EP4111080A1 - Valve for a spray system - Google Patents

Valve for a spray system

Info

Publication number
EP4111080A1
EP4111080A1 EP21700596.6A EP21700596A EP4111080A1 EP 4111080 A1 EP4111080 A1 EP 4111080A1 EP 21700596 A EP21700596 A EP 21700596A EP 4111080 A1 EP4111080 A1 EP 4111080A1
Authority
EP
European Patent Office
Prior art keywords
valve
elastic membrane
washing liquid
hydraulic
elastic
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.)
Pending
Application number
EP21700596.6A
Other languages
German (de)
French (fr)
Inventor
Théophile JULLIEN
Maxime BAUDOUIN
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.)
Valeo Systemes dEssuyage SAS
Original Assignee
Valeo Systemes dEssuyage SAS
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 Valeo Systemes dEssuyage SAS filed Critical Valeo Systemes dEssuyage SAS
Publication of EP4111080A1 publication Critical patent/EP4111080A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
    • F16K39/022—Devices for relieving the pressure on the sealing faces for lift valves using balancing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B60S1/481—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
    • F16K11/24—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an electromagnetically-operated valve, e.g. for washing machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/003—Housing formed from a plurality of the same valve elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K49/00—Means in or on valves for heating or cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/7506—Valves

