WO2023203149A1 - Heating, ventilation and/or air-conditioning device for a motor vehicle - Google Patents

Heating, ventilation and/or air-conditioning device for a motor vehicle Download PDF

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Publication number
WO2023203149A1
WO2023203149A1 PCT/EP2023/060328 EP2023060328W WO2023203149A1 WO 2023203149 A1 WO2023203149 A1 WO 2023203149A1 EP 2023060328 W EP2023060328 W EP 2023060328W WO 2023203149 A1 WO2023203149 A1 WO 2023203149A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixing chamber
air
shutter
sliding shutter
drive member
Prior art date
Application number
PCT/EP2023/060328
Other languages
French (fr)
Inventor
Philippe Pierres
Nestor-Ismael VARELA
Thierry Barbier
Cyril Gontier
Original Assignee
Valeo Systemes Thermiques
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2023203149A1 publication Critical patent/WO2023203149A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00664—Construction or arrangement of damper doors
    • B60H1/00692—Damper doors moved by translation, e.g. curtain doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00064—Air flow details of HVAC devices for sending air streams of different temperatures into the passenger compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00078—Assembling, manufacturing or layout details
    • B60H2001/00092—Assembling, manufacturing or layout details of air deflecting or air directing means inside the device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00114—Heating or cooling details
    • B60H2001/00135—Deviding walls for separate air flows

Definitions

  • the invention relates to the field of heating, ventilation and/or air conditioning devices for land, sea or air vehicles, for example for land motor vehicles.
  • Patent application FR3100311 describes a heating, ventilation and/or air conditioning device with a small vertical footprint, comprising an elongated housing housing an evaporator intended to cool and dehumidify the air flow and a radiator intended to heat part of the flow of air.
  • the air flow is introduced into the housing via at least one air inlet then is directed via a blower which comprises a motor and a bladed wheel.
  • the blower routes the air flow from the air inlet to at least one outlet, after it has been thermally treated by the heat exchangers.
  • This device includes a mixing flap making it possible to regulate the proportion of hot air flow and the proportion of cold air flow in a mixing chamber.
  • the mixing shutter corresponds to a sliding door type shutter, that is to say it includes a sliding door on which at least one rack is arranged.
  • a gear complementary to the rack is rotated around an axis by an actuator. Rotation of the gear causes the sliding door to move between two extreme positions.
  • the sliding door is configured to adopt an intermediate configuration.
  • the invention aims in particular to improve this type of heating, ventilation and/or air conditioning device.
  • the subject of the invention is therefore a heating, ventilation and/or air conditioning device for a vehicle, comprising in a housing of this device:
  • the mixing chamber comprising a lower wall and an upper wall opposite the lower wall, the lower wall being provided with a mixing opening between, d 'on the one hand, the cold and hot air channels and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air,
  • a distribution air channel arranged to bring air from the mixing chamber towards an air nozzle, in particular an air nozzle for feet opening into a passenger compartment of the vehicle, towards a floor of this vehicle,
  • this mixing flap being movable between a first extremal position blocking the cold air passage section of the mixing opening preventing the flow of cold air from the cold air channel from circulating towards the mixing chamber, and a second extremal position blocking the hot air passage section of the mixing opening preventing the flow of hot air from the hot air channel to circulate towards the mixing chamber, this movable flap being arranged to take an intermediate position between these extremal positions, intermediate position in which this flap defines a bypass channel distinct from the mixing chamber, and allowing cold air to circulate from the cold air channel to the hot air channel through this bypass channel, the mixing flap extending on the lower wall of the mixing chamber,
  • At least one air guide arranged to guide air leaving the bypass channel towards the distribution air channel, this air guide extending into the mixing chamber between the lower wall and the upper wall , and having an extent chosen so as to leave a passage of air from the mixing opening towards the upper wall of the mixing chamber.
  • height is defined as the dimension measured along a height axis which passes through the lower and upper walls of the mixing chamber. For example, a point that is halfway between the bottom and top walls of the mixing chamber is a point that is equidistant from these walls.
  • the air guide according to the invention is thus at an intermediate height between the lower and upper walls of the mixing chamber.
  • This air guide makes it possible to guide the air flow coming from the bypass channel towards the distribution channel, while reducing the temperature stratification in this air flow.
  • the air guide makes it possible to reduce the height of the air flow, and to separate this air flow from the volume on the other side of the air guide, which is facing the upper wall of the mixing chamber.
  • the invention thus makes it possible to improve the thermal performance of the device by avoiding this type of temperature stratification.
  • the air guide has a height which varies between the bypass channel and the distribution channel.
  • this air guide is closer to the lower wall of the mixing chamber than to the upper wall, at one end facing the bypass channel, and this air guide is closer to the upper wall of the chamber mixer than the lower wall, at one end facing the distribution channel.
  • the air guide has a curved profile with an inflection point.
  • the air guide has a planar profile.
  • the air guide comprises, at its end facing the bypass channel, a portion substantially parallel to the lower wall of the mixing chamber.
  • the air guide comprises, at its end facing the distribution channel, a portion substantially parallel to the upper wall of the mixing chamber.
  • the air guide has a strip shape, in particular with two parallel longitudinal edges.
  • this strip has a profile in side view with a point of inflection.
  • this air guide is made of a monolithic part.
  • the air guide is made in one piece with a wall of the housing, in particular being molded, in particular from a plastic material, with the wall of the housing.
  • the air guide has at least one fixing lug, in particular two fixing lugs, arranged to allow the fixing of this air guide on a side wall of the mixing chamber.
  • this or these fixing lugs are perpendicular to the strip.
  • this or these fixing lugs are arranged to allow fixing by screw, on the housing.
  • the distribution channel comprises a distribution flap rotating around an axis of rotation, in particular a butterfly type flap, to control the flow of air which enters this distribution channel , and the air guide has a width measured parallel to this axis of rotation of the shutter, which is less than the width of this distribution shutter.
  • the air guide has a width which is less than the width of the mixing flap.
  • the device comprises two sliding mixing flaps and two air guides each associated respectively with one of these mixing flaps.
  • the mixing shutter is a sliding shutter, also called a sliding door.
  • this sliding mixing shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the extremal positions according to a trajectory which runs along the longitudinal edges of the shutter.
  • the sliding shutter comprises, at each longitudinal end, two transverse projections perpendicular to the longitudinal edges, and projecting in the direction of the mixing opening.
  • the transverse projections come to bear on the lower wall when the shutter is in the extremal positions.
  • the transverse projections face respectively the passage section for the cold air channel and the passage section for the hot air channel of so as to form the bypass channel allowing air to flow from one passage section to the other.
  • the housing comprises a partition wall between the cold air channel and the hot air channel
  • the shutter comprises a main face between the two transverse projections, this main face being arranged to define the bypass channel which is between this main face and the partition wall.
  • this main face is set back from the partition wall to leave sufficient space to form the bypass channel.
  • the longitudinal edges of this main face are curved.
  • this main face of the shutter has a curvature whose center of curvature is directed towards the upper wall.
  • this main face of the shutter has a concavity directed towards the mixing chamber.
  • the device comprises a shutter drive member, arranged to cooperate with the shutter to move it between the extremal positions.
  • this drive member comprises a toothed wheel actuable in particular by an electric motor actuator.
  • the shutter comprises a rack along the longitudinal edge, in particular two racks each along a longitudinal edge, and the toothed wheel of the drive member cooperates with the rack of the pane to move this pane.
  • each rack comprises a strip of grooves.
  • the drive member comprises two toothed wheels connected by a connecting rod which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack of the shutter.
  • each shutter is associated with two toothed wheels which rotate simultaneously.
  • the housing comprises sliding grooves arranged to receive the longitudinal edges of the shutter and guide the shutter during sliding movements between the extremal positions.
  • these grooves generally have an arcuate shape.
  • these grooves serve as a rail for the shutter.
  • the movement between the extremal positions of the shutter is done substantially following a curved trajectory, in particular in an arc of a circle with a center facing the mixing chamber.
  • the drive member in particular the toothed wheel(s), is arranged on the side of the mixing flap facing the mixing chamber.
  • the air guide extends substantially from the toothed wheel to the distribution flap of the distribution channel.
  • the mixing chamber communicates with at least one first upper air outlet formed on the upper wall, and an upper sliding shutter is arranged to open or close this air outlet.
  • this first air outlet is arranged to communicate with a side or central ventilation nozzle thus making it possible to cool/heat a passenger of the vehicle.
  • the upper sliding shutter is of the sliding door type. According to one of the aspects of the invention, this upper sliding shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the open and closed positions of this first upper air outlet.
  • this upper sliding shutter has a curvature whose center of curvature is directed towards the upper wall.
  • this upper sliding shutter has a concavity directed away from the mixing chamber.
  • this shutter can be flat.
  • the device comprises a drive member for the upper sliding shutter, arranged to move it between the open and closed positions.
  • this drive member comprises a toothed wheel actuable in particular by an electric motor actuator.
  • the upper sliding shutter comprises a rack along the longitudinal edge, in particular two racks each along a longitudinal edge, and the toothed wheel of the drive member cooperates with the shutter rack to move this upper sliding shutter.
  • each rack comprises a strip of grooves.
  • the drive member comprises two toothed wheels connected by a connecting rod which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack of the upper sliding shutter.
  • the housing comprises sliding grooves arranged to receive the longitudinal edges of the upper sliding shutter and guide the shutter during sliding movements.
  • these grooves generally have an arcuate shape.
  • these grooves serve as a rail for the shutter.
  • the movement of the upper sliding shutter takes place substantially along an arc-shaped trajectory with a center turned to I.
  • the drive member in particular the toothed wheel(s), is arranged on the side of the upper sliding shutter, opposite the mixing chamber.
  • toothed wheel(s) are outside the mixing chamber, which makes it possible to avoid obstructing the air flow in the mixing chamber, which makes it possible to improve the performance of the device.
  • the drive member in particular the toothed wheel(s), is housed in a cylindrical housing formed by the upper wall.
  • the drive member of this upper sliding shutter is arranged along a structural beam of the vehicle, in particular a structural beam of the dashboard.
  • the mixing chamber communicates with a second upper air outlet formed on the upper wall, in particular configured to direct the air flow towards a defrosting nozzle of a windshield of the vehicle.
  • this second upper air outlet comprises a flap, in particular a pivoting flap, arranged to regulate the air flow which passes through this second air outlet.
  • the first and second upper air outlets are arranged on the same side of the upper sliding shutter, in particular on the same side of the associated drive member, unlike an arrangement in which the first and second upper air outlets would be arranged on either side of the sliding shutter or the drive member.
  • the first and second upper air outlets are arranged relative to each other so that the upper sliding shutter approaches the second air outlet when this shutter moves to the closed position of the first air outlet.
  • the first and second upper air outlets have, at least for some of them, a rectangular section.
  • the mixing chamber thus communicates with, on the one hand, the distribution channel which in particular directs the air towards an air nozzle for feet, and, on the other hand, with the first and second upper air outlets.
  • the distribution channel which in particular directs the air towards an air nozzle for feet, on the one hand, and the first and second upper air outlets, on the other hand , are arranged on either side of the upper sliding shutter.
  • the trajectories of the mixing flap and the upper sliding shutter are substantially parallel.
  • the device comprises a plurality of heat exchangers housed in the housing.
  • heat exchangers there are in particular at least one evaporator and one condenser.
  • the invention also relates, independently or in combination with the above, to a heating, ventilation and/or air conditioning device for a vehicle, comprising in a housing of this device:
  • the mixing chamber arranged downstream of the cold air channel and the hot air channel so that a flow of cold air coming from the cold air channel and a flow of hot air coming from the channel hot air can mix in this mixing chamber
  • the mixing chamber comprising a lower wall and an upper wall opposite the lower wall, the lower wall being provided with a mixing opening between, on the one hand, the channels of cold and hot air and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air channel, - at least one sliding shutter arranged to control a flow of air which circulates in this mixing chamber,
  • a drive member for the sliding shutter comprising in particular a toothed wheel, this drive member being arranged on the side of the sliding shutter, opposite the mixing chamber.
  • this sliding shutter drive member is outside the mixing chamber, which avoids hindering the air flows inside this mixing chamber.
  • the invention thus makes it possible to improve the performance of the heating, ventilation and/or air conditioning device.
  • the mixing chamber communicates with at least one first upper air outlet formed on the upper wall, and the sliding shutter is an upper sliding shutter arranged to open or close this outlet. air.
  • this first air outlet is arranged to communicate with a side or central ventilation nozzle thus making it possible to cool/heat a passenger of the vehicle.
  • this upper sliding shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the open and closed positions of this first upper air outlet.
  • this upper sliding shutter has a curvature whose center of curvature is towards the upper wall of the mixing chamber.
  • this shutter can be flat.
  • the drive member comprises a toothed wheel actuable in particular by an electric motor actuator.
  • the upper sliding shutter comprises a rack along a longitudinal edge, in particular two racks each along a longitudinal edge, and each toothed wheel of the drive member cooperates with the shutter rack to move this upper sliding shutter.
  • each rack comprises a strip of grooves.
  • the drive member comprises two toothed wheels connected by a connecting rod which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack of the upper sliding shutter.
  • the housing comprises sliding grooves arranged to receive the longitudinal edges of the upper sliding shutter and guide the shutter during sliding movements.
  • these grooves generally have an arcuate shape.
  • these grooves serve as a rail for the shutter.
  • the movement of the upper sliding shutter takes place substantially along an arcuate trajectory with a center facing away from the mixing chamber, in other words towards the outside of the housing.
  • the drive member in particular the toothed wheel(s), is housed in a cylindrical housing formed by the upper wall.
  • the drive member of this upper sliding shutter is arranged along a structural beam of the vehicle, in particular a structural beam of the dashboard.
  • the invention also relates, independently or in combination with the above, to a heating, ventilation and/or air conditioning device for a vehicle, comprising in a housing of this device:
  • the mixing chamber comprising a lower wall and an upper wall opposite the lower wall, the lower wall being provided with a mixing opening between, on the one hand, the channels of cold air and hot and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air channel,
  • this shutter comprising a main face which has a curvature whose center of curvature is directed towards the upper wall of the mixing chamber.
