EP2964494A1 - Device for heating window-washing liquid in an additional tank of a vehicle - Google Patents

Device for heating window-washing liquid in an additional tank of a vehicle

Info

Publication number
EP2964494A1
EP2964494A1 EP14713517.2A EP14713517A EP2964494A1 EP 2964494 A1 EP2964494 A1 EP 2964494A1 EP 14713517 A EP14713517 A EP 14713517A EP 2964494 A1 EP2964494 A1 EP 2964494A1
Authority
EP
European Patent Office
Prior art keywords
additional reservoir
degassing box
wall
additional
vehicle
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Withdrawn
Application number
EP14713517.2A
Other languages
German (de)
French (fr)
Inventor
Gerard Jeuffe
Nicolas RILAT
Frederic Guidez
Christophe Broquet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2964494A1 publication Critical patent/EP2964494A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
    • B60S1/48—Liquid supply therefor
    • B60S1/487—Liquid supply therefor the liquid being heated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
    • B60S1/48—Liquid supply therefor
    • B60S1/50—Arrangement of reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs

Definitions

  • the invention relates to a device for heating an additional reservoir of the windshield washer water of a vehicle from the calories provided by the degassing box of the cooling circuit of the vehicle.
  • the cooling of the motor and of various accessories directly connected thereto is effected, in a motor vehicle, by means of a cooling circuit filled with a suitable liquid, usually water added with a product suitable for to a certain extent limit its vaporization, this circuit passing in particular through the cylinder head of the engine by pipes or water is admitted under pressure from a circulation pump, connections and connecting pipes putting this circuit in communication with a radiator in front of which rotates a fan whose start is controlled as soon as the temperature in the circuit reaches a predetermined threshold.
  • a suitable liquid usually water added with a product suitable for to a certain extent limit its vaporization
  • This degassing box provides an essential function for the regulation and safety of the cooling circuit, in particular by lowering the level of gas contained in this circuit to a limit value set by the corresponding calibration of an exhaust valve, the presence of a too large amount of gas that can have serious consequences on the satisfactory operation of the circuit, such as, for example, defusing the circulation pump, damaging the engine cylinder head in case of insufficient cooling, moreover, if the circulation of the liquid does not reach a suitable flow rate, to create cavitation phenomena which can degrade certain essential parts, or finally to increase the discharges of water to the outside through an overflow orifice provided on the circuit, these various effects being the consequence of excessive gas presence.
  • the decisive role of the degassing box requires that, in order for it to reach the required efficiency, not only that it be precisely located above the level of the cylinder head and the radiator, but also that the rise in temperature cooling for 15 minutes to reach 60 ° in a diesel engine, also 60 ° but in 5 minutes for a gasoline engine, generally between 0.8 ° and 2 liters, and that this temperature is permanently maintained at immediate vicinity of these levels without significant jolts.
  • the windshield washer fluid used stored in a or several tanks housed inside the body of the vehicle, in particular in the engine compartment in the vicinity of the cooling system degassing box, be raised to a certain temperature, the windshield wiper fluid having obviously a better cleaning power of the windows, helping to take off better and eliminate the various soiling that has been deposited therein.
  • the hot window washer fluid improves the wiping performance at negative external temperature by changing the viscosity of the washer fluid, the windscreen washer fluid being indexed with respect to the temperature.
  • a conventional solution may consist, to satisfy this last improvement, to provide in the reservoir windshield wiper fluid, a heating resistor, automatically energized or by command of the driver himself which has for example on his table of edge of an appropriate button. But this solution for reheating the water of a windshield washer reservoir by a specific control, besides it is not practical, has a serious disadvantage of high energy consumption and consequently performance. equal to the vehicle, a significant increase in the volume of fuel required to produce it.
  • the document FR2875763 describes a device for reheating windshield washer fluid of a vehicle comprising, mounted in its engine compartment, on the one hand a degassing box forming part of the engine cooling circuit, and on the other hand a fuel tank. pressurized window washer fluid, this reservoir being connected to a circulating pump removing the washing liquid windows in the latter and delivering it to dispensing and distribution nozzles on the glass surfaces concerned, the tank surrounds the degassing box by providing between them a separation space of determined thickness.
  • this device allows to heat the windshield washer fluid to the required temperature to achieve proper cleaning glass surfaces.
  • the volume of windshield washer fluid to be heated is high, which implies that the heating time to obtain a correct temperature is relatively long.
  • the heating time of the windshield washer fluid should be as fast as possible, that is to say from the start of the vehicle so that the driver of the vehicle can quickly benefit from a hot window washer fluid to effectively clean the glazed surfaces of the vehicle.
  • the present invention aims to overcome this drawback by taking the necessary calories for raising the temperature of windshield wiper fluid to clean the glazed surfaces of a motor vehicle contained in an additional reservoir housed in the engine compartment of this vehicle from of the degassing box of its cooling circuit.
  • the invention proposes a windscreen washer fluid heating device of an additional tank of a vehicle, comprising in its engine compartment a degassing box, the additional tank having a wall contiguous on a wall of the degassing box (10) by providing an air gap between the wall of the degassing box and the wall of the additional tank.
  • the additional reservoir is pivotally mounted to generate a variable volume for the air knife.
  • the additional reservoir has an annular sector shape.
  • the additional reservoir comprises spherical cap-shaped walls parallel to each other.
  • the additional reservoir comprises walls in the form of a spherical cap, parallel to the wall of the degassing box with which the walls are contiguous.
  • the additional reservoir is equipped with a set screw.
  • the adjusting screw (is engaged by a thread in a tab integral with the degassing box and rotatably mounted in a lug integral with the additional reservoir.
