• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    Anti-swirling heating device for a tank for storing an aqueous product in a motor vehicle comprising at least one anti-sloshing partition provided with means for secondary heating of said aqueous product, characterized in that said anti-sloshing partition is secured to a heating plate comprising means for primary heating said aqueous product.
    公开号:FR3080733A1
    申请号:FR1856966
    申请日:2018-07-26
    公开日:2019-11-01
    发明作者:Franck Dhaussy；Pierre OSZWALD；Franck Lecrivain；Stephane Leonard；Laurent DUEZ
    申请人:Plastic Omnium Advanced Innovation and Research SA；
    IPC主号:
    专利说明:

    - 1 heating anti-sloshing device for a tank of aqueous products
    The present invention relates, in general, to the technical field of storage tanks for an aqueous product configured to deliver an aqueous product to a device for consuming aqueous products of a vehicle, in particular an automobile.
    A first object of the invention relates to a dual-energy heating device for an aqueous product contained in a tank configured to deliver an aqueous product to a device for consuming aqueous products from a vehicle, in particular an automobile.
    A second object of the invention relates to a heating anti-sloshing device for a tank for storing an aqueous product in a vehicle, in particular a motor vehicle.
    The invention also relates to a storage tank for an aqueous product.
    In a thermal vehicle of the injection engine type, it is known to inject an aqueous product into the air intake circuit of the engine. In this example, the heat engine is a device for consuming an aqueous product. This aqueous product is generally demineralized water which, by mixing with the intake gas, makes it possible to reduce the temperature of the air-fuel mixture at the inlet of the combustion chamber of the injection engine. This results in better compressive strength of petrol engines and better combustion in diesel engines. Water also has a cooling effect on internal engine parts such as pistons and cylinders. This results in a reduction in pollution (unburnt particles, CO, NOx) and a fuel saving of up to 25% in intensive use. Such an injection system is described in patent document FR2801076 A1.
    In a thermal vehicle of the diesel engine type, it is known to inject an aqueous product into the exhaust gases of the engine, upstream of an SCR catalyst, in order to reduce the NOx emissions. In this example, the SCR catalyst is a device for consuming an aqueous product. This aqueous product is generally an aqueous solution of urea, for example AdBlue. Such an injection system is described in patent documents EP381236 A1 and WO9736676 A1.
    In an electric vehicle of the fuel cell type, it is known to produce electricity from an aqueous solution of urea. In the case of an electric vehicle of the hydrogen fuel cell type, urea is used to produce hydrogen by electrolysis of urea in an electrolyser. In this example, the electrolyser is a device for consuming an aqueous product and the aqueous product is urea. Such a fuel cell is described in patent document US2009095636 A1. In the case of a
    - 2 electric vehicles of the ammonia fuel cell type, urea is used to produce ammonia by hydrolysis in a hydrolysis reactor. In this example, the hydrolysis reactor is a device for consuming aqueous product and the aqueous product is urea. Such a fuel cell is described in patent document WO2018055175 A1. In the case of an electric vehicle of the urea fuel cell type, the urea is used to directly generate electricity in the fuel cell. In this example, the fuel cell is a device for consuming an aqueous product where the aqueous product is urea. Such a fuel cell is described in patent document EP2433327 A1.
    It is understood from the preceding examples that, whatever the type of engine used, the vehicle equipped with such an engine must be capable of carrying a certain amount of aqueous product, an amount directly proportional to the range (in kilometers ) sought. To do this, storage tanks for aqueous products are mounted in the vehicles.
    By "aqueous products" is meant products that contain water, which excludes gasoline and diesel and other fuels from the refining of crude oil. The expression “aqueous products” also means water-soluble products such as, for example, alcohol.
    To fill a storage tank with an aqueous product, an aqueous product is used in liquid form, it is in this form that it is generally delivered to an aqueous product consumption device of a vehicle. It is also known that under certain temperature and pressure conditions, the aqueous products freeze. Frozen water or frozen urea in a vehicle storage tank cannot be delivered to a vehicle’s aqueous device. This scenario usually occurs in winter and in cold countries.
    To remedy this problem, there are heating devices for thawing an aqueous product contained in a storage tank. In particular, it is known to thaw an aqueous product contained in a storage tank using a dual-energy heating source where the first heating source comes from a hydraulic heating circuit connected to a vehicle coolant circuit. and where the second heating source comes from an electric heating circuit connected to a source of electric energy of the vehicle. Such a heating device is described in patent document WO2018050895 A1.
    Known dual-energy heating devices have the disadvantage of being bulky and difficult to position optimally. Each of the two heating circuits occupies its own volume in the storage tank, which requires
    -3to know how to position them correctly with respect to each other to avoid any negative interaction, in addition to knowing how to position them correctly in the tank to optimize the heat exchange between the bi-heating device -energy and the aqueous product. This is not satisfactory. In addition, the hydraulic heating circuit, like the electric heating circuit, is often a spiral or serpentine tube which offers only a limited surface for heat exchange with the aqueous product. In addition, known dual-energy heating devices do not allow the energy supplied by the hydraulic heating circuit to be freely combined with the energy supplied by the electric heating circuit.
    Another problem exists with the aqueous product tanks for motor vehicles. When the aqueous product is not completely frozen, the speed or orientation changes of the vehicle cause movements of the liquid mass in the tank and therefore shocks of this mass against the walls of the tank generating undesirable noises, also called "Slosh noise" in English.
