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
  • B60H1/00007—Combined heating, ventilating, or cooling devices
  • B60H1/00207—Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to 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
  • B60H1/00028—Constructional lay-out of the devices in the vehicle
• • 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
  • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
  • B60H1/00514—Details of air conditioning housings
  • B60H1/00535—Mounting or fastening of the housing to the vehicle
• • 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
  • B60H2001/00078—Assembling, manufacturing or layout details
  • B60H2001/00107—Assembling, manufacturing or layout details characterised by the relative position of the heat exchangers, e.g. arrangements leading to a curved airflow
• • 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
  • B60H1/00207—Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to the passenger compartment
  • B60H2001/00214—Devices in front of the passenger compartment

Definitions

• the invention relates to a heating, ventilation and/or air conditioning device for a motor vehicle as well as a motor vehicle comprising such a device.
• heating, ventilation and/or air conditioning devices for a motor vehicle comprising a casing and, inside the casing, one or more heat exchangers and a unit for generating an air flow intended to cross the or the exchangers before being distributed in the direction of a passenger compartment of the vehicle via various outlet orifices.
• Such devices take up a lot of space and one difficulty is to hide them under the dashboard.
• they are located in a housing located between the driver and the passenger. Indeed, at this location, the dashboard can extend vertically between the legs of the driver and the front passenger.
• the heating, ventilation and/or air conditioning devices take advantage of this available space by correspondingly presenting a significant vertical extension.
• dashboard it may be desirable for the dashboard to leave the space between the driver's and front passenger's legs free. It is then no longer possible to hide the heating, ventilation and/or air conditioning devices in this area and their layout must be reviewed.
• a more horizontal distribution of the components of the heating, ventilation and/or air conditioning devices is provided.
• such a distribution must remain compatible with an appropriate overall size of said devices in the passenger compartment of the vehicle.
• the object of the invention is to overcome at least in part the difficulties mentioned above and to this end proposes a heating, ventilation and/or air conditioning device for a motor vehicle, said device having a footprint, called vertical, in a direction, called vertical, Z-Z', said device comprising a casing and, inside the casing, a first heat exchanger and a unit for generating an air flow, said first exchanger extending in a direction close to said vertical direction Z-Z' and a so-called transverse direction, Y-Y', perpendicular to the vertical direction Z-Z', said airflow generating unit comprising a propeller configured to rotate around an axis of rotation, oriented substantially in said transverse direction Y-Y ', and to generate the air flow tangentially towards said first exchanger, said propeller being arranged so as to remain in a vertical space of said first exchanger manager, said casing being configured to extend on either side of a wall separating a engine compartment of a vehicle passenger compartment, a first part of the housing housing the
• the vertical direction Z-Z' of the device is intended to be parallel to the vertical axis called "Z" of the vehicle, in use, that is to say after installation in the vehicle.
• the vertical size of said housing is maximum in a zone guiding the air flow towards said first exchanger and/or in line with said first exchanger.
• the heat exchange surface of the first heat exchanger and the passage sections of the air flow in the direction of this first heat exchanger are preserved. . This optimizes the thermal efficiency of the device.
• Said box is configured to direct the air flow at the outlet of the propeller directly towards said first exchanger, without changing direction,
• said first exchanger comprises a heat exchange bundle extending mainly along a first direction I-G, having a limited angle, for example less than 15°, with respect to said vertical direction, and along the transverse direction Y-Y' ,
• said first exchanger has transverse sides extending in said transverse direction Y-Y 'and in a direction, called the thickness of the beam, J-J', perpendicular to said first direction I-G and to said transverse direction Y-Y ',
• - Said housing has an air supply chamber of said first exchanger having a divergent shape according to the direction of flow of the air flow along said direction of thickness of the bundle J-J', - Said air flow generation unit, in particular said propeller, is located between two parallel planes extending the transverse sides of the first exchanger,
• said first exchanger has lateral sides extending along said first direction I-G and said direction of thickness of the bundle J-J',
• - Said device comprises, inside the housing 1, a second heat exchanger,
• said second exchanger comprises a heat exchange bundle extending mainly in said transverse direction Y-Y' and in a second direction K-K', intended to present a limited angle, for example less than 10°, with respect to in a direction orthogonal to the first I-G direction,
• Said second exchanger is located between said parallel planes extending the transverse sides of the first exchanger and/or between the parallel planes extending the lateral sides of said first exchanger.
