EP3897999B1 - Atomiser system having a silicone nozzle array - Google Patents
Atomiser system having a silicone nozzle array Download PDFInfo
- Publication number
- EP3897999B1 EP3897999B1 EP19831700.0A EP19831700A EP3897999B1 EP 3897999 B1 EP3897999 B1 EP 3897999B1 EP 19831700 A EP19831700 A EP 19831700A EP 3897999 B1 EP3897999 B1 EP 3897999B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- atomizer
- cap
- channel
- carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229920001296 polysiloxane Polymers 0.000 title claims description 14
- 239000012530 fluid Substances 0.000 claims description 38
- 238000007789 sealing Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 11
- 239000011324 bead Substances 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 5
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 239000000615 nonconductor Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000000889 atomisation Methods 0.000 description 15
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
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- 238000000429 assembly Methods 0.000 description 3
- 238000007600 charging Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000475 sunscreen effect Effects 0.000 description 2
- 239000000516 sunscreening agent Substances 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/16—Arrangements for supplying liquids or other fluent material
- B05B5/1691—Apparatus to be carried on or by a person or with a container fixed to the discharge device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/10—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in the form of a fine jet, e.g. for use in wind-screen washers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/035—Discharge apparatus, e.g. electrostatic spray guns characterised by gasless spraying, e.g. electrostatically assisted airless spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/043—Discharge apparatus, e.g. electrostatic spray guns using induction-charging
Definitions
- a spray mechanism with an adjustable spray angle 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.
- 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.
- 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 object of the invention is therefore to improve the function of an electrohydrodynamic atomizer and in particular to simplify cleaning.
- 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).
- the nozzle cap is releasably attached to the carrier.
- an electrical contact element namely a high-voltage contact, is formed in the nozzle connection, the contact protruding into a fluid channel.
- the nozzle cap 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.
- alternative nozzle caps can also be used whose geometries and other properties are adapted to other fluids to be atomized.
- the nozzle cap is at least partially made of a flexible material, in particular a flexible electrical insulator, preferably a silicone.
- a flexible material for example a silicone
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- the nozzle cap with an elastic section on the nozzle connection surrounds a connecting flange and forms a seal on this via elastic deformation.
- the nozzle cap Due to its detachability, the nozzle cap must form a sealing connection to the nozzle connection of the carrier.
- 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.
- 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.
- 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.
- 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.
- 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.
- a contact for the high voltage is an electrical contact element which projects into the fluid channel.
- the fluid channel includes a channel through the nozzle socket.
- 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.
- the drops Under certain conditions, in Taylor cone mode, the drops have a narrow size distribution.
- FIG. 1 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.
- 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.
- 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.
- control button 31 can be used to activate the electrohydrodynamic atomizer 1 and to contact the user to provide the necessary current flow during atomization.
- 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.
- an electrically conductive, preferably metallic or metallized, circumferential contact area 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- the nozzle opening 215 is in turn formed by the upper end of the end channel 214.
- 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.
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Nozzles (AREA)
Description
Die elektrohydrodynamische Zerstäubung von Fluiden gewinnt im Bereich der Beschichtungsverfahren zunehmend an Bedeutung. Beispielsweise ist aus der
Aus der
Die
Die
Aus der
Eine hohe Anzahl an Zerstäuberdüsen hat sich allerdings bei der Anwendung der elektrohydrodynamischen Zerstäubung als nicht vorteilhaft herausgestellt. Darüber hinaus ist oftmals ein Problem in der notwendigen Reinigung der Systeme gegeben, da bei der für die elektrohydrodynamische Zerstäubung notwendigen Hochspannung eine einfache Reinigung mit Wasser nicht ohne weiteres möglich ist.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.
Aufgabe der Erfindung ist es daher, die Funktion eines elektrohydrodynamischen Zerstäubers zu verbessern und insbesondere die Reinigung zu vereinfachen.The object of the invention is therefore to improve the function of an electrohydrodynamic atomizer and in particular to simplify cleaning.
Diese Aufgabe wird vom Gegenstand der Erfindung nach Patentanspruch 1 gelöst. Vorteilhafte Weiterbildungen und zweckmäßige Ausgestaltungen sind in den anhängigen Ansprüchen angegeben.This object is achieved by the subject matter of the invention according to
Die Erfindung betrifft ein Zerstäuberdüsensystem , insbesondere für einen elektrohydrodynamischen Zerstäuber, wobei in einer Düsenkappe (nozzle cap) mehrere Düsen umfasst sind und zur Ausbildung einer Düse (nozzle) mindestens eine Düsenöffnung (nozzle-opening), mindestens ein Düsenkanal (nozzle-channel) sowie mindestens eine Düsenbuchse (nozzle-socket) umfasst sind, wobei die Düsenkappe auf mindestens einem Träger (carrier) angeordnet ist, und wobei der Träger für jede Düsenbuchse einen Düsenanschluss (nozzle-connector) umfasst. Hierbei ist die Düsenkappe auf dem Träger lösbar befestigt angeordnet. Erfindungsgemäß ist es vorgesehen, dass in dem Düsenanschluss ein elektrisches Kontaktelement, nämlich ein Hochspannungskontakt ausgebildet ist, wobei der Kontakt in einen Fluidkanal hineinragt.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.
