FR3064534A1 - THERMAL TREATMENT ASSEMBLY FOR A VEHICLE COMPRISING RADIANT PANELS - Google Patents

Abstract

The invention relates to a heat treatment assembly (100) for a passenger compartment (4) of a vehicle (1), in particular an automobile, comprising: a ventilation, heating and / or air conditioning installation (3) intended to send a stream of treated air (F4) in the passenger compartment (4), - at least one radiant panel (2), and - a control module (8) configured to control a power supply of the radiant panel (s) (2), characterized in that the control module (8) is arranged in the ventilation, heating and / or air conditioning system (3) so as to be exposed to an internal air flow (F3) circulating inside the the ventilation, heating and / or air conditioning system (3).

Description

© Publication no .: 3,064,534 (to be used only for reproduction orders)

©) National registration number: 17 52690 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY

COURBEVOIE © IntCI ⁸

B 60 H 1/00 (2017.01), B 60 H 1/22

A1 PATENT APPLICATION

©) Date of filing: 30.03.17. © Applicant (s): VALEO THERMAL SYSTEMS ©) Priority: Simplified joint stock company - FR. @ Inventor (s): GUIGOU PASCAL, BARAT DIDIER and NEVEU DANIEL. (43) Date of public availability of the request: 05.10.18 Bulletin 18/40. ©) 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.

FR 3 064 534 - A1

HEAT TREATMENT ASSEMBLY FOR A VEHICLE COMPRISING RADIANT PANELS.

The invention relates to a heat treatment assembly (100) for a passenger compartment (4) of a vehicle (1), in particular an automobile, comprising:

- a ventilation, heating and / or air conditioning installation (3) intended to send a treated air flow (F4) into the passenger compartment (4),

- at least one radiant panel (2), and

- a control module (8) configured to control an electrical supply to the radiant panel (s) (2), characterized in that the control module (8) is arranged in the ventilation, heating and / or air conditioning installation (3) so as to be exposed to an internal air flow (F3) circulating inside the ventilation, heating and / or air conditioning installation (3).

i

The field of the present invention is that of vehicles, in particular motor vehicles, comprising radiant panels whose operation is regulated by a control module. The invention relates more particularly to heat treatment assemblies fitted to vehicles, comprising such radiant panels and an air conditioning installation.

Vehicles, in particular motor vehicles, are commonly equipped with a ventilation, heating and / or air conditioning installation, also called an air conditioning installation, dedicated to improving the comfort of the vehicle interior.

Conventionally, the air conditioning installation is organized to take air from the outside of the vehicle and / or air from the passenger compartment of the vehicle. The sampled air is set in motion by means of a motor-fan unit fitted to the air conditioning installation, then is heat treated according to the needs of the passenger's thermal comfort.

The air conditioning installation thus includes a heat treatment chamber for the air flow which can make it possible to cool the air flow or, conversely, to heat the air flow. For this purpose, the heat treatment chamber comprises at least one heat exchanger with circulation of fluid. Thus, according to the needs of the passenger compartment, the air flow is optionally heat treated by the heat treatment chamber before it is sent to the passenger compartment of the vehicle.

Furthermore, document FR2976855 discloses vehicles comprising at least one radiant panel installed in the passenger compartment of the vehicle. This radiant panel improves the feeling of comfort felt by vehicle users. The operation of this radiant panel can be controlled by a control module.

However, during operation, such a control module generates a large amount of calories which needs to be dissipated.

In the context of a reduction in the energy balance of both the vehicle and the air conditioning installation while remedying the aforementioned drawbacks, the present invention aims to provide a set of heat treatment for a vehicle interior , especially automotive, comprising:

- a ventilation, heating and / or air conditioning installation, or in other words an air conditioning installation, intended to send a flow of treated air into the passenger compartment,

- at least one radiant panel, and

- a control module configured to control an electrical supply to the radiant panel (s).

According to the invention, such a heat treatment assembly is remarkable in that the control module is arranged in the ventilation, heating and / or air conditioning installation so as to be exposed to an internal air flow circulating at inside the ventilation, heating and / or air conditioning system.

In other words, at least one heat dissipating part of the control module is housed inside the ventilation, heating and / or air conditioning installation, being located on the passage of the internal air flow, so to participate in the cooling of the control module.

Thus, the exposure of the control module to the internal air flow makes it possible to cool it while eliminating a cooling device which would be exclusively dedicated to it and which would entail additional electrical consumption. The energy balance linked to the operation of the radiant panel (s) is thus improved.