    To remedy this problem, there are anti-sloshing devices, also called “anti-slosh baffle” in English. Anti-sloshing devices are designed to absorb the noise associated with the waves generated within the tank when the vehicle accelerates suddenly, brakes and takes turns. Such a device is described in patent document FR3038000 A1. In this document, the anti-sloshing device comprises an anti-sloshing partition which permanently integrates a resistive track in stainless steel. This resistive track is connected to an electrical power point which makes the anti-sloshing device warm.
    However, the heating anti-sloshing device disclosed in patent document FR3038000 A1 has the drawback of only heating the aqueous product around the anti-sloshing partition, which is not sufficient to quickly thaw an aqueous product, such as water or urea, contained in a storage tank of a vehicle. Indeed, by -15 degrees Celsius, a heat engine reaches its normal operating temperature five minutes after starting, so the driver of a vehicle with a heat engine expects to have the full power of his vehicle five minutes after starting. However, as long as the aqueous product consumption devices of the thermal engine vehicle are not properly supplied, the power of the vehicle is restrained to protect the engine and limit polluting emissions. This scenario occurs when the contents of a tank configured to deliver an aqueous product, such as water or urea, to a device for consuming the latter is still frozen.
    An object of the invention is in particular to overcome the aforementioned drawbacks.
    In view of the problem of freezing the aqueous product, the first object of the invention is a dual-energy heating device configured to heat an aqueous product contained in a storage tank for an aqueous product, the storage tank being configured for delivering an aqueous product to a device for consuming aqueous products from a motor vehicle, the motor vehicle being of the type comprising at least one coolant circuit and at least one source of electrical energy, the device comprises a heating plate of the aqueous product configured to be selectively heated either by a first heating means, or by a second heating means distinct and independent from the first heating means, or by both the first and second heating means.
    Thanks to the first object of the invention, the difficulties of mutual positioning of the hydraulic heating circuit and the electric heating circuit are resolved, and the space and the manufacturing cost of the dual-energy heating device are considerably reduced by grouping all the heating circuits in a single component: the heating plate. Another advantage of the heating plate according to the first object of the invention is that it offers a greater heat exchange surface with the aqueous product thanks to the fact that the heating plate is a plate and not a tube. The expression “plate” is intended to denote an element whose thickness is negligible compared to the other dimensions (length, width).
    Finally, thanks to the first object of the invention, there is greater freedom to combine the energy supplied by the hydraulic heating circuit and the energy supplied by the electric heating circuit of the vehicle.
    According to additional features of the first object of the invention:
    - the first heating means is a hydraulic heating circuit configured to be connected in leaktight manner to a coolant circuit of the vehicle and the second heating means is an electric heating circuit configured to be connected to an energy source vehicle. Thus, the heating plate is heated thanks to energy sources already available in the vehicle.
    - the hydraulic heating circuit and the electric heating circuit meander on the heating plate. In this way, the heating of the hot plate is faster and more homogeneous.
    - the hydraulic heating circuit and the electric heating circuit are interlaced. In this way, the route of the hydraulic heating circuit is the same as the route of the electric heating circuit. Thanks to this feature, the heating of the heating plate is faster and more homogeneous.
    - the heating plate is formed by the assembly of a first metal sheet
    -5and a second metal sheet and the first and second heating means are sandwiched between the first metal sheet and the second metal sheet. Thus, the first and second heating means are integrated into a single component: the heating plate. This is particularly advantageous for reducing the size of the dual-energy heating device according to the first object of the invention.
    - At least one of the first and second metal sheets is stamped to form a first conduit and the hydraulic heating circuit comprises the first conduit. This allows a hydraulic heating circuit to be produced at a lower cost.
    - At least one of the first and second metal sheets is stamped to form a second conduit configured to house the second heating means. This allows a conduit to accommodate the second heating means at a lower cost.
    the heating plate comprises a hydraulic transfer circuit configured to transfer the aqueous product contained in a storage tank of an aqueous product to an aqueous product supply module of an aqueous product consumption device of a motor vehicle . In this way, the heating plate incorporates an additional function which makes it possible to ensure proper operation of the tank, more particularly, proper operation of the means of the tank configured to deliver an aqueous product to a device for consuming aqueous products from a vehicle. .
    - The hydraulic transfer circuit comprises a third conduit and at least one suction point configured to suck up an aqueous product contained in a storage tank for an aqueous product. This allows a hydraulic transfer circuit to be produced at a lower cost.
    - the hydraulic transfer circuit includes a hydraulic connector configured to connect the suction point (s) to a suction pump. In this way, the heating plate incorporates an additional element of the hydraulic transfer circuit.
    According to other additional characteristics of the first object of the invention:
    - The first heating means is a heating circuit connected to a fatal heat recovery circuit of the vehicle. By the term "waste heat" is meant the unused unused heat from the vehicle. This makes it possible to heat the heating plate with, for example, the fatal heat of the engine and / or the fatal heat of braking and / or the fatal heat of the exhaust gases.
    - the first conduit is separated from the second conduit. This prevents the first and second heating means from heating each other.
    - the heating plate is made of metal, for example, steel, stainless steel or aluminum. This allows for a better heat exchange between the plate
    -6heating and the aqueous product.
    - the heating plate is coated with a biocide, for example a metal having antimicrobial properties such as zinc, silver, copper or nickel. This avoids bio contamination of the aqueous product contained in the storage tank.
    - The heating plate is coated with an anticorrosive coating such as a zinc-based coating. This protects the heating plate from corrosion.
    - The first conduit is sealed against the aqueous product contained in the tank. This is to prevent coolant from mixing with the aqueous product and vice versa.
    - the first metal sheet is assembled with sealing to the second metal sheet on either side of the first conduit, along the latter. This prevents coolant from leaking out of the hot plate.
