Solenoid valve unit, cleaning device, and vehicle

Abstract

Solenoid valve unit, cleaning device, and vehicle. Each has one electromagnet (EM1, EM2...EM9, EM 10 ) and each assigned outlet (A1, A2...A9, A 10 A solenoid valve unit (2) is proposed, which comprises at least two solenoid valves (8, 10...) fluidly connectable to one of a plurality of washing points of the vehicle via the outlets (A1, A2...A9, A1), and a housing (4) having at least one central supply line (6) and at least one fluid inlet Z for providing pressurized fluid into the supply line (6), the solenoid valves (8, 10...) being joined to the housing (4) transversely to the supply line (6). 10 ) each assigned to one of the electromagnets (EM1, EM2…EM9, EM 10 It is proposed that the oil can flow transversely to the supply line (6) through an assigned outlet opening (7) of the supply line (6). Furthermore, a cleaning device equipped with such a solenoid valve unit (2) and a vehicle equipped with such a cleaning device are proposed.

Description

[Technical Field]

[0001] The present invention relates to a solenoid valve unit for distributing pressurized fluid to individual washing points of an apparatus, in particular of a vehicle, a washing apparatus, in particular for a vehicle, equipped with such a solenoid valve unit, and a vehicle equipped with such a washing apparatus. [Background technology]

[0002] From Chinese Utility Model No. 214823154 a liquid dispensing device in the form of a solenoid valve block is known. Summary of the Invention [Problem to be solved by the invention]

[0003] The problem on which the invention is based is to improve water distribution for equipment washing, in particular for vehicle washing in particular in connection with an increasing number of vehicle sensors. [Means for solving the problem]

[0004] This problem is solved by a solenoid valve unit as proposed and protected according to claim 1. Furthermore, the use of such a solenoid valve unit, a washing device with such a solenoid valve unit, and a vehicle with such a washing device are proposed and protected (see claims 15, 16, and 17). Advantageous embodiments of the invention are the subject of the dependent claims.

[0005] A solenoid valve unit for distributing pressurized fluid to individual washing points or points to be washed in a device, in particular a vehicle device, is proposed. The solenoid valve unit here comprises at least two solenoid valves, each having an electromagnet and each fluidly connectable to one of a plurality of washing points via an assigned outlet, and a housing having at least one central supply line and at least one fluid inlet for providing pressurized fluid into the supply line. The solenoid valves here are connected to the housing transversely to the supply line.

[0006] It is proposed here that each electromagnet assigned to one of the outlets can be passed transversely to the supply line through the assigned outlet opening of the supply line.

[0007] This allows the pressurized fluid to be supplied to the respective outlets as directly as possible from the central supply line, which advantageously eliminates unnecessary and at the same time significant or noticeable or substantial hydraulic or friction losses (also referred to as through or flow pressure losses) associated with the deflection of the fluid on its path from the central supply line to the respective outlets.

[0008] With the proposed solenoid valve unit, this hydraulic loss can therefore preferably be reduced to a minimum by supplying the fluid to the respective outlets as directly as possible transverse to the supply line.

[0009] This further advantageously allows for the use of relatively low power, more commercially available fluid delivery units to provide pressurized fluid into the supply line.

[0010] The proposed fluid distribution mechanism simplifies the vehicle washing device or vehicle washing system, thereby reducing the costs associated therewith, since it is possible to save on the fluid delivery pump and a separate valve unit, thus resulting in weight savings. Furthermore, the saving of the fluid delivery pump also simplifies the corresponding fluid pump drive control.

[0011] The proposed fluid distribution mechanism also reduces fluid consumption, which again translates into an increase in the vehicle's range that can be achieved by filling such a container or tank with cleaning fluid, particularly for future fully autonomous vehicles that will have a vastly increased number of sensors compared to previous cars, including safety-related sensors, the functionality of which must be guaranteed, especially for safety-related sensors.

[0012] Furthermore, the savings in the number of device or system components required also facilitates a corresponding compactness of such a device or such a system, which in turn requires less overall construction space.

[0013] A cleaning point can be understood here to mean a cleaning point assigned to a vehicle sensor. Here, this cleaning point does not have to be part of the sensor itself; rather, this cleaning point can be arranged at a distance from the sensor to which it is assigned, and can therefore be, for example, a point on the windshield. However, a cleaning point can also be part of a vehicle sensor, for example, a cleaning point assigned to a camera. However, a cleaning point can also be another point not assigned to any of the vehicle sensors, for example, a further point on the windshield mentioned above, a point on a headlight, etc.

