EP3615362A1 - Dispositif de chauffage pour un véhicule automobile - Google Patents
Dispositif de chauffage pour un véhicule automobileInfo
- Publication number
- EP3615362A1 EP3615362A1 EP18720341.9A EP18720341A EP3615362A1 EP 3615362 A1 EP3615362 A1 EP 3615362A1 EP 18720341 A EP18720341 A EP 18720341A EP 3615362 A1 EP3615362 A1 EP 3615362A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor vehicle
- heating
- passenger compartment
- radiant
- heating device
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2225—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2226—Electric heaters using radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2227—Electric heaters incorporated in vehicle trim components, e.g. panels or linings
Definitions
- the field of the present invention is that of air-conditioning devices for radiating an air contained inside a passenger compartment of a vehicle, in particular an automobile.
- a vehicle in particular an automobile, is equipped with a heating, ventilation and / or air conditioning system making it possible to modify a temperature of an air contained inside a passenger compartment of the motor vehicle.
- the heating, ventilation and / or air conditioning system comprises a heating, ventilation and / or air conditioning device which is configured to allow a temperature of an air contained inside the air to be modified.
- interior of the motor vehicle from an intake or recirculation of an air flow inside the passenger compartment of the motor vehicle, and following the activation of a command by a user.
- document US2016059669Al is also known which describes such a heating, ventilation and / or air conditioning system comprising a device for heating the passenger compartment by radiation of the air contained inside the passenger compartment of the vehicle. automobile.
- the heating device comprises in particular at least one radiant panel which is equipped with a plurality of electrical resistors dissipating heat by Joule effect when they are traversed by an electric current.
- a general problem in the technical field of the present invention resides in optimal sizing of the heating, ventilation and / or air conditioning system. Indeed, such a heating, ventilation and / or air conditioning system must make it possible to achieve as quickly as possible and as accurately as possible a set temperature for the air contained inside the passenger compartment of the motor vehicle. . A temperature that is too high or too low relative to the desired set point quickly causes discomfort for the user of the motor vehicle.
- An object of the present invention is to improve the thermal comfort inside the passenger compartment of the motor vehicle.
- an object of the invention is to reduce the response time of the heating, ventilation and / or air conditioning system, and in particular of the heating device in order to reach desired setpoint temperatures more quickly.
- Another particular object of the invention is to minimize movements of the air contained inside the passenger compartment in order to improve the comfort of the user, in particular by favoring a static heating of the air contained in the passenger compartment. inside the cockpit.
- Another aim is to reduce an electrical consumption achieved by the heating, ventilation and / or air conditioning system, and in particular by the heating device, in order to reduce the overall consumption of the motor vehicle and to improve its ecological performance.
- another object of the present invention is to reduce heat losses between the air contained inside the passenger compartment and the outside air.
- Another object of the present invention is to reduce the noise generated by the heating, ventilation and / or air conditioning system, and in particular by the heating device during its use.
- At least one of the aforementioned aims is achieved with a heating device comprising at least three radiant panels respectively oriented towards distinct zones of a region that can be occupied by a passenger.
- An overall area of all radiant panels being between 0.3 ⁇ 2 and 0.5 ⁇ 2 per passenger occupying the motor vehicle.
- Each radiant panel is thermally insulated at least in part by a thermal insulator whose thermal resistance is greater than or equal to 0.3 m 2 ° C / W.
- a temperature of a heating surface of each radiant panel ( ⁇ ) being between 30 ° C and 80 ° C.
- each radiant panel is configured to emit electromagnetic radiation for heating at least the air located near said radiant panel - for example the ambient air located in front of said radiant panel And / or a body located opposite said radiant panel.
- each radiant panel emits at least one infrared radiation whose wavelengths are between 750 nanometers and 1000 nanometers (nm).
- each radiant panel may optionally emit, in addition to infrared waves, other electromagnetic waves at different wavelengths.
- at least a portion of the radiant panels emits only infrared-type radiation.
- Each radiant panel comprises resistive elements forming an electrical network embedded in a thermally conductive material.
- thermal energy is dissipated by the Joule effect through the radiant panel, bringing the temperature of its heating surface to a temperature that depends on the intensity of the electrical current flowing through the resistive elements, typically comprised between 30 ° C and 80 ° C according to the invention according to its first aspect.