  • the mixing chamber communicates with at least one first upper air outlet formed on the upper wall, and the sliding shutter is an upper sliding shutter arranged to open or close this outlet. air.
  • this first air outlet is arranged to communicate with a side or central ventilation nozzle thus making it possible to cool/heat a passenger of the vehicle.
  • this upper sliding shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the open and closed positions of this first upper air outlet.
  • the device comprises a drive member for the sliding shutter, comprising in particular a toothed wheel, this drive member being arranged on the side of the sliding shutter, opposite the mixing chamber.
  • the upper sliding shutter comprises a rack along a longitudinal edge, in particular two racks each along a longitudinal edge, and each toothed wheel of the drive member cooperates with the shutter rack to move this upper sliding shutter.
  • the device further comprises a mobile mixing flap arranged to control the flow of cold air and the flow of hot air entering the mixing chamber, this mixing flap being mobile between a first end position blocking the cold air passage section of the mixing opening preventing the flow of cold air from the cold air channel from circulating towards the mixing chamber, and a second end position blocking the hot air passage section of the mixing opening preventing the hot air flow from the hot air channel to flow to the mixing chamber.
  • the movable mixing flap comprises a main face which has a curvature whose center of curvature is directed towards the upper wall of the mixing chamber.
  • the trajectories of the mixing flap and the upper sliding shutter are substantially parallel.
  • the trajectories of the mixing flap and the upper sliding shutter are curved.
  • the invention also relates, independently or in combination with the above, to a heating, ventilation and/or air conditioning device for a vehicle, comprising in a housing of this device:
  • the mixing chamber arranged downstream of the cold air channel and the hot air channel so that a flow of cold air coming from the cold air channel and a flow of hot air coming from the channel hot air can mix in this mixing chamber
  • the mixing chamber comprising a lower wall and an upper wall opposite the lower wall, the lower wall being provided with a mixing opening between, on the one hand, the channels of cold and hot air and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air channel
  • the chamber mixing valve communicates with at least one first upper air outlet formed on the upper wall, and an upper sliding shutter is arranged to open or close this air outlet, this first air outlet being arranged in particular to communicate with a nozzle side or central ventilation thus making it possible to cool/heat a passenger of the vehicle, in which the mixing chamber communicates with a second upper air outlet formed on the upper wall, in particular configured to direct the air flow towards a nozzle of defrosting a vehicle windshield, and in which the first and second upper upper air
  • the first and second upper air outlets are arranged relative to each other so that the upper sliding shutter approaches the second air outlet when this shutter moves to the closed position of the first air outlet.
  • the first and second upper air outlets have, at least for some of them, a rectangular section.
  • the mixing chamber thus communicates with, on the one hand, the distribution channel which in particular directs the air towards an air nozzle for feet, and, on the other hand, with the first and second upper air outlets.
  • the distribution channel which in particular directs the air towards an air nozzle for feet, on the one hand, and the first and second upper air outlets, on the other hand , are arranged on either side of the upper sliding shutter.
  • the upper sliding shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the open and closed positions of this first upper air outlet.
  • this upper sliding shutter has a curvature whose center of curvature is directed towards the upper wall.
  • the device comprises a drive member for the upper sliding shutter, arranged to move it between the open and closed positions, this drive member comprising a toothed wheel actuable in particular by an actuator with electric motor.
  • the upper sliding shutter comprises a rack along the longitudinal edge, in particular two racks each along a longitudinal edge, and the toothed wheel of the drive member cooperates with the shutter rack to move this upper sliding shutter.
  • the second upper air outlet comprises a flap, in particular a pivoting flap, arranged to regulate the air flow which passes through this second air outlet.
  • FIG. 1 illustrates a sectional view of a part of the heating, ventilation and/or air conditioning device according to an exemplary embodiment of the invention
  • FIG. 2 illustrates a perspective view of part of the heating, ventilation and/or air conditioning device of Figure 1;
  • FIG. 3 illustrates a perspective view of the mixing flap and the associated drive member of the heating, ventilation and/or air conditioning device of Figure 1;
  • FIG. 4 illustrates a perspective view of the upper shutter and the associated drive member of the heating, ventilation and/or air conditioning device of Figure 1.
  • upstream and downstream refer to the flow of an air flow circulating within the heating, ventilation and/or air conditioning device.
  • Figures 1 and 2 show a heating, ventilation and/or air conditioning device 1, comprising a housing 2 which houses heat exchangers.
  • an evaporator 4 intended to cool and dehumidify an air flow F1 which passes through it
  • a heater 6 intended to heat an air flow F2 which passes through it.
  • the heating, ventilation and/or air conditioning device 1 comprises a motor-fan group, not shown, which allows air to be routed to the heat exchangers 4 and 6.
  • the device 1 further comprises: a cold air channel 7 in which the air flow F1 can circulate, - a hot air channel 8 in which the air flow F2 can circulate,
  • a mixing chamber 9 arranged downstream of the cold air channel 7 and the hot air channel 8 so that a flow of cold air F1 coming from the cold air channel 7 and a flow of hot air F2 coming from the hot air channel 8 can mix in this mixing chamber 9.
  • the mixing chamber 9 comprises a lower wall 10 and an upper wall 11 opposite the lower wall 10, the lower wall 10 being provided with a mixing opening 12 between, on the one hand, the cold and hot air channels 7 and 8 and, on the other hand, the mixing chamber 9, this mixing opening 12 comprising a passage section 14 for the cold air channel 7 and a passage section 15 for the hot air channel 8.
  • the housing 2 comprises a distribution air channel 16 arranged to bring air from the mixing chamber 9 towards an air nozzle for feet, not shown, opening into a passenger compartment of the vehicle, towards a floor of this vehicle .
  • a mobile mixing shutter 20 is also provided, arranged to control the cold air flow F1 and the hot air flow F2 entering the mixing chamber 9.
  • This mixing flap 20 is movable between a first end position blocking the cold air passage section 14 of the mixing opening 12 preventing the cold air flow F1 of the cold air channel 7 from circulating towards the mixing chamber. mixing 9, and a second extreme position blocking the hot air passage section 15 of the mixing opening 12 preventing the flow of hot air F2 from the hot air channel 8 from circulating towards the mixing chamber 9.
  • This movable flap 20 is arranged to take an intermediate position between these extremal positions, an intermediate position in which this flap 20 defines a bypass channel 21 distinct from the mixing chamber, and allowing cold air to circulate from the mixing channel. cold air 7 towards the hot air channel 8 through this bypass channel 21, as illustrated by arrow F3.
  • the mixing flap 20 extends over the lower wall 10 of the mixing chamber 9.
  • the device 1 further comprises an air guide 22 arranged to guide air leaving the bypass channel 21 towards the distribution air channel 16, this air guide 22 extending in the mixing chamber 9 between the lower wall 10 and the upper wall 11, and having an extent chosen so as to leave a passage of air from the mixing opening 12 towards the upper wall 11 of mixing chamber 9.
  • the air flow F1 which has been cooled by the evaporator 4 is separated from the heater 6 by a partition 25, so that the cold air flow F1 is not heated by the hot air flow, when this does not is not desirable.
  • the height is defined as the dimension measured along a height axis Z which passes through the lower 10 and upper 11 walls of the mixing chamber 9. This Z axis corresponds to the vertical when the device 1 is mounted on the vehicle.
  • the air guide 22 is thus at an intermediate height between the lower 10 and upper 11 walls of the mixing chamber 9.
  • This air guide 22 makes it possible to guide the air flow F3 coming from the bypass channel 21 towards the distribution channel 16, while reducing the temperature stratification in this air flow. In fact, the air guide 22 makes it possible to reduce the height of the air flow, and to separate this air flow from the volume on the other side of the air guide 22.
  • the air guide 22 has a height which varies between the bypass channel 21 and the distribution channel 16.
  • this air guide 22 is closer to the lower wall 10 of the mixing chamber 9 than to the upper wall 11, at one end facing the bypass channel 21, and this air guide 22 is more close to the upper wall 11 of the mixing chamber 9 than to the lower wall 10, at one end facing the distribution channel 16.
  • the air guide 22 has a curved profile with an inflection point, as can be seen in Figure 1.
  • the air guide 22 comprises, at its end facing the bypass channel 21, a portion 27 substantially parallel to the lower wall 10 of the mixing chamber 9.
  • the air guide 22 comprises, at its end facing the distribution channel, a portion 28 substantially parallel to the upper wall 11 of the mixing chamber 9.
  • the air guide 22 has a strip shape with two parallel longitudinal edges 29, and is made of a monolithic piece.
  • the air guide 22 has two fixing lugs 30 arranged to allow the fixing of this air guide on a side wall 31 of the mixing chamber 9.
  • fixing lugs 30 are perpendicular to the strip of the air guide 22, and are arranged to allow fixing by screw.
  • the air guide 22 is made of molding with a portion of the housing 2.
  • the distribution channel 16 comprises a distribution flap 32 of the butterfly type, movable around an axis of rotation R1 to control the air flow which enters this distribution channel 16, and the air guide 22 has a width measured parallel to this axis of rotation R1 of the flap 32, which is less than the width of this distribution flap 32.
  • the air guide 22 has a width which is less than the width of the mixing flap 20.
  • the device 1 comprises two sliding mixing flaps 20, each on one side of the housing 2, and two air guides 22 each associated respectively with one of these mixing flaps 20.
  • this sliding mixing flap 20 has two parallel longitudinal edges 34 and the flap 20 is arranged to be able to slide between the extremal positions according to a trajectory which runs along these longitudinal edges 34.
  • the sliding shutter 20 comprises, at each longitudinal end, two transverse projections 35 perpendicular to the longitudinal edges 34, and projecting in the direction of the mixing opening 12.
  • the transverse projections 35 come to bear on the lower wall 10 when the flap 20 is in the extremal positions.
  • the transverse projections 35 face respectively the passage section 14 for the cold air channel and the passage section 15 for the hot air channel so as to form the bypass channel 21 by allowing air to flow from one passage section to the other.
  • the housing 2 comprises a partition wall 25 between the cold air channel 7 and the hot air channel 8, and the shutter 20 comprises a main face 37 between the two transverse projections 35, this main face 37 being arranged to define the bypass channel 21 which is between this main face 37 and the partition wall 25.
  • this main face 37 is set back from the partition wall 25 to leave sufficient space to form the bypass channel 21.
  • the longitudinal edges 34 of this main face 37 are curved.
  • This main face 37 of the shutter has a curvature whose center of curvature is directed towards the upper wall 11.
  • this main face 37 of the shutter has a concavity directed towards the mixing chamber 9.
  • the device 1 comprises a shutter drive member 38, arranged to cooperate with the shutter 20 to move it between the extremal positions.
  • the drive member 38 comprises two toothed wheels 39 connected by a connecting rod 40 which forms a common axis of rotation R2 of the wheels, and each toothed wheel 39 cooperates with a rack 42 of the shutter 20.
  • the shutter 20 comprises two racks 42 each along a longitudinal edge 34, and the toothed wheel 39 of the drive member 38 cooperates with the rack 42 of the shutter to move this shutter 20.
  • Each rack 42 includes a strip of grooves 43.
  • each flap 20 is associated with two toothed wheels 39 which rotate simultaneously.
  • the housing 2 comprises sliding grooves 44, or sliding grooves, arranged to receive the longitudinal edges 34 of the shutter and guide the flap 20 during sliding movements between the extremal positions.
  • These grooves 44 generally have an arcuate shape, and serve as a rail for the shutter 20.
  • the movement between the extremal positions of the flap 20 takes place substantially along an arcuate trajectory with a center turned towards the mixing chamber 9.
  • the drive member 38 including the toothed wheels 39 is arranged on the side of the mixing flap 20 facing the mixing chamber 9.
  • the air guide 22 extends substantially from the toothed wheel 39 to the distribution flap 32 of the distribution channel 16.
  • the mixing chamber 9 communicates with first upper air outlets 47 formed on the upper wall 11, and an upper sliding shutter 48 is arranged to open or close these air outlets 47.
  • These first air outlets 47 are arranged to communicate with a side or central ventilation nozzle, thus making it possible to cool/heat a passenger of the vehicle.
  • the upper sliding shutter 48 is of the sliding door type.
  • This upper sliding shutter 48 has two parallel longitudinal edges 49 and the shutter 48 is arranged to be able to slide between the open and closed positions of these first upper air outlets 47.
  • This upper sliding shutter 48 has a curvature whose center of curvature is directed towards the upper wall 11.
  • this flap 48 comprises a main face 68 which has a curvature whose center of curvature is directed towards the upper wall 11 of the mixing chamber 9.
  • this upper sliding shutter 48 has a concavity directed opposite the mixing chamber 9.
  • the device 1 comprises a drive member 50 of the upper sliding shutter 48, arranged to move it between the open and closed positions.
  • This drive member 50 comprises two toothed wheels 51 connected by a connecting rod 52 which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack 53 of the upper sliding shutter.
  • the upper sliding shutter 48 comprises two racks 53 each along a longitudinal edge 49, and the toothed wheel 51 of the drive member cooperates with the rack 53 of the shutter to move this upper sliding shutter 48.
  • Each rack 53 includes a strip of grooves 54.
  • the housing 2 includes sliding grooves 55 arranged to receive the longitudinal edges 49 of the upper sliding shutter and guide the shutter during sliding movements.
  • These grooves 55 generally have an arcuate shape, and serve as a rail for the shutter 48.
  • the movement of the upper sliding shutter 48 takes place substantially along an arcuate trajectory with a center facing away from the mixing chamber 9, in other words towards the outside of the housing 2.
  • the drive member 50 including the toothed wheels 51 is arranged on the side of the upper sliding shutter 48, opposite the mixing chamber 9.
  • toothed wheels 51 are outside the mixing chamber 9, which makes it possible not to obstruct the air flows in the mixing chamber 9, which makes it possible to improve the performance of the device 1.
  • the drive member 50 including the toothed wheels 51 is housed in a cylindrical housing 56 formed by the upper wall 11.
  • the drive member 50 of this upper sliding shutter 48 is arranged along a structural beam of the vehicle, in particular a structural beam of the dashboard, not shown.