In addition, the heat given off by the control module is taken up by the internal air flow directed towards the passenger compartment. As low as it is, the heat released by the control module is exploited to participate in the heating of the passenger compartment of the vehicle. In other words, the heat released by the control module is recovered by being taken up by the internal air flow.

According to different characteristics of the invention, taken alone or in combination, it can be provided that:

- The ventilation, heating and / or air conditioning system includes a heat exchanger intended to cool the internal air flow. The heat exchanger is for example an evaporator.

- According to a direction of circulation of the internal air flow through the ventilation, heating and / or air conditioning installation, the control module is placed downstream of a heat exchanger intended to cool the air flow internal. Thus, the control module is cooled by an air flow previously cooled by this heat exchanger. In other words, the internal air flow is cooled by being heat treated by an evaporator fitted to the ventilation, heating and / or air conditioning installation. The cooling of the control module by the ventilation, heating and / or air conditioning installation is thus improved, when the control module is located downstream of the evaporator, in a direction of circulation of the internal air flow.

- The ventilation, heating and / or air conditioning installation includes at least one heat exchanger intended to heat the internal air flow. The heat exchanger is for example a radiator, such as a fluid circulation radiator, a condenser of a refrigerant circuit, or an electric heating device comprising elements with a positive temperature coefficient, or another device. air heat treatment to heat the air flow.

- According to a direction of circulation of the internal air flow through the ventilation, heating and / or air conditioning installation, the control module is placed upstream of a heat exchanger intended to heat the air flow internal. This prevents the control module from being exposed to a flow of air heated by this heat exchanger.

- The internal air flow includes a mixture between an air flow outside the vehicle and a flow of air to be recycled from the passenger compartment. In this case, the internal air flow may have a moderate temperature.

- The internal air flow circulating inside the ventilation, heating and / or air conditioning installation is intended to cool the control module. Thus, it is understood that in the event of heating of the air flow, the control module is not exposed to the heated air flow. In other words, the control module is not placed in a location through which the flow of air heated by a heat exchanger intended to heat that includes the ventilation, heating and / or air conditioning installation. This is the case when the control module is upstream of the heat exchanger intended to heat the internal air flow, according to the direction of circulation of this internal air flow in the ventilation, heating installation. and / or air conditioning.

- The control module is thus located upstream of the heat exchanger intended to heat the internal air flow, it can alternatively be located at a location not crossed by the heated air flow.

- According to a direction of circulation of the internal air flow through the ventilation, heating and / or air conditioning installation, the control module is arranged upstream of at least one outlet opening allowing the flow of air to be evacuated. internal air to the passenger compartment, the latter becoming a treated air flow. The outlet is an interface between the ventilation, heating and / or air conditioning installation and the passenger compartment of the vehicle. In other words, at least one outlet mouth forms an opening of the ventilation, heating and / or air conditioning installation opening into the passenger compartment. Thus, it is understood that the control module is exposed to the internal air flow inside the ventilation, heating and / or air conditioning installation, before the injection of this air flow into the passenger compartment. .

- The control module is located between an evaporator and a heat exchanger intended to heat the internal air flow. More specifically, the control module is located downstream of the evaporator and upstream of this heat exchanger.

- More particularly in a direction of circulation of the internal air flow through the ventilation, heating and / or air conditioning installation, the control module is arranged upstream of a component for mixing the internal air flow . Said mixing flap is placed downstream of the heat exchanger intended to cool the internal air flow. This flap is intended for distributing the internal air flow selectively to a heat exchanger intended to heat the internal air flow or to a bypass duct making it possible to bypass the heat exchanger intended to heat the air flow. . Such a mixing component controls and determines the quantity of hot air and cold air to be mixed, in order to obtain the flow of treated air.

- The control module is located in the bypass duct.

- The control module is arranged in an air intake duct in the ventilation, heating and / or air conditioning installation. The air admitted to the ventilation, heating and / or air conditioning installation may be a flow of air outside the vehicle, or a flow of air to be recycled from the passenger compartment of the vehicle. Thus, the duct dedicated to the conveyance of air admitted into the ventilation, heating and / or air conditioning installation may be a duct for admitting the outside air flow, or according to a variant a duct of the recirculated air flow.

- The intake duct is open on the outside of the vehicle. In other words, this intake duct allows the admission of outside air, or outside air flow, into the ventilation, heating and / or air conditioning installation.