    - The sealing assembly of the first metal sheet to the second metal sheet is carried out by laser welding by transparency or by brazing or by TIG welding of the first metal sheet on the second metal sheet. In this way, a tight assembly is obtained in the desired location.
    - The sealing assembly of the first metal sheet to the second metal sheet is carried out by gluing or gluing or laminating the first metal sheet to the second metal sheet. In this way, the sealing of the sealing assembly is improved.
    - At least one of the two metal sheets is stamped to form the third conduit for the hydraulic transfer circuit. This allows a hydraulic transfer circuit to be produced at a lower cost.
    - the heating plate is formed by the assembly of three metal sheets: a first, a second and a third sheet. The first heating means is sandwiched between the first and second sheets while the second heating means is sandwiched between the second and third sheets.
    According to the invention, there is also provided a storage tank for an aqueous product configured to deliver an aqueous product to a device for consuming aqueous products of a motor vehicle, the storage tank comprises a dual-energy heating device according to the first object of the invention and means for fixing the heating plate to the storage tank. In this way, a particularly innovative heating tank is obtained.
    According to an additional characteristic of the invention, the storage tank comprises a decontamination device by ultraviolet radiation configured to decontaminate the aqueous product contained in the storage tank by irradiating the
    -7 aqueous product with ultraviolet rays. This avoids bio contamination of the aqueous product contained in the storage tank.
    In view of the “slosh noise” problem, the second object of the invention is a heating anti-sloshing device for a tank for storing an aqueous product in a motor vehicle comprising at least one anti-sloshing partition provided with heating means. secondary of the aqueous product, the anti-sloshing partition is integral with a heating plate comprising means for primary heating of the aqueous product.
    Thanks to the second object of the invention, there is an increased heating power in the aqueous product tank which allows the aqueous product contained in the tank to be thawed more quickly so as to have all the power of the vehicle as soon as the engine has reached its normal operating temperature, i.e. a temperature around 90 degrees Celsius. By the expression "thaw more quickly", it is meant that the thawed amount of aqueous product contained in a storage tank is greater than the need for the aqueous product consumption devices of the vehicle. For example, at -15 degrees Celsius, the quantity thawed is greater than the need for the aqueous product consumption devices of the vehicle after five minutes after starting the engine of the vehicle.
    According to additional features of the second object of the invention:
    - The anti-sloshing partition is fixed to said heating plate, for example by welding, riveting or screwing. This allows the anti-slippage partition to be produced separately from the heating plate and to be joined thereto later.
    - the anti-sloshing partition comes from the heating plate. This allows the anti-slip partition to be produced at the same time as the heating plate, from the same component.
    - the anti-sloshing partition is perpendicular to the heating plate. This allows the aqueous product to be heated elsewhere than around the heating plate, for example, around the supply module.
    - The secondary and / or primary heating means comprise an electric heating circuit and / or a hydraulic heating circuit. In this way, different energy sources can be combined both in the secondary heating means and in the primary heating means.
    - the secondary heating means are common to the primary heating means. This makes it possible to use the same energy source (s) to heat the hot plate and / or the anti-slippage partition.
    - the secondary heating means share with the primary heating means the same electric and / or hydraulic heating circuit. This allows the same heating circuit (s) to be used to heat the heating plate and the anti-slip partition at the same time.
    - The anti-sloshing partition and / or the heating plate comprises at least partly metallic elements such as, for example, stainless steel and / or aluminum elements. This allows for better heat exchange between the anti-slip partition and the aqueous product, on the one hand, and between the heating plate and the aqueous product, on the other hand.
    According to the invention, there is also provided a storage tank for an aqueous product comprising an interior volume, a bottom wall, flow stream lines for the aqueous product and at least one heating anti-sloshing device according to the second object. of the invention in which the anti-slip partition extends in the interior volume of the tank perpendicular to the bottom wall of the tank, on the one hand, and to the flow current lines in the tank, on the other hand , and where the heating plate extends parallel to the bottom wall of the tank.
    According to an additional characteristic of the tank which is the subject of the invention, the tank comprises a supply module located between two anti-sloshing partitions. This allows the power module to thaw more quickly.
    We will now describe a non-limiting example of embodiment and implementation of the invention using the following figures:
    - Figure 1 is a perspective view of the upper face of a dual-energy heating device according to the first object of the invention.
    - Figure 2 is a perspective sectional view of a storage tank for an aqueous product comprising a dual-energy heating device according to the first object of the invention.
    - Figure 3 is a sectional view of a storage tank for an aqueous product comprising a dual-energy heating device according to the first object of the invention.
    - Figure 4 is a perspective view of the underside of a dual-energy heating device according to the first object of the invention.
    - Figure 5 is a perspective sectional view of a portion of the underside of a dual-energy heating device according to the first object of the invention.
    - Figure 6 is a perspective sectional view of part of a suction point.
    - Figure 7 is a perspective sectional view of part of a hydraulic connection.
    - Figure 8 is a perspective view of the upper face of an anti device
    -9 heating sloshing according to a first embodiment of the second object of the invention.
    - Figure 9 is a perspective view of the upper face of a heated anti-sloshing device according to a second embodiment of the second object of the invention.
    - Figure 10 is a sectional view of a storage tank for an aqueous product comprising a heating anti-sloshing device according to the first embodiment of the second object of the invention.
    - Figure 11 is a perspective view of the upper face of a heating anti-sloshing device according to a third embodiment of the second object of the invention.
    - Figure 12 is a perspective view of the upper face of a heating anti-sloshing device according to a fourth embodiment of the second object of the invention.
    - Figure 13 is a perspective sectional view of a storage tank for an aqueous product showing a heating anti-sloshing device according to the second object of the invention.
