• 专利附录
  • 专利说明
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    • 专利摘要:
    Device (2) for heating, ventilation and / or air conditioning for a passenger compartment of a motor vehicle, comprising a housing (4) defining a channel (3) for the flow of an air flow in which are housed: - a first heat exchanger (6) of the radiator type; a second heat exchanger (8) of the evaporator type arranged upstream of the first heat exchanger (6) with respect to the direction of the flow of the air flow. According to the invention, the device (2) comprises: a first so-called "high" bypass path (35) of the second heat exchanger (8) in which part of the air flow is deflected; a second so-called "low" bypass path (36) of the second heat exchanger (8) in which part of the air flow is deflected, said so-called "high" and "low" bypass paths (35, 36) being arranged on either side of the second heat exchanger (8).
    公开号:FR3058361A1
    申请号:FR1660816
    申请日:2016-11-08
    公开日:2018-05-11
    发明作者:Fabrice Ailloud；Bastien Jovet；Philippe Pierres；Amanda Martinell
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    058 361
    60816 ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:
    (to be used only for reproduction orders) (© National registration number
    COURBEVOIE © IntCI 8 : B 60 H 1/00 (2017.01)
    PATENT INVENTION APPLICATION
    A1
    (© Date of filing: 08.11.16. © Applicant (s): VALEO THERMAL SYSTEMS ©) Priority: Simplified joint stock company - FR. @ Inventor (s): AILLOUD FABRICE, JOVET BASTIEN, PIERRES PHILIPPE and MARTINELL (43) Date of public availability of the AMANDA. request: 11.05.18 Bulletin 18/19. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): VALEO THERMAL SYSTEMS related: Joint stock company. ©) Extension request (s): © Agent (s): VALEO THERMAL SYSTEMS.
    HEATING, VENTILATION AND / OR AIR CONDITIONING DEVICE FOR A COCKPIT OF A MOTOR VEHICLE.
    FR 3 058 361 - A1
    Heating, ventilation and / or air conditioning device (2) for a passenger compartment of a motor vehicle, comprising a housing (4) defining a channel (3) for the flow of an air flow in which are housed:
    - a first heat exchanger (6) of the radiator type;
    - A second heat exchanger (8) of the evaporator type arranged upstream of the first heat exchanger (6) relative to the direction of flow of the air flow.
    According to the invention, the device (2) comprises:
    - A first so-called “high” bypass path (35) of the second heat exchanger (8) in which part of the air flow is diverted;
    - A second so-called "low" bypass path (36) of the second heat exchanger (8) in which a part of the air flow is diverted, said bypass paths called "high" and "low" (35, 36) being arranged on either side of the second heat exchanger (8).
    Heating, ventilation and / or air conditioning device for a passenger compartment of a motor vehicle
    Field of the invention
    The present invention relates to the field of heating, ventilation and / or air conditioning devices for a passenger compartment of a motor vehicle.
    State of the art
    A motor vehicle is commonly equipped with a ventilation, heating and / or air conditioning device for regulating the aerothermal parameters of a flow of air distributed inside the vehicle interior. Such a device is commonly called HVAC (for Heating, Ventilation and Air-Conditioning in English). The device generally comprises a housing delimited by partitions in which are formed openings, including at least one air inlet and at least one air outlet.
    In known manner, a blower is used to circulate the air flow from the air inlet to the air outlet. It can be a flow of fresh air from outside the vehicle or a flow of recycled air from the passenger compartment of the vehicle or a mixture of flows of outside and recycled air .
    The housing also houses heat treatment means, such as heat exchangers, for heating and / or cooling the air flow prior to its distribution inside the passenger compartment. By way of example, the heat treatment means may include an evaporator which is intended to cool and dehumidify the air flow passing through it, as well as a heating device, in particular a radiator, possibly associated with an additional radiator, which is intended to heat the air flow passing through it.
    It is known, in these devices, to have an evaporator arranged downstream of the air inlet in the direction of flow of the air flow, so that the entire flow of air entering inside of the housing is dehumidified by the evaporator. Then, the flow of cold air thus generated is admitted into a main mixing chamber and / or oriented towards a heating element, in particular a radiator and possibly an additional radiator, to obtain a flow of hot air.
    The main mixing chamber is used to mix one or more flows of cold and / or hot air so that the air flow from the mixture, having the desired set temperature, is distributed to specific areas of the passenger compartment. motor vehicle. The main mixing chamber is provided with a first mixing member, such as a flap, in order to define the proportion of the cold air flow and the hot air flow entering the main mixing chamber. This mixing device thus makes it possible to adjust the temperature of the mixed air flow intended to be distributed in the dedicated zone (s) of the passenger compartment, such as for example the front and rear zones. In this case, the heat treatment is homogeneous, the different areas of the vehicle being ventilated at the same temperature. It is a single zone or zone operation.
    It is possible to have a temperature distinction between the left and right parts of the passenger compartment, in particular via an internal partition in the housing. It is then an operation in two-zone or two-zone mode, allowing separate adjustment of the outgoing air flow respectively in the seats to the left and right of the passenger compartment.
    In addition, it may be advantageous to also have a distinction between the front and rear areas of the passenger compartment, especially for high-end vehicles. It is then an operation in three-four zone mode, allowing a distinction before back, as well as a distinction between the right and left parts of the front zone, and / or the right and left parts of the rear zone. .
    To do this, the box also houses a secondary mixing chamber intended to generate a secondary air flow to ventilate one or more other areas of the passenger compartment.
    The secondary mixing chamber is also in aeraulic communication with the heating element and capable of receiving all or part of the air flow having passed through the evaporator of the heating, ventilation and / or air conditioning device. The secondary mixing chamber is equipped with a second mixing member, such as a flap, in order to define the proportion of the flow of cold air and the flow of hot air entering the secondary mixing chamber to adjust the temperature. of the air flow distributed in the other areas of the vehicle.
    In this case the main mixing chamber is generally provided in an upper part of the heating, ventilation and / or air conditioning device while the secondary mixing chamber is generally provided in a lower part of the heating, ventilation and / or air conditioning device.