• - Said housing defines a flow channel for the air flow with: o at least a first duct for a first air flow, defining a first air outlet, o at least a second duct for a second air flow, air, defining a second air outlet, o at least one mixing chamber communicating with the respective air outlets of said ducts, and o at least one mixing flap comprising a first sliding door arranged so as to control the distribution of first and second air flows in said mixing chamber, said mixing flap being arranged to move between a first extreme position closing the first duct, and a second extreme position closing the second duct, o the first duct directly connecting the first exchanger of heat to the mixing chamber by bypassing the second heat exchanger, o the second duct connecting the first exchanger to the mixing chamber by guiding the air through the second heat exchanger, - the device comprises one or more air outlet vents arranged downstream of the mixing chamber, each air outlet vent being configured to guide the flow of air towards different regions of a vehicle passenger compartment,
• the device comprises a first distribution flap comprising a second sliding door arranged in such a way as to be able to close off at least partially one of said air outlet openings,
• the device comprises an air inlet module positioned in the extension of said air flow generation unit along the transverse axis Y-Y',
• - Said air intake module comprises a first air intake, configured to receive air from outside the vehicle,
• the air inlet module comprises a second air inlet, configured to receive air from a passenger compartment of the vehicle,
• Said second air inlet extends transversely, in particular orthogonally, from a side wall of the housing
• the first part of the box housing the air flow generation unit also houses the air inlet module
• - Said box comprises a support surface intended to come against said wall separating the engine compartment and the passenger compartment,
• the first exchanger is an evaporator
• the second exchanger is a heating radiator.
• the invention also relates to a vehicle comprising an engine compartment, a passenger compartment and a wall separating said engine compartment from said passenger compartment, said vehicle further comprising a heating, ventilation and/or air conditioning device as described above.
• FIG. 1 illustrates in a longitudinal section plane an embodiment of the heating, ventilation and/or air conditioning device according to the invention
• FIG. 2 illustrates a perspective view of the device of FIG. 1, according to a first viewing angle
• FIG. 3 illustrates a perspective view of the device of FIG. 1, according to another angle of view.
• upstream and downstream always refer to the flow of an air flow circulating within the heating, ventilation and/or air conditioning device.
• a longitudinal axis X of the heating, ventilation and/or air conditioning device can correspond to the front/rear longitudinal axis of the vehicle.
• a transverse axis Y of the heating, ventilation and/or air conditioning device may correspond to the right/left transverse axis of the vehicle, and a vertical axis Z of the heating, ventilation and/or air conditioning device may correspond to the top vertical axis / bottom of the vehicle, each axis being perpendicular to each other especially when the heating, ventilation and / or air conditioning device is installed in the motor vehicle.
• the invention relates to a heating, ventilation and/or air conditioning device for a motor vehicle, said device having a space requirement, called vertical, in a direction, called vertical, Z-Z'. This is in particular a direction parallel to the vertical axis "Z" of the vehicle, after installation of said device in the vehicle.
• Said device comprises a housing 1 and, inside the housing 1, a first heat exchanger 2 and a unit 4 for generating an air flow,
• Said first exchanger 2 extending mainly in a direction close to said vertical direction Z-Z' and a so-called transverse direction, Y-Y', perpendicular to the vertical direction Z-Z', and corresponding to the normal to the plane of Figure 1 and illustrated in Figure 3.
• This is, for example, an evaporator. It thus serves to dehumidify and/or cool the air flow.