- According to a direction of circulation of the internal air flow through the ventilation, heating and / or air conditioning installation, the control module is placed at the outlet of a mixing chamber. Such a mixing chamber is dedicated to mixing between an air flow outside the vehicle and a flow of air to be recycled from the passenger compartment of the vehicle.

- The control module is located between the mixing chamber and the heat exchanger intended to cool the internal air flow.

- The control module is located in the mixing chamber.

- According to a direction of circulation of the internal air flow through the ventilation, heating and / or air conditioning installation, the control module is placed downstream of at least one particle filter that the installation of ventilation, heating and / or air conditioning. The particle filter protects the control module from possible air pollution.

- The radiant panels are arranged in the direction of areas intended to be occupied by one or more users of the vehicle.

- Each radiant panel includes a plurality of resistors.

- A heating power of the radiant panels is regulated by the control module, in particular by a variation of the voltage of the electric current supplying one or more resistors equipping the radiant panels.

- The electrical supply of the electrical resistors is regulated by the control module. When activated by the control module, the radiant panels provide in particular a supply of heat to the users by radiation, such as for example infrared radiation. In this context, the control module is in particular a member for regulating the voltage of the electric current supplying the radiant panels and more specifically the resistors with which they are provided.

- The control module comprises at least one field effect transistor.

- The control module comprises at least one electronic component formed by a unipolar transistor of the MOSFET type, according to the acronym of the expression in English language Metal Oxide Semiconductor Field Effect Transistor.

- The control module comprises at least one field effect transistor with insulated gate type 1GBT, according to the acronym of the expression in English lnsulated Gâte Bipolar Transistor.

- The control module is configured to regulate the electrical supply of at least one radiant panel by pulse width modulation of a control signal. In other words, the control module is of the PWM type, according to the acronym of the expression in English language Puise Width Modulation.

- The control module is configured to regulate the electrical supply of at least one radiant panel by a linear control signal. This control signal is, in particular, constant.

- The control module is configured to control at least one switch which selectively authorizes the supply or deactivation of electricity, in other words non-supply, of at least one of the electrical resistors fitted to at least one radiant panel.

- The control module is configured to control at least one switch selectively authorizing a series connection or a parallel connection of at least one of the two electrical resistors equipping at least one radiant panel.

- The control module is configured to reverse the supply voltage of at least one radiant panel so as to activate or deactivate the passage of current in at least one diode arranged along at least one electrode of the panel.

- The regulation of the electrical supply of the radiant panel (s) by the control module is effected by a selective activation of one or more switches, such as switches, arranged on the electrical supply circuit of the radiant panel (s) , and between at least two electrical resistances equipping the same radiant panel or two separate radiant panels. The variation of the electrical voltage across the terminals of the radiant panel (s) is thus achieved by activating the switch (s), or electrical switches, to connect together at least two resistors of the same radiant panel, or of two separate panels, selectively in series or in parallel.

For example at a given time, via one or more switches controlled by the control module:

- at least one group of two resistors of a radiant panel can be connected together in series or in parallel,

- at least one group of two resistors of a radiant panel and at least one other group of two resistors of the same radiant panel can be connected together in series or in parallel,

- At least one group of two resistors of a radiant panel can be connected together in series and be connected in parallel with at least one other group of resistors comprising at least one resistance.

From various possible combinations at a given time of connection between at least two resistors of a radiant panel, it is possible to vary precisely and reliably the electrical supply voltage of the radiant panel, by means of of the control module ordering operation of the switch (s).

- The switch is a switch, or a relay, or a power transistor, or a diode.

- The control module is configured to control at least one switch, such as a switch, selectively authorizing power supply or de-power supply, namely non-power supply, of a first group of electrical resistors equipping at least one radiant panel.

- The control module is configured to control at least one switch selectively authorizing a series connection or a parallel connection of a first group of resistors comprising at least two electrical resistors equipping at least one radiant panel.

- The at least one radiant panel comprises a second resistance group comprising at least one resistance, the second group being mounted in parallel with the first resistance group.

- The control module is configured to regulate the electrical supply of at least one electrical component equipping the ventilation, heating and / or air conditioning installation. Of course, this electrical member is distinct from the control module itself. Thus, the cooling of the control module by the internal air flow is used to optimize its ability to regulate several electrical elements. The control module can be used not only to regulate the electrical supply of several radiant panels, but also to regulate the electrical supply of at least one electrical component equipping the ventilation, heating and / or air conditioning installation.

