FR2720694A1 - Heating-air conditioning device for the passenger compartment of a vehicle. - Google Patents

Abstract

The invention relates to a heating-air conditioning device for the passenger compartment of a vehicle. The device comprises a cooling chamber (20) whose outlet (22) is controlled by a first adjuster (46, 48) to selectively communicate with an inlet (24) of a reheating chamber (26) or with a first inlet (28) of a distribution chamber (30), the reheating chamber (26) comprising a first outlet (36) serving vents (40) for demisting-defrosting the windshield and a second outlet (42) controlled by a second adjustment member (50) and communicating with a second inlet (44) of the distribution chamber (30). Application in particular to vehicles of large habitable volume.

Description

Heating and cooling device for the passenger compartment of a vehicle

  The invention relates to a heating-air conditioning device

of the passenger compartment of a vehicle.

  It relates more particularly to a device of this type which comprises a clean cooling chamber to be

  supplied by a pulsating air flow and containing an evaporation

  a heating chamber adapted to be fed by the cooling chamber and containing a heating radiator, and a distribution chamber adapted to be fed by the cooling chamber and / or the heating chamber and to serve mouths of distribution

  of air communicating with the passenger compartment.

  In known devices of this type, it is usually expected that

  a mixer flap to distribute the flow of air from the cooling chamber between a flow of air passing through the heating chamber before reaching the distribution chamber and another flow of air directly to the distribution chamber; the distribution of the two flows being regulated according to the user according to

the desired air temperature.

  These known devices, which are essentially suitable for conventional vehicles, do not allow to offer a separate adjustment of heating and air conditioning between the

  right side and the left side of the cockpit.

  In addition, they do not provide heating and

  rear-seat air-conditioning, except for the provision of

  are of great length that are difficult to implement and

  in addition generate significant heat losses.

  Furthermore, these known devices are not suitable for modern vehicles of the "single-body" or "monospace" type which have a strongly inclined windshield and usually extending in the extension of the engine hood, and which

  further include a dashboard of great depth.

  These modern vehicles generally have a large habitable volume, which is difficult to heat or cool.

  with traditional heating and cooling devices

  of the type indicated above.

  The object of the invention is in particular to overcome the disadvantages

mentioned above.

  It is particularly an object of the invention to provide a heating-air conditioning device of the aforementioned type, which allows independent adjustment of the right side and the left side

of the cockpit.

  It is another object of the invention to provide such a device which is suitable for vehicles of the "monobody" or "monospace" type which have a very elongated dashboard towards

forward.

  It is another object of the invention to provide such a device which facilitates heating and air conditioning in the

rear seats.

  According to the invention, the cooling chamber comprises an output controlled by a first regulator for selectively communicating with an inlet of the reheat chamber or with a first inlet of the distribution chamber, while the reheating chamber comprises a first exit serving defogging-defrost vents of the windshield and a second output (distribution outlet) which is controlled by a second adjustment member and which communicates with a second input

of the distribution chamber.

  This configuration of the device of the invention, in particular that of the distribution chamber with its first inlet fed by the cooling chamber, and its second inlet fed by the heating chamber, allows

  to implant the device on one side or the other of the

  tackle and especially under the dashboard.

  Thus, in accordance with the invention, it is possible to provide two devices arranged symmetrically on either side of the central longitudinal axis of the vehicle, and assigned to the heating-air-conditioning respectively of the right-hand part and

from the left side of the cockpit.

  The device of the invention is particularly suitable for vehicles of the "single-body" or "monospace" type and can be easily installed under the dashboard which comprises

  a particularly elongated configuration.

  According to another characteristic of the invention, the first adjustment member comprises a flap pivotally mounted between a first position in which the inlet of the reheating chamber is open, while the first inlet of the distribution chamber is closed, and a second position in which the inlet of the heating chamber is closed while the first inlet of the distribution chamber is open, this flap can also take any intermediate position between this first position and

this second position.

  This flap thus makes it possible to direct the flow of pulsed air that has passed through the evaporator, either towards the reheating chamber, or towards the distribution chamber, or towards both at the same time.

time.

  Advantageously, this first adjustment member comprises, in addition to

  the aforementioned shutter, a second pivoting shutter which is synchronized

  nisé with him to control the communication of the room

  cooling with the distribution chamber.

