EP3541719B1 - Discharge head for a liquid dispenser and liquid dispenser having such a discharge head - Google Patents

Discharge head for a liquid dispenser and liquid dispenser having such a discharge head Download PDF

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Publication number
EP3541719B1
EP3541719B1 EP17803841.0A EP17803841A EP3541719B1 EP 3541719 B1 EP3541719 B1 EP 3541719B1 EP 17803841 A EP17803841 A EP 17803841A EP 3541719 B1 EP3541719 B1 EP 3541719B1
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EP
European Patent Office
Prior art keywords
throttle
liquid
discharge head
channel
throttle body
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.)
Active
Application number
EP17803841.0A
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German (de)
French (fr)
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EP3541719A1 (en
Inventor
Tobias Baumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
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Aptar Radolfzell GmbH
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Publication of EP3541719A1 publication Critical patent/EP3541719A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/18—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages for discharging drops; Droppers
    • 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
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3093—Recirculation valves, i.e. the valve element opens a passage to the nozzle and simultaneously closes at least partially a return passage the feeding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
    • B65D47/2062—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem
    • B65D47/2075—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem in which the stem is raised by the pressure of the contents and thereby opening the valve
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes

Definitions

  • the invention relates to a discharge head for a liquid dispenser and a liquid dispenser with such a discharge head. It is preferably a discharge head or a liquid dispenser for dispensing cosmetic or pharmaceutical liquids in the form of drops.
  • Generic liquid dispensers and their discharge heads are usually designed to dispense liquid that is supplied in a predetermined liquid flow area and / or pressure area in the desired form, for example in the form of individual drops. If the liquid dispenser is supplied with liquid that is conveyed directly by the user, however, a precisely defined feed pressure or feed liquid flow cannot be guaranteed. For example, a user can squeeze a squeeze bottle much more strongly than intended.
  • a throttle device is therefore provided in the outlet channel, i.e. a section within which, for example, tight orifices cause sufficiently high friction in the liquid and between the liquid and walls to sufficiently reduce excessively high liquid pressure.
  • this plays a major role, since only such a throttling can ensure that the pressurization of the liquid by the user does not cause a discharge jet instead of drops.
  • such a throttle device is also problematic in some respects.
  • it can undesirably prevent liquid from the outlet channel from being sucked back into the liquid reservoir by the negative pressure created in the liquid reservoir after the discharge process has ended.
  • the differential pressure between the liquid reservoir and an environment during discharge can be significantly above 1 bar
  • the principle of the negative pressure for sucking back liquid from the outlet channel into the liquid reservoir can never be more than 1 bar. In practice it is considerably lower.
  • the object of the invention is therefore to develop a generic discharge head in such a way that it allows a throttled discharge of liquid, in particular in the form of drops, and yet reliably enables emptying or partial emptying of the outlet channel in the direction of the liquid reservoir after completion of the discharge process.
  • a discharge head which has a housing and a coupling device for attachment to a liquid reservoir. Furthermore, the discharge head has a discharge opening through which liquid can be discharged into a surrounding atmosphere, and an outlet channel which extends from an inlet area pointing in the direction of the liquid reservoir to the discharge opening and by means of which the discharge opening can be supplied with liquid.
  • the discharge head has a throttle device with a throttle channel for reducing the liquid pressure and / or the liquid flow of the liquid flowing through the throttle device.
  • the throttle device is designed as a switchable throttle device in which a minimum free cross section of the throttle channel can be changed between a throttling state and a release state.
  • the design according to the invention thus provides that the throttle device performs greater throttling during the discharge of liquid, i.e. withdraws a higher proportion of the energy given by excess pressure in the liquid reservoir from the liquid than is the case after the discharge has ended when the liquid is subsequently sucked back.
  • the change between the throttling state with strong throttling and the release state with only slight throttling preferably takes place automatically, so that the user does not need to take any further measures beyond his normal handling steps for a liquid dispenser.
  • One possibility for designing a switchable throttle device is to provide an elastically deformable wall section in the throttle device, which is displaced by a pressure difference or associated operating parameters and thus has a throttling effect on the throttle channel to different degrees.
  • the throttle device has a throttle body that can be displaced in the throttle channel between a release position and a throttle position.
  • This throttle body is preferably an inherently rigid body which is usually made of a plastic customary in the dispenser area and which, depending on its position, influences the flow resistance caused by the throttle device.
  • a shape of such a throttle body which is advantageous because there is no need for orientation is that of the spherical throttle body.
  • the throttle body In relation to an upright position of the discharge head, the throttle body is preferably arranged at different heights in its release position and in its throttle position.
  • the throttle body is freely movable between the release position and the throttle position in such a way that it assumes the release position due to gravity in one case and the throttle position due to gravity in the upright position on the one hand and in an opposite overhead position on the other.
  • the throttle body changes its position within the throttle channel due to gravity or at least also due to gravity. If the liquid dispenser and with it the discharge head are in an upright position, in which the discharge opening usually points upwards and a bottom of the liquid reservoir for placing the dispenser down, the throttle body falls to its lowest possible position, which also represents its release position. It can thus greatly reduce the flow resistance for the liquid flowing back out of the outlet channel. If the dispenser and the discharge head are in an overhead position, in which the bottom of the liquid reservoir points upwards and / or the discharge opening points downwards, the throttle body falls in the opposite direction into its lowest possible position, which with this orientation of the dispenser the Throttle position is. Here, the throttle body increases the flow resistance by leaving only a smaller partial cross-section of the throttle channel free for the flow of exiting liquid.
  • the throttle body does not float, it preferably has a higher density than the liquid held in the liquid reservoir.
  • the throttle body can also be arranged in the throttle channel in such a way that it is displaced in the direction of its throttle position by the liquid flowing out through the throttle device and / or that it is displaced in the direction of its release position by the liquid flowing in through the throttle device.
  • the throttle body is arranged in such a way that it is automatically entrained by the flow of liquid pointing in one or the other direction and thereby assumes its end position, the throttle position or the release position.
  • the throttle body is particularly preferably displaceable between a throttle position and a release position, which are spaced apart from one another in the direction of flow of the liquid.
  • the discharge head is preferably designed in such a way that the displacement of the throttle body can be changed both as a result of gravitation and as a result of the flow. This ensures that the throttle body assumes the throttle position when liquid is discharged and the release position when liquid is sucked back.
  • the weight force and the liquid pressure move the throttle body in the same direction.
  • the throttle channel which is in particular preferably designed as an elongated channel, preferably has an inflow opening and an outflow opening at the end and preferably at the two opposite end faces.
  • the throttle body is arranged both in a release position and in its throttle position between this inflow opening and this outflow opening.
  • the throttle channel preferably has at least one side opening, in particular in a jacket region of a cylindrical outer wall of the throttle channel, the throttle body being arranged between the side opening and the outflow opening when in the throttle position and the throttle body arrangement not being between the side opening and the outflow opening in the release position Outflow opening is arranged.
  • This design accordingly provides that the liquid path of the liquid from the liquid reservoir is divided into two branches up to the outflow opening of the throttle channel pointing in the discharge direction during discharge.
  • liquid can penetrate into the throttle channel through the inflow opening, in particular preferably at the front.
  • it can penetrate into the throttle channel through the at least one side opening described.
  • the throttle device has an elastically deflectable spring device, by means of which the throttle body is acted upon by force in the direction of its release position or in the direction of its throttle position.
  • Said spring device can act either in the direction of the throttle position or in the direction of the release position. If it acts in the direction of the throttle position, it is ensured to a particularly high degree that the throttle body assumes the throttle position particularly reliably after liquid has been sucked back into the liquid reservoir. In particular, this is advantageous because it prevents, when the liquid dispenser is operated, a short period of time until the throttle body has assumed its throttling position and during which liquid can escape in an unthrottled manner.
  • the spring device can in particular be designed as a plastic spring, preferably as a helical spring made of plastic. Furthermore, the spring device can be designed in one piece with the throttle body.
  • the throttle channel can preferably be delimited on the outside by an outer wall, in particular in an elongated and cylindrical, preferably circular-cylindrical, shape. If one or more of the above-mentioned side openings are provided, these preferably break through the jacket-like outer wall.
  • the throttle body is arranged within the throttle channel, the throttle body and the outer wall of the throttle channel having corresponding stop surfaces by which the throttle body is secured in the throttle channel.
  • the outer wall delimits the throttle channel to the outside and is preferably perforated at the end opposite one another by the outflow opening and the inflow opening.
  • the throttle body is preferably secured in a form-fitting manner within the throttle channel by the stop surfaces.
  • a lead-in bevel is preferably assigned to each of the stop surfaces so that the throttle body can be pressed into the throttle channel with deflection of the stop surfaces during assembly, but is then reliably protected against slipping out.
  • the outer wall of the throttle channel can in particular have a plurality of deflectable webs extending in a longitudinal direction of the throttle channel, preferably three or four webs, at the end of which the stop surfaces for the throttle body are provided.
  • the use of a plurality of webs means that the throttle body is reliably guided in the throttle channel.
  • the areas between the webs serve as side openings in the sense described above.
  • isolated webs also means that they can be deflected independently of one another, so that a design in such a way that the throttle body can be introduced into the throttle channel with deformation of the webs is comparatively easy.
  • An outlet valve is preferably provided in the outlet channel, which closes when there is a slight pressure difference, but opens bidirectionally when there is sufficient overpressure or underpressure in the liquid reservoir, so that it not only allows discharge when there is sufficient overpressure, but also does not prevent liquid from being sucked back into the liquid reservoir.
  • a discharge head according to the invention is provided to allow the liquid reservoir to be ventilated via the outlet channel.
  • the liquid dispenser encompassed by the invention for dispensing liquid in particular for dispensing cosmetic or pharmaceutical liquids, has a discharge head of the type described above with a discharge opening for dispensing liquid into a surrounding atmosphere. It also has a liquid reservoir which is connected to a housing of the discharge head by a releasable coupling device or a one-piece design.
  • the liquid dispenser is preferably designed as a drop dispenser.
  • the liquid reservoir can in particular be a squeeze bottle or a tube.
  • the internal volume of a liquid reservoir for a liquid dispenser according to the invention is preferably less than 300 ml, preferably less than 100 ml, in particular preferably less than 50 ml.
  • the liquid reservoir is preferably filled with a cosmetic or pharmaceutical liquid in accordance with the intended use.
  • Fig. 1 shows a liquid dispenser 100 according to the invention.
  • This has, as a main component, a liquid reservoir 90 in the form of a squeeze bottle which, as intended, is subjected to force in the area of actuating surfaces 92 for the purpose of discharge.
  • a discharge head 10 the housing 20 of which consists of two components 22 and 26, is placed on the liquid reservoir 90.
  • the component 26 is an applicator tip, at the distal end of which a discharge opening 38 is provided, which is surrounded by a drop formation surface 26A in the form of a spherical cap.
  • a cap 110 is provided in order to secure the liquid dispenser against drying out.
  • Fig. 2 shows a first embodiment of the liquid dispenser 100 in a sectional view.
  • the dispenser has the named liquid reservoir 90, to which the housing 20 with the base component 22 and the applicator component 26 is attached.
  • the base component 22 has a coupling device 24.
  • a one-piece design would also be conceivable.
  • a one-piece valve component of an outlet valve 36 is clamped with its edge region between the base component 22 and the applicator component 26.
  • This valve component is provided in an outlet channel 30, which extends from an inlet area 32 on the liquid storage side through a throttle device 34 and the said outlet valve 36 to the discharge opening 38.
  • Said throttle device 34 is designed to throttle the discharge of liquid sufficiently in such a way that the discharge of a continuous jet is prevented and the desired drop discharge takes place instead. When sucking back, however, there should be no or less throttling so that the liquid can return as completely as possible to the liquid reservoir 90.
  • the throttle device 34 of the first embodiment of the Figures 2 to 3C consists of only two components, namely an outer wall 51, which is approximately cylindrical and surrounds a throttle channel 50, and a throttle body 52 arranged in the throttle channel 50, which is designed as a spherical body in the case of this embodiment.
  • FIG. 3A shows an initial state.
  • the throttle body 52 at the distal end of the throttle channel 50 rests on stop surfaces 51B which are formed on the inside of the outer wall 51 at the distal end. Insertion bevels 51C are provided opposite these stop faces 51B, which have made it possible to introduce the throttle body 52 into the throttle channel 50 with the deflection of three outer wall webs 51A of the outer wall 51 during assembly.
  • the dispenser At the end of the discharge process, the dispenser will return to its upright position Fig. 2 spent.
  • the throttle body 52 now falls back to the distal end of the Throttle channel 50 in the area of the inflow opening 50A, so that liquid from the outlet channel is sucked back into the liquid reservoir 90 without problems due to the negative pressure in the latter.
  • the liquid flowing back supports this displacement of the throttle body 52.
  • the spherical throttle body 52 still takes up the same space in the constant cross section of the throttle channel 50.
  • the liquid flowing back can now get back into the liquid reservoir 90 through side openings 50C, which are provided between the deflectable outer wall webs 51A, with only slight throttling.
  • the outer wall 61 of the throttle device 34 is designed here very similarly to the previous variant. It in turn has outer wall webs 61A that are spaced apart from one another and extend in the longitudinal direction, with stop surfaces 61B at the end and insertion bevels 61C. As a result, a throttle body 62 is secured in the throttle channel 60.
  • the throttle body 62 is designed as a disk-shaped throttle body and is also integrally connected to a spring device 64 in the form of a plastic helical spring, on the side of which is opposite the throttle body 62 an abutment disk 65 is provided.
  • the throttle body 62 In the overhead position during discharge, as in Figure 5B is shown, the throttle body 62 is pressed against the proximal end of the throttle channel 60 and thereby blocks the major part of the outflow opening 60B.
  • the liquid can therefore only reach the discharge opening 38 in a strongly restricted form and is thus reliably discharged here in the form of drops.
  • the throttle body 62 is, however, when liquid is sucked back out of the outlet channel 30 through the liquid in the in Figure 5C illustrated way deflected, so that the throttling effect is significantly reduced. A large part of the liquid can thus be reliably drawn out of the outlet channel 30 through the throttle device 34 back into the liquid reservoir 90. In this case, it leaves the throttle device through the side openings 60C, since an inflow opening on the end face is permanently closed by the abutment disk 65 in this variant. However, this could also be designed with an opening in order to facilitate the exchange of liquid between the throttle channel 60 and the liquid reservoir 90.
  • the throttle device 34 likewise has a throttle channel 70 which extends from an inflow opening 70A to an outflow opening 70B.
  • a throttle body 72 is again provided, which as in the Figures 8A to 8C can be seen, which can be displaced relative to the housing 20 and the outer wall 71 by means of sliding sleeves.
  • a conical surface 71D is provided on the inside of the outer wall 71, which is interrupted in the area of three recesses 71E.
  • the throttle body 72 which is likewise partially conical in shape, is, as in the exemplary embodiment, in FIG Fig. 4 and 5 by a spring device 74, in this case preferably designed as a metallic helical spring, in the direction of its release position, shown in FIG Figure 8A , subjected to force.
  • a spring device 74 in this case preferably designed as a metallic helical spring, in the direction of its release position, shown in FIG Figure 8A , subjected to force.
  • the throttle body 72 is returned to its position by the spring device 74 Figures 8A and 8C pressed so that, as shown by the dotted lines, the liquid can be sucked from the outlet channel back into the liquid reservoir with only little flow resistance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Massaging Devices (AREA)
  • Closures For Containers (AREA)

