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
  • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
  • B60H1/00557—Details of ducts or cables
  • B60H1/00564—Details of ducts or cables of air ducts
• • 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
  • B60H1/00671—Damper doors moved by rotation; Grilles
  • B60H1/00678—Damper doors moved by rotation; Grilles the axis of rotation being in the door plane, e.g. butterfly 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
  • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
  • B60H1/00514—Details of air conditioning housings
• • 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
  • B60H1/00671—Damper doors moved by rotation; Grilles
• • 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
  • B60H2001/00721—Air deflecting or air directing means

Definitions

• the present invention relates to the field of heat treatment of air in vehicles, in particular automobiles. More specifically, the invention relates to a device for heat treatment of air in a vehicle passenger compartment comprising means for ventilating, heating and/or cooling the air in the passenger compartment and thus adjusting the temperature of said passenger compartment.
• Vehicle air heat treatment devices comprise a casing whose walls are provided with openings delimiting air inlets and outlets and inside which the air is directed through various heat treatment members. More particularly, the walls of the casing form ducts in some of which are arranged an evaporator to cool the air and a radiator to heat the air.
• Such devices are generally equipped with adjustable shutters to regulate the flow rates of cold air from the evaporator and the flow rates of hot air from the radiator and thus adjust the temperature of the air resulting from the mixing of hot air. and cold air.
• the air at the adjusted temperature is then guided towards the passenger compartment, for example towards a glazed surface or towards an area where the feet of a user of the vehicle may be.
• These devices may also include a mixing flap movable between a first end position configured so that only warm air is directed to the air outlets and a second end position configured so that only cold air goes to the air outlets.
• the mixing flap can adopt intermediate positions between these two end positions, which allow different portions of hot and cold air to be mixed. It is then possible to obtain better control over the temperature of the air intended for the passenger compartment of the vehicle.
• a drawback of these solutions is that they do not make it possible to have the most linear temperature change curve possible as a function of the different positions of the shutter. This results in thermal discomfort for the user or users of the vehicle.
• Another drawback is that there is always a temperature gradient between the different air outlets and therefore between different zones of the passenger compartment, for example between a zone of the windshield of the vehicle and a zone of the feet of a user of the vehicle.
• the present invention aims to overcome at least one of the aforementioned drawbacks and also to lead to other advantages by proposing a new type of thermal air treatment device for a vehicle, in particular an automobile, and more particularly for a habitable of said vehicle.
• the present invention proposes an air heat treatment device for a vehicle, in particular a motor vehicle, comprising a casing comprising a conveying duct, a heating duct and a mixing chamber formed by the walls of the casing and configured to put in aeraulic communication at least one crankcase air inlet and at least one crankcase air outlet.
• the delivery conduit extends from the inlet to the mixing chamber and the heating conduit extends parallel to the delivery conduit to the mixing chamber.
• the thermal air treatment device further includes a mixing device configured to be movable between a first end position that prevents airflow between the delivery duct and the mixing chamber, such that the air is intended to circulate in the heating circuit, and a second end position which prevents air from circulating in the heating duct.
• the mixing device comprises a main component capable of being rotatable along an axis of rotation.
• the mixing device comprises a deflection element projecting from an upper face of said main flap.
• the deflection element comprises at least one front rib extending in a plane comprising the axis of rotation and at least one lateral rib extending one end of the front rib and extending in a plane perpendicular to the axis of rotation .
• a heating device can in particular be arranged in the heating duct and configured to heat the air circulating in the heating duct.
• the upper face is thus named in relation to the orientation that the flap takes in the casing when the latter is installed in the vehicle, the upper face of the flap being turned away from the road on which the vehicle is traveling.
• the upper face is in particular the face of the main flap which participates in delimiting the air flow zone within the routing duct when the main flap is in the second end position and that the essential, if not is the entire flow of air circulates in the routing duct.
• the upper face can thus be defined as the face of the main flap facing away from the heating duct while the other face of the main flap, the lower face opposite the upper face, faces the heating duct. frontal impedes the laminar flow of air at the level of the upper face thus causing a change in the air flow regime.
• the air flow then changes from laminar to turbulent.
• the air will therefore enter the mixing chamber by swirling, which will allow better mixing of the air from the delivery duct and the air from the heating duct.