  Advantageously, the inlet of the heating chamber is located laterally with respect to the outlet of the cooling chamber, while the first inlet of the distribution chamber is located opposite the outlet of the cooling chamber.

cooling chamber.

  The cooling chamber may be arranged in a generally longitudinal direction of the vehicle, while the reheating chamber and the distribution chamber may both be disposed in an orientation

generally transverse.

  The second adjustment member advantageously comprises a flap pivotally mounted between a first position in which the second outlet (distribution outlet) of the reheating chamber is closed, and a second position in which

this second exit is open.

  The first adjusting member and the second adjusting member are advantageously actuated by control means to take different configurations, in particular a so-called "winter" configuration with the first member in the first position and the second member in the first position, a configuration so-called "half-season" with the first member in first position and the second member in second position, and a configuration called "summer" with the first member in second position and the second member in

first position.

  According to another characteristic of the invention, the first outlet of the reheating chamber is permanently open and in communication with the demister-defrost vents

windshield.

  Advantageously, the distribution chamber has an elongated configuration, its first inlet and its second inlet being spaced from each other in a substantially horizontal direction and transversely to the passenger compartment of the vehicle. As a result, this distribution chamber can be implanted transversely and be housed under the dashboard to feed a central aerator and at least one

  side aerator of this dashboard.

  The device of the invention can be implanted under the dashboard of the vehicle, either on the right side or on the left side, the first inlet of the distribution chamber being located near one side of the vehicle body and the second inlet of the distribution chamber being located

  near the central longitudinal axis of the vehicle.

  We can then provide a similar device, but of symmetrical configuration, located on the other side of the axis

longitudinal center of the vehicle.

  Because the dispensing chamber can be housed transversely in the dashboard, it can have an outlet located near one side of the vehicle body to feed a lateral duct integrated into a

  door and / or a conduit housed under the floor.

  This also makes it possible to ensure the heating of the rear seats directly, without it being necessary to provide

  long pipes subject to thermal losses.

  In the description that follows, given as an example, we

  refers to the accompanying drawings, in which: - Figure 1 is a partial view from above of a vehicle equipped with a device according to the invention shown in the configuration called "winter";

  FIG. 2 is an enlarged detail of FIG.

  re 1; - Figure 3 is a schematic sectional view along the line III-III of Figure 1; and FIGS. 4 and 5 are views similar to those of FIG. 1, respectively in the "half-season" configuration

  and in the "summer" configuration of the device.

  Referring first to Figure 1 which represents

  partially a vehicle V of the "monocorps" or "monospace" type

  this "equipped with a heating-ventilation device according to the invention generally designated by the reference 10. The device 10 shown is located on the left side (driver's side) of the passenger compartment H of the vehicle being housed under the board B. As will be seen below, the device 10 is reserved for the heating-air conditioning of the left part of the passenger compartment.An analogous device 10 '(only the contour of which is shown) being implanted on the right side of the passenger compartment. cabin, also under the dashboard, and assigned to the heating-air conditioning of the right part of the passenger compartment H. In the type of vehicle represented, the board B is very elongated forwards and offers an important place for

devices 10 and 10 '.

  The device 10 comprises a blower 12 implanted under the front of the dashboard B and near the left flank FG of the bodywork. The blower 12 includes an inlet 14 adapted to admit air from outside or recirculated air from inside the cabin. This air can be optionally filtered by the addition of a filter in the region of the inlet 14. The blower 12 comprises a volute 16 which opens on an evaporator 18 implanted near the left flank FG in an oblique position inside. of a cooling chamber 20. This chamber is also located near the left flank FG and has an outlet 22 which extends in a direction substantially transverse to the axis XX. Through the outlet 22 flows an air flow possibly conditioned (if the evaporator is operated) that can communicate selectively with an inlet 24 of a reheating chamber 26 or with a first inlet 28 of a chamber 30 (Figures

1 and 2).

  The inlet 24 of the reheating chamber is located lateral-

  relative to the outlet 22 of the cooling chamber and communicates with the reheating chamber 26 by

  via a conduit 32 (Figures 1 to 3).

  On the other hand, the first entry 28 of the distribution chamber

  30 is located opposite exit 22 from the

cooling 20.