    With a heating, ventilation and / or air conditioning device operating in a three-four zone mode, it is known that the main mixing chamber supplies the outlet nozzles at the front of the vehicle cabin, including the outlet nozzles towards the feet at the front, while the secondary mixing chamber supplies the outlet nozzles at the rear of the passenger compartment.
    Also, as said previously, the heating, ventilation and / or air conditioning device can be supplied either with air outside the vehicle (also called fresh air), or with recirculation air, that is to say from vehicle interior. Depending on the operating conditions, it may be particularly advantageous to use outside air to introduce it into the passenger compartment at the level of the defrost nozzles located near the windshield, after heating through the heating, ventilation and / or air conditioning, and conversely, use recirculating air to discharge it into the passenger compartment at the foot nozzles. In order to guarantee this separation between the flows of outside and recycled air while being able to select or best adjust the type of air to be delivered, so-called “double flow” installations are also known, also called “double layer” in English.
    Outdoor air is generally low in moisture, when cold, compared to recirculating air, but can be relatively cold, especially in winter conditions. Since the humidity in the fresh air is relatively low, the risk of generating fogging on the windshield is therefore also low.
    The recirculation air, meanwhile, generally has a higher humidity than the outside air, and is at a temperature close to the temperature to be reached, that is to say close to the set target temperature. for example by the driver or the passenger. In this way, even in winter conditions, it is possible to heat this recycling air more quickly to the set temperature before it is discharged into the passenger compartment. The comfort for users is greatly improved and the risk of generating fogging on the windshield is low, this recirculating air being rejected at a distance from the windshield.
    In this case, it is known that the main mixing chamber supplies fresh outside air to the defrost nozzles, while the secondary mixing chamber supplies the outlet nozzles to the feet at the front as well as to the feet at the rear of the passenger compartment.
    The evaporator of the box belongs to an air conditioning loop consisting of a closed circuit in which a refrigerant circulates. This circuit is composed of four main elements: a compressor, a pressure reducer, and two heat exchangers (the condenser and the evaporator mentioned previously).
    The compressor works when the occupants of the vehicle want an air temperature lower than that entering the HVAC or when there is a need to dehumidify the air to avoid misting the windows. The triggering of the compressor is controlled by the regulation of the control panel of the air conditioning module.
    Operating the compressor results in energy consumption. However, the current trend being to reduce the energy consumption of the vehicle as a whole, it is therefore necessary to seek to reduce that of the compressor.
    In addition, the efficiency of the compressor is low when the thermal load is also low, that is to say when the air temperature upstream of the evaporator is below thirty degrees ° C for example. This low efficiency comes from the fact that the compressor operates in reduced displacement in order to provide a low cooling power. Now it would be preferable to operate the compressor with a larger displacement to provide a higher cooling capacity, and then stop the operation of the compressor in order to maintain the same average cooling capacity over a complete cycle.
    Summary of the invention
    The present invention aims to overcome the various drawbacks stated above, by providing a heating, ventilation and / or air conditioning device for a motor vehicle in which the compressor is no longer permanently requested as in the prior art, all ensuring identical heat treatment of the passenger compartment, both towards the front area of the passenger compartment and towards the rear area of the passenger compartment (depending on the direction of travel of the vehicle), regardless of the operating mode of the device ( one-two zones, double flow, three-four zones).
    For this, the invention provides a heating, ventilation and / or air conditioning device for a passenger compartment of a motor vehicle comprising a housing defining a flow channel for an air flow in which are housed:
    a first heat exchanger of the radiator type;
    a second heat exchanger of the evaporator type arranged upstream of the first heat exchanger with respect to the direction of flow of the air flow.
    This device is mainly characterized in that it also includes:
    - a first so-called "high" bypass path of the second heat exchanger in which part of the air flow is diverted;
    - a second bypass path called "bottom" of the second heat exchanger in which part of the air flow is diverted, said bypass paths called "top" and "bottom" being arranged on either side from the second heat exchanger.
    The main idea of this invention consists in deflecting the air flow around the evaporator so as to decorrelate the temperature downstream of the evaporator from that of the aerator outlets when the thermal conditions allow it and as a function of the temperature of setpoint in the passenger compartment, which is the case when the thermal load is low.
    Indeed, the evaporator bypass allows the temperature downstream of the evaporator to be "smoothed" in order to guarantee a constant temperature at the aerators, and this for all areas of the vehicle.
    This bypassing of part of the air flow around the evaporator has the effect of reducing the temperature variation of the air leaving the aerators despite the compressor starts and stops. It then becomes possible to cycle the compressor to operate it for a reduced time, between 5 and 30 seconds for example, to increase its displacement and therefore its efficiency, then to stop it to keep the same average cooling capacity. This strategy reduces compressor consumption when the thermal load is low, while maintaining a constant supply air temperature to keep the occupants of the vehicle comfortable.
    Bypassing the evaporator therefore ultimately reduces the consumption of the compressor, so that it is not constantly used with low efficiency. Energy consumption is reduced.
    The fact of having these two bypass paths makes it possible to deflect the air flow both towards the top of the housing where there are air outlets towards the front of the passenger compartment according to the direction of travel of the vehicle, and towards the bottom of the housing where there are air outlets towards the rear of the passenger compartment according to the direction of travel of the vehicle. This double deflection thus makes it possible to manage the distribution of air to the front and to the rear of the passenger compartment, and therefore to best manage the thermal needs of the passengers, all while reducing the consumption of the compressor.
    This double deflection is as effective in the case of an operation in one-two zones mode, as in the case of an operation in three-four zones mode, or even that it is a single flow operation or double flow.
    According to the different embodiments of the invention, which can be taken together or separately:
    the so-called "top" and "bottom" bypass paths run along two opposite external faces of the second heat exchanger, said external faces being oriented substantially parallel to the direction of flow of the air flow.
    - The first so-called "high" bypass path is arranged above the second heat exchanger when the device is installed in the motor vehicle.
    - The second bypass path called "bottom" is arranged below the second heat exchanger when the device is installed in the motor vehicle.
    - the device also includes:
    o a first bypass path of the first heat exchanger o a second bypass path of the first heat exchanger, said bypass paths being arranged on either side of the first heat exchanger.
