Atomizing system with a silicone nozzle field

Description

[0001] The electrohydrodynamic atomization of fluids is gaining increasing importance in the field of coating processes. For example, a device is known from PCT / EP2018 / 060117, which is also published as DE 10 2018 109 452 A1, which uses electrohydrodynamic atomization to apply, for example, care products such as sunscreen to a person's body.

[0002] WO 2018 / 032560 A1 discloses a spray mechanism with an adjustable spray angle, comprising a water inlet base, a connecting plate, several flexible spray tubes, sliding blocks, adjustment assemblies, a cover plate, and the like. The adjustment assemblies drive the sliding blocks, which are threaded to the adjustment assemblies, into an axial reciprocating motion by the rotation of a drive spindle rod.

[0003] DE 198 30 801 A1 relates to a device for ejecting liquid with several rotor nozzles combined into a unit, wherein each rotor nozzle comprises a rotor chamber formed in a nozzle housing, which has an inlet opening at one axial end and an outlet opening for the liquid at the other end, and a rotatably driven rotor arranged in the rotor chamber at an inclination relative to its longitudinal axis and supported on the inner wall of the rotor chamber, which has a nozzle area supported in a cup bearing at its end facing the outlet opening and an inlet opening at the opposite end.

[0004] DE 10 2014 200 741 A1 relates to a shower head with a spray-forming fluid outlet structure, which has a plurality of spray outlet units, at least two of which are designed as multi-channel spray outlet units, each with at least one first outlet channel and at least one second outlet channel separated from the first fluid-fluid-separated one. Furthermore, the shower head has a fluid guide configured to direct a fluid supplied to the shower head either to the first outlet channels or to the second outlet channels.According to the invention, a minimum distance between the outlet channels of a respective multi-channel beam outlet unit is smaller than a minimum distance between the outlet channels of any two multi-channel beam outlet units and / or in at least one multi-channel beam outlet unit, a second outlet channel or a group of several second outlet channels is arranged to at least partially surround a first outlet channel.

[0005] From DE 10 2018 109 452 A1, an electrostatic atomizer for liquids is known, wherein the atomizer comprises a housing, an electrical energy source, an activation agent, control electronics, a high-voltage source, a liquid tank, a conveying device and atomizing nozzles, wherein the conveying device is arranged between the liquid tank and the atomizing nozzles, wherein the conveying device is connected to the liquid tank by a first line and wherein the conveying device is connected to the atomizing nozzles by a second line, so that the conveying device draws liquid from the liquid tank and conveys it to the atomizing nozzles.

[0006] From US Patent 2004 / 021017 A1, an electrostatic spraying device is known which is configured and arranged such that a liquid composition is electrostatically charged and dispensed from a reservoir to a dispersion point, wherein the device comprises: a reservoir configured to hold the reservoir of liquid composition, a nozzle for dispersing the liquid composition, the nozzle being located at the dispersion point, a channel arranged between the reservoir and the nozzle, the channel enabling electrostatic charging of the liquid composition as the liquid composition moves within the channel, a power source to supply an electrical charge, a high-voltage power supply device, the high-voltage power supply device being electrically connected to the power source, and a high-voltage electrode.wherein the high-voltage electrode is electrically connected to the high-voltage supply device, wherein a section of the high-voltage electrode is arranged between the reservoir and the nozzle, the high-voltage electrode electrostatically charges the liquid composition within the channel at a charging point, and a nozzle channel is arranged between the charging point and the nozzle, wherein the length of the nozzle channel is subject to the following specific ratio.

[0007] US patent 2018 / 0361405 A1 discloses an electrostatic spray module for changing inserts in the workshop or on-site; the user simply opens a cover, exposing the nozzles. The nozzle inserts can then be removed and replaced with new ones.

[0008] However, a large number of atomizing nozzles has proven to be disadvantageous in the application of electrohydrodynamic atomization. Furthermore, the necessary cleaning of the systems often presents a problem, as the high voltage required for electrohydrodynamic atomization makes simple cleaning with water impractical.

