assembly of solenoid valves for automotive vehicles

Abstract

The invention relates to an assembly of solenoid valves for a sensor cleaning system in a motor vehicle. The assembly comprises a plurality of hydraulic blocks, each incorporating a solenoid valve. Each hydraulic block includes an electrical portion housed in a casing and a hydraulic portion (12) comprising an outlet sleeve (122) located at the lower end of the casing. The assembly includes a single distribution conduit (121) fluidly coupling the hydraulic portion (12) of all the solenoid valves. The distribution conduit (121) includes at least one flow disruptor (13) projecting inward toward the interior of the distribution conduit (121) to oppose hydraulic flow within said distribution conduit (121) and to make it more turbulent. Figure to be published with the abstract: Fig. 4

Description

Title of the invention: set of solenoid valves for a motor vehicle

[0001] The technical context of the present invention is that of hydraulic cleaning systems on board motor vehicles and which make it possible to clean specific surfaces located opposite sensors. More particularly, the invention relates to a set of solenoid valves and to a cleaning system comprising such a set.

[0002] Modern motor vehicles now incorporate a very large number of devices that improve the safety of the driver and passengers, by improving the detection or perception of the road scene located in front of or around the motor vehicle. For example, the use of devices comprising one or more sensors, such as radars or reversing cameras for example, is known.

[0003] In order to maintain proper operation of these sensors over time, systems for cleaning these sensors have also been implemented. These cleaning systems typically comprise a system for distributing and spraying a cleaning liquid intended for maintaining the sensors and the glass surfaces located opposite. This distribution system is managed by means of solenoid valves which, connected to an electronic control circuit, open or close accordingly in order to supply a spray nozzle associated with one of the sensors to be cleaned.

[0004] However, the number of sensors to be cleaned within a motor vehicle is constantly increasing due to the evolution of automotive technology, this leads to an increase in the number and / or complexity of the cleaning liquid distribution systems, pressure sources and / or solenoid valves responsible for supplying fluid conduits which channel the cleaning fluid towards the sensors.

[0005] The multiplicity of sensors and the increasing complexity of the associated cleaning systems and the distribution system lead to numerous problems on motor vehicles, among which we can cite the bulk, that is to say the difficulty in housing such cleaning systems or in passing the fluid conduits of the distribution system in an already very constrained environment. Another known problem lies in the increase in the weight carried on motor vehicles and which results from the multiplicity of fluid conduits and other solenoid valves. Finally, another known problem is, of course, the increase in production costs.

[0006] To solve this technical problem, the use of several solenoid valve blocks associated with each other and which are all connected to a single cleaning liquid reservoir via a single fluid conduit is known. Downstream of this installation, each solenoid valve is fluidically connected to one or more cleaning systems in order to control the cleaning of one or more associated sensors. Thus, such known solenoid valve assemblies make it possible to reduce the necessary space requirement and to make numerous design and manufacturing savings, facilitating their integration into motor vehicles.

[0007] Generally speaking, such solenoid valve assemblies comprise a plurality of solenoid valves, each solenoid valve comprising an electrical part housed in a housing and a hydraulic part comprising an outlet sleeve located at a lower end of the housing, the assembly comprising a single distribution conduit fluidly coupling the hydraulic part of all the solenoid valves. In other words, such known solenoid valve assemblies bring together and secure several solenoid valves in a block forming a subassembly dedicated to the cleaning liquid distribution function.

[0008] Consequently, for optimal operation, it is necessary for the cleaning liquid circulating in the distribution conduit to be able to be directed towards one or more fluid conduits located downstream of the solenoid valve assembly, due to the opening of one or more of the solenoid valves. However, undesired pressure losses are regularly observed on second solenoid valves located further downstream of first solenoid valves located upstream, relative to the direction of flow of the cleaning liquid in the distribution conduit. More generally, difficulties are observed in directing the cleaning liquid circulating in the distribution conduit towards the outlet sleeve of one or more of the solenoid valves. Obviously, this situation is not desired.