    In all the figures, identical elements have the same reference numbers.
    A dual-energy heating device 1 as illustrated in FIG. 1 comprises a heating plate 10 having the general shape of a rectangle with two long sides 100, 101, two short sides 102, 103, four angles 105, 106, 107, 108 connecting the four sides, an upper face 10a and a lower face 10b such that the distance between the upper face 10a and the lower face 10b is between 5 mm and 15 mm, this distance is the thickness of the heating plate 10. The expressions “upper side” and “lower side” are intended to denote the side facing upwards, respectively downwards, of the storage tank for an aqueous product when the dual-energy heating device is installed in the bottom of said tank (see Figure 2). In the example illustrated, the heating plate 10 has in its middle a circular opening 4 for letting through a module 5 for supplying aqueous product (see FIG. 2). In addition, the angles 105, 106, 107, 108 of the heating plate 10 are arranged so as to reach the angles of the bottom of the tank 2, in the example illustrated, the angles 105, 106, 107, 108 of the heating plate 10 are supported on the bottom of the tank 2, in the four corners of the bottom of the tank 2. Preferably, the heating plate 10 is made of metal. Indeed, when the heating plate 10 is installed in a urea storage tank, it is preferable that the heating plate is made of stainless steel to better resist corrosion, while
    - 10when the heating plate 10 is installed in a water storage tank, the heating plate can advantageously be made of aluminum because aluminum conducts heat better than steel.
    According to a characteristic of the first object of the invention, the heating plate 10 is selectively heated, either by a first heating means 11, or by a second heating means 12 distinct and independent of the first heating means 11, or at the same time by the first 11 and second 12 heating means, this allows a wide variety of heating operating modes. According to a particular embodiment of the first object of the invention, the first heating means 11 is a hydraulic heating circuit 11 and the second heating means 12 is an electric heating circuit 12. In a preferred embodiment of the first object of the invention, the hydraulic heating circuit 11 is a conduit 11 'which winds on the heating plate 10. In a particular embodiment, the conduit 11' projects in the thickness of the heating plate 10, from of the upper face 10a. In operation, the duct 11 ′ is traversed by a heat transfer liquid such as engine coolant, from an inlet 11 a of liquid towards an outlet 11 b of liquid (see FIG. 4). Glycol is an example of a coolant used as an engine coolant. Advantageously, the electric heating circuit 12 is an electric heating tube, also called an electric tubular heater or a heating resistor, for example of 500 W (not shown) which winds on the heating plate 10. In a preferred embodiment of the first object of the invention, the electric heating tube is housed in a duct 12 'of the heating plate 10. In a particular embodiment, the duct 12' projects in the thickness of the heating plate 10, from the upper face 10a. In operation, an electrical energy source such as an electric battery, supplies the electric heating tube via electrical plugs 12a, 12b (see Figure 4).
    It is a unit (not represented) of electronic control ECU (“Electronic Control Unit” in English language) of the vehicle which controls, according to the conditions of outside / inside temperature of the vehicle, engine speed, behavior of the driver, vehicle inclination and other parameters, selective heating of the heating plate 10. Thus, in some cases, the heating plate 10 will only be heated by the hydraulic heating circuit 11, in other cases, the plate heating plate 10 will only be heated by the electric heating circuit 12 and in still other cases, the heating plate 10 will be heated both by the hydraulic heating circuit 11 and by the electric heating circuit 12.
    The hydraulic 11 and electric 12 heating circuits are an integral part of
    - 11 the heating plate 10. By “are integral parts”, it is meant that the hydraulic 11 and electric heating circuits 12 extend essentially in the thickness of the heating plate 10. The heating plate 10 is a conduction plate thermal heated by contact with one and / or the other of the two hydraulic 11 and electric heating circuits 12. Advantageously, the hydraulic heating circuit 11 and the electric heating circuit 12 are interlaced. By "are interlaced", it is meant that the hydraulic 11 and electric 12 heating circuits wind together on the heating plate 10 while remaining parallel to each other.
    In practice, in cold weather, when the heating plate 10 has to thaw an aqueous product such as for example water or urea contained in a storage tank of a vehicle with an internal combustion engine, the hydraulic heating circuit 11 is supplied with coolant from the engine cooling circuit (not shown). In fact, after starting the engine, the coolant begins to heat in the engine cooling circuit, coolant thus heated is sent to the hydraulic heating circuit 11. As soon as hot coolant runs through the duct 11 ′, it exchanges heat with the heating plate 10. This heat exchange has the effect of heating the heating plate 10 by thermal conduction. As soon as the heating plate 10 is hot enough, the aqueous product in contact with the heating plate 10 begins to thaw and liquefy.
    The operating mode described in the previous paragraph also applies in the case of an electric vehicle of the fuel cell type. The difference is that the hydraulic heating circuit 11 is supplied with coolant from a fuel cell cooling circuit (not shown).
    It will be understood that the hotter the heating plate 10, that is to say the higher its temperature, the faster the frozen aqueous product liquefies, hence the advantage of having a second heating means 12 of the heating plate 10, separate and independent of the first heating means 11. In practice, when the heating plate 10 has to thaw an aqueous product such as for example water or urea contained in a storage tank of a vehicle with a thermal engine or a fuel cell, the electric heating circuit 12 is supplied by a source of electric energy from the vehicle (not shown). As soon as the electric heating tube begins to heat, it exchanges heat with the heating plate 10. This heat exchange has the effect of heating the heating plate 10 by thermal conduction. Thus, by combining two different heating means 11 and 12 of the heating plate 10, a heating plate 10 is obtained which is more effective in thawing a frozen aqueous product. A known parameter to quantify
    - 12the heat exchange between two surfaces is the heat transfer coefficient expressed in watts per square meter-Kelvin (W-m-2-K-1).
