EP1202816B1 - Dispenser for liquids or for viscous or sprayable products - Google Patents

Dispenser for liquids or for viscous or sprayable products Download PDF

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Publication number
EP1202816B1
EP1202816B1 EP00960446A EP00960446A EP1202816B1 EP 1202816 B1 EP1202816 B1 EP 1202816B1 EP 00960446 A EP00960446 A EP 00960446A EP 00960446 A EP00960446 A EP 00960446A EP 1202816 B1 EP1202816 B1 EP 1202816B1
Authority
EP
European Patent Office
Prior art keywords
dispenser according
suction
storage container
piston
cylinder
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.)
Expired - Lifetime
Application number
EP00960446A
Other languages
German (de)
French (fr)
Other versions
EP1202816A1 (en
Inventor
J. W. M. Mijers
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
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Publication of EP1202816A1 publication Critical patent/EP1202816A1/en
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Publication of EP1202816B1 publication Critical patent/EP1202816B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1064—Pump inlet and outlet valve elements integrally formed of a deformable material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers

Definitions

  • the description relates to a dispenser for liquids, according to the preamble of claim 1.
  • Such dispensers are used in everyday use e.g. as Soap dispenser, lotion or cream dispenser, gel, liquid Detergents, but also in the pharmaceutical industry as atomizers needed for medication. While it is everyday Liquids not so much due to peculiarities of chemical Behavior arrives, this question is with medication from significant importance. That in drug spray containers Components used are pump systems with one each Unit consisting of connector, sealing housing, piston with one Compression spring and with a ball. Because the balls and the compression springs made of steel or stainless steel for functional reasons alone can be made between the drug liquid and steel as a chemical material within a short time Reactions take place that the drug in its basic substance change so that such a pumping system for medication is not permitted.
  • the dispenser has a metering device which is controlled by a a cylinder housing reciprocable suction or pressure piston is formed. There is a valve between the suction and pressure side intended.
  • a cylinder housing takes the at one end Piston metering device on and on the other end is on a valve seat a membrane disc held on its circumference for the blocking or the opening of the flow in or out of the reservoir intended.
  • the invention has for its object one for liquids different consistency to create suitable donors who Touching the liquid with metal parts prevents bacteria from entering avoids the air.
  • the object is achieved by the donor according to claim 1.
  • the Dispenser has an exchangeable storage container 7, the via a valve in the liquid path to a metering device 10 can be connected.
  • a cylinder housing 3 is a Piston 1, as a suction or pressure piston, can be moved back and forth.
  • the cylinder housing 3 takes the piston 1 with it at one end 3a a compression spring 2 arranged in a cavity 1b and at its other end 3b is a valve seat 5 with a Circumference 4a clamped membrane disc 4 for locking or the opening of the flow is provided.
  • the diaphragm disk 4 has a cylinder housing 3 are central connection opening 4b and the valve seat 5 Passage openings 5a in the direction of the storage container 7 intended.
  • the membrane disc 4 is on an outer edge clamped between the valve seat and the cylinder housing, wherein passages 3n in the cylinder housing 3 extending transversely are provided.
  • the membrane disc 4 is also against a concentric outer ring web 3c of the cylinder housing depending on pressure.
  • the membrane disc 4 is on an annular sealing seat 5c around the central connection opening 4b spaced around depending on the pressure.
  • the membrane disc 4 stands with the cylinder room 3d and an upper room 3e above the membrane disc 4 with a suction or ejection opening 3f for the metering device 10 in connection. there is the membrane disc 4 with its connecting opening 4b a suction or discharge opening 3f of the cylinder housing 3 across from.
  • the metering device 10 can also be used as a spray nozzle be trained. Is the dosing device 10 by locking fixed in the cylinder housing 3, depending on the application differently designed dosing devices be used.
  • valve seat 5 is fastened in such a simple manner that that the valve seat 5 on the side to the reservoir 7 a sealing locking connection 3g forms.
  • the storage container 7 is made of a transparent glass cylinder 7a manufactured.
  • the glass can also be colored.
  • the cylinder housing 3 is one formed the lid engaging behind the cylinder edge, whereby a pressure piece 6 between the cylinder edge and this cover a glass ring is inserted to provide a tolerated voltage produce.