  The heating chamber 26 extends in one direction

  substantially transverse and close to the central axis XX.

  This chamber 26 contains a heating radiator 34 (FIGS. 1 and 3) and has, downstream of the radiator 34, a first outlet 36 serving, via a

  pipe 38, defogger-defrost vents 40 of the

  P. The reheating chamber 26 further has a second outlet 42 (distribution outlet) which communicates with a

  second inlet 44 of the distribution chamber 30.

  Chamber 30 extends in a generally

  cross-section of the vehicle and practically over the entire half

  width (left side) of the dashboard. The distribution chamber 30 thus has a generally elongate configuration, its first inlet 28 and its second inlet 44 being spaced from each other in a direction substantially

  horizontally and transversely to the passenger compartment of the vehicle.

  As seen in Figure 1, the first input 28 is near the left flank FG, while the second input

44 is near the XX axis.

  Exit 22 of the cooling chamber is controlled

  by two synchronized shutters 46 and 48 (Figures 1 and 2).

  The flap 46 is pivotally mounted between a first position (shown in solid lines in FIGS. 1 and 2) in which the inlet 24 of the heating chamber 26 is open while the first inlet 28 of the distribution chamber 30 is closed. and a second position (shown in broken lines in FIGS. 1 and 2) in which the inlet 24 of the heating chamber 26 is closed while the first inlet 28 of the distribution chamber 30 is open, the flap 46 being furthermore take any intermediate position between this first

position and this second position.

  The flap 48 is pivotally mounted in synchronism with the flap 46 and simultaneously occupies the positions represented in FIG.

  continuous line and broken line in Figure 1.

  When the flap 46 is respectively in the first position and the second aforementioned position, the flap 48 closes

  and respectively opens access to the distribution chamber

30.

  The device 10 further comprises a second adjusting member consisting of a flap 50, pivotally mounted about a horizontal axis, and controlling the second outlet 42 of the

heating chamber 26.

  The flap 50 can pivot between a first position (FIGS. 1 and 3) in which the second outlet 42 (distribution outlet) of the heating chamber is closed and a second position in which this second outlet is

  open (flap shown in broken line in the

re 3).

  Thus, the hot air having passed through the radiator 34 is divided

  in two streams of air, one that feeds the vents

  40, and the other which may or may not supply the distribution chamber 30 according to the position adopted

by section 50.

  The distribution chamber 30 is housed in the front part of the dashboard and supplies at least one central aerator 52 and a lateral aerator 54. Furthermore, as shown in FIG. 1, the distribution chamber 30 has an outlet 56 situated near the side (left flank FG) of the vehicle body and suitable for supplying a lateral duct 58 integrated in a door and / or a duct housed under the floor to provide heating and / or air conditioning of a rear seat, c 'ie behind the

  front seat SA driver in the example shown.

  The device of the invention can take various configurations and in particular the following configurations: In the so-called "winter" configuration shown in FIG. 1, the flaps 46 and 48 are in their first position, while

  that the flap 50 is in its first position.

  Outside air or recirculated through the evaporator 18 (which is closed), then leaves the outlet 22 of the chamber 20 to enter directly into the reheating chamber 26 after passing through the radiator 34 which is running. As the shutter 50 closes the second outlet 42 of the chamber 26, the flow of hot air produced at the outlet of the radiator 34 supplies

  the defrost-defogging vents 40.

  In the configuration called "half-season" shown in Figure 4, the flaps 46 and 48 are still in their first position, while the flap 50 is now in

  its second position, that is to say in the open position.

  As a result, the flow of hot air leaving the reheating chamber 36 is divided into two streams, one of which feeds the defrost-defogger ports 40 and the other the distribution chamber 30 and, therefore, the aerators 52, 54

and the mouth 56.

  In the so-called "summer" configuration of FIG. 5, the flaps 46 and 48 are in their second position, while the flap

is in his first position.

  The blower is powered by recirculated air from the cabin. With the evaporator running, a flow of conditioned air leaves the cooling chamber 20 and feeds only the distribution chamber 30, the outlet 24 leading to the chamber

26 being closed by the flap 46.

  Air conditioning then supplies the aerators 52 and 54

  as well as the exit 56 leading to the conduits 58 and 60.