[0014] Fluid here is understood to mean a liquid or cleaning solution. In the simplest case, this is water, but preferably an aqueous cleaning solution, i.e., water combined with cleaning additives. The cleaning solution here can also advantageously contain a non-freezing or antifreeze liquid, which lowers the freezing point of such a cleaning solution.

[0015] Fluid is understood here to also mean pressurized air or ambient air suitable for cleaning the aforementioned cleaning surfaces.

[0016] However, fluid is also understood to mean the cleaning liquid mentioned above, in the simplest case a mixture consisting of water and air or ambient air.

[0017] Ambient air here is understood to mean, for purposes of illustration, the air in the vehicle interior, which is filtered and possibly preheated. To filter this air in the vehicle interior, it is preferable to use an air filter that is already installed in the HVAC system (Heating, Ventilation, and Air Conditioning, German: Heizung, Lueftung, Klimatechnik) or air conditioning system. Installing an air filter in the air conditioning system contributes to cost savings.

[0018] The use of such preheated vehicle interior air or warm air has the advantage of preventing the cleaning fluid from freezing in the respective cleaning points, for example cleaning points that may be assigned to the sensor optics, when the outside temperature around the vehicle is low.

[0019] The term lateral (transverse to the supply line) is understood here to mean that the individual fluid connections between the outlet openings of the supply line and the electromagnets through which flow can pass are in or form an obtuse or acute angle to the supply line, i.e. an angle greater or less than 90°, or in a perpendicular arrangement, i.e. an angle of 90°.

[0020] In one embodiment, the individual outlet openings of the supply lines are arranged coaxially with the assigned through-line through which the fluid can flow by means of electromagnets, which increasingly facilitates direct or nearly direct supply of fluid to the respective outlet transversely to the supply line.

[0021] In a further embodiment, two solenoid valves arranged opposite each other transversely to the supply line and between which there is a supply line form a modularly extended solenoid valve pair, the common housing section of which is extended at one or both ends of the supply line by a joint connection and / or materially coupled connection by one housing section of a further solenoid valve pair.

[0022] Such a solenoid valve pair is here a simple basic unit that provides the basis for a so-called modular system in the sense of the smallest possible solenoid valve unit, from which any number of solenoid valve pairs of this type can advantageously be expanded or organized into correspondingly larger solenoid valve units as required.

[0023] The mating connection between the two housing sections joined together can here be configured, for example, in the form of a so-called bayonet connection.

[0024] Similarly, the individual solenoid valves may also be joined and / or connected to the assigned or common housing section by means of joint connections (for example in the form of the aforementioned bayonet connections) and / or material-bonding connections.

[0025] In a further embodiment, the electromagnets are in fluid communication with the through-line via a valve piston acting as a respective closing body present therein, where it is proposed that a spring extends from the assigned electromagnet into this through-line, via which the valve piston applies a preload to the assigned outlet opening of the supply line when the electromagnet is in a de-energized state, thereby closing this outlet opening in a fluid-tight manner.

[0026] In a further embodiment, the through-pipe line of the valve piston divides or branches into at least two pipe line segments towards and around the closing section of the valve piston, wherein the closing section together with the assigned housing section of the solenoid valve unit together form a pipe line segment.

[0027] The closing sections of the valve piston are here at least section-by-section rotationally symmetric, i.e. convex, concave and / or conically shaped, in order to close the assigned outlet opening of the supply line in a fluid-tight manner. The closing sections can here, for example, be embodied in the shape of a sphere.

[0028] It is proposed here that the surface of the closing section, which can be pressurized on the supply line side, is designed as small as possible, at least for each section, to be rotationally symmetrical, i.e., convex, concave, and / or conically shaped, since minimizing the pressurized surface of the closing section allows for a correspondingly cost-effective design of the electromagnet, since the minimum magnetic force required to operate the individual solenoid valves is sufficient to move the respective valve piston into the open position against the spring acting on it or restoring it.

[0029] The valve piston here is made of a magnetic material, for example a plastic mixed with ferromagnetic particles or magnetized stainless steel, etc. In the case of a plastic mixed with magnetic particles, the closing section can be injection molded or materially connected to this plastic, or alternatively can be compression molded thereto.