[0009] The object of the invention is therefore to improve the function of an electrohydrodynamic atomizer and, in particular, to simplify cleaning.

[0010] This problem is solved by the subject matter of the invention according to claim 1. Advantageous further developments and expedient embodiments are specified in the pending claims.

[0011] The invention relates to an atomizing nozzle system with an electrohydrodynamic atomizer, wherein several nozzles are included in a nozzle cap and, to form a nozzle, at least one nozzle opening, at least one nozzle channel and at least one nozzle socket are included, wherein the nozzle cap is arranged on at least one carrier, wherein the carrier includes a nozzle connector for each nozzle socket, wherein the nozzle cap is detachably attached to the carrier and wherein the nozzle cap is formed in one piece.

[0012] The nozzle cap can be removed from the electrohydrodynamic atomizer unit by detaching it from the carrier. zBThey can be cleaned with water or other solvents. Replacement after wear is also easily accomplished by the user. Furthermore, alternative nozzle caps can be used, whose geometries and other properties are adapted to different fluids to be atomized.

[0013] A preferred embodiment provides that the nozzle cap is made at least partially from a flexible material, in particular from a flexible electrical insulator, preferably a silicone.

[0014] The use of a flexible material, zB The use of silicone allows dried fluid residues to be removed simply by deforming the surface. zB They can be removed by wiping them with a finger, as the hardened residues crumble due to the deformation and can therefore be removed.

[0015] Furthermore, the use of an insulator has surprisingly proven advantageous for electrohydrodynamic atomization. The atomization effect experienced by the high-voltage charged liquid is improved by guiding it through an electrically insulating nozzle channel, leading to greater process reliability in electrohydrodynamic atomization applications, for example, when applying care products such as sunscreen.

[0016] Another preferred embodiment provides that the carrier is made of a rigid material, preferably plastic, e.g. PC, ABS, PE, PET or PP or the like.

[0017] A rigid support allows for precise and reliable attachment of the flexible nozzle cap, for example via rigid elements for alignment and fastening.

[0018] Such rigid elements can be formed by projections or structures, e.g. collars or mushroom heads, but also by tongue and groove elements, into which corresponding counter-structures of the nozzle cap then engage, in particular snapping elastically.

[0019] An advantageous further development of an embodiment provides that the nozzle cap is held on the carrier by elastic tensioning of locking elements or tensioning of a flexible material, preferably by positive locking.

[0020] The use of a flexible, rubber-like nozzle cap, preferably made of silicone, allows it to be elastically clamped onto the carrier and thus removed without tools. Even in the case of an inflexible or semi-flexible nozzle cap, a simple, tool-free connection can be achieved, for example, using snap-fit ​​elements.

[0021] Another preferred embodiment provides that the nozzle cap comprises a base structure, in particular a base plate or a base frame, on which a nozzle structure for forming the atomizing nozzles is arranged, wherein the base structure is made of a more rigid material compared to the nozzle structure, which is preferably made of silicone, in particular PC, ABS, PE, PET or PP or the like, and preferably comprises at least one connecting element, in particular a snap-fit ​​element, for forming a preferably detachable connection with the carrier.

[0022] A flexible, bendable nozzle geometry, formed on a more rigid base structure, allows for the production of a nozzle geometry made of, for example, silicone, without having to forgo mechanical locking elements for a detachable connection to a carrier. Furthermore, this improves the feel during disassembly and assembly of the nozzle cap, as a certain degree of dimensional stability is achieved. The base structure can be designed as a type of plate containing openings for the nozzle connections and / or nozzle bushings, or as a frame structure that provides support and stabilization only at the necessary points.

[0023] A further preferred embodiment provides that the nozzle cap comprises at least three nozzle openings, each with an associated nozzle channel and an associated nozzle bushing, wherein the nozzle openings are maximally spaced apart from one another in a nozzle area, in particular arranged consecutively along a zigzag line.