Definitions

  • the present invention relates to the field of systems for spraying cleaning liquid for motor vehicles and in particular the valves used in these systems.
  • Motor vehicles all have a cleaning liquid projection system to keep the vehicle's windshield clean and allow the driver's optimum view of the exterior.
  • This system can also be used for optical devices such as sensors.
  • These systems generally include a reservoir for cleaning liquid, a pump and at least one valve configured to allow or block the passage of the cleaning liquid to the various spray nozzles or nozzles.
  • valve for a washing liquid projection system, said valve comprising:
  • valve body containing a hydraulic cavity configured to be fluidly connected to a hydraulic channel of the spraying system and intended to receive the washing liquid
  • a movable element configured to be moved in the hydraulic cavity between an open position in which it allows the washing liquid to pass through the hydraulic channel and a closed position in which it blocks the passage of the washing liquid in the hydraulic channel
  • the movable element is a plunger
  • the elastic membrane comprises a rigid peripheral portion intended to be fixed to the wall of the valve and an elastic central portion configured to deform in the event of freezing of the cleaning liquid.
  • the elastic membrane is made at least in part from an elastomeric material.
  • the elastic membrane is a metal cap.
  • the elastic membrane is produced by bi-material injection.
  • the elastic membrane is molded onto the wall.
  • the elastic membrane is glued or welded to the wall.
  • the thickness of the elastic membrane is selected as a function of the pressure of the cleaning liquid in the hydraulic channel so that the elastic membrane remains undeformed over the entire pressure range. use of the valve.
  • the surface of the elastic membrane is selected so as to allow, by its deformation, an increase in the volume of the hydraulic cavity corresponding to an additional volume of the hydraulic cavity obtained by the deformation of the elastic membrane or gel washing liquid, this additional volume corresponding to at least 10% of the volume of the hydraulic cavity in the absence of deformation of the membrane.
  • FIG. 16 is a schematic representation of a cleaning liquid projection system.
  • FIG. 18 shows a schematic sectional view of a solenoid valve according to an embodiment of the present invention
  • FIG. 1 is a schematic side view of a solenoid valve according to an embodiment of the present invention.
  • FIG.4 shows a schematic sectional view of the solenoid valve of Figure 2 in another configuration
  • Embodiments and embodiments of the invention relate to a valve for a liquid projection system.
  • Figure 1 shows an exemplary embodiment of a spraying system 20 comprising a liquid reservoir 22, a pump 24, three spray nozzles 26 of cleaning liquid configured for example to spray the cleaning liquid on the screen -brise or on optical elements of a motor vehicle.
  • the projection system 20 also comprises three valves 1 to control the distribution of the cleaning liquid to the projection nozzles 26.
  • the valves 1 are connected to the reservoir 22 by supply hoses 28 and the projection fittings 26 are connected to the valves. 1 by distribution hoses 30.
  • the valves 1 are, for example, electromagnetic valves comprising a coil whose power supply makes it possible to control the movement of a plunger such as that described in the remainder of the description.
  • the invention is not limited to solenoid valves and can also be applied to other types of valves.
  • FIG. 2 represents a sectional view of a solenoid valve 1 showing the internal elements of the solenoid valve 1 and FIG. 3 represents a side view of such a solenoid valve 1.
  • the electromagnetic valve 1 comprises a valve body 3 enclosing a hydraulic cavity 5 in which is positioned a movable element in the form of the plunger 7.
  • the valve body 3 comprises a first part 3a comprising a coil 13 arranged around it. a first portion 5a of the hydraulic cavity 5 and a second part 3b in which are formed a first orifice 9 corresponding to an inlet of the fluid and a second orifice 11 (visible in FIG. 3) corresponding to an outlet of the fluid and containing a second portion 5b of the hydraulic cavity 5.
  • the first port 9 is configured to be connected to a supply hose 28 of the fluid, for example a cleaning or washing liquid.
  • the supply hose 28 is for example connected to a tank 22 of cleaning liquid via a feed pump 24 allowing the supply of cleaning liquid as in Figure 1.
  • the second port 11 is configured to be connected to a projection nozzle 26 via a distribution hose 30.
  • the electromagnetic valve 1 also comprises a hydraulic channel 15 connecting the first orifice 9 and the second orifice 11, said hydraulic channel 15 being in fluid connection with the hydraulic cavity 5 in which the plunger 7 is placed (the hydraulic channel 15 is therefore locally coincident with the second portion 5b of the hydraulic cavity 5).
  • the hydraulic channel 15 is configured to be extended on either side of the electromagnetic valve 1, in particular via the hoses 28, 30, so as to transmit the cleaning liquid from the reservoir 22 to a projection nozzle 26.
