FR2909934A1 - Air conditioning device for motor vehicle - Google Patents

Air conditioning device for motor vehicle Download PDF

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Publication number
FR2909934A1
FR2909934A1 FR0655464A FR0655464A FR2909934A1 FR 2909934 A1 FR2909934 A1 FR 2909934A1 FR 0655464 A FR0655464 A FR 0655464A FR 0655464 A FR0655464 A FR 0655464A FR 2909934 A1 FR2909934 A1 FR 2909934A1
Authority
FR
France
Prior art keywords
flap
condensate
housing
device
characterized
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR0655464A
Other languages
French (fr)
Inventor
Jean Pierre Freytrich
Philippe Lesouef
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Priority to FR0655464A priority Critical patent/FR2909934A1/en
Publication of FR2909934A1 publication Critical patent/FR2909934A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00664Construction or arrangement of damper doors
    • B60H1/00671Damper doors moved by rotation; Grilles
    • B60H1/00685Damper doors moved by rotation; Grilles the door being a rotating disc or cylinder or part thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007Combined heating, ventilating, or cooling devices
    • B60H1/00021Air flow details of HVAC devices
    • B60H1/00035Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment
    • B60H1/0005Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment the air being firstly cooled and subsequently heated or vice versa
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/32Cooling devices
    • B60H1/3233Cooling devices characterised by condensed liquid drainage means

Abstract

The invention relates to a device (10) for air conditioning for a motor vehicle, of the type comprising a housing (12) in which are arranged a first heat exchange element (22), a second heat exchange element ( 24), and a flap (32) which is movably mounted between a cooling position in which the airflow is oriented at least in slope towards the cooling element (22), and a heating position in which the flow of air is oriented at least slope towards the heating element (24), characterized in that the flap (32) comprises a means (34) for collecting a condensate (42) which has been flowing for at least the cooling element (22).

Description

"Air conditioning device for a motor vehicle" The invention

  relates to an air conditioning device for a motor vehicle. The invention more specifically relates to an air conditioning device for a motor vehicle, of the type comprising a heat exchange housing in which an air flow is able to flow from an inlet to an outlet of the housing, and in which are arranged: - a first heat exchange element, said cooling element, which is able to cool said air flow, - a second heat exchange element, said heating element, which is able to heat said flow air, and - a flap which is mounted movably between a cooling position in which the air flow is oriented at least in slope towards the cooling element, and a heating position in which the air flow is oriented at least slope towards the heating element. Air conditioning is a set of operations creating and maintaining more or less high temperature conditions, relative humidity, speed and air purity, to ensure comfort here in the passenger compartment. of a motor vehicle. An air conditioning device is known which comprises a housing equipped with an inlet through which is taken an air flow and an air outlet through which the flow of conditioned air leaves. More specifically, the air flow is taken outside the housing by the air inlet of the housing, and it is then routed to a cooling element, also called evaporator, and / or a heating element, also called air heater, depending on whether it is desired to cool or heat the air flow. For this purpose, the device comprises a mobile distribution flap which, depending on its position in the housing, makes it possible to distribute all or part of the air flow towards the heating element 2909934 2 and / or to the heating element. cooling, in order to adjust the temperature of the air flow at the outlet of the housing. In contact with the cooling element, the air flow gives off heat to the cooling element. This results in a lowering of the temperature of the airflow with, correlatively, a lowering of the maximum moisture content. As a result, depending on the atmospheric conditions, condensate is often formed on the cooling element from the moisture from which the air has been discharged after it has been cooled. In known manner, the condensate, which is in the form of drops of water, oozes on the surface of the cooling element and is collected in the lower part of the housing to be discharged outwards, generally towards the ground.

For reasons of optimization of the space requirement, or because of certain layout constraints, the cooling element is sometimes arranged above the heating element. In such a configuration, the condensate may fall on the heating element, which can generate water vapor if the heating element is sufficiently hot. This formation of water vapor is detrimental to the comfort of the user of the vehicle, because it causes in particular a fogging on the windshield.

In order to overcome this drawback in particular, the invention proposes an air conditioning device of the type described above, characterized in that the flap comprises means for collecting a condensate which flows from at least the cooling element.