[0024] It has been found that an arrangement of at least three nozzle openings results in reliable atomization. A higher number of nozzle openings is also conceivable, although the number of nozzle openings is preferably in the single digits.

[0025] However, it is important that the nozzle openings are spaced as far apart as possible on the available area of ​​the nozzle cap, i.e., that they maintain the greatest possible distance between them. A zigzag arrangement on a surface is desirable, as this maximizes the distance between the nozzle openings. When determining the spacing of the nozzle openings, the geometries of the nozzles themselves must also be considered, since an opening can never be located directly at the edge of an area, but is usually surrounded by a nozzle body that houses the nozzle channel.

[0026] An advantageous further development is further characterized in that the nozzle opening of the nozzle projects out of the plane of the nozzle cap, wherein a flank of the projecting nozzle is preferably designed as a continuously curved curve and in particular the flank of the nozzle is asymmetrical on one flank side with respect to an opposite flank side of the nozzle, in particular having a curvature at least 1.5 times greater.

[0027] The nozzle opening, which is supported by a nozzle body, projects out of the plane of the nozzle cap to define the nozzle geometry, in particular to accommodate a nozzle channel inside the nozzle body. The plane of the nozzle cap is to be understood as the essentially flat surface on which the nozzle geometry is arranged. The raised edge regions shown in the later embodiment are disregarded in this context.

[0028] The flanks or side walls of the nozzle body follow a continuously curved path. Due to their placement at the greatest possible distance, less installation space is available on the flank side of the nozzle body closest to the edge of the nozzle cap than on the opposite side. Therefore, the curvature can taper more gently on the side furthest from the edge, as will be illustrated in the following embodiment. This results in smoother transitions, which are advantageous during cleaning.

[0029] Another advantageous embodiment provides that the nozzle cap is manufactured using injection molding.

[0030] Such a manufacturing process allows for cost-effective and efficient production of the component(s).

[0031] Furthermore, another advantageous embodiment provides that the nozzle cap is manufactured using a multi-component injection molding process or is otherwise joined together, e.g. by adhesive bonding or vulcanization processes.

[0032] This manufacturing process allows for cost-effective and efficient production of the component(s). Furthermore, the two aforementioned manufacturing methods prevent accidental separation of the nozzle cap components, thus providing the user with greater reliability.

[0033] It is further provided that in one embodiment the nozzle cap with an elastic section at the nozzle connection surrounds a connecting flange and forms a seal on it via elastic deformation.

[0034] Due to its detachability, the nozzle cap must form a sealing connection to the nozzle port of the carrier. This is preferably achieved by an elastic section, for example made of silicone, sealingly surrounding the connection flange of the nozzle port, whereby the tension of the elastic section must withstand the delivery pressure of the fluid to be atomized during operation of the electrohydrodynamic atomizer.

[0035] A preferred embodiment in this respect provides that the nozzle connection has a cylindrical connection flange, in particular with a circumferential sealing ring, and the nozzle bushing forms a corresponding cylindrical receptacle to provide an interlocking sealing positive connection.

[0036] The sealing ring can also be designed as a bead directly formed on the connecting flange, especially a bead structure produced directly in injection molding, in order to avoid additional components or work steps.

[0037] A corresponding cylindrical connection flange can be manufactured easily and reliably during the production process and offers the user a simple connection of the fluid system with a reliable sealing effect during the assembly and disassembly of the detachably connected nozzle cap.

[0038] The shaped sealing bead, which is firmly connected to the connection flange, makes it possible for the flexible soft material, especially silicone, of the nozzle cap to form a sufficient clamping force with the sealing bead on the connection flange in addition to the sealing, so that the nozzle cap is held on the carrier by clamping it to the sealing bead.