  • the mixing chamber 9 communicates with a second upper air outlet 60 formed on the upper wall 11 and configured to direct the air flow towards a defrosting nozzle of a windshield of the vehicle.
  • This second upper air outlet 60 comprises a pivoting flap 61 arranged to regulate the air flow which passes through this second air outlet 60.
  • the first and second upper air outlets 47 and 60 are arranged on the same side of the upper sliding shutter 48, and on the same side of the associated drive member 50, unlike an arrangement in which the first and second upper air outlets 47 and 60 would be arranged on either side of the sliding shutter 48.
  • the first and second upper air outlets 47 and 60 are arranged relative to each other so that the upper sliding shutter 48 approaches the second air outlet 60 when this shutter 48 moves towards the position closed from the first air outlet.
  • the first and second upper air outlets 47 and 60 have, at least for some of them, a rectangular section.
  • the mixing chamber 9 thus communicates with, on the one hand, the distribution channel 16 which in particular directs the air towards an air nozzle for feet, and, on the other hand, with the first and second air outlets upper 47 and 60.
  • the distribution channel 16 which in particular directs the air towards an air nozzle for feet, on the one hand, and the first and second upper air outlets 47 and 60, on the other hand, are arranged on either side other of the upper sliding shutter 48.
  • the trajectories of the mixing flap 20 and the upper sliding shutter 48 are substantially parallel.

Abstract

Heating, ventilation and/or air conditioning device (1) for a vehicle, comprising, in a housing of this device (1), a cold air duct (7), a hot air duct (8), a mixing chamber (9) arranged downstream of the cold air duct (7) and the hot air duct (8) such that a cold air flow coming from the cold air duct (7) and a hot air flow coming from the hot air duct (8) can mix in this mixing chamber (9), the mixing chamber (9) having a bottom wall (10) and an upper wall (11) opposite to the bottom wall (10), the bottom wall (10) being provided with a mixing opening (12) between, on the one hand, the cold (7) and hot (8) air ducts and, on the other hand, the mixing chamber (9), this mixing opening (12) comprising a passage section for the cold air duct (7) and a passage section for the hot air duct (8), at least one sliding shutter arranged to control an air flow which circulates in this mixing chamber (9), a member for driving the sliding shutter, comprising in particular a toothed wheel, this driving member being arranged on the opposite side of the sliding shutter to the mixing chamber (9).

Description

DISPOSITIF DE CHAUFFAGE, VENTILATION ET/OU CLIMATISATION POUR VÉHICULE AUTOMOBILE HEATING, VENTILATION AND/OR AIR CONDITIONING DEVICE FOR MOTOR VEHICLES
L’invention concerne le domaine des dispositifs de chauffage, ventilation et/ou climatisation pour véhicule terrestre, maritime ou aérien, par exemple pour véhicule automobile terrestre. The invention relates to the field of heating, ventilation and/or air conditioning devices for land, sea or air vehicles, for example for land motor vehicles.
La demande de brevet FR3100311 décrit un dispositif de chauffage, ventilation et/ou climatisation de faible encombrement vertical, comprenant un boîtier de forme allongée logeant un évaporateur destiné à refroidir et déshumidifier le flux d’air et un radiateur destiné à réchauffer une partie du flux d’air. Le flux d’air est introduit dans le boîtier par l’intermédiaire d’au moins une entrée d’air puis est dirigé par l’intermédiaire d’un pulseur qui comprend pour cela un moteur et une roue à pales. Le pulseur achemine le flux d’air depuis l’entrée d’air jusqu’à au moins une sortie, après que celui-ci ait été traité thermiquement par les échangeurs de chaleur. Ce dispositif comprend un volet de mixage permettant de réguler la proportion de flux d’air chaud et la proportion de flux d’air froid dans une chambre de mixage. Le volet de mixage correspond à un volet de type porte coulissante, c'est-à-dire qu’il comprend une porte coulissante sur laquelle est agencée au moins une crémaillère. Afin de mettre le volet de mixage en mouvement, un engrenage complémentaire à la crémaillère est mis en rotation autour d’un axe par un actionneur. La rotation de l’engrenage entraîne le mouvement de la porte coulissante entre deux positions extrêmes. La porte coulissante est configurée pour adopter une configuration intermédiaire. Patent application FR3100311 describes a heating, ventilation and/or air conditioning device with a small vertical footprint, comprising an elongated housing housing an evaporator intended to cool and dehumidify the air flow and a radiator intended to heat part of the flow of air. The air flow is introduced into the housing via at least one air inlet then is directed via a blower which comprises a motor and a bladed wheel. The blower routes the air flow from the air inlet to at least one outlet, after it has been thermally treated by the heat exchangers. This device includes a mixing flap making it possible to regulate the proportion of hot air flow and the proportion of cold air flow in a mixing chamber. The mixing shutter corresponds to a sliding door type shutter, that is to say it includes a sliding door on which at least one rack is arranged. In order to set the mixing flap in motion, a gear complementary to the rack is rotated around an axis by an actuator. Rotation of the gear causes the sliding door to move between two extreme positions. The sliding door is configured to adopt an intermediate configuration.
L’invention a notamment pour but d’améliorer ce type de dispositif de chauffage, ventilation et/ou climatisation. The invention aims in particular to improve this type of heating, ventilation and/or air conditioning device.
L’invention a ainsi pour objet un dispositif de chauffage, ventilation et/ou climatisation pour véhicule, comprenant dans un boitier de ce dispositif : The subject of the invention is therefore a heating, ventilation and/or air conditioning device for a vehicle, comprising in a housing of this device:
- un canal d’air froid, - a cold air channel,
- un canal d’air chaud, - a hot air channel,
- une chambre de mixage disposé en aval du canal d’air froid et du canal d’air chaud de sorte qu’un flux d’air froid provenant du canal d’air froid et un flux d’air - chaud provenant du canal d’air chaud puissent se mélanger dans cette chambre de mixage, la chambre de mixage comportant une paroi inférieure et une paroi supérieure opposée à la paroi inférieure, la paroi inférieure étant pourvue d’une ouverture de mixage entre, d’une part, les canaux d’air froid et chaud et, d’autre part, la chambre de mixage, cette ouverture de mixage comprenant une section de passage pour le canal d’air froid et une section de passage pour le canal d’air chaud, - a mixing chamber arranged downstream of the cold air channel and the hot air channel so that a flow of cold air coming from the cold air channel and an air flow - hot coming from the hot air channel can mix in this mixing chamber, the mixing chamber comprising a lower wall and an upper wall opposite the lower wall, the lower wall being provided with a mixing opening between, d 'on the one hand, the cold and hot air channels and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air,
- un canal d’air de distribution agencé pour amener de l’air de la chambre de mixage vers une buse d’air, notamment une buse d’air pour pieds débouchant dans un habitacle du véhicule, vers un plancher de ce véhicule, - a distribution air channel arranged to bring air from the mixing chamber towards an air nozzle, in particular an air nozzle for feet opening into a passenger compartment of the vehicle, towards a floor of this vehicle,
- un volet de mixage mobile agencé pour contrôler le flux d’air froid et le flux d’air chaud entrant vers la chambre de mixage, ce volet de mixage étant mobile entre une première position extrémale bloquant la section de passage d’air froid de l’ouverture de mixage empêchant le flux d’air froid du canal d’air froid de circuler vers la chambre de mixage, et une deuxième position extrémale bloquant la section de passage d’air chaud de l’ouverture de mixage empêchant le flux d’air chaud du canal d’air chaud de circuler vers la chambre de mixage, ce volet mobile étant agencé pour prendre une position intermédiaire entre ces positions extrémales, position intermédiaire dans laquelle ce volet définit un canal de contournement distinct de la chambre de mixage, et permettant à de l’air froid de circuler du canal d’air froid vers le canal d’air chaud à travers ce canal de contournement, le volet de mixage s’étendant sur la paroi inférieure de la chambre de mixage, - a movable mixing flap arranged to control the flow of cold air and the flow of hot air entering the mixing chamber, this mixing flap being movable between a first extremal position blocking the cold air passage section of the mixing opening preventing the flow of cold air from the cold air channel from circulating towards the mixing chamber, and a second extremal position blocking the hot air passage section of the mixing opening preventing the flow of hot air from the hot air channel to circulate towards the mixing chamber, this movable flap being arranged to take an intermediate position between these extremal positions, intermediate position in which this flap defines a bypass channel distinct from the mixing chamber, and allowing cold air to circulate from the cold air channel to the hot air channel through this bypass channel, the mixing flap extending on the lower wall of the mixing chamber,
- au moins un guide d’air agencé pour guider de l’air sortant du canal de contournement vers le canal d’air de distribution, ce guide d’air s’étendant dans la chambre de mixage entre la paroi inférieure et la paroi supérieure, et présentant une étendue choisie de sorte à laisser un passage d’air depuis l’ouverture de mixage vers la paroi supérieure de la chambre de mixage. - at least one air guide arranged to guide air leaving the bypass channel towards the distribution air channel, this air guide extending into the mixing chamber between the lower wall and the upper wall , and having an extent chosen so as to leave a passage of air from the mixing opening towards the upper wall of the mixing chamber.
Dans la présente invention, on définit la hauteur comme la dimension mesurée suivant un axe de hauteur qui passe par les parois inférieure et supérieure de la chambre de mixage. Par exemple, un point qui est à mi-hauteur entre les parois inférieure et supérieure de la chambre de mixage est un point qui est à équidistance de ces parois. Le guide d’air selon l’invention est ainsi à une hauteur intermédiaire entre les parois inférieure et supérieure de la chambre de mixage In the present invention, height is defined as the dimension measured along a height axis which passes through the lower and upper walls of the mixing chamber. For example, a point that is halfway between the bottom and top walls of the mixing chamber is a point that is equidistant from these walls. The air guide according to the invention is thus at an intermediate height between the lower and upper walls of the mixing chamber.
Ce guide d’air selon l’invention permet de guider le flux d’air en provenance du canal de contournement vers le canal de distribution, tout en réduisant la stratification de températures dans ce flux d’air. En effet, le guide d’air permet de réduire la hauteur du flux d’air, et de séparer ce flux d’air du volume de l’autre côté du guide d’air, qui est en regard de la paroi supérieure de la chambre de mixage. This air guide according to the invention makes it possible to guide the air flow coming from the bypass channel towards the distribution channel, while reducing the temperature stratification in this air flow. In fact, the air guide makes it possible to reduce the height of the air flow, and to separate this air flow from the volume on the other side of the air guide, which is facing the upper wall of the mixing chamber.
Ceci permet d’avoir une température plus homogène dans ce flux d’air et d’éviter une stratification de températures qui serait indésirable. L’invention permet ainsi d’améliorer les performances thermiques du dispositif en évitant ce type de stratification de températures. This makes it possible to have a more uniform temperature in this air flow and to avoid a stratification of temperatures which would be undesirable. The invention thus makes it possible to improve the thermal performance of the device by avoiding this type of temperature stratification.
Selon l’un des aspects de l’invention, le guide d’air présente une hauteur qui varie entre le canal de contournement et le canal de distribution. According to one of the aspects of the invention, the air guide has a height which varies between the bypass channel and the distribution channel.
Notamment ce guide d’air est plus proche de la paroi inférieure de la chambre de mixage que de la paroi supérieure, à une extrémité en regard du canal de contournement, et ce guide d’air est plus proche de la paroi supérieure de la chambre de mixage que de la paroi inférieure, à une extrémité en regard du canal de distribution. In particular this air guide is closer to the lower wall of the mixing chamber than to the upper wall, at one end facing the bypass channel, and this air guide is closer to the upper wall of the chamber mixer than the lower wall, at one end facing the distribution channel.
Selon l’un des aspects de l’invention, le guide d’air présente un profil courbe avec un point d’inflexion. En variante, le guide d’air présente un profil plan. According to one of the aspects of the invention, the air guide has a curved profile with an inflection point. Alternatively, the air guide has a planar profile.
Selon l’un des aspects de l’invention, le guide d’air comporte, à son extrémité en regard du canal de contournement, une portion sensiblement parallèle à la paroi inférieure de la chambre de mixage. According to one of the aspects of the invention, the air guide comprises, at its end facing the bypass channel, a portion substantially parallel to the lower wall of the mixing chamber.
Selon l’un des aspects de l’invention, le guide d’air comporte, à son extrémité en regard du canal de distribution, une portion sensiblement parallèle à la paroi supérieure de la chambre de mixage. According to one of the aspects of the invention, the air guide comprises, at its end facing the distribution channel, a portion substantially parallel to the upper wall of the mixing chamber.
Selon l’un des aspects de l’invention, le guide d’air présente une forme de bande, notamment avec deux bords longitudinaux parallèles. According to one of the aspects of the invention, the air guide has a strip shape, in particular with two parallel longitudinal edges.
Selon l’un des aspects de l’invention, cette bande présente un profil en vue de côté avec un point d’inflexion. Selon l’un des aspects de l’invention, ce guide d’air est fait d’une pièce monolithique. De préférence, le guide d’air est réalisé d’un seul tenant avec une paroi du boîtier, notamment étant issu de moulage, notamment d’une matière plastique, avec la paroi du boîtier. According to one of the aspects of the invention, this strip has a profile in side view with a point of inflection. According to one of the aspects of the invention, this air guide is made of a monolithic part. Preferably, the air guide is made in one piece with a wall of the housing, in particular being molded, in particular from a plastic material, with the wall of the housing.
En variante, le guide d’air compote au moins une patte de fixation, notamment deux pattes de fixation, agencée pour permettre la fixation de ce guide d’air sur une paroi latérale de la chambre de mixage. Alternatively, the air guide has at least one fixing lug, in particular two fixing lugs, arranged to allow the fixing of this air guide on a side wall of the mixing chamber.
Selon l’un des aspects de l’invention, ce ou ces pattes de fixation sont perpendiculaires à la bande. According to one of the aspects of the invention, this or these fixing lugs are perpendicular to the strip.
Selon l’un des aspects de l’invention, ce ou ces pattes de fixation sont agencées pour permettre une fixation par vis, sur le boîtier. According to one of the aspects of the invention, this or these fixing lugs are arranged to allow fixing by screw, on the housing.
