first setpoint temperature (T15-sp1), so that the temperature of the second element (200) at the outlet of the first evaporator (11) tends towards its setpoint temperature (T11-sp), —adjusting the opening diameter of the second expansion device (13) so that the temperature of the third element (300) at the outlet of the second evaporator (15) reaches a modified setpoint temperature (T15-sp3), until the temperature of the second element (200) at the outlet of the first evaporator (11) reaches the setpoint temperature (T11-sp). The invention further relates to the thermal management device (1) for implementing said management method.

Abstract: The present invention relates to a reversible air-conditioning circuit (1) comprising: •a main loop (A) comprising a compressor (3) and a water condenser (5) jointly connected to an auxiliary circuit, a first expansion device (7), an external evaporator-condenser (9), a second expansion device (15), and an evaporator (17), •a first bypass branch (B) comprising an internal condenser (13), the first bypass branch (B) connecting a first junction point (31) arranged downstream from the water condenser (5) to a second junction point (32) arranged upstream from the second expansion device (15), •a second bypass branch (C) connecting a third junction point (33) arranged downstream from the external evaporator-condenser (9) to a fourth junction point (34) arranged downstream from the evaporator (17), and •a third bypass branch (D) connecting a fifth junction point (35) arranged downstream from the third junction point (33) to a sixth junction point (36) arranged downstream from the first junction point (31).

Abstract: Fluid circulation valve, the said valve comprising a housing (1) and a body (2) for circulation of fluid, the said body (2) being located at least partially within the said housing (1), the said body (2) being attached to the housing (1) and having a passage (4) for fluid between the said body (2) and the said housing (1), the said valve further comprising a control member (30) that can be actuated electromagnetically, the said control member (30) being able to move with respect to the said body (2) so as to selectively open or close the said passage (4), the said body (2) having at least locally a tubular configuration at the said passage (4), the said control member (30) being able to slide along the said body (2) at least at the said passage (4).

Abstract: The invention relates to a circuit (1) for coolant (47) comprising a main duct (3), a first branch (4), a second branch (5) and a third branch (25), the main duct (3) comprising a compression device (2) and a main heat exchanger (8) arranged to be traversed by an external air flow (EF), the first branch (4) comprising a first heat exchanger (13) thermally coupled to a loop (14) for heat transfer liquid (48) and an accumulation device (15), the second branch (5) comprising a second heat exchanger (17), the third branch (25) comprising a third heat exchanger (26), characterised in that the first branch (4) and the second branch (5) are parallel and meet at a convergence point (6), the first branch (4) and the third branch (25) meet at a first junction point (19). Application to motor vehicles.

Abstract: A reversible thermal management device for a motor vehicle includes a refrigerant fluid circuit containing a main loop which has, successively, a compressor, an internal condenser, a first expansion device and an external evaporator/condenser, a first, second, and third bypass branch, the third branch having at least one heat exchanger, a device for redirecting the refrigerant fluid coming from the internal condenser towards the first expansion device or the first bypass branch, a stop valve for the refrigerant fluid, arranged on the main loop, a first check valve arranged on the second bypass branch to block the refrigerant fluid coming from the internal condenser, a second check valve arranged on the main loop to block the refrigerant fluid coming from the evaporator/condenser, and a device for redirecting the refrigerant fluid coming from the first expansion device towards the at least one heat exchanger of the third bypass branch or the evaporator/condenser.