Durch die lösbare Befestigung der Düsenkappe auf dem Träger kann die Düsenkappe abgenommen werden, und entfernt von der Geräteeinheit des elektrohydrodynamischen Zerstäubers z.B. mit Wasser oder anderen Lösungsmitteln gereinigt werden. Auch ein Austausch nach auftretendem Verschleiß ist dadurch vereinfacht durch den Benutzer selbst denkbar. Darüber hinaus können auch alternative Düsenkappen eingesetzt werden, deren Geometrien und sonstige Eigenschaften an weitere zu zerstäubende Fluide angepasst sind.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.
Eine bevorzugte Ausführungsform sieht vor, dass die Düsenkappe zumindest anteilig aus einem flexiblen Material, insbesondere aus einem flexiblen elektrischen Isolator, bevorzugt einem Silikon hergestellt ist.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.
Die Nutzung eines flexiblen Materials, z.B. eines Silikons erlaubt es, eingetrocknete Fluidrückstände durch einfaches Deformieren der Oberfläche, z.B. durch Darüberstreichen mit einem Finger, zu entfernen, da die gehärteten Rückstände aufgrund der Deformation zerbröseln und damit entfernbar sind.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.
Die Nutzung eines Isolators hat sich darüber hinaus überraschender Weise als Vorteilhaft für die elektrohydrodynamische Zerstäubung herausgestellt. Der Zerstäubungseffekt, welchen die mit Hochspannung aufgeladene Flüssigkeit erfährt, wird durch die Führung in einem elektrisch isolierenden Düsenkanal verbessert was zu einer höheren Prozesssicherheit bei der elektrohydrodynamischen Zerstäuberanwendung, beispielsweise beim Auftragen von Pflegeprodukten wie Sonnencreme, führt.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.
Eine weitere bevorzugte Ausführungsform sieht vor, dass der Träger aus einem starren Material, bevorzugt aus Kunststoff, z.B. PC, ABS, PE, PET oder PP oder dergleichen hergestellt ist.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.
Ein starrer Träger erlaubt eine präzise und betriebssichere Befestigung der flexiblen Düsenkappe, beispielsweise über starre Elemente zur Ausrichtung und Befestigung.A rigid support allows the flexible nozzle cap to be attached precisely and reliably, for example via rigid elements for alignment and attachment.
Derartige starre Elemente können durch Vorsprünge oder Strukturen, z.B. Kragen oder Pilzköpfe, aber auch durch Nut-oder Feder-Elemente ausgebildet werden, in welche dann entsprechende Gegenstrukturen der Düsenkappe eingreifen, insbesondere elastisch einrasten.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.
Eine vorteilhafte Weiterbildung einer Ausführungsform sieht vor, dass die Düsenkappe auf dem Träger durch elastische Verspannung von Rastelementen oder Verspannung eines flexiblen Materials gehalten ist, bevorzugt formschlüssig gehalten ist.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.
Die Nutzung einer flexiblen, gummiartigen, bevorzugt aus Silikon bestehenden Düsenkappe erlaubt es, diese auf den Träger elastisch aufzuspannen, und somit werkzeugfrei zu lösen. Auch im Falle einer unflexiblen oder teilflexiblen Düsenkappe kann eine einfache werkzeugfrei lösbare Verbindung z.B. durch Rastelemente realisiert werden.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.
Eine weitere bevorzugte Ausführungsform sieht vor, dass die Düsenkappe eine Basisstruktur (base-structure), insbesondere eine Basisplatte (base-plate) oder einen Basisrahmen(base-frame) umfasst, auf welcher eine Düsenstruktur zur Ausbildung der Zerstäuberdüsen angeordnet ist, wobei die Basisstruktur gegenüber der Düsenstruktur, welche bevorzugt aus Silikon hergestellt ist, aus einem demgegenüber starreren Material, insbesondere PC, ABS, PE, PET oder PP oder dergleichen, hergestellt ist und bevorzugt mindestens ein Verbindungselement, insbesondere ein Rastelement, zur Ausbildung einer bevorzugt lösbaren Verbindung mit dem Träger umfasst.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.
Eine flexible, biegsame Lage einer Düsengeometrie, ausgebildet auf einer starreren Basisstruktur erlaubt es, eine Düsengeometrie z.B. aus Silikon bereit zu stellen, ohne auf mechanische Rastelemente zur lösbaren Verbindung mit einem Träger verzichten zu müssen. Darüber hinaus wird auf diese Weise die Haptik bei der Demontage und Montage der Düsenkappe verbessert, da eine gewisse Formstabilität erreicht wird. Die Basisstruktur kann dabei als eine Art Platte ausgebildet sein, welche Durchbrechungen für die Düsenanschlüsse und/oder Düsenbuchsen enthält, oder als eine Rahmenkonstruktion, welche nur an den notwendigen Stellen stützt und stabilisiert.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.