Selon l’un des aspects de l’invention, le canal de distribution comprend un volet de distribution rotatif autour d’un axe de rotation, notamment un volet de type papillon, pour contrôler le flux d’air qui entre dans ce canal de distribution, et le guide d’air présente une largeur mesurée parallèlement à cet axe de rotation du volet, qui est inférieure à la largeur de ce volet de distribution. According to one of the aspects of the invention, the distribution channel comprises a distribution flap rotating around an axis of rotation, in particular a butterfly type flap, to control the flow of air which enters this distribution channel , and the air guide has a width measured parallel to this axis of rotation of the shutter, which is less than the width of this distribution shutter.
Selon l’un des aspects de l’invention, le guide d’air présente une largeur qui est inférieure à la largeur du volet de mixage. According to one of the aspects of the invention, the air guide has a width which is less than the width of the mixing flap.
Selon l’un des aspects de l’invention, le dispositif comprend deux volets de mixage coulissants et deux guides d’air chacun associé respectivement à l’un de ces volets de mixage. According to one of the aspects of the invention, the device comprises two sliding mixing flaps and two air guides each associated respectively with one of these mixing flaps.
Selon l’un des aspects de l’invention, le volet de mixage est un volet coulissant, encore appelée porte coulissante. According to one of the aspects of the invention, the mixing shutter is a sliding shutter, also called a sliding door.
Selon l’un des aspects de l’invention, ce volet de mixage coulissant présente deux bords longitudinaux parallèles et le volet est agencé pour pouvoir coulisser entre les positions extrémales selon une trajectoire qui longe les bords longitudinaux du volet. According to one of the aspects of the invention, this sliding mixing shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the extremal positions according to a trajectory which runs along the longitudinal edges of the shutter.
Selon l’un des aspects de l’invention, le volet coulissant comporte, à chaque extrémité longitudinale, deux saillies transversales perpendiculaires aux bords longitudinaux, et faisant saillie en direction de l’ouverture de mixage. Selon l’un des aspects de l’invention, les saillies transversales viennent en appui sur la paroi inférieure lorsque le volet est dans les positions extrémales. According to one of the aspects of the invention, the sliding shutter comprises, at each longitudinal end, two transverse projections perpendicular to the longitudinal edges, and projecting in the direction of the mixing opening. According to one of the aspects of the invention, the transverse projections come to bear on the lower wall when the shutter is in the extremal positions.
Selon l’un des aspects de l’invention, dans la position intermédiaire du volet, les saillies transversales sont en regard respectivement de la section de passage pour le canal d’air froid et la section de passage pour le canal d’air chaud de sorte à former le canal de contournement permettant à de l’air de circuler d’une section de passage vers l’autre. According to one of the aspects of the invention, in the intermediate position of the shutter, the transverse projections face respectively the passage section for the cold air channel and the passage section for the hot air channel of so as to form the bypass channel allowing air to flow from one passage section to the other.
Selon l’un des aspects de l’invention, le boîtier comprend une cloison de séparation entre le canal d’air froid et le canal d’air chaud, et le volet comprend une face principale entre les deux saillies transversales, cette face principale étant agencée pour définir le canal de contournement qui est entre cette face principale et la cloison de séparation. According to one of the aspects of the invention, the housing comprises a partition wall between the cold air channel and the hot air channel, and the shutter comprises a main face between the two transverse projections, this main face being arranged to define the bypass channel which is between this main face and the partition wall.
Autrement dit, cette face principale se trouve en retrait de la cloison de séparation pour laisser un espace suffisant pour former le canal de contournement. In other words, this main face is set back from the partition wall to leave sufficient space to form the bypass channel.
Selon l’un des aspects de l’invention, les bords longitudinaux de cette face principale sont courbes. According to one of the aspects of the invention, the longitudinal edges of this main face are curved.
Selon l’un des aspects de l’invention, cette face principale du volet présente une courbure dont le centre de courbure est dirigé vers la paroi supérieure. According to one of the aspects of the invention, this main face of the shutter has a curvature whose center of curvature is directed towards the upper wall.
Autrement dit, cette face principale du volet présente une concavité dirigée vers la chambre de mixage. In other words, this main face of the shutter has a concavity directed towards the mixing chamber.
Selon l’un des aspects de l’invention, le dispositif comprend un organe d’entraînement du volet, agencé pour coopérer avec le volet pour le déplacer entre les positions extrémales. According to one of the aspects of the invention, the device comprises a shutter drive member, arranged to cooperate with the shutter to move it between the extremal positions.
Selon l’un des aspects de l’invention, cet organe d’entraînement comprend une roue dentée actionnable notamment par un actionneur à moteur électrique. According to one of the aspects of the invention, this drive member comprises a toothed wheel actuable in particular by an electric motor actuator.
Selon l’un des aspects de l’invention, le volet comprend une crémaillère le long du bord longitudinal, notamment deux crémaillères chacune le long d’un bord longitudinal, et la roue dentée de l’organe d’entraînement coopère avec la crémaillère du volet pour déplacer ce volet. According to one of the aspects of the invention, the shutter comprises a rack along the longitudinal edge, in particular two racks each along a longitudinal edge, and the toothed wheel of the drive member cooperates with the rack of the pane to move this pane.
Selon l’un des aspects de l’invention, chaque crémaillère comprend une bande de cannelures. Selon l’un des aspects de l’invention, l’organe d’entraînement comprend deux roues dentées reliées par une tige de liaison qui forme un axe de rotation commun des roues, et chaque roue dentée coopère avec une crémaillère du volet. According to one of the aspects of the invention, each rack comprises a strip of grooves. According to one of the aspects of the invention, the drive member comprises two toothed wheels connected by a connecting rod which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack of the shutter.
Ainsi, à chaque volet sont associées deux roues dentées qui tournent de manière simultanée. Thus, each shutter is associated with two toothed wheels which rotate simultaneously.
Selon l’un des aspects de l’invention, le boîtier comprend des rainures de coulissement agencées pour recevoir les bords longitudinaux du volet et guider le volet lors de déplacements de coulissement entre les positions extrémales. According to one of the aspects of the invention, the housing comprises sliding grooves arranged to receive the longitudinal edges of the shutter and guide the shutter during sliding movements between the extremal positions.
Selon l’un des aspects de l’invention, ces rainures présentent globalement une forme en arc de cercle. According to one of the aspects of the invention, these grooves generally have an arcuate shape.
Selon l’un des aspects de l’invention, ces rainures servent de rail pour le volet.According to one of the aspects of the invention, these grooves serve as a rail for the shutter.
Selon l’un des aspects de l’invention, le déplacement entre les positions extrémales du volet se fait suivant sensiblement une trajectoire courbe, notamment en arc de cercle avec un centre tourné vers la chambre de mixage.According to one of the aspects of the invention, the movement between the extremal positions of the shutter is done substantially following a curved trajectory, in particular in an arc of a circle with a center facing the mixing chamber.
Selon l’un des aspects de l’invention, l’organe d’entraînement, notamment la ou les roues dentées, est disposé du côté du volet de mixage tourné vers la chambre de mixage. According to one of the aspects of the invention, the drive member, in particular the toothed wheel(s), is arranged on the side of the mixing flap facing the mixing chamber.
Selon l’un des aspects de l’invention, le guide d’air s’étend sensiblement depuis la roue dentée jusqu’au volet de distribution du canal de distribution. According to one of the aspects of the invention, the air guide extends substantially from the toothed wheel to the distribution flap of the distribution channel.
Selon l’un des aspects de l’invention, la chambre de mixage communique avec au moins une première sortie d’air supérieure formée sur la paroi supérieure, et un volet coulissant supérieur est agencé pour ouvrir ou fermer cette sortie d’air.According to one of the aspects of the invention, the mixing chamber communicates with at least one first upper air outlet formed on the upper wall, and an upper sliding shutter is arranged to open or close this air outlet.
Selon l’un des aspects de l’invention, cette première sortie d’air est agencée pour communiquer avec une buse de ventilation latérale ou centrale permettant ainsi de refroidir/réchauffer un passager du véhicule. According to one of the aspects of the invention, this first air outlet is arranged to communicate with a side or central ventilation nozzle thus making it possible to cool/heat a passenger of the vehicle.
Selon l’un des aspects de l’invention, le volet coulissant supérieur est du type porte coulissante. Selon l’un des aspects de l’invention, ce volet coulissant supérieur présente deux bords longitudinaux parallèles et le volet est agencé pour pouvoir coulisser entre les positions ouverte et fermée de cette première sortie d’air supérieure. According to one of the aspects of the invention, the upper sliding shutter is of the sliding door type. According to one of the aspects of the invention, this upper sliding shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the open and closed positions of this first upper air outlet.
Selon l’un des aspects de l’invention, ce volet coulissant supérieur présente une courbure dont le centre de courbure est dirigé vers la paroi supérieure. According to one of the aspects of the invention, this upper sliding shutter has a curvature whose center of curvature is directed towards the upper wall.
Autrement dit, ce volet coulissant supérieur présente une concavité dirigée à l’opposé de la chambre de mixage. En variante, ce volet peut être plan. In other words, this upper sliding shutter has a concavity directed away from the mixing chamber. Alternatively, this shutter can be flat.
Selon l’un des aspects de l’invention, le dispositif comprend un organe d’entraînement du volet coulissant supérieur, agencé pour le déplacer entre les positions ouverte et fermée. According to one of the aspects of the invention, the device comprises a drive member for the upper sliding shutter, arranged to move it between the open and closed positions.
Selon l’un des aspects de l’invention, cet organe d’entraînement comprend une roue dentée actionnable notamment par un actionneur à moteur électrique. According to one of the aspects of the invention, this drive member comprises a toothed wheel actuable in particular by an electric motor actuator.
Selon l’un des aspects de l’invention, le volet coulissant supérieur comprend une crémaillère le long du bord longitudinal, notamment deux crémaillères chacune le long d’un bord longitudinal, et la roue dentée de l’organe d’entraînement coopère avec la crémaillère du volet pour déplacer ce volet coulissant supérieur. According to one of the aspects of the invention, the upper sliding shutter comprises a rack along the longitudinal edge, in particular two racks each along a longitudinal edge, and the toothed wheel of the drive member cooperates with the shutter rack to move this upper sliding shutter.
Selon l’un des aspects de l’invention, chaque crémaillère comprend une bande de cannelures. According to one of the aspects of the invention, each rack comprises a strip of grooves.
Selon l’un des aspects de l’invention, l’organe d’entraînement comprend deux roues dentées reliées par une tige de liaison qui forme un axe de rotation commun des roues, et chaque roue dentée coopère avec une crémaillère du volet coulissant supérieur. According to one of the aspects of the invention, the drive member comprises two toothed wheels connected by a connecting rod which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack of the upper sliding shutter.
Ainsi, à chaque volet coulissant supérieur sont associées deux roues dentées qui tournent de manière simultanée. Thus, two toothed wheels are associated with each upper sliding shutter which rotate simultaneously.
Selon l’un des aspects de l’invention, le boîtier comprend des rainures de coulissement agencées pour recevoir les bords longitudinaux du volet coulissant supérieur et guider le volet lors de déplacements de coulissement. According to one of the aspects of the invention, the housing comprises sliding grooves arranged to receive the longitudinal edges of the upper sliding shutter and guide the shutter during sliding movements.
Selon l’un des aspects de l’invention, ces rainures présentent globalement une forme en arc de cercle. According to one of the aspects of the invention, these grooves generally have an arcuate shape.
Selon l’un des aspects de l’invention, ces rainures servent de rail pour le volet. Selon l’un des aspects de l’invention, le déplacement du volet coulissant supérieur se fait suivant sensiblement une trajectoire en arc de cercle avec un centre tourné à ISelon l’un des aspects de l’invention, l’organe d’entraînement, notamment la ou les roues dentées, est disposé du côté du volet coulissant supérieur, opposé à la chambre de mixage. According to one aspect of the invention, these grooves serve as a rail for the shutter. According to one of the aspects of the invention, the movement of the upper sliding shutter takes place substantially along an arc-shaped trajectory with a center turned to I. According to one of the aspects of the invention, the drive member, in particular the toothed wheel(s), is arranged on the side of the upper sliding shutter, opposite the mixing chamber.
Ainsi la ou les roues dentées sont hors de la chambre de mixage, ce qui permet de ne pas faire obstacle aux flux d’air dans la chambre de mixage, ce qui permet d’améliorer les performances du dispositif. Thus the toothed wheel(s) are outside the mixing chamber, which makes it possible to avoid obstructing the air flow in the mixing chamber, which makes it possible to improve the performance of the device.
Selon l’un des aspects de l’invention, l’organe d’entraînement, notamment la ou les roues dentées, est logé dans un logement cylindrique formé par la paroi supérieure. According to one of the aspects of the invention, the drive member, in particular the toothed wheel(s), is housed in a cylindrical housing formed by the upper wall.
Selon l’un des aspects de l’invention, l’organe d’entraînement de ce volet coulissant supérieur est disposé le long d’une poutre structurelle du véhicule, notamment une poutre structurelle de la planche de bord. According to one of the aspects of the invention, the drive member of this upper sliding shutter is arranged along a structural beam of the vehicle, in particular a structural beam of the dashboard.
Selon l’un des aspects de l’invention, la chambre de mixage communique avec une deuxième sortie d’air supérieure formée sur la paroi supérieure, notamment configurée pour mener le flux d’air vers une buse de dégivrage d’un pare-brise du véhicule. According to one of the aspects of the invention, the mixing chamber communicates with a second upper air outlet formed on the upper wall, in particular configured to direct the air flow towards a defrosting nozzle of a windshield of the vehicle.
Selon l’un des aspects de l’invention, cette deuxième sortie d’air supérieure comprend un volet, notamment un volet pivotant, agencé pour réguler le flux d’air qui traverse cette deuxième sortie d’air. According to one of the aspects of the invention, this second upper air outlet comprises a flap, in particular a pivoting flap, arranged to regulate the air flow which passes through this second air outlet.