- the electric current passing through the resistive elements is modulated in order to adapt the power of the infrared radiation emitted by the radiant panel.
- each radiant panel may be any depending on the desired effects and the location in the passenger compartment of the motor vehicle to which they are intended to be integrated.
- the invention according to its first aspect defines an optimal dimensioning of the dimensions of the radiant panels and to obtain an optimal heating device.
- the total area of all radiant panels forming the heating device according to the first aspect of the invention must be between 0.3 m 2 and 0.5 m 2 per passenger occupying the motor vehicle.
- the heating device according to the first aspect of the invention is sized to optimally heat a passenger compartment occupied by a single passenger, then the total area of the radiant panels must be between 0.3 ⁇ 2 and 0.5 m 2 .
- the heating device according to the first aspect of the invention is sized to optimally heat a passenger compartment of a motor vehicle that can be occupied by two passengers, then the total area of the radiant panels must be between 0.6 m 2 and 1 m 2 .
- the total area of the radiant panels forming the heating device according to the first aspect of the invention is between Y ⁇ 0.3 m 2 and Y ⁇ 0.5 m 2 , where Y is a non-zero natural integer representing the number of passengers likely to occupy the passenger compartment of the motor vehicle for which the heater is sized.
- each radiant panel forming the heater according to the first aspect of the invention may vary within this area constraint defined globally for the entire heater. According to particular embodiments which will be described later, areas can be defined specifically for each radiant panel, depending on their destination in the passenger compartment of the motor vehicle.
- the heating device advantageously comprises at least three radiant panels in order to define at least three specific heating zones for a passenger of the passenger compartment of the motor vehicle in which the heating device is intended to be embedded.
- a heating zone may comprise a single radiant panel or a plurality of radiant panels.
- said heater may comprise more than three radiant panels, for example Y x 3 radiant panels, where Y is a non-zero natural number representing the number of passengers likely to occupy the passenger compartment of the motor vehicle for which the heating device is sized. Examples of embodiments will be described later.
- each radiant panel is thermally insulated with respect to a support on which it is mounted in the passenger compartment of the motor vehicle.
- the radiant panel is thermally isolated at least at its rear face, that is to say at its opposite side relative to the heating surface.
- each radiant panel is thermally insulated at its face facing the support on which it is mounted, all or part of said face facing the thermally insulating support.
- the thermal insulation of the radiant panels is provided by one or more insulating layers forming a thermal insulation.
- the thermal insulator for carrying out the thermal insulation by conduction advantageously has a thermal resistance greater than or equal to 0.3 m 2 ° C./W in order to guarantee the thermal efficiency of the heating device according to the first aspect of the invention.
- the heating device thus makes it possible to improve the thermal comfort inside the passenger compartment of the motor vehicle by proposing an optimal dimensioning of the radiant panels which make it possible to minimize the movements of the contained air. inside the passenger compartment and / or reduce the use of convective heating.
- the heating device according to the first aspect of the invention may advantageously comprise at least one of the improvements below, the technical characteristics forming these improvements can be taken alone or in combination:
- the heating device is configured to deliver a maximum heating power which is between 1000 W / m 2 and 1500 W / m 2 .
- the maximum heating power is thus related to the area of radiant panels forming the heating device according to the first aspect of the invention. If the heating device comprises 1 m 2 of radiant panels, then the maximum heating power is between 1 kW and 1.5 kW; and if the heating device comprises 2m 2 of radiant panels, then the maximum heating power is between 2 kW and 3 kW. This power makes it possible to generate the infrared radiation sufficient to warm the passenger compartment of the motor vehicle and / or the passenger (s).
- the heating power of the radiant panels can be configured to be collectively comprised between 0 and 1500 W per square-meter of radiant panels, and preferably between 0 and 1000 W per square meter of radiant panels for panels radiants having a heating surface temperature of between 30 ° C and 60 ° C;
- the heating device comprises a control module making it possible to configure the infrared radiation of each radiant panel, each radiant panel being able to be addressed collectively or selectively by the control module in order to define the temperature and or the heating power of each heating surface in a particular manner.
- At least one of the radiant panels is equipped with a protective member located in front of the heating surface to avoid the risk of burns. More particularly, the protective member is arranged to prevent direct contact - voluntary or involuntary - with the heating surface of the corresponding radiant panel.