    - The device includes a first mixing chamber, in communication with the first so-called "high" bypass path of the second heat exchanger and located downstream of the first so-called "high" bypass path relative to the flow direction of the air flow, and in which a flow of hot air and a flow of cold air are mixed respectively from the first and second heat exchangers and then routed to conduits capable of supplying nozzles ventilating an area before the vehicle interior.
    the device comprises a flap disposed between the first so-called "top" bypass path of the second heat exchanger and the first mixing chamber.
    - The first mixing chamber is located in the upper part of the housing when the device is installed in the motor vehicle.
    Said first so-called "top" bypass path of the second heat exchanger opens into a high zone between the second heat exchanger and said first mixing chamber.
    - Said upper zone is located upstream of the first heat exchanger.
    - The device includes a second mixing chamber, in communication with the second so-called "bottom" bypass path of the second heat exchanger and located downstream of the low bypass path relative to the direction of flow of the air flow. , and in which a flow of hot air and a flow of cold air are mixed respectively from the first and second heat exchangers and then routed to at least one duct capable of supplying nozzles ventilating a rear zone of the passenger compartment of the vehicle .
    - The second mixing chamber is located in the lower part of the housing when the device is installed in the motor vehicle.
    said second so-called "bottom" bypass path of the second heat exchanger opens into a low zone between the second heat exchanger and said second mixing chamber.
    - Said lower zone is located upstream of the first heat exchanger.
    - The device comprises a so-called "high" component capable of at least partially obstructing the first so-called "high" bypass path of the second heat exchanger.
    - The device comprises a so-called "bottom" component capable of at least partially obstructing the second so-called "bottom" bypass path of the second heat exchanger.
    - the so-called "high" and "low" flaps are operated independently.
    - the so-called "high" and "low" flaps are operated in a dependent manner.
    - the so-called "top" and "bottom" flaps are mechanically connected so as to have coordinated movements.
    - The device comprises two flaps arranged upstream of the first heat exchanger and downstream of the second heat exchanger with respect to the direction of flow of the air flow, said flaps being able to direct the air flow either through the first heat exchanger, or via the first and second bypass paths of the first heat exchanger.
    Presentation of the figures
    The invention will be better understood, and other objects, details, characteristics and advantages thereof will appear more clearly during the detailed explanatory description which will follow, of at least one embodiment of the invention given in title of example purely illustrative and not limiting, with reference to the attached schematic drawings.
    In these drawings:
    - Figure 1 is a sectional side view of a heating, ventilation and / or air conditioning device comprising an additional module for operation in one-two zone mode;
    - Figure 2 is a partial sectional view of a portion of the heating, ventilation and / or air conditioning device of Figure 1;
    - Figure 3 is a partial sectional view of a portion of the heating, ventilation and / or air conditioning device for operation in double-flow mode;
    - Figure 4 is a partial sectional view of a portion of the heating, ventilation and / or air conditioning device comprising an additional module for operation in three-four zone mode;
    - Figure 5 illustrates the air flows within the device according to Figure 1 when the top and bottom bypass paths are closed;
    - Figure 6 illustrates the air flows within the device according to Figure 1 when the top and bottom bypass paths are open.
    detailed description
    The invention relates to a heating, ventilation and / or air conditioning device 2 as visible in FIG. 1, comprising a channel 3 for the flow of an air flow, defined by a housing 4.
    There is shown diagrammatically in FIG. 1, a longitudinal axis X of the heating, ventilation and / or air conditioning device 2 which corresponds to the longitudinal front / rear axis of the vehicle which is a horizontal axis, and a Z axis perpendicular to the axis X, corresponding to the vertical top / bottom axis of the vehicle. In the present, by top and bottom, or front and rear, reference is made to the arrangement of the elements in the figures, which corresponds to the arrangement of the elements in the mounted state in the vehicle and in the direction of travel of the vehicle.
    The housing 4 here has two opposite longitudinal end faces 4a, 4b along the axis X and two opposite upper faces 4c and lower 4d along the axis Z, connecting two opposite lateral faces 4th along a transverse axis Y perpendicular to the plane XZ .
    According to the embodiment described, the housing 4 of the heating, ventilation and / or air conditioning device 2 can further comprise an internal partition wall 5 arranged so as to separate the housing 4 into two halves, advantageously equal.
    The internal partition 5 extends along a median plane parallel to the XZ plane. Thus, when the heating, ventilation and / or air conditioning device 2 is installed in the vehicle, the internal partition wall 5 is situated substantially in the vertical position and in the longitudinal axis of the vehicle. This internal partition 5 allows a distinction between an air flow to a left part of the passenger compartment and an air flow to a right part of the passenger compartment. The internal partition 5 also separates the components of the heating, ventilation and / or air conditioning device 2 housed in the housing 4 in two.
    The heating, ventilation and / or air conditioning device 2 further comprises a first additional module 200 for a one-two zone or double flow mode, or a second additional module 300 for a three-four zone mode arranged on the housing 4, here on a longitudinal end face 4b of the housing 4.
    Figures 1, 2, 5 and 6 illustrate a heating, ventilation and / or air conditioning device 2 receiving the first additional module 200 and able to operate for a one-two zone heat treatment.
    FIG. 3 illustrates a heating, ventilation and / or air conditioning device 2 also receiving the first additional module 200 and able to operate for a double flow heat treatment.
    Finally, FIG. 4 illustrates a heating, ventilation and / or air conditioning device 2 receiving the second additional module 300.
    Means of heat treatment and distribution of air flow in the passenger compartment
    Means for heat treatment of the air flow to the passenger compartment
    One or more heat treatment means 6, 7, 8 of the air flow intended to be distributed in the passenger compartment are arranged in the housing 4 of the heating, ventilation and / or air conditioning device 2.
    According to the illustrated embodiment, the heat treatment means comprise a first heat exchanger 6, for example a radiator, intended to heat at least part of the air flow circulating in the device 2 for heating, ventilation and / or air conditioning.
    The first heat exchanger 6 can optionally be coupled to an additional electric radiator 7 intended to heat the air flow more quickly, in particular in the case of starting the vehicle. The electric radiator 7 advantageously extends substantially parallel to the first heat exchanger 6.