  Other configurations are possible with the shutters in

intermediate positions.

  Of course, the different distribution outlets (aerators 52 and 54 and mouth 56) can also be provided with

of flow control members.

  The device of the invention finds a particular application

  to the heating and air conditioning of the passenger compartment

  vehicles of the "single-body" or "monospace" type.

It

Claims (12)

claims   1.- Heating-air conditioning device for the passenger compartment of a vehicle, comprising a cooling chamber (20) capable of being supplied by a pulsed air flow and containing an evaporator (18), a heating chamber (26) ) adapted to be supplied by the cooling chamber and containing a heating radiator (34), and a distribution chamber (30) adapted to be fed by the cooling chamber and / or the heating chamber, and to serve air distribution mouths (52,54,56) communicating with the passenger compartment, characterized in that the cooling chamber (20) comprises an outlet (22) controlled by a first adjusting member (46,48) for selectively communicating with an inlet (24) of the reheating chamber (26) or with a first inlet (28) of the distribution chamber (30), and in that the reheating chamber (26) comprises a   first exit (36) serving mouths (40) of   windshield defrosting and a second exit (42) (output   distribution portion) which is controlled by a second adjustment member (50) and which communicates with a second input   (44) of the distribution chamber (30).   2.- Device according to claim 1, characterized in that the first adjusting member comprises a flap (46) pivotally mounted between a first position in which the inlet (24) of the reheating chamber (26) is open, while that the first inlet (28) of the distribution chamber (30) is closed, and a second position in which the inlet (24) of the heating chamber (26) is closed,   while the first input (28) of the distribution chamber   (30) is open, the flap (46) can additionally take any intermediate position between this first position and this second position.   3.- Device according to claim 2, characterized in that the first adjustment member comprises, in addition to the flap   (46), a second pivoting flap (48) which is synchronous   together with it to control the communication of the cooling chamber (20) with the distribution chamber (30).   4.- Device according to one of claims 1 to 3, characterized   in that the inlet (24) of the heating chamber (26) is located laterally with respect to the outlet (22) of the cooling chamber (20), while the first inlet (28) of the distribution (30) is located opposite the outlet (22) of the cooling chamber (20).   5.- Device according to one of claims 1 to 4, characterized   in that the second adjusting member comprises a flap (50) pivotally mounted between a first position in which the second outlet (42) (distribution outlet) of the reheating chamber (26) is closed and a second position in   which this second output is open.   6.- Device according to claim 5, characterized in that the first adjusting member (46,48) and the second adjusting member (50) are actuated by control means to assume different configurations including the following configurations: - so-called "winter" configuration in which the first member is in the first position and the second member in the first position, - so-called "half-season" configuration in which the first member is in the first position and the second member in the second position, - called configuration "summer" in which the first member is in second position and the second member in first position.   7.- Device according to one of claims 1 to 6, characterized   in that the first outlet (36) of the chamber of   reheating (26) is permanently open and in communica-   with the defogger-defrost vents (40) of the breeze.   8.- Device according to one of claims 1 to 7, characterized   in that the distribution chamber (30) has a configuration   elongate, its first inlet (28) and its second inlet (44) being spaced from each other in a substantially horizontal direction and transversely to the passenger compartment of the vehicle.   9.- Device according to one of claims 1 to 8, characterized   Raised in that it is designed to be seated under the dashboard of the vehicle, either on the right side or the left side, the first inlet (28) of the distribution chamber being located near one side (FG) of the vehicle body and the second inlet (42) of the distribution chamber (30) being located near the central longitudinal axis (XX) of the vehicle.   10.- Device according to one of claims 1 to 9,   characterized in that a similar device (10 '), but of symmetrical configuration, is located on the other side of the axis   longitudinal center (XX) of the vehicle.   11.- Device according to one of claims 1 to 10,   characterized in that the distribution chamber (30) is housed in the dashboard and feeds a central aerator   (52) and at least one side aerator (54).   12.- Device according to one of claims 1 to 11,   characterized in that the distribution chamber (30) comprises an outlet (56) located near one side (FG) of the bodywork and adapted to feed a lateral duct (58) integrated into a door and / or a duct (60). ) housed under the floor of the vehicle.