- the protection member is arranged to let infrared radiation pass between a first side located on the side of the heating surface and a second side located on the other side of the first side.
- the protective member is located in an intermediate position between the radiant panel and a space of the passenger compartment of the motor vehicle likely to be occupied by a passenger.
- the protection member may take the form of a grid, a mesh of which makes it impossible to insert an organ of one of the passengers of the motor vehicle.
- a protective member is associated with one of the radiant panels of the heating device whose temperature of the heating surface is likely to exceed 60 ° C;
- a heating, ventilation and / or air conditioning system of a passenger compartment of a motor vehicle comprising a heating device according to the first aspect of the invention or according to the any of its improvements and a heating, ventilation and / or air conditioning system configured to deliver a flow of air inside the passenger compartment of the motor vehicle.
- the heating system according to the second aspect of the invention may advantageously comprise at least one of the improvements below, the technical characteristics forming these improvements can be taken alone or in combination:
- the heating device comprises at least a first radiant panel oriented, or intended to be arranged, towards a head zone, at least a second radiant panel oriented, or intended to be arranged, towards a bust zone and at least a third zone; radiant panel oriented, or intended to be arranged, to a foot zone.
- the heating device comprises several groups of radiant panels, the head zone being able to be heated by means of one or more first radiant panels, the bust zone being able to be heated by means of one or more second radiant panels, the foot area can be heated using one or more third radiant panels.
- each group of radiant panels is selectively addressable by the control module of the heating device, a temperature of the heating surfaces of all the radiant panels of each group of radiant panels and / or a power of each group of radiant panels that can selectively configured by said control module.
- the surface temperatures heaters and / or the powers of each radiant panel of the heater may be selectively configured by the control module;
- the at least one first radiant panels assigned to heat treatment of the head zone are carried by first elements comprising at least one wall of a roof of the passenger compartment of the motor vehicle and / or a wall of a pillar of said passenger compartment and / or a wall disposed vis-à-vis a front sunshade fitted to said passenger compartment and / or a wall disposed between the roof and an upper portion of doors said passenger compartment and / or a roof wall overlooking an area between front seats of the passenger compartment of the motor vehicle.
- a first total area of all the first radiant panels assigned to the heat treatment of the head zone is advantageously between 0.05 and 2 2 and 0.1 m 2 per passenger can occupy the passenger compartment of the motor vehicle;
- the at least one second radiant panel assigned to heat treatment of the bust area is carried by second elements comprising at least one wall of a dashboard of the passenger compartment of the motor vehicle and or a wall of one of the front doors of said passenger compartment and / or a wall of a armrest equipping the front door of said passenger compartment.
- a second total area of the set of second radiant panels assigned to the thermal treatment of the bust area is advantageously between 0.15 and 2 0.2 m 2 per passenger can occupy the passenger compartment of the motor vehicle;
- the at least one third radiant panels assigned to a heat treatment of the foot zone are carried by third elements comprising at least one of a front and side wall of a body of the passenger compartment of the motor vehicle and / or a lower wall of one of the front doors of said passenger compartment and / or a front wall of a base of the front seats and / or a wall of the front floor of the passenger compartment of the motor vehicle.
- a third total area of all the third radiant panels assigned to the heat treatment of the foot zone is advantageously between 0.1 m 2 and 0.2 m 2 per passenger can occupy the passenger compartment of the motor vehicle;
- the heating device comprises at least a fourth radiant panel oriented towards a zone of legs which is interposed between the bust zone and the foot zone.
- the fourth group of radiant panels is selectively addressable by the control module; -
- the heating, ventilation and / or air conditioning system advantageously takes the form of a convective heater whose power is less than or equal to 2 1 W
- the heating, ventilation and / or air conditioning system advantageously takes the form of a convective heating whose power is within a range of between 21 W ⁇ 5 kW.
- a motor vehicle equipped with a heating device according to the second aspect of the invention or according to any one of its p erf ecti on n em en ts.
- FIG. 1 is a schematic view of a partial cross-section of a motor vehicle equipped with a heating device of the present invention.
- FIG. 2 is a schematic view of a partial longitudinal section of the motor vehicle illustrated in FIG. 1.
- FIGURE 3 is a front view of a constituent radiant panel of the heater of the present invention.