    The heat treatment means may also include a second heat exchanger 8, for example an evaporator, arranged upstream of the first heat exchanger 6 according to the direction of flow of the air flow. The second heat exchanger 8 is arranged so as to cool and dehumidify the air flow circulating in the heating, ventilation and / or air conditioning device 2.
    Distribution of the treated air flow in the passenger compartment
    The air flow is introduced into the housing 4 and after having been optionally heat treated by the heat exchangers, the air flow is directed to one or more outlets.
    The outlet or each outlet includes one or more ducts distributing the air flows to nozzles opening into the passenger compartment.
    According to the example illustrated in the figures, the heating, ventilation and / or air conditioning device 2 comprises in particular:
    - a duct 10 for distributing the air flow for the defrosting nozzle making it possible to demister the windshield,
    a duct 12 for distributing the air flow to one or more lateral / central ventilation nozzles making it possible to cool / warm the passengers at the front of the vehicle, and
    - A duct 14 for distributing the air flow to an outlet nozzle at the level of the feet at the front of the passenger compartment enabling the feet of the passengers at the front of the vehicle to be warmed. For the sake of clarity, this duct 14 is hereinafter called the front leg outlet duct 14.
    These conduits 10, 12, 14 supply treated air to the front area of the passenger compartment.
    According to the illustrated embodiment, the heating, ventilation and / or air conditioning device 2 also includes one or more conduits 24 intended to supply treated air to the rear area of the passenger compartment, for example to direct the flow of air to an outlet nozzle at the feet at the rear of the passenger compartment for heating the feet of passengers at the rear of the vehicle and / or to one or more ventilation nozzles at the rear of the vehicle.
    Each of these conduits 10, 12, 14, 24 can be subdivided into sub-conduits, in particular so as to supply the right and left parts of the appropriate area of the passenger compartment.
    In addition, the heating, ventilation and / or air conditioning device 2 according to the invention may comprise flaps 9, 11, 13 respectively arranged in the conduits 10, 12, 14 making it possible to control / block the access of the air flows. to the various nozzles opening into the front area of the passenger compartment.
    One or more flaps 23 can also be provided arranged in the or each duct 24 making it possible to control / block the access of the air flows to the different nozzles opening into the rear area of the passenger compartment.
    Housing architecture 4
    Upper part of the housing 4 of the heating, ventilation and / or air conditioning device 2
    In order to be able to distribute the air flows to the outlet nozzles at the desired temperatures, the heating, ventilation and air conditioning device 2 comprises a first mixing chamber 15 for the air flow. A flow of hot air and a flow of cold air, originating respectively from heat exchangers 6 and 8, can be mixed in the first mixing chamber 15 in variable proportions and then conveyed to the outlet nozzles opening into the passenger compartment.
    The first mixing chamber 15 is according to the embodiment described in an upper part of the housing 4 along the vertical axis Z.
    To ensure that the flow of cold air from the second heat exchanger 8, in this example an evaporator, is not thermally contaminated by the first heat exchanger 6, in this example a radiator, the device 2 for heating, ventilation and / or air conditioning advantageously comprises a first bypass path 16 of the first heat exchanger 6. Thus, the flow of cold air, having passed through the second heat exchanger 8, can circulate either through the first heat exchanger 6 to be heated, or bypass the first heat exchanger 6 via the first bypass path 16 to maintain its temperature.
    The two flows of hot and cold air are directed towards the first mixing chamber 15 to be mixed there and distributed to the outlet nozzles at the set temperatures.
    Referring to Figure 2, the flow of cold air, having passed through the second heat exchanger 8, can circulate through the first heat exchanger 6 as shown by the arrows in solid lines, and / or bypass the first heat exchanger 6 by the first bypass path 16 as shown schematically by the dashed arrows.
    In addition, the housing 4 has at one face of the housing 4, here a longitudinal end face 4b, a first opening 17 opening into the first mixing chamber 15. This first opening 17 is therefore arranged downstream of the first mixing chamber 15 and the first bypass path 16 when provided, according to the direction of flow of the air flow.
    This first opening 17 is intended to be closed or not depending on the chosen operating mode of the heating, ventilation and / or air conditioning device 2.
    The first opening 17 is closed in the embodiments of FIGS. 1, 2 and 3. This first opening 17 can be closed by a partition C of the housing 4, here by a partition C of the longitudinal end face 4b of the housing 4 receiving the first additional module 200. This partition C can be made in one piece with the longitudinal end face 4b.
    On the contrary, this first opening 17 is not closed in the embodiment of FIG. 4 so as to be able to put the first mixing chamber 15 in communication with the outlet pipe 14 for the front feet. Thus, the air flow coming from the first mixing chamber 15 can circulate towards the front feet outlet duct 14 passing through the first opening 17 and an air circulation channel defined by the second additional module 300.
    The heating, ventilation and / or air conditioning device 2 may further comprise a first flap 18 making it possible to regulate the proportion of cold air flow passing through the first heat exchanger 6 and the proportion of cold air flow passing through the first bypass 16.
    This first flap 18 is arranged upstream of the first heat exchanger 6, and downstream of the second heat exchanger 8, according to the direction of flow of the air flow. It is possible, according to an embodiment not shown, to arrange the first flap 18 downstream of the first heat exchanger 6 according to the direction of flow of the air flow.
    The first flap 18 is mounted movable between two extreme positions:
    a position in which it blocks access to the air flow, which in this example is a flow of cold air leaving the evaporator 8, at the first bypass path 16 and
    - a position in which it blocks access to the cold air flow leaving the evaporator 8, to the first heat exchanger 6.
    Of course, the first flap 18 can take any intermediate position.
    Thus, according to the positioning of the first flap 18, the flow of cold air coming from the second heat exchanger 8 is oriented, in variable proportions, towards the first heat exchanger 6 and / or directly towards the first mixing chamber 15, then towards the conduits 10, 12, 14.
    The first flap 18 is for example of the sliding type and comprises a door 21 on which is arranged a rack cooperating with a gear 20. The rotation of the gear 20 causes the translational movement of the door 21 between the two extreme positions of the first part 18.