According to other features of the invention - the cooling element is arranged at least partly above the heating element along a vertical axis with reference to the Earth's gravity, and the shutter is interposed at 2909934. less in part, vertically between the cooling element and the heating element so that the flap is able to form a protective screen of the condensate heating element which flows from the cooling element, the shutter is a generally rectangular plate which has an upper face forming a condensate collecting means and which extends inclinedly in the casing so that the collected condensate is able to flow from said upper face to a end of the downstream end of the flap, the upper face is curved with its concavity facing upwards, the flap comprises means for discharging condensate collected consisting of a droplet; which extends from a downstream end end of the flap, to a discharge mouth of the condensate towards the outside of the housing, - the gutter comprises a discharge pipe which is made of flexible material so that the pipe is adapted to deform to adapt to the different positions of the flap, the housing comprises an internal wall for collecting the condensate, which is arranged inclined in the bottom of the housing, so that said inner wall is capable of collecting and evacuating the condensate towards the outlet of the device, the inner wall comprises a slot which extends in a vertical plane and through which a section of the discharge pipe is able to move, the device comprises a vertical plane of symmetry. Other features and advantages of the invention will appear on reading the following detailed description for the understanding of which reference will be made to the appended drawings in which: FIG. 1 is a diagrammatic perspective view, broken away, illustrating the interior of an air conditioning device 2909934 4 according to the invention, comprising a movable flap which is equipped with a condensate collection means; FIG. 2 is a sectional view through a vertical plane, which illustrates the shutter of the device of FIG. 1 in a heating position; FIG. 3 is a view similar to that of FIG. 2, which illustrates the shutter of the device of FIG. 1 in a cooling position; FIG. 4 is a view similar to that of FIG. 2, which illustrates the shutter of the device of FIG. 1 in an intermediate position. In the following description, identical, similar, or similar components will be designated by the same reference numerals.

To facilitate the understanding of the description and the claims, the terms vertical, horizontal, inferior, upper, upper, lower, transverse, longitudinal, according to the trihedron L, V, will be adopted in a nonlimiting manner and with reference to terrestrial gravity. , T indicated in the figures.

FIG. 1 shows an air conditioning device 10 for a motor vehicle (not shown), which comprises a heat exchange housing 12. The housing 12 has a first large vertical longitudinal face 14 and a second large vertical longitudinal face 16 which are opposed. In addition, the housing 12 has a peripheral edge 13 which connects each of the two large faces 14, 16 of the housing 12 so as to close the housing 12. More specifically, the housing 12 is shaped by two half-shells 15a, 15b which are here produced by plastic molding and which are assembled together sealingly, in a vertical longitudinal joint plane, as can be seen in Figure 1.

The device 10 has a longitudinal vertical symmetry plane (not shown), which here coincides with the median joint plane of the housing 12. The device 10 is able to vary the temperature of an air flow, which is shown in the figures by empty arrows, and which flows from an inlet port 18 of the housing 12 to an outlet port 20 of the housing 12. The inlet port 18 and the outlet port 20 of the housing housing 12 are here arranged in the peripheral edge 13 of the housing 12. The housing 12 comprises a first cooling heat exchange element 22, or evaporator, which is able to cool said air flow, and a second element of heating heat exchange 24 heater, which is adapted to heat said air flow.

For example, the cooling element 22 and the heating element 24, which are shown diagrammatically in FIGS. 1 to 4, each comprise a plurality of fins making it possible to increase the heat exchange surface with the flow. air.

The cooling element 22 is arranged upstream of the heating element 24 in the direction of flow of the air flow, and vertically above the heating element 24, generally in the same longitudinal vertical plane. . The housing 12 has a transverse center wall 26 which connects each of the two large faces 14, 16 of the housing 12 so as to share the interior space of the housing 12 into a first heating channel 28 and a second cooling channel 30. The heating channel 28, is the channel through which the airflow is able to be heated, it extends from the inlet port 18 of the housing 12 to the outlet port 20 of the housing 12, and contains the cooling element 22 and the heating element 24, as can be seen in FIG. 2.

The cooling channel 30, is the channel through which the airflow is able to be cooled, it extends from the inlet port 18 of the housing 12 to the outlet port 20 of the housing 12, and contains the cooling element 22, as can be seen in FIG. 3. Thus, to be heated, the airflow is blown or sucked through the heating channel 28 in which the heating element cooling 22 is inactive and the heating element 24 is active. Conversely, to be cooled, the airflow is blown or sucked through the cooling channel 30 in which the cooling element 22 is active. For this purpose, the housing 12 comprises a distribution flap 32 which, in the direction of flow of the air flow, is arranged upstream of the central partition 26 separating the two channels 28, 30, and which is interposed between the cooling element 22 and the heating element 24 of the device 10. The flap 32 is movably mounted between an end heating position in which it closes the cooling channel 30, as illustrated in FIG. 2, and an extreme cooling position in which it closes the heating channel 28, as shown in Figure 3. In addition, the flap 32 is adapted to adopt at least one intermediate position, shown in Figure 4, in which it closes partly the cooling channel 30 and partly the heating channel 28. The flap 32 is a generally rectangular plate which is here concave and generally convex downwards and which extends generally over the entire transverse width of the housing 12.