[0009] The object of the present invention is to propose a new set of solenoid valves in order to respond at least to a large extent to the preceding problems and to further lead to other advantages.

[0010] Another object of the invention is to facilitate the flow of cleaning liquid to the various solenoid valves of such a set of solenoid valves.

[0011] Another aim of the invention is to improve the performance of such a set of solenoid valves and to reduce the pressure losses on each fluid conduit located downstream of said set.

[0012] According to a first aspect of the invention, at least one of the aforementioned objectives is achieved with a set of solenoid valves for a sensor cleaning system of a motor vehicle, the set comprising a plurality of solenoid valves, each solenoid valve comprising an electrical part housed in a housing and a hy hydraulic comprising an outlet sleeve located at a lower end of the housing, the assembly further comprising a single distribution conduit fluidly coupling the hydraulic part of all the solenoid valves.

[0013] In the set of solenoid valves according to the first aspect of the invention, the distribution conduit comprises at least one flow disruptor extending in projection towards the interior of the distribution conduit, so as to oppose a hydraulic flow in said distribution conduit.

[0014] In the context of the present invention, a solenoid valve is an electrically controlled hydraulic valve which makes it possible to control a fluid flow rate - here the flow rate of the cleaning liquid intended to flow into the distribution conduit - at the outlet sleeve of said solenoid valve. Thus, the solenoid valve makes it possible to define an outlet flow rate measured at the outlet sleeve between a minimum value, ideally zero, and a maximum value. The outlet flow rate can be finely adjusted to any value between the minimum value and the maximum output flow rate value.

[0015] In the context of the present invention, the outlet sleeve forms a connector - male or female - intended to be fluidically coupled to a fluid conduit located downstream of the set of solenoid valves according to the first aspect of the invention in order to allow a supply of cleaning liquid for one or more cleaning systems located downstream of the set of solenoid valves according to the first aspect of the invention.

[0016] In the context of the present invention, the electrical part of the solenoid valve comprises an electromagnetic circuit for controlling the opening or closing of the hydraulic part, so as to control the output flow at the output sleeve.

[0017] In the context of the present invention, the hydraulic part makes it possible to put into fluid communication or to fluidly isolate an upstream part of the solenoid valve - typically the distribution conduit - with a downstream part of the solenoid valve - typically the fluid conduit intended to be connected to the outlet sleeve. The hydraulic part comprises for example a movable piston in the body of the solenoid valve and making it possible to close an opening towards the outlet sleeve or to move away from it.

[0018] In the context of the present invention, the housing houses the solenoid valve. The housing is advantageously formed from plastic and obtained by molding. The housing optionally includes anchoring means or means of fixing to the other housings located next to it and forming the set of solenoid valves according to the invention. The housing makes it possible to protect the solenoid valve.

[0019] In the context of the present invention, the distribution conduit forms a conduit cleaning liquid supply located upstream of the solenoid valves. The distribution conduit is intended to be fluidically connected to a cleaning liquid reservoir. The distribution conduit associated with a first solenoid valve is fluidically coupled to the distribution conduit associated with a second solenoid valve adjacent to the first solenoid valve. Generally speaking, the distribution conduit of a given solenoid valve is integral with the hydraulic part of the solenoid valve, and or forms at least part of said hydraulic part. The distribution conduit may be made of the same material as the hydraulic part of a solenoid valve, or attached and fixed integrally to said hydraulic part.

[0020] In the context of the present invention, the set of solenoid valves brings together and secures several solenoid valves in a block forming a sub-assembly dedicated to the cleaning liquid distribution function. The solenoid valves are connected to each other at their distribution conduit, in series with each other. Optionally, the solenoid valves are connected to each other at their housing.