Eine überdies bevorzugte Weiterbildung sieht vor, dass die Düsenkappe mindestens drei Düsenöffnungen mit je einem zugeordneten Düsenkanal und je einer zugeordneten Düsenbuchse umfasst, wobei die Düsenöffnungen in einem Düsenbereich maximal voneinander beabstandet sind, insbesondere einander folgend entlang einer Zick-Zack-Linie angeordnet sind.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.
Es hat sich herausgestellt, dass eine Anordnung von mindestens drei Düsenöffnungen ein prozesssicheres Zerstäubungsverhalten darstellt. Auch eine höhere Anzahl an Düsenöffnungen ist denkbar, wobei sich die Anzahl der Düsenöffnungen bevorzugt im einstelligen Bereich bewegt.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.
Relevant ist jedoch, dass die Düsenöffnungen auf dem zur Anordnung zur Verfügung stehenden Bereich der Düsenkappe maximal beabstandet sind, also den größtmöglichen Abstand einhalten. Dabei ist eine Zick-Zack-Anordnung auf einer Fläche anzustreben, da diese zwischen den Düsenöffnungen den Abstand maximiert. Bei der Bemessung des Abstandes der Düsenöffnungen müssen auch die Geometrien der Düsen selbst beachtet werden, da eine Öffnung nie unmittelbar am Rand eines Bereichs liegen kann, sondern in der Regel von einem Düsenkörper, welcher den Düsenkanal aufnimmt, umgeben wird.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.
Eine vorteilhafte Weiterbildung ist überdies dadurch gekennzeichnet, dass die Düsenöffnung der Düse aus der Ebene der Düsenkappe herausragt, wobei eine Flanke der herausragenden Düse bevorzugt als stetig gekrümmte Kurve ausgebildet ist und insbesondere die Flanke der Düse an einer Flankenseite bezogen auf eine gegenüberliegende Flankenseite der Düse asymmetrisch ist, insbesondere eine um mindestens einen Faktor 1,5 größere Krümmung aufweist.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.
Die Düsenöffnung, welche durch einen Düsenkörper getragen wird, ragt zur Definition einer Düsengeometrie, insbesondere zur Aufnahme eines Düsenkanals im Inneren des Düsenkörpers aus der Ebene der Düsenkappe, heraus. Die Ebene der Düsenkappe ist dabei als der im Wesentlichen ebene Untergrund zu verstehen, auf welchem die Düsengeometrie angeordnet ist. Die im späteren Ausführungsbeispiel dargestellten hochgezogenen Randbereiche bleiben dabei außen vor.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.
Die Flanken bzw. Seitenwände des Düsenkörpers verlaufen dabei als stetig gekrümmte Kurve. Aufgrund der Anordnung im größtmöglichen Abstand steht auf der Flankenseite des Düsenkörpers, welcher dem Rand der Düsenkappe nahe liegt, ein geringerer Bauraum zur Verfügung, als auf der gegenüberliegenden Seite. Insofern kann die Krümmung auf der randfernen Seite flacher auslaufen, was im späteren Ausführungsbeispiel verdeutlicht wird. Dadurch werden weichere Übergänge erzielt, welche bei einer Reinigung vorteilhaft sind.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.
Eine weitere zweckmäßige Ausführungsform sieht vor, dass die Düsenkappe und/oder eine Basisplatte und/oder die Trägerplatte einstückig ausgebildet, vorzugsweise im Spritzgussverfahren hergestellt sind.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.
Eine entsprechende Herstellung erlaubt eine kostengünstige und effiziente Fertigung der bzw. der Bestandteile.Appropriate production allows cost-effective and efficient production of the component(s).
Eine weitere zweckmäßige Ausführungsform sieht überdies vor, dass die Düsenkappe und eine Basisplatte und/oder die Trägerplatte einteilig ausgebildet, vorzugsweise im Mehrkomponenten-Spritzgussverfahren hergestellt oder anderweitig, z.B. durch Klebe oder Vulkanisierprozesse miteinander verbunden sind.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.
Eine entsprechende Herstellung erlaubt eine kostengünstige und effiziente Fertigung des bzw. der Bestandteile. Darüber hinaus wird durch die beiden zuletzt genannten Herstellungsverfahren eine versehentliche Auftrennung der Bestandteile der Düsenkappe vermieden, was dem Benutzer eine höhere Fehlersicherheit liefert.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.
Es ist weiterhin vorgesehen, dass in einer Ausführungsform die Düsenkappe mit einem elastischen Abschnitt an dem Düsenanschluss einen Anschlussflansch umgreift und an diesem über elastische Deformation eine Dichtung ausbildet.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.