    In Figure 1, there is also illustrated a third circuit 13 which, like the first 11 and second 12 heating circuits, is an integral part of the heating plate 10 but which, unlike the above circuits, is not not a heating circuit. Indeed, the circuit 13 is a hydraulic transfer circuit, its role is to transfer the aqueous product contained in the storage tank 2 to the module 5 for supplying the aqueous product (see FIG. 2). More specifically, the role of the hydraulic transfer circuit 13 is to ensure that, whatever the driving position of the motor vehicle, the module 5 always has access to the aqueous product contained in the storage tank 2. The module 5, meanwhile, serves to deliver aqueous product to the vehicle's aqueous product consumption device. When, for example, the motor vehicle takes a sharp turn and the storage tank 2 is almost empty, the little aqueous product available will accumulate on one side or the other of the tank 2. If, in the at the same time, the device for consuming the aqueous products of the vehicle requires aqueous product, it is possible that it does not receive any for the reason that the suction pump 3 of the supply module 5 cannot access the product aqueous accumulated on one side or the other of the tank 2. The hydraulic transfer circuit 13 is there to avoid this situation. In practice, the hydraulic transfer circuit 13 comprises a conduit 13 'connecting four suction points 13a, 13b, 13c, 13d to each other, each point 13a, 13b, 13c, 13d being placed at an angle 105, 106, 107 and 108 respectively, of the heating plate 10. The hydraulic transfer circuit 13 further comprises a hydraulic connection 14, this connection 14 is used to connect the suction points 13a, 13b, 13c, 13d to the suction pump 3 via the conduit 13 '(see Figure 2). Thus, when the aqueous product accumulates on one side or the other of the reservoir 2, there is always at least one suction point 13a, 13b, 13c, 13d immersed in the aqueous product due to the particular arrangement of the angles 105, 106, 107 and 108 in the storage tank 2. By this arrangement, the suction pump 3 of the module 5 always finds aqueous product to be pumped in the storage tank 2, regardless of the driving position of the motor vehicle.
    Advantageously, like the ducts 11 'and 12', the duct 13 'projects in the thickness of the heating plate 10, from the upper face 10a.
    FIG. 2 illustrates a heating plate 10 installed in the bottom of a storage tank 2 for an aqueous product (not shown). In the example illustrated, the tank 2 is made from two half-shells obtained by molding a plastic material: an upper half-shell 2a and a lower half-shell 2b. The two half
    - 13coquiIles 2a, 2b are thermally welded to each other along a joint plane P to form a closed storage tank. The heating plate 10 is introduced and fixed in the bottom of the tank before it is closed by heat welding. The fixing of the heating plate 10 is ensured by fixings 20 (only one fixing is visible in FIG. 2). In the example illustrated, the fixing 20 is obtained by the passage of a rod 21 through an opening made in the thickness of the heating plate 10, the rod 21 is a plastic rod resulting from the molding of the half-shell bottom of the tank 2 and projects towards the inside of the tank 2. A push washer 22 mounted on the free end of the rod 21 serves as a stop for the heating plate 10. A module 5 for supplying aqueous product is also shown. In the case where the tank 2 is a water tank, the module 5 is also called WDM for "Water Delivery Module" in English. A WDM is a set of components arranged to supply pressurized water to an injection engine. Among the components of the WDM module, there is a water pump such as the suction pump 3 and an injection pipe (not shown) for injecting pressurized water into the vehicle engine. We can also find a temperature sensor (not shown), to measure the water temperature and a quality sensor (not shown) to measure one or more physicochemical properties of water. Advantageously, a WDM module also includes a stabilizing pot 6, also called a "swirl pot" in English, intended to permanently store a volume of water useful for the proper functioning of the water pump.
    A filling tube 7 is provided in the upper half-shell 2a to fill the tank 2 with an aqueous product. The coolant such as glycol (not shown) is brought into the hydraulic heating circuit 11 via a hydraulic connector 11c of the quick coupling type. The electrical connection of the electrical heating circuit 12 to a source of electrical energy of the vehicle such as an electric battery is done by means of an electrical connector 12c plugged into the electrical plugs 12a, 12b.
    FIG. 3 illustrates a storage tank 2 for an aqueous product comprising a dual-energy heating device 10. Advantageously, the angles 105, 106, 107, 108 of the heating plate 10 are arranged so as to reach the corners of the bottom of the tank
    2. In addition, the angles 105, 106, 107, 108 of the heating plate 10 are supported on the bottom of the tank 2, this allows the suction points 13a, 13b, 13c, 13d to be placed at the bottom of the tank in order to always have access to the aqueous product even when it is in small quantity. To improve the heat exchange between the heating plate 10 and the aqueous product contained in the tank 2, the aqueous product is also present under the heating plate 10, that is to say between the underside 10b and the bottom of the tank
    - 142, this increases the heat exchange between the heating plate 10 and the aqueous product. The distance between the lower face 10b and the bottom of the tank is 10 to 20 mm.
    FIG. 4 illustrates the heating plate 10 viewed from the underside side 10b. In this view, the hydraulic 11 and electric 12 heating circuits as well as the hydraulic transfer circuit 13 are not visible. Indeed, the ducts 11 ’, 12’ and 13 ’do not protrude from the lower face 10b. What protrudes from the underside 10b are metal tubes 11a, 11b and electrical plugs 12a, 12b.