[0021] In the context of the present invention, each at least one flow disruptor forms an obstacle to the flow of the cleaning liquid in the distribution conduit. The flow disruptor thus makes it possible to disrupt the flow of the cleaning liquid in the distribution conduit and to facilitate its flow towards one or more solenoid valves of the assembly according to the first aspect of the invention.

[0022] In the context of the present invention, an elongation axis is defined relative to the distribution duct, the elongation axis thus corresponds to the main direction of elongation of the distribution duct of a solenoid valve and, more generally, to the direction of elongation of the distribution duct formed by all the solenoid valves. In the context of the present invention, the elongation axes associated with each solenoid valve are all parallel to each other, and even collinear.

[0023] In the context of the present invention, a proper extension axis is defined as a main elongation axis of one of the solenoid valves, i.e. the axis associated with the largest dimension of the housing in which a solenoid valve is housed. Typically, but not limited to, the proper extension axis is perpendicular to the elongation axis.

[0024] Thus, the set of solenoid valves according to the first aspect of the invention solves the technical problem mentioned above in that the presence of the flow disruptor(s) in the distribution conduit makes it possible to direct the cleaning liquid flowing in said distribution conduit towards one or more of the solenoid valves of the set. In other words, the flow disruptor(s) oppose a laminar flow of the cleaning liquid in the distribution conduit. Conversely, the flow disruptor(s) make it possible to generate a turbulent flow which makes it suitable for moving towards the solenoid valve(s) located near said flow disruptor(s). As a result, the fluid supply of the solenoid valves and their outlet sleeve is improved, optimizing the general operation of the set of solenoid valves in accordance with the first aspect of the invention as well as that of the cleaning system with which it is intended to be associated.

[0025] The set of solenoid valves in accordance with the first aspect of the invention advantageously comprises at least one of the improvements below, the technical characteristics forming these improvements being able to be taken alone or in combination:

[0026] - according to a first embodiment, the set of solenoid valves does not comprise only one flow disruptor, and the flow disruptor is then associated with the first solenoid valve relative to the flow of the cleaning liquid in the distribution conduit of the set of solenoid valves. More particularly, in this case, the flow disruptor is advantageously located opposite or downstream of the first solenoid valve, so as to disrupt the flow of the cleaning liquid in the distribution conduit and for all the solenoid valves. This advantageous configuration makes it possible to generate a turbulent flow in an economical and simplified manner;

[0027] - according to a second embodiment, the set of solenoid valves comprises several flow disruptors, the flow disruptors being distributed along the distribution duct of the solenoid valve assembly. This advantageous configuration makes it possible to promote a turbulent flow of the cleaning liquid in the distribution duct and over the entire length of said distribution duct, relative to its axis of elongation. This advantageous configuration is more complex but makes it possible to obtain better results for the solenoid valves located furthest downstream;

[0028] - each at least one flow disruptor is associated with one of the solenoid valves. Generally, at least some of the solenoid valves are associated with a flow disruptor. Preferably, each solenoid valve is associated with a flow disruptor. By "associated", it is understood that the flow disruptor is located close to the solenoid valve in question. More generally, the flow disruptor is incorporated into the portion of the distribution conduit which is associated, i.e. integral, with the solenoid valve block in question;

[0029] - in particular, each at least one flow disruptor is located opposite the solenoid valve with which it is associated. This advantageous configuration makes it possible to optimize the diversion of the cleaning liquid flowing in the distribution conduit towards the solenoid valve in question, and its hydraulic part, or even its outlet sleeve;

[0030] - more precisely, each at least one flow disruptor is located opposite a coupling opening between the hydraulic part of the solenoid valve and the distribution conduit. In other words, relative to the elongation axis, the at least one flow disruptor is located at the outlet sleeve of all or part of the solenoid valves. In the context of the present invention, the coupling opening is an opening provided on a lower part of the housing housing the solenoid valve, located at the hydraulic part of said solenoid valve. The coupling opening makes it possible to put the hydraulic part of the solenoid valve into fluid communication with the distribution conduit. This advantageous configuration makes it possible to optimize the diversion of the cleaning liquid flowing in the distribution conduit towards the solenoid valve in question, and its hydraulic part, or even its outlet sleeve;