- At least one of the electrical components is a motor-fan unit fitted to the ventilation, heating and / or air conditioning installation. More specifically, the control module is configured to control the power supply to a fan of the m oto-fan group.

Other characteristics, details and advantages of the invention and its operation will emerge more clearly on reading the description given below for information, in relation to the appended figures, in which:

- Figure 1 is a schematic illustration of an example of a motor vehicle equipped with a heat treatment assembly according to the invention.

FIG. 2 is a diagram illustrating an exemplary embodiment of a heat treatment assembly according to the invention,

FIGS. 3a and 3b illustrate an example of regulation by a module for controlling the operation of a radiant panel that includes a heat treatment assembly according to the invention,

- Figure 4 is an illustration of another example of regulation by a control module of the operation of a radiant panel that includes a heat treatment assembly according to the invention.

It should first be noted that if the figures show the invention in detail for its implementation, they can of course be used to better define the invention if necessary. Similarly, it is recalled that, for all of the figures, the same elements are designated by the same references.

FIG. 1 shows a motor vehicle 1 equipped with a heat treatment assembly 100 comprising a ventilation, heating and / or air conditioning installation 3 and radiant panels 2, the electrical supply of which is controlled by a control module 8.

The ventilation, heating and / or air conditioning installation 3 is dedicated to the overall thermal treatment of the air in the passenger compartment 4 by distributing a flow of treated air F4 in the passenger compartment 4 · It is note that a user can for example activate at least one of the radiant panels 2, independently of the overall treatment of the air in the passenger compartment 4 by the installation of ventilation, heating and / or air conditioning 3 ·

The ventilation, heating and / or air conditioning installation 3 comprises a housing 10 in which a motor-fan unit 12 is installed. The motor-fan unit 12 includes a volute 12a in which a fan 12b is located (cf. FIG. 2). This motor-fan unit 12 has the function of generating an air flow F3 circulating inside the ventilation, heating and / or air conditioning installation 3 · For the sake of brevity, this air flow F3 circulating inside the ventilation, heating and / or air conditioning installation 3 is called, in what follows, internal air flow F3.

In order to supply air to the passenger compartment 4> the housing 10 comprises at least one inlet mouth 11a, 11b for admitting an air flow to be treated F1, F2 and at least one outlet mouth 9a 9d for the distribution of the treated air flow F4 to the passenger compartment 4 · More particularly, the housing 10 comprises a first inlet mouth 11a for the admission of an air flow to be treated coming from the outside Fl , said external air flow F1, and a second inlet mouth llb for the admission of an air flow to be treated coming from the passenger compartment F2, said air flow to recycle F2. Inside the installation 3, the outside air stream F1 and the air stream to be recycled F2 are called internal air stream F3. The internal air flow F3 can then be heat treated to then be distributed to the passenger compartment 4 · For this, the housing 10 is provided with at least four outlet openings 9a-9d allowing the evacuation and distribution of the flow internal air F3 in a treated air flow F4 to the passenger compartment 4 ·

To perform its heating function, the ventilation, heating and / or air conditioning installation 3 may comprise a heat exchanger 17 intended to heat a fluid, such as the internal air flow F3. This heat exchanger 17, installed in the housing 10, is for example of the fluid circulation type, such as a radiator 17a (cf. FIG. 2). The heat exchanger 17 can also be of the electric type, such as an electric heating device 17b comprising elements with a positive temperature coefficient (cf. FIG. 2). Optionally, the ventilation, heating and / or air conditioning installation 3 can comprise both a radiator 17a and an electric heating device 17b.

To perform its air conditioning function, the ventilation, heating and / or air conditioning installation 3 may include a heat exchanger 16 intended to cool a fluid, such as the internal air flow F3. This heat exchanger 16, installed in the housing 10, is of the fluid circulation type, such as an evaporator 16a or another thermal air treatment device capable of cooling the air flow.

In order to guide the internal air flow F3 inside the ventilation, heating and / or air conditioning installation 3 to the various heat exchangers 16a, 17 which it comprises, the installation 3 and in particular the housing 10 include conduits 13a, 13b, chambers 15a, 15b and flaps 14a, 14b, as will be described later, with reference to FIG. 2.