  • a sealing clamping base 9 made of flexible material (plastic) placed at the bottom there is an axially open glass cylinder 7a .
  • this part can be produced by injection molding become. It can consist of one or two material components consist. At least the one that takes over the function of the spring Area 21a is preferably made of thermoplastic Plastic with a Shore hardness of 70 ° -90 ° A. The piston region 21b can also be made of stiffer plastic be trained.
  • the one-piece design of part 21 reduces the number of required components and simplifies the final assembly.
  • the Recognizable donor 3 is in the reservoir 7 by suction the piston 1 adjustable, flying piston 8 sliding stored.
  • the flying piston 8 has a flat end face 8b.
  • the cylinder housing 3 (Fig. 1 and 3) has a hollow Guide shaft for an internal guidance of the sprung suction or pressure piston 1 and for external guidance of the sleeve-shaped trained suction and pressure pistons 1.
  • the steel compression spring 2 is arranged in the cavity 1b.
  • axially parallel ventilation channels 1d are incorporated in the outer sleeve wall 1c of the suction or pressure piston 1 .
  • valve seat 5 is concentric with Locking connection 3g in a holder 5d for a suction pipe 12 about.
  • the cylinder housing 3 can be of an alternative design (Fig. 4) be angular, from the upper room 3e the suction or discharge opening 3f as an angular one Channel 3k is continued.
  • the valve seat 5 is the reservoir 7 hollow and forms together with the locking connection 3g a ring heel 5e, which corresponds to a shaped annular space 8a of the flying piston 8 movable into it is.
  • an inner tube 13 is connected via a connecting channel 3m, said inner tube 13 running coaxially with the axis of the storage container 7.
  • the inner tube 13, which is connected to the metering device 10 with a filler 11, is surrounded by a protective tube 14.
  • the inner tube 13 with the metering device 10 and the protective tube 14 are provided with a removable protective cap 15.
  • a standardization can be achieved in that a functional unit is formed from the membrane 4 and valve seat 5 and a cap 22, which functions as a two-way valve and can be used in a variety of dispenser pumps of different sizes. Such a functional unit is shown in Fig. 1b.
  • the membrane can have an inner region 4e of lower Shore hardness (for example approximately 55 ° A) and an outer region 4f of greater Shore hardness (for example approximately 80 ° A).
  • the area ratio between the effective areas and the ratio of the membrane hardness influence the switching points of the valve. With the valve geometry remaining the same, they can therefore be adapted to different working points by using appropriate membranes.
  • the alternative dispenser is in perspective and shown in its natural size.
  • For the Ergonomic pressing sucing or pumping is one of the fingers adapted printing area 1a formed.
  • a needle holder bushing 16 fixed in the cylinder housing 3 and in the needle holder bush 16 is a hollow technique needle 17, the channel 17a with the passage openings 5a communicates as soon as one sealing wall of a second piston 18 is pierced.
  • valve seat 5 it is also possible to use the storage container 7 facing end of the valve seat 5 as a Luer lock connection train.
  • the valve seat 5 is preferred the female part of the Luer lock connector. It will possible while maintaining hygiene and sterility conditions, the storage container only immediately before use to connect the dispenser and its valve seat 5.
  • the needle holder bush 16 After piercing the wall of the two-piston 18 is located the needle holder bush 16 due to a recessed Inner contour 18a with the outer contour of the needle holder bushing 16 in contact with the locking connection 3g and the ring shoulder 5e of the valve seat 5.
  • the second piston 18 is through the suction stroke with the lifting height "h” (see FIG. 3) with a through the cylinder inner diameter "D” pulled up.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Disclosed is a dispenser for liquids or for viscous or sprayable products to which a disposable container is tightly attached and to which a dosage device is attachable. The inventive dispenser is provided with a cylinder-housing (3), suction or compression cylinders which can be moved back and forth (1) and a valve between the suction and pressure cylinders. For the purpose of producing a dispenser suitable for liquids of differing consistencies which avoids contact between the liquid and metal parts and the invasion of bacteria in the air, the invention proposes that the cylinder housing at one end accommodates the cylinder (1) which has a pressure spring (2) located in a recess and that at the other end a valve seat (5) is provided with a membrane disk (4) which is stretched at the periphery thereof in order to close off the container or open the through-flow from said container.

Description

Die Beschreibung betrifft einen Spender für Flüssigkeiten, gemäß dem Oberbegriff des Anspruchs 1.The description relates to a dispenser for liquids, according to the preamble of claim 1.