[0031] - the at least one flow disruptor projects from a wall of the duct of distribution and towards a central part of said distribution duct. In particular, the at least one flow disruptor projects from the wall of the distribution duct located opposite the coupling opening of the solenoid valve with which said flow disruptor is associated. This advantageous configuration makes it possible to optimize the diversion of the cleaning liquid flowing in the distribution duct towards the solenoid valve in question, and its hydraulic part, or even its outlet sleeve;

[0032] - the at least one flow disruptor extends radially from the wall of the distribution duct. The adjective radial here refers to the axis of elongation of the distribution duct: the flow disruptor extends in the distribution duct perpendicularly or substantially perpendicularly to the axis of elongation of said distribution duct. This advantageous configuration makes it possible to optimize the deflection of the cleaning liquid flowing in the distribution duct towards the solenoid valve in question, and its hydraulic part, or even its outlet sleeve;

[0033] - the at least one disruptor forms a narrowing of a transverse section of the distribution duct. In the context of the present invention, the cross-section corresponds to the surface of the distribution duct taken in a plane perpendicular to the axis of elongation of said distribution duct. Thus, the narrowing forms a reduction in the cross-section of the distribution duct, at the level of the flow disruptor, compared to said distribution duct taken outside the flow disruptor. This advantageous configuration makes it possible to optimize the deviation of the cleaning liquid flowing in the distribution duct towards the solenoid valve in question, and its hydraulic part, or even its outlet sleeve;

[0034] - as non-limiting examples, the at least one flow disruptor reduces the section transverse of the distribution duct by a factor of between 1.5 and 2.5, preferably equal to 2. In other words, an area of ​​the transverse section of the distribution duct, taken at the level of the at least one flow disruptor, is equal to the area of ​​the transverse section of the distribution duct taken outside of said flow disruptor divided by the factor of between 1.5 and 2.5, preferably equal to 2;

[0035] - each at least one flow disruptor can take a variety of forms, the invention not being limiting as to these shapes and / or their dimensions. In the case where the set of solenoid valves according to the first aspect of the invention comprises several flow disruptors, then the flow disruptors are all identical or at least some of them are different, in particular by their shape and / or their dimension. This configuration is advantageous to make it possible to obtain a sufficient diversion of the cleaning liquid flowing in the distribution conduit towards the hydraulic part of the solenoid valves located furthest downstream in the set according to the first aspect of the invention;

[0036] - according to a preferred embodiment of the invention, the at least one disruptor flow comprises a deflector which extends across the distribution duct. The deflector is shaped such that it opposes the flow of the cleaning liquid in the direction of the elongation axis, and that, conversely, it causes a deviation of said flow of cleaning liquid towards the hydraulic part of the associated solenoid valve and / or towards the corresponding coupling opening;

[0037] - in particular, the deflector extends from the wall of the distribution duct and oriented towards the coupling opening. This advantageous configuration makes it possible to optimize the diversion of the cleaning liquid flowing in the distribution conduit towards the solenoid valve in question, and its hydraulic part, or even its outlet sleeve;

[0038] - according to a first embodiment variant, each at least one flow disruptor is made of one material with the distribution conduit. In the context of the present invention, by “made of one material”, it is understood that the flow disruptor and the distribution conduit are made from the same manufacturing process and that they cannot be detached from each other without one and / or the other being entirely or partially damaged or destroyed. Alternatively, the at least one flow disruptor is attached to the distribution conduit and fixed to it by any fixing means.

[0039] According to a second aspect of the invention, there is provided a cleaning system for a motor vehicle, the cleaning system comprising:

[0040] - the set of solenoid valves according to the first aspect of the invention or according to one any of its improvements;

[0041] - a plurality of cleaning devices, each cleaning device being associated with a motor vehicle sensor;

[0042] - a plurality of fluid conduits fluidly coupling the devices of cleaning the solenoid valve assembly.