• the lateral rib is substantially perpendicular, preferably strictly perpendicular, to the front rib seen in projection in a plane comprising the axis of rotation.
• the upper face is configured to face the mixing chamber.
• the upper face faces the mixing chamber regardless of the position of the main flap and therefore regardless of the position of the mixing device.
• the upper face is, on the contrary, arranged opposite the heating duct, regardless of the position of the mixing device.
• the main flap comprises a first free edge developing parallel to the axis of rotation and being closer to the inlet orifice than a second free edge of the main flap opposite the first free edge, the front rib being in the vicinity of the first free edge of the main flap.
• the proximity of the first free edge and that of the second free edge with respect to the inlet orifice should in particular be considered in a plane perpendicular to the axis of rotation.
• the first free edge of the main flap is arranged upstream of the second free edge with respect to the air flow. The first free edge is thus the first to be in contact with the air.
• each side rib as previously mentioned extends from the front rib towards the second free edge.
• the lateral rib extends continuously from the end of the front rib to the vicinity of the second free edge of the main flap.
• the main flap comprises a shaft configured to allow rotation of the main flap around the axis of rotation and arranged between the first free edge and the second free edge of the main flap, the lateral rib passing through the shaft seen in projection in a plane comprising the axis of rotation.
• the side rib extends over at least 80% of the length of the upper face of the main flap. This ratio of the length of the lateral rib to the length of the upper face is considered in a projection plane including the axis of rotation, the lengths being measured along an axis perpendicular to the axis of rotation.
• the front rib extends over at most 25% of the width of the upper face of the main flap.
• the width of the top face is measured from a first end of the first free edge of the main flap to a second end of the first free edge edge free along an axis parallel to the axis of rotation and included in a plane comprising the axis of rotation.
• an extension plane of the front rib has an angle of inclination with respect to an extension plane of the upper face of the main flap.
• the inclination of this front rib contributes to forming a ramp which deflects the air flow, for example to send it to a zone of the casing different from the mixing chamber in which the air is directed and to allow a continuous supply of air. a defrost air outlet without passing through this mixing chamber, and which creates a disturbance in the air flow allowing for the part of the flow passing through the mixing chamber a faster mixing with the air present elsewhere in this mixing chamber.
• the inclination of this front rib is also calculated so that these advantageous characteristics can appear while limiting the pressure drops in the air flow so as not to penalize the performance of the heat treatment device.
• the angle of inclination is between 50° and 80.
• the angle of inclination is measured in the trigonometric direction from the plane of extension of the upper face of the main shutter to the plane of extension of the main rib seen in projection in a plane perpendicular to the axis of rotation of the main flap.
• the inventors were able to determine by calculation that these values offered a good compromise between noise reduction, an acceptable pressure drop, and the degree of turbulence of the air flow.
• the lateral rib is a first lateral rib and the deflection element comprises a second lateral rib projecting from the upper face of the main flap, the second lateral rib extending another end of the front rib and extending in a plane perpendicular to the axis of rotation.
• the first lateral rib and the second lateral are substantially parallel and that the deflection element has a U-shape in a plane comprising the axis of rotation.
• the main flap comprises a plurality of deflection elements extending at a distance from each other along an axis parallel to the axis of rotation.
• the deflection elements are arranged next to each other along an axis parallel to the axis of rotation, each deflection element being spaced from an adjacent deflection element, so as to form a circulation conduit in which the air can circulate between two adjacent deflection elements.
• the side ribs of the deflection elements are parallel to each other and form corridors where the air can rush. This results in the acceleration of the air at the level of the lateral ribs. The air thus reaches the mixing chamber more quickly and the mixing of the different air flows present in this mixing chamber is simplified.
• the front ribs of the plurality of deflection elements are aligned with each other along an axis parallel to the axis of rotation.
• the plurality of deflection elements comprises a central deflection element comprising a second lateral rib protruding from the upper face of the main flap, the second lateral rib extending another end of the front rib and extending in a plane perpendicular to the axis of rotation.
• the central deflection element is arranged centrally within the plurality of deflection elements. In other words, the central deflection element is surrounded by as many deflection elements on either side of its lateral ribs.
• the plurality of deflection elements comprises at least two end deflection elements which each consist of a front rib and a lateral rib, the other deflection elements of the plurality of elements deflection being arranged between the two end deflection elements. It is deduced from this configuration that these end deflection elements have an L shape seen in projection in a plane comprising the axis of rotation.
