Automotive vehicle air treatment system

Abstract

The invention relates to a system (20) for treating air in a motor vehicle, such as an air conditioning system. The treatment system comprises an inlet enclosure (30) communicating with the environment of the motor vehicle, a housing (28) with a heat exchanger and a fan. The housing comprises a first passage (52) communicating with the passenger compartment (16), a second passage (68) between the inlet enclosure and the housing. The first passage comprises a first seat (54), the treatment system (20) further comprising a shutter (56) movable between a first position against the first seat (54) in order to close the first passage, and a second position. The housing comprises a second passage with a second seat (70) between the inlet enclosure (30) and the housing (28); and in that in the second position the shutter (56) is against the second seat (70) in order to close the second passage (68). Figure to be published with the abstract: Figure 5

Description

Title of the invention: Motor vehicle air treatment system

[0001] The invention relates to moisture entering an air treatment system for a motor vehicle in the rain. The invention relates more specifically to an air treatment system with an inlet enclosure for a motor vehicle. The invention also relates to a motor vehicle.

[0002] In order to improve the comfort of the occupants, a motor vehicle is equipped with an air treatment system. The treatment system generally comprises a fan sucking in air from the outside environment, and a heat pump heating this air before injecting it into the passenger compartment via different ventilation outlets. This configuration makes it possible to control the temperature while limiting the consumption of primary energy. In parallel with heating the air, the treatment system is optionally capable of dehumidifying the incoming air. The treatment system is generally designated by the acronym "HVAC" which corresponds to the English expression "heating ventilation and air conditioning".

[0003] Furthermore, a motor vehicle is commonly exposed to rainy episodes. The major challenge lies in the fact that excessive humidification of the filter leads to adverse consequences. Not only does it make the air inside the vehicle unpleasant for the occupants, but it also presents a substantial risk to the electrical mechanism. The presence of a significant amount of water can lead to serious malfunctions or even total breakdown.

[0004] In order to preserve the equipment of the treatment system, it is known to close the air inlet to the environment in the event of rain detection. This limits the entry of droplets and the spread of humidity; despite tropical-type rains exceeding a flow of 20 mm / h.

[0005] Document EP2212137B1 presents a method for controlling an air conditioning installation in a vehicle in order to reduce the entry of humidity into the passenger compartment of the vehicle. For this, a measurement of the quantity of water present at the fresh air intake opening is determined as a function of the signal from a sensor. The air conditioning installation is controlled, as a function of the determined measurement of the quantity of water present at the fresh air intake opening. However, the method allows humidity to enter the air conditioning installation before the humidity detection and then closing. Despite the closed state, the humidity already entered spreads throughout the air conditioning installation. This phenomenon causes damage and risks of breakdown.

[0006] The invention aims to address at least one of the problems or drawbacks encountered in the prior art. In particular, the invention aims to reduce the spread of moisture in a motor vehicle air treatment system. The invention also aims to optimize the simplicity, compactness, reduction of moisture spread, and control of a motor vehicle air treatment system.

[0007] According to a first aspect, the invention provides a motor vehicle air treatment system comprising a passenger compartment; the treatment system comprising an inlet enclosure intended to communicate with the environment of the motor vehicle, a housing with a heat exchanger and a fan, the housing comprising a first passage intended to communicate with the passenger compartment, a second passage between the inlet enclosure and the housing; the first passage comprising a first seat, the treatment system further comprising a shutter movable between a first position against the first seat in order to close the first passage, and a second position; remarkable in that the housing comprises a second passage with a second seat between the inlet enclosure and the housing; and in that in the second position the shutter is against the second seat in order to close the second passage.

[0008] The invention uses the same shutter to isolate the upstream part of the treatment system, in this case the inlet enclosure. Furthermore, this same shutter makes it possible to control the origin of the flow of treated air: from the passenger compartment or from the environment. The invention preserves the dry part by cutting it off from the inlet exposed to humidity. The transfer of humidity is controlled. The shutter closes the dry part so that it remains dry.