Die Düsenkappe muss aufgrund ihrer Lösbarkeit einen dichtenden Anschluss an den Düsenanschluss des Trägers ausbilden. Dies wird bevorzugt dadurch erreicht, dass ein elastischer Abschnitt, beispielsweise aus einem Silikon den Anschlussflansch des Düsenanschluss dichtend umgreift, wobei die Spannkraft des elastischen Abschnitts dem auftretenden Förderdruck des zu zerstäubenden Fluids beim Betrieb des elektrohydrodynamischen Zerstäubers stand halten muss.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.
Eine diesbezüglich bevorzugte Ausführungsform sieht vor, dass der Düsenanschluss einen zylindrischen Anschlussflansch, insbesondere mit einem umlaufenden Dichtring, aufweist, und die Düsenbuchse eine entsprechende zylindrische Aufnahme ausbildet, um einen ineinandergreifend dichtenden Formschluss bereit zu stellen.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.
Der Dichtring kann auch als am Anschlussflansch direkt ausgeformter Wulst, insbesondere im Spritzguss direkt hergestellte Wulststruktur, ausgebildet sein, um zusätzliche Bestandteile oder Arbeitsschritte zu vermeiden.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.
Ein entsprechender zylindrischer Anschlussflansch lässt sich im Herstellungsverfahren einfach und prozesssicher fertigen und bietet dem Benutzer bei der Montage und Demontage der lösbar verbundenen Düsenkappe einen einfachen Anschluss des Fluidsystems mit zuverlässiger Dichtwirkung an.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.
Es ist durch den ausgeformten Dichtwulst, welcher fest mit dem Anschlussflansch verbunden ist, realisierbar, dass das flexible weiche Material, insbesondere Silikon der Düsenkappe mit dem Dichtwulst an dem Anschlussflansch neben der Abdichtung eine hinreichende Klemmkraft ausbildet, dass die Düsenkappe auf dem Träger durch Verklemmung am Dichtwulst gehalten wird.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.
Eine alternative bevorzugte Ausführungsform sieht vor, dass der Düsenanschluss einen konischen Anschlussflansch aufweist, und die Düsenbuchse eine entsprechende konische Aufnahme ausbildet, um einen ineinandergreifend dichtenden Formschluss bereit zu stellen.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.
Der konische Anschlussflansch erlaubt überdies eine bevorzugte Zentrierwirkung beim Zusammenbau, wobei die gegeneinander anliegenden konischen Flanken von Anschlussflansch und Düsenbuchse einen dichtenden Kontakt ausbilden.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.
Eine weitere bevorzugte Ausführungsform sieht vor, dass der Düsenkanal als Kegelabschnitt oder als Kugelkappe geformt ausgebildet ist und insbesondere einen Endkanal zur Düsenoffnung hin ausbildet, wobei der Endkanal bevorzugt als zylindrischer oder konischer Rohrabschnitt ausgebildet ist.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.
Eine derartige Ausbildung des Düsenkanals ist Gegenstand der Anmeldung
Bezug genommen wird. Eine entsprechende Gestaltung des Düsenkanals bietet eine vorteilhafte Ausbildung eines Freistrahls des zu zerstäubenden Fluides, bevor die Wirkung der elektrohydrodynamischen Zerstäubung aufgrund der aufgebrachten Hochspannung einsetzt.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.
Besonders bevorzugt wird dabei vorgesehen, dass die Düsenöffnung einer Zerstäuberdüse zwischen 0,1 mm bis 0,3 mm, bevorzugt 0,2 mm beträgt und die Länge des Düsenkanals zwischen 4 mm bis 6 mm, bevorzugt 5,5 mm beträgt.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.
Eine zweckmäßige Ausführungsform des Zerstäuberdüsensystems sieht vor, dass der Fluidkanal durch den Kontakt hindurch geführt ist, und insbesondere der Abstand zwischen dem elektrischen Kontaktelement und der Düsenöffnung zwischen 5 mm und 20 mm, bevorzugt zwischen 11 mm und 15 mm, insbesondere 14 mm beträgt.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.
Zur Ausführung einer elektrohydrodynamischen Zerstäubung ist es notwendig, das zu zerstäubende Fluid mit einer Hochspannung zu beaufschlagen. Diese Hochspannung wird besonders vorteilhaft im Bereich des Trägers aufgebracht, da ansonsten wiederum Kontaktierungen in der Düsenkappe vorzusehen wären.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.
Insbesondere von Vorteil ist es, einen Kontakt für die Hochspannung als elektrisches Kontaktelement auszubilden, welches in den Fluidkanal hinein ragt. Der Fluidkanal umfasst dabei einen Kanal durch die Düsenbuchse. Besonders bevorzugt wird das elektrische Kontaktelement derart ausgebildet, dass es im Strömungsverlauf des Fluides angeordnet ist, insbesondere von dem Fluid durch eine Öffnung im elektrischen Kontaktelement durchströmt wird. Auf diese Weise ist eine optimale Einwirkung der Hochspannung und damit einhergehende Aufladung des Fluides gewährleistet, was zu einer prozesssicheren Sprühvorgang führt.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.