[0030] In a further embodiment, the solenoid valve unit has a central circuit board for the contact connection of the individual solenoids. Such a circuit board can be advantageously attached to one side or one section of the solenoid valve unit, for example to a housing forming a supply line, in a space-saving manner by means of a bonded and / or materially bonded connection. In this case, a bus-controlled central electronic control unit can be configured or arranged on the printed circuit board, which allows the individual solenoid valves to be controlled without the need for separate cables.

[0031] In a further embodiment, the solenoid valve unit comprises at least one fluid delivery unit for providing pressurized fluid.

[0032] The fluid delivery unit can here also be a liquid delivery pump having at least one pump stage or a so-called pump-compressor unit having at least one pump stage and at least one compressor stage, which is speed-open- and / or speed-closed-loop controlled to deliver liquid and / or air.

[0033] In a further embodiment, the solenoid valve unit comprises at least one first fluid dispensing unit and a second fluid dispensing unit of the above-described manner for providing pressurized fluid, which may here be fluidly arranged in series and / or in parallel with each other.

[0034] Furthermore, it is proposed to use a solenoid valve unit of the above-mentioned type, in which at least one of the plurality of solenoid valves is not fluidly connected to any of the vehicle's washing points in order to reliably enable or ensure pressure compensation towards the surrounding environment in the event of freezing of fluid in the central supply line.

[0035] Also proposed is a washing device for a vehicle that includes the above-described solenoid valve unit.

[0036] Additionally, vehicles are proposed that are equipped with such cleaning devices.

[0037] Vehicle is understood here to mean any type of vehicle operating by means of an internal combustion engine and / or an electric motor, but in particular passenger cars and / or utility vehicles, preferably vehicles that operate partly autonomously, in particular fully autonomously.

[0038] The invention is explained in more detail below with reference to the drawing representations. Further advantageous developments of the invention become apparent from the dependent claims and the following description of preferred embodiments. [Brief explanation of the drawings]

[0039] [Figure 1] FIG. 1 is a first perspective view showing a proposed solenoid valve unit. [Figure 2] FIG. 2 is a second perspective view of the solenoid valve unit shown in FIG. [Figure 3] FIG. 2 is a third perspective view of the solenoid valve unit shown in FIG. [Figure 4] FIG. 4 is a perspective view of a pair of solenoid valves of the solenoid valve unit shown in FIGS. 1 to 3. [Figure 5] FIG. 4 is a cross-sectional view of a solenoid valve of the solenoid valve unit shown in FIGS. 1 to 3. DETAILED DESCRIPTION OF THE INVENTION

[0040] The proposed solenoid valve unit 2 is provided for a vehicle washing device and is used to supply pressurized liquid or washing fluid to the individual washing points of the vehicle. This solenoid valve unit 2 is shown here in the illustrated outlets A1, A2 ... A9, A 10 It functions as a distributor that distributes the liquid to the individual cleaning points via one of the

[0041] The solenoid valve unit 2 here comprises a housing 4 having an inlet Z, through which liquid provided from a liquid delivery pump or pump (not shown here) is supplied to a central supply pipe 6 within the housing 4. Here, in FIG. 1, a total of ten solenoid valves 8, 10... are shown as components of the solenoid valve unit 2, merely by way of example. Also, on the top surface of the solenoid valve unit 2 shown in FIG. 1, a circuit board 12 arranged between the individual solenoid valves 8, 10... is provided in a space-saving manner on the housing 4, and this circuit board 12 is connected to the individual electromagnets EM1, EM2... EM9, EM10 of the respective solenoid valves 8, 10... 10 These electromagnets EM1, EM2...EM9, EM 10 Via a central electronic control unit arranged on a circuit board 12, the individual solenoid valves 8, 10... can be individually controlled accordingly, while avoiding the need for separate cables.

[0042] 2 shows, by way of example, possible ways of fixing or fastening the individual solenoid valves 8, 10... to the housing 4 in fixed positions, in particular by means of individual clamps 14 respectively provided between two mutually opposing solenoid valves 8, 10... between which the housing 4 lies, thereby stabilizing or fixing these solenoid valves 8, 10... to the housing 4. These clamps 14 here engage in undercuts or recesses in the assigned housing section, in particular in the plastic housing section of each solenoid valve 8, 10..., thereby reliably stabilizing or fixing the individual solenoid valves 8, 10... to the housing 4.