  • the plunger 7 is configured to move between an open position (not shown) in which it allows the cleaning liquid to pass between the supply hose 28 and the distribution hose 30 and a closed position (shown in FIG. 2) in which it blocks the passage of the cleaning liquid between the supply hose 28 and the distribution hose 30.
  • the plunger 7 comprises for example a first portion 7a, corresponding to a flexible end in the present case, in particular an elastomer or rubber end to allow a good seal in the closed position, the first portion 7a coming into contact with a wall of the valve body 3 in the closed position to block the passage of the liquid from cleaning through the hydraulic channel 15, that is to say between the first orifice 9 and the second orifice 11.
  • the displacement of the plunger 7 from the closed position to the open position is carried out via the supply of the coil 13 (for example above a predetermined voltage threshold).
  • An elastic stress element 17, for example a coil spring can be disposed between the valve body 3 (or an element fixed relative to the valve body 3) and the plunger 7.
  • the elastic stress element 17 is configured to force the plunger 7 in the closed position in the absence of power supply to the coil 13 (or in the event of a power supply below the predetermined voltage threshold).
  • the electromagnetic valve 1 also comprises at least one opening 32 made in a wall of the valve body 3.
  • a single opening 32 is arranged so as to simplify the manufacture of the valve 1, but it is also possible to provide several openings 32.
  • the opening 32 is preferably formed in the second portion 5b of the hydraulic cavity 5.
  • the opening 32 is closed by an elastic membrane 21 configured to deform in the event of freezing of the washing liquid in the hydraulic cavity 5.
  • Figure 4 shows the valve 1 when the cleaning liquid is frozen with the elastic membrane. 21 which is deformed (with respect to its initial shape shown in FIG. 2) by the expansion due to the gel.
  • the opening 32 has for example a rectangular shape as shown in Figure 3 but other shapes are also possible such as for example a circular shape.
  • the size of the opening 32 can be chosen according to the volume of the hydraulic cavity 5 so that the elastic diaphragm 21 is large enough to be able to contain the excess volume in the event of freezing of the cleaning liquid in the hydraulic cavity 5.
  • the additional volume created by the deformation of the elastic membrane 21 corresponds for example to at least 10% of the volume of the hydraulic cavity 5.
  • the elastic membrane 21 is for example made of plastic material, such as in particular a thermoplastic elastomer, but other elastic materials can also be used such as thermosetting elastomers; thermoplastic or thermosetting polymers other than elastomers; or else metals or alloys, in particular in the form of a metal cover.
  • plastic material such as in particular a thermoplastic elastomer
  • other elastic materials can also be used such as thermosetting elastomers; thermoplastic or thermosetting polymers other than elastomers; or else metals or alloys, in particular in the form of a metal cover.
  • thermosetting elastomers thermoplastic or thermosetting polymers other than elastomers
  • metals or alloys in particular in the form of a metal cover.
  • different techniques can be used for fixing the elastic membrane 21 on the valve body 3.
  • the elastic membrane 21 can for example be glued, welded or overmolded. A two-material injection can also be carried out so as to obtain a peripheral part forming a rigid outline configured to come to
  • the thickness of the elastic diaphragm 21 can be chosen as a function on the one hand of the material chosen for the diaphragm and on the other hand of the operating pressure range of the valve 1 so that the elastic diaphragm 21 is not deformed during normal use of valve 1, i.e. in the absence of freezing of the cleaning liquid and use within the intended pressure range (in general a valve is provided in the event of overpressure in the hydraulic circuit of the spraying system 20).
  • the elastic membrane 21 thus makes it possible to prevent any damage to the valve body 3 or to the elements present in the hydraulic cavity such as the plunger 7 in the event of freezing of the cleaning liquid.
  • the valve is operational again when the temperature rises without the need for manual action to make it operational.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Nozzles (AREA)
  • Fluid-Driven Valves (AREA)
  • Valve Housings (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

The present invention relates to a valve (1) of a system for spraying a washing liquid, said valve (1) comprising: • - a valve body (3) enclosing a hydraulic cavity (5) which is configured to be fluidically connected to a hydraulic conduit (15) of the spray system and is intended to receive the washing liquid, • - a mobile element (7) which is configured to be moved in the hydraulic cavity (5) between an open position, in which it lets the washing liquid pass into the hydraulic conduit (15), and a closed position, in which it blocks the passage of the washing liquid into the hydraulic conduit (15), characterized in that the valve (1) also comprises at least one opening (32) provided in the wall, said opening (32) being closed by an elastic membrane (21) which is configured to be deformed if the washing liquid freezes in the hydraulic cavity (5).

