Nozzle of injection device

Abstract

The invention relates to a nozzle (10) for a device (1) for spraying a cleaning fluid, the nozzle (10) being intended to be attached to a body (6) of the spraying device (1), which body at least partially defines a conduit (8) for conveying the cleaning fluid, characterized in that the nozzle (10) comprises at least one channel (14), the nozzle (10) comprises at least one channel (14) configured to direct a flow of the cleaning fluid towards an ejection outlet of the cleaning fluid, the nozzle (10) further comprising a wall forming a flow guide (16) arranged facing the ejection outlet of the channel (14), the nozzle (10) being integrally formed.

Description

Technical Field

[0001] The present invention belongs to the field of systems for cleaning vehicle detection devices, and more particularly to a cleaning device for spraying cleaning liquid onto a detection surface of the detection device. Background Art

[0002] In recent years, many equipments have been added to the latest models. Among these equipments, some work through detection devices, such as automatic driving systems. Automatic driving systems include multiple detection devices, such as cameras, radars, laser radars (LIDAR, light detection and ranging) or other infrared wave sensors. Such detection devices usually include a detection surface, through which the waves emitted by the detection device are emitted into the external environment around the vehicle equipped with the automatic driving system, and the surface waves returned from the external environment pass through the detection surface. The detection surface is usually optically neutral and must be suitable for not interfering with the signals emitted or received by the detection device.

[0003] The system for cleaning the detection device generally comprises at least one cleaning fluid injection device, which is mounted on the detection device and can inject the cleaning fluid onto the detection surface of the detection device. In addition, alternatively or additionally, the cleaning system can include a circuit capable of directing the air flow toward the detection surface.

[0004] The cleaning fluid ejection device is positioned close to the detection surface of one of the detection devices in order to optimize the cleaning of the detection surface. It is known that such ejection devices include at least two elements: a body and a nozzle. The nozzle and the body usually contribute to define a channel through which the cleaning fluid circulates toward an outlet orifice. The body further includes a guide that guides the cleaning fluid onto the detection surface. More specifically, the cleaning fluid is ejected from the outlet orifice of the channel onto the guide so as to produce a flat jet of the cleaning fluid toward the detection surface.

[0005] It is important to be able to ensure that the components are positioned very accurately relative to each other in order to ensure that the guide is correctly positioned both relative to the channel and relative to the surface to be cleaned. These are conditions that ensure that the jet impinges on the surface to be cleaned at the desired impingement angle and the desired angular spread.

[0006] Furthermore, the high-pressure spraying of the cleaning fluid on the guide portion may cause the guide portion to be displaced relative to its initial position and cause a gap to appear between the main body and the nozzle, so that when the spray device is gradually used, the cleaning fluid may penetrate into the gap, especially by capillary effect. Therefore, the cleaning fluid that has penetrated in this way may cause damage to the main body and / or the nozzle, more specifically, to the attachment between the main body and the nozzle.

[0007] The present invention proposes an alternative solution to currently existing solutions by proposing a nozzle forming part of a cleaning fluid injection device, which nozzle allows the jet to be injected repeatedly and reliably onto the surface to be cleaned in a manner consistent with theoretical calculations, while also avoiding any penetration of the cleaning fluid in the area where the body and the nozzle are welded together. Summary of the invention

[0008] In this context, the main subject of the invention is a nozzle for a device for spraying a cleaning fluid, the nozzle being intended to be attached to a body of the spraying device, the body at least partially defining a duct for conveying the cleaning fluid, characterised in that the nozzle comprises at least one channel configured to direct the flow of the cleaning fluid towards a spray outlet for the cleaning fluid, the nozzle further comprising a wall forming a guide portion, the guide portion being arranged facing the spray outlet of the channel, the nozzle being formed integrally.

[0009] According to the invention, the flow guide and the channel are therefore part of the same component: the nozzle. More specifically, the nozzle is formed as a one-piece element, that is to say that separating one of the constituent elements of the nozzle from the other will result in the destruction of one or the other of the elements constituting said nozzle.