Description

ANWENDUNGSGEBIET UND STAND DER TECHNIKAREA OF APPLICATION AND STATE OF THE ART

Die Erfindung betrifft einen Austragkopf für einen Flüssigkeitsspender und einen Flüssigkeitsspender mit einem solchen Austragkopf. Vorzugsweise handelt es sich um einen Austragkopf bzw. einen Flüssigkeitsspender zur Abgabe von kosmetischen oder pharmazeutischen Flüssigkeiten in Tropfenform.The invention relates to a discharge head for a liquid dispenser and a liquid dispenser with such a discharge head. It is preferably a discharge head or a liquid dispenser for dispensing cosmetic or pharmaceutical liquids in the form of drops.

Gattungsgemäße Flüssigkeitsspender und deren Austragköpfe sind üblicherweise dafür ausgebildet, Flüssigkeit, die in einem vorgegebenen Flüssigkeitsstrombereich und/oder Druckbereich zugeführt wird, in der gewünschten Form auszugeben, also beispielsweise in Form einzelner Tropfen. Sofern der Flüssigkeitsspender mit Flüssigkeit versorgt wird, die unmittelbar durch den Benutzer gefördert wird, kann jedoch ein genau definierter Zuführdruck oder Zuführflüssigkeitsstrom nicht gewährleistet werden. So kann ein Benutzer beispielsweise eine Quetschflasche wesentlich stärker zusammendrücken als vorgesehen ist.Generic liquid dispensers and their discharge heads are usually designed to dispense liquid that is supplied in a predetermined liquid flow area and / or pressure area in the desired form, for example in the form of individual drops. If the liquid dispenser is supplied with liquid that is conveyed directly by the user, however, a precisely defined feed pressure or feed liquid flow cannot be guaranteed. For example, a user can squeeze a squeeze bottle much more strongly than intended.

Bei einem gattungsgemäßen Flüssigkeitsspender ist daher im Auslasskanal eine Drosseleinrichtung vorgesehen, also eine Teilstrecke, innerhalb derer beispielsweise durch enge Blenden eine ausreichend hohe Reibung in der Flüssigkeit und zwischen der Flüssigkeit und Wandungen verursacht wird, um einen zu hohen Flüssigkeitsdruck ausreichend zu senken. Insbesondere im Kontext der bereits genannten Tropfenspender spielt dies eine große Rolle, da nur durch eine solche Drosselung gewährleistet werden kann, dass die Druckbeaufschlagung der Flüssigkeit durch den Benutzer nicht einen Austragstrahl statt Tropfen verursacht.In a generic liquid dispenser, a throttle device is therefore provided in the outlet channel, i.e. a section within which, for example, tight orifices cause sufficiently high friction in the liquid and between the liquid and walls to sufficiently reduce excessively high liquid pressure. In particular in the context of the drop dispensers already mentioned, this plays a major role, since only such a throttling can ensure that the pressurization of the liquid by the user does not cause a discharge jet instead of drops.