  • the adjusting screw has shoulder and a knurled knob disposed on either side of the thickness of the additional reservoir integral lug.
  • the adjusting screw is operated by the knurled knob to increase or decrease the distance d.
  • the integral lug of the additional reservoir has a thickness restriction on its section forming a hinge.
  • the additional reservoir has a width L smaller than the diameter D of the degassing box.
  • FIG 1 shows a schematic view of the installation comprising the heating device of an additional reservoir windshield washer fluid of a vehicle
  • FIG. 2 shows a diagrammatic sectional view of the device for reheating an additional reservoir of windshield washer fluid of a vehicle according to the invention
  • FIG. 3 is a diagrammatic view from above in section A-A of FIG. 2 of the device for reheating an additional reservoir of windshield washer fluid of a vehicle according to the invention
  • FIG. 1 presents a schematic view of the installation 2 comprising the device 1 for reheating an additional reservoir 3 of windshield washer fluid of a vehicle.
  • the installation 2 comprises a main tank 4 provided with a filler neck 4a, containing washing-up liquid 5. At least one pump 6 is connected to the main tank 4.
  • This pump 6 can convey the washer fluid 5 successively via the conduit 7 having a non-return valve 8 to the additional reservoir 3 where it is heated by the supply of calories from the degassing box 10, then via the conduit 11 and the secondary conduits 11a, 11b connected to the nozzles 12, 13 to deliver via the nozzles 12, 13 or 14 maps of windshield washer liquid hot on the glass surface 15 which will be cleaned by the wiper blades 16, ie a stream of hot windscreen washer fluid on the blade 16 of the windscreen wiper 16 to effectively clean the glass surface concerned, while minimizing the consumption of washing liquid windows and therefore to reduce the volume of the main tank 4.
  • the additional tank 3 has a wall facing a specific area of the spherical wall of the degassing box.
  • FIG. 2 is a diagrammatic sectional view of the device 1 for reheating an additional reservoir 3 of windshield washer fluid of a vehicle according to the invention.
  • the additional reservoir 3 has a wall 17 whose surface is of identical shape to the surface wall portion of the degassing box 10 to which it is attached, while providing an air gap 18 between these surfaces.
  • This surface wall 17 of the additional reservoir 3 has a hollow surface in the form of a spherical cap section.
  • the wall 19 of opposite surface of the additional reservoir 3 has an identical shape so as to create a volume of liquid in the form of an annular reserve of windshield washer fluid.
  • the lower surface 20 and upper surfaces 21 are horizontal and parallel to each other, the same is true for the side surface walls which are vertical and parallel to each other.
  • the distance d of the air gap 18 between the additional reservoir 3 and the degassing box 10 can be varied in order to regulate the temperature of the windscreen washer fluid of the additional reservoir 3.
  • the additional reservoir 3 is connected in rotation. by a tab 22 constituting its upper wall 21 to a tab integral with the degassing box 10 via a cylindrical axis 24.
  • a setting shaft 25 having a thread 26 has a prolonged end by a stopper 33, is engaged in a threaded tab 27, integral with the base of The other end of the axis 25 is connected in rotation to the additional reservoir 3 via a constituent leg 27 of the lower wall of the additional reservoir 3.
  • the axis 25 comprises a cylindrical portion 28 which is mounted freely in rotation in a bore 29 of the lug 30 of the additional reservoir 3.
  • the maintenance of the axis 25 is formed by two shoulders 31, 32 constituting the axis 25, according to the appropriate knowledge of the skilled person, arranged on either side of the thickness of the tab 30 secured to the additional reservoir 3.
  • the shoulder 31 placed at the end of the axis 25 may be a chamfered knurled knob maneuvering.
  • the tab 30 comprises near its base, a thickness restriction 34 on its section forming a hinge for absorbing the rotational movement of the additional reservoir 3, by the displacement of the tab 30 driven by the axis 25.
  • the distance d it is understood that it is possible to vary the distance d, by screwing or unscrewing the adjustment shaft 25 engaged in the tab through the knurled knob 31 along the double arrow 36, this which has the effect of obtaining a windshield washer fluid 35 at a more or less hot temperature.
  • the knurled knob 31 may be replaced by a remotely controlled actuator which adjusts the distance d and therefore the windshield liquid temperature 35 according to a predetermined program. The optimization of this additional reservoir 3 makes it possible to quickly obtain the heating of a volume of windshield washer fluid 35 sufficient to achieve rapid cleaning of the glass surface.
  • the additional reservoir 3 comprises, at the top of its outer wall, a supply duct 38 for windscreen washer liquid 35 coming from the main reservoir and at the bottom of its outer part a discharge duct 37 of the windscreen washer fluid towards the sprinklers of the vehicle.
  • the additional reservoir 3 can be very close to the degassing box 10 to obtain a windshield washer fluid 35 warmed quickly, and after using the windshield washer fluid, the degassing box 10 being at its temperature Operating.
  • the additional reservoir 3 is filled again, the heating of the windscreen washer 35 is faster and requires only a maintenance at a predetermined temperature. Therefore, the exchange of calories can be reduced by increasing the distance d between the degassing box 10 and the additional reservoir 3.
  • Figure 3 shows a schematic top view in section AA of Figure 2, the device 1 for heating an additional reservoir 3 windshield washer fluid of a vehicle according to the invention.
  • the additional tank wall 3 opposite the degassing box 10 matches the spherical shape of the degassing box 10 while providing an air gap 18 in the annular space d constant.
  • the additional reservoir 3 also has a shape of annular section so as to promote a homogeneous heating of the windshield washer fluid.
  • the walls 17 and 19 of the additional reservoir are parallel to each other and they are also parallel to a zone of the wall 43 of the spherical shape of the degassing box 10.
  • the side walls 41, 42 are parallel to one another and the length of the reservoir L is smaller than the diameter D of the degassing box 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention concerns a device (1) for heating window-washing liquid in an additional tank (3) of a vehicle, comprising, in the engine compartment of same, a degassing box (10), characterised in that the additional tank (3) comprises a wall (17) affixed to a wall (43) of the degassing box (10), leaving an air gap (18) between the wall (43) of the degassing box (10) and the wall of the additional tank (3).