[0010] This solves the above technical problem, since incorporating the channel and the flow guide into the same component means that accurate positioning of the channel and the flow guide relative to each other does not need to be taken into account in terms of assembly tolerances of the nozzle and the assembly body.

[0011] According to a preferred optional feature of the invention, the nozzle further comprises an attachment system configured to secure the nozzle to a body of a spraying device.

[0012] According to an optional feature of the invention, the channel extends along a main extension direction, has an inlet orifice and an outlet orifice, and the guide comprises a wall having an ejection face facing the outlet orifice of the channel, the ejection face extending mainly in a plane secant to the main extension direction of the channel.

[0013] According to another optional feature of the present invention, the surface through which the channel opening passes extends in a plane intersecting with a plane containing the surface of the guide portion to which the cleaning fluid is sprayed. This inclination of the surface through which the channel opening passes widens the spray angle range of the cleaning fluid sprayed from the guide portion.

[0014] According to another optional feature of the invention, the nozzle comprises at least a synthetic material and the nozzle is produced by injection molding.

[0015] Advantageously, the synthetic material is polypropylene, polyurethane, polyamide, polycarbonate, polyoxymethylene, PVC or ABS.

[0016] According to another optional feature of the invention, the nozzle comprises a plurality of channels arranged adjacent to each other along a direction intersecting their main extension direction, the channels each comprising an outlet orifice, the flow guide extending towards each of the outlet orifices of the channel. This then makes it possible to produce a spray device in the form of a spray boom, which is particularly suitable for cleaning detection devices with large detection surfaces, such as LIDAR.

[0017] According to another optional feature of the invention, the flow guide comprises a single wall extending facing each of the outlet apertures of the channel.

[0018] According to another optional feature of the invention, the flow guide comprises a plurality of walls, each wall being arranged facing one of the outlet orifices of the channel. This particular configuration makes it possible to generate different spray jets having at least two different spray angles.

[0019] According to another optional feature of the invention, the nozzle has an inner face and an opposite outer face, the inner face being arranged to face the body, the spray zone for spraying the cleaning fluid opening on the outer face, the attachment system being arranged on the inner face.

[0020] According to another optional feature of the invention, the injection zone is defined by the flow guide and an inclined plane on which the outlet orifice of the channel facing the flow guide opens.

[0021] According to another optional feature of the invention, the nozzle extends along a main extension direction, has an injection end and an opposite connection end, at least the outlet orifice of the guide portion and the channel is located at the injection end, and the nozzle includes a clip-on fastening element, which constitutes an attachment system and is arranged at the connection end.

[0022] Another subject of the invention is a spray device of a system for dispensing cleaning fluids, comprising a body which helps define a conduit for delivering the cleaning fluid and a nozzle according to any of the preceding features, the channel being in fluid communication with the delivery conduit.

[0023] According to another optional feature of the invention, the spraying device includes a reservoir of cleaning fluid disposed between the delivery conduit and the passage of the nozzle, the nozzle at least partially contributing to defining the reservoir.

[0024] According to another optional feature of the invention, the reservoir is defined by both the body and the nozzle.

[0025] According to another optional feature of the invention, the body comprises a housing for the nozzle, the guide having an inner surface facing the outlet orifice of the passage and an outer surface facing a wall of the body helping to define the housing.

[0026] In this context, it is worth noting that the injection of cleaning fluid from the channel onto the guide may cause the guide to be displaced from its initial position, but in the form of a wall of the body that helps to define the housing that pushes it. Therefore, the injection of cleaning fluid has the effect of reducing any gap that may exist between the nozzle and the body, and this has the effect of preventing the cleaning fluid from penetrating between the nozzle and the body and thus causing their premature damage.

[0027] According to another optional feature of the invention, the attachment system is a weld connecting the inner face of the nozzle and the body.

[0028] According to another optional feature of the invention, the weld is an ultrasonic weld.

[0029] According to another optional feature of the invention, the welds lie in a single plane.

[0030] According to another optional feature of the invention, the weld extends over the periphery of the inner face of the nozzle.

[0031] According to another optional feature of the present invention, the spray device includes positioning devices for positioning the nozzle on the main body, and these positioning devices include at least ribs and grooves cooperating with the ribs, one of the ribs and the groove is arranged on the nozzle, and the other of the ribs and the groove is arranged on the main body.