[0043] In particular, each cleaning device is fluidically coupled to one of the solenoid valves of the assembly. For this purpose, each fluid conduit is coupled, at a first end, to the outlet sleeve of one of the solenoid valves and, at a second end, to the cleaning device.

[0044] In the context of the present invention, the cleaning device comprises at least one nozzle for spraying a cleaning liquid onto a surface to be cleaned of the sensor with which it is associated. The cleaning liquid is conveyed to the cleaning device via the fluid conduit. Controlling the solenoid valve assembly thus makes it possible to selectively control a flow of cleaning liquid in each fluid conduit, making it possible to selectively activate each cleaning device using a single set of solenoid valves in accordance with the first aspect of the invention.

[0045] The cleaning system according to the second aspect of the invention advantageously comprises a storage tank for the cleaning liquid. The storage tank is fluidically coupled to the distribution conduit of the set of solenoid valves. Subsequently, the control of each solenoid valve makes it possible to direct the cleaning liquid circulating in the distribution conduit towards the active cleaning device(s).

[0046] Various embodiments of the invention are provided, integrating according to all of their possible combinations the different optional characteristics set out here.

[0047] Other characteristics and advantages of the invention will become apparent from the following description on the one hand, and from several exemplary embodiments given for informational and non-limiting purposes with reference to the appended schematic drawings on the other hand, in which:

[0048] [Fig.l] illustrates a front view of an exemplary embodiment of a set of solenoid valves in accordance with the first aspect of the invention;

[0049] [Fig.2] illustrates a detailed view of the hydraulic part of a hydraulic block of a solenoid valve of the solenoid valve assembly shown in [Fig.l];

[0050] [Fig.3] illustrates a side view of the hydraulic part illustrated in [Fig.2];

[0051] [Fig.4] illustrates a sectional view of the hydraulic part illustrated in [Fig.2].

[0052] Of course, the characteristics, variants and different embodiments of the invention may be associated with each other, in various combinations, to the extent that they are not incompatible or mutually exclusive. In particular, variants of the invention may be imagined comprising only a selection of characteristics described below in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from the prior art.

[0053] In particular, all the variants and all the embodiments described can be combined with each other if nothing prevents this combination from a technical point of view.

[0054] In the figures, the elements common to several figures retain the same reference.

[0055] With reference to FIGURES 1 to 4, the invention relates more particularly to hydraulic blocks 10 as found in solenoid valve assemblies 1 associated with cleaning systems for motor vehicles. Such cleaning systems are associated with one or more sensors in order to clean a detection surface to ensure optimal operation of the sensor. Such cleaning systems comprise:

[0056] - a set of solenoid valves 1;

[0057] - a plurality of cleaning devices, each cleaning device being associated with a motor vehicle sensor;

[0058] - a plurality of fluid conduits fluidly coupling each device of cleaning the solenoid valve assembly 1.

[0059] In the context of the present invention, each cleaning device comprises at least one nozzle for spraying a cleaning liquid onto the detection surface to be cleaned of the sensor with which it is associated. The cleaning liquid is conveyed from the set of solenoid valves 1 and to each cleaning device via the fluid conduits. On the other hand, the set of solenoid valves 1 is fluidically connected to a cleaning liquid reservoir via a single fluid conduit, thus making it possible to save money and simplify the integration of such a cleaning system on a motor vehicle.

[0060] As a result, the control of the solenoid valve assembly makes it possible to selectively control a flow of cleaning liquid in each fluid conduit, making it possible to selectively activate each cleaning device using a single set of solenoid valves 1.