• each end deflection element is arranged in the vicinity of a side edge of the main flap, the side edges of the main flap connecting the ends of the first and second free edges of the main flap, each free end of the front rib of each end deflection element being closest to one of the side edges.
• the main flap has a plane of symmetry perpendicular to the axis of rotation of the main flap.
• the mixing device comprises an additional flap, a proximal edge of which is articulated at the level of the first free edge of the main flap and a distal edge of which, opposite the proximal edge, engages in a sliding manner in a guide formed in a wall of the housing.
• the invention also relates to a vehicle, in particular a motor vehicle, comprising a passenger compartment delimited in part by a glazed surface and an air heat treatment device according to the invention, in which at least one air outlet orifice of the device thermal air treatment unit is configured to supply a channel adapted to guide air towards the glazed surface and in which at least one air outlet is configured to guide air towards the feet of at least one user of said vehicle.
• Figure 1 is a schematic representation in a transverse and vertical sectional plane of a heat treatment device according to the invention comprising a mixing device in a first end position;
• FIG 2 Figure 2 is a schematic representation of the heat treatment device of Figure 1 where the mixing device is in a second end position;
• Figure 3 is a schematic representation of the heat treatment device of Figure 1 where the mixing device is in an intermediate position between the first end position and the second end position;
• Figure 4 is a schematic representation in perspective of the mixing device of Figures 1 to 3;
• figure 5 is a schematic representation in projection in a longitudinal and transverse plane of a main component of the mixing device of figure 4;
• Figure 6 is a schematic representation in section along a plane perpendicular to the axis of rotation of the main flap.
• FIG. 1 to 3 illustrate a device 1 for heat treatment of air from a passenger compartment of a vehicle according to the present invention according to different configurations.
• the heat treatment device 1 is configured to ventilate, heat and/or cool the air in the passenger compartment of the vehicle.
• the heat treatment device 1 is configured to ventilate, heat and/or cool the air in the passenger compartment of the vehicle.
• it is possible to adjust the temperature of the passenger compartment, for example in response to a request from a user of the vehicle.
• the heat treatment device 1 comprises a casing 3 comprising a conveying duct 5, a heating duct 7, at least one distribution duct 9 and a mixing chamber 11 formed by walls of the casing 3.
• the conveying duct 5, the heating duct 7, the distribution duct 9 and the mixing chamber 11 are arranged to put in aeraulic communication at least an air inlet 13 of the casing 3 and at least one air outlet 15a, 15b of the casing 3.
• the routing duct 5 extends from the inlet 13 to the mixing chamber 11.
• the routing duct 5 is configured to guide at least part of the air entered through the orifice of inlet 13 to mixing chamber 11.
• An evaporator 17 is arranged in conveying duct 5. Evaporator 17 is configured to cool and dry the air passing through said evaporator 17.
• a ventilation member can be arranged near the inlet orifice 13.
• the ventilation member is configured to generate a flow of air oriented from the inlet orifice to air 13 from the casing 3 to the outlet orifice 15a, 15b of the casing 3.
• the ventilation member is for example a centrifugal fan.
• An air filter can be arranged between the ventilation member, not shown, and the evaporator 17.
• the heating duct 7 extends parallel to the conveying duct 5 as far as the mixture 11.
• the heating duct 7 is thus arranged as a branch of the delivery duct 5.
• a heating device 19 is arranged in the heating duct 7 and configured to heat the air circulating in the heating duct 7.
• an additional heating device for example of the PTC type, is arranged in the heating conduit 7 between the heating device 19 and the mixing chamber 11.
• the mixing chamber 11 connects the conveying duct 5, the heating duct 7 and the distribution duct 9.
• the mixing chamber 11 allows the air leaving the conveying duct 5 and the air at the output of the heating duct 7 to mix in order to obtain a desired temperature of the air intended for the passenger compartment.
• the conveying duct 5 and the heating duct 7 and the mixing chamber 11 have a common junction.
• a mixing device 21 is arranged in the housing, and in particular inside the conveying duct, upstream of the mixing chamber with respect to the direction of air circulation. capable of circulating in the conveying duct 5.