    The access of the cold air flow to the first heat exchanger 6, is for example made by means of a first passage 19 corresponding to a portion of the channel 3 for the flow of an air flow located between an element separation 30, which will be described later, and the first heat exchanger 6.
    Such a housing 4 can be used for a heating, ventilation and / or air conditioning device 2 adapted for a homogeneous heat treatment where the different areas of the vehicle are ventilated at the same temperature, this is called heating, ventilation and / or single-zone or zone air conditioning.
    Such a housing 4 can also be used for a heating, ventilation and / or air conditioning device 2 making it possible to have a temperature distinction between the left and right parts of the passenger compartment. It is then a dual-zone or two-zone operation allowing separate adjustment of the outgoing air flow respectively in the seats to the left and right of the passenger compartment. In this case, it is possible to provide shutters with independent control in each left-right part of the heating, ventilation and / or air conditioning device 2. The housing 4 in this case requires the internal partition wall 5 described above.
    Lower part of the housing 4 of the heating, ventilation and / or air conditioning device 2
    In addition, it may be advantageous to also have a distinction between the front and rear areas of the passenger compartment. It is then an operation in three-four zone mode, allowing a distinction between front and rear, as well as a distinction between the right and left parts of the front zone, and / or between the right and left parts of the zone. back.
    For three-four zone operation, the box 4 also requires the internal partition wall 5.
    According to another example, it may be advantageous to distinguish the circulation of a flow of so-called new outside air and a flow of recycled air from the passenger compartment. Indeed, the outside air flow less charged with moisture than the recirculated air flow can be blown into the passenger compartment at the level of the defrost nozzles located near the windshield, after heating through the heating device 2 , ventilation and / or air conditioning for example, while the recirculating air flow from the passenger compartment, which can in particular be heated more quickly, can be blown through the nozzles at the feet away from the windshield , whether it is the foot region at the front or at the rear of the passenger compartment.
    As the humidity level of the fresh air flow is relatively low, the risk of generating fogging on the windshield is therefore also low. Conversely, since the recirculation air flow can be warmed up more quickly to the set temperature, comfort for users is greatly improved.
    It is a double flow mode called "double layer" in English.
    Thus, in order to allow in particular the operation of the heating, ventilation and / or air conditioning device according to the three-four zone or double flow or dual layer modes, the heating, ventilation and / or air conditioning device 2 comprises a second mixing chamber. 22.
    According to the embodiment described, the second mixing chamber 22 is located in a lower part of the housing 4 along the vertical axis Z, as opposed to the first mixing chamber 15 which is located in an upper part of the housing 4 along the vertical axis Z.
    Similarly to the first mixing chamber 15, the second mixing chamber 22 allows the hot and cold air flows, coming respectively from the heat exchangers 6 and 8, to be mixed in variable proportions and then routed to at least one nozzle opening into the appropriate passenger compartment area via at least one conduit 24.
    As with the first mixing chamber 15, to ensure that the flow of cold air from the second heat exchanger 8 is not thermally contaminated by the first heat exchanger 6, the heating, ventilation and / or air conditioning device 2 advantageously comprises a second bypass path 26 of the first heat exchanger 6. The second bypass path 26 is here arranged at a distance from the first bypass path 16. The two bypass paths 16 and 26 are, according to the illustrated example, arranged in part and on the other side of the first heat exchanger 6, along the vertical axis Z.
    Thus, the flow of cold air, having passed through the second heat exchanger 8, flows either through the first heat exchanger 6 to be heated, or bypasses the first heat exchanger 6 by the second bypass path 26 to keep its temperature low. The two hot and cold air flows are directed towards the second mixing chamber 22 to be mixed there and distributed to the outlet nozzles of the zone of the vehicle appropriate to the temperatures recorded.
    In addition, the housing 4 has at its longitudinal end face 4b a second opening 27. It is here the same longitudinal end face 4b of the housing 4 having the first opening 17 opening into the first chamber mixing 15.
    The second opening 27 opens into the second mixing chamber 22. This second opening 27 is therefore arranged downstream of the second mixing chamber 22 and of the second bypass path 26 when it is provided, according to the direction of flow of the flow of air.
    The second opening 27 is in this example arranged on the housing 4 so as to open into the assembly cavity which is in aeraulic communication with the duct 14 for exit from the front feet.
    The second opening 27 is not closed in the embodiments of FIGS. 1 to 3, and allows the second mixing chamber 22 to be placed in communication with the conduit 14 for output from the front feet. On the contrary, this second opening 27 is closed in the embodiment of FIG. 4. This second opening 27 can be closed by a partition provided on the second additional module 300 for a three-four zone mode.
    According to the chosen operating mode of the heating, ventilation and / or air conditioning device 2, it is the first opening 17 or the second opening 27 which is closed while the other remains free so as to allow the duct to be placed in communication. 14 output front feet with one or the other mixing chamber 15 or 22 associated.
    Furthermore, in order to produce a mixture in variable proportions, the heating, ventilation and / or air conditioning device 2 can comprise a second flap 28 making it possible to regulate the proportion of flow of cold air passing through the first heat exchanger 6 and the proportion of cold air flow passing through the second bypass path 26.
    The second flap 28 is advantageously arranged on the same side of the first heat exchanger 6 as the first flap 18. The second flap 28 is arranged upstream of the first heat exchanger 6, and downstream of the second heat exchanger 8, in the direction of flow of the air flow. It is possible, according to an embodiment not shown, to arrange the second flap 28 downstream of the first heat exchanger 6 according to the direction of flow of the air flow.
    The second flap 28 is movable between two extreme positions, a position in which it blocks the access of the cold air flow to the second bypass path 26 and a position in which it blocks the access of the cold air flow to the first heat exchanger 6. Of course, the second flap 28 can take any intermediate position.
    According to a first exemplary embodiment, the second flap 28 can be of a different type than the first flap 18. It can be, for example, a drum flap. Obviously, any other type of flap such as a flag or butterfly flap is suitable.
    According to a variant not illustrated, the second flap 28 can be of the same type as the first flap 18, for example of the planar and sliding type.
