EP3897999B1 - Atomiser system having a silicone nozzle array - Google Patents

Description

The electrohydrodynamic atomization of fluids is becoming increasingly important in the area of coating processes. For example, from the PCT/EP2018/060117 , which also as DE 10 2018 109 452 A1 is published, a device is known which, using electrohydrodynamic atomization, applies care products such as sunscreen to a person's body.

From the WO 2018/032560 A1 A spray mechanism with an adjustable spray angle is known, which includes a water inlet base, a connection plate, a plurality of flexible spray pipes, slide blocks, adjustment assemblies, a cover plate and the like. The adjusting assemblies drive the slide blocks threadedly connected to the adjusting assemblies into axially reciprocating motion through the rotation of a drive spindle rod.

The DE 198 30 801 A1 relates to a device for ejecting liquid with a plurality of rotor nozzles, which are combined into a unit, each rotor nozzle having a rotor space formed in a nozzle housing, which has an inlet opening in the region of its axial one end and an outlet opening for the liquid at the other end, as well as a in the rotor space, arranged at an angle relative to its longitudinal axis, rotor driven in rotation and supported on the inner wall of the rotor space, which has a nozzle area supported in a cup bearing at its end facing the outlet opening and an inflow opening at the opposite end.

The DE 10 2014 200 741 A1 refers to a shower with a shower jet-forming fluid outlet structure, which has a plurality of jet outlet units, of which at least two are designed as multi-channel jet outlet units, each with at least one first outlet channel and at least one second outlet channel that is fluidly separated from the first. Furthermore, the shower has a fluid guide which is designed to guide a fluid supplied to the shower either to the first outlet channels or to the second outlet channels. According to the invention, a minimum distance between the exit channels of a respective multi-channel jet exit unit is smaller than a minimum distance between the exit channels of each two multi-channel jet exit units and / or in the case of at least one multi-channel jet exit unit, a second exit channel or a group of a plurality of second exit channels is arranged surrounding a first exit channel at least partially around the circumference.

From the US 2004/021017 A1 There is known an electrostatic spray device configured and arranged to electrostatically charge and dispense a liquid composition from a supply to a dispersion point, the device comprising: a storage container configured to contain the supply of liquid composition includes, a nozzle for dispersing the liquid composition, the nozzle being located at the dispersion point, a channel disposed between the reservoir and the nozzle, the channel allowing electrostatic charging of the liquid composition upon movement of the liquid composition within the channel , a power source to supply an electrical charge, a high voltage power supply device, wherein the High-voltage supply device is electrically connected to the power source, a high-voltage electrode, wherein the high-voltage electrode is electrically connected to the high-voltage supply device, a portion of the high-voltage electrode being arranged between the reservoir and the nozzle, the high-voltage electrode the liquid composition within the channel at a charging location electrostatically charges, and a nozzle channel which is arranged between the charging location and the nozzle, the length of the nozzle channel being subject to the following certain ratio.

However, a large number of atomizer nozzles has not proven to be advantageous when using electrohydrodynamic atomization. In addition, there is often a problem with the necessary cleaning of the systems, since simple cleaning with water is not easily possible given the high voltage required for electrohydrodynamic atomization.

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

This object is achieved by the subject matter of the invention according to claim 1. Advantageous further developments and expedient refinements are specified in the pending claims.

The invention relates to an atomizer nozzle system, in particular for an electrohydrodynamic atomizer, wherein a nozzle cap includes several nozzles and at least one nozzle opening to form a nozzle (nozzle-opening), at least one nozzle channel (nozzle-channel) and at least one nozzle socket (nozzle socket), the nozzle cap being arranged on at least one carrier, and the carrier having a nozzle connection (nozzle) for each nozzle socket -connector). Here, the nozzle cap is releasably attached to the carrier. According to the invention, it is provided that an electrical contact element, namely a high-voltage contact, is formed in the nozzle connection, the contact protruding into a fluid channel.

By releasably attaching the nozzle cap to the carrier, the nozzle cap can be removed and cleaned away from the device unit of the electrohydrodynamic atomizer, for example with water or other solvents. This also makes it easier for the user to replace it after wear and tear occurs. In addition, alternative nozzle caps can also be used whose geometries and other properties are adapted to other fluids to be atomized.

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

The use of a flexible material, for example a silicone, allows dried fluid residues to be removed by simply deforming the surface, for example by running a finger over it, since the hardened residues crumble due to the deformation and can therefore be removed.