The flap 32 has an upper face 34 vis-à-vis the cooling element 22 and a lower face 36 which is slidable on a complementary portion of the central partition 26 of the housing 12, when the flap 32 is driven in 2909934 7 displacement. The upper face is concave and facing upwards. The device 10 comprises a transverse axis cylindrical drive roller 38 which is rotated, for example by means of a motorized transverse shaft 40, and which is able to cooperate by friction with the upper face 34 of the flap 32. , so that the roller 38 is able to drive the flap 32 in displacement. Without limitation, the flap 32 may be driven by means of a pinion (not shown) which meshes with a rack (not shown) shaped in the upper face 34 of the flap 32. Thus designed and arranged, the flap 32 constitutes the means for collecting or collecting the condensed drops of water, or the condensate 42, flowing downwards from the cooling element 22. Indeed, when the air flow cools in contact with the cooling element 22, the condensate 42 is formed and flows vertically downwards, by gravity, as illustrated in FIGS. 1 to 4 In particular, section 32 is arranged so that, despite an angle of pitch of the vehicle, or roll, more or less about ten degrees, the flap 32 is able to collect the condensate 42 which flows from the cooling element 22, 25 regardless of the position of the flap 32. To illustrate this characteristic, the axis AA 'of FIG. 2 represents the flow axis of the most unfavorable condensate 42 for a pitch angle of approximately ten degrees of the vehicle with respect to a vertical axis AA of rest, when the flap 32 is in its heating position. Likewise, the axis BB 'of FIG. 3 represents the flow axis of the most unfavorable condensate 42 for a pitch angle of approximately ten degrees of the vehicle with respect to a vertical rest axis 2909934 8 BB. the flap 32 is in its cooling position. As can be seen in FIG. 2, the flap 32 is curved with its concavity facing downward and extends inclined downwards in the casing 12, so that the collected condensate 42 flows from the face upper 34 of the flap 32 to a downstream end of the flap 32. Not limited to, the flap 32 and its upper face 34 may be of planar shape inclined downwards. The flap 32 comprises, in a downstream end portion, arranged in the vicinity of its transverse end 33 downstream end, a slot 44 which extends transversely over almost the entire width of the flap 32, so that the condensate 42 collected flows through said slot 44 to a gutter 48 is constituting means for discharging the condensate 42. In addition, the downstream end of the flap 32 comprises a wall 49 transverse downstream of the slot 44, which s' extends over the entire width of the flap 32 and which protrudes vertically generally upwards relative to the general plane of the upper face 34 of the flap 32, so as to "stop" the course of the condensate which flows in addition to the slot 44. The channel 48 has a transverse recovery chute 50 which is fixed on the lower face 36 of the flap 32, facing the slot 44.

In addition, the channel 48 is connected to a discharge pipe 52, a first end 54 of which is connected to a hole 51 for evacuating the bottom of the chute 50 and a second free end 56 of which is arranged in a mouth of evacuation 58 of the condensate 42 towards the outside of the housing 12.

The outlet mouth 58 is shaped in the bottom of the housing 12, preferably at the lowest level of the housing 12 along a vertical axis.

The pipe 52 is made of flexible material so that it is able to deform to adapt to the different positions of the flap 32. Thus, whatever the position of the flap 32, the free end 56 of the pipe 52 of discharge is arranged in the outlet mouth 58 of the housing 12. According to another aspect of the invention, the housing 12 has an internal wall 60 for collecting the condensate 42, which extends into the bottom of the housing 12 from the peripheral edge 13 of the housing 12, inclined in a direction opposite to that of the flap 32, so that the inner wall 60 is able to collect and discharge the condensate 42 to the outlet 58 of the device 10 The inner wall 60 has a vertical slot 62 which extends in a longitudinal vertical plane and through which a median section of the pipe 52 of the trough 48 is able to move, when the assembly consisting of the flap 32 and of the gutter 48 is driven moving. In addition, the inner wall 60 has a plurality of transverse flow slots 64, here two in number, which extend across the vertical slot 62. Thus, the condensate 42 which flows on the inner wall 60 flows through the transverse flow slots 64 and falls into the outlet mouth 58 of the housing 12.

According to an alternative embodiment not shown, the flap 32 comprises two partitions which each extend along a large edge of the upper face 34 of the flap 32, over the entire length of the flap 32, so as to prevent the condensate 42 collected from the upper face 34 to flow between the flap 32 and 30 a large face 14, 16 of the housing 12. Similarly, the flap 32 may comprise a cross section in the shape of "V", or shaped " U ", so as to channel the condensate 42 collected by the flap 32.