Eine solche Drosseleinrichtung ist jedoch in mancherlei Hinsicht auch problematisch. Insbesondere kann sie ungewünschterweise verhindern, dass Flüssigkeit aus dem Auslasskanal nach Beendigung des Auslassvorgangs durch den im Flüssigkeitsspeicher entstandenen Unterdruck zurück in den Flüssigkeitsspeicher gesogen wird. Während der Differenzdruck zwischen dem Flüssigkeitsspeicher und einer Umgebung beim Austragen deutlich oberhalb von 1 bar liegen kann, kann prinzipbedingt der Unterdruck zum Rücksaugen von Flüssigkeit aus dem Auslasskanal in den Flüssigkeitsspeicher nie mehr als 1 bar betragen. Praktisch liegt er wesentlich darunter.However, such a throttle device is also problematic in some respects. In particular, it can undesirably prevent liquid from the outlet channel from being sucked back into the liquid reservoir by the negative pressure created in the liquid reservoir after the discharge process has ended. While the differential pressure between the liquid reservoir and an environment during discharge can be significantly above 1 bar, the principle of the negative pressure for sucking back liquid from the outlet channel into the liquid reservoir can never be more than 1 bar. In practice it is considerably lower.

Aus WO2014/205587 ist ein Flüssigkeitsspender bekannt, der mit einem Austragkopf gemäß dem Oberbegriff des Anspruchs 1 ausgerüstet ist.Out WO2014 / 205587 a liquid dispenser is known which is equipped with a discharge head according to the preamble of claim 1.

AUFGABE UND LÖSUNGTASK AND SOLUTION

Aufgabe der Erfindung ist es daher, einen gattungsgemäßen Austragkopf dahingehend weiterzubilden, dass dieser zum einen eine gedrosselte Abgabe von Flüssigkeit, insbesondere in Tropfenform, gestattet und dennoch zuverlässig eine Entleerung oder Teilentleerung des Auslasskanals in Richtung des Flüssigkeitsspeichers nach Abschluss des Austragvorgangs ermöglicht.The object of the invention is therefore to develop a generic discharge head in such a way that it allows a throttled discharge of liquid, in particular in the form of drops, and yet reliably enables emptying or partial emptying of the outlet channel in the direction of the liquid reservoir after completion of the discharge process.

Es wird zur Lösung dieser Aufgabe ein Austragkopf vorgeschlagen, der ein Gehäuse und eine Kopplungseinrichtung zur Anbringung an einem Flüssigkeitsspeicher aufweist. Weiterhin weist der Austragkopf eine Austragöffnung, durch die hindurch Flüssigkeit in eine umgebende Atmosphäre ausgegeben werden kann, und einen Auslasskanal, der sich von einem in Richtung des Flüssigkeitsspeichers weisenden Einlassbereich bis zur Austragöffnung erstreckt und mittels dessen die Austragöffnung mit Flüssigkeit versorgt werden kann, auf.To achieve this object, a discharge head is proposed which has a housing and a coupling device for attachment to a liquid reservoir. Furthermore, the discharge head has a discharge opening through which liquid can be discharged into a surrounding atmosphere, and an outlet channel which extends from an inlet area pointing in the direction of the liquid reservoir to the discharge opening and by means of which the discharge opening can be supplied with liquid.

Der Austragkopf verfügt im Auslasskanal über eine Drosseleinrichtung mit einem Drosselkanal zur Verringerung des Flüssigdrucks und/oder des Flüssigkeitsstroms der die Drosseleinrichtung durchströmenden Flüssigkeit.In the outlet channel, the discharge head has a throttle device with a throttle channel for reducing the liquid pressure and / or the liquid flow of the liquid flowing through the throttle device.

Erfindungsgemäß ist die Drosseleinrichtung als schaltbare Drosseleinrichtung ausgebildet, bei der ein minimaler freier Querschnitt des Drosselkanals zwischen einem Drosselzustand und einem Freigabezustand veränderlich ist. In Richtung der Austragöffnung ausströmende Flüssigkeit unterliegt dadurch einer höheren Drosselwirkung als zurück in Richtung des Einlassbereichs einströmende Flüssigkeit.According to the invention, the throttle device is designed as a switchable throttle device in which a minimum free cross section of the throttle channel can be changed between a throttling state and a release state. As a result, liquid flowing out in the direction of the discharge opening is subject to a greater throttling effect than liquid flowing back in the direction of the inlet region.

Die erfindungsgemäße Gestaltung sieht somit vor, dass die Drosseleinrichtung während des Austragens von Flüssigkeit eine höhere Drosselung vornimmt, also der Flüssigkeit einen höheren Anteil der durch Überdruck im Flüssigkeitsspeicher gegebenen Energie entzieht, als es nach Beendigung des Austrags beim anschließenden Rücksaugen von Flüssigkeit der Fall ist. Der Wechsel zwischen dem Drosselzustand mit starker Drosselung und dem Freigabezustand mit nur geringer Drosselung erfolgt vorzugsweise gleichsam automatisch, so dass der Benutzer jenseits seiner normalen Handhabungsschritte für einen Flüssigkeitsspender keine weiteren Maßnahmen zu beachten braucht.The design according to the invention thus provides that the throttle device performs greater throttling during the discharge of liquid, i.e. withdraws a higher proportion of the energy given by excess pressure in the liquid reservoir from the liquid than is the case after the discharge has ended when the liquid is subsequently sucked back. The change between the throttling state with strong throttling and the release state with only slight throttling preferably takes place automatically, so that the user does not need to take any further measures beyond his normal handling steps for a liquid dispenser.

Eine Möglichkeit zur Gestaltung einer schaltbaren Drosseleinrichtung liegt im Vorsehen eines elastisch verformbaren Wandungsabschnittes in der Drosseleinrichtung, welcher durch eine Druckdifferenz oder hiermit einhergehenden Betriebsparametern verlagert wird und somit den Drosselkanal in verschiedenem Maße drosselnd beeinflusst.One possibility for designing a switchable throttle device is to provide an elastically deformable wall section in the throttle device, which is displaced by a pressure difference or associated operating parameters and thus has a throttling effect on the throttle channel to different degrees.

Von Vorzug ist jedoch eine Gestaltung, bei der die Drosseleinrichtung über einen im Drosselkanal zwischen einer Freigabestellung und einer Drosselstellung verlagerbaren Drosselkörper verfügt. Bei diesem Drosselkörper handelt es sich vorzugsweise um einen in sich starren Körper, der meist aus einem im Spenderbereich üblichen Kunststoff gefertigt ist und der in Abhängigkeit seiner Stellung den durch die Drosseleinrichtung bewirkten Strömungswiderstand beeinflusst. Eine aufgrund fehlenden Orientierungsbedarfes vorteilhafte Formgebung eines solchen Drosselkörpers ist die des kugelförmigen Drosselkörpers.However, a design is preferred in which the throttle device has a throttle body that can be displaced in the throttle channel between a release position and a throttle position. This throttle body is preferably an inherently rigid body which is usually made of a plastic customary in the dispenser area and which, depending on its position, influences the flow resistance caused by the throttle device. A shape of such a throttle body which is advantageous because there is no need for orientation is that of the spherical throttle body.

Bezogen auf eine aufrechte Position des Austragkopfes ist der Drosselkörper in seiner Freigabestellung und in seiner Drosselstellung vorzugsweise auf unterschiedlicher Höhe angeordnet.In relation to an upright position of the discharge head, the throttle body is preferably arranged at different heights in its release position and in its throttle position.

Der Drosselkörper ist bei einer solchen Gestaltung zwischen der Freigabestellung und der Drosselstellung derart frei beweglich, dass er bei aufrechter Position einerseits und bei einer entgegengesetzten Überkopflage andererseits in einem Falle schwerkraftbedingt die Freigabestellung und im anderen Falle schwerkraftbedingt die Drosselstellung einnimmt.With such a design, the throttle body is freely movable between the release position and the throttle position in such a way that it assumes the release position due to gravity in one case and the throttle position due to gravity in the upright position on the one hand and in an opposite overhead position on the other.

Bei dieser Gestaltung ist somit vorgesehen, dass der Drosselkörper seine Lage innerhalb des Drosselkanals schwerkraftbedingt oder zumindest auch schwerkraftbedingt ändert. Befindet sich der Flüssigkeitsspender und mit ihm der Austragkopf in einer aufrechten Stellung, bei der die Austragöffnung üblicherweise nach oben weist und ein Boden des Flüssigkeitsspeichers zum Hinstellen des Spenders nach unten weist, so fällt der Drosselkörper auf seine tiefstmögliche Stellung, die gleichzeitig seine Freigabestellung darstellt. Er kann somit den Strömungswiderstand für die zurückströmende Flüssigkeit aus dem Auslasskanal stark verringern. Befindet sich der Spender und der Austragkopf in einer Überkopflage, in der der Boden des Flüssigkeitsspeichers nach oben weist und/oder die Austragöffnung nach unten weist, so fällt der Drosselkörper in entgegengesetzter Richtung in seine dann unterste mögliche Stellung, welches bei dieser Ausrichtung des Spenders die Drosselstellung ist. Hier bewirkt der Drosselkörper eine Erhöhung des Strömungswiderstandes, indem er nur einen kleineren Teilquerschnitt des Drosselkanalsfürdie Durchströmung von austretender Flüssigkeit freilässt.In this design, it is thus provided that the throttle body changes its position within the throttle channel due to gravity or at least also due to gravity. If the liquid dispenser and with it the discharge head are in an upright position, in which the discharge opening usually points upwards and a bottom of the liquid reservoir for placing the dispenser down, the throttle body falls to its lowest possible position, which also represents its release position. It can thus greatly reduce the flow resistance for the liquid flowing back out of the outlet channel. If the dispenser and the discharge head are in an overhead position, in which the bottom of the liquid reservoir points upwards and / or the discharge opening points downwards, the throttle body falls in the opposite direction into its lowest possible position, which with this orientation of the dispenser the Throttle position is. Here, the throttle body increases the flow resistance by leaving only a smaller partial cross-section of the throttle channel free for the flow of exiting liquid.