The use of an insulator has also surprisingly proven to be advantageous for electrohydrodynamic atomization. The atomization effect that the high-voltage charged liquid experiences is improved by being guided in an electrically insulating nozzle channel, which leads to greater process reliability in electrohydrodynamic atomizer applications, for example when applying care products such as sunscreen.

A further preferred embodiment provides that the carrier is made of a rigid material, preferably plastic, for example PC, ABS, PE, PET or PP or the like.

A rigid support allows the flexible nozzle cap to be attached precisely and reliably, for example via rigid elements for alignment and attachment.

Such rigid elements can be formed by projections or structures, for example collars or mushroom heads, but also by tongue or groove elements, into which corresponding counter-structures of the nozzle cap then engage, in particular snap into place elastically.

An advantageous development of an embodiment provides that the nozzle cap is held on the carrier by elastic tensioning of latching elements or tensioning of a flexible material, preferably held in a form-fitting manner.

The use of a flexible, rubber-like nozzle cap, preferably made of silicone, allows it to be elastically clamped onto the carrier and thus released without tools. Even in the case of an inflexible or partially flexible nozzle cap, one can Simple, tool-free connection can be realized, for example using locking elements.

A further 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 atomizer nozzles is arranged, the base structure Compared to the nozzle structure, which is preferably made of silicone, is made of a relatively more rigid material, in particular PC, ABS, PE, PET or PP or the like, and preferably at least one connecting element, in particular a latching element, to form a preferably releasable connection with the Carrier includes.

A flexible, flexible layer of a nozzle geometry, formed on a more rigid base structure, makes it possible to provide a nozzle geometry made of silicone, for example, without having to forego mechanical locking elements for a detachable connection to a carrier. In addition, the feel when dismantling and assembling the nozzle cap is improved in this way, as a certain dimensional stability is achieved. The base structure can be designed as a type of plate that contains openings for the nozzle connections and/or nozzle sockets, or as a frame structure that only supports and stabilizes in the necessary places.

A further preferred development provides that the nozzle cap comprises at least three nozzle openings, each with an assigned nozzle channel and each with an assigned nozzle bushing, with the nozzle openings being maximal in one nozzle area are spaced apart from one another, in particular are arranged following one another along a zigzag line.

It has been found that an arrangement of at least three nozzle openings represents reliable atomization behavior. A higher number of nozzle openings is also conceivable, with the number of nozzle openings preferably being in the single-digit range.

What is relevant, however, is that the nozzle openings are maximally spaced in the area of the nozzle cap available for arrangement, i.e. they maintain the greatest possible distance. A zigzag arrangement on a surface should be aimed for, as this maximizes the distance between the nozzle openings. When measuring the distance between the nozzle openings, the geometries of the nozzles themselves must also be taken into account, since an opening can never be located directly on the edge of an area, but is usually surrounded by a nozzle body that accommodates the nozzle channel.

An advantageous development is also characterized in that the nozzle opening of the nozzle protrudes from the plane of the nozzle cap, with one flank of the protruding nozzle preferably being designed as a continuously curved curve and in particular the flank of the nozzle on one flank side being asymmetrically relative to an opposite flank side of the nozzle is, in particular has a greater curvature by at least a factor of 1.5.

The nozzle opening, which is carried by a nozzle body, protrudes from the nozzle body to define a nozzle geometry, in particular to accommodate a nozzle channel inside the nozzle body level of the nozzle cap. 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 areas shown in the later exemplary embodiment are left out.

The flanks or side walls of the nozzle body run as a continuously curved curve. Due to the arrangement at the greatest possible distance, there is less installation space available on the flank side of the nozzle body, which is close to the edge of the nozzle cap, than on the opposite side. In this respect, the curvature can be flatter on the side far from the edge, which will be clarified in the later exemplary embodiment. This results in softer transitions, which are advantageous when cleaning.

A further expedient embodiment provides that the nozzle cap and/or a base plate and/or the carrier plate are formed in one piece, preferably manufactured using an injection molding process.

Appropriate production allows cost-effective and efficient production of the component(s).

A further expedient embodiment also provides that the nozzle cap and a base plate and/or the carrier plate are formed in one piece, preferably manufactured using a multi-component injection molding process or otherwise connected to one another, for example by adhesive or vulcanization processes.

Appropriate production allows cost-effective and efficient production of the component(s). In addition, the last two manufacturing processes mentioned prevent accidental separation of the components of the nozzle cap, which provides the user with greater error protection.

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

Due to its detachability, the nozzle cap must form a sealing connection to the nozzle connection of the carrier. This is preferably achieved in that an elastic section, for example made of silicone, sealingly surrounds the connecting flange of the nozzle connection, whereby the clamping force of the elastic section must withstand the delivery pressure of the fluid to be atomized during operation of the electrohydrodynamic atomizer.