• the mixing device 21 is configured to be movable between a first end position A, represented in FIG. 1, which prevents the circulation of air in the conveying duct 5 towards the mixing chamber 11 and a second end position B, shown in Figure 2, which prevents air from flowing towards the heating duct 7.
• the air in the first end position, the air is directed towards the heating duct so that the first end position of the main flap corresponds to a heating function of the heat treatment device.
• the air in the second end position, the air is directed to the mixing chamber passing only through the delivery duct 5, avoiding the heating circuit, so that the second end position of the main flap corresponds to a ventilation and/or air conditioning function of the heat treatment device.
• the mixing device 21 can also take at least one intermediate position I, shown in Figure 3, between the first end position A and the second end position B and in which part of the air flow is directed towards the mixing chamber via the heating duct 7 and another part of the air flow is directed towards the mixing chamber via the routing duct 5.
• the mixing device 21 comprises a main flap 23 formed of a shaft 39 and two fins 41,43 which extend from the shaft 39.
• the shaft 39 is configured to allow the main flap 23 to be rotatable along an axis of rotation R.
• the axis of rotation R which here extends along the longitudinal direction L, is perpendicular to a general direction of air flow along the mixing device 21.
• Each fin 41,43 has a free edge which extends along an axis substantially parallel to the shaft 39 and therefore to the axis of rotation R.
• the edges free of the fins are opposed to each other with respect to the shaft 39.
• One of the free edges of the fins 41,43 forms a first free edge 29 of the main flap 23 and another of the free edges of the fins 41,43 forms a second free edge 31 of the main flap 23. It is understood that the first free edge 29 of the main flap 23 is opposite the second free edge 31 of the main flap
• the ends of the first free edge 29 of the main flap 23 are connected to the ends of the second free edge 31 of the main flap 23 by side edges 33,35 which extend along an axis substantially perpendicular to the axis of rotation R
• the side edges 33,35 of the main flap 21 are formed by the side edges of the fins 41,43 and a portion of the shaft 39.
• the first free edge 29 of the main flap 23 is arranged upstream of the air flow at the level of the mixing device 21 and the second free edge 31 is downstream of said air flow.
• the first free edge 29 is closer to the inlet 13 than the second free edge 31 seen in a plane comprising the axis of rotation R.
• the two fins 41,43 and the shaft 39 each have an upper face which together forms the upper face 25 of the main flap 23 and each have a lower face which together forms a lower face 27 of the main flap 23 which is opposite the face 25 of the main flap 23.
• the main flap 23 is configured such that the upper face 25 always faces the mixing chamber 11 regardless of the position A, B, I of the mixing device 21.
• the mixing device 21 may also comprise an additional flap 45 articulated on the main flap to extend the latter and help to close the heating duct, this additional flap being particularly visible in Figures 1 to 4.
• the additional flap 45 has a proximal edge 45a which is hinged to the first free edge 29 of the main flap 23 and a distal edge 45b, opposite the proximal edge 45a.
• the distal edge 45b comprises a pin 45c which engages in a sliding manner in a guide 46 formed in a wall of the casing 3.
• the mixing device 21 comprises at least one deflection element 51a,
• the mixing device 21 comprises a plurality of deflection elements 51a, 51b, 51c among which a first end deflection element 51a, a second element d end 51c and a central deflection element 51b.
• the deflection elements 51a, 51b, 51c protrude from the upper face 25 of the main flap 23.
• the first end deflection element 51a and the second end deflection element 51c each comprise a front rib 53 extending in a longitudinal plane parallel to the axis of rotation R and a lateral rib 59 extending a first end 55 of the front rib 53 and extending in a plane perpendicular to the axis of rotation R.
• These end deflection elements each comprise a single lateral rib so that the second end 57 of the front rib 53 is free.
• the first end deflection element 51a and the second end deflection element 51c each therefore have an L shape seen in projection in the main elongation plane of the upper face 25 of the main flap.
• the first end deflection element 51a is arranged in the vicinity of a side edge 33 of the main flap 23.
• the front rib 53 of the first end deflection element 51a is substantially perpendicular to the first side edge 33 of the main flap 23.
• the second end 57 of the front rib of the first end deflection element 51a is closer to the side edge 33 of the main flap 23 than is the first end 55 of the front rib 53 extended by the side rib 59.
• the second end deflection element 51c is arranged in the vicinity of a second lateral edge 35 of the main flap 23.