- FIGURE 4 is a cross-sectional view of the radiant panel shown in FIGURE 3.
- the names “longitudinal”, “transverse”, “vertical”, “lateral”, “left”, “right”, “upper”, “lower”, “front”, “rear” refer to the orientation, in an orthonormal reference Oxyz, a motor vehicle 1 illustrated in the figures.
- an axis Ox represents a longitudinal direction
- an axis Oy represents a transverse direction
- an axis Oz represents a vertical direction of the object in question, in particular the motor vehicle 1.
- the axis Ox extends according to the largest dimension of the motor vehicle 1, which is also the direction in which the motor vehicle moves.
- the axis Oy extends substantially parallel to the ground and commonly between two doors 2 arranged vis-à-vis one another, in other words on one side of the motor vehicle 1 to another side of the motor vehicle 1
- the axis Oz extends substantially parallel to the earth axis of gravity and between a roof 3 and a floor 4 of the motor vehicle 1.
- a longitudinal character of an element implies that this element is extended along the Ox axis.
- a transversal character of an element implies that the element is extended along the Oy axis.
- a vertical character of an element implies that the element is extended along the Oz axis.
- a longitudinal plane is parallel to the Oxz plane
- a transverse plane is parallel to the Oyz plane
- a vertical plane is parallel to an Oxy plane.
- the term “lateral” characterizes an element which is located on one side or the other of a median longitudinal plane of the motor vehicle 1, the median longitudinal plane being a longitudinal plane separating the motor vehicle 1 into two equal portions.
- the denominations "right” or “left” characterize a portion of the motor vehicle 1 located on either side of the median longitudinal plane, a left portion comprising for example a steering wheel 5 of the motor vehicle 1, a straight portion of said motor vehicle 1 in being exempt.
- the denominations "upper” and “lower” characterize a portion of the motor vehicle 1 located on either side of a median transverse plane, the upper part comprising the roof 3 and the lower part comprising the floor 4 ⁇
- the median transverse plane is a transverse plane separating the motor vehicle 1 into two equal portions.
- the denominations "front” and “rear” characterize a portion of the motor vehicle 1 located on either side of a median vertical plane, the front portion comprising the steering wheel 5 and the rear portion being free of steering wheel.
- the median vertical plane is a vertical plane separating the motor vehicle 1 into two equal portions.
- FIGS. 1 and 2 which illustrate a partial view of a passenger compartment 7 of the motor vehicle 1
- said motor vehicle 1 is equipped with a heating, ventilation and / or air-conditioning system 6, hereinafter referred to as the system 6, which makes it possible to modify a temperature of an air contained inside the passenger compartment 7 of the motor vehicle 1.
- the term “indoor air” is used to describe the air contained inside the passenger compartment 7 of the motor vehicle 1 and is called “outside air” an air located around the motor vehicle 1, outwardly relative to the passenger compartment 7 ⁇
- the term “temperature interior” characterizes a temperature of the air contained inside the passenger compartment 7 while an” outside temperature "is equivalent to a temperature of the air located around the motor vehicle 1, outwards relative to the 'cabin 7 ⁇
- the system 6 comprises an installation 8 for heating, ventilation and / or air conditioning, hereinafter referred to as the installation 8, which is configured to modify the internal temperature from an admission or recirculation a flow of air FA inside the passenger compartment 7 of the motor vehicle 1, as shown in FIG. 2.
- the installation 8 makes it possible to configure the temperature of the air flow that is blown at the interior of the passenger compartment 7 ⁇
- the system 6 also includes a heater 9 of the passenger compartment 7 comprising a radiation heating, including indoor air.
- the heating device 9 of the present invention comprises at least three radiant panels 10.
- the heating device 9 comprises three groups of radiant panels 10 or the heating device 9 comprises four groups of radiant panels 10 whose locations go to be described later. Each group of radiant panels comprises at least one radiant panel.
- the heating device 9 comprises more than four radiant panels 10.
- a radiant panel 10 is equipped with a plurality of electrical resistors 11 for delivering Joule heat when traversed by an electric current.
- the electrical resistances 11 form a network which extends over the radiant panel 10.
- the distribution of the electric resistors 11 is such that the thermal power generated by the Joule effect is relatively homogeneous on the surface of the radiant panel 10.
- the network formed by the electrical resistors 11 extends homogeneously over the radiant panel 10.