Derartige Spender werden im alltäglichen Gebrauch z.B. als Seifenspender, Lotion- oder Cremespender, Gels, flüssige Reinigungsmittel, aber auch in der Pharmazie als Zerstäuber für Medikamente benötigt. Währenddem es bei alltäglichen Flüssigkeiten nicht so sehr auf Besonderheiten der chemischen Verhaltensweise ankommt, ist diese Frage bei Medikamenten von erheblicher Bedeutung. Die in Medikament-Sprühbehältern eingesetzten Bauteile sind Pumpsysteme mit jeweils einer Einheit aus Anschlußstück, Dichtgehäuse, Kolben mit einer Druckfeder und mit einer Kugel. Da die Kugeln und die Druckfedern schon aus Funktionsgründen aus Stahl oder Edelstahl gefertigt sind, können zwischen der Medikamentflüssigkeit und dem Werkstoff Stahl schon innerhalb kurzer Zeit chemische Reaktionen stattfinden, die das Medikament in seiner Grundsubstanz verändern, so daß ein solches Pumpsystem für Medikamente nicht gestattet wird. Such dispensers are used in everyday use e.g. as Soap dispenser, lotion or cream dispenser, gel, liquid Detergents, but also in the pharmaceutical industry as atomizers needed for medication. While it is everyday Liquids not so much due to peculiarities of chemical Behavior arrives, this question is with medication from significant importance. That in drug spray containers Components used are pump systems with one each Unit consisting of connector, sealing housing, piston with one Compression spring and with a ball. Because the balls and the compression springs made of steel or stainless steel for functional reasons alone can be made between the drug liquid and steel as a chemical material within a short time Reactions take place that the drug in its basic substance change so that such a pumping system for medication is not permitted.

Die medikamentöse Behandlung durch Sprühen von feinsten Tröpfchen in die Nase ist seit einigen Jahren stark angestiegen. Dabei werden an solche Systeme drei Grundforderungen gestellt: Zuverlässigkeit, Sicherheit und Wirksamkeit. Diese Bedingungen werden von Nasentropfen weder bei Kindern noch bei Erwachsenen erfüllt. Eine der Voraussetzungen ist, daß die Flüssigkeit durch ein Ventil von der Umwelt abgeschlossen wird, um den Zutritt von Sauerstoff, Bazillen und Bakterien zu verhindern. Bekannte Systeme bestehen demzufolge aus einem Anschluß an eine Sprühvorrichtung, einem abgedichteten Gehäuse, einem Kolben, einer Meßkammer, einer darin angeordneten Feder, dem Zylinder für den Kolben und einer Kugel als Ventil. Dabei kommt das Medikament mit der Stahlkugel und der Druckfeder in Berührung, wodurch ein Nachteil solche Systeme entsteht.Drug treatment by spraying the finest droplets in the nose has risen sharply for several years. Doing so such systems have three basic requirements: reliability, Security and effectiveness. These conditions are caused by nose drops fulfilled neither in children nor in adults. One of the The prerequisite is that the liquid through a valve from the Environment is closed to the entry of oxygen, bacilli and prevent bacteria. Known systems therefore consist of a connection to a spray device, a sealed housing, a piston, a measuring chamber, a spring arranged therein, the Cylinder for the piston and a ball as a valve. Here it comes Drug in contact with the steel ball and the compression spring, which creates a disadvantage of such systems.

Aus der US 4,396,132 geht ein Spender für Flüssigkeiten hervor, der an einen Vorratsbehälter auswechselbar und dicht ansetzbar ist. Der Spender weist dabei eine Dosiervorrichtung auf, die durch einen in einem Zylindergehäuse hin- und herbewegbaren Saug- bzw. Druckkolben gebildet wird. Dabei ist ein Ventil zwischen der Saug- und Druckseite vorgesehen. Dabei nimmt ein Zylindergehäuse an einem Ende den Kolben Dosiervorrichtung auf und am anderen Ende ist an einem Ventilsitz eine an ihrem Umfang gehaltene Membranscheibe für die Sperrung oder die Öffnung des Durchflusses in dem oder aus dem Vorratsbehälter vorgesehen.From US 4,396,132 a dispenser for liquids emerges, the is exchangeable and tightly attachable to a storage container. The The dispenser has a metering device which is controlled by a a cylinder housing reciprocable suction or pressure piston is formed. There is a valve between the suction and pressure side intended. A cylinder housing takes the at one end Piston metering device on and on the other end is on a valve seat a membrane disc held on its circumference for the blocking or the opening of the flow in or out of the reservoir intended.

Darüber hinaus ist es aus der US 4,227,628 bekannt, bei einem Dosierspender eine Feder so anzuordnen, dass sie außerhalb der Pumpenkammer des Spenders liegt und daher nicht in Kontakt mit dem geforderten Medium gerät. Die US 5,848,881 beschreibt einen Dosierspender, bei dem eine Membran dazu dient, die Dosierung des auszutragenden Mediums vorzunehmen.In addition, it is known from US 4,227,628 for a dispenser arrange a spring so that it is outside the pump chamber of the donor and therefore not in contact with the requested Medium device. US 5,848,881 describes a dispenser, in which a membrane serves to meter the amount to be discharged Medium.