Description

Description Description
Titre de l’invention : VANNE POUR SYSTEME DE PROJECTION Title of the invention: VALVE FOR PROJECTION SYSTEM
[1]La présente invention concerne le domaine des systèmes de projection de liquide nettoyant des véhicules automobiles et en particulier les vannes utilisées dans ces systèmes. [1] The present invention relates to the field of systems for spraying cleaning liquid for motor vehicles and in particular the valves used in these systems.
[2]Les véhicules automobiles possèdent tous un système de projection de liquide de nettoyage pour maintenir le pare-brise du véhicule propre et permettre une vision optimale du conducteur vers l’extérieur. Ce système peut également être utilisé pour des dispositifs optiques tels que des capteurs. [2] Motor vehicles all have a cleaning liquid projection system to keep the vehicle's windshield clean and allow the driver's optimum view of the exterior. This system can also be used for optical devices such as sensors.
[3]Ces systèmes comprennent généralement un réservoir de liquide de nettoyage, une pompe et au moins une vanne configurée pour autoriser ou bloquer le passage du liquide de nettoyage vers les différents embouts de projection ou gicleurs. [3] These systems generally include a reservoir for cleaning liquid, a pump and at least one valve configured to allow or block the passage of the cleaning liquid to the various spray nozzles or nozzles.
[4]L’un des problèmes avec les vannes hydrauliques placées dans le circuit hydraulique des systèmes de projection est le risque de dysfonctionnement des vannes lié au givrage des vannes. De plus, en cas de températures très basses, le liquide de nettoyage présent dans la vanne peut geler ce qui peut alors conduire à une détérioration de la vanne du fait de la dilatation de l’eau lorsqu’elle gèle, provoquant une panne du système de projection de liquide de nettoyage. [4] One of the problems with hydraulic valves placed in the hydraulic circuit of spraying systems is the risk of valve malfunction due to valve icing. In addition, in case of very low temperatures, the cleaning liquid present in the valve can freeze which can then lead to deterioration of the valve due to the expansion of the water when it freezes, causing a failure of the system. spraying cleaning liquid.
[5] Afin d’éviter une telle détérioration des vannes en cas de gel, il convient donc de trouver une solution permettant de protéger les vannes électromagnétiques dans les systèmes de projection de liquide de nettoyage des véhicules automobiles en cas de gel. [5] In order to avoid such deterioration of the valves in the event of frost, a solution should therefore be found to protect the electromagnetic valves in the systems for spraying cleaning fluid in motor vehicles in the event of frost.
[6]A cet effet, il est proposé une vanne d’un système de projection d’un liquide de lavage, ladite vanne comprenant : [6] For this purpose, a valve is proposed for a washing liquid projection system, said valve comprising:
- un corps de vanne renfermant une cavité hydraulique configurée pour être reliée fluidiquement à un canal hydraulique du système de projection et destiné à recevoir le liquide de lavage, - a valve body containing a hydraulic cavity configured to be fluidly connected to a hydraulic channel of the spraying system and intended to receive the washing liquid,
- un élément mobile configuré pour être déplacé dans la cavité hydraulique entre une position d’ouverture dans laquelle il laisse passer le liquide de lavage dans le canal hydraulique et une position de fermeture dans laquelle il bloque le passage du liquide de lavage dans le canal hydraulique, - a movable element configured to be moved in the hydraulic cavity between an open position in which it allows the washing liquid to pass through the hydraulic channel and a closed position in which it blocks the passage of the washing liquid in the hydraulic channel,
- au moins une ouverture ménagée dans sa paroi, ladite ouverture étant fermée par une membrane élastique configurée pour se déformer en cas de gel du liquide de lavage dans la cavité hydraulique. - at least one opening made in its wall, said opening being closed by an elastic membrane configured to deform in the event of freezing of the washing liquid in the hydraulic cavity.
[7]Selon un mode de réalisation, l’élément mobile est un plongeur. [7] According to one embodiment, the movable element is a plunger.
[8]Selon un mode de réalisation, la membrane élastique comprend une portion périphérique rigide destinée à être fixée sur la paroi de la vanne et une portion centrale élastique configurée pour se déformée en cas de gel du liquide de nettoyage. [8] According to one embodiment, the elastic membrane comprises a rigid peripheral portion intended to be fixed to the wall of the valve and an elastic central portion configured to deform in the event of freezing of the cleaning liquid.
[9]Selon un autre mode de réalisation, la membrane élastique est réalisée au moins en partie en matériau élastomère. [9] According to another embodiment, the elastic membrane is made at least in part from an elastomeric material.
[10]Selon un autre mode de réalisation, la membrane élastique est un opercule métallique. [10] According to another embodiment, the elastic membrane is a metal cap.
[1 l]Selon un autre mode de réalisation, la membrane élastique est réalisée par injection bi-matière. [1 l] According to another embodiment, the elastic membrane is produced by bi-material injection.
[12]Selon un autre mode de réalisation, la membrane élastique est surmoulée sur la paroi. [12] According to another embodiment, the elastic membrane is molded onto the wall.
[13]Selon un autre mode de réalisation, la membrane élastique est collée ou soudée sur la paroi. [13] According to another embodiment, the elastic membrane is glued or welded to the wall.
[14]Selon un autre mode de réalisation, l’épaisseur de la membrane élastique est sélectionnée en fonction de la pression du liquide de nettoyage dans le canal hydraulique de sorte que la membrane élastique reste non déformée sur l’ensemble de la plage de pressions d’utilisation de la vanne. [14] According to another embodiment, the thickness of the elastic membrane is selected as a function of the pressure of the cleaning liquid in the hydraulic channel so that the elastic membrane remains undeformed over the entire pressure range. use of the valve.