Die elektrohydrodynamischen Zerstäubung beruht auf der Instabilität von elektrisch aufladbaren Fluiden, insbesondere unter Hochspannung hinreichend elektrisch leitenden Fluiden, in einem starken inhomogenen elektrischen Feld. Das Fluid wird dabei mit einer Hochspannung beaufschlagt. Das Fluid verformt sich dabei zu einem Kegel, von dessen Spitze aus ein dünner Strahl, ein sogenannter Jet emittiert wird, der unmittelbar danach in ein Spray aus fein dispergierten Tropfen zerfällt. Unter bestimmten Bedingungen, im Taylor-Kegel Modus, besitzen die Tropfen eine schmale Größenverteilung.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.
Durch die Zusammenwirkung mit einer erzwungenen hydraulischen Bereitstellung eines Fluidstroms, z.B. eine Pumpe kann eine Zerstäubungswirkung überdies verbessert werden.Through the interaction with a forced hydraulic provision of a fluid flow, for example a pump, an atomization effect can also be improved.
Die Erfindung soll anhand der nachführend dargestellten Ausführungsbeispiele näher erläutert werden. Sie ist dabei jedoch nicht auf die dargestellten Ausführungsformen beschränkt.The invention will be explained in more detail using the exemplary embodiments shown below. However, it is not limited to the embodiments shown.
Es zeigen
- 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.
- 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.
Im Einzelnen zeigt
Am Zerstäuberteil 2 ist im oberen vorderseitigen Bereich ein Düsensystem 4 angeordnet. Das Düsensystem umfasst dabei eine erste Düse 10, eine zweite Düse 11 sowie eine dritte Düse 12.A
Die Düsen 10, 11, 12 sind vorliegend als aus einer Ebene 13 des Düsensystems 4 herausragende Düsenkörper 14, 15, 16 ausgebildet, wobei die Düsenkörper mit gekrümmten seitlichen Flanken in ihrer Querrichtung 17 zur Ausdehnung des Düsensystems 4 asymmetrisch geformt sind.In the present case, the
Jede der Düsen 10, 11,12 trägt an ihrer Spitze eine Düsenöffnung 21, 22, 23. die Düsenöffnungen 21 und 22 sind durch einen möglichst großen Abstand 24 voneinander entfernt. Die Düsen 22 und 23 sind durch einen möglichst großen Abstand 25 voneinander entfernt. Die Anordnung der Düsen 21, 22, 23 folgt in ihrer Beabstandung einem Zick-Zack Muster, sodass eine bestmögliche Beabstandung auf der Ebene 13 des Düsensystems 4 erfolgt.Each of the
Das Zerstäuberteil 2 weist in Umgebung des Düsensystems 4 eine Aufnahme 30 für einen Deckel (nicht dargestellt) auf, welcher im Transportzustand das Düsensystem 4 abdeckt und schützt.The
Des Weiteren umfasst das Zerstäuberteil 2 mindestens einen Bedientaster 31, welcher zur Aktivierung des elektrohydrodynamischen Zerstäubers 1 sowie zur Kontaktierung des Benutzers zur Bereitstellung des notwendigen Stromflusses bei der Zerstäubung dienen kann. Vorliegend nicht dargestellt, da auf der rückseitigen Seite angeordnet, sind bevorzugt weitere 2 weitere Kontakte, insbesondere Bedientaster vorgesehen, sodass der elektrohydrodynamischen Zerstäuber 1 mit der linken als auch mit der rechten Hand problemlos bedient werden kann.Furthermore, the
Des Weiteren ist am Zerstäuberteil 2 im Bereich zwischen Zerstäuberteil 2 und Fluidtank 3 ein elektrisch leitender, bevorzugt metallischer oder metallisierter umlaufender Kontaktbereich, vorliegend ein Kontaktring 32 vorgesehen, um dem Benutzer als Kontaktierung zur Bereitstellung des notwendigen Stromflusses bei der Zerstäubung zu dienen. Auch andere Anordnungen am Gerät sind denkbar, soweit sie eine gute und prozesssichere Kontaktierung mit sich bringen.Furthermore, an electrically conductive, preferably metallic or metallized, circumferential contact area, in this case a