Description

DISPOSITIF DE RECHAUFFAGE DE LIQUIDE LAVE-VITRES D'UN RESEVOIR ADDITIONNEL D'UN VEHICULE DEVICE FOR HEATING WINDSCREEN LIQUID OF AN ADDITIONAL RESEVOIR OF A VEHICLE
L'invention concerne un dispositif de réchauffage d'un réservoir additionnel de l'eau de lave-vitres d'un véhicule à partir des calories fournie par la boite de dégazage du circuit de refroidissement de ce véhicule . The invention relates to a device for heating an additional reservoir of the windshield washer water of a vehicle from the calories provided by the degassing box of the cooling circuit of the vehicle.
Le refroidissement du moteur et de divers accessoires directement liés à celui-ci s'effectue, dans un véhicule automobile, au moyen d'un circuit de refroidissement rempli d'un liquide approprié, usuellement de l'eau additionnée d'un produit propre à limiter dans une certaine mesure sa vaporisation, ce circuit traversant notamment la culasse du moteur par des tubulures ou l'eau est admise sous pression depuis une pompe de circulation, des piquages et canalisations de liaison mettant ce circuit en communication avec un radiateur devant lequel tourne un ventilateur dont la mise en route est commandée dès que la température dans le circuit atteint un seuil prédéterminé. Sur ce circuit de refroidissement, présent sur tout véhicule automobile, il est nécessaire de prévoir un volume libre en communication avec lui, confiné dans un ensemble clos, qu'il est convenu d'appeler boite de dégazage et dont le rôle est d'assurer la séparation du liquide et de sa vapeur, le cas échéant de la fraction des gaz de combustion et de l'air extérieur qui se sont introduits dans le circuit lors du fonctionnement du moteur ou à l'occasion du remplissage de ce circuit avec le liquide qu'il contient. Cette boite de dégazage assure une fonction essentielle pour la régulation et la mise en sécurité du circuit de refroidissement, en particulier en abaissant le niveau de gaz contenu dans ce circuit à une valeur limite fixée par le tarage correspondant d'une soupape d'échappement, la présence d'une quantité de gaz trop importante pouvant avoir des conséquences graves sur le fonctionnement satisfaisant du circuit, comme par exemple conduire à désamorcer la pompe de circulation, à endommager la culasse du moteur en cas de refroidissement insuffisant, plus encore, si la circulation du liquide n'atteint pas un débit approprié, à créer des phénomènes de cavitation qui peuvent dégrader certaines pièces essentielles, ou enfin à accroître les rejets d'eau vers l'extérieur par un orifice de trop plein prévu sur le circuit, ces divers effets étant la conséquence d'une présence de gaz excessive. Le rôle déterminant de la boite de dégazage exige cependant, pour que celle-ci atteigne l'efficacité requise, non seulement qu'elle soit localisée avec précision au-dessus du niveau de la culasse et du radiateur, mais encore que la montée en température du refroidissement soit de 15 minutes pour atteindre 60° dans un moteur diesel, également de 60° mais en 5 minutes pour un moteur à essence, généralement compris entre 0,8° et 2 litres, et que cette température soit en permanence maintenue au voisinage immédiate de ces niveaux sans à-coups notables . The cooling of the motor and of various accessories directly connected thereto is effected, in a motor vehicle, by means of a cooling circuit filled with a suitable liquid, usually water added with a product suitable for to a certain extent limit its vaporization, this circuit passing in particular through the cylinder head of the engine by pipes or water is admitted under pressure from a circulation pump, connections and connecting pipes putting this circuit in communication with a radiator in front of which rotates a fan whose start is controlled as soon as the temperature in the circuit reaches a predetermined threshold. On this cooling circuit, present on any motor vehicle, it is necessary to provide a free volume in communication with it, confined in a closed assembly, which is called a degassing box and whose role is to ensure the separation of the liquid and its vapor, as the case may be, from the fraction of the combustion gases and the outside air introduced into the circuit during the operation of the motor or during the filling of this circuit with the liquid it contains. This degassing box provides an essential function for the regulation and safety of the cooling circuit, in particular by lowering the level of gas contained in this circuit to a limit value set by the corresponding calibration of an exhaust valve, the presence of a too large amount of gas that can have serious consequences on the satisfactory operation of the circuit, such as, for example, defusing the circulation pump, damaging the engine cylinder head in case of insufficient cooling, moreover, if the circulation of the liquid does not reach a suitable flow rate, to create cavitation phenomena which can degrade certain essential parts, or finally to increase the discharges of water to the outside through an overflow orifice provided on the circuit, these various effects being the consequence of excessive gas presence. The decisive role of the degassing box, however, requires that, in order for it to reach the required efficiency, not only that it be precisely located above the level of the cylinder head and the radiator, but also that the rise in temperature cooling for 15 minutes to reach 60 ° in a diesel engine, also 60 ° but in 5 minutes for a gasoline engine, generally between 0.8 ° and 2 liters, and that this temperature is permanently maintained at immediate vicinity of these levels without significant jolts.