[15]Selon un autre mode de réalisation, la surface de la membrane élastique est sélectionnée de manière à permettre, par sa déformation, une augmentation du volume de la cavité hydraulique correspondant à un volume supplémentaire de la cavité hydraulique obtenu par la déformation de la membrane élastique ors du gel du liquide de lavage, ce volume supplémentaire correspondant à au moins 10 % du volume de la cavité hydraulique en l’absence de déformation de la membrane. [15] According to another embodiment, the surface of the elastic membrane is selected so as to allow, by its deformation, an increase in the volume of the hydraulic cavity corresponding to an additional volume of the hydraulic cavity obtained by the deformation of the elastic membrane or gel washing liquid, this additional volume corresponding to at least 10% of the volume of the hydraulic cavity in the absence of deformation of the membrane.
[16]D’autres caractéristiques et avantages de l’invention apparaîtront plus clairement à la lecture de la description suivante, donnée à titre d’exemple illustratif et non limitatif et des dessins annexés parmi lesquels : [17][Fig 1] représente une représentation schématique d’un système de projection de liquide de nettoyage. [16] Other characteristics and advantages of the invention will emerge more clearly on reading the following description, given by way of illustrative and non-limiting example and the appended drawings, among which: [17] [Fig 1] is a schematic representation of a cleaning liquid projection system.
[18] [Fig 2] représente une vue schématique en coupe d’une électrovanne selon un mode de réalisation de la présente invention; [18] [Fig 2] shows a schematic sectional view of a solenoid valve according to an embodiment of the present invention;
[19][Fig 3] représente une vue schématique de côté d’une électrovanne selon un mode de réalisation de la présente invention; [19] [Fig 3] is a schematic side view of a solenoid valve according to an embodiment of the present invention;
[20] [Fig.4] représente une vue schématique en coupe de l’électrovanne de la figure 2 dans une autre configuration; [20] [Fig.4] shows a schematic sectional view of the solenoid valve of Figure 2 in another configuration;
[21]Dans ces figures, les éléments identiques portent les mêmes références. [21] In these figures, identical elements bear the same references.
[22]Les réalisations suivantes sont des exemples. Bien que la description se réfère à un ou plusieurs modes de réalisation, ceci ne signifie pas nécessairement que chaque référence concerne le même mode de réalisation ou que les caractéristiques s'appliquent seulement à un seul mode de réalisation. De simples caractéristiques de différents modes de réalisation peuvent également être combinées ou interchangées pour fournir d'autres réalisations. [22] The following realizations are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment or that the characteristics apply only to one embodiment. Simple features of different embodiments can also be combined or interchanged to provide other embodiments.
[23]Des modes de mise en œuvre et de réalisation de l’invention concernent une vanne pour un système de projection de liquide. [23] Embodiments and embodiments of the invention relate to a valve for a liquid projection system.
[24]La figure 1 représente un exemple de réalisation d’un système de projection 20 comprenant un réservoir de liquide 22, une pompe 24, trois embouts de projection 26 de liquide de nettoyage configurés par exemple pour pulvériser le liquide de nettoyage sur le pare-brise ou sur des éléments optiques d’un véhicule automobile. Le système de projection 20 comprend également trois vannes 1 pour contrôler la distribution du liquide de nettoyage vers les embouts de projection 26. Les vannes 1 sont reliées au réservoir 22 par des durites d’approvisionnement 28 et les embouts de projection 26 sont reliés aux vannes 1 par des durites de distribution 30. [24] Figure 1 shows an exemplary embodiment of a spraying system 20 comprising a liquid reservoir 22, a pump 24, three spray nozzles 26 of cleaning liquid configured for example to spray the cleaning liquid on the screen -brise or on optical elements of a motor vehicle. The projection system 20 also comprises three valves 1 to control the distribution of the cleaning liquid to the projection nozzles 26. The valves 1 are connected to the reservoir 22 by supply hoses 28 and the projection fittings 26 are connected to the valves. 1 by distribution hoses 30.
[25]Les vannes 1 sont par exemple des vannes électromagnétiques comprenant une bobine dont l’alimentation permet de contrôler le déplacement d’un plongeur comme celle décrite dans la suite de la description. Cependant, l’invention ne se limite pas à des vannes électromagnétiques et peut aussi être appliquée à d’autres types de vannes. [25] The valves 1 are, for example, electromagnetic valves comprising a coil whose power supply makes it possible to control the movement of a plunger such as that described in the remainder of the description. However, the invention is not limited to solenoid valves and can also be applied to other types of valves.
[26]La figure 2 représente une vue en coupe d’une vanne électromagnétique 1 montrant les éléments internes de la vanne électromagnétique 1 et la figure 3 représente une vue de côté d’une telle vanne électromagnétique 1. [27]La vanne électromagnétique 1 comprend un corps de vanne 3 renfermant une cavité hydraulique 5 dans laquelle est positionné un élément mobile sous le forme du plongeur 7. Le corps de vanne 3 comprend une première partie 3a comprenant une bobine 13 disposée autour d’une première portion 5a de la cavité hydraulique 5 et une deuxième partie 3b dans laquelle sont ménagés un premier orifice 9 correspondant à un orifice d’entrée du fluide et un deuxième orifice 11 (visible sur la figure 3) correspondant à un orifice de sortie du fluide et renfermant une deuxième portion 5b de la cavité hydraulique 5. [26] FIG. 2 represents a sectional view of a solenoid valve 1 showing the internal elements of the solenoid valve 1 and FIG. 3 represents a side view of such a solenoid valve 1. [27] The electromagnetic valve 1 comprises a valve body 3 enclosing a hydraulic cavity 5 in which is positioned a movable element in the form of the plunger 7. The valve body 3 comprises a first part 3a comprising a coil 13 arranged around it. a first portion 5a of the hydraulic cavity 5 and a second part 3b in which are formed a first orifice 9 corresponding to an inlet of the fluid and a second orifice 11 (visible in FIG. 3) corresponding to an outlet of the fluid and containing a second portion 5b of the hydraulic cavity 5.