• the front rib 53 of the second end deflection element 51c is substantially perpendicular to the second lateral edge 35 of the main flap 23
• the second end 57 of the front rib of the second end deflection element 51c is closer to the second side edge 35 of the main flap 23 than is the first end 55 of the front rib 53 of the second deflection element.
• end 51c extended by the lateral rib 59.
• the central deflection element 51b differs from the elements previously described in that it comprises a front rib 53 extending in a plane parallel to the axis of rotation R and two ribs side 59.65 each extending one end of the front rib 53 of the central deflection element 51b.
• the two lateral ribs 59,65 of the central deflection element respectively extend in a plane perpendicular to the axis of rotation R.
• the central deflection element 51b is such that the two lateral ribs 59,65 are substantially parallel to each other and substantially perpendicular to the front rib 53.
• the central deflection element 51b has the shape of an LF seen in projection in the main elongation plane of the upper face 25 of the main flap.
• the front rib 53 is formed on the fin 41 carrying at one end the first free edge 29 of the main flap 23 and this front rib 53 is arranged in the vicinity of this first free edge 29
• the front rib 53 of each deflection element 51a, 51b, 51c is closer to the first free edge 29 of the main flap 23 than to the second edge 31 of the main flap 23, and more particularly, this front rib 53 of each deflection element 51a, 51b, 51c is closer to the first free edge 29 than to the shaft 39 separating the two fins 41, 43 from one another.
• each deflection element 51a, 51b, 51c are aligned with each other along an axis parallel to the axis of rotation R. In this way, the flow of air likely to encounter the deflection elements when it circulates along the main flap, in particular in the second end position or else an intermediate position, is in contact substantially simultaneously with each of the front ribs .
• the front rib 53 of each deflection element 51a, 51b, 51c extends over at most 25% of the width DI of the upper face 25 of the main flap 23.
• an extension dimension of the front rib 53 of each deflection element 51a, 51b, 51c is equal to or less than 25% of the width DI of the upper face 25 of the main flap 23, it being understood that these dimensions are understood here in the longitudinal direction parallel to the axis of rotation R .
• each deflection element 51a, 51b, 51c is equal or less than 25% of the width DI of the upper face 25 of the main flap 23.
• Each deflection element could for example have a front rib having an extension dimension different from the extension dimensions of the other front ribs.
• the front ribs 53 of the deflection elements 51a, 51b, 51c respectively develop in an extension plane which has an angle of inclination ⁇ with respect to an extension plane 250 of the upper face 25 of the main flap 23.
• the front ribs can be arranged relative to each other so that they extend in a common extension plane 150 which has said inclination relative to the extension plane 20 of the upper face 25, namely the plane in which this upper face mainly extends.
• each front rib 53 of the deflection elements 51a, 51b, 51c develop in a different extension plane from the other ribs 53.
• the angle of inclination a is between 50° and 80°.
• the angle of inclination a is measured in the trigonometric direction from the plane of extension 250 of the upper face 25 of the main flap 23 to the plane of extension 150 of the front ribs 53 seen in projection from a plane perpendicular to the axis of rotation R of the main flap 23.
• each lateral rib 59,63 of each deflection element 51a, 51b, 51c extends continuously from one of the ends of the front rib 53 to the vicinity of the second free edge 31 of the flap main 23 along an axis perpendicular to the axis of rotation R.
• the lateral ribs 59, 63 of the deflection elements 51a, 51b, 51c are parallel to each other, within the same deflection element but also from one deflection element to another.
• the 65 of the deflection elements 51a, 51b, 51c have a length NI substantially greater than or equal to 80% of a length of the upper face 25 of the main flap 23.
• the length Ni of a lateral rib is a distance measured along an axis perpendicular to the axis of rotation R, between one end of the lateral rib at the level of the corresponding front rib and another free end of the lateral rib.
• the length L of the upper face 25 of the main flap 23 is the distance between the first free edge 29 and the second free edge 31 of the main flap 23 measured along an axis perpendicular to the axis of rotation R.
• At least two lateral ribs each have a different length.
• the central deflection element 51b is interposed between the two end deflection elements 51a, 51c along an axis parallel to the axis of rotation R.
• the deflection elements 51a, 51b, 51c are placed at a distance each other along an axis parallel to the axis of rotation R. In other words the deflection elements are arranged next to each other along an axis parallel to the axis of rotation R and there is a space between two adjacent deflection elements.