The ventilation, heating and / or air conditioning system 3 and the radiant panels 2 can be activated manually or automatically to meet a demand for comfort in the passenger compartment 4 ·

The radiant panels 2 provide comfort that is appreciated by users and have the advantages of being silent in operation and of providing a heat source with little fluctuation in temperature, compared to heat transmitted by the air flow from the installation 3 ·

The radiant panels 2 are distributed in the passenger compartment 4 of the vehicle 1 to locally generate heat in the direction of the areas intended to be occupied by one or more users of the vehicle 1. According to the embodiment illustrated in FIG. 1, the radiant panels 2 are placed on different interior surfaces of the passenger compartment 4, such as the vehicle roof, the door walls, a lower part of the dashboard such as the cellar, the vehicle floor or the backrests seats 7 · Of course, other interior surfaces could be fitted with radiant panels 2 depending on the configuration of the passenger compartment 4 and / or according to the needs of the users of the vehicle 1. By interior surfaces is meant surfaces facing towards cockpit areas 4 occupied by users.

The radiant panels 2 include resistive elements which provide heat by infrared radiation. To this end, and as shown in FIG. 2, the radiant panels have a body in which resistors 6 are integrated, generating infrared radiation. Resistors 6 can be wired or surface. A radiant panel 2 includes one or more resistors 6.

More precisely, also referring to FIG. 2, the radiant panels 2 comprise, according to this example, several electrical resistors 6a-6d which are supplied electrically at a voltage defined by the control module 8. Thus, the heating power of the panels radiant heaters is controlled by the control module 8. More precisely, according to a request from a user, the control module 8 can regulate the voltage of the electric current supplying the resistors 6, in different ways as will be described later in reference to Figures 3a to 4 ·

The control module 8 then regulates the heating power of each of the radiant panels 2, independently of each other. The control module 8 can also regulate the heating power of each of the resistors 6, independently of one another, within the same radiant panel 2 or on different radiant panels 2.

The control module 8 being subjected to heating during its operation, it is advantageously housed inside the ventilation, heating and / or air conditioning installation 3 · More specifically, the control module 8 is located at a location crossed or licked by the internal air flow F3 circulating through the ventilation, heating and / or air conditioning installation 3 · This internal air flow F3 then makes it possible to cool the control module 8. This cooling of the control module 8 optimizes its ability to regulate the operation of the radiant panels 2.

The embodiment illustrated by FIG. 1 shows that the control module 8 is placed on the path of the internal air flow F3, upstream of the outlet openings 9a-9d through which the internal air flow F3 is evacuated from the ventilation, heating and / or air conditioning installation 3 in a treated air flow F4 sent into the passenger compartment 4 of the vehicle 1. Such outlet openings 9a-9d therefore form interfaces between the installation of ventilation, heating and / or air conditioning 3 and the passenger compartment 4 · The location of the control module 8 will be described later, with reference to Figure 2.

More particularly, the ventilation, heating and / or air conditioning installation 3 is configured to take the flow of outside air F1 and / or the flow of air to be recycled F2 from which the treated air flow F4 sent in the passenger compartment 4 is generated. The external air flow F1 and the air flow to be recycled F2 can be mixed to form an air mixture F1-F2 which is if necessary heat treated by the ventilation, heating and / or air conditioning installation 3 · An activation of the motor-fan unit 12 generates a suction of the external air flow F1 and / or of the air flow to be recycled F2 in the housing 10 of the ventilation, heating and / or air conditioning installation 3 ·

FIG. 2 shows that the outside air flow F1 admitted into the installation 3 circulates through a first intake duct 13a and the air flow to be recycled F2 admitted into the installation 3 circulates through a second duct d admission 13b. A distribution flap 14a makes it possible to regulate the respective amounts of air coming from the exterior F1 and of air coming from the passenger compartment F2 admitted into the ventilation, heating and / or air conditioning installation 3 ·

In the example illustrated in FIG. 2, the first conduit 13a and the second conduit 13b converge towards a mixing chamber 15a which, here, houses the motor-fan unit 12. The distribution flap 14a is placed at the point of convergence between the first intake duct 13a and the second intake duct 13b, thus its maneuver makes it possible to regulate the quantities of the external air flow F1 admitted and the quantities of the recycled air flow F2 admitted into the mixing chamber 15a, these air flows F1, F2 being taken individually or mixed together in a variable quantity according to the position of this distribution flap 14a.