[0043] Instead of individual clamps 14, it is also possible to provide a single, correspondingly larger clamp for this fixing purpose, which can also engage in the above-mentioned undercuts or recesses in a similar manner via corresponding gripping sections.

[0044] In addition to or as an alternative to such a form-locking connection, the individual solenoid valves 8, 10... can also be reliably fixed in position via local welding of each solenoid valve 8, 10... to the housing 4 or via at least one local material-locking connection in each case.

[0045] FIG. 3 shows the outflow sections A1, A2...A9, A 10 Each one of the electromagnets EM1, EM2...EM9, EM 10 can flow transversely to the supply line 6 as well as almost directly through the assigned outlet openings 7 of the supply line 6. Thus, starting from the supply line 6, the respective outlets A1, A2 ... A9, A 10 There is little or no significant deflection of the liquid until the flow, whereby advantageously the hydraulic pressure losses (also referred to as flow pressure losses) that accompany such deflection are also eliminated or reduced to a minimum absolute value.

[0046] The proposed solenoid valve unit 2 therefore has individual electromagnets EM1, EM2 ... EM9, EM 10 This allows the flow of electricity as directly as possible.

[0047] Such individual electromagnets EM1, EM2...EM9, EM 10 For the most direct possible flow of the liquids, it is further proposed that the individual solenoid valves 8, 10... are arranged perpendicular to the supply line 6 and connected to the housing 4. This allows for a very compact or space-saving construction solution of the liquid distribution system.

[0048] Also, such individual electromagnets EM1, EM2...EM9, EM 10 The direct flow of the electromagnets EM1, EM2...EM9, EM 10 This is facilitated by the fact that the pipes are arranged coaxially with the assigned through-pipe passages.

[0049] The solenoid valve unit 2 shown in Figures 1 to 3 is a liquid distribution mechanism that prevents liquid leakage inside the housing 4. The valve piston 18 having a spherical closing section 26 is movable relative to the housing 4, 4g, but the closing section 26 forms a gap to the assigned housing section 4g only when the assigned valve piston 18 is in the open position, allowing pressurized fluid to flow through this gap. This eliminates the need for a fluid delivery pump that must contain or contain such liquid leakage. Therefore, the proposed solenoid valve unit 2 contributes to energy savings.

[0050] Furthermore, the solenoid valve unit 2 shown in Figures 1 to 3 is a very compact constructional solution for the liquid distribution mechanism, or a constructional space-saving solution.

[0051] A further advantage of the proposed solenoid valve unit 2 emerges from its modular structure (see FIG. 4), which offers a high degree of flexibility.

[0052] Each of the two solenoid valves 8, 10... arranged opposite each other transversely to the supply line 6 and between which the supply line 6 is located forms a modularly extended solenoid valve pair, the common housing section 4g of which is extended at one or both ends of the supply line 6 by a joint connection and / or materially coupled connection by one housing section 4g of a further solenoid valve pair.

[0053] The mating connection between the two mutually joined housing sections 4g is here exemplarily configured in the form of a bayonet connection.

[0054] Similarly, in further embodiments not shown here, the individual solenoid valves 8, 10... can also be joined or connected to the assigned housing section 4g using such a bayonet connection and thereby fixed relative to the housing section 4g or the housing 4.

[0055] The connecting connections between the individual solenoid valves 8, 10... and the respectively assigned housing segment 4g, as well as between the individual housing segments 4g, are configured to be sufficiently fluid-tight by corresponding seals, for example in the form of O-rings.

[0056] This proposed modularity allows for the flexible use of a so-called modular system, whereby any size solenoid valve unit 2 in the sense of a liquid distribution unit can be assembled according to the requirements or needs in a need-based and cost-optimized manner.

[0057] Electromagnet EM1, EM2…EM9, EM 10 are in communication with the through-pipe 22 via the valve piston 18 which functions as a closing body present therein (see FIG. 5). 10Here, a coil spring 20 extends through the through-pipe 22, and the valve piston 18 is connected to the electromagnets EM1, EM2, . . . EM9, EM 10 In the de-energized state, a preload is applied to the assigned outlet opening 7 of the supply line 6, closing this outlet opening in a fluid-tight manner.