    Whatever the embodiment of the second flap 28, depending on its positioning, the flow of cold air coming from the second heat exchanger 8 is oriented, in variable proportions, towards the first heat exchanger 6 and / or directly towards the second chamber mixer 22 then to conduit 24.
    Similarly to the upper part of the housing 4, the access of the cold air flow to the first heat exchanger 6 is for example achieved by means of a second passage 29 corresponding to another portion of the flow channel 3 an air flow located between the separating element 30, and the first heat exchanger 6.
    As seen above, the heating, ventilation and / or air conditioning device 2 according to the invention comprises two mixing chambers 15, 22, each being capable of receiving a flow of air having passed through the first heat exchanger 6.
    Separation of the upper and lower parts of the housing 4 of the heating, ventilation and / or air conditioning device 2
    - Separation of the air flow to the mixing chambers 15, 22
    To ensure that each mixing chamber 15, 22 receives the appropriate quantity of hot air flow, the heating, ventilation and / or air conditioning device 2 comprises a separation element 30 making it possible to separate the air flow from the second exchanger thermal 8 in two separate air flows, each intended to be oriented towards a specific mixing chamber 15, 22. Each air flow has the possibility of passing through part of the first heat exchanger 6 via the corridors 19 , 29 and / or a bypass path 16, 26 to reach the respective mixing chamber 15, 22, in the appropriate proportions to guarantee the respective set temperatures.
    The separation element 30 consists of one or more walls.
    A separation wall 30 ′ can be provided arranged between the first exchanger 6 and the additional electric radiator 7 forming an extension of the separation element 30.
    - Separation of mixing chambers 15, 22
    As said previously, such a device 2 is suitable for multizone heat treatment, that is to say that different areas of the vehicle can be ventilated at different temperatures.
    A passenger can control a set temperature for the air flow from the first mixing chamber 15, and another passenger can control a different set temperature for the air flow from the second mixing chamber 22.
    Typically, it is advantageous for a heating, ventilation and / or air conditioning device operating in a three-four zone or dual-flow mode, to have the two independent mixing chambers 15, 22. Whereas for a one-two zone mode, it is more advantageous to have the dependent mixing chambers 15, 22.
    In order to guarantee the dependence or the independence of the two mixing chambers 15, 22 a separation flap 32 is arranged between the two mixing chambers 15, 22 thus being able either to bring them together or to isolate one from the other.
    Of course, the separation flap 32 joins the two mixing chambers 15, 22 by adopting an extreme position called “open”, as illustrated in FIGS. 1 and 2 and isolates the two mixing chambers 15, 22 by adopting an extreme position called "closed", as illustrated in FIGS. 3 and 4, and thus defines the upper part of the housing 4 comprising the first mixing chamber 15 and the lower part of the housing 4 comprising the second mixing chamber 22 , on either side of the separation flap 32.
    The separation flap 32 is here aligned with the separation element 30, and optionally the separation wall 30 ’. This alignment makes it possible to compartmentalize the box 4 in two.
    In addition, the first opening 17 at the longitudinal end face 4b of the housing 4 opening into the first mixing chamber 15 and the second opening 27 of the housing 4 opening into the second mixing chamber 22 are arranged on both sides. Another of this separation flap 32 along the vertical axis Z. More specifically, the first opening 17 is located above the separation flap 32 and the second opening 27 is located below the separation flap 32.
    Operation of the heating, ventilation and / or air conditioning device 2
    One-two zone mode
    For single-zone or two-zone operation, the separation flap 32 of the two mixing chambers 5, 15, 22 is arranged in the so-called "open" position joining the two mixing chambers 15, 22, as illustrated on the Figures 1 and 2. The first mixing chamber 15 and the second mixing chamber 22 are in this case dependent on each other, or in other words in air communication with each other.
    The first additional module 200 is arranged on the housing 4 at the assembly cavity of the housing 4 so as to delimit an air flow circulation channel between the second mixing chamber 22 and the outlet pipe 14 via the second opening 27 of the housing 4.
    In addition, the housing 4 has on its end face 4b a partition C closing the first opening 17.
    In this way, the front feet outlet duct 14 is supplied with air by the second mixing chamber 22 via the second opening 27 of the housing 4 but also by the first mixing chamber 15.
    It is thus possible to carry out a homogeneous heat treatment by which the different areas of the vehicle are ventilated at the same temperature, this is the single-zone or zone operating mode.
    As a variant, it is possible to carry out a heat treatment with a temperature distinction between the left and right parts of the passenger compartment thanks to the arrangement of the internal partition wall 5 and by the independent control of the flaps in each left right part of the device. 2 heating, ventilation and / or air conditioning. It is then a dual-zone or two-zone operation allowing separate adjustment of the outgoing air flow respectively in the seats to the left and right of the passenger compartment.
    Double flow mode or double wash in English
    On the contrary, if the heating, ventilation and / or air conditioning device 2 is to operate in a mode known as double flow or “double layer” in English, according to which the air of the passenger compartment at higher temperature is blown through the nozzles foot and the outside air having a lower humidity level is blown through the defrosting nozzles, the separation flap 32 is arranged in the so-called "closed" position isolating the two mixing chambers 15, 22, such that illustrated in FIG. 3. An additional 30 ”partition is placed in the extension of the partition 30 in order to create two separate parts at the outlet of the second heat exchanger 8, so as to dissociate the flow of outside air from the flow d recirculated air passing through the second heat exchanger 8. This 30 ”partition can be replaced by a shutter.
    The first additional module 200 which is therefore the same as for a one-two zone operating mode is arranged on the housing 4 at the level of the assembly cavity of the housing 4 so as to delimit an air flow circulation channel between the second mixing chamber 22 and the front feet outlet duct 14 via the second opening 27 of the housing 4.
    According to this double-flow mode, the box 4 also has on its end face 4b a partition C closing the first opening 17.
    Thus, the front feet outlet duct 14 is supplied with air only by a single mixing chamber, here the second mixing chamber 22.