A preferred embodiment in this regard 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 in order to provide an interlocking, sealing positive fit.

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

A corresponding cylindrical connecting flange can be produced easily and reliably in the manufacturing process and offers the user a simple connection of the fluid system with a reliable sealing effect when installing and dismantling the detachably connected nozzle cap.

Due to the shaped sealing bead, which is firmly connected to the connecting flange, it is possible for the flexible, soft material, in particular silicone, of the nozzle cap with the sealing bead on the connecting flange to form a sufficient clamping force next to the seal that the nozzle cap is clamped on the carrier Sealing bead is held.

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

The conical connecting flange also allows a preferred centering effect during assembly, with the conical flanks of the connecting flange and nozzle bushing that lie against one another forming a sealing contact.

A further preferred embodiment provides that the nozzle channel is designed as a conical section or as a spherical cap and in particular forms an end channel towards the nozzle opening, the end channel preferably being designed as a cylindrical or conical pipe section.

Such a design of the nozzle channel is the subject of the application DE 10 2018 133 406.0 , the disclosure of which is hereby

is referred to. A corresponding design of the nozzle channel offers an advantageous formation of a free jet of the fluid to be atomized before the effect of electrohydrodynamic atomization begins due to the applied high voltage.

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

An expedient embodiment of the atomizer nozzle system provides that the fluid channel is guided 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.

To carry out 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 carrier, since otherwise contacts would have to be provided in the nozzle cap.

It is particularly advantageous to design a contact for the high voltage as an electrical contact element which projects into the fluid channel. The fluid channel includes a channel through the nozzle socket. Particularly preferably, the electrical contact element is designed in such a way that it is arranged in the flow path of the fluid, in particular the fluid flows through an opening in the electrical contact element. In this way, an optimal effect of the high voltage and the associated charging of the fluid is guaranteed, which leads to a reliable spraying process.

Electrohydrodynamic atomization is based on the instability of electrically chargeable fluids, especially fluids that are sufficiently electrically conductive under high voltage, in a strong, inhomogeneous electric field. The fluid is subjected to high voltage. The fluid deforms into a cone, from the tip of which a thin beam, a so-called jet, is emitted, which immediately breaks up into a spray of finely dispersed drops. Under certain conditions, in Taylor cone mode, the drops have a narrow size distribution.

Through the interaction with a forced hydraulic provision of a fluid flow, for example a pump, an atomization effect can also be improved.

The invention will be explained in more detail using the exemplary embodiments shown below. However, it is not limited to the embodiments shown.

Fig. 1.

eine schematische Darstellung eines elektrohydrodynamischen Zerstäubers;

Fig.2

einen schematischen Querschnitt durch eine erste Ausführungsform eines Zerstäuberdüsensystems mit Düsenkappe und Träger sowie eine Variante des Düsenanschlusses in Ausschnitt-Darstellung;

Fig. 3a

eine perspektivische schematische Darstellung einer zweiten Ausführungsform eines Zerstäuberdüsensystems mit Düsenkappe und Träger;

Fig. 3b

einen vergrößerten Schnitt durch eine Zerstäuberdüse eines Zerstäuberdüsensystems.

Show it

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 detail view;

Fig. 3a

a perspective schematic representation of a second embodiment of an atomizer nozzle system with nozzle cap and carrier;

Fig. 3b

an enlarged section through an atomizer nozzle of an atomizer nozzle system.

Shows in detail Figure 1 an electrohydrodynamic atomizer 1 which includes an atomizer part 2 and a fluid tank 3.

A nozzle system 4 is arranged on the atomizer part 2 in the upper front area. The nozzle system includes a first nozzle 10, a second nozzle 11 and a third nozzle 12.

In the present case, the nozzles 10, 11, 12 are designed as nozzle bodies 14, 15, 16 protruding from a plane 13 of the nozzle system 4, the nozzle bodies having curved lateral flanks being shaped asymmetrically in their transverse direction 17 for the expansion of the nozzle system 4.

Each of the nozzles 10, 11, 12 has a nozzle opening 21, 22, 23 at its tip. The nozzle openings 21 and 22 are separated from each other by the largest possible distance 24. The nozzles 22 and 23 are separated from each other by the largest possible distance 25. The arrangement of the nozzles 21, 22, 23 follows a zigzag pattern in terms of their spacing, so that the best possible spacing takes place on the level 13 of the nozzle system 4.

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

Furthermore, the atomizer part 2 includes at least one control 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. Not shown here, since it is arranged on the rear side, two additional contacts, in particular control buttons, are preferably provided, so that the electrohydrodynamic atomizer 1 can be easily operated with the left as well as with the right hand.