• the main flap 23 has a plane of symmetry S perpendicular to the axis of rotation R of the main flap 23.
• the distribution duct 9 extends between the mixing chamber 11 and the outlet orifices 15a, 15b.
• the distribution duct 9 is configured to distribute the air coming from the mixing chamber towards the outlet orifice 15a which feeds an upper channel 83 intended to bring part of the air towards a glazed surface and/or the orifice outlet 15b which feeds a lower channel 81 intended to bring another part of the air towards the feet of at least one user of said vehicle whether they are placed at the front or the rear of the vehicle cabin.
• Distribution flaps 47, 49 are arranged in the distribution duct 9 to facilitate the distribution of the air coming from the mixing chamber 11 between the outlet orifices 15a, 15b.
• the distribution flaps 47, 49 are configured to be rotatable to open or close, partially or completely, the passages between the mixing chamber 11 and the distribution duct 9 on the one hand and/or the outlet orifices 15a, 15b on the other hand.
• the first end position A of the mixing device 21 represented in FIG. 1 corresponds to a request for hot air in the passenger compartment of the vehicle. All the air capable of penetrating the conveying duct 5 is directed towards the heating duct 7 in order to be heated by the heating device 19. The air can come into contact with the lower face 27 of the main flap 23 before to be directed towards the heating duct 7 and does not come into contact with the upper face 25 of the main component. The heated air is guided to the mixing chamber 11.
• the second end position B of the mixing device 21 represented in FIG. 2 corresponds to a demand for unheated air in the passenger compartment of the vehicle.
• the mixing device 21 is in a configuration where it is arranged at the inlet of the heating conduit between the evaporator 17 and the heating device 19 so that all the air entering the conduit conveying 5 is directed towards the mixing chamber.
• the air circulates in particular along the upper face 25 of the main flap 23 which participates in delimiting the circulation zone of the air flow.
• the intermediate position I of the mixing device 21 represented in FIG. 3 corresponds to a demand for air which needs to be partly heated.
• part is guided into the mixing chamber 11 by the upper face 25 of the main flap 23 and another part is guided into the heating duct 7 in particular by the lower face 27 of the main flap 23.
• the part of the air coming into contact with the upper face 25 of the main flap 23 is deflected by the front ribs 53 of the deflection elements 51a, 51b, 51c which can, according to a first feature to be noted, make it possible to direct a portion of the air flow in a direction other than that guiding the air towards the mixing chamber and in particular to direct part of the air flow directly towards the air outlet orifice 15a and the upper channel 83 dedicated to the ventilation of a glazed surface, to ensure a continuous demisting function.
• the deflection of the air flow by contact with the frontal ribs also makes it possible to generate a change in the flow of the air which passes from laminar to turbulent which allows a faster mixing with the part of the air passed by the heating duct 7.
• the presence of the front ribs and the lateral ribs extending perpendicularly from these front ribs makes it possible to create air circulation corridors, of reduced size, in which the flow of air is likely to rush and move at high speed. Consequently, the part of the air circulating along the upper face 25 arrives in the mixing chamber 11 more quickly, which again contributes to facilitating mixing with the air present in the mixing chamber.
• the different air flows entering the mixing chamber mix quickly and the air flow which reaches the distribution duct 9 at the outlet of the mixing chamber has a uniform temperature.
• the temperature change curve is then as linear as possible as a function of the different positions of the shutter.
• the invention is not limited to the examples which have just been described and many adjustments can be made to these examples without departing from the scope of the invention.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=75746925

Family Applications (1)

Country Status (6)

Family Cites Families (4)

• 2022
  • 2022-03-31 US US18/553,038 patent/US20240174046A1/en active Pending
  • 2022-03-31 WO PCT/EP2022/058651 patent/WO2022207838A1/fr active Application Filing
  • 2022-03-31 CN CN202280036859.0A patent/CN117460632A/zh active Pending
  • 2022-03-31 KR KR1020237033213A patent/KR20230152115A/ko unknown
  • 2022-03-31 JP JP2023560522A patent/JP2024512711A/ja active Pending
  • 2022-03-31 EP EP22720588.7A patent/EP4313641A1/de active Pending

Also Published As

Similar Documents

Legal Events