Selon l’un des aspects de l’invention, les première et deuxième sorties d’air supérieures sont disposées sur un même côté du volet coulissant supérieur, notamment sur un même côté de l’organe d’entraînement associé, à la différence d’une disposition dans laquelle les première et deuxième sorties d’air supérieures seraient disposées de part et d’autre du volet coulissant ou de l’organe d’entraînement. According to one of the aspects of the invention, the first and second upper air outlets are arranged on the same side of the upper sliding shutter, in particular on the same side of the associated drive member, unlike an arrangement in which the first and second upper air outlets would be arranged on either side of the sliding shutter or the drive member.
Selon l’un des aspects de l’invention, les première et deuxième sorties d’air supérieures sont disposées l’une par rapport à l’autre de sorte que le volet coulissant supérieur se rapproche de la deuxième sortie d’air lorsque ce volet se déplace vers la position fermée de la première sortie d’air. Selon l’un des aspects de l’invention, les première et deuxième sorties d’air supérieures présentent, au moins pour certaines d’entre elles, une section rectangulaire. According to one of the aspects of the invention, the first and second upper air outlets are arranged relative to each other so that the upper sliding shutter approaches the second air outlet when this shutter moves to the closed position of the first air outlet. According to one of the aspects of the invention, the first and second upper air outlets have, at least for some of them, a rectangular section.
Selon l’un des aspects de l’invention, la chambre de mixage communique ainsi avec, d’une part, le canal de distribution qui notamment dirige l’air vers une buse d’air pour pieds, et, d’autre part, avec les première et deuxième sorties d’air supérieures. According to one of the aspects of the invention, the mixing chamber thus communicates with, on the one hand, the distribution channel which in particular directs the air towards an air nozzle for feet, and, on the other hand, with the first and second upper air outlets.
Selon l’un des aspects de l’invention, le canal de distribution qui notamment dirige l’air vers une buse d’air pour pieds, d’une part, et les première et deuxième sorties d’air supérieures, d’autre part, sont disposés de part et d’autre du volet coulissant supérieur. According to one of the aspects of the invention, the distribution channel which in particular directs the air towards an air nozzle for feet, on the one hand, and the first and second upper air outlets, on the other hand , are arranged on either side of the upper sliding shutter.
Selon l’un des aspects de l’invention, les trajectoires du volet de mixage et du volet coulissant supérieur sont sensiblement parallèles. According to one of the aspects of the invention, the trajectories of the mixing flap and the upper sliding shutter are substantially parallel.
Selon l’un des aspects de l’invention, le dispositif comporte une pluralité d’échangeurs de chaleur logés dans le boîtier. According to one of the aspects of the invention, the device comprises a plurality of heat exchangers housed in the housing.
Parmi ces échangeurs de chaleur, figurent notamment au moins un évaporateur et un condenseur. Among these heat exchangers, there are in particular at least one evaporator and one condenser.
L’invention a également pour objet, indépendamment ou en combinaison avec ce qui précède, un dispositif de chauffage, ventilation et/ou climatisation pour véhicule, comprenant dans un boitier de ce dispositif : The invention also relates, independently or in combination with the above, to a heating, ventilation and/or air conditioning device for a vehicle, comprising in a housing of this device:
- un canal d’air froid, - a cold air channel,
- un canal d’air chaud, - a hot air channel,
- une chambre de mixage disposé en aval du canal d’air froid et du canal d’air chaud de sorte qu’un flux d’air froid provenant du canal d’air froid et un flux d’air chaud provenant du canal d’air chaud puissent se mélanger dans cette chambre de mixage, la chambre de mixage comportant une paroi inférieure et une paroi supérieure opposée à la paroi inférieure, la paroi inférieure étant pourvue d’une ouverture de mixage entre, d’une part, les canaux d’air froid et chaud et, d’autre part, la chambre de mixage, cette ouverture de mixage comprenant une section de passage pour le canal d’air froid et une section de passage pour le canal d’air chaud, - au moins un volet coulissant agencé pour contrôler un flux d’air qui circule dans cette chambre de mixage, - a mixing chamber arranged downstream of the cold air channel and the hot air channel so that a flow of cold air coming from the cold air channel and a flow of hot air coming from the channel hot air can mix in this mixing chamber, the mixing chamber comprising a lower wall and an upper wall opposite the lower wall, the lower wall being provided with a mixing opening between, on the one hand, the channels of cold and hot air and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air channel, - at least one sliding shutter arranged to control a flow of air which circulates in this mixing chamber,
- un organe d’entraînement du volet coulissant, comprenant notamment une roue dentée, cet organe d’entraînement étant disposé du côté du volet coulissant, opposé à la chambre de mixage. - a drive member for the sliding shutter, comprising in particular a toothed wheel, this drive member being arranged on the side of the sliding shutter, opposite the mixing chamber.
Grâce à l'invention, cet organe d'entraînement du volet coulissant est en dehors de la chambre de mixage, ce qui évite d'entraver les flux d'air à l'intérieur de cette chambre de mixage. L'invention permet ainsi d'améliorer les performances du dispositif de chauffage, ventilation et/ou climatisation. Thanks to the invention, this sliding shutter drive member is outside the mixing chamber, which avoids hindering the air flows inside this mixing chamber. The invention thus makes it possible to improve the performance of the heating, ventilation and/or air conditioning device.
Selon l’un des aspects de l’invention, la chambre de mixage communique avec au moins une première sortie d’air supérieure formée sur la paroi supérieure, et le volet coulissant est un volet coulissant supérieur agencé pour ouvrir ou fermer cette sortie d’air. According to one of the aspects of the invention, the mixing chamber communicates with at least one first upper air outlet formed on the upper wall, and the sliding shutter is an upper sliding shutter arranged to open or close this outlet. air.
Selon l’un des aspects de l’invention, cette première sortie d’air est agencée pour communiquer avec une buse de ventilation latérale ou centrale permettant ainsi de refroidir/réchauffer un passager du véhicule. According to one of the aspects of the invention, this first air outlet is arranged to communicate with a side or central ventilation nozzle thus making it possible to cool/heat a passenger of the vehicle.
Selon l’un des aspects de l’invention, ce volet coulissant supérieur présente deux bords longitudinaux parallèles et le volet est agencé pour pouvoir coulisser entre les positions ouverte et fermée de cette première sortie d’air supérieure. According to one of the aspects of the invention, this upper sliding shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the open and closed positions of this first upper air outlet.
Selon l’un des aspects de l’invention, ce volet coulissant supérieur présente une courbure dont le centre de courbure est vers la paroi supérieure de la chambre de mixage. En variante, ce volet peut être plan. According to one of the aspects of the invention, this upper sliding shutter has a curvature whose center of curvature is towards the upper wall of the mixing chamber. Alternatively, this shutter can be flat.
Selon l’un des aspects de l’invention, l’organe d’entraînement comprend une roue dentée actionnable notamment par un actionneur à moteur électrique. According to one of the aspects of the invention, the drive member comprises a toothed wheel actuable in particular by an electric motor actuator.
Selon l’un des aspects de l’invention, le volet coulissant supérieur comprend une crémaillère le long d’un bord longitudinal, notamment deux crémaillères chacune le long d’un bord longitudinal, et chaque roue dentée de l’organe d’entraînement coopère avec la crémaillère du volet pour déplacer ce volet coulissant supérieur.According to one of the aspects of the invention, the upper sliding shutter comprises a rack along a longitudinal edge, in particular two racks each along a longitudinal edge, and each toothed wheel of the drive member cooperates with the shutter rack to move this upper sliding shutter.
Selon l’un des aspects de l’invention, chaque crémaillère comprend une bande de cannelures. Selon l’un des aspects de l’invention, l’organe d’entraînement comprend deux roues dentées reliées par une tige de liaison qui forme un axe de rotation commun des roues, et chaque roue dentée coopère avec une crémaillère du volet coulissant supérieur. According to one of the aspects of the invention, each rack comprises a strip of grooves. According to one aspect of the invention, the drive member comprises two toothed wheels connected by a connecting rod which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack of the upper sliding shutter.
Selon l’un des aspects de l’invention, le boîtier comprend des rainures de coulissement agencées pour recevoir les bords longitudinaux du volet coulissant supérieur et guider le volet lors de déplacements de coulissement. According to one of the aspects of the invention, the housing comprises sliding grooves arranged to receive the longitudinal edges of the upper sliding shutter and guide the shutter during sliding movements.
Selon l’un des aspects de l’invention, ces rainures présentent globalement une forme en arc de cercle. According to one of the aspects of the invention, these grooves generally have an arcuate shape.
Selon l’un des aspects de l’invention, ces rainures servent de rail pour le volet.According to one of the aspects of the invention, these grooves serve as a rail for the shutter.
Selon l’un des aspects de l’invention, le déplacement du volet coulissant supérieur se fait suivant sensiblement une trajectoire en arc de cercle avec un centre tourné à l’opposé de la chambre de mixage, autrement dit vers l’extérieur du boîtier. According to one of the aspects of the invention, the movement of the upper sliding shutter takes place substantially along an arcuate trajectory with a center facing away from the mixing chamber, in other words towards the outside of the housing.
Selon l’un des aspects de l’invention, l’organe d’entraînement, notamment la ou les roues dentées, est logé dans un logement cylindrique formé par la paroi supérieure. According to one of the aspects of the invention, the drive member, in particular the toothed wheel(s), is housed in a cylindrical housing formed by the upper wall.
Selon l’un des aspects de l’invention, l’organe d’entraînement de ce volet coulissant supérieur est disposé le long d’une poutre structurelle du véhicule, notamment une poutre structurelle de la planche de bord. According to one of the aspects of the invention, the drive member of this upper sliding shutter is arranged along a structural beam of the vehicle, in particular a structural beam of the dashboard.
L’invention a également pour objet, indépendamment ou en combinaison avec ce qui précède, un dispositif de chauffage, ventilation et/ou climatisation pour véhicule, comprenant dans un boitier de ce dispositif : The invention also relates, independently or in combination with the above, to a heating, ventilation and/or air conditioning device for a vehicle, comprising in a housing of this device:
- un canal d’air froid, - a cold air channel,
- un canal d’air chaud, - a hot air channel,
- une chambre de mixage disposé en aval du canal d’air froid et du canal d’air chaud de sorte qu’un flux d’air froid provenant du canal d’air froid et un flux d’air chaud provenant du canal d’air chaud puissent se mélanger dans cette chambre de mixage, la chambre de mixage comportant une paroi inférieure et une paroi supérieure opposée à la paroi inférieure, la paroi inférieure étant pourvue d’une ouverture de mixage entre, d’une part, les canaux d’air froid et chaud et, d’autre part, la chambre de mixage, cette ouverture de mixage comprenant une section de passage pour le canal d’air froid et une section de passage pour le canal d’air chaud, - a mixing chamber arranged downstream of the cold air channel and the hot air channel so that a flow of cold air coming from the cold air channel and a flow of hot air coming from the channel hot air can mix in this mixing chamber, the mixing chamber comprising a lower wall and an upper wall opposite the lower wall, the lower wall being provided with a mixing opening between, on the one hand, the channels of cold air and hot and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air channel,
- au moins un volet coulissant agencé pour contrôler un flux d’air qui circule dans cette chambre de mixage, ce volet comprenant une face principale qui présente une courbure dont le centre de courbure est dirigé vers la paroi supérieure de la chambre de mixage. - at least one sliding shutter arranged to control a flow of air which circulates in this mixing chamber, this shutter comprising a main face which has a curvature whose center of curvature is directed towards the upper wall of the mixing chamber.
Selon l’un des aspects de l’invention, la chambre de mixage communique avec au moins une première sortie d’air supérieure formée sur la paroi supérieure, et le volet coulissant est un volet coulissant supérieur agencé pour ouvrir ou fermer cette sortie d’air. According to one of the aspects of the invention, the mixing chamber communicates with at least one first upper air outlet formed on the upper wall, and the sliding shutter is an upper sliding shutter arranged to open or close this outlet. air.
Selon l’un des aspects de l’invention, cette première sortie d’air est agencée pour communiquer avec une buse de ventilation latérale ou centrale permettant ainsi de refroidir/réchauffer un passager du véhicule. According to one of the aspects of the invention, this first air outlet is arranged to communicate with a side or central ventilation nozzle thus making it possible to cool/heat a passenger of the vehicle.
Selon l’un des aspects de l’invention, ce volet coulissant supérieur présente deux bords longitudinaux parallèles et le volet est agencé pour pouvoir coulisser entre les positions ouverte et fermée de cette première sortie d’air supérieure. According to one of the aspects of the invention, this upper sliding shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the open and closed positions of this first upper air outlet.
Selon l’un des aspects de l’invention, le dispositif comporte un organe d’entraînement du volet coulissant, comprenant notamment une roue dentée, cet organe d’entraînement étant disposé du côté du volet coulissant, opposé à la chambre de mixage. According to one of the aspects of the invention, the device comprises a drive member for the sliding shutter, comprising in particular a toothed wheel, this drive member being arranged on the side of the sliding shutter, opposite the mixing chamber.
Selon l’un des aspects de l’invention, le volet coulissant supérieur comprend une crémaillère le long d’un bord longitudinal, notamment deux crémaillères chacune le long d’un bord longitudinal, et chaque roue dentée de l’organe d’entraînement coopère avec la crémaillère du volet pour déplacer ce volet coulissant supérieur.According to one of the aspects of the invention, the upper sliding shutter comprises a rack along a longitudinal edge, in particular two racks each along a longitudinal edge, and each toothed wheel of the drive member cooperates with the shutter rack to move this upper sliding shutter.
Selon l’un des aspects de l’invention, le dispositif comprend en outre un volet de mixage mobile agencé pour contrôler le flux d’air froid et le flux d’air chaud entrant vers la chambre de mixage, ce volet de mixage étant mobile entre une première position extrémale bloquant la section de passage d’air froid de l’ouverture de mixage empêchant le flux d’air froid du canal d’air froid de circuler vers la chambre de mixage, et une deuxième position extrémale bloquant la section de passage d’air chaud de l’ouverture de mixage empêchant le flux d’air chaud du canal d’air chaud de circuler vers la chambre de mixage. According to one of the aspects of the invention, the device further comprises a mobile mixing flap arranged to control the flow of cold air and the flow of hot air entering the mixing chamber, this mixing flap being mobile between a first end position blocking the cold air passage section of the mixing opening preventing the flow of cold air from the cold air channel from circulating towards the mixing chamber, and a second end position blocking the hot air passage section of the mixing opening preventing the hot air flow from the hot air channel to flow to the mixing chamber.