    Three-four zone mode
    According to another variant, if the heating, ventilation and / or air conditioning device 2 must operate in a three-four zone mode, making it possible to carry out a heat treatment with a temperature distinction between the front and rear zones and / or left and right ,
    the separation flap 32 is arranged in the so-called “closed” position isolating the first mixing chamber 15 and the second mixing chamber 22, and
    - the second additional module 300 is arranged on the housing 4 at the level of the assembly cavity of the housing 4 so as to delimit a channel for circulation of the air flow between the first mixing chamber 15 and the outlet outlet duct 14 front via the first opening 17 of the housing 4.
    In this way, the air flow is able to circulate from the first mixing chamber 15, in the upper part of the housing 4 relative to the separation flap 32 and in the air flow circulation channel formed by the second additional module 300. The air flow is deflected with respect to the air flow circulation channel defined according to the preceding modes, one zone or two flow.
    In addition, the second opening 27 of the housing 4 is advantageously closed by the second additional module 300.
    Thus, the front feet outlet duct 14 is supplied with air by a single mixing chamber, here the first mixing chamber 15.
    Bypassing the second heat exchanger 8
    In all the operating modes described above, it is customary for the entire air flow, whether it be the fresh air flow or the recycled air flow, to pass through the second heat exchanger 8.
    With a view to reducing the energy consumption of the heating, ventilation and / or air conditioning device 2 and relieving the compressor of the air conditioning loop to which the second heat exchanger 8 belongs, the flow of fresh and / or recycled air can bypass the second heat exchanger 8, thanks to:
    - A high bypass path 35 of the second heat exchanger 8;
    a bottom bypass path 36 of the second heat exchanger 8.
    In this case, the second heat exchanger 8 is less stressed, which reduces the load and therefore the consumption of the compressor.
    The top bypass path 35 is arranged above the second heat exchanger 8. It arises at an inlet 33 located upstream of the second heat exchanger 8, in the upper part of the housing 4, and opens into an area high 39 between the second heat exchanger 8 and the first mixing chamber 15.
    The air flow arriving in this upper area 39 can then be directed conventionally:
    - either towards the first bypass path 16 of the first heat exchanger 6, to reach the first mixing chamber 15;
    - Or towards the corridor 19 to pass through the first heat exchanger 6;
    - or towards the corridor 29, if the flap 28 allows it, to pass through the first heat exchanger and reach the second mixing chamber 22.
    A top flap 37 is provided in the top bypass path 35 in order to regulate the proportion of air flow passing through the second heat exchanger 8, and the proportion of the air flow passing over the second heat exchanger 8.
    This high flap 37 is mounted movable between two extreme positions:
    - a closed position in which it blocks access to the diverted air flow in the upper zone 39;
    - an open position in which it lets in the entire flow of air diverted towards the upper zone 39.
    Of course, the top flap 37 can take any intermediate position.
    According to an exemplary embodiment, the top flap 37 may consist of a drum flap. Any other type of shutter may be suitable.
    In demist / defrost mode, it is preferable to close at least partially the top bypass path 35 of the second heat exchanger 8, so that the major part of the air flow intended to arrive in the first mixing chamber 15, and a a fortiori in the windscreen distribution duct 10, is passed through the evaporator 8 so that it is less charged with humidity and that the demisting / defrosting function is not impaired.
    The bottom bypass path 36 is arranged below the second heat exchanger 8. It arises at an inlet 34 located upstream of the second heat exchanger 8, in the lower part of the housing 4, and opens into an area low 40 between the second heat exchanger 8 and the second mixing chamber 22. More specifically, the low zone 40 is between the second heat exchanger 8 and the flap 28.
    The air flow arriving in this low zone 40 can then be directed conventionally:
    - either towards the second bypass path 26 of the first heat exchanger 6, to reach the second mixing chamber 22;
    - Or towards the corridor 19 to pass through the first heat exchanger 6;
    - or towards the corridor 29, if the flap 28 allows it, to pass through the first heat exchanger and reach the second mixing chamber 22.
    A bottom flap 38 is provided in the bottom bypass path 36 in order to regulate the proportion of air flow passing through the second heat exchanger 8, and the proportion of the air flow passing below the second heat exchanger 8.
    This bottom flap 38 is mounted movable between two extreme positions:
    - a closed position in which it blocks access to the diverted air flow to the lower zone 40;
    - an open position in which it lets through the entire flow of air diverted to the lower zone 40.
    Of course, the bottom flap 38 can take any intermediate position.
    According to an exemplary embodiment, the bottom flap 38 may consist of a drum flap. Any other type of shutter may be suitable.
    FIG. 5 illustrates the path of the air flows, by the solid arrows, when the top flaps 37 and bottom 38 are completely closed.
    FIG. 6 illustrates the path of the air flows, by the solid arrows, when the top flaps 37 and bottom 38 are fully open. According to the configuration presented, the majority of the air flow always passes through the second heat exchanger 8. This air flow is symbolized by the dotted arrows. However, it is possible to envisage positioning the top flaps 37 and bottom 38 directly upstream of the second heat exchanger 8.
    These two deviations of the air flow are compatible with all of the operating modes described above, whether it is a one-two zone, three-four zone or double flow mode.
    In one-two zone mode, it may be practical to have the upper flaps 37 and lower 38 dependent, in order to harmonize the proportions of air flow in the two bypass paths high 35 and low 36. For example, these top 37 and bottom flaps 38 can be connected by external kinematics, of the connecting rod type connecting the two control levers of the two flaps 37, 38, so as to make them move in concert.
    In three-four zone or double flow mode, the two top 37 and bottom 38 flaps must be able to move independently, so that each can control the proportion of deflected air flow. In fact, the air flow passing through the top bypass path 35 will be directed only towards the first mixing chamber 15, while the air flow passing through the bottom bypass path 36 will be directed only towards the second mixing chamber 15. mixing 22, the two mixing chambers 15, 22 being isolated from one another.
    In this case, each top 37 and bottom flap 38 has its own actuator.