    The hydraulic connector 11c is connected to the metal tubes 11a, 11b (see FIG. 2) to connect the hydraulic heating circuit 11 to the cooling circuit of the motor vehicle. Preferably, the metal tubes 11a, 11b are welded to the underside 10b of the heating plate 10, one at the inlet and the other at the outlet of the hydraulic heating circuit 11. The electrical plugs 12a, 12b are planted at their base in an insulating material which also serves as a support for the plugs 12a, 12b in the heating plate 10. Openings 10c, 10d are made in the thickness of the heating plate 10 for the fasteners 20 (see FIG. 2).
    FIG. 5 illustrates a heating plate 10 formed from two metal sheets 8, 9. Preferably, the sheet 8, 9 is a sheet of stainless steel 0.5 to 0.6 mm thick. The first metal sheet 8 contains the upper face 10a of the heating plate 10 and the second metal sheet 9 contains the lower face 10b of the heating plate 10. Advantageously, the hydraulic heating circuit 11 and the electric heating circuit 12 are taken into account. sandwich between the first metal sheet 8 and the second metal sheet 9. In a preferred embodiment, the first metal sheet 8 is stamped to form a first conduit 11 '. The hydraulic heating circuit 11 includes the first duct 11 ’. Advantageously, the first metal sheet 8 is also stamped to form a second conduit 12 ’. The electric heating circuit 12 is housed in the second duct 12 ’. Thanks to this arrangement, the manufacturing cost of the two circuits 11 and 12 is reduced. Advantageously, the first metal sheet 8 is also stamped to form a third conduit 13 ’. The hydraulic transfer circuit 13 includes the third conduit 13 ’. Thanks to this arrangement, the manufacturing cost of the three circuits 11, 12 and 13 is reduced. In addition, the hydraulic transfer circuit 13 is also heated by the heating plate 10 which makes it possible, if necessary, to thaw the product. water contained in the hydraulic transfer circuit 13.
    Figure 6 illustrates some details of a suction point 13a, 13b, 13c, 13d. Among these details, there is a valve 17 comprising a suction port 15 and a tongue
    16. The tongue 16 is mounted in cantilever at the edge of the angle 106, 108 of the heating plate 10. The free end of the tongue 16 extends above the orifice
    - 15 of suction 15. The tab 16 is made of a foam of fluoropolymer type whose density is less than 1, thus, when the suction point 13a, 13b, 13c, 13d is immersed in the aqueous product of the reservoir of storage 2, the tab 16 floats in the aqueous product. The floating of the tongue 16 allows the opening 15 to be uncovered, thus, when the suction pump 3 is activated, the aqueous product is pumped through the opening
    15. It is said here that the valve 17 is open when the suction point is submerged.
    When the suction point 13a, 13b, 13c, 13d is not immersed in the aqueous product of the storage tank 2 and the suction pump 3 is activated, the tongue 16 is sucked by a slight depression created in the hydraulic transfer circuit 13, by this arrangement, the tongue 16 sealingly orifices the orifice 15. It is said here that the valve 17 is closed when the suction point is in the air.
    FIG. 7 illustrates some details of a hydraulic connector 14. The hydraulic connector 14, also called a “pipette”, is mounted on a ball joint to, on the one hand, recover the angular positioning defects between the heating plate 10 and the WDM module and, on the other hand, facilitate the assembly of the pipette.
    FIG. 8 represents a heating anti-sloshing device 30 comprising a heating plate 10 'which resembles the heating plate 10 but where the opening 4' in the middle of the heating plate 10 'is not circular but rectangular and where the circuit electric heating is absent. The rectangular opening 4 ’has two opposite raised edges 41,42 from the heating plate 10’, that is to say made in one piece with the heating plate 10 ’. Indeed, the first raised edge 41 is a rectangle cut from the heating plate 10 'on three sides 41 a, 41 b, 41 c and folded at right angles to the fourth side 41 d such that the first raised edge 41 rises above the upper face 10 ′ a, vertical to the heating plate 10 ′, being perpendicular to the flow current lines F of the aqueous product in the tank 2 (see FIG. 10). Similarly, the second raised edge 42 is a rectangle cut from the heating plate 10 'on three sides 42a, 42b, 42c and folded at right angles to the fourth side 42d such that the second raised edge 42 rises above the upper face 10'a, vertical to the heating plate 10 ', facing the first raised edge 41, on the other side of the opening 4'. Thanks to this arrangement, the raised edges 41, 42 form anti-sloshing partitions.
    The heating plate 10 'comprises means for primary heating of the aqueous product contained in the tank 2 (see FIG. 10), for example a hydraulic heating circuit 11. The hydraulic heating circuit 11 comprises a duct 11 ”which winds on the plate heater 10 ', on the one hand, and on the raised edges 41, 42, on the other hand, thus, each raised edge 41, 42 is traversed by the same hydraulic heating circuit 11 as the heating plate 10'. Thanks to this arrangement, the raised edges
    - 1641.42 form anti-sloshing partitions provided with means for secondary heating of the aqueous product contained in the tank 2.
    The expression "primary heating means" is intended to denote heating means designed to more quickly thaw an aqueous product contained in the tank. The expression "secondary heating means" is intended to denote heating means arranged to assist the primary heating means.