- the electrical resistance network 11 takes the form of an interlaced comb with a plurality of branches. extends from one edge to the other of the radiant panel 10, the branches being regularly spaced from each other.
- the electrical resistances 11 are for example obtained by screen printing on a conductive substrate 12.
- the radiant panel 10 may be of any shape depending on the desired effects and the parts of the passenger compartment 7 on which it is intended to be mounted.
- the heating device 9 according to the first aspect of the invention defines a total area and / or an area per group of radiant panels, the shape of each radiant panel not being limiting.
- the radiant panel 10 preferably has a rectangular surface, or a square or even circular surface.
- the radiant panel 10 is intended to heat a particular area of the passenger compartment 7.
- each radiant panel 10 is assigned to the heat treatment of a particular zone Z1, Z2, Z3, Z4 of the passenger compartment.
- Z1, Z2, Z3, Z4 is preferably a zone that can receive a user or a body part of the user. In other words, an orthogonal projection of the surface of the radiant panel 10 inside the passenger compartment 7 at least partially meets the user. In other words, at least a portion of the zone Z1, Z2, Z3, Z4 is located opposite at least a portion of the radiant panels 10 of the radiant panel group 10 assigned to the treatment of said zone Z1, Z2, Z3, Z4, a solid angle formed by the zone Z1, Z2, Z3, Z4 and the at least a portion of the radiant panels 10 of the corresponding radiant panel group 10 being non-zero, or even greater than a predetermined value.
- the zones Z1, Z2, Z3, Z4 are many in number and comprise a head zone Z1, a bust zone Z2 and a foot zone Z3.
- the head zone Z1 is an area of the passenger compartment 7 adapted to receive a head of the user, such as for example an upper part of a seat of the passenger compartment 7, such as for example a headrest of said seat.
- the bust zone Z2 is intended to receive a bust of the user, such as for example a central part of a seat of the passenger compartment 7, such as for example a backrest of said seat.
- the foot zone Z3 is provided to receive the feet of the user, such as for example a cellar walk from the passenger compartment 7.
- the head zone Z1 overhangs the bust zone Z2 which overhangs the zone of feet Z3.
- the zones Z1, Z2, Z3, Z4 are four in number and comprise in addition to the three areas mentioned above a leg zone Z4 which is able to receive the legs of the user.
- the leg zone Z4 is interposed vertically between the bust zone Z2 and the foot zone Z3.
- first radiant panels 10 are fixed on first elements 21 which are oriented towards the head zone Z1
- second radiant panels 10 are fixed on second elements 22 which are oriented towards the bust zone Z2
- third radiant panels 10 are fixed on third elements 23 which are oriented towards the foot zone Z3.
- the first elements 21, the second elements 22 and the third elements 23 are for example housed inside the passenger compartment 7 of the motor vehicle 1.
- the first elements 21, the second elements 22 and the third elements 23 define the passenger compartment 7 of the motor vehicle 1.
- the first elements 21 comprise a wall of the roof 3 of the motor vehicle 1.
- the first elements also comprise a wall of a pillar 13 of the motor vehicle 1, the pillar being an amount of the motor vehicle 1 which connects the floor 4 of the motor vehicle 1 at roof 3 of the motor vehicle 1.
- the first elements 21 comprise a wall disposed near a front sun visor 14 fitted to the motor vehicle 1.
- the first elements 21 comprise a wall between the roof 3 and an upper portion of the doors 2, this wall being commonly curved.
- the first elements 21 comprise a roof wall 3 which overhangs an area situated between the front seats 15.
- the first elements make it possible to orient the corresponding radiant panels 10 in order to provide a radiation directed towards the head zone Z1 and / or to an upper part of the bust zone Z2.
- the second elements 22 comprise walls of a dashboard 16 of the automobile vehile 1.
- the dashboard 16 is a transverse element of the automobile vehile 1 located under a windshield 17 of the automobile vehile 1 and above the steering wheel 5 1.
- the edge plank 16 comprises the indicators of the automotive vehile 1 which are necessary for the navigation of the latter, such as meters or the like.
- the second elements 22 comprise walls of the plank of edge 16 which are oriented downwards and which form with a plane parallel to the median transverse plane a first angle CCI between 30 ° and 90 °. In other words, the second elements 22 radiate towards the legs and / or feet of a front passenger, indifferently driver or passenger.