The mixing chamber 15a opens onto a heat treatment chamber 15b via a third conduit 13c, called the transfer conduit. The heat treatment chamber 15b includes heat exchangers such as the evaporator 16a, the radiator 17a and the electric heater 17b. A mixing flap 14b makes it possible to regulate the quantity of the internal air flow F3 circulating through the radiator 17a for its heating and the quantity of the internal air flow F3 which can bypass this radiator 17a to avoid its heating. To bypass the heat exchangers 17a, 17b intended to heat the internal air flow F3, the internal air flow F3 is directed towards a fourth duct 13d called the bypass duct. The bypass duct 13d allows the internal air flow F3 not to pass through the heat exchangers 17a, 17b intended for heating.

According to the example illustrated, the bypass duct 13d opens into a mixing chamber 15c supplied by the internal air flow F3 coming from the bypass duct 13d and / or the internal air flow F3 having passed through the heat exchangers 17a, 17b intended to heat the internal air flow F3. This mixing chamber 15c extends to the outlet openings 9a-9d.

One or more particle filters 19a, 19b, 19c may be arranged inside at least one of the conduits 13a, 13b, 13c, 13d through which the internal air flow F3 circulates. For example, a particle filter 19c is placed in the third conduit 13c to filter the air mixture F1-F2 before it enters the heat treatment chamber 15b. The particle filters 19a, 19b, 19c can for example be housed in the first intake duct 13a, the second intake duct 13b, the transfer duct 13c and / or the bypass duct 13d.

Of course, other configurations of the ventilation, heating and / or air conditioning installation 3 are possible. The configuration just described is given by way of example only.

The control module 8 can be placed in various locations 20a, 20b,

20c, 20d inside the ventilation, heating and / or air conditioning installation 3 in order to be exposed to the internal air flow F3 moving inside this installation 3 · Generally , the control module 8 is placed upstream of the outlet openings 9a-9d in a direction Si of circulation through the ventilation, heating and / or air conditioning installation 3 of the internal air flow F3.

The cooling of the control module 8 is obtained by ventilation, preferably being swept by a flow of cold air, that is to say a flow of air having a temperature below the temperature of the outside environment or of the passenger compartment of the vehicle. According to the embodiment illustrated in FIG. 2, the control module 8 is installed, at a first location 20a, at the outlet of the evaporator 16a, that is to say downstream of the evaporator 16a according to the direction of circulation of the internal air flow F3. More specifically, the control module 8 is located upstream of the radiator 17a. The control module 8 is thus found between the evaporator 16a and the radiator 17a. It should be noted that the operation of the evaporator 16a can be activated or deactivated at the request of a user, the control module 8 is therefore exposed to the internal air flow F3 which can be cooled by the evaporator 16b. The control module 8 is, for example, fixed to a wall of the heat treatment chamber 15b.

This first location 20a makes it possible to obtain cooling of the control module 8, either by the internal air flow F3 cooled by the evaporator 16a, when the evaporator 16a is active, or by the internal air flow F3 having a moderate temperature, when the evaporator 16a is inactive. The moderate temperature of the internal air flow F3 corresponds to the average of the temperatures of the external air flow F1 and of the air flow to be recycled F2 weighted as a function of their quantities admitted into the mixing chamber 15a. The first location 20a also makes it possible to protect the control module 8 from particles contained in the internal air flow F3, due to the presence of the particle filter 19c placed in the transfer duct 13c.

It should be noted that according to this exemplary embodiment, the control module 8 is located upstream of the mixing flap 14b. Of course, the control module 8 could also be located downstream of the mixing flap 14b and be fixed to a wall of the bypass duct 13d. Such an arrangement of the control module 8 makes it possible to avoid placing it in a location that can be swept by a flow of air heated by the heat exchanger 17 and therefore potentially heated to an inadequate temperature to obtain cooling of the heating module. command 8.

According to a first variant, the control module 8 is installed, at a second location 20b, upstream of the evaporator 16a according to the direction of circulation of the internal air flow

F3. More specifically, the control module 8 is located at the outlet of the mixing chamber 15a.

The control module 8 is thus found between the mixing chamber 15a and the evaporator 16a.

In the example illustrated, the control module 8 is placed upstream of the evaporator 16a and downstream of the particle filter 19c placed in the transfer duct 13c to filter the air leaving the mixing chamber 15a. The control module 8 is, according to this variant, exposed to an internal air flow F3 having a moderate temperature. The control module 8 is, for example, fixed to a wall of the heat treatment chamber 15b.

According to a second variant, the control module 8 is placed, at a third location 20c, in the mixing chamber 15a. The control module 8 is, for example, fixed to a wall of the mixing chamber 15a.