[0009] Preferably, the shutter comprises a circular shutter surface which is capable of cooperating with the first seat and the second seat.

[0010] Preferably, the second seat forms a narrowing between the housing and the inlet enclosure.

[0011] Preferably, the treatment system comprises a filter, the shutter being between the inlet enclosure and said filter.

[0012] Preferably, the shutter comprises a pivot connection opposite the first seat and the second seat.

[0013] Preferably, the first seat is inclined relative to the second seat.

[0014] Preferably, the first seat is inclined relative to the second seat by at least minus 60°.

[0015] Preferably, the first seat is inclined relative to the second seat by at least 90°.

[0016] Preferably, the housing comprises a straight conduit extending from the enclosure inlet to the motor-fan unit; the first passage and the second passage communicating with the right duct.

[0017] Preferably, the treatment system comprises a main housing housing the heat exchanger and an inlet housing fixed to the main housing and delimiting the inlet enclosure; the shutter being in the inlet housing.

[0018] Preferably, the inlet enclosure comprises a main extension perpendicular to the second seat, an inlet mouth extending along the main extension.

[0019] Preferably, the inlet enclosure forms an angled conduit connecting the inlet mouth to the second passage.

[0020] Preferably, the shutter comprises a sealed body capable of cooperating in a sealed manner with the first seat and the second seat, the shutter further comprising at least one, more preferably two pivoting arms projecting from the sealed body and cooperating with the first seat in order to close it in the first position.

[0021] Preferably, the treatment system comprises a heat pump.

[0022] Preferably, the shutter is hollow.

[0023] Preferably, the first seat is horizontal.

[0024] Preferably, the second seat is vertical.

[0025] Preferably, each pivoting arm comprises a pivot connection opposite the sealed body.

[0026] Preferably, the pivot connection is in the middle of the straight duct and / or at a distance from the inlet enclosure.

[0027] Preferably, with respect to the direction of air flow from the environment to the housing, the first seat is downstream of the second seat.

[0028] Preferably, the system comprises an actuator configured to move the shutter between the first position and the second position.

[0029] Preferably, the first seat is adjacent to the second seat.

[0030] Preferably, the processing system is configured so that the shutter changes from the first position to the second position by turning; more preferably by turning a quarter turn.

[0031] According to another aspect, the invention relates to a motor vehicle air treatment system comprising a passenger compartment; the treatment system comprising a housing with a heat exchanger, a fan, an inlet enclosure intended to communicate with the environment of the motor vehicle, the housing comprising a first passage intended to communicate with the passenger compartment, a second passage between the inlet enclosure and the fan, the first passage comprising a first seat, the treatment system further comprising a movable shutter between a first position against the first seat so as to cut off an airflow through the first passage, and a second position; remarkable in that the housing includes a second passage with a second seat between the inlet enclosure and the housing; and in that in the second position the shutter is against the second seat so as to cut off an airflow through the second passage.

[0032] According to another aspect, the invention provides a motor vehicle comprising an air treatment system, remarkable in that the treatment system is in accordance with the invention.

[0033] Preferably, the treatment system comprises a canopy grid communicating with the inlet enclosure.

[0034] Preferably, the processing system comprises a rain detector and an actuator capable of driving the shutter; the processing system being configured so that when the shutter is in the first position and the rain detector detects rain, said actuator moves the shutter into the second position.

[0035] Preferably, the vehicle comprises a passenger compartment, the first passage opening into the passenger compartment.

[0036] Each characteristic introduced by the expression “preferably” given in relation to one of the aspects of the invention applies to all the other aspects of the invention.

[0037] The invention will be well understood and other aspects and advantages will appear clearly on reading the description which follows, given with reference to the figures appended and listed below.

[0038] [Fig.l] is a side view of a motor vehicle according to the invention.

[0039] [Fig.2] shows a motor vehicle air treatment system according to the invention.