[0058] The through-flow conduit 22 branches or separates into at least two conduit sections 23, 25 towards and around a spherically shaped closing section 26 of the valve piston 18. Here, this closing section or this sphere 26 together with the assigned plastic housing section of the respective solenoid valve 8, 10... and the assigned plastic housing section of the respective common housing section 4g together form the conduit sections 23, 25. The individual valve pistons 18 here are advantageously made from a plastic containing magnetic particles, for example ferromagnetic magnetic particles, which are solidly connected or injection-molded into the respective sphere 26.

[0059] This sphere 26 therefore represents a hydraulic section which, together with the respective pipe section 23, 25, produces a slight deflection of the liquid. Furthermore, the respective solenoid valves 8, 10... or the respective electromagnets EM1, EM2... EM9, EM 10 There is nothing that would obstruct the direct flow of the aforementioned.

[0060] Alternatively to such plastic molding, the valve piston 18 can be formed, for example, from a ferromagnetic metal or stainless steel, magnetic steel and can be bonded and / or materially connected to the sphere 26, or can be bonded and / or materially connected to an alternative closing section which has, at least for each section, a rotor section that is formed convexly, concavely and / or conically for closing the assigned outlet opening 7.

[0061] By using such a sphere 26, or alternatively a closing section formed thereon and having a concave, convex and / or conically formed closing surface, the allocated outlet opening 7 of the supply line 6 can be reduced to a minimum. Thus, even in the closed position of the valve piston 18, the closing surface of the valve piston 18 that is pressurized by the liquid on the side of the supply line 6 can be minimized. Concomitantly, the reset coil spring 20 and the respective electromagnets EM1, EM2 ... EM9, EM 10 can be designed so that the force is optimized. This also makes it possible to keep the cost of such a solenoid valve unit 2 as low as possible, since it is the individual electromagnets EM1, EM2 ... EM9, EM that significantly affect and increase the cost. 10 That's why.

[0062] The proposed valve piston 18 or its closing section or sphere 26 can therefore be designed to have as small a closing surface as possible on which the pressurized liquid in the supply line acts, thereby enabling a force- and stroke-optimized design or dimensioning of the individual solenoid valves 8, 10...

[0063] 5 shows a solenoid valve 8 with an electromagnet EM1, which includes a coil body 16 with a wire or coil winding, for example made of copper, and a wire winding or coil support 17 made of plastic that houses the wire winding. The wire winding support 17 is here injection molded together with the wire winding. At one of the end faces of the wire winding support 17, a first wire or coil end 24 and a second wire or coil end 26 extend through the plastic of the wire winding support 17 to, for example, the circuit board 12, where the wire ends 24, 26 are in contact with each other. Alternatively, the electromagnets EM1, EM2...EM9, EM1 shown in FIGS. 1 to 3 may be formed of a plastic material. 10 Each of these can be equipped with its own plug socket, via which the wire ends can be connected to corresponding plugs.

[0064] The electromagnet EM1 further comprises a metallic return pot 30, for example made of iron or steel, to which the coil body 16 is connected. The return pot 30 here comprises a first central and socket-like pot section 32, which together form a through-pipe 38 to the outlet A1 and thus the through-pipe through the electromagnet EM1, a second pot section 34 adjacent to the first pot section 32, and a third pot section 36 adjacent to the second pot section 34 and connected to the coil body 16. In the through-pipe through the electromagnet EM1, the coil spring 20 is arranged in a preloaded state against a first spring seat in the through-pipe 38 and a second spring seat in the through-pipe 22, so that when the electromagnet EM1 is de-energized, the valve piston 18 preloads against the assigned outlet opening 7 of the supply line 6 and closes this outlet opening in a fluid-tight manner.

[0065] 5 is formed by injection molding in sections using plastic, which forms on the one hand a plastic section that can be joined to the common housing section 4g and through which the valve piston 18 is inserted into the solenoid valve 8 up to just before the socket-like pot section 32, as well as a plastic section for the outlet part A1 of the solenoid valve 8. This plastic injection molding not only connects the metal pot section that forms the return pot 30 to the coil body 16, but also protects these metal sections or components from corrosion.

[0066] In the plastic section of the solenoid valve 8 which can be joined to the common housing section 4g, further undercuts or recesses 28 for interaction with the aforementioned clamp 14 as well as undercuts or recesses 29 for accommodating a sealing ring, for example in the form of an O-ring, can be discerned.