    The configurations shown in the cited figures are only possible examples, in no way limiting, of the invention which, on the contrary, encompasses variants of shapes and designs within the reach of those skilled in the art.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    Claims
    1. A device (2) for heating, ventilation and / or air conditioning for a passenger compartment of a motor vehicle, comprising a housing (4) defining a channel (3) for the flow of an air flow in which are housed:
    - a first heat exchanger (6) of the radiator type;
    - a second heat exchanger (8) of the evaporator type arranged upstream of the first heat exchanger (6) relative to the direction of flow of the air flow;
    characterized in that it includes:
    - A first so-called "high" bypass path (35) of the second heat exchanger (8) in which part of the air flow is diverted;
    - A second so-called "low" bypass path (36) of the second heat exchanger (8) in which a part of the air flow is diverted, said bypass paths called "high" and "low" (35, 36) being arranged on either side of the second heat exchanger (8).
    [2" id="c-fr-0002]
    2. Device (2) according to the preceding claim, characterized in that said so-called "top" and "bottom" bypass paths (35, 36) run along two opposite external faces of the second heat exchanger (8), said external faces being oriented substantially parallel to the direct flow of the air flow.
    [3" id="c-fr-0003]
    3. Device (2) according to one of the preceding claims, characterized in that it also comprises:
    a first bypass path (16) of the first heat exchanger (6),
    - a second bypass path (26) of the first heat exchanger (6), said bypass path (16, 26) being arranged on either side of the first heat exchanger (6).
    [4" id="c-fr-0004]
    4. Device (2) according to one of the preceding claims, characterized in that it comprises a first mixing chamber (15), in communication with the first so-called "high" bypass path (35) of the second heat exchanger (8) and located downstream of the first so-called “high” bypass path (35) of the second heat exchanger (8) relative to the direction of flow of the air flow, and in which a flow of hot air and a cold air flow respectively from the first and second heat exchangers (6,8) then routed to conduits (10,12,14) capable of supplying nozzles ventilating a front zone of the passenger compartment of the vehicle .
    [5" id="c-fr-0005]
    5. Device (2) according to the preceding claim, characterized in that it comprises a flap (21) disposed between the first so-called "top" bypass path (35) of the second heat exchanger (8) and the first mixing (15).
    [6" id="c-fr-0006]
    6. Device (2) according to one of the preceding claims, characterized in that it comprises a second mixing chamber (22), in communication with the second so-called “bottom” bypass path (36) of the second heat exchanger (8) and located downstream of the second so-called “bottom” bypass path (36) of the second heat exchanger (8) with respect to the direction of flow of the air flow, and in which a flow of hot air and a cold air flow respectively from the first and second heat exchangers (6,8) then routed to at least one conduit (24) capable of supplying nozzles ventilating a rear area of the passenger compartment of the vehicle.
    [7" id="c-fr-0007]
    7. Device (2) according to one of the preceding claims, characterized in that it comprises a so-called "top" flap (37) capable of at least partially obstructing the first so-called "top" bypass path (35) of the second heat exchanger (8).
    [8" id="c-fr-0008]
    8. Device (2) according to one of the preceding claims, characterized in that it comprises a so-called "bottom" flap (38) capable of at least partially obstructing the second so-called "bottom" bypass path (36) of the second heat exchanger (8).
    [9" id="c-fr-0009]
    9. Device (2) according to the preceding claim, characterized in that the so-called "top" and "bottom" flaps (37, 38) are actuated independently.
    [10" id="c-fr-0010]
    10. Device (2) according to the preceding claim, characterized in that the so-called "top" and "bottom" flaps (37, 38) are mechanically connected so as to have coordinated movements.
    [11" id="c-fr-0011]
    11. Device (2) according to one of claims 3 to 10, characterized in that it comprises two flaps (21,28) arranged upstream of the first heat exchanger (6) and downstream of the second heat exchanger ( 8) relative to the direction of flow of the air flow, said flaps (21, 28) being able to direct the air flow either through the first heat exchanger (6), or via the first and second bypass paths (16,26) of the first heat exchanger (6).
    1/5
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    同族专利:
    公开号 | 公开日
    FR3058361B1|2019-11-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6311763B1|1999-04-28|2001-11-06|Denso Corporation|Vehicle air conditioner|
    JP2004314709A|2003-04-14|2004-11-11|Denso Corp|Air conditioner for vehicle|
    DE102012214859A1|2012-08-21|2014-03-20|Behr Gmbh & Co. Kg|Air conditioning apparatus for motor vehicle e.g. motor car, has ventilation duct and/or defroster duct and/or foot area channel to which temperature-controlled air is provided, and separate air duct is provided|
    DE102014209452A1|2013-05-21|2014-11-27|Behr Gmbh & Co. Kg|Air conditioning with bypass device|
    FR3031700A1|2015-01-21|2016-07-22|Valeo Systemes Thermiques|THERMAL CONDITIONING DEVICE FOR A MOTOR VEHICLE HABITACLE|WO2020161439A1|2019-02-07|2020-08-13|Valeo Systemes Thermiques|Heating, ventilation and/or air-conditioning device for a motor vehicle|
    FR3092524A1|2019-02-07|2020-08-14|Valeo Systemes Thermiques|Heating, ventilation and / or air conditioning device for a motor vehicle|
    WO2021244968A1|2020-06-01|2021-12-09|Valeo Systemes Thermiques|Protective member for a manifold of a heat exchanger|
    法律状态:
    2017-11-30| PLFP| Fee payment|Year of fee payment: 2 |
    2018-05-11| PLSC| Publication of the preliminary search report|Effective date: 20180511 |
    2018-11-29| PLFP| Fee payment|Year of fee payment: 3 |
    2019-11-29| PLFP| Fee payment|Year of fee payment: 4 |
    2020-11-30| PLFP| Fee payment|Year of fee payment: 5 |
    2021-11-30| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1660816A|FR3058361B1|2016-11-08|2016-11-08|DEVICE FOR HEATING, VENTILATION AND / OR AIR CONDITIONING FOR A HABITACLE OF A MOTOR VEHICLE|
    FR1660816|2016-11-08|FR1660816A| FR3058361B1|2016-11-08|2016-11-08|DEVICE FOR HEATING, VENTILATION AND / OR AIR CONDITIONING FOR A HABITACLE OF A MOTOR VEHICLE|
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