- the second elements 22 also include walls of the edge plank 16 which are oriented towards the bust of a front passenger, indifferently driver or passenger.
- the second elements 22 form with a plane parallel to the transverse plane a second angle CC2 between 30 ° and -30 °.
- the second elements 22 also comprise walls of one of the front doors 2 and / or of an arm rest 18 fitted to these doors 2, the second elements 22 being oriented towards the bust and / or the arms of a front passenger , indifferently driver or passenger.
- the second elements 22 form with a plane parallel to the transverse plane a third angle CC3 between 20 ° and -20 °.
- angles CCI, CC2, CC3 are measured between a direction normal to the surface of the second element 22 considered and the plane parallel to the transverse plane.
- the second elements make it possible to orient the associated radiant panels 10 in order to provide radiation directed towards the bust zone Z2.
- the third elements 23 comprise walls bordering a cellar with feet of the users who occupy one and / or the other of the front seats 15 of the automobile vele 1.
- the cellar with feet is a lower zone of the front part of the motor vebicle 1, especially located in front of the front seats 15, indifferently driver or passenger.
- the cellar with feet is intended to receive the feet of the passengers before the automobile vele 1.
- the third elements 23 comprise a front and side wall of a body 19 of the automobile vehile 1, such as a wall facing A pedals or a support zone of a front passage of the automobile vehile 1.
- the third elements 23 also comprise a lower wall of the front door 2 and / or the right front door 2.
- the third elements 23 also include a wall
- the third elements 23 also comprise a wall of the front floor 4 of the motor vehicle 1.
- the third elements 23 can direct the corresponding radiant panels to provide radiation oriented towards the Z3 feet area.
- the radiant panels 10 are distributed in several groups that are electrically powered independently of each other, each group of radiant panels being assigned to one of the zones ZI-Z4.
- a control module (not shown) advantageously controls the electric current sent to each group of radiant panels 10- all the radiant panels 10 of the same group being supplied with an electric current of the same intensity.
- the control module controls the electric current sent to each radiant panel 10, the radiant panels 10 of the same group can be powered by several electric currents of different intensity.
- part of the groups of radiant panels can be controlled in a linked manner.
- the radiant panels 10 of the first group corresponding to the radiant panels 10 which are fixed on the first elements 21 and which are oriented towards the head zone Z1 can be controlled simultaneously, and with the same instruction, with the radiant panels 10 of the second group which are fixed on the second elements 22 and which are oriented towards the bust zone Z2.
- These provisions are such that a differentiated or identical control of all or part of the groups of radiant panels 10 is possible, for example as a function of climatic conditions, conditions of use of the motor vehicle 1, such as speed, or even according to distinct preferences of comfort specific to each user.
- Each radiant panel 10 has a temperature of a heating surface Ts, in other words an operating temperature, which is between a minimum temperature Tmin and a maximum temperature Tmax.
- the minimum temperature Tmin is of the order of 30 ° C to +/- 10%.
- a temperature of the heating surface Ts corresponding to the minimum temperature Tmin may correspond to a neutralization of the radiative exchanges between the walls of the passenger compartment 7 and the user; and a temperature of the heating surface Ts corresponding to the maximum temperature Tmax makes it possible to warm the passenger compartment 7 and / or to provide a sensation of heating and / or heat for the user, on at least the corresponding part of his body.
- the maximum temperature is of the order of 60 ° C to +/- 10%, or is of the order of 80 ° C to +/- 10%.
- a maximum temperature Tmax of 60 ° C will be favored in areas where contact between the radiant panel 10 and the user is possible, such as, for example, for zones Z1, Z2, Z4 assigned to heat treatment of the head, the bust and respectively legs, to avoid discomfort or risk of body burn, including direct contact with the heating surface of the corresponding radiant panels 10.
- the maximum temperature of the heating surface can be raised to 80 ° C in order to provide a more powerful heating.
- a protection member 40 is advantageously arranged between the user and the corresponding radiant panel 10, as described below with reference to FIG.
- Maximum heating power is less than 1000 W / m 2 for radiant panels 10 whose maximum temperature Tmax is 60 ° C.
- the maximum heating power is of the order of 1500 W / m 2 .