En particulier, il s'avère que si, en fonctionnement, se produit une perte sensible et brutale de calories au niveau de la boite de dégazage, conduisant à une baisse de pression dans le circuit et à un accroissement corrélatif de la vaporisation du liquide, se produit une perte sensible vaporisation du liquide, les inconvénients précités qui apparaissent immédiatement, risquent de provoquer un refroidissement insuffisant de la culasse et des autres parties du véhicule intéressées par le circuit, avec le risque maximal de provoquer la rupture du moteur et l'immobilisation immédiate du véhicule, entraînant des coûts de réparation excessifs.  In particular, it turns out that if, in operation, there is a substantial and sudden loss of calories in the degassing box, leading to a pressure drop in the circuit and a correlative increase in the vaporization of the liquid, a significant loss of vaporization of the liquid occurs, the aforementioned drawbacks which appear immediately, may cause insufficient cooling of the cylinder head and other parts of the vehicle concerned by the circuit, with the maximum risk of causing the engine to break and immobilize the vehicle, resulting in excessive repair costs.
On conçoit par ailleurs que, pour remédier à un tout autre problème, à savoir le lavage optimal des vitres du pare-brise avant et/ou de la lunette arrière du véhicule, le cas échéant pour nettoyer les projecteurs avant, au moyen d'une projection d'eau sous pression sur les surfaces vitrées correspondantes au moyen de gicleurs ou autres organes similaires, coopérant avec des balais d ' essuie-glace ou éléments de raclage analogues, il soit particulièrement intéressant que le liquide lave-vitres utilisée, stockée dans un ou plusieurs réservoirs logés à l'intérieur de la carrosserie du véhicule, notamment dans le compartiment du moteur au voisinage de la boite de dégazage du circuit de refroidissement, soit portée à une certaine température, le liquide lave-vitres chaud ayant évidemment un meilleur pouvoir de nettoyage des vitres, en aidant à mieux décoller et éliminer les diverses salissures qui s'y sont déposées. En particulier, le liquide lave-vitres chaud perfectionne la prestation d'essuyage à température extérieure négative en changeant la viscosité du liquide lave- vitres, le liquide lave-vitres étant indexé par rapport à la température. Une solution classique peut consister, pour satisfaire à cette dernière amélioration, à prévoir dans le réservoir du liquide lave-vitres, une résistance chauffante, mise sous tension de manière automatique ou par commande du conducteur lui-même qui dispose par exemple sur son tableau de bord d'un bouton approprié. Mais cette solution de réchauffage de l'eau d'un réservoir de lave-vitres par une commande spécifique, outre qu'elle n'est pas pratique, présente un grave inconvénient consistant dans une consommation d'énergie élevée et par suite, à performances égales du véhicule, à un accroissement non négligeable du volume de carburant nécessaire pour produire celle-ci. Le document FR2875763 décrit un dispositif de réchauffage de liquide lave-vitres d'un véhicule comportant, montés dans son compartiment moteur, d'une part une boite de dégazage faisant partie du circuit de refroidissement du moteur, et d'autre part un réservoir de liquide lave-vitres sous pression, ce réservoir étant connecté à une pompe de circulation prélevant le liquide lave- vitres dans celui-ci et la délivrant à des gicleurs de distribution et de répartition sur les surfaces vitrés concernées, le réservoir entoure la boite de dégazage en ménageant entre eux un espace de séparation d'épaisseur déterminée. It is also conceivable that, to remedy a completely different problem, namely the optimal washing of the windows of the front windshield and / or the rear window of the vehicle, if necessary to clean the headlights before, by means of a projection of water under pressure on the corresponding glazed surfaces by means of nozzles or other similar members, cooperating with wiper blades or similar scraper elements, it is particularly advantageous that the windshield washer fluid used, stored in a or several tanks housed inside the body of the vehicle, in particular in the engine compartment in the vicinity of the cooling system degassing box, be raised to a certain temperature, the windshield wiper fluid having obviously a better cleaning power of the windows, helping to take off better and eliminate the various soiling that has been deposited therein. In particular, the hot window washer fluid improves the wiping performance at negative external temperature by changing the viscosity of the washer fluid, the windscreen washer fluid being indexed with respect to the temperature. A conventional solution may consist, to satisfy this last improvement, to provide in the reservoir windshield wiper fluid, a heating resistor, automatically energized or by command of the driver himself which has for example on his table of edge of an appropriate button. But this solution for reheating the water of a windshield washer reservoir by a specific control, besides it is not practical, has a serious disadvantage of high energy consumption and consequently performance. equal to the vehicle, a significant increase in the volume of fuel required to produce it. The document FR2875763 describes a device for reheating windshield washer fluid of a vehicle comprising, mounted in its engine compartment, on the one hand a degassing box forming part of the engine cooling circuit, and on the other hand a fuel tank. pressurized window washer fluid, this reservoir being connected to a circulating pump removing the washing liquid windows in the latter and delivering it to dispensing and distribution nozzles on the glass surfaces concerned, the tank surrounds the degassing box by providing between them a separation space of determined thickness.