[0061] The set of solenoid valves 1 comprises several hydraulic blocks 10 connected to each other. With reference to [Fig.l], such hydraulic blocks 10 comprise:

[0062] - a housing 111;

[0063] - a solenoid valve comprising an electrical part 11 housed in the housing 111 and a hydraulic part 12 comprising an outlet sleeve 122 located at a lower end of the housing 111;

[0064] - a distribution conduit 121 located at the lower end of the housing 111, the distribution conduit 121 being in fluid communication with a body of the solenoid valve and with the outlet sleeve 122;

[0065] - coupling members 123 with a second hydraulic block 10, the coupling members coupling 123 comprising first coupling members 123 associated with a first end of the distribution conduit 121, and second coupling members 123 associated with a second end of the distribution conduit 121.

[0066] In FIGURES 1 to 4 described below, we define:

[0067] - an elongation axis 02 relative to the distribution conduit 121. The axis elongation axis 02 thus corresponds to the main direction of elongation of the distribution conduit 121 of a given solenoid valve and, more generally, to the direction of elongation of the distribution conduit 121 formed by all the solenoid valves of the set of solenoid valves 1. In the context of the present invention, the axes of elongation associated with each solenoid valve are all parallel to each other, and even collinear; and

[0068] - an extension axis 01 specific to a main elongation axis 02 of one of the elec trovannes, that is to say the axis associated with the largest dimension of the housing 111 in which a solenoid valve is housed. In the embodiments illustrated in FIGURES 1 to 4, the proper extension axis 01 is advantageously perpendicular to the elongation axis 02.

[0069] Thus, in the set of solenoid valves 1 of the sensor cleaning system, each hydraulic block 10 is coupled to an adjacent hydraulic block 10 via its coupling members 123, so that the distribution conduits 121 of each hydraulic block 10 are connected to each other in order to form a single distribution conduit 121. This single distribution conduit 121 is coupled, at an upstream end, to the cleaning liquid reservoir. In addition, this single distribution conduit 121 comprises several outlet paths, materialized by the outlet sleeve 122 of each hydraulic block 10, in order to direct the cleaning liquid towards one or more selectively selected cleaning devices, depending on the state of each corresponding solenoid valve.

[0070] With reference to FIGURES 1 to 4, in the set of solenoid valves 1 according to the invention, the distribution conduit 121 comprises at least one flow disruptor 13 extending projecting towards the inside of the distribution conduit 121, so as to oppose a hydraulic flow in said distribution conduit 121. Each flow disruptor 13 thus forms an obstacle to the flow of the cleaning liquid in the distribution conduit 121. Each flow disruptor 13 thus makes it possible to disrupt the flow of the cleaning liquid in the distribution conduit 121 and to facilitate its flow towards one or more solenoid valves of the set of solenoid valves 1 according to the invention.

[0071] Thus, the presence of one or more flow disruptors 13 in the distribution conduit 121 makes it possible to transform a laminar flow of the cleaning liquid in an upstream portion of the distribution conduit 121, relative to said flow disruptor 13, into a turbulent flow in a downstream portion of the distribution conduit 121, relative to said flow disruptor 13. This configuration is particularly advantageous for facilitating the flow of cleaning liquid towards a fluid conduit downstream of an open solenoid valve.

[0072] FIGURES 2 to 4 illustrate in more detail the flow disruptor 13 associated with a hydraulic block 10. Obviously, the invention is not limited to the configuration shown in the FIGURES. Thus, the invention provides, for example, that the set of solenoid valves 1 comprises one or more flow disruptors 13. Depending on their number, the position of the flow disruptors 13 relative to the elongation axis 02 of the distribution conduit 121 varies:

[0073] - if the set of solenoid valves 1 only has one flow disruptor 13, the flow disruptor 13 is then associated with the first solenoid valve relative to the flow of the cleaning liquid in the distribution conduit 121 of the set of solenoid valves 1. More particularly, in this case, the flow disruptor 13 is advantageously located opposite or downstream of the first solenoid valve, so as to disrupt the flow of the cleaning liquid in the distribution conduit 121 and for all the solenoid valves. This advantageous configuration makes it possible to generate a turbulent flow in an economical and simplified manner over the entire distribution conduit 121 and therefore for all the solenoid valves located downstream of the first solenoid valve;