Selon l’un des aspects de l’invention, le volet de mixage mobile comprend une face principale qui présente une courbure dont le centre de courbure est dirigé vers la paroi supérieure de la chambre de mixage. According to one of the aspects of the invention, the movable mixing flap comprises a main face which has a curvature whose center of curvature is directed towards the upper wall of the mixing chamber.
Selon l’un des aspects de l’invention, les trajectoires du volet de mixage et du volet coulissant supérieur sont sensiblement parallèles. According to one of the aspects of the invention, the trajectories of the mixing flap and the upper sliding shutter are substantially parallel.
Selon l’un des aspects de l’invention, les trajectoires du volet de mixage et du volet coulissant supérieur sont courbes. According to one of the aspects of the invention, the trajectories of the mixing flap and the upper sliding shutter are curved.
L’invention a également pour objet, indépendamment ou en combinaison avec ce qui précède, un dispositif de chauffage, ventilation et/ou climatisation pour véhicule, comprenant dans un boitier de ce dispositif : The invention also relates, independently or in combination with the above, to a heating, ventilation and/or air conditioning device for a vehicle, comprising in a housing of this device:
- un canal d’air froid, - a cold air channel,
- un canal d’air chaud, - a hot air channel,
- une chambre de mixage disposé en aval du canal d’air froid et du canal d’air chaud de sorte qu’un flux d’air froid provenant du canal d’air froid et un flux d’air chaud provenant du canal d’air chaud puissent se mélanger dans cette chambre de mixage, la chambre de mixage comportant une paroi inférieure et une paroi supérieure opposée à la paroi inférieure, la paroi inférieure étant pourvue d’une ouverture de mixage entre, d’une part, les canaux d’air froid et chaud et, d’autre part, la chambre de mixage, cette ouverture de mixage comprenant une section de passage pour le canal d’air froid et une section de passage pour le canal d’air chaud, dans lequel la chambre de mixage communique avec au moins une première sortie d’air supérieure formée sur la paroi supérieure, et un volet coulissant supérieur est agencé pour ouvrir ou fermer cette sortie d’air, cette première sortie d’air étant notamment agencée pour communiquer avec une buse de ventilation latérale ou centrale permettant ainsi de refroidir/réchauffer un passager du véhicule, dans lequel la chambre de mixage communique avec une deuxième sortie d’air supérieure formée sur la paroi supérieure, notamment configurée pour mener le flux d’air vers une buse de dégivrage d’un pare-brise du véhicule, et dans lequel les première et deuxième sorties d’air supérieures sont disposées sur un même côté du volet coulissant supérieur. - a mixing chamber arranged downstream of the cold air channel and the hot air channel so that a flow of cold air coming from the cold air channel and a flow of hot air coming from the channel hot air can mix in this mixing chamber, the mixing chamber comprising a lower wall and an upper wall opposite the lower wall, the lower wall being provided with a mixing opening between, on the one hand, the channels of cold and hot air and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air channel, in which the chamber mixing valve communicates with at least one first upper air outlet formed on the upper wall, and an upper sliding shutter is arranged to open or close this air outlet, this first air outlet being arranged in particular to communicate with a nozzle side or central ventilation thus making it possible to cool/heat a passenger of the vehicle, in which the mixing chamber communicates with a second upper air outlet formed on the upper wall, in particular configured to direct the air flow towards a nozzle of defrosting a vehicle windshield, and in which the first and second upper air outlets are arranged on the same side of the upper sliding shutter.
Selon l’un des aspects de l’invention, les première et deuxième sorties d’air supérieures sont disposées l’une par rapport à l’autre de sorte que le volet coulissant supérieur se rapproche de la deuxième sortie d’air lorsque ce volet se déplace vers la position fermée de la première sortie d’air. According to one of the aspects of the invention, the first and second upper air outlets are arranged relative to each other so that the upper sliding shutter approaches the second air outlet when this shutter moves to the closed position of the first air outlet.
Selon l’un des aspects de l’invention, les première et deuxième sorties d’air supérieures présentent, au moins pour certaines d’entre elles, une section rectangulaire. According to one of the aspects of the invention, the first and second upper air outlets have, at least for some of them, a rectangular section.
Selon l’un des aspects de l’invention, la chambre de mixage communique ainsi avec, d’une part, le canal de distribution qui notamment dirige l’air vers une buse d’air pour pieds, et, d’autre part, avec les première et deuxième sorties d’air supérieures. According to one of the aspects of the invention, the mixing chamber thus communicates with, on the one hand, the distribution channel which in particular directs the air towards an air nozzle for feet, and, on the other hand, with the first and second upper air outlets.
Selon l’un des aspects de l’invention, le canal de distribution qui notamment dirige l’air vers une buse d’air pour pieds, d’une part, et les première et deuxième sorties d’air supérieures, d’autre part, sont disposés de part et d’autre du volet coulissant supérieur. According to one of the aspects of the invention, the distribution channel which in particular directs the air towards an air nozzle for feet, on the one hand, and the first and second upper air outlets, on the other hand , are arranged on either side of the upper sliding shutter.
Selon l’un des aspects de l’invention, le volet coulissant supérieur présente deux bords longitudinaux parallèles et le volet est agencé pour pouvoir coulisser entre les positions ouverte et fermée de cette première sortie d’air supérieure. According to one of the aspects of the invention, the upper sliding shutter has two parallel longitudinal edges and the shutter is arranged to be able to slide between the open and closed positions of this first upper air outlet.
Selon l’un des aspects de l’invention, ce volet coulissant supérieur présente une courbure dont le centre de courbure est dirigé vers la paroi supérieure. According to one of the aspects of the invention, this upper sliding shutter has a curvature whose center of curvature is directed towards the upper wall.
Selon l’un des aspects de l’invention, le dispositif comprend un organe d’entraînement du volet coulissant supérieur, agencé pour le déplacer entre les positions ouverte et fermée, cet organe d’entraînement comprenant une roue dentée actionnable notamment par un actionneur à moteur électrique. According to one of the aspects of the invention, the device comprises a drive member for the upper sliding shutter, arranged to move it between the open and closed positions, this drive member comprising a toothed wheel actuable in particular by an actuator with electric motor.
Selon l’un des aspects de l’invention, le volet coulissant supérieur comprend une crémaillère le long du bord longitudinal, notamment deux crémaillères chacune le long d’un bord longitudinal, et la roue dentée de l’organe d’entraînement coopère avec la crémaillère du volet pour déplacer ce volet coulissant supérieur. Selon l’un des aspects de l’invention, la deuxième sortie d’air supérieure comprend un volet, notamment un volet pivotant, agencé pour réguler le flux d’air qui traverse cette deuxième sortie d’air. According to one of the aspects of the invention, the upper sliding shutter comprises a rack along the longitudinal edge, in particular two racks each along a longitudinal edge, and the toothed wheel of the drive member cooperates with the shutter rack to move this upper sliding shutter. According to one of the aspects of the invention, the second upper air outlet comprises a flap, in particular a pivoting flap, arranged to regulate the air flow which passes through this second air outlet.
D’autres caractéristiques et avantages de l’invention ressortiront à la lecture de la description qui suit, en référence aux figures annexées, qui illustrent : Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the appended figures, which illustrate:
La [Fig. 1] illustre une vue en coupe, d’une partie du dispositif de chauffage, ventilation et/ou climatisation selon un exemple de réalisation de l’invention ;[Fig. 1] illustrates a sectional view of a part of the heating, ventilation and/or air conditioning device according to an exemplary embodiment of the invention;
La [Fig. 2] illustre une vue en perspective d’une partie du dispositif de chauffage, ventilation et/ou climatisation de la figure 1 ; [Fig. 2] illustrates a perspective view of part of the heating, ventilation and/or air conditioning device of Figure 1;
La [Fig. 3] illustre une vue en perspective du volet de mixage et l’organe d’entraînement associé du dispositif de chauffage, ventilation et/ou climatisation de la figure 1 ; [Fig. 3] illustrates a perspective view of the mixing flap and the associated drive member of the heating, ventilation and/or air conditioning device of Figure 1;
La [Fig. 4] illustre une vue en perspective du volet supérieur et l’organe d’entraînement associé du dispositif de chauffage, ventilation et/ou climatisation de la figure 1 . [Fig. 4] illustrates a perspective view of the upper shutter and the associated drive member of the heating, ventilation and/or air conditioning device of Figure 1.
Les termes « amont >> et « aval >> sont en référence par rapport à l’écoulement d’un flux d’air circulant au sein du dispositif de chauffage, ventilation et/ou climatisation. The terms “upstream” and “downstream” refer to the flow of an air flow circulating within the heating, ventilation and/or air conditioning device.
On a représenté sur les figures 1 et 2 un dispositif 1 de chauffage, ventilation et/ou climatisation, comprenant un boîtier 2 qui loge des échangeurs de chaleur.Figures 1 and 2 show a heating, ventilation and/or air conditioning device 1, comprising a housing 2 which houses heat exchangers.
Parmi ces échangeurs de chaleur, figurent un évaporateur 4 destiné à refroidir et déshumidifier un flux d’air F1 qui le traverse, et un chauffage 6 destiné à réchauffer un flux d’air F2 qui le traverse. Among these heat exchangers, there is an evaporator 4 intended to cool and dehumidify an air flow F1 which passes through it, and a heater 6 intended to heat an air flow F2 which passes through it.
Le dispositif 1 de chauffage, ventilation et/ou climatisation comprend un groupe moto-ventilateur, non représenté, qui permet d’acheminer de l’air vers les échangeurs de chaleur 4 et 6. The heating, ventilation and/or air conditioning device 1 comprises a motor-fan group, not shown, which allows air to be routed to the heat exchangers 4 and 6.
Il est possible de se référer par exemple à la demande de brevet FR3100311 pour plus de détails sur le fonctionnement du dispositif 1 . It is possible to refer for example to patent application FR3100311 for more details on the operation of the device 1.
Le dispositif 1 comprend en outre : un canal d’air froid 7 dans lequel peut circuler le flux d’air F1 , - un canal d’air chaud 8 dans lequel peut circuler le flux d’air F2,The device 1 further comprises: a cold air channel 7 in which the air flow F1 can circulate, - a hot air channel 8 in which the air flow F2 can circulate,
- une chambre de mixage 9 disposé en aval du canal d’air froid 7 et du canal d’air chaud 8 de sorte qu’un flux d’air froid F1 provenant du canal d’air froid 7 et un flux d’air chaud F2 provenant du canal d’air chaud 8 puissent se mélanger dans cette chambre de mixage 9. - a mixing chamber 9 arranged downstream of the cold air channel 7 and the hot air channel 8 so that a flow of cold air F1 coming from the cold air channel 7 and a flow of hot air F2 coming from the hot air channel 8 can mix in this mixing chamber 9.
La chambre de mixage 9 comporte une paroi inférieure 10 et une paroi supérieure 11 opposée à la paroi inférieure 10, la paroi inférieure 10 étant pourvue d’une ouverture de mixage 12 entre, d’une part, les canaux d’air froid et chaud 7 et 8 et, d’autre part, la chambre de mixage 9, cette ouverture de mixage 12 comprenant une section de passage 14 pour le canal d’air froid 7 et une section de passage 15 pour le canal d’air chaud 8. The mixing chamber 9 comprises a lower wall 10 and an upper wall 11 opposite the lower wall 10, the lower wall 10 being provided with a mixing opening 12 between, on the one hand, the cold and hot air channels 7 and 8 and, on the other hand, the mixing chamber 9, this mixing opening 12 comprising a passage section 14 for the cold air channel 7 and a passage section 15 for the hot air channel 8.
Le boîtier 2 comprend un canal d’air de distribution 16 agencé pour amener de l’air de la chambre de mixage 9 vers une buse d’air pour pieds, non représentée, débouchant dans un habitacle du véhicule, vers un plancher de ce véhicule.The housing 2 comprises a distribution air channel 16 arranged to bring air from the mixing chamber 9 towards an air nozzle for feet, not shown, opening into a passenger compartment of the vehicle, towards a floor of this vehicle .
Est également prévu un volet de mixage mobile 20 agencé pour contrôler le flux d’air froid F1 et le flux d’air chaud F2 entrant vers la chambre de mixage 9. A mobile mixing shutter 20 is also provided, arranged to control the cold air flow F1 and the hot air flow F2 entering the mixing chamber 9.
Ce volet de mixage 20 est mobile entre une première position extrémale bloquant la section de passage d’air froid 14 de l’ouverture de mixage 12 empêchant le flux d’air froid F1 du canal d’air froid 7 de circuler vers la chambre de mixage 9, et une deuxième position extrémale bloquant la section de passage d’air chaud 15 de l’ouverture de mixage 12 empêchant le flux d’air chaud F2 du canal d’air chaud 8 de circuler vers la chambre de mixage 9. This mixing flap 20 is movable between a first end position blocking the cold air passage section 14 of the mixing opening 12 preventing the cold air flow F1 of the cold air channel 7 from circulating towards the mixing chamber. mixing 9, and a second extreme position blocking the hot air passage section 15 of the mixing opening 12 preventing the flow of hot air F2 from the hot air channel 8 from circulating towards the mixing chamber 9.
Ce volet mobile 20 est agencé pour prendre une position intermédiaire entre ces positions extrémales, position intermédiaire dans laquelle ce volet 20 définit un canal de contournement 21 distinct de la chambre de mixage, et permettant à de l’air froid de circuler du canal d’air froid 7 vers le canal d’air chaud 8 à travers ce canal de contournement 21 , comme illustré par la flèche F3. This movable flap 20 is arranged to take an intermediate position between these extremal positions, an intermediate position in which this flap 20 defines a bypass channel 21 distinct from the mixing chamber, and allowing cold air to circulate from the mixing channel. cold air 7 towards the hot air channel 8 through this bypass channel 21, as illustrated by arrow F3.
Le volet de mixage 20 s’étend sur la paroi inférieure 10 de la chambre de mixage 9. The mixing flap 20 extends over the lower wall 10 of the mixing chamber 9.