    FIG. 9 illustrates an alternative embodiment of a heated anti-sloshing device 30. In this embodiment, a first 43, respectively a second 44, anti-sloshing partition comprises three rectangles of sheet metal. The anti-sloshing partitions 43, 44 are opposite to each other in that they are separated from each other by the opening 4. Each sheet rectangle of the first anti-slipping partition 43, respectively of the second anti-sloshing partition 44 is provided with welding tabs 43 ', respectively 44', on one side 43a, respectively 44a, of a rectangle. The welding tabs 43 ’, respectively 44’, are folded on either side of the surface of each rectangle with a folding angle alternating between 90 ° and -90 °. The welding tabs 43 ’, respectively 44’, are welded to the upper face 10 "a of the heating plate 10" in order to secure the anti-slippage partitions 43,44 to the heating plate 10 ". Preferably, the upper face 10 "a of the heating plate 10" and the metal sheet rectangles of the anti-slippage partitions 43, 44 are pieces of stainless steel. In this alternative embodiment of the second object of the invention, the hot plate 10 ”comprises primary heating means, for example a hydraulic or electric heating circuit which does not extend over the anti-slippage partitions 43, 44. Here, the secondary heating means of the anti-balloon partitions 43, 44 are produced by the rectangles of metal sheet which, by being welded to the hot plate 10 ", receive by thermal conduction the heat coming from the hot plate 10" and the transfer to the aqueous product . Thanks to this arrangement, the anti-sloshing partitions 43, 44 act as radiator fins where the radiator is the 10 ”hot plate.
    As an alternative to welding, the legs 43 ’, 44’ can be riveted or screwed to the hot plate 10 ”.
    Figure 10 shows the heating anti-sloshing device 30 of Figure 8 installed in the bottom of a storage tank 2 of an aqueous product. The arrow F illustrates the flow stream lines of the aqueous product.
    FIG. 11 illustrates an alternative embodiment of a heated anti-sloshing device 30. In this embodiment, a first anti-sloshing partition 45 is produced from a tube which winds in a plane perpendicular to the upper face.
    - 1710’s has a 10 ’hot plate. The tube 45 has an inlet 45a and an outlet 45b for a heat transfer fluid. In the example illustrated, the inlet 45a is assembled in leaktightness upstream of a duct 11 "of the hydraulic heating circuit 11 and the outlet 45b is assembled in leaktightness downstream of the duct 11". Thus, when hot coolant circulates in the duct 11 ”, part of this liquid is deflected in the tube 45 thus forming an anti-sloshing partition provided with secondary heating means. By the expression "hot coolant", we mean that the coolant is hotter than the aqueous product in the tank.
    Advantageously, a second non-slip partition 46, identical to the first non-slip partition 45, is mounted opposite the latter, that is to say on the other side of the opening 4. The non-slip partitions sloshing 45, 46 are arranged perpendicular to the flow stream lines F of the aqueous product in the tank 2 (see FIG. 10). Even more advantageously, a metal plate 45c, respectively 46c, is welded to the tube 45, respectively 46. The plate 45c, 46c is stamped to form strips 104 whose shape is similar to the shutters of the shutters. Thanks to this arrangement, the turbulence of the liquid which circulates through the anti-sloshing partitions 45, 46 is increased.
    FIG. 12 illustrates an alternative embodiment of a heated anti-sloshing device 30. In this embodiment, a first anti-sloshing partition 47 is produced from an electric heating resistor which winds in a plane perpendicular to the upper face 10'a of the heating plate 10 '. The electric heating resistor 47 is supplied with electric current by two electric terminals 47a, 47b. In the example illustrated, the resistor 47 is mounted as a bypass on an electric heating circuit 12 "(not shown) which winds on the heating plate 10". With this arrangement, the anti-sloshing partition 47 is provided with secondary heating means. Advantageously, a second anti-sloshing partition 48, identical to the first anti-sloshing partition 47, is mounted opposite the latter, that is to say on the other side of the opening 4. The partitions anti-sloshing 47, 48 are arranged perpendicular to the flow current lines F of the aqueous product in the tank 2 (see FIG. 10).
    FIG. 13 illustrates a heating plate 10 ’installed in the bottom of a storage tank 2 for an aqueous product. A module 5 for supplying aqueous product is also shown. In this embodiment, heated anti-sloshing partitions 50, 51 face each other on either side of the module 5. Thanks to this arrangement, the module 5 and the aqueous product which it contains are heated by the means of secondary heating, this is particularly advantageous because it allows more thawing
    - 18 quickly module 5 only if it was thawed by primary heating alone. We can clearly see in this example how the secondary heating means assist the primary heating means.
    Of course, many modifications can be made to the invention without departing from the scope thereof.
    For example, having regard to the first object of the invention, the geometry of the heating plate 10 is not necessarily rectangular. Indeed, the illustrated heating plate is rectangular to adapt to the shape of the bottom of the illustrated storage tank, however, in another exemplary embodiment, the heating plate 10 is circular (not shown) or of another suitable shape. the shape of the bottom of the storage tank in which the heating plate is installed. Likewise, the illustrated heating plate is flat but in another embodiment, the heating plate is non-planar to adapt to the shape of the bottom of the storage tank in which the heating plate is installed, for example, the heating plate 10 is in staircase (not shown).
    Although in the example illustrated, the hydraulic heating circuit 11 and the electric heating circuit 12 are interleaved, one can envisage another configuration of these circuits, for example, the hydraulic heating circuit 11 winds on the heating plate 10 in following a route different from the route followed by the electric heating circuit 12 (not shown).
    With regard to the second object of the invention, it can be envisaged that the heating plate 10 'is the heating plate 10 of the first object of the invention so that the primary heating means of the heating plate 10' are a heating circuit hydraulic 11 combined with an electric heating circuit 12 (not shown). Thanks to this arrangement, the secondary heating means can also be a hydraulic heating circuit 11 combined with an electric heating circuit 12 (not shown).
    In addition, if we call the angle formed between the anti-slip partition and the axis perpendicular to the upper face 10 ”of the heating plate 10 ', we have oc = 0 ° when the anti-slip partition is perpendicular to the hot plate 10 '. In another embodiment of the invention (not shown), it can be envisaged that the angle a is between -45 ° and + 45 °.