[0074] - if the set of solenoid valves 1 comprises several flow disruptors 13, then the flow disruptors 13 are advantageously distributed along the distribution duct 121 of the set of solenoid valves 1, relative to the elongation axis 02. This advantageous configuration makes it possible to promote a turbulent flow of the cleaning liquid in the distribution duct 121 and over the entire length of said distribution duct 121, relative to its elongation axis 02. This advantageous configuration is more complex but makes it possible to obtain better results for the solenoid valves located furthest downstream. In this case, it is advantageous, for example, for each solenoid valve to be associated with a flow disruptor 13. Optionally, every other solenoid valve is associated with a flow disruptor 13.

[0075] FIGURES 2 to 4 illustrate an exemplary embodiment of the association of a flow disruptor 13 with the hydraulic part 12 of a solenoid valve of a hydraulic block 10 forming the set of solenoid valves 1.

[0076] In the embodiment illustrated in FIGURES 2 to 4, the flow disruptor 13 is located opposite the solenoid valve with which it is associated in order to optimize the diversion of the cleaning liquid flowing in the distribution conduit 121 in the direction of the solenoid valve in question, and of its hydraulic part 12, or even of its outlet sleeve 122. More precisely, the flow disruptor 13 is located opposite a coupling opening 124 between the hydraulic part 12 of the solenoid valve and the distribution conduit 121.

[0077] The coupling opening 124 is an opening provided on a lower part of the housing 111 housing the solenoid valve, located at the level of the hydraulic part 12 of said solenoid valve. The coupling opening 124 makes it possible to put the hydraulic part 12 of the solenoid valve into fluid communication with the distribution conduit 121 when the solenoid valve is open, in order to direct the cleaning liquid flowing in the distribution conduit 121 towards the outlet sleeve 122 of the solenoid valve in question.

[0078] As visible in FIGURES 2 to 4, relative to the elongation axis 02, the flow disruptor 13 of a solenoid valve of a given hydraulic block 10 is located at the level of the outlet sleeve 122.

[0079] The flow disruptor 13 is formed from the distribution duct 121, or from said distribution duct 121. Generally, the flow disruptor 13 is associated with the distribution duct 121. The flow disruptor 13 extends projecting from a wall of the distribution duct 121 and towards a central part of said distribution duct 121. In other words, the flow disruptor 13 extends from a peripheral part of the distribution duct 121 towards a central part of said distribution duct 121.

[0080] In particular, the flow disruptor 13 projects from the wall of the distribution conduit 121 located opposite the coupling opening 124 of the solenoid valve with which said flow disruptor 13 is associated, in order to force a portion of the cleaning liquid flowing in the distribution conduit 121 to be oriented in the direction of the coupling opening 124, the solenoid valve and its outlet sleeve 122. As visible in FIGURES 2 to 4, the flow disruptor 13 extends radially from the wall of the distribution conduit 121: the flow disruptor 13 extends in the distribution conduit 121 perpendicularly or substantially perpendicularly to the elongation axis 02 of said distribution conduit 121.

[0081] The flow disruptor 13 is advantageously located opposite the coupling opening 124, that is to say on a part of the distribution conduit 121 opposite the coupling opening 124, relative to the elongation axis 02. The disruptor then forms a narrowing of a transverse section of the distribution conduit 121. Thus, the narrowing forms a reduction of the transverse section of the distribution conduit 121, at the level of the flow disruptor 13, relative to said distribution conduit 121 taken outside the flow disruptor 13.

[0082] In the embodiment shown in [Fig.4], the flow disruptor 13 here forms a rectilinear wall 131 which extends parallel to the elongation axis 02 of the distribution duct 121, and at the middle portion of the distribution duct 121. In particular, the rectilinear wall 131 forming the flow disruptor 13 forms a diameter of the distribution duct 121, or it is located near such a middle position.