Eine Düsenkappe 40 ist vorliegend abgehoben von einem Träger 41 dargestellt. Die Düsenkappe 40 umfasst dabei eine Düsenstruktur 42, welche vorliegend aus Silikon hergestellt ist. Die Düsenstruktur 42 bildet die Düsenkörper 43 aus, welche aus der Ebene 44 der Düsenkappe hervorragen.A
Unterhalb der Düsenstruktur 42 umfasst die Düsenkappe 40 vorliegend eine Basisplatte 45, welche aus einem gegenüber dem Silikon der Düsenstruktur 42 starreren Material, insbesondere einem starreren Kunststoff hergestellt ist. Auf diese Weise wird die Düsenkappe 40 als starre Baugruppe vorgesehen, welche sich gut auf dem Träger 41 befestigen und wieder lösen lässt.Below the
Zur lösbaren Befestigung der Düsenkappe 40 auf dem Träger 41 sind Rastelemente 50 ausgebildet, welche eine auf den Träger 41 aufgelegte Düsenkappe 40 klemmend fixieren.For releasably fastening the
Die Zerstäuberdüse 60 der Düsenkappe 40 umfasst eine Düsenöffnung 61 sowie einen Düsenkanal 62 welcher in eine Düsenbuchse 63 mündet. Das Gegenstück zur Düsenbuchse 63 wird durch den Düsenanschluss 64 auf dem Träger 41 gebildet. In vorliegend dargestellte Ausführungsform ist der Düsenanschluss 64 sowie die Düsenbuchse 63 konisch geformt, sodass beim Aufsetzen der Düsenkappe 40 auf den Träger 41 die beiden konischen Flanken aneinander anliegen und damit eine Abdichtung ausbilden.The
Im Düsenanschluss 64 ist ein Fluidkanal 65 vorgesehen, an dessen unteren Ende ein elektrischer Kontakt 66 zur Einbringung der Hochspannung in ein Fluid, angeordnet ist. Der elektrische Kontakt ist vorliegend mit einer Bohrung im Bereich des Fluidkanals 65 versehen, sodass das Fluid durch den elektrischen Kontakt 66 hin durchströmt, während es zur Düsenöffnung 61 transportiert wird.A
In der ausgeschnittenen Darstellung I. Ist eine alternative Variante eines Düsenanschlusses dargestellt, welcher anstatt einer konischen Form eine zylindrische Form mit angeordnetem Dichtelement nutzt. Diese Variante wird nachfolgend in
Auf der Düsenkapelle 100 sind drei Zerstäuberdüsen 102, 103, 104 angeordnet. Die Zerstäuberdüsen weisen an ihrem Düsenkörper gekrümmte Flanken auf. Exemplarisch wird auf die Düse 103 verwiesen. Die vorliegend vorderseitige dargestellte Flanke 105 weist einen stetig gekrümmten Verlauf auf, wobei im Vergleich zur rückseitig dargestellten Flanke 106 eine erheblich stärkere Krümmung gegeben ist. Die rampenartige Struktur der Flanken der Düsenkörper 110, 111, 112a erlaubt es, eine gut zu reinigende Oberfläche mit erhabenen Düsenkörpern bereitzustellen, bei welcher die beabstandeten der Düsen 102, 103, 104 einen größtmöglichen Abstand aufweisen.Three
Der unterhalb der Düsenkappe 100 angeordnete Träger 101 umfasst für jede Zerstäuberdüse 102, 103, 104 einen Anschlussflansch 112b, 113, 114. der Anschlussflansch ist vorliegend zylindrisch ausgebildet und umfasst an seiner oberen Kante einen Dichtring, welcher vorliegend als unmittelbar angeformter Dichtwulst ausgebildet ist.The
Die Düsenkappe 200 umfasst dabei wieder eine Düsenstruktur 202 aus Silikon, welche auf einer Basisstruktur 203 aus starreren Kunststoff angeordnet ist.The
Der Anschlussflansch 204 des Trägers 201 ist vorliegend zylindrisch ausgebildet. Im Zentrum des Anschlussflanschs 204 verläuft ein Fluidkanal 205. Am unteren Ende des Fluidkanals 205 ist ein elektrisches Kontaktelement 206 angeordnet, welches eine zentrische Bohrung 207 aufweist, durch die das zur elektrohydrodynamischen Zerstäubung aufzuladen Fluid hin durchströmt, und dabei mit einer anliegenden Hochspannung aufgeladen wird.The connecting