[0032] According to another optional feature of the invention, the weld between the nozzle and the body is produced near the positioning means. "Near the positioning means" means that the weld is produced on the same surface as the surface on which the ribs are produced or on the same surface as the surface on which the grooves are produced.

[0033] A final subject of the invention is a system for dispensing a cleaning fluid, comprising at least a cleaning fluid reservoir and a spraying device according to any of the preceding features for spraying the cleaning fluid, and a delivery conduit for conveying the cleaning fluid and fluidically connecting the cleaning fluid reservoir to the spray nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other characteristics, details and advantages of the invention will become more apparent on reading the following description and on studying several exemplary embodiments given by way of non-limiting indication, with reference to the attached schematic drawings, in which:

[0035] [ Figure 1 ] is a perspective view of a spray device including a nozzle according to the present invention;

[0036] [ Figure 2 ] is a longitudinal sectional view of a nozzle according to a first embodiment of the present invention; and

[0037] [ Figure 3] is a longitudinal sectional view of a nozzle according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0038] The features, variants and various embodiments of the present invention can be combined with each other in various combinations, as long as they are not mutually incompatible or mutually exclusive. In particular, it is conceivable that the variant of the present invention only includes the selection of the features described below that are separated from the other features described, provided that this selection of features is sufficient to confer technical advantages and / or distinguish the present invention from the prior art.

[0039] In the drawings, elements common to several figures have the same reference numerals.

[0040] Additionally, the terms "upstream" and "downstream" used in the following description refer to the circulation direction of the cleaning fluid through the injection device.

[0041] Figure 1 The figure shows a spraying device 1 of a cleaning fluid dispensing system, the spraying device 1 being configured to spray a cleaning fluid jet 4 onto a detection surface 2 of a detection device, such as Figure 2 or Figure 3 Visible in.

[0042] More specifically, the detection device comprises on the one hand a main component (including, for example, a sensor) and on the other hand a detection surface 2, which is located between the sensor housed in the main component and the external environment around the detection device. For example, the sensor of the detection device can be a camera, a radar or even a LIDAR, but this list is not exhaustive. Such a detection device transmits electromagnetic waves to the external environment around the detection device and / or receives electromagnetic waves from it to detect one or more objects present in the environment. The detection surface 2 is designed so that the electromagnetic waves emitted and / or received by the sensor can pass through the detection surface 2 without being deflected or changed.

[0043] The spraying device 1, intended to be connected to a cleaning fluid distribution network not depicted here, is configured to spray the cleaning fluid in the form of a jet 4, which, where applicable, can be a flat jet extending mainly in one plane, onto the detection surface 2 of the detection device at a determined angle of impact on the detection surface. Thus, spraying the cleaning fluid by the spraying device 1 allows the detection surface 2 to be cleaned of everything that has deposited thereon and is liable to hinder the acquisition of an image, whether it is dirt or droplets.

[0044] For this reason, as in Figure 2 and Figure 3As can be seen in the figure, the spraying device 1 more specifically comprises: a body 6, which helps to define a delivery conduit 8 for delivering a cleaning fluid; and a nozzle 10 according to the present invention. The body 6 is configured to guide the cleaning fluid from the cleaning fluid distribution network to the nozzle 10, which is configured to spray the cleaning fluid toward the detection surface 2 of the detection device. The nozzle 10 includes an attachment system 12, which is used to attach to the body 6 so as to fix the nozzle 10 to the body 6.

[0045] According to the invention, the nozzle 10 comprises at least one channel 14 configured to direct the flow of the cleaning fluid towards an outlet orifice 20 for the cleaning fluid, the nozzle 10 further comprising a wall forming a flow guide 16, the flow guide being arranged facing the jet outlet of the channel 14, the nozzle 10 being formed in one piece. In other words, the flow guide 16 and the channel 14 form part of the nozzle 10. More specifically, the nozzle 10 is formed as an integral element, that is, separating one of the constituent elements of the nozzle 10 from the other elements will result in the destruction of one or another of the elements constituting the nozzle 10, and the integral element is produced in such a way that a flow guide and a channel having an outlet orifice arranged facing the flow guide are accommodated therein.