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 fluid tank 3 in order to serve the user as a contact to provide the necessary current flow during atomization. Other arrangements on the device are also conceivable, as long as they result in good and reliable contacting.

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 detail view.

A nozzle cap 40 is shown detached from a carrier 41 here. The nozzle cap 40 includes a nozzle structure 42, which in the present case is made of silicone. The nozzle structure 42 forms the nozzle bodies 43, which protrude from the plane 44 of the nozzle cap.

Below the nozzle structure 42, the nozzle cap 40 in the present case comprises a base plate 45, which is made of a material that is 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, which can be easily attached to the carrier 41 and detached again.

For releasably fastening the nozzle cap 40 on the carrier 41, latching elements 50 are designed, which clamp a nozzle cap 40 placed on the carrier 41.

The atomizer nozzle 60 of the nozzle cap 40 includes 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 rest against one another and thus form a seal.

A fluid channel 65 is provided in the nozzle connection 64, at the lower end of which an electrical contact 66 for introducing the high voltage into a fluid is arranged. In the present case, 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 it is transported to the nozzle opening 61.

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

Fig. 3a shows a perspective schematic representation of a second embodiment of an atomizer nozzle system with nozzle cap 100 and carrier 101.

Three atomizer nozzles 102, 103, 104 are arranged on the nozzle chapel 100. The atomizer nozzles have curved flanks on their nozzle body. Reference is made to nozzle 103 as an example. The flank 105 shown here on the front has a continuously curved course, with a significantly greater curvature compared to the flank 106 shown on the back. The ramp-like structure of the flanks of the nozzle bodies 110, 111, 112a makes it possible to provide an easy-to-clean surface with raised nozzle bodies, in which the spaced nozzles 102, 103, 104 have the greatest possible distance.

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

Figure 3b shows a correspondingly enlarged view of a nozzle cap 200 placed on a carrier 201.

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.

The connecting flange 204 of the carrier 201 is cylindrical in this case. A fluid channel 205 runs in the center of the connecting flange 204. At the lower end of the fluid channel 205, an electrical contact element 206 is arranged, 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.

A sealing ring 210 is provided at the upper end of the connecting flange 204. In the present case, the nozzle body 211 is equipped with a cylindrical nozzle bushing 212, into which the connecting flange 204 is immersed, and with its sealing ring 210 forms a seal with respect to the flexible material of the silicone of the nozzle body 211. Above the connecting flange 204 there is the nozzle channel 213 in the nozzle body 211, which opens into an end channel 214 at its upper end. The nozzle opening 215 is in turn formed by the upper end of the end channel 214. In the present case, the nozzle channel 213 is conical, in particular in the form of a cone cap section.

A preferred dimension of an embodiment is given with a diameter 220 of the nozzle opening 215 of 0.2 mm. The nozzle channel 213 is preferably designed with a length 221 of approximately 5.5 mm. The entire length 222 of the fluid channel 205 together with the nozzle channel 213 inside the nozzle is preferably up to approx. 14 mm, thereby producing a free jet atomized fluid (not shown) is generated in front of the nozzle opening with a free jet length of 10 mm to 15 mm before the atomization effect begins.

List of reference symbols:

I

Nozzle connection variant

1

Atomizer

2

Atomizer part

3

Fluid tank

3a

Version of the atomizer nozzle system

3B

Version variant

3b

enlarged view

4

Nozzle system

10

jet

11

jet

12

jet

13

level

14

Nozzle body

15

Nozzle body

16

Nozzle body

17

Transverse direction

21

nozzle opening

22

nozzle opening

23

nozzle opening

24

Distance

25

Distance

30

Recording

31

Control button

32

Contact ring

40

Nozzle cap

41

carrier

42

Nozzle structure

43

Nozzle body

44

Level of the nozzle cap

45

Base plate

(50

Locking elements

60

Atomizer nozzle

61

nozzle opening

62

nozzle channel

63

Nozzle socket

64

Nozzle connection

65

Fluid channel

66

electric contact

100

Nozzle cap

101

carrier

102

Atomizer nozzle

103

Atomizer nozzle

104

Atomizer 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

Basic structure

204

Connection flange

205

Fluid channel

206

electrical contact element

207

drilling

210

sealing ring

211

Nozzle body

212

Nozzle socket

213

nozzle channel

214

End channel

215

nozzle opening

220

Diameter of the nozzle opening

Claims (15)