[0040] [Fig.3] is an isometric front view of an input box with an enclosure motor vehicle air treatment system inlet according to the invention.

[0041] [Fig.4] is a side view of an inlet housing with an inlet enclosure of a motor vehicle air treatment system according to the invention.

[0042] [Fig.5] is a sectional view of an inlet housing with an inlet enclosure of a motor vehicle air treatment system according to the invention.

[0043] In the following description, the term "comprise" is synonymous with "include" and is not limiting in that it allows the presence of other elements in the motor vehicle or air treatment system to which it relates. It is understood that the term "comprise" includes the terms "consist of".

[0044] In the present description, the term “longitudinal”, the term “longitudinally”, the term “transverse”, and the term “transversely” are used according to the reference system of the vehicle, in the mounting configuration. The term “longitudinal” corresponds to the vehicle's main direction of travel. The term "transverse" corresponds to a direction perpendicular to the vehicle's main direction of travel. The term "front" refers to the vehicle's main direction of travel. The term "rear" refers to the opposite of the front of the vehicle.

[0045] The X axis represents the longitudinal direction, the Y axis represents the transverse direction, and the Z axis represents the vertical direction of the motor vehicle. These three axes define a direct trihedron whose orientation is preserved throughout the figures.

[0046] In the present description, the ranges of values include the limits which delimit them.

[0047] In the present description, the equalities between the values are not to be understood in the strict sense insofar as each equality authorizes a variation of at most 10%, preferably at most 5%, more preferably at most 2%, between these values.

[0048] In the present description, the term "vertical" and the term "horizontal" are not to be understood in the strict sense of the term. Indeed, they allow an inclination of at most 20°, preferably at most 10°, more preferably at most 5°, even more preferably at most 2°; compared to the strict sense of these terms.

[0049] In this description, the technical characteristics are defined in the mounting configuration of the air treatment system, unless explicitly mentioned otherwise.

[0050] Throughout the description, the different figures use the same reference signs to designate identical or similar entities.

[0051] [Fig.l] represents a motor vehicle 10 according to the invention. The motor vehicle 10 comprises energy storage means and at least one motor (not shown) adapted to drive said motor vehicle 10.

[0052] The motor vehicle 10 comprises a structure 12 and several glazed surfaces including a windshield 14. The windshield 14 delimits the front of the passenger compartment 16 of the motor vehicle 10. The passenger compartment 16 is intended to accommodate the occupants (not shown) of the motor vehicle 10. The structure 12 supports various openings providing access to the passenger compartment 16 or to other compartments. The openings comprise a front hood 18, generally called an engine hood. The front hood 18 is movable between a closed position flush with the bodywork, and an open position in elevation, for example at the level of the windshield 14.

[0053] In order to ensure the comfort of the occupants, including the driver and passengers (not shown), the motor vehicle 10 comprises a system 20 for treating the air circulating in the passenger compartment. The treatment system 20 may be an air conditioning system. The treatment system 20 is capable of capturing air from outside the motor vehicle and of directing it into the passenger compartment 16 after treatment. The system treatment system 20 may include heating. The treatment system 20 is also capable of cooling and optionally drying the air.

[0054] The processing system 20 is controlled by a controller 22. The controller 22 may be a computer such as the on-board computer of the motor vehicle, or a programmable electronic card.

[0055] The structure 12 comprises a front apron 24. The front apron 24 forms a partition separating the passenger compartment 16 from the front compartment. The front apron 24 is structural; it reinforces the structure 12. It extends over the entire width of the passenger compartment 16. The motor vehicle 10 also comprises a cowl grille 26, for example associated with or integrated into a cowl collector (not shown). The cowl grille 26 communicates with the treatment system 20. It forms an air intake grille through which the treatment system 20 takes air from the environment in order to inject it into the passenger compartment 16. The cowl grille 26 is arranged at the foot of the windshield 14, and behind the front hood 18. The cowl grille 26 is for example mounted on the front apron 24.