[0039] An alternative preferred embodiment provides that the nozzle connection has a conical connection flange, and the nozzle bushing forms a corresponding conical receptacle to provide an interlocking sealing positive connection.

[0040] Furthermore, the conical connection flange allows for a preferential centering effect during assembly, whereby the opposing conical flanks of the connection flange and nozzle bushing form a sealing contact.

[0041] Another preferred embodiment provides that the nozzle channel is shaped as a conical section or as a spherical cap and in particular forms an end channel towards the nozzle opening, wherein the end channel is preferably designed as a cylindrical or conical pipe section.

[0042] Such a nozzle channel design is the subject of application DE 10 2018 133 406.0, to which reference is hereby made. A corresponding nozzle channel design provides an advantageous formation of a free jet of the fluid to be atomized before the electrohydrodynamic atomization effect begins due to the applied high voltage.

[0043] It is particularly preferred that the nozzle opening of an atomizing nozzle is between 0.1 mm and 0.3 mm, preferably 0.2 mm, and that the length of the nozzle channel is between 4 mm and 6 mm, preferably 5.5 mm.

[0044] A suitable embodiment of the atomizing nozzle system provides that an electrical contact element, in particular a high-voltage contact, is formed in the nozzle connection, wherein the contact projects into a fluid channel, preferably the fluid channel is led through the contact, and in particular the distance between the electrical contact element and the nozzle opening is between 5 mm and 20 mm, preferably between 11 mm and 15 mm, in particular 14 mm.

[0045] To perform electrohydrodynamic atomization, it is necessary to apply a high voltage to the fluid to be atomized. This high voltage is particularly advantageously applied in the area of ​​the support, as otherwise contacts would again have to be provided in the nozzle cap.

[0046] It is particularly advantageous to design a high-voltage contact as an electrical contact element that projects into the fluid channel. The fluid channel includes a channel through the nozzle bushing. The electrical contact element is preferably designed to be positioned in the fluid flow path, and in particular, to be flowed through by the fluid via an opening in the electrical contact element. This ensures optimal application of the high voltage and the associated charging of the fluid, resulting in a reliable spraying process.

[0047] Electrohydrodynamic atomization is based on the instability of electrically chargeable fluids, particularly sufficiently electrically conductive fluids under high voltage, in a strong, inhomogeneous electric field. The fluid is subjected to a high voltage. This causes the fluid to deform into a cone, from the apex of which a thin jet is emitted, immediately disintegrating into a spray of finely dispersed droplets. Under certain conditions, in Taylor cone mode, the droplets exhibit a narrow size distribution.

[0048] Furthermore, the atomizing effect can be improved by the interaction with a forced hydraulic supply of a fluid flow, e.g. a pump.

[0049] The invention will be explained in more detail with reference to the exemplary embodiments shown below. However, it is not limited to the embodiments shown.

[0050] They show Fig. 1. a schematic representation of an electrohydrodynamic atomizer; Fig. 2. a schematic cross-section through a first embodiment of an atomizer nozzle system with nozzle cap and carrier, as well as a variant of the nozzle connection in a cutaway view; Fig. 3a a perspective schematic representation of a second embodiment of an atomizer nozzle system with nozzle cap and carrier; Fig. 3a an enlarged section through an atomizer nozzle of an atomizer nozzle system.

[0051] In detail, it shows Figure 1 an electrohydrodynamic atomizer 1 which comprises an atomizer part 2 and a fluid tank 3.

[0052] A nozzle system 4 is arranged in the upper front area of ​​the atomizer part 2. The nozzle system comprises a first nozzle 10, a second nozzle 11, and a third nozzle 12.

[0053] The nozzles 10, 11, 12 are in this case designed as nozzle bodies 14, 15, 16 projecting from a plane 13 of the nozzle system 4, wherein the nozzle bodies are asymmetrically shaped with curved lateral flanks in their transverse direction 17 to the extension of the nozzle system 4.