Damit der Drosselkörper nicht aufschwimmt, weist er vorzugsweise eine höhere Dichte als die im Flüssigkeitsspeicher vorgehaltene Flüssigkeit auf.So that the throttle body does not float, it preferably has a higher density than the liquid held in the liquid reservoir.

Der Drosselkörper kann auch derart im Drosselkanal angeordnet sein, dass er durch die durch die Drosseleinrichtung hindurch ausströmender Flüssigkeit in Richtung seiner Drosselstellung verlagert wird und/oder dass er durch die durch die Drosseleinrichtung hindurch einströmende Flüssigkeit in Richtung seiner Freigabestellung verlagert wird.The throttle body can also be arranged in the throttle channel in such a way that it is displaced in the direction of its throttle position by the liquid flowing out through the throttle device and / or that it is displaced in the direction of its release position by the liquid flowing in through the throttle device.

Bei dieser beschriebenen Ausgestaltung ist der Drosselkörper derart angeordnet, dass er gleichsam automatisch vom in die eine oder die andere Richtung weisenden Flüssigkeitsstrom mitgerissen wird und dadurch seine Endlage, die Drosselstellung oder die Freigabestellung, einnimmt. Der Drosselkörper ist hierfür insbesondere vorzugsweise zwischen einer Drosselstellung und einer Freigabestellung verlagerbar, die in Strömungsrichtung der Flüssigkeit voneinander beabstandet sind.In this embodiment described, the throttle body is arranged in such a way that it is automatically entrained by the flow of liquid pointing in one or the other direction and thereby assumes its end position, the throttle position or the release position. For this purpose, the throttle body is particularly preferably displaceable between a throttle position and a release position, which are spaced apart from one another in the direction of flow of the liquid.

Diese Technik gestattet es, auf die oben beschriebene unterschiedliche Höhe der Drosselstellung und der Freigabestellung des Drosselkörpers zu verzichten. Vorzugsweise jedoch ist der Austragkopf derart gestaltet, dass die Verlagerung des Drosselkörpers sowohl gravitationsbedingtals auch durch die Strömung bedingt veränderbar ist. Hierdurch wird besonders zuverlässig erreicht, dass der Drosselkörper beim Austrag von Flüssigkeit die Drosselstellung und beim Rücksaugen von Flüssigkeit die Freigabestellung einnimmt. Gerade bei hochviskosen Flüssigkeiten wie Lotionen und Cremes stellt es einen Vorteil dar, wenn sowohl die Gewichtskraft als auch der Flüssigkeitsdruck gleichgerichtet die Verlagerung des Drosselkörpers bewirken.This technique makes it possible to dispense with the different height of the throttle position and the release position of the throttle body described above. However, the discharge head is preferably designed in such a way that the displacement of the throttle body can be changed both as a result of gravitation and as a result of the flow. This ensures that the throttle body assumes the throttle position when liquid is discharged and the release position when liquid is sucked back. In the case of highly viscous liquids such as lotions and creams in particular, it is an advantage if both the weight force and the liquid pressure move the throttle body in the same direction.

Vorzugsweise weist der Drosselkanal, der insbesondere vorzugsweise als länglicher Kanal ausgebildet ist, endseitig und vorzugsweise an den beiden gegenüberliegenden Stirnseiten eine Einströmöffnung und eine Ausströmöffnung auf. Der Drosselkörper ist sowohl in einer Freigabestellung als auch in seiner Drosselstellung zwischen dieser Einströmöffnung und dieser Ausströmöffnung angeordnet ist.The throttle channel, which is in particular preferably designed as an elongated channel, preferably has an inflow opening and an outflow opening at the end and preferably at the two opposite end faces. The throttle body is arranged both in a release position and in its throttle position between this inflow opening and this outflow opening.

Zusätzlich weist der der Drosselkanal vorzugsweise mindestens eine Seitenöffnung, insbesondere in einem Mantelbereich einer zylindrischen Außenwandung des Drosselkanals auf, wobei der Drosselkörper bei Anordnung in der Drosselstellung zwischen der Seitenöffnung und der Ausströmöffnungangeordnet ist und wobei der Drosselkörper Anordnung in der Freigabestellung nicht zwischen der Seitenöffnung und der Ausströmöffnung angeordnet ist.In addition, the throttle channel preferably has at least one side opening, in particular in a jacket region of a cylindrical outer wall of the throttle channel, the throttle body being arranged between the side opening and the outflow opening when in the throttle position and the throttle body arrangement not being between the side opening and the outflow opening in the release position Outflow opening is arranged.

Diese Gestaltung sieht demnach vor, dass der Flüssigkeitspfad der Flüssigkeit aus dem Flüssigkeitsspeicher bis zur beim Austrag in Austragrichtung weisenden Ausströmöffnung des Drosselkanalszweigeteilt ist. Flüssigkeit kann einerseits durch die insbesondere vorzugsweise stirnseitige Einströmöffnung in den Drosselkanal eindringen. Sie kann andererseits durch die beschriebene mindestens eine Seitenöffnung in den Drosselkanal eindringen. Eine solche Gestaltung ist deshalb von Vorteil, da der Drosselkörper durch Verbringung in seiner Freigabestellung gleichsam aus dem Strömungspfad der aus dem Auslasskanal zurückströmenden Flüssigkeit herausgezogen wird. Durch die stirnseitige Einströmöffnung jedoch wird der Drosselkörper bei erneutem Austrag von Flüssigkeit zuverlässig in Richtung seiner Drosselstellung kraftbeaufschlagt und verlagert.This design accordingly provides that the liquid path of the liquid from the liquid reservoir is divided into two branches up to the outflow opening of the throttle channel pointing in the discharge direction during discharge. On the one hand, liquid can penetrate into the throttle channel through the inflow opening, in particular preferably at the front. On the other hand, it can penetrate into the throttle channel through the at least one side opening described. Such a design is therefore of Advantage, since the throttle body is pulled out of the flow path of the liquid flowing back from the outlet channel by moving it into its release position. Due to the frontal inflow opening, however, the throttle body is reliably acted upon and displaced in the direction of its throttle position when liquid is discharged again.

Bei einer bevorzugten Ausgestaltung weist die Drosseleinrichtung eine elastisch auslenkbare Federeinrichtungauf, mittels derer der Drosselkörper in Richtung seiner Freigabestellung oder in Richtung seiner Drosselstellung kraftbeaufschlagt wird.In a preferred embodiment, the throttle device has an elastically deflectable spring device, by means of which the throttle body is acted upon by force in the direction of its release position or in the direction of its throttle position.

Die genannte Federeinrichtung kann entweder in Richtung der Drosselstellung oder in Richtung der Freigabestellung wirken. Wirkt sie in Richtung der Drosselstellung, so ist in besonders hohem Maße gewährleistet, dass der Drosselkörper besonders zuverlässig nach der Rücksaugung von Flüssigkeit in den Flüssigkeitsspeicher die Drosselstellung einnimmt. Insbesondere ist dies von Vorteil, da hierdurch verhindert wird, dass bei einer Betätigung des Flüssigkeitsspenders zunächst ein kurzer Zeitraum verbleibt, bis der Drosselkörper seine Drosselstellung eingenommen hat und währenddessen Flüssigkeit in ungedrosselter Art austreten kann. Bei einer Kraftbeaufschlagung des Drosselkörpers in Richtung seiner Freigabestellung mittels der Federeinrichtung ist in höherem Maße gewährleistet, dass der Drosselkörper nicht, beispielsweise bedingtdurch die Klebrigkeit der auszutragenden Flüssigkeit, in seiner Drosselstellung verbleibt und somit ein Rücksaugen der Flüssigkeit aus dem Auslasskanal verhindert.Said spring device can act either in the direction of the throttle position or in the direction of the release position. If it acts in the direction of the throttle position, it is ensured to a particularly high degree that the throttle body assumes the throttle position particularly reliably after liquid has been sucked back into the liquid reservoir. In particular, this is advantageous because it prevents, when the liquid dispenser is operated, a short period of time until the throttle body has assumed its throttling position and during which liquid can escape in an unthrottled manner. When force is applied to the throttle body in the direction of its release position by means of the spring device, it is ensured to a greater extent that the throttle body does not remain in its throttle position, for example due to the stickiness of the liquid to be discharged, and thus prevents the liquid from being sucked back out of the outlet channel.