[28]Le premier orifice 9 est configuré pour être raccordé à une durite d’approvisionnement 28 du fluide, par exemple un liquide de nettoyage ou de lavage. La durite d’approvisionnement 28 est par exemple reliée à un réservoir 22 de liquide de nettoyage via une pompe d’alimentation 24 permettant l’approvisionnement du liquide de nettoyage comme sur la figure 1. [28] The first port 9 is configured to be connected to a supply hose 28 of the fluid, for example a cleaning or washing liquid. The supply hose 28 is for example connected to a tank 22 of cleaning liquid via a feed pump 24 allowing the supply of cleaning liquid as in Figure 1.
[29]Le deuxième orifice 11 est configuré pour être raccordé à un embout de projection 26 via une durite de distribution 30. [29] The second port 11 is configured to be connected to a projection nozzle 26 via a distribution hose 30.
[30]La vanne électromagnétique 1 comprend également un canal hydraulique 15 reliant le premier orifice 9 et le deuxième orifice 11, ledit canal hydraulique 15 étant en relation fluidique avec la cavité hydraulique 5 dans laquelle est disposé le plongeur 7 (le canal hydraulique 15 est donc confondu localement avec la deuxième portion 5b de la cavité hydraulique 5). Le canal hydraulique 15 est configuré pour être prolongé de part et d’autre de la vanne électromagnétique 1, notamment via les durites 28, 30, de manière à transmettre le liquide de nettoyage depuis le réservoir 22 jusqu’à un embout de projection 26. [30] The electromagnetic valve 1 also comprises a hydraulic channel 15 connecting the first orifice 9 and the second orifice 11, said hydraulic channel 15 being in fluid connection with the hydraulic cavity 5 in which the plunger 7 is placed (the hydraulic channel 15 is therefore locally coincident with the second portion 5b of the hydraulic cavity 5). The hydraulic channel 15 is configured to be extended on either side of the electromagnetic valve 1, in particular via the hoses 28, 30, so as to transmit the cleaning liquid from the reservoir 22 to a projection nozzle 26.
[31]Le plongeur 7 est configuré pour se déplacer entre une position d’ouverture (non représentée) dans laquelle il laisse passer le liquide de nettoyage entre la durite d’approvisionnement 28 et la durite de distribution 30 et une position de fermeture (représentée sur la figure 2) dans laquelle il bloque le passage du liquide de nettoyage entre la durite d’approvisionnement 28 et la durite de distribution 30. [31] The plunger 7 is configured to move between an open position (not shown) in which it allows the cleaning liquid to pass between the supply hose 28 and the distribution hose 30 and a closed position (shown in FIG. 2) in which it blocks the passage of the cleaning liquid between the supply hose 28 and the distribution hose 30.
[32]Le plongeur 7 comprend par exemple une première portion 7a, correspondant à une extrémité souple dans le cas présent, notamment une extrémité en élastomère ou en caoutchouc pour permettre une bonne étanchéité en position de fermeture, la première portion 7a venant en contact avec une paroi du corps de vanne 3 en position de fermeture pour bloquer le passage du liquide de nettoyage à travers le canal hydraulique 15, c’est-à-dire entre le premier orifice 9 et le deuxième orifice 11. Le déplacement du plongeur 7 de la position de fermeture à la position d’ouverture est réalisé via l’alimentation de la bobine 13 (par exemple au-dessus d’un seuil de tension prédéterminé). Un élément de contrainte élastique 17, par exemple un ressort hélicoïdal, peut être disposé entre le corps de vanne 3 (ou un élément fixe par rapport au corps de vanne 3) et le plongeur 7. L’élément de contrainte élastique 17 est configuré pour contraindre le plongeur 7 en position de fermeture en l’absence d’alimentation de la bobine 13 (ou en cas d’alimentation inférieure au seuil de tension prédéterminé). [32] The plunger 7 comprises for example a first portion 7a, corresponding to a flexible end in the present case, in particular an elastomer or rubber end to allow a good seal in the closed position, the first portion 7a coming into contact with a wall of the valve body 3 in the closed position to block the passage of the liquid from cleaning through the hydraulic channel 15, that is to say between the first orifice 9 and the second orifice 11. The displacement of the plunger 7 from the closed position to the open position is carried out via the supply of the coil 13 (for example above a predetermined voltage threshold). An elastic stress element 17, for example a coil spring, can be disposed between the valve body 3 (or an element fixed relative to the valve body 3) and the plunger 7. The elastic stress element 17 is configured to force the plunger 7 in the closed position in the absence of power supply to the coil 13 (or in the event of a power supply below the predetermined voltage threshold).
[33]De plus, comme représenté sur les figures 4 et 5, pour éviter un endommagement du corps de vanne 3 lorsque le liquide de nettoyage à l’intérieur de la cavité hydraulique 5 commence à geler, par exemple lorsque les températures extérieures sont inférieures à 3 °C (ce qui pourrait cependant varier en fonction de la composition du liquide de nettoyage), la vanne électromagnétique 1 comprend également au moins une ouverture 32 ménagée dans une paroi du corps de vanne 3. De préférence, une seule ouverture 32 est ménagée de manière à simplifier la fabrication de la vanne 1 mais il est également possible de ménager plusieurs ouvertures 32. L’ouverture 32 est de préférence ménagée dans la deuxième portion 5b de la cavité hydraulique 5. [33] In addition, as shown in Figures 4 and 5, to prevent damage to the valve body 3 when the cleaning liquid inside the hydraulic cavity 5 begins to freeze, for example when the outside temperatures are lower. at 3 ° C (which could however vary depending on the composition of the cleaning liquid), the electromagnetic valve 1 also comprises at least one opening 32 made in a wall of the valve body 3. Preferably, a single opening 32 is arranged so as to simplify the manufacture of the valve 1, but it is also possible to provide several openings 32. The opening 32 is preferably formed in the second portion 5b of the hydraulic cavity 5.