• Said airflow generation unit 4 comprises a propeller 8 configured to rotate around an axis of rotation 10. This is in particular a volute or radial propeller. Said airflow generation unit 4 further comprises an electric motor for driving the propeller 8, said motor not being illustrated in the figures. Said motor comprises, for example, a stator and a rotor, oriented along said axis of rotation 10 of propeller 8. The motor is positioned, in particular, inside a volume defined by said propeller 8. It does not modify not the vertical bulk of the airflow generation unit 4. It also does not modify, or only slightly, the size of said air generation unit in said transverse direction Y-Y'.
• the vertical size of said housing 1 is chosen to be maximum in a zone 6 for guiding the air flow towards said first exchanger 2 and/or in line with said first exchanger 2.
• a passage section of the flow of air towards the first exchanger 2 which limits the pressure drops on the air and/or an exchange surface with the largest possible air at the level of the said first exchanger 2. While limiting vertical bulk, such a configuration thus makes it possible to maintain significant energy and/or thermal performance.
• said axis of rotation 10 of propeller 8 is oriented substantially along said transverse direction Y-Y' and said propeller 8 is configured to generate the air flow tangentially, according to the arrow marked F0, in direction of said first exchanger 2.
• Said propeller 8 is also arranged so as to remain in a vertical space of said first exchanger 2.
• said propeller 8 can have a large diameter and generate a significant air flow without impacting the vertical space of the casing 1.
• the orientation of the propeller 8 promotes air supply to the unit 4 for generating the air flow in said transverse direction Y-Y', which also contributes to preserving the vertical bulk of the device while limiting air pressure drops.
• the invention also extends to a device in which the propeller 8, while retaining the same orientation, would have a positioning and/or a diameter which would take it out of the vertical space of the first exchanger 2 as long as, given the wall thicknesses of the housing 1, such a propeller does not cause an increase in the vertical size of the housing compared to that which said housing 1 has in the zone 6 for guiding the air flow towards said first exchanger 2 and /or to the right of said first interchange 2.
• said box is configured to direct the air flow at the outlet of the propeller 8 directly towards said first exchanger 2, without elbow or change of direction. This helps to limit air pressure drops.
• said casing 1 has a first chamber 12 in which said air flow generation unit 4 is located.
• Said casing also has a second chamber 14 defining the zone 6 for guiding the air flow towards said first exchanger 2 and forming a space for supplying air to said first exchanger 2.
• Said first chamber 12 has, for example, a cylindrical configuration , of circular section, centered on the axis of rotation 10 of the propeller 8.
• Said casing 1 also has a communication orifice 16 between said first chamber 12 and said second chamber 14 so that the air passes directly from one to the other.
• Said communication orifice 16 extends along said transverse direction Y-Y' along the same extent as said helix 8 and/or said first exchanger 2 along the same direction.
• the air flow is generated tangentially to a lower part of the propeller 8 and passes from the first chamber 12 to the second chamber 14 through the communication orifice 16, without elbow or change of direction, said communication orifice 16 being positioned in the lower part of said housing 1 .
• Said first exchanger 2 advantageously comprises a heat exchange bundle 18 extending mainly along a first direction IG presenting a limited angle, for example less than 15°, with respect to said vertical direction, and along the transverse direction Y-Y '.
• said first exchanger 2 is slightly inclined with respect to the vertical but it could also be oriented vertically.
• Said first exchanger 2 has transverse sides 20, 22 extending in said transverse direction Y-Y' and in a direction, called the thickness of the bundle, J-J', perpendicular to said first direction I-G and to said transverse direction Y-Y'.
• Said transverse sides 20, 22 respectively here form upper and lower sides of the first exchanger 2.
• Said first exchanger 2 also has lateral sides, not visible in the figures, extending along said first direction I-G and said direction of thickness of the beam J-J'.
• Said lateral sides here respectively form right and left sides of the first exchanger 2. They connect the transverse sides 20, 22.