On comprend bien que ce dispositif permet de réchauffer le liquide lave-vitres à la température requise pour réaliser un nettoyage correct des surfaces vitrées. Par contre, le volume de liquide lave-vitres à réchauffer est important, ce qui implique que le temps de chauffage pour obtenir une température correcte est relativement long. Au contraire le temps de chauffage du liquide lave-vitres devrait être le plus rapide possible, c'est-à-dire dès le démarrage du véhicule afin que le conducteur du véhicule puisse bénéficier rapidement d'un liquide lave-vitres chaud pour nettoyer efficacement les surfaces vitrées du véhicule.  It is understood that this device allows to heat the windshield washer fluid to the required temperature to achieve proper cleaning glass surfaces. On the other hand, the volume of windshield washer fluid to be heated is high, which implies that the heating time to obtain a correct temperature is relatively long. On the contrary, the heating time of the windshield washer fluid should be as fast as possible, that is to say from the start of the vehicle so that the driver of the vehicle can quickly benefit from a hot window washer fluid to effectively clean the glazed surfaces of the vehicle.
La présente invention vise à pallier cet inconvénient en prélevant les calories nécessaires à l'élévation de la température de liquide lave-vitres pour nettoyer les surfaces vitrées d'un véhicule automobile contenue dans un réservoir additionnel logé dans le compartiment moteur de ce véhicule à partir de la boite de dégazage de son circuit de refroidissement.  The present invention aims to overcome this drawback by taking the necessary calories for raising the temperature of windshield wiper fluid to clean the glazed surfaces of a motor vehicle contained in an additional reservoir housed in the engine compartment of this vehicle from of the degassing box of its cooling circuit.
A cet effet l'invention propose un dispositif de réchauffage de liquide lave-vitres d'un réservoir additionnel d'un véhicule, comprenant dans son compartiment moteur une boite de dégazage, le réservoir additionnel comportant une paroi accolée sur une paroi de la boite de dégazage (10) en ménageant une lame d'air entre la paroi de la boite de dégazage et la paroi du réservoir additionnel. To this end, the invention proposes a windscreen washer fluid heating device of an additional tank of a vehicle, comprising in its engine compartment a degassing box, the additional tank having a wall contiguous on a wall of the degassing box (10) by providing an air gap between the wall of the degassing box and the wall of the additional tank.
Avantageusement, le réservoir additionnel est monté pivotant pour engendrer à la lame d'air un volume variable. Advantageously, the additional reservoir is pivotally mounted to generate a variable volume for the air knife.
Selon une variante, le réservoir additionnel à une forme de secteur annulaire. According to a variant, the additional reservoir has an annular sector shape.
Selon un autre mode de réalisation de l'invention, le réservoir additionnel comporte des parois en forme de calotte sphérique et parallèles entre- elles . According to another embodiment of the invention, the additional reservoir comprises spherical cap-shaped walls parallel to each other.
De manière optionnelle, le réservoir additionnel comporte des parois en forme de calotte sphérique, parallèle la paroi de la boite de dégazage avec laquelle les parois sont accolées. Optionally, the additional reservoir comprises walls in the form of a spherical cap, parallel to the wall of the degassing box with which the walls are contiguous.
Selon un mode de réalisation préféré de l'invention, le réservoir additionnel est équipé d'une vis de réglage. According to a preferred embodiment of the invention, the additional reservoir is equipped with a set screw.
Selon une variante, la vis de réglage (est en prise par un filetage dans une patte solidaire de la boîte de dégazage et monté libre en rotation dans une patte solidaire du réservoir additionnel. According to a variant, the adjusting screw (is engaged by a thread in a tab integral with the degassing box and rotatably mounted in a lug integral with the additional reservoir.
Avantageusement, la vis de réglage comporte épaulement et un bouton moleté disposés de part d'autre de l'épaisseur de la patte solidaire réservoir additionnel. Advantageously, the adjusting screw has shoulder and a knurled knob disposed on either side of the thickness of the additional reservoir integral lug.
De façon avantageuse, la vis de réglage est manoeuvrée par le bouton moleté pour augmenter ou diminuer la distance d. Advantageously, the adjusting screw is operated by the knurled knob to increase or decrease the distance d.
Selon une variante, la patte solidaire du réservoir additionnel comporte une restriction d'épaisseur sur sa section formant une charnière. According to a variant, the integral lug of the additional reservoir has a thickness restriction on its section forming a hinge.
Selon autre variante, le réservoir additionnel possède une largeur L inférieur au diamètre D de la boîte de dégazage. According to another variant, the additional reservoir has a width L smaller than the diameter D of the degassing box.
L'invention sera bien comprise et d'autres aspects et avantages apparaîtront clairement à la lecture de la description qui suit donnée à titre d'exemple par rapport aux figures annexées sur lesquelles : The invention will be clearly understood and other aspects and advantages will become clear from reading the following description given by way of example with respect to the appended figures in which:
-la figure 1 présente une vue schématique de l'installation comportant le dispositif de réchauffage d'un réservoir additionnel de liquide lave-vitres d'un véhicule ; -la figure 2 présente une vue schématique de profil en section du dispositif de réchauffage d'un réservoir additionnel de liquide lave-vitres d'un véhicule suivant l'invention; FIG 1 shows a schematic view of the installation comprising the heating device of an additional reservoir windshield washer fluid of a vehicle; FIG. 2 shows a diagrammatic sectional view of the device for reheating an additional reservoir of windshield washer fluid of a vehicle according to the invention;
-la figure 3 présente une vue schématique de dessus en section A-A de la figure 2, du dispositif de réchauffage d'un réservoir additionnel de liquide lave-vitres d'un véhicule suivant l'invention; FIG. 3 is a diagrammatic view from above in section A-A of FIG. 2 of the device for reheating an additional reservoir of windshield washer fluid of a vehicle according to the invention;