[0083] The flow disruptor 13 thus forms a deflector which extends across the distribution conduit 121. The deflector has a shape such that it opposes the flow of the cleaning liquid in the direction of the elongation axis 02, and that, conversely, it causes a deviation of said flow of cleaning liquid towards the hydraulic part 12 of the associated solenoid valve and / or towards the corresponding coupling opening 124.

[0084] In summary, the invention relates to a set of solenoid valves 1 for a sensor cleaning system of a motor vehicle, the set comprising a plurality of hydraulic blocks 10 each implementing a solenoid valve, each hydraulic block 10 comprising an electrical part 11 housed in a housing 111 and a hydraulic part 12 comprising an outlet sleeve 122 located at a lower end of the housing 111. The set comprises a single distribution conduit 121 fluidly coupling the hydraulic part 12 of all the solenoid valves, the distribution conduit 121 comprising at least one flow disruptor 13 extending projecting towards the inside of the distribution conduit 121, so as to oppose a hydraulic flow in said distribution conduit 121 and to make it more turbulent.

[0085] Of course, the invention is not limited to the examples which have just been described and numerous adjustments can be made to these examples without departing from the scope of the invention. In particular, the different characteristics, forms, variants and embodiments of the invention can be associated with each other in various combinations insofar as they are not incompatible or mutually exclusive. In particular, all the variants and embodiments described above can be combined with each other.

Claims

Claims

1. Solenoid valve assembly (1) for a sensor cleaning system of a motor vehicle, the assembly comprising a plurality of solenoid valves, each solenoid valve comprising an electrical part (11) housed in a housing (111) and a hydraulic part (12) comprising an outlet sleeve (122) located at a lower end of the housing (111), the assembly further comprising a single distribution conduit (121) fluidly coupling the hydraulic part (12) of all the solenoid valves, characterized in that the distribution conduit (121) comprises at least one flow disruptor (13) extending projecting towards the inside of the distribution conduit (121), so as to oppose a hydraulic flow in said distribution conduit (121).

2. Set of solenoid valves (1) according to the preceding claim, in which each at least one flow disruptor (13) is associated with one of the solenoid valves.

3. A set of solenoid valves (1) according to any one of the preceding claims, wherein each at least one flow disruptor (13) is located opposite the solenoid valve with which it is associated.

4. A set of solenoid valves (1) according to any one of the preceding claims, wherein each at least one flow disruptor (13) is located opposite a coupling opening (124) between the hydraulic part (12) of the solenoid valve and the distribution conduit (121).

5. Solenoid valve assembly (1) according to the preceding claim, wherein the at least one flow disruptor (13) projects from the wall of the distribution conduit (121) located opposite the coupling opening (124) of the solenoid valve with which said flow disruptor (13) is associated.

6. A solenoid valve assembly (1) according to any preceding claim, wherein the at least one flow disruptor (13) extends radially from the wall of the distribution conduit (121).

7. A solenoid valve assembly (1) according to any preceding claim, wherein the at least one disruptor forms a narrowing of a cross-section of the distribution conduit (121).

8. Solenoid valve assembly (1) according to the preceding claim taken in combination with claim 4, wherein the at least one flow disruptor (13) comprises a deflector extending across the distribution duct (121), said deflector extending from the wall of the distribution duct (121) and oriented towards the coupling opening (124).

9. Solenoid valve assembly (1) according to any one of the preceding claims, wherein the at least one flow disruptor (13) is made in one piece with the distribution conduit (121).

10. Cleaning system for a motor vehicle, the cleaning system comprising: - the set of solenoid valves (1) according to any one of the preceding claims; - a plurality of cleaning devices, each cleaning device being associated with a sensor of the motor vehicle; - a plurality of fluid conduits fluidly coupling the cleaning devices to the set of solenoid valves (1).

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