Der Erfindung liegt die Aufgabe zugrunde, einen für Flüssigkeiten unterschiedlicher Konsistenz geeigneten Spender zu schaffen, der die Berührung der Flüssigkeit mit Metallteilen den Zutritt von Bakterien der Luft vermeidet.The invention has for its object one for liquids different consistency to create suitable donors who Touching the liquid with metal parts prevents bacteria from entering avoids the air.

Die gestellte Aufgabe wird durch den Spender gemäß dem Anspruch 1 gelöst. The object is achieved by the donor according to claim 1.

Vorteilhafte Weiterbildungen der Erfindung gehen aus den Unteransprüchen hervor.Advantageous developments of the invention emerge from the subclaims out.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt und werden nachfolgend näher beschrieben.Exemplary embodiments of the invention are shown in the drawing are shown and are described in more detail below.

Es zeigen:

Fig. 1
einen senkrechten Schnitt durch den oberen Bereich des Spenders,
Fig. 1a
einen senkrechten Schnitt durch eine zweite Ausführungsform des Spenders,
Fig. 1b
eine aus Ventilsitz und Membran gebildete Funktionseinheit,
Fig. 2
eine perspektivische Außenansicht des Spenders gemäß Fig. 1,
Fig. 3
eine alternative Ausführungsform des Spenders mit abgewandeltem Ventil und Vorratsbehälter im Schnitt,
Fig. 4
eine weitere Alternative eines winkelförmigen Spenders im Schnitt,
Fig. 5
eine perspektivische Außenansicht des Spenders gemäß Fig. 4,
Fig. 6
eine Ansicht des Spenders im Maßstab 1:1 und
Fig. 7
einen Schnitt durch eine weitere alternative Ausführungsform des Spenders.
Show it:
Fig. 1
a vertical section through the upper area of the dispenser,
Fig. 1a
a vertical section through a second embodiment of the dispenser,
Fig. 1b
a functional unit made up of valve seat and membrane,
Fig. 2
2 shows a perspective external view of the dispenser according to FIG. 1,
Fig. 3
an alternative embodiment of the dispenser with a modified valve and storage container in section,
Fig. 4
another alternative of an angular donor in section,
Fig. 5
3 shows a perspective external view of the dispenser according to FIG. 4,
Fig. 6
a view of the dispenser on a scale of 1: 1 and
Fig. 7
a section through a further alternative embodiment of the dispenser.

Der Spender gemäß Fig. 1 ist für Flüssigkeiten unterschiedlicher Konsistenz, Viskosität und chemischer Analyse bestimmt, wie z.B. für zähflüssige oder versprühbare Produkte, insbesondere auch Medikamente, z.B. für eine nasale Anwendung. Der Spender weist einen auswechselbaren Vorratsbehälter 7 auf, der über ein Ventil im Flüssigkeitsweg an eine Dosiervorrichtung 10 anschließbar ist. In einem Zylindergehäuse 3 ist ein Kolben 1, als Saug- bzw. Druckkolben, hin und her bewegbar. Das Zylindergehäuse 3 nimmt an einem Ende 3a den Kolben 1 mit einer in einem Hohlraum 1b angeordneten Druckfeder 2 auf und an seinem anderen Ende 3b ist ein Ventilsitz 5 mit einer am Umfang 4a eingespannten Membranscheibe 4 für die Sperrung oder die Öffnung des Durchflusses vorgesehen. 1 is different for liquids Determines consistency, viscosity and chemical analysis, such as. for viscous or sprayable products, in particular also medication, e.g. for a nasal application. The Dispenser has an exchangeable storage container 7, the via a valve in the liquid path to a metering device 10 can be connected. In a cylinder housing 3 is a Piston 1, as a suction or pressure piston, can be moved back and forth. The cylinder housing 3 takes the piston 1 with it at one end 3a a compression spring 2 arranged in a cavity 1b and at its other end 3b is a valve seat 5 with a Circumference 4a clamped membrane disc 4 for locking or the opening of the flow is provided.