According to a third variant, the control module 8 is placed, at a fourth location 20d in the volute 12a that comprises the motor-fan unit 12. The control module 8 is, for example, fixed to a wall of the volute 12a, on the side of the fan 12a. This third variant has the advantage that the control module 8 is exposed to an internal air flow F3 strongly stirred by the fan 12a of the motor-fan unit 12.

In the case of these three variants 20b, 20c, 20d, the control module 8 is cooled by an internal air flow F3 having a moderate temperature, because it is located upstream from the heat treatment chamber 15b. The control module 8 can also be protected from particles contained in the external air flow F1 and / or in the air flow to be recycled F2 admitted into the ventilation, heating and / or air conditioning installation 3. by through a first particulate filter 19a and / or a second particulate filter 19b respectively placed in the first intake duct 13a and / or in the second intake duct 13b.

Furthermore, the control module 8 can control other electrical members forming part of the ventilation, heating and / or air conditioning installation 3 · For example, the control module 8 can, in addition to regulating the supply electrical of the radiant panels 2, be configured to regulate the electrical supply of the fan 12b of the fan unit 12, and / or of the electrical heating device 17b.

For this, the control module 8 generates control signals to regulate the electrical supply of the radiant panels 2 and of the various electrical components. These control signals can be identical or can have specificities depending on the element that they regulate.

In FIG. 3a, FIG. 3b and FIG. 4. the radiant panels 2 integrate an electrical circuit 22 and include one or more resistors 6a, 6b, 6c supplied by an electric current whose voltage is regulated by the control module 8. In Figures 3a, 3b and 4.

a single radiant panel 2 is illustrated and the methods which follow are understood to be applicable to a plurality of radiant panels 2 fitted to the vehicle 1.

In the example illustrated by FIGS. 3a and 3b, a radiant panel 2 comprises several resistors 6a, 6b, 6c which can be selectively placed in series (FIG. 3a) or in parallel (FIG. 3b) by the control module 8. More specifically, the control module 8 controls an operation of switches, such as switches 21a, 2lb, equipping the electrical circuit 22. The switches 21a, 2lb are each configured in latch to selectively connect at least two resistors 6a, 6b to each other. From a switch control signal for switches 21a, 2lb emitted by the control module 8, the voltage of the electric current supplying one or more resistors 6a, 6b, 6c varies and thus varies the heating temperature of the radiant panel. 2.

In FIGS. 3a and 3b, the radiant panel 2 comprises three electrical resistors 6a, 6b, 6c mounted between two terminals 22a, 22b of the electrical circuit 22 for their electrical supply. The same branch 28 of the electrical circuit 22 connects the two switches 21a, 2lb, the branch 28 being located between a first electrical resistance 6a and a second electrical resistance 6b among the three electrical resistors 6a-6c equipping the radiant panel 2. In the frame in Figure 3a, this branch is traversed by the electric current. A third electrical resistance 6c is mounted between the terminals 22a, 22b of the electrical circuit 22, in parallel with the two other electrical resistors 6a, 6b.

More particularly, a first switch 21a is interposed between a first terminal 22a of a first electrical resistance 6a and a first connection pad 23a. A second connection pad 23b is connected to an electrical potential of an electrical source 27 · A second switch 2lb is interposed between a second terminal 22b of the second electrical resistance 6b and a third connection pad 23c. The branch 28 extends between fourth pads 23d, 23e for connection of the first electrical resistance 6a to the second electrical resistance 6b therebetween.

In diagram 3a, the switches 21a, 2lb are placed under the dependence of a first control order 24a emitted by the control module 8, to connect in series the first electrical resistance 6a and the second electrical resistance 6b. The group of electrical resistors formed by the first electrical resistance 6a and the second electrical resistance 6b is then connected in parallel with the third resistance 6c.

In diagram 3b, the switches 21a, 2lb are placed under the dependence of a second control order 24b issued by the control module 8, to connect each of the three electrical resistors 6a, 6b, 6c in parallel with each other. other.

The electrical circuit 22 illustrated in FIGS. 3a and 3b of the type comprising switches 21a, 2lb is given by way of example. In general, in accordance with such a type of electrical circuit 22 comprising switches 21a, 2lb, the radiant panel 2 may include Ni electrical resistances and N2 switches, Ni and N2 each being greater than one. The number Ni of electrical resistors here is greater than the number N2 of switches.