    The reservoir according to the invention is preferably made of plastic (that is to say that its wall is mainly made of plastic). The term “plastic” designates any material comprising at least one polymer of synthetic resin. Any type of plastic can be used. Plastics that belong to the thermoplastics category are
    - 19particularly suitable. The term "thermoplastic" means any thermoplastic polymer, in particular thermoplastic elastomers and their mixtures. By the term "polymer" is meant both homopolymers and copolymers, especially binary and ternary copolymers.
    Although the figures illustrate a water tank configured to deliver water to an injection engine of a thermal vehicle, the invention is not limited to this application. Indeed, the dual-energy heating device according to the first object of the invention, respectively the heating anti-sloshing device according to the second object of the invention, can easily be installed in a urea tank, for example of the 'AdBlue, configured to deliver urea to an SCR catalyst of a diesel engine type thermal vehicle. In another application, the urea tank can be configured to deliver urea to an electrolyzer, a hydrolysis reactor or a fuel cell of an electric vehicle of the fuel cell type.
    In a vehicle of the autonomous or semi-autonomous type, in addition to the storage tanks for an aqueous product mentioned above, there are also tanks for aqueous product for cleaning sensors such as LIDARs and RADARs, the dual-heating device. energy according to the first object of the invention, respectively the anti-sloshing heating device according to the second object of the invention, also finds its application in this type of tank.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1. Heating anti-sloshing device (30) for a tank (2) for storing an aqueous product in a motor vehicle comprising at least one anti-sloshing partition (41, 42, 43, 44, 45, 46, 47, 48) provided with means for secondary heating of said aqueous product, characterized in that said non-slip partition (41,42, 43, 44, 45, 46, 47, 48) is integral with a heating plate (10, 10 ′, 10 ”) comprising primary heating means (11, 11 ', 11 ”, 12, 12', 12”) of said aqueous product.
    [2" id="c-fr-0002]
    2. Device according to claim 1, characterized in that said anti-slippage partition (41,42, 43, 44, 45, 46, 47, 48) is fixed to said heating plate (10, 10 ', 10 ”) for example by welding, riveting or screwing.
    [3" id="c-fr-0003]
    3. Device according to claim 1, characterized in that said anti-slip partition (41, 42, 43, 44, 45, 46, 47, 48) comes from said heating plate (10, 10 ’, 10”).
    [4" id="c-fr-0004]
    4. Device according to any one of the preceding claims, characterized in that the angle formed between the anti-sloshing partition (41,42, 43, 44, 45, 46, 47, 48) and an axis perpendicular to the plate heater (10, 10 ', 10 ”) is between -45 ° and + 45 °, preferably equal to 0 °.
    [5" id="c-fr-0005]
    5. Device according to any one of the preceding claims, characterized in that said secondary heating means are common to said primary heating means (11, 11 ’, 11”, 12, 12 ’, 12”).
    [6" id="c-fr-0006]
    6. Device according to any one of the preceding claims, characterized in that said secondary and / or primary heating means (11, 11 ', 11 ”, 12, 12', 12”) comprise an electric heating circuit and / or a hydraulic heating circuit.
    [7" id="c-fr-0007]
    7. Device according to the preceding claim, characterized in that said secondary heating means share with said primary heating means (11, 11 ', 11 ”, 12, 12', 12”) the same electric heating circuit and / or hydraulic.
    [8" id="c-fr-0008]
    8. Device according to any one of the preceding claims, characterized in that said anti-sloshing partition (41,42, 43, 44,45, 46,47,48) and / or said plate
    - 21 heater (10, 10 ’, 10”) includes at least part of the metal elements such as for example stainless steel and / or aluminum elements.
    [9" id="c-fr-0009]
    9. Storage tank for an aqueous product comprising an interior volume, a
    5 bottom wall, flow stream lines (F) of the aqueous product and a heating anti-sloshing device (30) as defined in any one of the preceding claims, characterized in that said at least one anti-sloshing partition (41, 42, 43, 44, 45, 46, 47, 48) extends in the interior volume of the tank (2) perpendicular to the bottom wall of the tank, on the one hand, and to the 10 lines of current d 'flow (F) in the tank, on the other hand, and in that the heating plate (10,10', 10 ”) extends parallel to the bottom wall of the tank.
    [10" id="c-fr-0010]
    10. Tank according to claim 9, characterized in that it further comprises a supply module (5) located between two non-slip partitions (41,42, 43, 44,
    [11" id="c-fr-0011]
    15 45.46.47.48).
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN112042266A|2020-12-04|
    FR3080653A1|2019-11-01|
    EP3785488A1|2021-03-03|
    FR3080653B1|2020-11-06|
    EP3785488B1|2021-12-22|
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    法律状态:
    2019-07-30| PLFP| Fee payment|Year of fee payment: 2 |
    2019-11-01| PLSC| Publication of the preliminary search report|Effective date: 20191101 |
    2020-07-30| PLFP| Fee payment|Year of fee payment: 3 |
    2021-07-30| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1853753A|FR3080653B1|2018-04-27|2018-04-27|BI-ENERGY HEATING DEVICE FOR AQUEOUS PRODUCTS TANK|
    FR1853753|2018-04-27|CN201980028543.5A| CN112042266A|2018-04-27|2019-04-26|Dual-energy heating device for an aqueous product tank|
    PCT/EP2019/060798| WO2019207134A1|2018-04-27|2019-04-26|Two-energy heating device for aqueous product reservoir|
    EP19722031.2A| EP3785488B1|2018-04-27|2019-04-26|Two-energy heating device for aqueous product reservoir|
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