- the heating power is modulated by threshold, for example 25%, 50%, 75% of the maximum power, in particular according to climatic conditions and / or a control of the user.
- the heating power is modulated according to a continuous law. The maximum power depends on the number of passengers that the heater is intended to heat and the area of the associated radiant panels 10: in particular, if the area of the radiant panels is 1 m 2 , then the maximum heating power is included between 1000 W and 1500 W.
- the heating device according to the first aspect of the invention defines a total area of radiant panels 10 between 0.3 ⁇ 2 and 0.5 ⁇ 2 , corresponding to a maximum heating power less than 750 W.
- the heating device according to the first aspect of the invention defines a total area of radiant panels 10 between 0.6 m 2 and 1 m 2 , corresponding to a maximum heating power of less than 1500 W.
- the heating device 9 defines surface areas for each group of radiant panels assigned to heat treatment of one of the zones described above.
- each radiant panel 10 extends over an elementary surface SE, the shape of said radiant panels 10 being arbitrary according to the invention.
- each zone Z1, Z2, Z3, Z4 is heat-treated by a corresponding total area ST1, ST2, ST3, ST4, which corresponds to the sum of the elementary surfaces SE of the radiant panels 10 assigned to the zone Z1, Z2, Z3, Corresponding Z4.
- the Z1 head zone is heat-treated by first radiant panels 10 whose first total area ST1 is between 0.05 m 2 and 0.1 m 2 ; the bust zone Z2 is heat-treated by second radiant panels 10 of which a second total area ST2 is between 0.15 ⁇ 2 and 0.2 m 2 ; and the foot zone Z3 is heat-treated by third radiant panels 10 of which a third total area ST3 is between 0.1 m 2 and 0.2 m 2 .
- an overall area SG per passenger corresponding to a sum of the total areas ST1, ST2, ST3, ST4 per passenger is between 0.2 m 2 and 0.5 ⁇ 2 .
- the total area STI-ST4 of the radiant panels 10 is between Y x 0.2 m 2 and Y x 0.5 ⁇ 2 , where Y is a non-zero natural number representing the number of passengers whose heating device according to the first aspect of the invention can provide heating inside a vehicle passenger compartment 7 automobile.
- each radiant panel 10 is thermally insulated from the elements 21, 22, 23 on which the radiant panel 10 is attached.
- a thermal insulator 20 is interposed between the radiant panel 10 and the elements 21, 22, 23 which carry the radiant panel 10.
- the thermal insulator 20 is of any nature, composed of one or more superimposed layers, but the thermal insulator 20 has a thermal resistance that is greater than or equal to 0.3 m 2 ° C / W.
- Each radiant panel 10 may be equipped with a protection member 40 which is able to avoid contact between a user and the radiant panel 10.
- the protective member 40 is for example a grid or the like provided for distance from the radiant panel 10.
- the protection member 40 is formed on an opposite face of the radiant panel 10 with a face provided with the thermal insulation 20.
- Such a radiant panel 10 equipped with the protective member is particularly intended to equip one of the third elements 23.
- the protection member is particularly useful when the temperature of the heating surface Ts exceeds 60 ° C.
- the heating device 9 which has just been described advantageously completes the installation 8 which delivers the airflow FA inside the passenger compartment 7 ⁇
- Such an installation 8 comprises a housing 30 which houses a blower 31 to circulate the airflow FA in the housing 30 and a heat exchanger 32 adapted to change a temperature of the airflow FA.
- the installation 8 makes it possible to generate a heated air flow which comes in addition to the thermal power generated by the heating device 9 according to the first aspect of the invention.
- the thermal power delivered by the installation is less than 2 1 W, said installation being in addition to the heating device 9.
- Such a heating, ventilation and / or air conditioning system 6 makes it possible to reduce the power consumption. of the motor vehicle 1 on which it is embedded, by improving the energy efficiency of said system 6.
- the thermal power delivered by the installation is less than 5 kW, said installation being complementary to the heating device 9
- the heating device 9 according to the first aspect of the invention allows a rapid temperature rise thanks to the thermal resistors 11 carried by the conductive substrate 12 of the radiant panels.
- the conductive substrate 12 advantageously has a very low thermal inertia because it is deposited in a thin layer on the thermal insulator 20. This results in optimized comfort, in particular from obtaining the desired interior temperature as quickly as possible, after a implementation of the heater for a short time, typically of the order of 10 seconds to 30 seconds before the user installs in the motor vehicle.