[0056] The motor vehicle may, for example, be a private motor vehicle or a utility motor vehicle.

[0057] [Fig.2] shows a processing system 20 for a motor vehicle. The motor vehicle may correspond to that shown in relation to [Fig.l]. The windshield 14, the passenger compartment 16 and the front hood 18 are partially shown.

[0058] The treatment system 20 has a housing 28, for example with a main housing, and an inlet enclosure 30. The housing 28 comprises for example several chambers which communicate with each other. The housing 28 has the largest internal volume of the treatment system 20. The inlet enclosure 30 is connected to the awning grille, and can be fixed to the front apron. Depending on the direction of entry of the air from the environment, the inlet enclosure 30 is upstream of the housing 28.

[0059] The treatment system 20 also comprises a housing 32. The housing 32 forms the outer casing of the treatment system 20. It forms a box. The housing 32 comprises a main housing 48 housing at least one or each heat exchanger 36 and an inlet housing 50 fixed to the main housing and delimiting the inlet enclosure 30.

[0060] The treatment system 20 further comprises a motor-fan unit, and at least one heat exchanger 36, in this case two heat exchangers 36. The motor-fan unit comprises a fan 34 and a motor capable of driving it in rotation. The fan 34 and each heat exchanger 36 are in the housing 28.

[0061] The fan 34 is configured to drive the air through the treatment system 20. It is configured to draw air from the environment and to discharge it into the passenger compartment; in particular through the heat exchangers 36.

[0062] Each heat exchanger 36 comprises, for example, heat exchange slats. The heat exchangers 36 are capable of exchanging calories with the air flow passing through the treatment system 20. This passing air flow may come directly from the environment, or from the passenger compartment 16 in the case of air recycling. The air recycling allows recirculation of the air; for example, when the treatment system 20 operates in a closed loop. The heat exchangers 36 comprise, for example, an evaporator and a condenser. They are connected to other exchangers arranged on the front panel.

[0063] According to one option or alternative of the invention, at least one heat exchanger comprises an electric heating resistor.

[0064] The treatment system 20 also comprises valves 38 for distributing and diverting the air flow in the housing 28. The valves 38 are rotatable between a closed position and an open position parallel to the flow that crosses them. Thus, the valves 38 make it possible to direct, distribute, and share the treated flow towards the different air vents 40. The air vents 40 are, for example, arranged on the dashboard. They communicate with the passenger compartment 16.

[0065] The motor vehicle comprises a rain detector 42. The controller 22 is connected to the rain detector 42 and to the processing system 20. The motor vehicle is configured so that when the rain detector 42 detects rain in front of the windshield 14, it emits a rain presence signal. This signal is received by the controller 22 which then controls the processing system 20. It supplies it with energy so as to maneuver a functional portion. The rain detector 42 can be coupled to a windshield wiper actuation system (not shown) sweeping the windshield 14.

[0066] The rain detector 42 is placed behind the windshield 14. It is fixed there. It comprises, for example, a camera detecting rain in front of the motor vehicle, or drops of water on the windshield 14. According to an alternative of the invention, the rain detector is arranged on the front facade.

[0067] The controller 22 comprises a computer 44 and a storage module 46. The computer 44 may be a microprocessor. The storage module 46 may be a recording medium. It may be a hard disk or a flash memory. The storage module 46 is capable of recording a computer program. The computer program comprises code instructions, which when executed by the computer 44, cause the latter to implement a method for controlling the processing system 20, in particular its shutter (not shown).

[0068] According to a variant of the invention, the computer program is recorded on an external and / or removable recording medium.

[0069] [Fig.3] shows from the front and in elevation an input box 50 of a system of 20 motor vehicle air treatment. The motor vehicle may correspond to that shown in relation to one of Figures 1 to 2.