Am oberen Ende des Anschlussflanschs 204 ist ein Dichtring 210 vorgesehen. Der Düsenkörper 211 ist vorliegend mit einer zylindrischen Düsenbuchse 212 ausgestattet, in welche der Anschlussflansch 204 eintaucht, und mit seinem Dichtring 210 gegenüber dem flexiblen Material des Silikon des Düsenkörpers 211 eine Dichtung ausbildet. Oberhalb des Anschlussflanschs 204 befindet sich im Düsenkörper 211 der Düsenkanal 213 welcher an seinem oberen Ende in einen Endkanal 214 mündet. Die Düsenöffnung 215 wird wiederum durch das obere Ende des Endkanals 214 gebildet. Der Düsenkanal 213 ist vorliegend kegelförmig, insbesondere in Form eines Kegelkappenabschnitts ausgebildet.A sealing
Eine bevorzugte Dimensionen einer Ausführungsform ist dabei bei einem Durchmesser 220 der Düsenöffnung 215 von 0,2 mm gegeben, Der Düsenkanal 213 wird bevorzugt mit einer Länge 221 von ca. 5,5 mm ausgebildet. Die gesamte Länge 222 des Fluidkanal 205 gemeinsam mit dem Düsenkanal 213 im Inneren der Düse beträgt bevorzugt bis ca. 14 mm, wobei dadurch ein Freistrahl beim zerstäubten Fluid (nicht dargestellt) vor der Düsenöffnung mit einer Freistrahllänge von 10 mm bis 15 mm erzeugt wird, bevor der Zerstäubungseffekt einsetzt.A preferred dimension of an embodiment is given with a
- I.I
- DüsenanschlussvarianteNozzle connection variant
- 11
- ZerstäuberAtomizer
- 22
- ZerstäuberteilAtomizer part
- 33
- FluidtankFluid tank
- 3a3a
- Ausführungsvariante ZerstäuberdüsensystemVersion of the atomizer nozzle system
- 3B3B
- AusführungsvarianteVersion variant
- 3b3b
- vergrößerte Darstellungenlarged view
- 44
- DüsensystemNozzle system
- 1010
- Düsejet
- 1111
- Düsejet
- 1212
- Düsejet
- 1313
- Ebenelevel
- 1414
- DüsenkörperNozzle body
- 1515
- DüsenkörperNozzle body
- 1616
- DüsenkörperNozzle body
- 1717
- QuerrichtungTransverse direction
- 2121
- Düsenöffnungnozzle opening
- 2222
- Düsenöffnungnozzle opening
- 2323
- Düsenöffnungnozzle opening
- 2424
- AbstandDistance
- 2525
- AbstandDistance
- 3030
- AufnahmeRecording
- 3131
- BedientasterControl button
- 3232
- KontaktringContact ring
- 4040
- DüsenkappeNozzle cap
- 4141
- Trägercarrier
- 4242
- DüsenstrukturNozzle structure
- 4343
- DüsenkörperNozzle body
- 4444
- Ebene der DüsenkappeLevel of the nozzle cap
- 4545
- BasisplatteBase plate
- (50(50
- RastelementeLocking elements
- 6060
- ZerstäuberdüseAtomizer nozzle
- 6161
- Düsenöffnungnozzle opening
- 6262
- Düsenkanalnozzle channel
- 6363
- DüsenbuchseNozzle socket
- 6464
- DüsenanschlussNozzle connection
- 6565
- FluidkanalFluid channel
- 6666
- elektrischer Kontaktelectric contact
- 100100
- DüsenkappeNozzle cap
- 101101
- Trägercarrier
- 102102
- ZerstäuberdüseAtomizer nozzle
- 103103
- ZerstäuberdüseAtomizer nozzle
- 104104
- ZerstäuberdüseAtomizer nozzle
- 110110
- DüsenkörperflankeNozzle body flank
- 111111
- DüsenkörperflankeNozzle body flank
- 112a112a
- DüsenkörperflankeNozzle body flank
- 112b112b
- AnschlussflanschConnection flange
- 113113
- AnschlussflanschConnection flange
- 114114
- AnschlussflanschConnection flange
- 200200
- DüsenkappeNozzle cap
- 201201
- Trägercarrier
- 202202
- DüsenstrukturNozzle structure
- 203203
- BasisstrukturBasic structure
- 204204
- AnschlussflanschConnection flange
- 205205
- FluidkanalFluid channel
- 206206
- elektrisches Kontaktelementelectrical contact element
- 207207
- Bohrungdrilling
- 210210
- Dichtringsealing ring
- 211211
- DüsenkörperNozzle body
- 212212
- DüsenbuchseNozzle socket
- 213213
- Düsenkanalnozzle channel
- 214214
- EndkanalEnd channel
- 215215
- Düsenöffnungnozzle opening
- 220220
- Durchmesser der DüsenöffnungDiameter of the nozzle opening
Claims (15)
- 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) .
- 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.
- 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.
- 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.
- 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).