- the installation 8 which minimizes the noise associated with the generation of the air flow.
- the control of radiant panels generates no noise.
- the heating device 9 minimizes the heat exchange between the interior air and the walls of the motor vehicle 1 by focusing the radiation on the appropriate areas Z1, Z2, Z3, Z4, with a consequent reduction in consumption. electrical operated by the system 6 for optimized thermal sensation of the user.
- the heating device 9 allows a reduction of the thermal gradients between cold zones and hot zones of the passenger compartment 7, in particular between the interior air and the walls. which also minimizes thermal fluctuations due to air movement between different areas brought to different temperatures.
- the invention relates to a particular dimensioning of a heating device 9 for a motor vehicle 1, which heating device 9 comprising at least three radiant panels 10 respectively oriented towards different zones Z1-Z4 of the body of at least one passenger , an overall area of all the radiant panels 10 being between 0.3 m 2 and 0.5 m 2 per passenger occupying the motor vehicle 1.
- each radiant panel 10 is thermally insulated from the surfaces exterior of the motor vehicle 1 by a thermal insulator whose thermal resistance is greater than or equal to 0.3 m 2 ° C./W.
- a surface temperature of each radiant panel 10 is between 30 ° C and 80 ° C.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1753737A FR3065671B1 (fr) | 2017-04-28 | 2017-04-28 | Dispositif de chauffage pour un vehicule automobile |
PCT/FR2018/050961 WO2018197780A1 (fr) | 2017-04-28 | 2018-04-17 | Dispositif de chauffage pour un véhicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3615362A1 true EP3615362A1 (fr) | 2020-03-04 |
Family
ID=59253742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18720341.9A Withdrawn EP3615362A1 (fr) | 2017-04-28 | 2018-04-17 | Dispositif de chauffage pour un véhicule automobile |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3615362A1 (fr) |
CN (1) | CN211684577U (fr) |
FR (1) | FR3065671B1 (fr) |
WO (1) | WO2018197780A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3098678A1 (fr) * | 2019-07-12 | 2021-01-15 | Valeo Systemes Thermiques | Structure chauffante pour véhicule automobile |
FR3102908A1 (fr) * | 2019-11-06 | 2021-05-07 | Valeo Systemes Thermiques | Structure chauffante pour véhicule automobile |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU3933699A (en) * | 1999-05-03 | 2000-11-17 | Asko Taipale Oy | Method and apparatus for heating the interior of a motor vehicle |
FR2823151B1 (fr) * | 2001-04-04 | 2003-10-31 | Peugeot Citroen Automobiles Sa | Procede de chauffage d'un habitacle de vehicule a moteur et garnissage pour la mise en oeuvre du procede |
JP2005212556A (ja) * | 2004-01-28 | 2005-08-11 | Denso Corp | 車両用輻射暖房装置 |
JP2010052710A (ja) * | 2008-07-29 | 2010-03-11 | Panasonic Corp | 加熱装置およびそれを用いた車両用暖房装置 |
JP2010091185A (ja) * | 2008-10-08 | 2010-04-22 | Panasonic Corp | 加熱装置およびそれを用いた車両用暖房装置 |
US8859938B2 (en) * | 2009-01-26 | 2014-10-14 | Nissan North America, Inc. | Vehicle cabin heating system |
JP5983495B2 (ja) | 2013-03-28 | 2016-08-31 | 株式会社デンソー | 輻射ヒータ装置 |
KR101745277B1 (ko) * | 2016-09-05 | 2017-06-09 | 현대자동차주식회사 | 차량의 히팅패널 |
-
2017
- 2017-04-28 FR FR1753737A patent/FR3065671B1/fr not_active Expired - Fee Related
-
2018
- 2018-04-17 WO PCT/FR2018/050961 patent/WO2018197780A1/fr active Application Filing
- 2018-04-17 EP EP18720341.9A patent/EP3615362A1/fr not_active Withdrawn
- 2018-04-17 CN CN201890000764.2U patent/CN211684577U/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN211684577U (zh) | 2020-10-16 |
FR3065671B1 (fr) | 2020-05-08 |
WO2018197780A1 (fr) | 2018-11-01 |
FR3065671A1 (fr) | 2018-11-02 |
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