1. Atomizer nozzle system, in particular for an electrohydrodynamic atomizer, wherein a nozzle cap (40) comprises a plurality of nozzles (10, 11, 12) and, in order to form 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 socket (63), wherein the nozzle cap (40, 100, 200) is arranged on at least one carrier (41, 101, 201) and wherein the carrier (41, 101, 201) comprises a nozzle connector (64) for each nozzle socket, wherein the nozzle cap (40, 100, 200) is arranged on the carrier (41, 64, 101, 201) in a releasably fastened manner, characterized in that an electrical contact element (206), namely a high-voltage contact, is formed in the nozzle connector (64), wherein the contact projects into a fluid channel (65, 205) .
2. Atomizer nozzle system according to Claim 1, characterized in that the nozzle cap (40, 100, 200) is manufactured at least partially from a flexible material, in particular from a flexible electrical insulator, preferably a silicone.
3. Atomizer nozzle system according to Claim 1 or 2, characterized in that the carrier (41, 101, 201) is manufactured from a rigid material, preferably a plastic, in particular PC, ABS, PE, PET or PP or the like.
4. Atomizer system according to Claim 1, 2 or 3, characterized in that the nozzle cap (40, 100 200) is secured on the carrier (41, 101, 201) by elastically tensioning latching elements (50) or tensioning a flexible material, and is preferably held in a positively locking fashion.
5. Atomizer 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 a nozzle structure is arranged, wherein the base structure is manufactured from a more rigid material in comparison with the nozzle structure (42, 202) which is preferably manufactured from silicone, said base structure being manufactured in particular from a plastic, preferably PC, ABS, PE, PET or PP or the like, and preferably comprising at least one connecting element, in particular a latching element (50), for forming a preferably releasable connection with the carrier (41, 101, 201).
6. Atomizer 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 with an assigned nozzle channel (62, 213) and each with an assigned nozzle socket (63, 212), wherein the nozzle openings (61) are spaced apart from one another to a maximum degree in a nozzle area, in particular are arranged following one another along a zig zag line.
7. Atomizer system according to one of the preceding claims, characterized in that the nozzle opening (21, 22, 23, 61, 215) of the nozzle projects out of the plane (13) of the nozzle cap, wherein an edge (110, 111, 112a) of the nozzle which projects out is embodied preferably as a continuously curved curve, and in particular the edge (110, 111, 112a) of the nozzle is asymmetrical on an edge side with respect to an opposite edge side of the nozzle, in particular has greater curvature by at least a factor of 1.5.
8. Atomizer system according to one of the preceding claims, characterized in that the nozzle cap (40, 100, 200) and/or a base plate (45) and/or the carrier plate are embodied in one piece, preferably manufactured using an injection molding method.
9. Atomizer system according to one of the preceding claims, characterized in that the nozzle cap (40, 100, 200) and a base plate (45) and/or the carrier plate are/is embodied in one piece, preferably manufactured using a multi-component injection molding method or are connected to one another in some other way.
10. Atomizer system according to one of the preceding claims, characterized in that the nozzle cap (40, 100, 200) engages, with an elastic section on the nozzle connector (64), around a connecting flange (112b, 113, 114, 204) and forms a seal on the latter by means of elastic deformation.
11. Atomizer system according to one of the preceding claims, characterized in that the nozzle connector (64) has a cylindrical connecting flange (112b, 113, 114, 204), in particular with a peripheral sealing ring (210), preferably a sealing bead which is integrally formed onto the connecting flange (112b, 113, 114, 204), and the nozzle socket (63, 212) forms a corresponding cylindrical receptacle, in order to provide an interlocking, seal-forming form fit.
12. Atomizer system according to one of the preceding Claims 1 to 10, characterized in that the nozzle connector (64) has a conical connecting flange (112b, 113, 114, 204), and the nozzle socket forms a corresponding conical receptacle, in order to provide an interlocking, seal-forming form fit.
13. Atomizer system according to one of the preceding claims, characterized in that the nozzle channel (62, 213) is embodied shaped as a conical section or as a conical cap and forms, in particular an end channel toward the nozzle opening (21, 22, 23, 61, 215), wherein the end channel (214) is preferably embodied as a cylindrical or conical tubular section.
14. Atomizer 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 to 0.3 mm, is preferably 0.2 mm, and the length of the nozzle channel is between 4 mm to 6 mm, and is preferably 5.5 mm.
15. Atomizer system according to one of the preceding claims, characterized in that the fluid channel (65, 205) is guided through the contact (206), and in particular the distance between the electrical contact element and the nozzle opening is between 5 mm and 20 mm, and is preferably between 11 mm and 15 mm, and is in particular 14 mm.

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