• said 4 air flow generation unit in particular said propeller 8 are located between two parallel planes P, P' extending the transverse sides 20, 22 of the first exchanger 2.
• said airflow generation unit 4 and/or said propeller 8 are substantially centered along said transverse axis Y-Y' with respect to said first exchanger 2. This allows good distribution of the airflow while limiting the size of the device along this direction. More specifically, here, said airflow generation unit 4 and/or said propeller 8 are substantially centered in said transverse direction Y-Y' between two planes extending said lateral sides of the exchanger.
• said second chamber 14 preferably has a divergent shape according to the direction of flow of the air flow along said direction of thickness of the bundle J-J'.
• Said device further comprises, inside the housing 1, a second heat exchanger 24.
• a second heat exchanger 24 This is, for example, a heating radiator. It serves to heat the air passing through it.
• Said second heat exchanger 24 is located downstream of said first exchanger 2, according to the direction of flow of the air flow.
• Said box 1 here defines downstream of the first exchanger 2, a volume 28, called downstream volume, separated from the second chamber 14 by said first exchanger 2.
• Said second exchanger 24 is located in said downstream volume 28.
• Said second exchanger 24 comprises a heat exchange bundle extending mainly in said transverse direction Y-Y' and in a second direction K- K', intended to exhibit a limited angle, for example less than 10°, with respect to a direction orthogonal to the first direction IG and/or with respect to the horizontal, in use.
• Said second exchanger 24 is preferably located between said parallel planes P, P' extending the transverse sides 20, 22 of the first exchanger 2 and/or between the parallel planes extending the lateral sides of said first exchanger 2.
• Said housing 1 defines in said downstream volume 28 at least a first duct 32 for the flow of a first flow of air F1, defining a first outlet and at least a second duct 34 for the flow of a second air flow.
• air F2 defining a second output.
• It further defines at least one mixing chamber 38, communicating with the respective outputs of said ducts 32, 34.
• Said device further comprises at least one mixing flap 40 comprising a first sliding door arranged so as to control the distribution of the first F1 and second F2 airflows in said mixing chamber 38.
• Said mixing flap 40 is arranged to move between a first extreme position, blocking the first outlet, that is to say the outlet of the first conduit 32, and a second extreme position closing the second outlet, that is to say, the outlet of the second conduit 34.
• the first conduit 32 directly connects the first heat exchanger 2 to the mixing chamber 38 bypassing the second heat exchanger 24.
• the second conduit 34 connects the first exchanger 2 to the mixing chamber 38 passing through the second heat exchanger. heat 24.
• all of the airflow coming from the airflow generation unit 4 systematically passes through the first exchanger 2 and only the part of the airflow possibly borrowing the second duct 34 passes through said second exchanger 24, the other part bypassing said second exchanger 24.
• only the part of the air flow possibly passing through the second conduit 34 is heated.
• the position of the mixing flap 40 is determined according to the air conditioning mode and the temperature chosen.
• the mixing flap 40 When said mixing flap 40 is in its first extreme position, the entire flow of air passes through the second duct 34 to undergo heating.
• the mixing flap 40 When the mixing flap 40 is in its second extreme position, the entire flow of air passes through the first duct 32, without undergoing heating.
• said mixing flap 40 When said mixing flap 40 is in an intermediate position, the air flow is shared at the outlet of the first exchanger 2 between the first duct 32 and the second duct 34.
• the corresponding flows F1, cold, and F2, hot, are found then in the mixing chamber 38 to form an air flow of intermediate temperature, as illustrated in FIG.
• Said box 1 here comprises at least one air outlet mouth 62, 64, 66 arranged downstream of the mixing chamber 38, each air outlet mouth 62, 64, 66 being configured to guide the flow towards different regions of the vehicle interior.
• This is, for example, a first air outlet mouth 62 in the direction of a windshield of the vehicle, located in the upper part of the housing 1, a second air outlet mouth 64 in direction of the upper body of the driver or of the passengers of the vehicle, located in the front part of the housing 1, or of a third air outlet 66, in the direction of the feet of the driver and/or the front passenger.