La figure 1 présente une vue schématique de l'installation 2 comportant le dispositif 1 de réchauffage d'un réservoir additionnel 3 de liquide lave-vitres d'un véhicule. L'installation 2 comprend un réservoir principal 4 muni d'une goulotte 4a de remplissage, contenant du liquide 5 de lave-vitres. Au moins, une pompe 6 est connectée au réservoir principal 4. Cette pompe 6 permet de véhiculer le liquide 5 lave-vitres successivement via le conduit 7 comportant un clapet anti-retour 8, au réservoir additionnel 3 où il est réchauffé grâce à l'apport de calories de la boite de dégazage 10, puis via le conduit 11 et les conduits secondaires lia, 11b raccordés aux gicleurs 12, 13 de délivrer par l'intermédiaire des gicleurs 12, 13 soit des mappes 14 de liquide lave-vitres chaud sur la surface vitrée 15 qui sera nettoyée par les balais 16 d ' essuie-vitres , soit un filet de liquide lave-glace chaud, laminaire sur la lame du balai 16 d ' essuie-vitres permettant de nettoyer efficacement la surface vitrée concernée, tout en minimisant la consommation de liquide lave- vitres et par conséquent de diminuer le volume du réservoir principal 4. On comprend que le réservoir additionnel 3 comporte une paroi en regard d'une zone déterminée de la paroi sphérique de la boite de dégazage. FIG. 1 presents a schematic view of the installation 2 comprising the device 1 for reheating an additional reservoir 3 of windshield washer fluid of a vehicle. The installation 2 comprises a main tank 4 provided with a filler neck 4a, containing washing-up liquid 5. At least one pump 6 is connected to the main tank 4. This pump 6 can convey the washer fluid 5 successively via the conduit 7 having a non-return valve 8 to the additional reservoir 3 where it is heated by the supply of calories from the degassing box 10, then via the conduit 11 and the secondary conduits 11a, 11b connected to the nozzles 12, 13 to deliver via the nozzles 12, 13 or 14 maps of windshield washer liquid hot on the glass surface 15 which will be cleaned by the wiper blades 16, ie a stream of hot windscreen washer fluid on the blade 16 of the windscreen wiper 16 to effectively clean the glass surface concerned, while minimizing the consumption of washing liquid windows and therefore to reduce the volume of the main tank 4. It is understood that the additional tank 3 has a wall facing a specific area of the spherical wall of the degassing box.
La figure 2 présente une vue schématique de profil en section du dispositif 1 de réchauffage d'un réservoir additionnel 3 de liquide lave-vitres d'un véhicule suivant l'invention. Le réservoir additionnel 3 possède une paroi 17 dont la surface est de forme identique à la partie de paroi de surface de la boite de dégazage 10 à laquelle il est accolé, tout en ménageant une lame d'air 18 entre ces surfaces. Cette paroi 17 de surface du réservoir additionnel 3 présente une surface en creux en forme d'une section de calotte sphérique. La paroi 19 de surface opposée du réservoir additionnel 3 à une forme identique de manière à créer un volume de liquide sous forme d'une réserve annulaire de liquide lave-vitres. Les parois de surfaces inférieures 20 et supérieures 21 sont horizontales et parallèles entre elles, il en est de même pour les parois de surfaces latérales qui sont verticales et parallèles entre elles. La distance d de la lame d'air 18 entre le réservoir additionnel 3 et la boite de dégazage 10 peut varier afin de réguler la température du liquide lave-vitres du réservoir additionnel 3. A cet effet, le réservoir additionnel 3 est lié en rotation par une patte 22 constitutive de sa paroi supérieure 21 à une patte solidaire de la boîte de dégazage 10 par l'intermédiaire d'un axe cylindrique 24. Un axe de réglage 25 comportant un filetage 26 a une extrémité prolongée par une butée d'arrêt 33, est en prise dans une patte 27 taraudée, solidaire de la base de la boîte de dégazage 10. L'autre extrémité de l'axe 25 est liée en rotation, au réservoir additionnel 3 par l'intermédiaire d'une patte constitutive 27 de la paroi inférieure du réservoir additionnel 3. Dans ce but, l'axe 25 comporte une partie cylindrique 28 qui vient se monter librement en rotation dans un alésage 29 de la patte 30 du réservoir additionnel 3. Le maintien de l'axe 25 est réalisé par deux épaulements 31, 32 constitutifs de l'axe 25, selon les connaissances appropriées de l'homme de métier, disposés de part et d'autre de l'épaisseur de la patte 30 solidaire du réservoir additionnel 3. L'épaulement 31 placé à l'extrémité de l'axe 25 peut être un bouton moleté chanfreiné de manœuvre. En outre, la patte 30 comprend à proximité de sa base, une restriction d'épaisseur 34 sur sa section formant une charnière permettant d'absorber le mouvement de rotation du réservoir additionnel 3, par le déplacement de la patte 30 entraîné par l'axe de réglage 25. Ainsi, on comprend qu'il est possible de faire varier la distance d, en vissant ou dévissant l'axe de réglage 25 en prise dans la patte par l'intermédiaire du bouton moleté 31 suivant la double flèche 36, ce qui a pour effet d'obtenir un liquide de lave-vitres 35 à une température plus ou moins chaude. Dans une autre alternative, le bouton moleté 31 peut être remplacé par un actionneur piloté à distance qui règle la distance d et par conséquent la température de liquide de lave-vitres 35 selon un programme déterminé. L'optimisation de ce réservoir additionnel 3 permet d'obtenir rapidement le réchauffage d'un volume de liquide lave-vitres 35 suffisant pour réaliser un nettoyage rapide de la surface vitrée. De plus, le réservoir additionnel 3 comporte en haut de sa paroi externe un conduit d'alimentation 38 en liquide lave-vitres 35 venant du réservoir principal et en bas de sa partie externe un conduit d'évacuation 37 du liquide lave-vitres vers les gicleurs du véhicule. Lors du