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP23196735.7A EP4268973A3 (en) | 2018-12-21 | 2019-12-19 | Atomizing nozzle system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018133440 | 2018-12-21 | ||
PCT/EP2019/086282 WO2020127713A1 (en) | 2018-12-21 | 2019-12-19 | Atomiser system having a silicone nozzle array |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23196735.7A Division EP4268973A3 (en) | 2018-12-21 | 2019-12-19 | Atomizing nozzle system |
Publications (2)
Publication Number | Publication Date |
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EP3897999A1 EP3897999A1 (en) | 2021-10-27 |
EP3897999B1 true EP3897999B1 (en) | 2023-09-13 |
Family
ID=69104418
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP23196735.7A Pending EP4268973A3 (en) | 2018-12-21 | 2019-12-19 | Atomizing nozzle system |
EP19831700.0A Active EP3897999B1 (en) | 2018-12-21 | 2019-12-19 | Atomiser system having a silicone nozzle array |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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EP23196735.7A Pending EP4268973A3 (en) | 2018-12-21 | 2019-12-19 | Atomizing nozzle system |
Country Status (7)
Country | Link |
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US (1) | US12017235B2 (en) |
EP (2) | EP4268973A3 (en) |
JP (1) | JP7457024B2 (en) |
KR (1) | KR102595109B1 (en) |
CN (1) | CN113453804B (en) |
DE (1) | DE102019135150A1 (en) |
WO (1) | WO2020127713A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2020127712A1 (en) * | 2018-12-21 | 2020-06-25 | J. Wagner Gmbh | Function control for an electrohydrodynamic atomizer |
DE102021109651A1 (en) | 2021-04-16 | 2022-10-20 | J. Wagner Gmbh | Spray device for spraying a cosmetic liquid, method for operating a spray device, nozzle for a spray device and nozzle array for a spray device |
GB202106111D0 (en) * | 2021-04-29 | 2021-06-16 | 7Rdd Ltd | Improvements to spray apparatus |
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DE19830801C2 (en) | 1998-07-09 | 2001-05-10 | Anton Jaeger | Device for ejecting liquid |
JP3462398B2 (en) | 1998-07-22 | 2003-11-05 | 荏原 裕行 | Shower equipment |
JP2000237638A (en) | 1999-02-16 | 2000-09-05 | Toto Ltd | Shower device |
EP1269518B1 (en) | 1999-12-30 | 2011-12-21 | Advion BioSystems, Inc. | Multiple electrospray device, systems and methods |
MXPA04008203A (en) * | 2002-02-25 | 2004-11-26 | Procter & Gamble | Electrostatic spray device. |
JP5392659B2 (en) * | 2010-05-31 | 2014-01-22 | 株式会社吉野工業所 | Cap with nozzle |
KR200471512Y1 (en) * | 2012-03-28 | 2014-02-28 | 영 근 송 | Shower head with a preventing structure of water leakage |
US9138760B2 (en) * | 2012-10-22 | 2015-09-22 | Steven C. Cooper | Electrostatic liquid spray nozzle having an internal dielectric shroud |
JP6315364B2 (en) | 2013-06-10 | 2018-04-25 | パナソニックIpマネジメント株式会社 | shower head |
JP2015058402A (en) | 2013-09-19 | 2015-03-30 | ダイキン工業株式会社 | Film formation device |
DE102014200741A1 (en) | 2014-01-16 | 2015-07-16 | Hansgrohe Se | Shower with multi-channel jet outlet units |
KR101602657B1 (en) * | 2014-04-08 | 2016-03-11 | 아산텍 주식회사 | Sterilization and cleansing shower |
CN106687218B (en) | 2014-09-04 | 2019-11-12 | 胜利创新公司 | Electrostatic fluid transportation system |
CN106076676B (en) * | 2016-08-16 | 2018-02-02 | 宁波大叶园林工业有限公司 | The adjustable spraying mechanism of spray angle |
KR102534696B1 (en) | 2017-04-21 | 2023-05-22 | 요트. 바그너 게엠베하 | Electrostatic Sprayers for Liquids and How They Work |
JP2018183442A (en) | 2017-04-26 | 2018-11-22 | パナソニックIpマネジメント株式会社 | Shower head with microbubble generating function |
US10583448B2 (en) | 2017-06-20 | 2020-03-10 | Progressive Grower Technologies, Inc. | Electrostatic spraying system for agriculture |
CN108554662B (en) | 2018-06-29 | 2024-07-12 | 江苏大学 | Spiral gas-liquid double-fluid electrostatic atomization nozzle |
-
2019
- 2019-12-19 CN CN201980092208.1A patent/CN113453804B/en active Active
- 2019-12-19 US US17/309,734 patent/US12017235B2/en active Active
- 2019-12-19 WO PCT/EP2019/086282 patent/WO2020127713A1/en unknown
- 2019-12-19 DE DE102019135150.2A patent/DE102019135150A1/en active Pending
- 2019-12-19 EP EP23196735.7A patent/EP4268973A3/en active Pending
- 2019-12-19 JP JP2021536235A patent/JP7457024B2/en active Active
- 2019-12-19 KR KR1020217023179A patent/KR102595109B1/en active IP Right Grant
- 2019-12-19 EP EP19831700.0A patent/EP3897999B1/en active Active
Also Published As
Publication number | Publication date |
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WO2020127713A1 (en) | 2020-06-25 |
DE102019135150A1 (en) | 2020-06-25 |
CN113453804B (en) | 2023-10-24 |
US20210379608A1 (en) | 2021-12-09 |
JP2022514927A (en) | 2022-02-16 |
US12017235B2 (en) | 2024-06-25 |
KR102595109B1 (en) | 2023-10-30 |
KR20210107777A (en) | 2021-09-01 |
EP4268973A3 (en) | 2024-01-24 |
EP4268973A2 (en) | 2023-11-01 |
CN113453804A (en) | 2021-09-28 |
JP7457024B2 (en) | 2024-03-27 |
EP3897999A1 (en) | 2021-10-27 |
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