Die Federeinrichtung kann insbesondere als Kunststofffeder ausgebildet sein, vorzugsweise als Schraubenfeder aus Kunststoff. Weiterhin kann die Federeinrichtung einstückig mit dem Drosselkörper ausgebildet sein.The spring device can in particular be designed as a plastic spring, preferably as a helical spring made of plastic. Furthermore, the spring device can be designed in one piece with the throttle body.

Die Vermeidung von Metall als Material für die Federeinrichtung wird aufgrund von Korrosionsgefahr als vorteilhaft angesehen. Zudem sind Kunststofffedern üblicherweise kostengünstiger. Eine besonders einfache Gestaltung lässt sich erzielen, wenn sowohl die Einstückigkeit zwischen Federeinrichtung und Drosselkörper als auch die Ausgestaltung aus Kunststoff realisiert ist.Avoiding metal as the material for the spring device is considered advantageous due to the risk of corrosion. In addition, plastic springs are usually cheaper. A particularly simple design can be achieved if both the one-piece design between the spring device and the throttle body and the plastic design are realized.

Der Drosselkanal kann vorzugsweise nach außen durch eine Außenwandung begrenzt sein, insbesondere in länglicher und zylindrischer, vorzugsweise kreiszylindrischer, Form. Sofern eine oder mehrere der oben genannten Seitenöffnungen vorgesehen sind, durchbricht diese vorzugsweise die mantelartige Außenwandung. Der Drosselkörper ist innerhalb der Drosselkanals angeordnet, wobei der Drosselkörper und die Außenwandung des Drosselkanals korrespondierte Anschlagflächen aufweisen, durch die der Drosselkörper im Drosselkanal gesichert ist.The throttle channel can preferably be delimited on the outside by an outer wall, in particular in an elongated and cylindrical, preferably circular-cylindrical, shape. If one or more of the above-mentioned side openings are provided, these preferably break through the jacket-like outer wall. The throttle body is arranged within the throttle channel, the throttle body and the outer wall of the throttle channel having corresponding stop surfaces by which the throttle body is secured in the throttle channel.

Die Außenwandung begrenzt den Drosselkanal nach außen und ist vorzugsweise stirnseitig einander gegenüberliegend von der Ausströmöffnung und der Einströmöffnung durchbrochen. Durch die Anschlagsflächen wird der Drosselkörper vorzugsweise formschlüssig innerhalb des Drosselkanals gesichert. Vorzugsweise ist den Anschlagsflächen jeweils eine Einführschräge zugeordnet, so dass der Drosselkörper unter Auslenkung der Anschlagsflächen bei der Montage in den Drosselkanal hineingedrückt werden kann, hierin dann jedoch sicher gegen ein Herausrutschen geschützt ist.The outer wall delimits the throttle channel to the outside and is preferably perforated at the end opposite one another by the outflow opening and the inflow opening. The throttle body is preferably secured in a form-fitting manner within the throttle channel by the stop surfaces. A lead-in bevel is preferably assigned to each of the stop surfaces so that the throttle body can be pressed into the throttle channel with deflection of the stop surfaces during assembly, but is then reliably protected against slipping out.

Die Außenwandung des Drosselkanals kann insbesondere eine Mehrzahl von auslenkbaren und in einer Längsrichtung des Drosselkanals erstreckten Stegen aufweisen, vorzugsweise drei oder vier Stege, an deren Ende insbesondere vorzugsweise die Anschlagsflächen für den Drosselkörper vorgesehen sind.The outer wall of the throttle channel can in particular have a plurality of deflectable webs extending in a longitudinal direction of the throttle channel, preferably three or four webs, at the end of which the stop surfaces for the throttle body are provided.

Die Verwendung einer Mehrzahl von Stegen, insbesondere die Verwendung von drei oder vier Stegen, führt dazu, dass der Drosselkörper zuverlässig im Drosselkanal geführt ist. Zudem dienen die Bereiche zwischen den Stegen als Seitenöffnung im oben beschriebenen Sinne. Die Verwendung isolierter Stege führt zudem dazu, dass diese unabhängig voneinander ausgelenkt werden können, so dass eine Auslegung dahingehend, dass der Drosselkörper unter Verformung der Stege in den Drosselkanal eingeführt werden kann, vergleichsweise leicht fällt.The use of a plurality of webs, in particular the use of three or four webs, means that the throttle body is reliably guided in the throttle channel. In addition, the areas between the webs serve as side openings in the sense described above. The use of isolated webs also means that they can be deflected independently of one another, so that a design in such a way that the throttle body can be introduced into the throttle channel with deformation of the webs is comparatively easy.

Im Auslasskanal ist vorzugsweise eine Auslassventil vorgesehen, welches bei geringer Druckdifferenz schließt, jedoch bidirektional bei ausreichendem Überdruck oder Unterdruck im Flüssigkeitsspeicher öffnet, so dass es nicht nur einen Austrag bei ausreichendem Überdruck gestattet, sondern auch die Rücksaugung von Flüssigkeit in den Flüssigkeitsspeicher nicht verhindert. Ein erfindungsgemäßer Austragkopf ist dafür vorgesehen, die Belüftung des Flüssigkeitsspeichers über den Auslasskanal erfolgen zu lassen.An outlet valve is preferably provided in the outlet channel, which closes when there is a slight pressure difference, but opens bidirectionally when there is sufficient overpressure or underpressure in the liquid reservoir, so that it not only allows discharge when there is sufficient overpressure, but also does not prevent liquid from being sucked back into the liquid reservoir. A discharge head according to the invention is provided to allow the liquid reservoir to be ventilated via the outlet channel.

Der von der Erfindung umfasste Flüssigkeitsspender zur Ausbringung von Flüssigkeit, insbesondere zur Ausbringung von kosmetischen oder pharmazeutischen Flüssigkeiten, verfügt über einen Austragkopf der oben beschriebenen Art mit einer Austragöffnung zur Ausgabe von Flüssigkeit in eine umgebende Atmosphäre. Er verfügt weiterhin über einen Flüssigkeitsspeicher, der durch eine lösbare Kopplungseinrichtung oder eine einstückige Gestaltung mit einem Gehäuse des Austragkopfes verbunden ist.The liquid dispenser encompassed by the invention for dispensing liquid, in particular for dispensing cosmetic or pharmaceutical liquids, has a discharge head of the type described above with a discharge opening for dispensing liquid into a surrounding atmosphere. It also has a liquid reservoir which is connected to a housing of the discharge head by a releasable coupling device or a one-piece design.

Der Flüssigkeitsspender ist vorzugsweise als Tropfenspender ausgebildet.The liquid dispenser is preferably designed as a drop dispenser.

Insbesondere bei einem solchen Tropfenspender ist es wichtig, die Flüssigkeit vor dem Austrag zu drosseln, damit die Tropfenbildung zuverlässig erfolgen kann. Allerdings ist auch gerade hier das zuverlässige Rücksaugen des Mediums aus dem Auslasskanal von großer Relevanz, da ein einmal mit getrocknetem Medium befüllter Auslasskanal gerade aufgrund der Drosselwirkung kaum ausreichend druckbeaufschlagt werden kann, um diesen wieder von getrocknetem Medium zu befreien. Beim Flüssigkeitsspeicher kann es sich insbesondere um eine Quetschflasche oder eine Tube handeln.With such a drop dispenser in particular, it is important to throttle the liquid before it is discharged so that the drop formation can take place reliably. However, the reliable sucking back of the medium from the outlet channel is also of great relevance here, since an outlet channel once filled with dried medium can hardly be pressurized enough due to the throttling effect to free it again from dried medium. The liquid reservoir can in particular be a squeeze bottle or a tube.

Das Innenvolumen eines Flüssigkeitsspeichers für einen erfindungsgemäßen Flüssigkeitsspender beträgt vorzugsweise weniger als 300 ml, vorzugsweise weniger als 100 ml, insbesondere vorzugsweise weniger als 50 ml.The internal volume of a liquid reservoir for a liquid dispenser according to the invention is preferably less than 300 ml, preferably less than 100 ml, in particular preferably less than 50 ml.

Der Flüssigkeitsspeicher ist dem vorgesehenen Anwendungszweck entsprechend vorzugsweise mit einer kosmetischen oder pharmazeutischen Flüssigkeit befüllt.The liquid reservoir is preferably filled with a cosmetic or pharmaceutical liquid in accordance with the intended use.

KURZBESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

Weitere Vorteile und Aspekte der Erfindung ergeben sich aus den Ansprüchen und aus der nachfolgenden Beschreibung von bevorzugten Ausführungsbeispielen der Erfindung, die nachfolgend anhand der Figuren erläutert sind.