[0046] As can be seen in the illustrated example, the channel 14 extends along a main extension direction, has an inlet orifice 18 and an outlet orifice 20, and the guide 16 comprises a wall having a jet face 22 facing the outlet orifice 20 of the channel 14, the jet face 22 extending mainly in a plane intersecting the main extension direction of the channel 14. It is worth noting that the control of the size of the angle between the jet face and the main extension direction of the channel 14 is combined with the control of the distance between the jet face 22 and the outlet orifice 20, making it possible to ensure that the jet 4 conforms to the desired jet for cleaning the detection surface 2 of the detection device. As mentioned above, the fact that the channel 14 and the guide 16 are produced in the same integral component makes it possible to limit the influence of manufacturing tolerances and ensure that the guide 16 is correctly positioned relative to the channel and its outlet orifice 20 without taking into account assembly tolerances.

[0047] The channel 14 is in fluid communication with the delivery pipe 8 , which means that the cleaning fluid circulating in the delivery pipe 8 also circulates through the channel 14 to be sprayed toward the flow guide portion 16 .

[0048] Furthermore, preferably, the nozzle 10 comprises at least a synthetic material, the nozzle 10 being produced by injection molding. However, it would be conceivable to produce the nozzle 10 using additive manufacturing without departing from the scope of the present invention.

[0049] Advantageously, the synthetic material is polypropylene, polyurethane, polyamide, polycarbonate, polyoxymethylene, PVC or ABS.

[0050] Before describing the second embodiment of the injection device 1, reference will now be made to Figure 2 A first embodiment of the injection device 1 is described.

[0051] like Figure 2 As illustrated, the body 6 has an upper edge 24 and an opposite lower edge 26 on which the nozzle 10 is arranged. The terms "upper" and "lower" are arbitrarily assigned herein and are not intended to indicate any spatial positioning of the spraying device 1.

[0052] Advantageously, the body 6 comprises a housing 28 for the nozzle 10 so that the nozzle 10 can be inserted and so that it does not protrude from the lower edge 26. In a section through the injection device 1 observed in a plane parallel to the main extension direction of the delivery duct 8 and substantially perpendicular to the upper edge 24 and the lower edge 26, the housing 28 adopts a rectangular overall shape defined by the three walls of the lower edge 26 and open on the side opposite to the upper edge. As illustrated, the shape of the nozzle 10 is complementary to that of the housing 28: in this case, the section through the nozzle 10 observed in a plane parallel to the above-mentioned plane has a rectangular shape intended to cooperate with a housing 28 of rectangular shape open on the side opposite to the upper edge 24.

[0053] Among the walls defining the housing 28, it is possible to distinguish notably an end wall 30 which extends at one of the longitudinal ends of the body 6. The end wall 30 thus forms a wall which serves as an end stop for the longitudinal displacement of the nozzle 10 when it is placed in the housing, as in Figure 2 More specifically, the wall of the nozzle forming the guide 16 has an outer face 46 facing this end wall 30, the outer face 46 being the face opposite to the ejection face 22 mentioned above. It will be appreciated that when the guide 16 is displaced under the force exerted by the ejection of the cleaning fluid, the outer face 46 of the guide 16 abuts against the end wall 30. This has the effect of limiting the deformation of said guide 16, but also ensures that the guide is pressed tightly against the end wall when the fluid is ejected, thereby avoiding any risk of fluid droplets penetrating by capillary action between the nozzle 10 and the body 6.

[0054] The spraying device 1 comprises a reservoir 32 for cleaning fluid, which is arranged between the delivery conduit 8 and the channel 14 of the nozzle 10, so that the reservoir forms a buffer zone between the delivery conduit of the body and the channel of the nozzle. Therefore, the purpose of the reservoir 32 is to at least partially store part of the cleaning fluid coming from the delivery conduit 8 before it circulates through the channel 14.