[0067] The gap S shown between the valve piston 18 and the pot section 32 limits the possible stroke of the valve piston 18. In the event of freezing of the liquid in the central supply line 6, this gap S advantageously ensures or enables so-called freeze compensation or so-called freeze protection of the solenoid valve unit 2, by allowing a movement of liquid through or over the valve piston 18 due to freezing in order to avoid damage due to freezing of the respective solenoid valve 8 and / or supply line 6.

[0068] Insofar as the proposed solenoid valve unit 2 provides for a corresponding compensation or pressure compensation possibility for each of the solenoid valves 8, 10..., the individual solenoid valves 8, 10... can thereby resist damage caused by freezing of the proposed solenoid valve unit 2.

[0069] It is also proposed to advantageously use the aforementioned solenoid valve unit 2 in a configuration in which at least one of the plurality of solenoid valves 8, 10... is not or is not connected to any of the above-mentioned washing points of the vehicle, so that damage due to freezing of the solenoid valve unit 2 can be reliably avoided or prevented, since no liquid is present on the outlet side of the disconnected solenoid valves and therefore cannot freeze, and this allows reliable pressure compensation towards the surrounding environment to avoid damage due to freezing of the respective solenoid valve 8 and / or the supply line 6.

[0070] The individual plastic housing parts 4g as well as the individual plastic sections of the respective solenoid valves 8, 10... are here produced, for example, from a thermosetting or thermoplastic plastic, for example a PPS-GF material.

[0071] 1 to 3, the solenoid valve unit 2 shown in Fig. 4 represents a pair of solenoid valves 8, 10, etc., which are arranged opposite each other at an angle of 180° and coaxially with each other. This arrangement allows for simple fixing of the two solenoid valves 8, 10, etc. to a common housing section 4g, for example by means of the aforementioned clamp 14.

[0072] Alternatively to such an arrangement, the solenoid valves 8, 10... may be arranged opposite each other and connected to a common housing section 4g, so as to form an obtuse angle between them of greater than 90° and less than 180°, or an acute angle between them of less than 90°, without losing the advantages of the modular system described above. This allows the proposed solenoid valve unit 2 to be designed more flexibly according to the structural space requirements.

[0073] In a further embodiment (not shown here), at least one housing section 4g of one of the solenoid valve pairs shown in Figures 1 to 3 has a so-called separating wall, which can divide the central supply line 6 shown in Figure 3 into at least two regions. In this embodiment, the housing 4 has at least one first supply line or first supply line section and a second supply line or second supply line section, each with an assigned inlet.

[0074] This allows for operation in at least two different pressure ranges with at least one assigned liquid delivery pump each, i.e., for example, a first supply line section can be operated at, for example, 3 bar and a second supply line section can be operated at, for example, 5 bar, which is a further aspect of the flexibility of the proposed solenoid valve unit 2.

[0075] The proposed solenoid valve unit 2 is a liquid distribution mechanism or a kind of liquid distributor with minimally reduced flow or hydraulic pressure losses.

[0076] The proposed solenoid valve unit 2 therefore facilitates high performance of vehicle washing devices equipped with such a solenoid valve unit 2. The high liquid pressure available in this case advantageously minimizes the liquid consumption of the vehicle washing device, so that the liquid delivery pump used here essentially only needs to compensate for minimal losses in the solenoid valve unit 2.

[0077] Although the above description describes exemplary embodiments, it should be noted that many modifications are possible. In addition, it should be noted that the exemplary embodiments are merely examples and are not intended to impose any limitations on the scope of protection, application, and structure. Rather, the above description provides a guideline for those skilled in the art to implement at least one exemplary embodiment, and various modifications, particularly with respect to the function and arrangement of the described components, such as those resulting from the combination of the claims and their equivalent features, can be made without departing from the scope of protection.