• said device further comprises a first, a second and/or a third distribution flap 68, 70, 72, respectively arranged so as to be able to close off at least partially the first, the second and/or the third of said outlet mouths.
• a distribution flap is provided here for each of said outlet vents 62, 64, 66. Alternatively, some of said flaps may be common to several outlet vents.
• the said shutter(s) are formed, for example, of a sliding door, a butterfly shutter and/or a flag shutter.
• said first flap 68 is formed, in particular, of a flag flap.
• Said second distribution flap 70 is formed, in particular, of a second sliding door.
• the third flap 72 is formed, in particular, of a butterfly flap.
• Said box 1 further comprises here one or more air flow channels 74, connected to said third mouth 66 and intended to guide the air in the lower part of the passenger compartment.
• the device further comprises an air inlet module 80.
• Said air inlet module makes it possible to supply said unit 4 for generating an air flow. It includes, for example, an air filter.
• Said air inlet module 80 is advantageously positioned in the extension of said unit 4 for generating the air flow along the transverse axis Y-Y', at the inlet of said unit 4.
• Said air inlet module 80 comprises a first air inlet 82, configured to receive air coming from outside the vehicle, according to the arrow marked Fe.
• Said air inlet 82 extends here in the extension of the axis of rotation 10 of the propeller 8. It is located in a plane orthogonal to said axis of rotation 10.
• the air inlet module further comprises a second air inlet 84, configured to receive air from a passenger compartment of the vehicle, according to the arrow marked Fi.
• Said second air inlet 84 extends transversely, in particular orthogonally, from a side wall 86 of the casing.
• Said second air inlet 84 is located in a plane orthogonal to said first air inlet 82.
• said box 1 is configured to extend on either side of a wall 90, illustrated schematically in dotted lines in FIG. Said wall 90 separates an engine compartment from the passenger compartment of the vehicle.
• a first part of the casing 1 accommodating the air flow generation unit 4 as well as, possibly, the air intake module 80 are intended to be located on the engine compartment side. This limits the horizontal size of the device in the passenger compartment.
• a second part of the casing 1 accommodating the first exchanger 2 and the downstream volume 26 is intended to be located on the passenger compartment side.
• the second chamber 14 is located, for example on either side of said wall 90.
• Said housing here comprises a support surface 92, intended to come against said wall 90 separating the engine compartment and the passenger compartment.
• Said support surface 92 is intended to be oriented substantially vertically, in use.
• said device further comprises one or more actuators 94 intended to cause the mixing flap 40 and the distribution flap or flaps 62, 64, 66 to move. 2 and/or the second exchanger 24 with the fluid(s) intended to pass through them.
• actuators 94 intended to cause the mixing flap 40 and the distribution flap or flaps 62, 64, 66 to move. 2 and/or the second exchanger 24 with the fluid(s) intended to pass through them.
• These are respectively, for example, a refrigerant and a heat transfer fluid.
• said actuator(s) 94 are located on a side wall of housing 1, here corresponding to side wall 86 from which said second air inlet 84 extends, and said connector(s) 96 are located on a wall opposite side.
• Said device further comprises a power supply 98 of the unit 4 for generating the air flow.
• Said power supply 98 is configured to pass through said partition 90.
• Said power supply is located, for example, along one of the side walls of the box 1, in particular that carrying the said connector(s) 96.

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• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Air-Conditioning For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=75746924

Family Applications (1)

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• 2022
  • 2022-03-31 WO PCT/EP2022/058648 patent/WO2022207837A1/fr active Application Filing
  • 2022-03-31 CN CN202280036858.6A patent/CN117412875A/zh active Pending
  • 2022-03-31 US US18/553,029 patent/US20240190201A1/en active Pending
  • 2022-03-31 EP EP22720585.3A patent/EP4313640A1/fr active Pending

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