[0055] The reservoir 32 is defined by both the body 6 and the nozzle 10. Figure 2As illustrated, the reservoir 32 is formed more particularly by a cavity formed in the lower edge 26 of the body in the region of the housing and by a bowl formed in the nozzle which is arranged in succession to the cavity when the nozzle 10 is fixed to the body.

[0056] The nozzle 10 has an inner face 34 intended to face the body 6, in which the bowl-shaped portion that helps to form the reservoir is hollow, and an opposite outer face 36 intended to face the surface to be cleaned, in which the cleaning fluid spray area 38 is hollow. The spray area 38 comprises a recess in the nozzle in which the cleaning fluid circulates from the outlet orifice 20 of the channel 14 toward the spray face 22 of the guide portion and then circulates from the spray face toward the outside of the nozzle at a suitable angle so as to be directed toward the surface to be cleaned in the form of a flat jet 4, if applicable. It should be understood that the fluid is discharged from the nozzle 10 via the spray area 38.

[0057] In this context, it is noteworthy that the channel 14 of the nozzle 10, which is completely defined within the nozzle 10 according to the invention, is arranged in the thickness of the wall of the nozzle and opens on the side with its inlet orifice 18 into a bowl-shaped portion that contributes to the formation of the reservoir 32, and on the side with its outlet orifice 20 into the injection zone 38.

[0058] The spray zone 38 is defined on the one hand by the flow guide 16 and its spray face 22 and on the other hand by an inclined plane 40 on which the outlet opening 20 of the channel 14 opens.

[0059] The inclined plane 40 extends in a plane that intersects the plane containing the ejection face 22 of the flow guide 16. This inclination of the face 40 through which the passage 14 opens widens the range of ejection angles of the cleaning fluid ejected from the flow guide 16. The inclined plane 40 is oriented in such a way that the longitudinal dimension of the ejection zone increases with increasing proximity to the outer face 36 of the nozzle. Figure 2 and Figure 3 As shown, an angle is formed between a plane containing the inclined plane 40 and a plane containing the ejection surface 22 of the flow guide 16. This angle is required so that the flat jet 4 of the cleaning fluid can be directed onto the detection surface 2 of the detection device without being disturbed by the inclined plane 40.

[0060] The nozzle comprises, on its inner face 34 , a peripheral side 42 surrounding a cavity forming part of the reservoir, which is in contact with the body 6 , in particular with a rear wall 44 of a housing formed therein.

[0061] As previously mentioned, the wall forming the flow guide 16 extends perpendicularly to the peripheral side faces at the longitudinal end of the nozzle intended to face the end wall 30 of the body.

[0062] The peripheral side surface 42 makes it possible in particular to implement the attachment system 12 and the positioning means 48 for attaching / positioning the nozzle 10 on the body 6 .

[0063] The positioning device 48 comprises a male member / female member assembly, for example a pair consisting of a rib and a groove cooperating with the rib, one of the male and female members being arranged on the nozzle 10 and the other of the male and female members being arranged on the body 6. It will be appreciated that the positioning device 48 allows the position of the nozzle 10 to be adjusted relative to the body 6 during the installation of the nozzle 10 on the body 6. In this illustrated example, the nozzle 10 carries a rib forming a male member capable of cooperating with a groove forming a female member carried by the body 6.

[0064] As shown, the positioning devices 48 can be arranged on the peripheral side 44, one on each side of the cavity that contributes to the formation of the reservoir 32 in the longitudinal direction. More specifically, the positioning devices 48 are at least partially arranged on the nozzle 10 on the peripheral side 44 perpendicular to the guide 16 so as to best maintain the position of the guide relative to the end wall 30 of the body 6.

[0065] According to the invention, the attachment system 12 is a weld connecting the nozzle 10 and the body 6, more specifically the inner face 34 of the nozzle and the rear wall 44 of the receiving housing formed in the body 6. Notably, the weld is produced on the peripheral side 44 around its entire periphery, so that the weld is produced around the reservoir 32. Preferably, the weld is an ultrasonic weld. Here, this weld enables the nozzle 10 to be attached to the body 6 by melting of the material, thus preventing the nozzle 10 from being able to detach from the body 6.