  • Fig. 1 zeigt einen erfindungsgemäßen Flüssigkeitsspender in einer Gesamtdarstellung.
  • Fig. 2 sowie 3A bis 3C zeigen ein erstes Ausführungsbeispiel des Flüssigkeitsspenders in einer geschnittenen Darstellung sowie seine Drosseleinrichtung bei Verwendung des Flüssigkeitsspenders.
  • Fig. 4 sowie 5A bis 5C zeigen ein zweites Ausführungsbeispiel des Flüssigkeitsspenders in einer geschnittenen Darstellung sowie seine Drosseleinrichtung bei Verwendung des Flüssigkeitsspenders.
  • Fig. 6 und 7 sowie 8A bis 8C zeigen ein drittes Ausführungsbeispiel des Flüssigkeitsspenders in einer geschnittenen Darstellung sowie seine Drosseleinrichtung in perspektivischer Darstellung und bei Verwendung des Flüssigkeitsspenders.
Further advantages and aspects of the invention emerge from the claims and from the following description of preferred exemplary embodiments of the invention, which are explained below with reference to the figures.
  • Fig. 1 shows a liquid dispenser according to the invention in an overall view.
  • Fig. 2 and FIGS. 3A to 3C show a first exemplary embodiment of the liquid dispenser in a sectional view and its throttle device when the liquid dispenser is used.
  • Fig. 4 and FIGS. 5A to 5C show a second exemplary embodiment of the liquid dispenser in a sectional view and its throttle device when the liquid dispenser is used.
  • Fig. 6 and 7th and FIGS. 8A to 8C show a third exemplary embodiment of the liquid dispenser in a sectional illustration and its throttle device in a perspective illustration and when the liquid dispenser is used.

DETAILLIERTE BESCHREIBUNG DER AUSFÜHRUNGSBEISPIELEDETAILED DESCRIPTION OF THE EMBODIMENTS

Fig. 1 zeigt einen erfindungsgemäßen Flüssigkeitsspender 100. Dieser weist als eine Hauptkomponenten einen Flüssigkeitsspeicher 90 in Art einer Quetschflasche auf, die bestimmungsgemäß im Bereich von Betätigungsflächen 92 zum Zwecke des Austrags kraftbeaufschlagt wird. Auf den Flüssigkeitsspeicher 90 ist ein Austragkopf 10 aufgesetzt, dessen Gehäuse 20 aus zwei Bauteilen 22 und 26 besteht. Das Bauteil 26 ist eine Applikatorspitze, an deren distalem Ende eine Austragöffnung 38 vorgesehen ist, welche von einer Tropfenbildungsfläche 26A in Form einer Kugelkalotte umgeben ist. Um den Flüssigkeitsspender gegen Austrocknen zu sichern, ist eine Kappe 110 vorgesehen. Fig. 1 shows a liquid dispenser 100 according to the invention. This has, as a main component, a liquid reservoir 90 in the form of a squeeze bottle which, as intended, is subjected to force in the area of actuating surfaces 92 for the purpose of discharge. A discharge head 10, the housing 20 of which consists of two components 22 and 26, is placed on the liquid reservoir 90. The component 26 is an applicator tip, at the distal end of which a discharge opening 38 is provided, which is surrounded by a drop formation surface 26A in the form of a spherical cap. In order to secure the liquid dispenser against drying out, a cap 110 is provided.

Fig. 2 zeigt ein erstes Ausführungsbeispiel des Flüssigkeitsspenders 100 in einer geschnittenen Darstellung. Ebenso wie die nachfolgend noch beschriebenen Ausführungsbeispiele verfügt der Spender über den genannten Flüssigkeitsspeicher 90, an dem das Gehäuse 20 mit dem Basisbauteil 22 und dem Applikatorbauteil 26 befestigt ist. Zum Zwecke des Aufrastens verfügt das Basisbauteil 22 über eine Kopplungseinrichtung 24. Alternativ wäre auch eine einstückige Ausgestaltung denkbar. Zwischen dem Basisbauteil 22 und dem Applikatorbauteil 26 ist ein einstückiges Ventilbauteil eines Auslassventils 36 mit seinem Randbereich eingeklemmt. Fig. 2 shows a first embodiment of the liquid dispenser 100 in a sectional view. Just like the exemplary embodiments described below, the dispenser has the named liquid reservoir 90, to which the housing 20 with the base component 22 and the applicator component 26 is attached. For the purpose of snapping on, the base component 22 has a coupling device 24. Alternatively, a one-piece design would also be conceivable. A one-piece valve component of an outlet valve 36 is clamped with its edge region between the base component 22 and the applicator component 26.

Dieses Ventilbauteil ist in einem Auslasskanal 30 vorgesehen, der sich von einem flüssigkeitsspeicherseitigen Einlassbereich 32 durch eine Drosseleinrichtung 34 und das genannte Auslassventil 36 bis zur Austragöffnung 38 erstreckt.This valve component is provided in an outlet channel 30, which extends from an inlet area 32 on the liquid storage side through a throttle device 34 and the said outlet valve 36 to the discharge opening 38.

Bei Kraftbeaufschlagung des Flüssigkeitsspeicher 90 in der Überkopflage des Flüssigkeitsspenders 100 mit nach unten weisender Austragöffnung 38 gelangt die Flüssigkeit vom Einlassbereich 32 durch die Drosseleinrichtung 34 und das Auslassventil 36 bis zur Austragöffnung 38 und wird dort in Tropfenform abgegeben. Sobald der Austrag abgeschlossen ist und der Benutzer die Kraftbeaufschlagung des Flüssigkeitsspeichers 90 beendet, kommt es im Flüssigkeitsspeicher zu einem Unterdruck und die Flüssigkeit aus dem Auslasskanal soll bestimmungsgemäß zurück in den Flüssigkeitsspeicher gesogen werden.When force is applied to the liquid reservoir 90 in the overhead position of the liquid dispenser 100 with the discharge opening 38 pointing downwards, the liquid passes from the inlet area 32 through the throttle device 34 and the outlet valve 36 to the discharge opening 38 and is discharged there in the form of drops. As soon as the discharge is complete and the user stops applying force to the liquid reservoir 90, a negative pressure occurs in the liquid reservoir and the liquid from the outlet channel is intended to be drawn back into the liquid reservoir as intended.

Die genannte Drosseleinrichtung 34 ist dafür ausgebildet, beim Austrag von Flüssigkeit diese derart ausreichend zu drosseln, dass die Abgabe eines kontinuierlichen Strahls verhindert wird und stattdessen die gewünschte Tropfenabgabe stattfindet. Beim Rücksaugen jedoch soll nicht oder weniger gedrosselt werden, damit die Flüssigkeit möglichst vollständig zurück in den Flüssigkeitsspeicher 90 gelangen kann.Said throttle device 34 is designed to throttle the discharge of liquid sufficiently in such a way that the discharge of a continuous jet is prevented and the desired drop discharge takes place instead. When sucking back, however, there should be no or less throttling so that the liquid can return as completely as possible to the liquid reservoir 90.

Der bis hier beschriebene Aufbau ist für alle drei nachfolgend beschriebenen Ausführungsbeispiele grundsätzlich identisch.The structure described so far is basically identical for all three exemplary embodiments described below.

Die Drosseleinrichtung 34 des ersten Ausführungsbeispiels der Fig. 2 bis 3C besteht aus nur zwei Bestandteilen besteht, nämlich einer Außenwandung 51, die in etwa zylindrisch ausgebildet ist und einen Drosselkanal 50 umgibt, sowie einem im Drosselkanal 50 angeordneten Drosselkörper 52, der im Falle dieserAusgestaltung als Kugelkörper ausgebildet ist.The throttle device 34 of the first embodiment of the Figures 2 to 3C consists of only two components, namely an outer wall 51, which is approximately cylindrical and surrounds a throttle channel 50, and a throttle body 52 arranged in the throttle channel 50, which is designed as a spherical body in the case of this embodiment.

Die Funktionsweise der Drosseleinrichtung 34 wird anhand der Fig. 3A bis 3C erläutert.The functioning of the throttle device 34 is based on Figures 3A to 3C explained.

Fig. 3A zeigt einen Ausgangszustand. Bei nicht benutztem und entsprechend der Fig. 2 aufrecht stehendem Flüssigkeitsspender 100 liegt der Drosselkörper 52 am distalen Ende des Drosselkanals 50 auf Anschlagsflächen 51B auf, die am distalen Ende innenseitig an der Außenwandung 51 angeformt sind. Diesen Anschlagsflächen 51B gegenüberliegend sind Einführschrägen 51C vorgesehen, die es während der Montage gestattet haben, den Drosselkörper 52 in den Drosselkanal 50 unter Auslenkungdreier Außenwandungsstege 51A derAußenwandung 51 einzubringen. Figure 3A shows an initial state. When not used and according to the Fig. 2 With the liquid dispenser 100 standing upright, the throttle body 52 at the distal end of the throttle channel 50 rests on stop surfaces 51B which are formed on the inside of the outer wall 51 at the distal end. Insertion bevels 51C are provided opposite these stop faces 51B, which have made it possible to introduce the throttle body 52 into the throttle channel 50 with the deflection of three outer wall webs 51A of the outer wall 51 during assembly.

Wenn ausgehend vom Zustand der Fig. 3A nun die Benutzung beginnt, so bringt der Benutzer den Spender in eine Überkopflage, so dass die Drosseleinrichtung 34 die Stellung der Fig. 3B einnimmt. Der Drosselkörper 52 fällt hierdurch schwerkraftbedingt an das gegenüberliegende, proximale Ende des Drosselkanals 50, an dem die Ausströmöffnung 50B vorgesehen ist. Reicht aufgrund eines zu geringen Dichteunterschiedes zwischen dem Drosselkörper 52 und der umgebenden Flüssigkeit die Schwerkraft nicht, um den Drosselkörper 52 in die Stellung der Fig. 3B zu verbringen, so wird dies jedoch spätestens durch den aufgebrachten Druck in der Flüssigkeit und deren Strömung erreicht.If, based on the state of the Figure 3A now the use begins, the user brings the dispenser into an overhead position, so that the throttle device 34 the position of the Figure 3B occupies. As a result of this, the throttle body 52 falls due to the force of gravity to the opposite, proximal end of the throttle channel 50 on which the outflow opening 50B is provided. If there is insufficient density difference between the throttle body 52 and the surrounding liquid, the force of gravity is insufficient to move the throttle body 52 into the position of Figure 3B However, this is achieved at the latest by the pressure applied in the liquid and its flow.