démarrage du véhicule, le réservoir additionnel 3 peut être très rapproché de la boite de dégazage 10 pour obtenir un liquide de lave-vitres 35 réchauffé rapidement, et après utilisation du liquide lave-vitres, la boite de dégazage 10 étant à sa température de fonctionnement. Le réservoir additionnel 3 est à nouveau rempli, le réchauffage du liquide lave-vitres 35 est plus rapide et demande seulement un maintien à une température déterminée. Par conséquent, l'échange de calories peut être réduit en augmentant la distance d entre la boite de dégazage 10 et le réservoir additionnel 3. FIG. 2 is a diagrammatic sectional view of the device 1 for reheating an additional reservoir 3 of windshield washer fluid of a vehicle according to the invention. The additional reservoir 3 has a wall 17 whose surface is of identical shape to the surface wall portion of the degassing box 10 to which it is attached, while providing an air gap 18 between these surfaces. This surface wall 17 of the additional reservoir 3 has a hollow surface in the form of a spherical cap section. The wall 19 of opposite surface of the additional reservoir 3 has an identical shape so as to create a volume of liquid in the form of an annular reserve of windshield washer fluid. The lower surface 20 and upper surfaces 21 are horizontal and parallel to each other, the same is true for the side surface walls which are vertical and parallel to each other. The distance d of the air gap 18 between the additional reservoir 3 and the degassing box 10 can be varied in order to regulate the temperature of the windscreen washer fluid of the additional reservoir 3. For this purpose, the additional reservoir 3 is connected in rotation. by a tab 22 constituting its upper wall 21 to a tab integral with the degassing box 10 via a cylindrical axis 24. A setting shaft 25 having a thread 26 has a prolonged end by a stopper 33, is engaged in a threaded tab 27, integral with the base of The other end of the axis 25 is connected in rotation to the additional reservoir 3 via a constituent leg 27 of the lower wall of the additional reservoir 3. For this purpose, the axis 25 comprises a cylindrical portion 28 which is mounted freely in rotation in a bore 29 of the lug 30 of the additional reservoir 3. The maintenance of the axis 25 is formed by two shoulders 31, 32 constituting the axis 25, according to the appropriate knowledge of the skilled person, arranged on either side of the thickness of the tab 30 secured to the additional reservoir 3. The shoulder 31 placed at the end of the axis 25 may be a chamfered knurled knob maneuvering. In addition, the tab 30 comprises near its base, a thickness restriction 34 on its section forming a hinge for absorbing the rotational movement of the additional reservoir 3, by the displacement of the tab 30 driven by the axis 25. Thus, it is understood that it is possible to vary the distance d, by screwing or unscrewing the adjustment shaft 25 engaged in the tab through the knurled knob 31 along the double arrow 36, this which has the effect of obtaining a windshield washer fluid 35 at a more or less hot temperature. In another alternative, the knurled knob 31 may be replaced by a remotely controlled actuator which adjusts the distance d and therefore the windshield liquid temperature 35 according to a predetermined program. The optimization of this additional reservoir 3 makes it possible to quickly obtain the heating of a volume of windshield washer fluid 35 sufficient to achieve rapid cleaning of the glass surface. In addition, the additional reservoir 3 comprises, at the top of its outer wall, a supply duct 38 for windscreen washer liquid 35 coming from the main reservoir and at the bottom of its outer part a discharge duct 37 of the windscreen washer fluid towards the sprinklers of the vehicle. When starting the vehicle, the additional reservoir 3 can be very close to the degassing box 10 to obtain a windshield washer fluid 35 warmed quickly, and after using the windshield washer fluid, the degassing box 10 being at its temperature Operating. The additional reservoir 3 is filled again, the heating of the windscreen washer 35 is faster and requires only a maintenance at a predetermined temperature. Therefore, the exchange of calories can be reduced by increasing the distance d between the degassing box 10 and the additional reservoir 3.
La figure 3 présente une vue schématique de dessus en section A-A de la figure 2, du dispositif 1 de réchauffage d'un réservoir additionnel 3 de liquide lave-vitres d'un véhicule suivant l'invention. La paroi du réservoir additionnel 3 en regard de la boite de dégazage 10, épouse la forme sphérique de la boite de dégazage 10 tout en ménageant une lame d'air 18 dans l'espace annulaire d constant. Le réservoir additionnel 3 a également une forme de section annulaire de manière à favoriser un chauffage homogène du liquide lave-vitres. Les parois 17 et 19 du réservoir additionnel sont parallèles entre elles et elles sont également parallèles à une zone de la paroi 43 de la forme sphérique de la boite de dégazage 10. Les parois latérales 41, 42 sont parallèles entre elles et la longueur du réservoir L est inférieure au diamètre D de la boite de dégazage 10. Figure 3 shows a schematic top view in section AA of Figure 2, the device 1 for heating an additional reservoir 3 windshield washer fluid of a vehicle according to the invention. The additional tank wall 3 opposite the degassing box 10, matches the spherical shape of the degassing box 10 while providing an air gap 18 in the annular space d constant. The additional reservoir 3 also has a shape of annular section so as to promote a homogeneous heating of the windshield washer fluid. The walls 17 and 19 of the additional reservoir are parallel to each other and they are also parallel to a zone of the wall 43 of the spherical shape of the degassing box 10. The side walls 41, 42 are parallel to one another and the length of the reservoir L is smaller than the diameter D of the degassing box 10.