Claims (9)

  1. Device (10) for air conditioning for a motor vehicle, of the type comprising a heat exchange housing (12) in which a flow of air is able to flow from an inlet (18) to an outlet (20). ) of the housing (12), and in which are arranged: - a first heat exchange element, said cooling element (22), which is able to cool said air flow, - a second heat exchange element, said heating element (24), which is adapted to heat said air flow, and - a flap (32) which is movably mounted between a cooling position in which the air flow is oriented at least sloping towards the cooling element (22), and a heating position in which the air flow is oriented at least in a slope to the heating element (24), characterized in that the flap (32) comprises a means collecting (34) a condensate (42) flowing from at least the cooling element (22).
  2. Device (10) according to the preceding claim, characterized in that the cooling element (22) is arranged at least partly above the heating element (24), along a vertical axis with reference to the gravity, and in that the flap (32) is interposed, at least in part, vertically between the cooling element (22) and the heating element (24) so that the flap (32) is adapted to forming a shield of the heating element (24) of the condensate (42) flowing from the cooling element (22).
  3. Device (10) according to any one of the preceding claims, characterized in that the flap (32) is a generally rectangular plate which has an upper face (34) forming a condensate collecting means and which extends from inclined manner in the housing (12) so that the collected condensate (42) is able to flow from said upper face (34) to a downstream end end of the flap (32). 2909934 He
  4. Device (10) according to the preceding claim, characterized in that the upper face (34) is curved with its concavity facing upwards.
  5. Device (10) according to any one of the preceding claims, characterized in that the flap (32) comprises means for discharging condensate (42) collected consisting of a gutter (48) which extends from a end end of the flap (32), to a mouth (58) discharging the condensate (42) outwardly of the housing (12). io
  6. Device (10) according to the preceding claim, characterized in that the channel (48) comprises a pipe (52) of discharge which is made of flexible material so that the pipe (52) is adapted to deform for s adapt to the different positions of the flap (32). 15
  7. Device (10) according to any one of claims 5 or 6, characterized in that the housing (12) has an internal wall (60) for collecting the condensate (42), which is arranged inclined in the bottom the housing (12), so that said inner wall (60) is able to collect and discharge the condensate (42) to the outlet (58) of the device (10).
  8. Device (10) according to claims 6 and 7, characterized in that said inner wall (60) comprises a slot (62) which extends in a vertical plane and through which a section of the pipe (52) d evacuation is able to move.
  9. Device (10) according to any one of the preceding claims, characterized in that the device (10) comprises a vertical plane of symmetry.
FR0655464A 2006-12-13 2006-12-13 Air conditioning device for motor vehicle Pending FR2909934A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0655464A FR2909934A1 (en) 2006-12-13 2006-12-13 Air conditioning device for motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0655464A FR2909934A1 (en) 2006-12-13 2006-12-13 Air conditioning device for motor vehicle
PCT/EP2007/063714 WO2008071705A1 (en) 2006-12-13 2007-12-11 Air-conditioning device for automotive vehicle

Publications (1)

Publication Number Publication Date
FR2909934A1 true FR2909934A1 (en) 2008-06-20

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ID=38179668

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0655464A Pending FR2909934A1 (en) 2006-12-13 2006-12-13 Air conditioning device for motor vehicle

Country Status (2)

Country Link
FR (1) FR2909934A1 (en)
WO (1) WO2008071705A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2864929A1 (en) * 2004-01-08 2005-07-15 Valeo Climatisation Heating-ventilation and/or air-conditioning device for motor vehicle cab interior, has condensate capture unit, placed in case, having holding units that capture condensate droplets and defining openings for passage of refrigerated air flow
DE102004012871A1 (en) * 2004-03-16 2005-10-06 Volkswagen Ag Air conditioner unit for passenger cabin of vehicle, comprising receptacle and distribution system for condensate
US20060065388A1 (en) * 2004-09-30 2006-03-30 Valeo Climate Control Corp. HVAC with detached deflector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2864929A1 (en) * 2004-01-08 2005-07-15 Valeo Climatisation Heating-ventilation and/or air-conditioning device for motor vehicle cab interior, has condensate capture unit, placed in case, having holding units that capture condensate droplets and defining openings for passage of refrigerated air flow
DE102004012871A1 (en) * 2004-03-16 2005-10-06 Volkswagen Ag Air conditioner unit for passenger cabin of vehicle, comprising receptacle and distribution system for condensate
US20060065388A1 (en) * 2004-09-30 2006-03-30 Valeo Climate Control Corp. HVAC with detached deflector

Also Published As

Publication number Publication date
WO2008071705A1 (en) 2008-06-19

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