[0066] Furthermore, the weld between the nozzle 10 and the body 6 seals the delivery conduit 8 and / or the reservoir 32 from the external environment, preventing any leakage of the cleaning fluid in the connection area between the nozzle 10 and the body 6 .

[0067] like Figure 2 As shown, the weld is located in a single plane. It should be understood that the plane in which the inner face 34, and in particular the peripheral side face 44 of the weld on which the attachment system 12 is formed, lies is parallel to the plane of the face of the body 6 that is welded to the inner face 34 of the nozzle 10, in this case, the rear wall 44 of the housing 28.

[0068] In the example illustrated, the weld between the nozzle 10 and the body 6 is produced in the region of the positioning means 48. It should be understood here that the weld is produced at these positioning means 48 once the nozzle 10 has been mounted on the body 6 and the ribs of the positioning means 48 have been arranged in the grooves of the positioning means 48. The formation of the weld between the nozzle 10 and the body 6 at the positioning means 48 formed by the interacting male and female members promotes the melting of the materials of the nozzle 10 and the body 6 and optimizes the resulting weld.

[0069] According to a specific exemplary embodiment not depicted in the drawings, the nozzle 10 comprises a plurality of channels 14 arranged adjacent to one another along a direction intersecting its main extension direction, the channels 14 each comprising an outlet orifice 20 opening via an inclined plane facing the flow guide 16. It should be understood here that the channels 14 form a spray bar, generating a plurality of cleaning fluids sprayed at different times or simultaneously onto the flow guide 16, which then continue to form different flat spray jets 4.

[0070] The guide 16 may also be formed by a single wall extending facing each of the outlet orifices 20 of the channel 14, or by a plurality of walls, each wall being arranged facing one of the outlet orifices 20 of the channel 14. The latter configuration facilitates the generation of different spray angles for one or more of the spray jets generated by the spray bar.

[0071] Now refer to Figure 3 A second embodiment of the invention is described. Throughout the description of this second embodiment of the invention, elements common to both embodiments will retain the same reference numerals.

[0072] like Figure 3 As illustrated, the nozzle 10 takes the form of a terminal piece arranged at one end of the body 6 .

[0073] More specifically, the nozzle 10 extends along a main direction of elongation, has a spray end 50 where at least the flow guide 16 and the outlet orifice 20 of the channel 14 are located, and an opposite connection end 52 configured to be connected to the body.

[0074] The nozzle 10 comprises a clip-fastening element 54 which constitutes the attachment system 12 and is arranged at the connection end 52 .

[0075] The nozzle 10 here comprises an annular wall which at least partially defines the housing of the reservoir 32 and the body 6. The annular wall is open at the connection end 52 so as to receive the body 6, more specifically the coupling end 58, to which the delivery duct 8 conveying the cleaning fluid opens.

[0076] The clip-fastening element 54 comprises, for example, an elastically deformable member mounted at the connection end 52 of the nozzle 10 and intended to cooperate with a rigid member 56 belonging to the body 6 . Figure 3 The step of mounting the nozzle 10 on the body by means of a translational movement along its main direction of extension is illustrated just before the clip-fastening element 54 is engaged on the rigid member 56 .

[0077] It should be understood here that the nozzle 10 has, in order along the main extension direction, a connecting portion and a spraying portion, the connecting portion contributing to defining the housing in the reservoir 32 and the body 6, the spraying portion comprising the guide 16 and the channel 14. The spraying device according to the invention thus differs from the spraying devices that may have been described previously in that the guide 16 does not abut against the wall of the body 6. However, according to the invention, the nozzle forms an integral assembly comprising the spraying area 38, the channel 14 supplying the cleaning fluid to the spraying area, and the guide defining the spraying area onto which the cleaning fluid is sprayed when it leaves the channel 14. Here again, the combination of all these elements into a single integral part also attached to the body makes it possible to control the arrangement of the channel 14 relative to the guide, thereby ensuring that the outlet orifice 20 and the inclined plane 40 accommodating the outlet orifice are correctly positioned relative to the guide 16.