Claims

REVENDICATIONS
1. Dispositif (1) de réchauffage de liquide lave- vitres d'un réservoir additionnel (3) d'un véhicule, comprenant dans son compartiment moteur une boite de dégazage (10), caractérisé en ce que le réservoir additionnel (3) comporte une paroi (17) accolée sur une paroi (43) de la boite de dégazage (10) en ménageant une lame d'air (18) entre la paroi (43) de la boite de dégazage (10) et la paroi du réservoir additionnel (3) .  1. Device (1) for heating windscreen washer fluid of an additional tank (3) of a vehicle, comprising in its engine compartment a degassing box (10), characterized in that the additional tank (3) comprises a wall (17) contiguous on a wall (43) of the degassing box (10) by providing an air gap (18) between the wall (43) of the degassing box (10) and the wall of the additional reservoir (3).
2. Dispositif (1) selon la revendication 1, caractérisé en ce que le réservoir additionnel (3) est monté pivotant pour engendrer à la lame d'air (18) un volume variable. 2. Device (1) according to claim 1, characterized in that the additional reservoir (3) is pivotally mounted to generate the air gap (18) a variable volume.
3. Dispositif (1) selon l'une des revendications 1 ou 2, caractérisé en ce que le réservoir additionnel (3) à une forme de secteur annulaire. 3. Device (1) according to one of claims 1 or 2, characterized in that the additional reservoir (3) has an annular sector shape.
4. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le réservoir additionnel (3) comporte des parois (17) et (19) en forme de calotte sphérique et parallèles entre-elles. 4. Device (1) according to any one of the preceding claims, characterized in that the additional reservoir (3) has walls (17) and (19) in the form of spherical cap and parallel to each other.
5. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le réservoir additionnel (3) comporte des parois (17) et (19) en forme de calotte sphérique, parallèle la paroi (43) de la boîte de dégazage5. Device (1) according to any one of the preceding claims, characterized in that the additional reservoir (3) has walls (17) and (19) in the form of spherical cap, parallel to the wall (43) of the degassing box
(10) avec laquelle les parois (17) et (19) sont accolées . (10) with which the walls (17) and (19) are contiguous.
6. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le réservoir additionnel (3) est monté pivotant autour d'un axe (24) en prise dans la patte (23) de la boîte de dégazage (10) et de la patte (22) du réservoir additionnel (3) . 6. Device (1) according to any one of the preceding claims, characterized in that the additional reservoir (3) is pivotally mounted about an axis (24) engaged in the lug (23) of the degassing box ( 10) and the tab (22) of the additional reservoir (3).
7. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le réservoir additionnel (3) est équipé d'une vis de réglage ( 25 ) . 7. Device (1) according to any one of the preceding claims, characterized in that the additional reservoir (3) is equipped with a set screw (25).
8. Dispositif (1) selon la revendication 7, caractérisé en ce que la vis de réglage (25) est en prise par un filetage dans une patte (27) solidaire de la boîte de dégazage (10) et monté libre en rotation dans une patte (30) solidaire du réservoir additionnel (3) . 8. Device (1) according to claim 7, characterized in that the adjusting screw (25) is engaged by a thread in a lug (27) integral with the degassing box (10) and mounted free to rotate in a lug (30) secured to the additional reservoir (3).
9. Dispositif (1) selon l'une des revendications 7 et 8, caractérisé en ce que la vis de réglage (25) comporte un épaulement (32) et un bouton moleté (31) disposés de part et d'autre de l'épaisseur de la patte (30) solidaire du réservoir additionnel (3) . 9. Device (1) according to one of claims 7 and 8, characterized in that the adjusting screw (25) has a shoulder (32) and a knurled knob (31) arranged on either side of the thickness of the lug (30) integral with the additional reservoir (3).
10. Dispositif (1) selon l'une quelconque des revendications 7, 8 et 9, caractérisé en ce que la vis de réglage (25) est manoeuvrée par le bouton moleté (31) pour augmenter ou diminuer la distance d. 10. Device (1) according to any one of claims 7, 8 and 9, characterized in that the adjusting screw (25) is operated by the knurled knob (31) to increase or decrease the distance d.
11. Dispositif (1) selon l'une quelconque des revendications 8 et 9, caractérisé en ce que la patte (30) solidaire du réservoir additionnel (3) comporte une restriction d'épaisseur (34) sur sa section formant une charnière. 11. Device (1) according to any one of claims 8 and 9, characterized in that the lug (30) integral with the additional reservoir (3) has a thickness restriction (34) on its section forming a hinge.
12. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le réservoir additionnel (3) possède une largeur L inférieur au diamètre D de la boite de dégazage (10) . 12. Device (1) according to any one of the preceding claims, characterized in that the additional reservoir (3) has a width L less than the diameter D of the degassing box (10).
EP14713517.2A 2013-03-06 2014-02-28 Device for heating window-washing liquid in an additional tank of a vehicle Withdrawn EP2964494A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1352021A FR3002902B1 (en) 2013-03-06 2013-03-06 DEVICE FOR HEATING WASHER FLUID OF AN ADDITIONAL TANK OF A VEHICLE
PCT/FR2014/050440 WO2014135767A1 (en) 2013-03-06 2014-02-28 Device for heating window-washing liquid in an additional tank of a vehicle

Publications (1)

Publication Number Publication Date
EP2964494A1 true EP2964494A1 (en) 2016-01-13

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Application Number Title Priority Date Filing Date
EP14713517.2A Withdrawn EP2964494A1 (en) 2013-03-06 2014-02-28 Device for heating window-washing liquid in an additional tank of a vehicle

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EP (1) EP2964494A1 (en)
FR (1) FR3002902B1 (en)
WO (1) WO2014135767A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2875763B1 (en) 2004-09-30 2006-12-22 Peugeot Citroen Automobiles Sa WATER HEATING DEVICE FOR WINDSCREEN WASHERS IN A MOTOR VEHICLE
FR2899185B1 (en) * 2006-03-30 2008-06-13 Peugeot Citroen Automobiles Sa IMPROVED DEVICE FOR THE WATER HEATING OF THE WINDOW WASHERS OF A MOTOR VEHICLE
FR2918623B1 (en) * 2007-07-11 2009-10-30 Peugeot Citroen Automobiles Sa METHOD FOR MANUFACTURING A TANK FOR THE WASHING LIQUID OF GLASS SURFACES OF A MOTOR VEHICLE AND RESERVOIR OBTAINED BY THIS PROCESS
FR2918622B1 (en) * 2007-07-11 2009-10-23 Peugeot Citroen Automobiles Sa ASSEMBLY FOR HEATING WASHING WATER OF GLASS SURFACES OF A MOTOR VEHICLE.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014135767A1 *

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FR3002902B1 (en) 2015-02-27
FR3002902A1 (en) 2014-09-12

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