Le dispositif 1 comprend en outre un guide d’air 22 agencé pour guider de l’air sortant du canal de contournement 21 vers le canal d’air de distribution 16, ce guide d’air 22 s’étendant dans la chambre de mixage 9 entre la paroi inférieure 10 et la paroi supérieure 11 , et présentant une étendue choisie de sorte à laisser un passage d’air depuis l’ouverture de mixage 12 vers la paroi supérieure 11 de la chambre de mixage 9. The device 1 further comprises an air guide 22 arranged to guide air leaving the bypass channel 21 towards the distribution air channel 16, this air guide 22 extending in the mixing chamber 9 between the lower wall 10 and the upper wall 11, and having an extent chosen so as to leave a passage of air from the mixing opening 12 towards the upper wall 11 of mixing chamber 9.
Le flux d’air F1 qui a été refroidi par l’évaporateur 4 est séparé du chauffage 6 par une cloison 25, de sorte que le flux d’air froid F1 ne soit pas réchauffé par le flux d’air chaud, quand cela n’est pas souhaitable. The air flow F1 which has been cooled by the evaporator 4 is separated from the heater 6 by a partition 25, so that the cold air flow F1 is not heated by the hot air flow, when this does not is not desirable.
Dans la présente invention, on définit la hauteur comme la dimension mesurée suivant un axe de hauteur Z qui passe par les parois inférieure 10 et supérieure 11 de la chambre de mixage 9. Cet axe Z correspond à la verticale lorsque le dispositif 1 est monté sur le véhicule. In the present invention, the height is defined as the dimension measured along a height axis Z which passes through the lower 10 and upper 11 walls of the mixing chamber 9. This Z axis corresponds to the vertical when the device 1 is mounted on the vehicle.
Le guide d’air 22 est ainsi à une hauteur intermédiaire entre les parois inférieure 10 et supérieure 11 de la chambre de mixage 9. The air guide 22 is thus at an intermediate height between the lower 10 and upper 11 walls of the mixing chamber 9.
Ce guide d’air 22 permet de guider le flux d’air F3 en provenance du canal de contournement 21 vers le canal de distribution 16, tout en réduisant la stratification de températures dans ce flux d’air. En effet, le guide d’air 22 permet de réduire la hauteur du flux d’air, et de séparer ce flux d’air du volume de l’autre côté du guide d’air 22. This air guide 22 makes it possible to guide the air flow F3 coming from the bypass channel 21 towards the distribution channel 16, while reducing the temperature stratification in this air flow. In fact, the air guide 22 makes it possible to reduce the height of the air flow, and to separate this air flow from the volume on the other side of the air guide 22.
Le guide d’air 22 présente une hauteur qui varie entre le canal de contournement 21 et le canal de distribution 16. The air guide 22 has a height which varies between the bypass channel 21 and the distribution channel 16.
En particulier, ce guide d’air 22 est plus proche de la paroi inférieure 10 de la chambre de mixage 9 que de la paroi supérieure 11 , à une extrémité en regard du canal de contournement 21 , et ce guide d’air 22 est plus proche de la paroi supérieure 11 de la chambre de mixage 9 que de la paroi inférieure 10, à une extrémité en regard du canal de distribution 16. In particular, this air guide 22 is closer to the lower wall 10 of the mixing chamber 9 than to the upper wall 11, at one end facing the bypass channel 21, and this air guide 22 is more close to the upper wall 11 of the mixing chamber 9 than to the lower wall 10, at one end facing the distribution channel 16.
Dans l’exemple décrit, le guide d’air 22 présente un profil courbe avec un point d’inflexion, comme on peut le voir sur la figure 1 . In the example described, the air guide 22 has a curved profile with an inflection point, as can be seen in Figure 1.
Le guide d’air 22 comporte, à son extrémité en regard du canal de contournement 21 , une portion 27 sensiblement parallèle à la paroi inférieure 10 de la chambre de mixage 9. Le guide d’air 22 comporte, à son extrémité en regard du canal de distribution, une portion 28 sensiblement parallèle à la paroi supérieure 11 de la chambre de mixage 9. The air guide 22 comprises, at its end facing the bypass channel 21, a portion 27 substantially parallel to the lower wall 10 of the mixing chamber 9. The air guide 22 comprises, at its end facing the distribution channel, a portion 28 substantially parallel to the upper wall 11 of the mixing chamber 9.
Le guide d’air 22 présente une forme de bande avec deux bords longitudinaux parallèles 29, et est fait d’une pièce monolithique. The air guide 22 has a strip shape with two parallel longitudinal edges 29, and is made of a monolithic piece.
Le guide d’air 22 compote deux pattes de fixation 30 agencées pour permettre la fixation de ce guide d’air sur une paroi latérale 31 de la chambre de mixage 9.The air guide 22 has two fixing lugs 30 arranged to allow the fixing of this air guide on a side wall 31 of the mixing chamber 9.
Ces pattes de fixation 30 sont perpendiculaires à la bande du guide d’air 22, et sont agencées pour permettre une fixation par vis. En variante, le guide d’air 22 est fait de de moulage avec une portion du boîtier 2. These fixing lugs 30 are perpendicular to the strip of the air guide 22, and are arranged to allow fixing by screw. Alternatively, the air guide 22 is made of molding with a portion of the housing 2.
Le canal de distribution 16 comprend un volet de distribution 32 de type papillon, mobile autour d’un axe de rotation R1 pour contrôler le flux d’air qui entre dans ce canal de distribution 16, et le guide d’air 22 présente une largeur mesurée parallèlement à cet axe de rotation R1 du volet 32, qui est inférieure à la largeur de ce volet de distribution 32. The distribution channel 16 comprises a distribution flap 32 of the butterfly type, movable around an axis of rotation R1 to control the air flow which enters this distribution channel 16, and the air guide 22 has a width measured parallel to this axis of rotation R1 of the flap 32, which is less than the width of this distribution flap 32.
Le guide d’air 22 présente une largeur qui est inférieure à la largeur du volet de mixage 20. The air guide 22 has a width which is less than the width of the mixing flap 20.
Dans l’exemple décrit, le dispositif 1 comprend deux volets de mixage coulissants 20, chacun sur un côté du boîtier 2, et deux guides d’air 22 chacun associé respectivement à l’un de ces volets de mixage 20. In the example described, the device 1 comprises two sliding mixing flaps 20, each on one side of the housing 2, and two air guides 22 each associated respectively with one of these mixing flaps 20.
Comme lieux visible sur la figure 3, ce volet de mixage 20 coulissant présente deux bords longitudinaux parallèles 34 et le volet 20 est agencé pour pouvoir coulisser entre les positions extrémales selon une trajectoire qui longe ces bords longitudinaux 34. As places visible in Figure 3, this sliding mixing flap 20 has two parallel longitudinal edges 34 and the flap 20 is arranged to be able to slide between the extremal positions according to a trajectory which runs along these longitudinal edges 34.
Le volet coulissant 20 comporte, à chaque extrémité longitudinale, deux saillies transversales 35 perpendiculaires aux bords longitudinaux 34, et faisant saillie en direction de l’ouverture de mixage 12. The sliding shutter 20 comprises, at each longitudinal end, two transverse projections 35 perpendicular to the longitudinal edges 34, and projecting in the direction of the mixing opening 12.
Les saillies transversales 35 viennent en appui sur la paroi inférieure 10 lorsque le volet 20 est dans les positions extrémales. The transverse projections 35 come to bear on the lower wall 10 when the flap 20 is in the extremal positions.
Dans la position intermédiaire du volet, les saillies transversales 35 sont en regard respectivement de la section de passage 14 pour le canal d’air froid et la section de passage 15 pour le canal d’air chaud de sorte à former le canal de contournement 21 en permettant à de l’air de circuler d’une section de passage vers l’autre. In the intermediate position of the shutter, the transverse projections 35 face respectively the passage section 14 for the cold air channel and the passage section 15 for the hot air channel so as to form the bypass channel 21 by allowing air to flow from one passage section to the other.
Le boîtier 2 comprend une cloison de séparation 25 entre le canal d’air froid 7 et le canal d’air chaud 8, et le volet 20 comprend une face principale 37 entre les deux saillies transversales 35, cette face principale 37 étant agencée pour définir le canal de contournement 21 qui est entre cette face principale 37 et la cloison de séparation 25. The housing 2 comprises a partition wall 25 between the cold air channel 7 and the hot air channel 8, and the shutter 20 comprises a main face 37 between the two transverse projections 35, this main face 37 being arranged to define the bypass channel 21 which is between this main face 37 and the partition wall 25.
Autrement dit, cette face principale 37 se trouve en retrait de la cloison de séparation 25 pour laisser un espace suffisant pour former le canal de contournement 21 . In other words, this main face 37 is set back from the partition wall 25 to leave sufficient space to form the bypass channel 21.
Les bords longitudinaux 34 de cette face principale 37 sont courbes. The longitudinal edges 34 of this main face 37 are curved.
Cette face principale 37 du volet présente une courbure dont le centre de courbure est dirigé vers la paroi supérieure 11 . This main face 37 of the shutter has a curvature whose center of curvature is directed towards the upper wall 11.
Autrement dit, cette face principale 37 du volet présente une concavité dirigée vers la chambre de mixage 9. In other words, this main face 37 of the shutter has a concavity directed towards the mixing chamber 9.
Le dispositif 1 comprend un organe d’entraînement 38 du volet, agencé pour coopérer avec le volet 20 pour le déplacer entre les positions extrémales. The device 1 comprises a shutter drive member 38, arranged to cooperate with the shutter 20 to move it between the extremal positions.
L’organe d’entraînement 38 comprend deux roues dentées 39 reliées par une tige de liaison 40 qui forme un axe de rotation R2 commun des roues, et chaque roue dentée 39 coopère avec une crémaillère 42 du volet 20. The drive member 38 comprises two toothed wheels 39 connected by a connecting rod 40 which forms a common axis of rotation R2 of the wheels, and each toothed wheel 39 cooperates with a rack 42 of the shutter 20.
Le volet 20 comprend deux crémaillères 42 chacune le long d’un bord longitudinal 34, et la roue dentée 39 de l’organe d’entraînement 38 coopère avec la crémaillère 42 du volet pour déplacer ce volet 20. The shutter 20 comprises two racks 42 each along a longitudinal edge 34, and the toothed wheel 39 of the drive member 38 cooperates with the rack 42 of the shutter to move this shutter 20.
Chaque crémaillère 42 comprend une bande de cannelures 43. Each rack 42 includes a strip of grooves 43.
Ainsi, à chaque volet 20 sont associées deux roues dentées 39 qui tournent de manière simultanée. Thus, each flap 20 is associated with two toothed wheels 39 which rotate simultaneously.
Le boîtier 2 comprend des rainures de coulissement 44, ou gorges de coulissement, agencées pour recevoir les bords longitudinaux 34 du volet et guider le volet 20 lors de déplacements de coulissement entre les positions extrémales. The housing 2 comprises sliding grooves 44, or sliding grooves, arranged to receive the longitudinal edges 34 of the shutter and guide the flap 20 during sliding movements between the extremal positions.
Ces rainures 44 présentent globalement une forme en arc de cercle, et servent de rail pour le volet 20. These grooves 44 generally have an arcuate shape, and serve as a rail for the shutter 20.
Le déplacement entre les positions extrémales du volet 20 se fait suivant sensiblement une trajectoire en arc de cercle avec un centre tourné vers la chambre de mixage 9. The movement between the extremal positions of the flap 20 takes place substantially along an arcuate trajectory with a center turned towards the mixing chamber 9.
L’organe d’entraînement 38 incluant les roues dentées 39 est disposé du côté du volet de mixage 20 tourné vers la chambre de mixage 9. The drive member 38 including the toothed wheels 39 is arranged on the side of the mixing flap 20 facing the mixing chamber 9.
Le guide d’air 22 s’étend sensiblement depuis la roue dentée 39 jusqu’au volet de distribution 32 du canal de distribution 16. The air guide 22 extends substantially from the toothed wheel 39 to the distribution flap 32 of the distribution channel 16.
La chambre de mixage 9 communique avec des premières sorties d’air supérieures 47 formées sur la paroi supérieure 11 , et un volet coulissant supérieur 48 est agencé pour ouvrir ou fermer ces sorties d’air 47. The mixing chamber 9 communicates with first upper air outlets 47 formed on the upper wall 11, and an upper sliding shutter 48 is arranged to open or close these air outlets 47.
Ces premières sorties d’air 47 sont agencées pour communiquer avec une buse de ventilation latérale ou centrale permettant ainsi de refroidir/réchauffer un passager du véhicule. These first air outlets 47 are arranged to communicate with a side or central ventilation nozzle, thus making it possible to cool/heat a passenger of the vehicle.
Comme on peut mieux le voir sur la figure 4, le volet coulissant supérieur 48 est du type porte coulissante. As can be better seen in Figure 4, the upper sliding shutter 48 is of the sliding door type.
Ce volet coulissant supérieur 48 présente deux bords longitudinaux 49 parallèles et le volet 48 est agencé pour pouvoir coulisser entre les positions ouverte et fermée de ces premières sorties d’air supérieures 47. This upper sliding shutter 48 has two parallel longitudinal edges 49 and the shutter 48 is arranged to be able to slide between the open and closed positions of these first upper air outlets 47.
Ce volet coulissant supérieur 48 présente une courbure dont le centre de courbure est dirigé vers la paroi supérieure 11 . This upper sliding shutter 48 has a curvature whose center of curvature is directed towards the upper wall 11.
En particulier, ce volet 48 comprenant une face principale 68 qui présente une courbure dont le centre de courbure est dirigé vers la paroi supérieure 11 de la chambre de mixage 9. In particular, this flap 48 comprises a main face 68 which has a curvature whose center of curvature is directed towards the upper wall 11 of the mixing chamber 9.
Autrement dit, ce volet coulissant supérieur 48 présente une concavité dirigée à l’opposé de la chambre de mixage 9. Le dispositif 1 comprend un organe d’entraînement 50 du volet coulissant supérieur 48, agencé pour le déplacer entre les positions ouverte et fermée.In other words, this upper sliding shutter 48 has a concavity directed opposite the mixing chamber 9. The device 1 comprises a drive member 50 of the upper sliding shutter 48, arranged to move it between the open and closed positions.