[0078] Thus, whatever the embodiment described, the invention achieves its set objectives by proposing a nozzle 10 comprising a channel 14 capable of ejecting a cleaning fluid and a guide 16 onto which the cleaning fluid is ejected, wherein the nozzle 10 is formed in one piece. This design makes it possible to ensure that the elements involved in directing the fluid jet to be directed onto the surface to be cleaned are correctly positioned relative to one another and promotes the fluid tightness of the ejection device on which the nozzle is mounted, thereby preventing the cleaning fluid jet from being able to penetrate between the elements constituting the ejection device.

[0079] However, the present invention is not limited to the devices and configurations described and illustrated herein, but also extends to any equivalent devices and configurations and any technically feasible combination of such devices.

Claims

1. A nozzle (10) for a device (1) for spraying a cleaning fluid, the nozzle (10) being intended to be attached to a body (6) of the spraying device (1), the body at least partially defining a duct (8) for conveying the cleaning fluid, characterized in that The nozzle (10) comprises: at least one channel (14), the at least one channel being configured to guide the flow of the cleaning fluid toward a jet outlet of the cleaning fluid; and a wall forming a guide portion (16), the guide portion being arranged facing the jet outlet of the channel (14), the nozzle (10) being formed in one piece.

2. The nozzle (10) according to any one of the preceding claims, further comprising an attachment system (12) configured to secure the nozzle (10) to a body (6) of the spraying device (1).

3. The nozzle (10) according to any one of the preceding claims, wherein The nozzle (10) is produced by injection molding.

4. The nozzle (10) according to any one of the preceding claims comprises a plurality of channels (14), which are arranged adjacent to each other along a direction intersecting their main extension direction, each of the channels (14) comprising an outlet orifice (20), and the guide portion (16) extends towards each of the outlet orifices (20) of the channel (14).

5. The nozzle (10) according to any one of claims 2 to 4, comprising an inner face (34) and an opposite outer face (36), wherein the inner face is configured to face the body (6), a spraying area (38) for spraying the cleaning fluid opens on the outer face, and the attachment system (12) is arranged on the inner face (34).

6. A nozzle (10) as described in any one of claims 2 to 4, extending along a main extension direction, having an injection end (50) and an opposite connecting end (52), at least the outlet orifice (20) of the guide portion (16) and the channel (14) being located at the injection end, and the nozzle (10) includes a clip-on fastening element (54), which constitutes the attachment system (12) and is arranged at the connecting end (52).

7. A spray device (1) for a system for dispensing a cleaning fluid, the spray device (1) comprising: a body (6) which helps define a conduit (8) for conveying the cleaning fluid; And a nozzle (10) according to any one of the preceding claims, the channel (14) being in fluid communication with the delivery conduit (8).

8. The spraying device (1) according to the preceding claim, comprising a reservoir (32) for the cleaning fluid, the reservoir being arranged between the delivery duct (8) and the channel (14) of the nozzle (10), the nozzle (10) at least partially contributing to defining the reservoir (32).

9. The spraying device (1) according to any one of claims 7 or 8 in combination with claim 5, wherein: The body (6) comprises a housing for the nozzle (10), the guide portion (16) having an inner surface (22) facing the outlet orifice (20) of the passage (14) and an outer surface (46) facing a wall of the body (6) which helps define the housing.

10. The spraying device (1) according to any one of claims 7 to 9 in combination with claim 5, wherein: The attachment system (12) is a weld connecting the inner face (34) of the nozzle (10) and the body (6).

11. Spraying device (1) according to the preceding claim, wherein: The weld extends around the periphery of the inner face (34) of the nozzle (10).

12. The spray device (1) according to any one of claims 7 to 11, comprising a positioning device (48), which is used to position the nozzle (10) on the main body (6), and the positioning device (48) comprises at least a rib and a groove cooperating with the rib, one of the rib and the groove is arranged on the nozzle (10), and the other of the rib and the groove is arranged on the main body (6).

13. A system for dispensing a cleaning fluid, the system comprising at least a cleaning fluid reservoir and a spraying device (1) as claimed in any one of claims 7 to 12 for spraying the cleaning fluid, and a delivery conduit (8) for conveying the cleaning fluid and fluidically connecting the cleaning fluid reservoir with the nozzle (10).

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