[0070] The inlet housing 50 partially delimits the housing 28 and the inlet enclosure 30. The housing 28 comprises a first passage 52 intended to communicate with the passenger compartment, and a second passage between the inlet enclosure 30 and the housing 28. The second passage is at the heart of the inlet housing 50. The first passage 52 comprises a first seat 54.

[0071] The treatment system 20 further comprises a shutter 56 movable between a first position against the first seat 54 in order to close the first passage 52, and a second position. The first position is a first angular position for example. In the first position, the shutter 56 blocks, cuts off the circulation of air flow via the first passage 52.

[0072] The treatment system 20 includes a main housing 48 housing the heat exchanger and the fan. The inlet housing 50 is attached to the main housing 48. The inlet housing 50 houses the shutter 56. The shutter 56 is pivotally attached in the inlet housing 50; by means of a pivot connection 58.

[0073] The inlet enclosure 30 comprises a main extension 60 perpendicular to the second seat, an inlet mouth 62 extending along the main extension 60. The inlet mouth 62 comprises a grille. The grille reinforces the inlet mouth 62. The inlet mouth 62 is surrounded by a seal intended to be pressed against the front apron. The inlet enclosure 30 comprises an elbow duct 64 connecting the inlet mouth 62 to the second passage. The inlet housing 50 materializes the elbow duct 64. The elbow duct 64 forms a 90° turn, or more generally a quarter turn.

[0074] According to one option, the treatment system 20 comprises a filter 66. The filter 66 is in the main housing 48, in the housing 28. The shutter 56 is between the inlet enclosure 30 and said filter 66. The filter 66 is for example a fabric or foam filter.

[0075] [Fig.4] shows a side view of a processing system input housing 50 motor vehicle air. The motor vehicle may correspond to that shown in relation to one of Figures 1 to 3. The shutter 56 is shown in the first position; it is raised.

[0076] The housing 28 includes a second passage 68 with a second seat 70 between the inlet enclosure and the housing 28. The inlet housing 50 is essentially hollowed out. It forms an air guide sleeve. It supports the shutter 56. The shutter 56 includes a pivot connection 58 opposite the first seat and the second seat 70. In the second position, the shutter is configured to be against the second seat 70 in order to close the second passage 68. In the second position, the shutter 56 blocks and prevents the circulation of an air flow through the second passage 68.

[0077] The shutter 56 comprises a sealed body capable of cooperating in a sealed manner with the first seat 54 and the second seat 70. The shutter 56 further comprises at least one, preferably two, pivoting arms 72 projecting from the sealed body.

[0078] The processing system comprises a rain detector 42 (shown with a fictitious position) and an actuator 74 capable of driving the shutter 56. The processing system is configured such that when the shutter 56 is in the first position and the rain detector 42 detects rain, said actuator 74 moves the shutter 56 into or toward the second position. The actuator 74 comprises, for example, an electric cylinder, or a rotating motor.

[0079] According to an option of the invention, when the rain detector 42 detects rain, the controller controls the actuator 74 so as to move the shutter 56 provided that the rain reaches a flow threshold, or precipitation flow threshold. The flow threshold may be rain with a flow greater than or equal to 10 mm / h, preferably greater than or equal to 20 mm / h, more preferably greater than or equal to 30 mm / h. This increases the cases where the treatment system 20 remains open in order to optimize the sampling of air from the environment despite rain.

[0080] [Fig. 5] is a partial section of a treatment system 20 for a motor vehicle. The motor vehicle may correspond to that shown in relation to one of FIGS. 1 to 4. The section passes through the inlet housing 50 in order to expose the inlet enclosure 30. The shutter 56 is shown in the second position in solid lines, and in the first position in dotted lines.