[34]L’ ouverture 32 est fermée par une membrane élastique 21 configurée pour se déformer en cas de gel du liquide de lavage dans la cavité hydraulique 5. La figure 4 représente la vanne 1 lorsque le liquide de nettoyage est gelé avec la membrane élastique 21 qui est déformée (par rapport à sa forme initiale représentée sur la figure 2) par la dilatation due au gel. L’ouverture 32 a par exemple une forme rectangulaire comme représentée sur la figure 3 mais d’autres formes sont également possibles comme par exemple une forme circulaire. La taille de l’ouverture 32 peut être choisie en fonction du volume de la cavité hydraulique 5 de manière à ce que la membrane élastique 21 soit assez grande pour pouvoir contenir le volume excédant en cas de gel du liquide de nettoyage dans la cavité hydraulique 5. Le volume supplémentaire créé par la déformation de la membrane élastique 21 correspond par exemple à au moins 10 % du volume de la cavité hydraulique 5. [34] The opening 32 is closed by an elastic membrane 21 configured to deform in the event of freezing of the washing liquid in the hydraulic cavity 5. Figure 4 shows the valve 1 when the cleaning liquid is frozen with the elastic membrane. 21 which is deformed (with respect to its initial shape shown in FIG. 2) by the expansion due to the gel. The opening 32 has for example a rectangular shape as shown in Figure 3 but other shapes are also possible such as for example a circular shape. The size of the opening 32 can be chosen according to the volume of the hydraulic cavity 5 so that the elastic diaphragm 21 is large enough to be able to contain the excess volume in the event of freezing of the cleaning liquid in the hydraulic cavity 5. The additional volume created by the deformation of the elastic membrane 21 corresponds for example to at least 10% of the volume of the hydraulic cavity 5.
[35]La membrane élastique 21 est par exemple en matériau plastique, tel qu’en particulier un élastomère thermoplastique, mais d’autres matériaux élastiques peuvent également être utilisés tels que des élastomères thermodurcissables ; des polymères thermoplastiques ou thermodurcissables autre que des élastomères ; ou bien des métaux ou alliages, en particulier en forme d’un opercule métallique. Pour assurer une bonne étanchéité au niveau de la membrane élastique 21, différentes techniques peuvent être utilisées pour la fixation de la membrane élastique 21 sur la corps de vanne 3. La membrane élastique 21 peut par exemple être collée, soudée ou surmoulée. Une injection bi-matière peut également être réalisée de manière à obtenir une partie périphérique formant un contour rigide configuré pour venir se fixer sur la paroi du corps de vanne 3 et une partie centrale en matériau souple et élastique. L’épaisseur de la membrane élastique 21 peut être choisie en fonction d’une part du matériau choisi pour la membrane et d’autre part de la plage de pression d’utilisation de la vanne 1 de sorte que la membrane élastique 21 ne soit pas déformée lors d’une utilisation normale de la vanne 1, c’est-à-dire en l’absence de gel du liquide de nettoyage et d’une utilisation dans la plage de pression prévue (en général une soupape est prévue en cas de surpression dans le circuit hydraulique du système de projection 20). [35] The elastic membrane 21 is for example made of plastic material, such as in particular a thermoplastic elastomer, but other elastic materials can also be used such as thermosetting elastomers; thermoplastic or thermosetting polymers other than elastomers; or else metals or alloys, in particular in the form of a metal cover. To ensure a good seal at the level of the elastic membrane 21, different techniques can be used for fixing the elastic membrane 21 on the valve body 3. The elastic membrane 21 can for example be glued, welded or overmolded. A two-material injection can also be carried out so as to obtain a peripheral part forming a rigid outline configured to come to be fixed on the wall of the valve body 3 and a central part in flexible and elastic material. The thickness of the elastic diaphragm 21 can be chosen as a function on the one hand of the material chosen for the diaphragm and on the other hand of the operating pressure range of the valve 1 so that the elastic diaphragm 21 is not deformed during normal use of valve 1, i.e. in the absence of freezing of the cleaning liquid and use within the intended pressure range (in general a valve is provided in the event of overpressure in the hydraulic circuit of the spraying system 20).
[36]Ainsi, en fonctionnement, lorsque le liquide de nettoyage présent dans la cavité hydraulique 5 de la vanne 1 vient à geler du fait de températures très basses, par exemple inférieures à -10°C, le surplus de volume pris par le liquide de nettoyage gelé du fait de sa dilatation entraîne un effort sur les parois du corps de vanne 3. Cet effort entraîne une déformation de la membrane élastique 21 comme représenté sur la figure 4. En effet, la membrane élastique 21 étant moins rigide que les autres portions des parois du corps de vanne 3, c’est la membrane élastique 21 qui est déformée. Lorsque la température augmente à nouveau, la glace de liquide de nettoyage fond et revient à l’état liquide. La membrane élastique 21 reprend alors sa forme initiale. La membrane élastique 21 permet ainsi d’éviter toute détérioration du corps de vanne 3 ou des éléments présents dans la cavité hydraulique tel que le plongeur 7 en cas de gel du liquide de nettoyage. De plus, la vanne est à nouveau opérationnelle lorsque la température remonte sans nécessité d’action manuelle pour la rendre opérationnelle. [36] Thus, in operation, when the cleaning liquid present in the hydraulic cavity 5 of the valve 1 freezes due to very low temperatures, for example below -10 ° C, the excess volume taken up by the liquid frozen cleaning due to its expansion causes a force on the walls of the valve body 3. This force causes a deformation of the elastic diaphragm 21 as shown in Figure 4. Indeed, the elastic diaphragm 21 being less rigid than the others portions of the walls of the valve body 3, it is the elastic membrane 21 which is deformed. When the temperature rises again, the ice washer fluid melts and returns to the liquid state. The elastic membrane 21 then returns to its initial shape. The elastic membrane 21 thus makes it possible to prevent any damage to the valve body 3 or to the elements present in the hydraulic cavity such as the plunger 7 in the event of freezing of the cleaning liquid. In addition, the valve is operational again when the temperature rises without the need for manual action to make it operational.