Wie sich anhand der gepunkteten Linien in Fig. 3B ersehen lässt, ist der Durchtrittspfad durch den Drosselkanal 50 für die Flüssigkeit hin zu einer Ausströmöffnung 50B jetzt deutlich verengt. Der Drosselkörper 52 füllt zum überwiegenden Teil den Querschnitt des Drosselkanals 50 unmittelbar vor der Ausströmöffnung 50B aus und bewirkt somit eine starke Drosselung der Flüssigkeit. Selbst bei starker Kraftbeaufschlagung des Flüssigkeitsspeichers 90 durch den Benutzer kommt es daher wie gewünscht zu einer Tropfenbildung.As can be seen from the dotted lines in Figure 3B As can be seen, the passage path through the throttle channel 50 for the liquid is now significantly narrowed towards an outflow opening 50B. The throttle body 52 for the most part fills the cross section of the throttle channel 50 directly in front of the outflow opening 50B and thus effects a strong throttling of the liquid. Even when the user applies a strong force to the liquid reservoir 90, drops are therefore formed as desired.

Nach Ende des Austragvorgangs wird der Spender wieder in seine aufrechte Stellung der Fig. 2 verbracht. Wie in Fig. 3C ersichtlich ist, fällt der Drosselkörper 52 nun wieder an das distale Ende des Drosselkanals 50 im Bereich der Einströmöffnung 50A, so dass Flüssigkeit aus dem Auslasskanal unproblematisch aufgrund des Unterdrucks im Flüssigkeitsspeicher 90 zurück in diesen eingesogen wird. Die zurückströmende Flüssigkeit unterstützt diese Verlagerung des Drosselkörpers 52.At the end of the discharge process, the dispenser will return to its upright position Fig. 2 spent. As in Figure 3C As can be seen, the throttle body 52 now falls back to the distal end of the Throttle channel 50 in the area of the inflow opening 50A, so that liquid from the outlet channel is sucked back into the liquid reservoir 90 without problems due to the negative pressure in the latter. The liquid flowing back supports this displacement of the throttle body 52.

Zwar nimmt der kugelförmige Drosselkörper 52 im gleichbleibenden Querschnitt des Drosselkanals 50 immer noch den gleichen Raum ein. Die zurückströmende Flüssigkeit kann jedoch nun durch Seitenöffnungen 50C, die zwischen den auslenkbaren Außenwandungsstegen 51A vorgesehen sind, bei nur geringer Drosselung zurück in den Flüssigkeitsspeicher 90 gelangen.The spherical throttle body 52 still takes up the same space in the constant cross section of the throttle channel 50. The liquid flowing back, however, can now get back into the liquid reservoir 90 through side openings 50C, which are provided between the deflectable outer wall webs 51A, with only slight throttling.

Bei der Ausgestaltung gemäß Fig. 4 bis 5C ist die Drosseleinrichtung etwas anders ausgebildet.When designing according to Figures 4 to 5C the throttle device is designed somewhat differently.

Wie sich anhand der Fig. 5A bis 5C ersehen lässt, ist die Außenwandung 61 der Drosseleinrichtung 34 hier sehr ähnlich wie bei der vorangehenden Variante gestaltet. Sie verfügt wiederum über voneinander beabstandete in Längsrichtung erstreckte Außenwandungsstege 61A mit endseitigen Anschlagsflächen 61B und Einführschrägen 61C. Hierdurch ist ein Drosselkörper 62 im Drosselkanal 60 gesichert.How the Figures 5A to 5C As can be seen, the outer wall 61 of the throttle device 34 is designed here very similarly to the previous variant. It in turn has outer wall webs 61A that are spaced apart from one another and extend in the longitudinal direction, with stop surfaces 61B at the end and insertion bevels 61C. As a result, a throttle body 62 is secured in the throttle channel 60.

Abweichend vom vorangegangenen Ausführungsbeispiel ist der Drosselkörper 62 hier als scheibenförmiger Drosselkörper ausgebildet und darüber hinaus einstückig mit einer Federeinrichtung 64 in Form einer Kunststoffschraubenfeder verbunden, an deren dem Drosselkörper 62 gegenüberliegender Seite eine Widerlagerscheibe 65 vorgesehen ist.In contrast to the previous embodiment, the throttle body 62 is designed as a disk-shaped throttle body and is also integrally connected to a spring device 64 in the form of a plastic helical spring, on the side of which is opposite the throttle body 62 an abutment disk 65 is provided.

Der Ablauf entsprechend dem zu den Fig. 3A bis 3C beschriebene Ablauf führt hier zu folgendem Verhalten.The process corresponds to the Figures 3A to 3C The sequence described here leads to the following behavior.

In der Überkopflage beim Austrag wird, wie in Fig. 5B dargestellt ist, der Drosselkörper 62 gegen das proximale Ende des Drosselkanals 60 gedrückt und versperrt hiermit den überwiegenden Teil der Ausströmöffnung 60B. Die Flüssigkeit kann somit nur in stark gedrosselter Form bis zur Austragöffnung 38 gelangen und wird somit hier zuverlässig in Tropfenform abgegeben.In the overhead position during discharge, as in Figure 5B is shown, the throttle body 62 is pressed against the proximal end of the throttle channel 60 and thereby blocks the major part of the outflow opening 60B. The liquid can therefore only reach the discharge opening 38 in a strongly restricted form and is thus reliably discharged here in the form of drops.

Nach Beendigung des Austragvorgangs wird der Drosselkörper 62 jedoch beim Rücksaugen von Flüssigkeit aus dem Auslasskanal 30 durch die Flüssigkeit in der in Fig. 5C verdeutlichten Weise ausgelenkt, so dass die Drosselwirkung deutlich verringert ist. Somit kann ein Großteil der Flüssigkeit zuverlässig aus dem Auslasskanal 30 durch die Drosseleinrichtung 34 hindurch zurück in den Flüssigkeitsspeicher 90 gesogen werden. Sie verlässt die Drosseleinrichtung hierbei durch die Seitenöffnungen 60C, da eine stirnseitige Einströmöffnung bei dieserVariante durch die Wiederlagerscheibe 65 permanent verschlossen ist. Allerdings könnte diese auch mit einer Durchbrechung ausgestaltet sein, um den Austausch von Flüssigkeit zwischen dem Drosselkanal 60 und dem Flüssigkeitsspeicher 90 zu erleichtern.After the discharge process has ended, the throttle body 62 is, however, when liquid is sucked back out of the outlet channel 30 through the liquid in the in Figure 5C illustrated way deflected, so that the throttling effect is significantly reduced. A large part of the liquid can thus be reliably drawn out of the outlet channel 30 through the throttle device 34 back into the liquid reservoir 90. In this case, it leaves the throttle device through the side openings 60C, since an inflow opening on the end face is permanently closed by the abutment disk 65 in this variant. However, this could also be designed with an opening in order to facilitate the exchange of liquid between the throttle channel 60 and the liquid reservoir 90.

Beim Ausführungsbeispiel gemäß der Fig. 6 bis 8C weist die Drosseleinrichtung 34 ebenfalls einen Drosselkanal 70 auf, der sich von einer Einströmöffnung 70A bis zu einer Ausströmöffnung 70B erstreckt. In diesem Drosselkanal 70 ist wiederum ein Drosselkörper 72 vorgesehen, welcher wie in den Fig. 8A bis 8C ersichtlich, der mittels Gleithülsen gegenüber dem Gehäuse 20 und der Außenwandung 71 verlagerbar ist. Wie sich aus der Darstellung der Fig. 7 ersehen lässt, ist an der Innenseite deraußenwandung 71 eine Konusfläche 71D vorgesehen, die im Bereich dreier Aussparungen 71E unterbrochen ist.In the embodiment according to Figures 6 to 8C the throttle device 34 likewise has a throttle channel 70 which extends from an inflow opening 70A to an outflow opening 70B. In this throttle channel 70, a throttle body 72 is again provided, which as in the Figures 8A to 8C can be seen, which can be displaced relative to the housing 20 and the outer wall 71 by means of sliding sleeves. As can be seen from the representation of the Fig. 7 As can be seen, a conical surface 71D is provided on the inside of the outer wall 71, which is interrupted in the area of three recesses 71E.

Der entsprechend ebenfalls teilweise konisch geformte Drosselkörper 72 ist wie beim Ausführungsbeispiel der Fig. 4 und 5 durch eine Federeinrichtung74, in diesem Fall vorzugsweise als metallische Schraubenfeder ausgebildet, in Richtung seiner Freigabestellung, dargestellt in Fig. 8A, kraftbeaufschlagt.The throttle body 72, which is likewise partially conical in shape, is, as in the exemplary embodiment, in FIG Fig. 4 and 5 by a spring device 74, in this case preferably designed as a metallic helical spring, in the direction of its release position, shown in FIG Figure 8A , subjected to force.