For example, the radiant panel 2 can be equipped with at least two electrical resistors which can be selectively placed in groups of at least one electrical resistance in series or in parallel via at least one switch. In other words, at least one group of at least one electrical resistance can be selectively placed via one or more switches in series or in parallel with at least one other group of at least one electrical resistance.

In FIG. 4, a radiant panel 2 comprises at least one electrical resistance 6d mounted between two terminals of the electrical source 27, for electrically supplying the electrical resistance (s) 6d. The control module 8 comprises at least one field effect transistor 25 assigned to regulate the voltage of the electric current supplying the electrical resistance 6d.

The field effect transistor 25 is notably placed on the electric circuit 22 in series with the electric resistance 6d, being interposed between one of the terminals 22a, 22b of the electric resistance 6d and one of the terminals of the electric source. 27 · The transistor 25 is preferably an isolated gate field effect transistor of the 1GBT type (from the English “lnsulated-Gate Bipolar Transistor”).

The control module 8 is configured to generate an electrical voltage of the PWM type, according to the acronym of the English expression Puise Width Modulation. Of course, this type of modulation can be applied to the exemplary embodiments of FIGS. 3a and 3b.

Claims (10)

1. Heat treatment assembly (100) for a passenger compartment (4) of a vehicle (l), in particular an automobile, comprising: - a ventilation, heating and / or air conditioning installation (3) intended to send a treated air flow (F4) into the passenger compartment (4), - at least one radiant panel (2), and - a control module (8) configured to control an electrical supply to the radiant panel (s) (2), characterized in that the control module (8) is arranged in the ventilation, heating and / or air conditioning installation (3) so as to be exposed to an internal air flow (F3) circulating inside the ventilation, heating and / or air conditioning installation (3). 2. heat treatment assembly (100) according to claim 1, characterized in that in a direction (Si) of circulation of the internal air flow (F3) through the ventilation, heating and / or air conditioning installation (3), the control module (8) is placed upstream of a heat exchanger (17, 17a, 17b) intended to heat the internal air flow (F3). 3. Heat treatment assembly (100) according to any one of the preceding claims, characterized in that in the direction (Si) of circulation of the internal air flow (F3) through the ventilation, heating and / or air conditioning (3), the control module (8) is arranged upstream of a mixing flap (14b) of the internal air flow (F3), said mixing flap (14b) being placed downstream of '' a heat exchanger (16, 16a) intended to cool the internal air flow (F3) and distributing the air flow (F3) selectively to a heat exchanger (17, 17a, 17b) intended to heat the flow internal air (F3) or to a bypass duct (13d) of the heat exchanger (17, 17a, 17b) intended to heat the internal air flow (F3). 4. Heat treatment assembly (100) according to any one of the preceding claims, characterized in that in a direction (Si) of circulation of the internal air flow (F3) through the ventilation, heating and / or air conditioning (3), the control module (8) is placed downstream of at least one particle filter (l9a-19c) which includes the ventilation, heating and / or air conditioning installation (3) . 5. Heat treatment assembly (100) according to any one of claims 1 to 5. characterized in that, in a direction (Si) of circulation of the internal air flow (F3) through the ventilation installation, heating and / or air conditioning (3), the control module (8) is placed downstream of a heat exchanger (16, 16a) intended to cool the internal air flow (F3). 6. heat treatment assembly (100) according to any one of claims 1 to 5. characterized in that the control module (8) is located in a volute (l2a) of a motor-fan unit (l2) fitted the installation of ventilation, heating and / or air conditioning (3). 7. heat treatment assembly (100) according to any one of the preceding claims, characterized in that the control module (8) is configured to regulate the electrical supply of at least one radiant panel (2) by modulation of pulse width of a control signal or by a linear control signal. 8. heat treatment assembly (100) according to any one of the preceding claims, characterized in that the control module (8) is configured to control at least one switch (21a, 2lb) selectively authorizing the supply or not supply of at least one of the electrical resistors (6a, 6b) equipping at least one radiant panel (2). 9. heat treatment assembly (100) according to any one of the preceding claims, characterized in that said control module (8) is configured to regulate the electrical supply of at least one electrical member (12, 17b) equipping the installation of ventilation, heating and / or air conditioning (3). 10. Heat treatment assembly (100) according to the preceding claim, characterized in that at least one of the electrical members (12, 17b) is a motor-fan unit (12) equipping the ventilation, heating and / or air conditioning (3). 1/3 2/3 CO CM _Q CO L figure 2 3/3 C \ J 21a C \ J co CD figure 3 (a) figure 3 (b) figure 4