Claims

Revendications Claims
[Revendication 1] Vanne (1) d’un système de projection (20) d’un liquide de lavage, ladite vanne (1) comprenant : [Claim 1] Valve (1) of a washing liquid projection system (20), said valve (1) comprising:
- un corps de vanne (3) renfermant une cavité hydraulique (5) configurée pour être reliée fluidiquement à un canal hydraulique- a valve body (3) enclosing a hydraulic cavity (5) configured to be fluidly connected to a hydraulic channel
(15) du système de projection (20) et destiné à recevoir le liquide de lavage, (15) of the projection system (20) and intended to receive the washing liquid,
- un élément mobile (7) configuré pour être déplacé dans la cavité hydraulique (5) entre une position d’ouverture dans laquelle il laisse passer le liquide de lavage dans le canal hydraulique (15) et une position de fermeture dans laquelle il bloque le passage du liquide de lavage dans le canal hydraulique (15), caractérisé en ce que la vanne (1) comprend également au moins une ouverture (32) ménagée dans sa paroi, ladite ouverture (32) étant fermée par une membrane élastique (21) configurée pour se déformer en cas de gel du liquide de lavage dans la cavité hydraulique (5). - a movable element (7) configured to be moved in the hydraulic cavity (5) between an open position in which it allows the washing liquid to pass through the hydraulic channel (15) and a closed position in which it blocks the passage of the washing liquid in the hydraulic channel (15), characterized in that the valve (1) also comprises at least one opening (32) made in its wall, said opening (32) being closed by an elastic membrane (21) configured to deform in the event of freezing of the washing liquid in the hydraulic cavity (5).
[Revendication 2] Vanne (1) selon la revendication 1 dans lequel l’élément mobile (7) est un plongeur. [Revendication 3] Vanne (1) selon la revendication 1 dans lequel la membrane élastique (21) comprend une portion périphérique rigide destinée à être fixée sur la paroi de la vanne (1) et une portion centrale élastique configurée pour se déformée en cas de gel du liquide de nettoyage. [Revendication 4] Vanne (1) selon l’une des revendications 1 à 3 dans laquelle la membrane élastique (21) est réalisée au moins en partie en matériau élastomère. [Claim 2] A valve (1) according to claim 1 wherein the movable member (7) is a plunger. [Claim 3] A valve (1) according to claim 1 in which the elastic diaphragm (21) comprises a rigid peripheral portion intended to be fixed to the wall of the valve (1) and an elastic central portion configured to deform in the event of gel cleaning fluid. [Claim 4] Valve (1) according to one of claims 1 to 3 in which the elastic membrane (21) is made at least partly of elastomeric material.
[Revendication 5] Vanne (1) selon l’une des revendications 1 à 3 dans laquelle la membrane élastique (21) est un opercule métallique. [Revendication 6] Vanne (1) selon l’une des revendications précédentes dans laquelle la membrane élastique (21) est réalisée par injection bi- matière. [Revendication 7] Vanne (1) selon l’une des revendications 1 à 6 dans laquelle la membrane élastique (21) est surmoulée sur la paroi. [Claim 5] Valve (1) according to one of claims 1 to 3 in which the elastic membrane (21) is a metal cap. [Claim 6] Valve (1) according to one of the preceding claims, in which the elastic membrane (21) is produced by bi-material injection. [Claim 7] Valve (1) according to one of claims 1 to 6 in which the elastic membrane (21) is overmolded on the wall.
[Revendication 8] Vanne (1) selon l’une des revendications 1 à 6 dans laquelle la membrane élastique (21) est collée ou soudée sur la paroi. [Revendication 9] Vanne (1) selon l’une des revendications précédentes dans laquelle l’épaisseur de la membrane élastique (21) est sélectionnée en fonction de la pression du liquide de nettoyage dans le canal hydraulique (15) de sorte que la membrane élastique (21) reste non déformée sur l’ensemble de la plage de pressions d’utilisation de la vanne (1). [Claim 8] Valve (1) according to one of claims 1 to 6 in which the elastic membrane (21) is glued or welded to the wall. [Claim 9] Valve (1) according to one of the preceding claims in which the thickness of the elastic membrane (21) is selected according to the pressure of the cleaning liquid in the hydraulic channel (15) so that the membrane elastic (21) remains undeformed over the entire operating pressure range of the valve (1).
[Revendication 10] Vanne (1) selon l’une des revendications précédentes dans laquelle la surface de la membrane élastique (21) est sélectionnée de manière à permettre, par sa déformation, une augmentation du volume de la cavité hydraulique correspondant à un volume supplémentaire de la cavité hydraulique (5) obtenu par la déformation de la membrane élastique (21) lors du gel du liquide de lavage, ce volume supplémentaire correspondant à au moins 10 % du volume de la cavité hydraulique (5). [Claim 10] Valve (1) according to one of the preceding claims in which the surface of the elastic membrane (21) is selected so as to allow, by its deformation, an increase in the volume of the hydraulic cavity corresponding to an additional volume of the hydraulic cavity (5) obtained by the deformation of the elastic membrane (21) when the washing liquid freezes, this additional volume corresponding to at least 10% of the volume of the hydraulic cavity (5).
EP21700596.6A 2020-02-28 2021-01-19 Valve for a spray system Pending EP4111080A1 (en)

Applications Claiming Priority (2)

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FR2002040A FR3107683B1 (en) 2020-02-28 2020-02-28 VALVE FOR PROJECTION SYSTEM
PCT/EP2021/050999 WO2021170312A1 (en) 2020-02-28 2021-01-19 Valve for a spray system

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EP (1) EP4111080A1 (en)
JP (1) JP2023516626A (en)
KR (1) KR20220148231A (en)
CN (1) CN115335623A (en)
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FR3135432A1 (en) * 2022-05-10 2023-11-17 Ford Global Technologies, Llc SENSOR CLEANING KIT WITH SOLENOID
FR3141497A1 (en) * 2022-11-02 2024-05-03 Valeo Systemes D'essuyage Valve of a system for projecting a cleaning liquid comprising means of compensation in the event of freezing

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US660382A (en) * 1899-04-05 1900-10-23 Frank Lambert Safety device for hydraulic apparatus.
US6939918B2 (en) * 2000-03-24 2005-09-06 Advanced Elastomer Systems L.P. Thermoplastic elastomers having improved low temperature properties
DE10361867B4 (en) * 2003-12-29 2006-05-24 Hydraulik-Ring Gmbh exhaust treatment device
DE102004025062B4 (en) * 2004-05-18 2006-09-14 Hydraulik-Ring Gmbh Freezer-compatible metering valve
ITMI20072361A1 (en) * 2007-12-18 2009-06-19 Spluga Di Andrea Cagnacci & C WATER DEVICE
US20190359178A1 (en) * 2018-05-22 2019-11-28 Continental Automotive Systems, Inc. Vehicle camera and sensor washer manifold assembly
US11745703B2 (en) * 2021-03-23 2023-09-05 Ford Global Technologies, Llc Assembly for sensor cleaning with solenoid
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US11767929B2 (en) * 2021-03-26 2023-09-26 Ford Global Technologies, Llc Assembly for sensor cleaning with solenoid

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KR20220148231A (en) 2022-11-04
FR3107683A1 (en) 2021-09-03
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JP2023516626A (en) 2023-04-20
WO2021170312A1 (en) 2021-09-02
CN115335623A (en) 2022-11-11

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