[0081] The housing 28 comprises a first passage 52 communicating with the passenger compartment 16, a second passage 68 between the inlet enclosure 30 and the housing 28. The first passage 52 comprising a first seat 54. The treatment system 20 further comprising a shutter 56 movable between a first position against the first seat 54 in order to close the first passage, and a second position against the second seat 70 of the second passage 68. The second seat 70 has an annular shape. It is between, at the interface between, the inlet enclosure 30 and the housing 28. Thus, in the second position the shutter 56 is against the second seat 70 in order to cut off the second passage 68. In the present embodiment, the first seat 54 is horizontal and the second seat 70 is vertical.

[0082] Thus, the shutter 56 isolates the inlet enclosure 30 and the housing 28 so that in the event of rain, despite moisture entering the inlet enclosure 30 and moisture depositing on its internal walls, this moisture does not spread into the housing 28. The filter does not absorb moisture. The sensors and motors of the housing 28 are protected and the probability of failure is reduced.

[0083] The shutter 56 comprises a closing surface 76 which is circular. It comprises at least one constant radius around the pivot connection 58. It is capable of cooperating with the first seat 54 and the second seat 70 in order to close them by rotating. For example, the closing surface 76 is tubular or spherical. By spherical is meant that it forms part of a sphere. The circular nature of the closing surface 76 makes it possible to optimize the simplicity of movement of the shutter 56 and the sealing.

[0084] The second seat 70 forms a narrowing 78 between the housing 28 and the inlet enclosure 30. The narrowing 78 forms a neck. It materializes a reduction in internal width. The narrowing 78 improves the seal. The narrowing 78 also reinforces the wall of the inlet housing 50. The pivot connection 58 of the shutter 56 is opposite the first seat 54 and the second seat 70. This configuration improves the compactness.

[0085] The first seat 54 is inclined relative to the second seat 70; preferably at least 60°, more preferably at least 90°. These angles optimize the clearance inside the housing 28, and therefore limit the pressure losses in the first position. The first seat 54 is adjacent to the second seat 70. They may have surface continuity, preferably an extension of curvature.

[0086] The housing 28 comprises a straight duct 80 extending from the inlet enclosure 30 to the fan (not shown). The first passage 52 and the second passage 68 communicate with the straight duct 80. The straight duct 80 forms a section of the inlet housing 50. It fluidly connects the passages. The pivot connection 58 is in the middle of the straight duct 80. The straight duct 80 is distant from the inlet enclosure 30 in order to limit the spread of humidity.

[0087] The inlet enclosure 30 comprises a main extension 60 perpendicular to the second seat 70, an inlet mouth 62 (shown in dotted lines) extending along the main extension 60. The main extension 60 extends from the second seat 70. It forms the longest internal dimension of the inlet enclosure 30.

[0088] The shutter 56 is hollow. It comprises a sealed body 82 capable of cooperating in a sealed manner with the first seat and the second seat. The shutter 56 further comprises at least one, preferably two, pivoting arms 72 projecting from the sealed body 82. The pivoting arms 72 cooperate with the first seat 54 in order to close it in the first position. At least one or each pivoting arm 72 comprises a pivot connection 58 opposite the sealed body 82. According to one option, the first seat 54 is notched. The pivoting arms 72 are generally triangular. In the first position, the pivoting arms 72 block the notch of the first seat 54. Thus, the size of the first seat 54 can be enlarged in order to increase the flow rate. This arrangement also facilitates assembly.

[0089] The treatment system 20 makes it possible to selectively position the shutter 56 in the first or second position. This allows operation taking renewed air, and operation in a closed circuit.

[0090] According to a preferred embodiment, the shutter is made of a plastic or composite material. The plastic material may comprise a thermoplastic material or a thermosetting material. According to a preferred embodiment, the plastic material is selected from the group comprising polypropylene, polyamide, polyphthalamide, polyetheretherketone, polyphenylene sulfide, polyamide-imide, polyetherimide, polyarylamide, polyepoxide, unsaturated polyester, vinyl ester or polyester-vinyl ester resins. For example, the composite material comprises a matrix of a plastic material as described above with a reinforcement. For example, the reinforcement comprises glass or carbon fibers.