Claims

1. A solenoid valve unit (2) for distributing pressurized fluid to the individual cleaning points of the device, Each one has one electromagnet (EM １ , E.M. ２ …EM ９ , E.M. １０ ) and each assigned outlet (A １ , A ２ …A ９ , A １０ at least two solenoid valves (8, 10...) that are fluidly connectable to one of a plurality of cleaning points via a a housing (4) having at least one central supply line (6) and at least one fluid inlet (Z) for providing the pressurized fluid into the supply line (6); In the solenoid valve unit (2), the solenoid valves (8, 10, ...) are joined to the housing (4) transversely to the supply pipe (6), The outflow section (A １ , A ２ …A ９ , A １０ ) are assigned to one of the electromagnets (EM １ , E.M. ２ …EM ９ , E.M. １０ ) can flow transversely to the supply line (6) through an assigned outlet opening (7) of the supply line (6).

2. The outlet opening (7) allows the fluid to pass through the electromagnet (EM １ , E.M. ２ …EM ９ , E.M. １０ 2. The solenoid valve unit (2) according to claim 1, wherein the solenoid valve unit (2) is arranged coaxially with respect to a through-flow pipe through which a flow can pass.

3. 3. The solenoid valve unit (2) according to claim 1, wherein each of two solenoid valves (8, 10, ...) arranged opposite each other transversely to the supply line (6) and between which the supply line (6) is present form a modularly extended solenoid valve pair, the common housing section (4g) of which is extended at one or both ends of the supply line (6) by a joint connection and / or a materially interlocking connection by one housing section (4g) of a further solenoid valve pair.

4. 4. The solenoid valve unit (2) according to claim 1, wherein the individual solenoid valves (8, 10...) are joined / connected to the housing (4, 4g) by means of a joint connection and / or a materially bonded connection.

5. 5. The solenoid valve unit (2) according to claim 3 or 4, wherein the mating connection is configured in the form of a bayonet connection.

6. The electromagnet (EM １ , E.M. ２ …EM ９ , E.M. １０ 6. The solenoid valve unit (2) according to claim 1, wherein the valves (10, 12) are in fluid communication with the through-pipe (22) via a valve piston (18) located therein and functioning as a closing body.

7. The assigned electromagnet (EM １ , E.M. ２ …EM ９ , E.M. １０ ) through the through-pipe (22), and the valve piston (18) is connected to the electromagnet (EM １ , E.M. ２ …EM ９ , E.M. １０ 7. The solenoid valve unit (2) according to claim 6, wherein when the solenoid valve unit (2) is in a de-energized state, a preload is applied to the assigned outlet opening of the supply line (6) to close the outlet opening in a fluid-tight manner.

8. 8. The solenoid valve unit (2) according to claim 6 or 7, wherein the through pipe (22) branches into at least two pipe sections (23, 25) around a closing section (26) of the valve piston (18) toward the closing section (26), the closing section (26) forming together with an assigned housing section of the solenoid valve unit the pipe sections (23, 25).

9. 9. The solenoid valve unit (2) according to claim 8, wherein the closing sections (26) are formed rotationally symmetrically at least for each section in order to fluid-tightly close the assigned outlet opening (7) of the supply line (6).

10. 10. The solenoid valve unit (2) according to any one of claims 6 to 9, wherein the valve piston (18) is made of a magnetic material.

11. 11. The solenoid valve unit (2) according to claim 10, wherein the valve piston (10, 12) is made from a plastic containing magnetic particles materially connected to the closing section (26).

12. The solenoid valve unit (2) is configured to １ , E.M. ２ …EM ９ , E.M. １０ 12. The solenoid valve unit (2) according to claim 1, further comprising a central circuit board (12) for contacting the solenoid valve unit (2).

13. The solenoid valve unit (2) according to any one of claims 1 to 12, wherein the solenoid valve unit (2) comprises at least one fluid delivery unit for providing the pressurized fluid.

14. The solenoid valve unit (2) according to claim 13, wherein the solenoid valve assembly (2) comprises at least one first fluid dispensing unit and a second fluid dispensing unit for providing the pressurized fluid.

15. 15. The solenoid valve unit (2) according to claim 14, wherein the fluid delivery units are arranged fluidly in series and / or in parallel with one another.

16. 16. Use of a solenoid valve unit (2) according to any one of claims 1 to 15, wherein at least one of the plurality of solenoid valves (8, 10...) is not in fluid communication with any of the washing points of the vehicle in order to enable pressure compensation towards the surrounding environment in the event of freezing of the fluid in the central supply line (6).

17. A washing device for a vehicle, comprising a solenoid valve unit (2) according to any one of claims 1 to 15.

18. A vehicle comprising the cleaning device according to claim 17.

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