[0054] Each of the nozzles 10, 11, 12 has a nozzle opening 21, 22, 23 at its tip. Nozzle openings 21 and 22 are spaced as far apart as possible by a distance 24. Nozzles 22 and 23 are spaced as far apart as possible by a distance 25. The arrangement of the nozzles 21, 22, 23 follows a zigzag pattern in their spacing, such that the best possible spacing is achieved on level 13 of the nozzle system 4.

[0055] The atomizer part 2 has a receptacle 30 for a cover (not shown) in the vicinity of the nozzle system 4, which covers and protects the nozzle system 4 in the transport state.

[0056] Furthermore, the atomizer part 2 comprises at least one operating button 31, which can be used to activate the electrohydrodynamic atomizer 1 and to contact the user to provide the necessary current flow during atomization. Preferably, two further contacts, in particular operating buttons, are provided, not shown here as they are located on the rear side, so that the electrohydrodynamic atomizer 1 can be easily operated with either the left or the right hand.

[0057] Furthermore, an electrically conductive, preferably metallic or metallized, circumferential contact area, in this case a contact ring 32, is provided on the atomizer part 2 in the area between the atomizer part 2 and the fluid tank 3, to serve as a contact point for the user to provide the necessary current flow during atomization. Other arrangements on the device are also conceivable, provided they ensure good and reliable contact.

[0058] Figure 2 shows a schematic cross-section through a first embodiment of an atomizer nozzle system with nozzle cap and carrier, as well as a variant of the nozzle connection in a cutaway view.

[0059] A nozzle cap 40 is shown here separated from a carrier 41. The nozzle cap 40 comprises a nozzle structure 42, which is made of silicone. The nozzle structure 42 forms the nozzle bodies 43, which protrude from the plane 44 of the nozzle cap.

[0060] Below the nozzle structure 42, the nozzle cap 40 comprises a base plate 45, which is made of a material more rigid than the silicone of the nozzle structure 42, in particular a more rigid plastic. In this way, the nozzle cap 40 is provided as a rigid assembly that can be easily attached to and detached from the carrier 41.

[0061] For the detachable fastening of the nozzle cap 40 to the carrier 41, locking elements 50 are provided which clamp a nozzle cap 40 placed on the carrier 41.

[0062] The atomizing nozzle 60 of the nozzle cap 40 comprises a nozzle opening 61 and a nozzle channel 62 which opens into a nozzle bushing 63. The counterpart to the nozzle bushing 63 is formed by the nozzle connection 64 on the carrier 41. In the embodiment shown here, the nozzle connection 64 and the nozzle bushing 63 are conically shaped so that when the nozzle cap 40 is placed on the carrier 41, the two conical flanks abut each other and thus form a seal.

[0063] The nozzle connection 64 includes a fluid channel 65, at the lower end of which an electrical contact 66 is arranged for introducing high voltage into a fluid. The electrical contact is provided with a bore in the area of ​​the fluid channel 65, so that the fluid flows through the electrical contact 66 while being transported to the nozzle opening 61.

[0064] In the cut-out illustration I, an alternative variant of a nozzle connection is shown, which uses a cylindrical shape with an integrated sealing element instead of a conical one. This variant is described below in Figure 3B described in more detail, but can be used at the designated points of carrier 41 as described below.

[0065] Fig. 3a Figure 1 shows a perspective schematic representation of a second embodiment of an atomizing nozzle system with nozzle cap 100 and carrier 101.

[0066] Three atomizing nozzles 102, 103, and 104 are arranged on the nozzle assembly 100. The atomizing nozzles have curved flanks on their nozzle bodies. Nozzle 103 serves as an example. The flank 105, shown here from the front, has a continuously curved profile, exhibiting a considerably greater curvature compared to the flank 106 shown from the rear. The ramp-like structure of the flanks of the nozzle bodies 110, 111, and 112a allows for a surface with raised nozzle bodies that is easy to clean, with the spaced nozzles 102, 103, and 104 being spaced as far apart as possible.