Bei einem Austrag wird, wie in Fig. 8B dargestellt ist, der Drosselkörper 72 im Bereich seiner Stirnseite 72A kraftbeaufschlagt und dadurch in die Stellung der Fig. 8B gedrückt, in der die konusabschnittsförmigen Teilflächen der Außenwandung 71 und des Drosselkörpers 72 aneinander anliegen. Ein Flüssigkeitsstrom kann beim Austragdaher nur noch durch die in Fig. 7 dargestellten Durchbrechungen 71E erfolgen. In Fig. 8B wird dies durch die gepunktete Linie verdeutlicht. Der Flüssigkeitsstrom ist dadurch stark gedrosselt und somit für die Tropfenabgabe geeignet.As in Figure 8B is shown, the throttle body 72 is acted upon by force in the region of its end face 72A and thereby into the position of Figure 8B pressed, in which the conical section-shaped partial surfaces of the outer wall 71 and the throttle body 72 abut one another. A liquid flow can therefore only flow through the in Fig. 7 breakthroughs 71E shown. In Figure 8B this is illustrated by the dotted line. As a result, the flow of liquid is greatly restricted and is therefore suitable for dispensing drops.

Nach Ende des Austragvorgangs wird, noch bevor der Spender wieder in seine aufrechte Stellung gebracht wird, der Drosselkörper 72 durch die Federeinrichtung 74 zurück in seine Position der Fig. 8A und 8C gedrückt, so dass, wie die durch die gepunkteten Linien dargestellt ist, die Flüssigkeit aus dem Auslasskanal bei nur geringem Strömungswiderstand zurück in den Flüssigkeitsspeicher gesogen werden kann.After the end of the discharge process, before the dispenser is returned to its upright position, the throttle body 72 is returned to its position by the spring device 74 Figures 8A and 8C pressed so that, as shown by the dotted lines, the liquid can be sucked from the outlet channel back into the liquid reservoir with only little flow resistance.

Claims (11)

  1. Discharge head (10) for a liquid dispenser (100), with the following features:
    a. the discharge head (10) has a housing (20), and
    b. the discharge head (10) has a coupling device (24) for attachment to a liquid store (90), and
    c. the discharge head (10) has a discharge opening (38) through which liquid is able to be dispensed into a surrounding atmosphere, and
    d. the discharge head (10) has an outlet channel (30) which extends from an inlet region (32), pointing in the direction of the liquid store (90), up to the discharge opening (38) and by means of which the discharge opening (38) is able to be supplied with liquid, and
    e. the discharge head (10) has, in the outlet channel (30), a throttle device (34) with a throttle channel (50; 60; 70) for the reduction in the liquid pressure and/or the liquid flow of the liquid flowing through the throttle device (34), characterized by the following feature:
    f. the throttle device (34) is designed in the form of a switchable throttle device (34) in which, between a throttling state and a release state, a minimum free cross section of the throttle channel (50; 60; 70) is able to be varied such that liquid flowing out in the direction of the discharge opening (38) is subjected to a relatively high throttling effect by way of the throttling state of the throttle channel (50; 60; 70) and that the liquid flowing back in in the direction of the inlet region (32) is subjected to a relatively low throttling effect by way of the release state.
  2. Discharge head (10) according to Claim 1, with the following additional feature:
    a. the throttle device (34) has a throttle body (52; 62; 72) which is able to be displaced between a release position and a throttling position in the throttle channel (50; 60; 70).
  3. Discharge head (10) according to Claim 2, with the following additional feature:
    a. with respect to an upright position of the discharge head (10), the throttle body (52) is arranged at different heights in its release position and in its throttling position, and
    b. the throttle body (52) is able to be moved freely between the release position and the throttling position such that, in an upright position on the one hand and in an opposite, upside-down position on the other hand, it assumes, in one case, the release position under the action of gravitational force and, in the other case, the throttling position under the action of gravitational force.
  4. Discharge head (10) according to either of Claims 2 and 3, with the following additional feature:
    a. the throttle body (52; 62, 72) is arranged in the throttle channel (50; 60; 70) such that said body is displaced in the direction of its throttling position by the liquid flowing out through the throttle device (34) and/or that said body is displaced in the direction of its release position by the liquid flowing in through the throttle device.
  5. Discharge head according to one of Claims 2 to 4, with the following additional features:
    a. the throttle channel (50) has, at its ends, an inflow opening (50A) and an outflow opening (50B), wherein the throttle body (52) is arranged between the inflow opening (50A) and the outflow opening (50B) both in a release position and in its throttling position, and
    b. the throttle channel (50) has at least one side opening (50C), wherein the throttle body (52), when arranged in the throttling position, is arranged between the side opening (50C) and the outflow opening (50B), and wherein the throttling body (52), when arranged in the release position, is not arranged between the side opening (50C) and the outflow opening (50B).
  6. Discharge head (10) according to one of Claims 2 to 5, with the following additional feature:
    a. the throttle device (34) has an elastically deflectable spring device (64; 74), by means of which the throttle body (62; 72) is subjected to force in the direction of its release position or in the direction of its throttling position,
    preferably with at least one of the following additional features:
    b. the spring device (64; 74) is designed in the form of a plastic spring, preferably in the form of a helical spring composed of plastic, and/or
    c. the spring device (64) is formed integrally with the throttle body (62).
  7. Discharge head (10) according to one of Claims 2 to 6, with the following additional feature:
    a. the throttle channel (50; 60; 70) is outwardly delimited by an outer wall (51; 61; 71), and
    b. the throttle body (52; 62; 72) is arranged within the throttle channel (50; 60; 70), and
    c. the throttle body (52; 62; 72) and the outer wall (51; 61; 71) of the throttle channel (50; 60; 70) have corresponding stop surfaces (51B; 61B, 71B), by which the throttle body is secured in the throttle channel (50; 60; 70).
  8. Discharge head according to one of the preceding claims, with at least one of the following features:
    a. the throttle body (52) is spherical, and/or
    b. the outer wall (51; 61) of the throttle channel (50; 60) has a plurality of deflectable outer wall webs (51A, 61A) extending in a longitudinal direction of the throttle channel, at the end of which webs the stop surfaces (51B, 61B) for the throttle body (52; 62) are provided.
  9. Discharge head (10) according to one of the preceding claims, with the following additional feature:
    a. the discharge head (10) has, in the outlet channel (30) downstream of the throttle device (34), an outlet valve (36) which opens in dependence on the positive pressure prevailing upstream,
    wherein the outlet valve (36) preferably has at least one of the following features:
    b. the outlet valve (36) closes automatically in a pressure interval between a defined inlet-side negative pressure and an inlet-side positive pressure and opens when the defined negative pressure is exceeded and when the defined positive pressure is exceeded, and/or
    c. the outlet valve (36) is formed from an elastic material and has a bulge which is directed upstream and in which a valve opening, which is able to be closed by valve lips, is provided such that, with increasing inlet-side positive pressure, the valve lips are increasingly pressed against one another up to the attainment of an inlet-side limit positive pressure for positive pressure.
  10. Liquid dispenser (100) for dispensing liquid, in particular for dispensing cosmetic or pharmaceutical liquids, with the following features:
    a. the liquid dispenser (100) has a discharge head (10) with a discharge opening (38) for dispensing of liquid into a surrounding atmosphere, and
    b. the liquid dispenser (100) has a liquid store (90), which is connected to a housing (20) of the discharge head (10) by way of a detachable coupling device (24) or an integral formation,
    characterized by the feature:
    c. the discharge head (10) is designed according to one of the preceding claims.
  11. Liquid dispenser (100) according to Claim 10, with at least one of the following additional features:
    a. the liquid dispenser (100) is designed in the form of a drop dispenser, and/or
    b. the liquid store (90) is designed in the form of a squeeze bottle or tube, and/or
    c. an inner volume of the liquid store (90) is less than 300 ml, preferably less than 100 ml, in particular preferably less than 50 ml, and/or
    d. the liquid store (90) is filled with a cosmetic or pharmaceutical liquid.
EP17803841.0A 2016-11-17 2017-11-10 Discharge head for a liquid dispenser and liquid dispenser having such a discharge head Active EP3541719B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016222682.7A DE102016222682B3 (en) 2016-11-17 2016-11-17 Discharge head for a liquid dispenser and liquid dispenser with such a discharge head
PCT/EP2017/078938 WO2018091377A1 (en) 2016-11-17 2017-11-10 Discharge head for a liquid dispenser and liquid dispenser having such a discharge head

Publications (2)

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EP3541719A1 EP3541719A1 (en) 2019-09-25
EP3541719B1 true EP3541719B1 (en) 2020-12-30

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US (1) US11077993B2 (en)
EP (1) EP3541719B1 (en)
KR (1) KR102502821B1 (en)
CN (1) CN109963791B (en)
DE (1) DE102016222682B3 (en)
WO (1) WO2018091377A1 (en)

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KR102502821B1 (en) 2023-02-22
US11077993B2 (en) 2021-08-03
CN109963791B (en) 2021-03-09
DE102016222682B3 (en) 2017-10-05
EP3541719A1 (en) 2019-09-25
WO2018091377A1 (en) 2018-05-24
US20200055643A1 (en) 2020-02-20
CN109963791A (en) 2019-07-02
KR20190084958A (en) 2019-07-17

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