Cet organe d’entraînement 50 comprend deux roues dentées 51 reliées par une tige de liaison 52 qui forme un axe de rotation commun des roues, et chaque roue dentée coopère avec une crémaillère 53 du volet coulissant supérieur. This drive member 50 comprises two toothed wheels 51 connected by a connecting rod 52 which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack 53 of the upper sliding shutter.
Le volet coulissant supérieur 48 comprend deux crémaillères 53 chacune le long d’un bord longitudinal 49, et la roue dentée 51 de l’organe d’entraînement coopère avec la crémaillère 53 du volet pour déplacer ce volet coulissant supérieur 48. The upper sliding shutter 48 comprises two racks 53 each along a longitudinal edge 49, and the toothed wheel 51 of the drive member cooperates with the rack 53 of the shutter to move this upper sliding shutter 48.
Chaque crémaillère 53 comprend une bande de cannelures 54. Each rack 53 includes a strip of grooves 54.
Ainsi, à chaque volet coulissant supérieur 48 sont associées deux roues dentées 51 qui tournent de manière simultanée. Thus, with each upper sliding shutter 48 are associated two toothed wheels 51 which rotate simultaneously.
Le boîtier 2 comprend des rainures de coulissement 55 agencées pour recevoir les bords longitudinaux 49 du volet coulissant supérieur et guider le volet lors de déplacements de coulissement. The housing 2 includes sliding grooves 55 arranged to receive the longitudinal edges 49 of the upper sliding shutter and guide the shutter during sliding movements.
Ces rainures 55 présentent globalement une forme en arc de cercle, et servent de rail pour le volet 48. These grooves 55 generally have an arcuate shape, and serve as a rail for the shutter 48.
Le déplacement du volet coulissant supérieur 48 se fait suivant sensiblement une trajectoire en arc de cercle avec un centre tourné à l’opposé de la chambre de mixage 9, autrement dit vers l’extérieur du boîtier 2. The movement of the upper sliding shutter 48 takes place substantially along an arcuate trajectory with a center facing away from the mixing chamber 9, in other words towards the outside of the housing 2.
L’organe d’entraînement 50 incluant les roues dentées 51 est disposé du côté du volet coulissant supérieur 48, opposé à la chambre de mixage 9. The drive member 50 including the toothed wheels 51 is arranged on the side of the upper sliding shutter 48, opposite the mixing chamber 9.
Ainsi les roues dentées 51 sont hors de la chambre de mixage 9, ce qui permet de ne pas faire obstacle aux flux d’air dans la chambre de mixage 9, ce qui permet d’améliorer les performances du dispositif 1 . Thus the toothed wheels 51 are outside the mixing chamber 9, which makes it possible not to obstruct the air flows in the mixing chamber 9, which makes it possible to improve the performance of the device 1.
L’organe d’entraînement 50 incluant les roues dentées 51 est logé dans un logement cylindrique 56 formé par la paroi supérieure 11 . The drive member 50 including the toothed wheels 51 is housed in a cylindrical housing 56 formed by the upper wall 11.
L’organe d’entraînement 50 de ce volet coulissant supérieur 48 est disposé le long d’une poutre structurelle du véhicule, notamment une poutre structurelle de la planche de bord, non représentée. La chambre de mixage 9 communique avec une deuxième sortie d’air supérieure 60 formée sur la paroi supérieure 11 et configurée pour mener le flux d’air vers une buse de dégivrage d’un pare-brise du véhicule. The drive member 50 of this upper sliding shutter 48 is arranged along a structural beam of the vehicle, in particular a structural beam of the dashboard, not shown. The mixing chamber 9 communicates with a second upper air outlet 60 formed on the upper wall 11 and configured to direct the air flow towards a defrosting nozzle of a windshield of the vehicle.
Cette deuxième sortie d’air supérieures 60 comprend un volet 61 pivotant agencé pour réguler le flux d’air qui traverse cette deuxième sortie d’air 60. This second upper air outlet 60 comprises a pivoting flap 61 arranged to regulate the air flow which passes through this second air outlet 60.
Les premières et deuxième sorties d’air supérieures 47 et 60 sont disposées sur un même côté du volet coulissant supérieur 48, et sur un même côté de l’organe d’entraînement 50 associé, à la différence d’une disposition dans laquelle les premières et deuxième sorties d’air supérieures 47 et 60 seraient disposées de part et d’autre du volet coulissant 48. The first and second upper air outlets 47 and 60 are arranged on the same side of the upper sliding shutter 48, and on the same side of the associated drive member 50, unlike an arrangement in which the first and second upper air outlets 47 and 60 would be arranged on either side of the sliding shutter 48.
Les premières et deuxième sorties d’air supérieures 47 et 60 sont disposées l’une par rapport à l’autre de sorte que le volet coulissant supérieur 48 se rapproche de la deuxième sortie d’air 60 lorsque ce volet 48 se déplace vers la position fermée de la première sortie d’air. The first and second upper air outlets 47 and 60 are arranged relative to each other so that the upper sliding shutter 48 approaches the second air outlet 60 when this shutter 48 moves towards the position closed from the first air outlet.
Les premières et deuxième sorties d’air supérieures 47 et 60 présentent, au moins pour certaines d’entre elles, une section rectangulaire. The first and second upper air outlets 47 and 60 have, at least for some of them, a rectangular section.
La chambre de mixage 9 communique ainsi avec, d’une part, le canal de distribution 16 qui notamment dirige l’air vers une buse d’air pour pieds, et, d’autre part, avec les premières et deuxième sorties d’air supérieures 47 et 60.The mixing chamber 9 thus communicates with, on the one hand, the distribution channel 16 which in particular directs the air towards an air nozzle for feet, and, on the other hand, with the first and second air outlets upper 47 and 60.
Le canal de distribution 16 qui notamment dirige l’air vers une buse d’air pour pieds, d’une part, et les premières et deuxième sorties d’air supérieures 47 et 60, d’autre part, sont disposés de part et d’autre du volet coulissant supérieur 48.The distribution channel 16 which in particular directs the air towards an air nozzle for feet, on the one hand, and the first and second upper air outlets 47 and 60, on the other hand, are arranged on either side other of the upper sliding shutter 48.
Les trajectoires du volet de mixage 20 et du volet coulissant supérieur 48 sont sensiblement parallèles. The trajectories of the mixing flap 20 and the upper sliding shutter 48 are substantially parallel.

Claims

Revendications Claims
Revendication 1 - Dispositif (1 ) de chauffage, ventilation et/ou climatisation pour véhicule, comprenant dans un boitier de ce dispositif : Claim 1 - Device (1) for heating, ventilation and/or air conditioning for a vehicle, comprising in a housing of this device:
- un canal d’air froid (7), - a cold air channel (7),
- un canal d’air chaud (8), - a hot air channel (8),
- une chambre de mixage (9) disposé en aval du canal d’air froid et du canal d’air chaud de sorte qu’un flux d’air froid provenant du canal d’air froid et un flux d’air chaud provenant du canal d’air chaud puissent se mélanger dans cette chambre de mixage, la chambre de mixage comportant une paroi inférieure et une paroi supérieure (11 ) opposée à la paroi inférieure (10), la paroi inférieure étant pourvue d’une ouverture de mixage (12) entre, d’une part, les canaux d’air froid et chaud et, d’autre part, la chambre de mixage, cette ouverture de mixage comprenant une section de passage pour le canal d’air froid et une section de passage pour le canal d’air chaud, - a mixing chamber (9) arranged downstream of the cold air channel and the hot air channel so that a flow of cold air coming from the cold air channel and a flow of hot air coming from the hot air channel can mix in this mixing chamber, the mixing chamber comprising a lower wall and an upper wall (11) opposite the lower wall (10), the lower wall being provided with a mixing opening ( 12) between, on the one hand, the cold and hot air channels and, on the other hand, the mixing chamber, this mixing opening comprising a passage section for the cold air channel and a passage section for the hot air channel,
- au moins un volet coulissant (48) agencé pour contrôler un flux d’air qui circule dans cette chambre de mixage, - at least one sliding shutter (48) arranged to control a flow of air which circulates in this mixing chamber,
- un organe d’entraînement (50) du volet coulissant, comprenant notamment une roue dentée (51 ), cet organe d’entraînement étant disposé du côté du volet coulissant, opposé à la chambre de mixage (9). - a drive member (50) of the sliding shutter, comprising in particular a toothed wheel (51), this drive member being arranged on the side of the sliding shutter, opposite the mixing chamber (9).
Revendication 2 - Dispositif selon la revendication précédente, dans lequel la chambre de mixage (9) communique avec au moins une première sortie d’air supérieure (47) formée sur la paroi supérieure (11 ), et le volet coulissant (48) est un volet coulissant supérieur agencé pour ouvrir ou fermer cette sortie d’air, cette première sortie d’air (47) étant notamment agencée pour communiquer avec une buse de ventilation latérale ou centrale permettant ainsi de refroidir/réchauffer un passager du véhicule. Revendication 3 - Dispositif selon l’une des revendications précédentes, dans lequel ce volet coulissant supérieur (48) présente une courbure dont le centre de courbure est vers la paroi supérieure (11 ) de la chambre de mixage (9). Claim 2 - Device according to the preceding claim, in which the mixing chamber (9) communicates with at least one first upper air outlet (47) formed on the upper wall (11), and the sliding shutter (48) is a upper sliding shutter arranged to open or close this air outlet, this first air outlet (47) being arranged in particular to communicate with a side or central ventilation nozzle thus making it possible to cool/heat a passenger of the vehicle. Claim 3 - Device according to one of the preceding claims, in which this upper sliding shutter (48) has a curvature whose center of curvature is towards the upper wall (11) of the mixing chamber (9).
Revendication 4 - Dispositif selon l’une des revendications précédentes, dans lequel l’organe d’entraînement (50) comprend une roue dentée (51 ) actionnable notamment par un actionneur à moteur électrique. Claim 4 - Device according to one of the preceding claims, in which the drive member (50) comprises a toothed wheel (51) actuable in particular by an electric motor actuator.
Revendication 5 - Dispositif selon l’une des revendications précédentes, dans lequel le volet coulissant supérieur (48) comprend une crémaillère le long d’un bord longitudinal, notamment deux crémaillères (53) chacune le long d’un bord longitudinal, et chaque roue dentée de l’organe d’entraînement coopère avec la crémaillère du volet pour déplacer ce volet coulissant supérieur. Revendication 6 - Dispositif selon l’une des revendications précédentes, dans lequel l’organe d’entraînement (50) comprend deux roues dentées (51 ) reliées par une tige de liaison (52) qui forme un axe de rotation commun des roues, et chaque roue dentée coopère avec une crémaillère du volet coulissant supérieur. Revendication 7 - Dispositif selon l’une des revendications précédentes, dans lequel le boîtier comprend des rainures de coulissement (55) agencées pour recevoir les bords longitudinaux du volet coulissant supérieur et guider le volet lors de déplacements de coulissement, ces rainures présentant globalement une forme en arc de cercle. Claim 5 - Device according to one of the preceding claims, in which the upper sliding shutter (48) comprises a rack along a longitudinal edge, in particular two racks (53) each along a longitudinal edge, and each wheel toothed part of the drive member cooperates with the rack of the shutter to move this upper sliding shutter. Claim 6 - Device according to one of the preceding claims, in which the drive member (50) comprises two toothed wheels (51) connected by a connecting rod (52) which forms a common axis of rotation of the wheels, and each toothed wheel cooperates with a rack of the upper sliding shutter. Claim 7 - Device according to one of the preceding claims, in which the housing comprises sliding grooves (55) arranged to receive the longitudinal edges of the upper sliding shutter and guide the shutter during sliding movements, these grooves generally having a shape in an arc of a circle.
Revendication 8 - Dispositif selon l’une des revendications précédentes, dans lequel l’organe d’entraînement (50), notamment la ou les roues dentées, est logé dans un logement cylindrique (56) formé par la paroi supérieure. Claim 8 - Device according to one of the preceding claims, in which the drive member (50), in particular the toothed wheel(s), is housed in a cylindrical housing (56) formed by the upper wall.
Revendication 9 - Dispositif selon l’une des revendications précédentes, dans lequel l’organe d’entraînement (50) de ce volet coulissant supérieur est disposé le long d’une poutre structurelle du véhicule, notamment une poutre structurelle de la planche de bord. Claim 9 - Device according to one of the preceding claims, in which the drive member (50) of this upper sliding shutter is arranged along a structural beam of the vehicle, in particular a structural beam of the dashboard.
PCT/EP2023/060328 2022-04-20 2023-04-20 Heating, ventilation and/or air-conditioning device for a motor vehicle WO2023203149A1 (en)

Applications Claiming Priority (2)

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FRFR2203614 2022-04-20
FR2203614A FR3134754A1 (en) 2022-04-20 2022-04-20 Heating, ventilation and/or air conditioning device for a motor vehicle

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0911196A2 (en) * 1997-09-29 1999-04-28 Calsonic Corporation Heating, ventilation, and air conditioning unit for automotive vehicles
US20140087646A1 (en) * 2012-09-21 2014-03-27 Keihin Corporation Vehicular air conditioning apparatus
DE102014002419A1 (en) * 2013-02-26 2014-08-28 Keihin Corporation Vehicle air conditioning
FR3100311A1 (en) 2019-08-28 2021-03-05 Valeo Systemes Thermiques Heating, ventilation and / or air conditioning device for a motor vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0911196A2 (en) * 1997-09-29 1999-04-28 Calsonic Corporation Heating, ventilation, and air conditioning unit for automotive vehicles
US20140087646A1 (en) * 2012-09-21 2014-03-27 Keihin Corporation Vehicular air conditioning apparatus
DE102014002419A1 (en) * 2013-02-26 2014-08-28 Keihin Corporation Vehicle air conditioning
FR3100311A1 (en) 2019-08-28 2021-03-05 Valeo Systemes Thermiques Heating, ventilation and / or air conditioning device for a motor vehicle

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