[0067] The carrier 101 arranged below the nozzle cap 100 comprises a connection flange 112b, 113, 114 for each atomizing nozzle 102, 103, 104. The connection flange is cylindrical in this case and includes a sealing ring on its upper edge, which is designed as a directly molded sealing bead.

[0068] Figure 3b shows a correspondingly enlarged representation of a nozzle cap 200 mounted on a carrier 201.

[0069] The nozzle cap 200 again comprises a nozzle structure 202 made of silicone, which is arranged on a base structure 203 made of more rigid plastic.

[0070] The connecting flange 204 of the support 201 is cylindrical in this case. A fluid channel 205 runs through the center of the connecting flange 204. An electrical contact element 206 is arranged at the lower end of the fluid channel 205, which has a central bore 207 through which the fluid to be charged for electrohydrodynamic atomization flows and is thereby charged with an applied high voltage.

[0071] A sealing ring 210 is provided at the upper end of the connection flange 204. The nozzle body 211 is equipped with a cylindrical nozzle bushing 212 into which the connection flange 204 extends, forming a seal with its sealing ring 210 against the flexible silicone material of the nozzle body 211. Above the connection flange 204, the nozzle body 211 contains the nozzle channel 213, which opens into an end channel 214 at its upper end. The nozzle opening 215 is formed by the upper end of the end channel 214. The nozzle channel 213 is conical, specifically in the form of a conical cap section.

[0072] A preferred dimension of one embodiment is given by a nozzle opening diameter 220 of 0.2 mm. The nozzle channel 213 is preferably designed with a length 221 of approximately 5.5 mm. The total length 222 of the fluid channel 205 together with the nozzle channel 213 inside the nozzle is preferably up to approximately 14 mm, whereby a free jet of atomized fluid (not shown) with a free jet length of 10 mm to 15 mm is generated in front of the nozzle opening before the atomization effect begins. Reference symbol list:

[0073] I. Nozzle connection variant 1 Atomizer 2 Atomizer part 3 Fluid tank 4 Nozzle system 10 Nozzle 11 Nozzle 12 Nozzle 13 Level 14 Nozzle body 15 Nozzle body 16 Nozzle body 17 Transverse direction 21 Nozzle opening 22 Nozzle opening 23 Nozzle opening 24 Spacing 25 Spacing 30 Mounting 31 Operating button 32 Contact ring 40 Nozzle cap 41 Carrier 42 Nozzle structure 43 Nozzle body 44 Nozzle cap level 45 Base plate (50 Detent elements 60 Atomizing nozzle 61 Nozzle opening 62 Nozzle channel 63 Nozzle bushing 64 Nozzle connection 65 Fluid channel 66 Electrical contact 100 Nozzle cap 101 Carrier 102 Atomizing nozzle 103 Atomizing nozzle 104 Atomizing nozzle 110 Nozzle body flank 111 Nozzle body flank 112a Nozzle body flank 112b Connection flange 113 Connection flange 114 Connection flange 200 Nozzle cap 201 Carrier 202 Nozzle structure 203 Base structure 204 Connection flange 205 Fluid channel 206 Electrical contact element 207 Bore 210 Sealing ring 211 Nozzle body 212 Nozzle bushing 213 Nozzle channel 214 End channel 215 Nozzle opening 220 Nozzle opening diameter

Claims

1. Atomizer nozzle system with an electrohydrodynamic atomizer, wherein a nozzle cap (40) comprises a plurality of nozzles (10, 11, 12) and, for forming a nozzle (10, 11, 12), comprises at least one nozzle opening (21, 22, 23, 61, 215), at least one nozzle channel (62) and at least one nozzle bushing (63), wherein the nozzle cap (40, 100, 200) is disposed on at least one support (41, 101, 201), and wherein the support (41, 101, 201) for each nozzle bushing comprises a nozzle connection (64), wherein the nozzle cap (40, 100, 200) is disposed on the support (41, 64, 101, 201) so as to be releasably fastened thereto, wherein the nozzle cap (40, 100, 200) is formed in one piece.