[0091] The shutter comprises at least 10% by weight of recycled plastic material based on the total weight of the plastic material; preferably from 10 to 80% by weight; more preferably from 20 to 60% by weight or from 30 to 40% by weight. The use of recycled plastic material reduces the ecological footprint of the vehicle.

[0092] According to an alternative of the invention, the housing; respectively the casing; comprises a plate in which the first passage and the second passage are formed side by side, the shutter is movable in a translational movement in order to selectively cover the first seat and the second seat.

[0093] The invention comprises the combination of all the embodiments illustrated by all the figures.

[0094] Figures 3 to 5 are isometric views. They each respect a specific scale, real angles and real proportions.

Claims

Claims

1. A system (20) for treating air in a motor vehicle (10) comprising a passenger compartment (16); the treatment system (20) comprising an inlet enclosure (30) for communicating with the environment of the motor vehicle (10), a housing (28) with a heat exchanger (36) and a fan (34), the housing (28) comprising a first passage (52) for communicating with the passenger compartment (16), a second passage (68) between the inlet enclosure (30) and the housing (28); the first passage (52) comprising a first seat (54), the treatment system (20) further comprising a shutter (56) movable between a first position against the first seat (54) to close the first passage (52), and a second position; characterized in that the housing (28) comprises a second passage (68) with a second seat (70) between the inlet enclosure (30) and the housing (28);and in that in the second position the shutter (56) is against the second seat (70) in order to close the second passage (68).;

2. Treatment system (20) according to claim 1; characterized in that the shutter (56) comprises a circular shutter surface (76) which is capable of cooperating with the first seat (54) and the second seat (70).

3. Treatment system (20) according to one of claims 1 to 2; characterized in that the second seat (70) forms a narrowing (78) between the housing (28) and the inlet enclosure (30); preferably, the treatment system (20) comprises a filter (66), the shutter (56) being between the inlet enclosure (30) and said filter (66).

4. Treatment system (20) according to one of claims 1 to 3; characterized in that the shutter (56) comprises a pivot connection (58) opposite the first seat (54) and the second seat (70); and / or the first seat (54) is inclined relative to the second seat (70); preferably by at least 60°, more preferably by at least 90°.

5. A treatment system (20) according to one of claims 1 to 4; characterized in that the housing (28) comprises a straight duct (80) extending from the inlet enclosure (30) towards the fan (34); the first passage (52) and the second passage (68) communicating with the straight duct (80).

6. Processing system (20) according to one of claims 1 to 5; characterized in that the processing system (20) comprises a housing main (48) housing the heat exchanger (36) and an inlet housing (50) fixed to the main housing (48) and delimiting the inlet enclosure (30); the shutter (56) being in the inlet housing (50).

7. Treatment system (20) according to one of claims 1 to 6; characterized in that the inlet enclosure (30) comprises a main extension (60) perpendicular to the second seat (70), an inlet mouth (62) extending along the main extension (60); preferably the inlet enclosure (30) forms an angled conduit (64) connecting the inlet mouth (62) to the second passage (68).

8. Treatment system (20) according to one of claims 1 to 7; characterized in that the shutter (56) comprises a sealed body (82) capable of cooperating in a sealed manner with the first seat (54) and the second seat (70), the shutter (56) further comprising at least one, preferably two pivoting arms (72) projecting from the sealed body (82) and cooperating with the first seat (54) in order to close it in the first position.

9. Motor vehicle (10) comprising an air treatment system (20), characterized in that the treatment system (20) is in accordance with one of claims 1 to 8; preferably, the treatment system (20) comprises a cowl grille (26) communicating with the inlet enclosure (30).

10. Motor vehicle (10) according to claim 9; characterized in that the processing system (20) comprises a rain detector (42) and an actuator (74) capable of driving the shutter (56); the processing system (20) being configured so that when the shutter (56) is in the first position and the rain detector (42) detects rain, said actuator (74) moves the shutter (56) into the second position.

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