2. Atomizer nozzle system according to Claim 1, characterized in that the nozzle cap (40, 100, 200) is at least in proportions made of a flexible material, in particular of a flexible electrical insulator, preferably a silicone.

3. Atomizer nozzle system according to Claim 1 or 2, characterized in that the support (41, 101, 201) is made of a rigid material, preferably a plastics material, in particular PC, ABS, PE, PET or PP or the like.

4. Atomizer nozzle system according to Claim 1, 2 or 3, characterized in that the nozzle cap (40, 100, 200) is held, preferably in a form-fitting manner, on the support (41, 101, 201) by elastically bracing latching elements (50) or bracing a flexible material.

5. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle cap (40, 100, 200) comprises a base structure (203), in particular a base plate (45) or a base frame, on which is disposed a nozzle structure, wherein the base structure in contrast to the nozzle structure (42, 202), the latter preferably being made of silicone, is made of a more rigid material, in particular a plastics material, preferably PC, ABS, PE, PET or PP or the like.

6. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle cap (40, 100, 200) comprises at least three nozzle openings (21, 22, 23, 61, 215), each having an associated nozzle channel (62, 213) and each having an associated nozzle bushing (63, 212), wherein the nozzle openings (61) in a nozzle region are mutually spaced apart to the maximum, in particular are disposed so as to be in sequence along a zigzag line.

7. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle opening (21, 22, 23, 61, 215) of the nozzle protrudes from the plane (13) of the nozzle cap, wherein a flank (110, 111, 112a) of the protruding nozzle is preferably formed as a continuous curve, and in particular the flank (110, 111, 112a) of the nozzle is asymmetrical on one flank side relative to an opposite flank side of the nozzle, in particular has a curvature greater by at least a factor of 1.5.

8. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle cap (40, 100, 200) is manufactured by the injection-moulding method.

9. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle cap (40, 100, 200) is manufactured by the multi-component injection-moulding method.

10. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle cap (40, 100, 200) by way of an elastic portion on the nozzle connection (64) encompasses a connection flange (112b, 113, 114, 204) and by way of deformation forms a seal on the latter.

11. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle connection (64) has a cylindrical connection flange (112b, 113, 114, 204), in particular with an encircling sealing ring (210), preferably a sealing bead formed on the connection flange (112b, 113, 114, 204), and the nozzle bushing (63, 212) forms a corresponding cylindrical receptacle in order to provide an interlocking sealing form fit.

12. Atomizer nozzle system according to one of preceding Claims 1 to 10, characterized in that the nozzle connection (64) has a conical connection flange (112b, 113, 114, 204), and the nozzle bushing forms a corresponding conical receptacle in order to provide an interlocking sealing form fit.

13. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle channel (62, 213) is formed as a tapered portion or as a spherical cap and forms in particular an end channel towards the nozzle opening (21, 22, 23, 61, 215), wherein the end channel (214) is preferably formed as a cylindrical or conical tubular portion.

14. Atomizer nozzle system according to one of the preceding claims, characterized in that the nozzle opening (21, 22, 23, 61, 215) of an atomizer nozzle is between 0.1 mm and 0.3 mm, preferably 0.2 mm, and the length of the nozzle channel is between 4 mm and 6 mm, preferably 5.5 mm.

15. Atomizer nozzle system according to one of the preceding claims, characterized in that formed in the nozzle connection (64) is an electrical contact element (206), in particular a high-voltage contact, wherein the contact protrudes into a fluid channel (65, 205), the fluid channel (65, 205) preferably leads through the contact (206), and in particular the spacing between the electrical contact element and the nozzle opening is between 5 mm and 20 mm, preferably between 11 mm and 15 mm, in particular 14 mm.