Die Membranscheibe 4 besitzt eine zum Zylindergehäuse 3 zentrische Verbindungsöffnung 4b und dem Ventilsitz 5 sind Durchlaßöffnungen 5a in Richtung des Vorratsbehälters 7 vorgesehen. Die Membranscheibe 4 ist auf einem äußeren Rand zwischen dem Ventilsitz und dem Zylindergehäuse festgeklemmt, wobei Durchlaßkanäle 3n in dem Zylindergehäuse 3 quer verlaufend vorgesehen sind. Die Membranscheibe 4 liegt ferner gegen einen konzentrischen äußeren Ringsteg 3c des Zylindergehäuses druckabhängig an. Außerdem liegt die Membranscheibe 4 auf einem ringförmigen Dichtsitz 5c um die zentrische Verbindungsöffnung 4b herum beabstandet druckabhängig auf. Die Membranscheibe 4 steht mit dem Zylinderraum 3d und einem oberen Raum 3e über der Membranscheibe 4 mit einer Ansaug- bzw. Ausdrücköffnung 3f für die Dosiervorrichtung 10 in Verbindung. Dabei liegt die Membranscheibe 4 mit ihrer Verbindungsöffnung 4b einer Ansaug- bzw. Ausdrücköffnung 3f des Zylindergehäuses 3 gegenüber.The diaphragm disk 4 has a cylinder housing 3 are central connection opening 4b and the valve seat 5 Passage openings 5a in the direction of the storage container 7 intended. The membrane disc 4 is on an outer edge clamped between the valve seat and the cylinder housing, wherein passages 3n in the cylinder housing 3 extending transversely are provided. The membrane disc 4 is also against a concentric outer ring web 3c of the cylinder housing depending on pressure. In addition, the membrane disc 4 is on an annular sealing seat 5c around the central connection opening 4b spaced around depending on the pressure. The membrane disc 4 stands with the cylinder room 3d and an upper room 3e above the membrane disc 4 with a suction or ejection opening 3f for the metering device 10 in connection. there is the membrane disc 4 with its connecting opening 4b a suction or discharge opening 3f of the cylinder housing 3 across from.

Sobald der Kolben 1 durch die Druckfeder 2 nach oben gezogen wird, saugt der entstehende Unterdruck die Membranscheibe 4 vom ringförmigen Dichtsitz 5c weg. Dadurch wird aus dem Vorratsbehälter 7 die Flüssigkeit durch die Durchlaßöffnungen 5a und die Verbindungsöffnung 4b in der Membranscheibe 4 und durch die Ansaugöffnung 3f in den Zylinderraum 3d gefördert. Beim Druckhub des Kolbens 1 schließt die Membranscheibe 4 auf dem ringförmige Dichtsitz 5c ab. Die im Zylinderraum 3d befindliche Flüssigkeit strömt über die Durchlaßkanäle 3n radial nach außen und öffnet die Membranscheibe 4 am Ringsteg 3c und die Flüssigkeit strömt in die Dosiervorrichtung 10. Dabei kann die Dosiervorrichtung 10 auch als Sprühdüse ausgebildet sein. Ist die Dosiervorrichtung 10 durch Verrasten im Zylindergehäuse 3 befestigt, können je nach Anwendungszweck unterschiedlich ausgebildete Dosiervorrichtungen eingesetzt werden.As soon as the piston 1 is pulled up by the compression spring 2 the resulting vacuum sucks the membrane disc 4 away from the annular sealing seat 5c. This turns the Reservoir 7 the liquid through the passage openings 5a and the connection opening 4b in the membrane disc 4 and conveyed through the suction opening 3f into the cylinder space 3d. During the pressure stroke of the piston 1, the membrane disc 4 opens the annular sealing seat 5c. The in the cylinder room 3d located liquid flows through the passage channels 3n radially outwards and opens the membrane disc 4 on the ring land 3c and the liquid flows into the metering device 10. The metering device 10 can also be used as a spray nozzle be trained. Is the dosing device 10 by locking fixed in the cylinder housing 3, depending on the application differently designed dosing devices be used.

Die Befestigung des Ventilsitzes 5 erfolgt derart einfach, daß der Ventilsitz 5 an der Seite zum Vorratsbehälter 7 einen dichtenden Rastanschluß 3g bildet.The valve seat 5 is fastened in such a simple manner that that the valve seat 5 on the side to the reservoir 7 a sealing locking connection 3g forms.

Der Vorratsbehälter 7 ist aus einem transparenten Glaszylinder 7a gefertigt. Das Glas kann auch gefärbt sein. Für den Fall, daß der Glaszylinder 7a nur aus einem beidseitig offenen Zylinder besteht, ist das Zylindergehäuse 3 zu einem den Zylinderrand hintergreifenden Deckel geformt, wobei zwischen Zylinderrand und diesem Deckel ein Druckstück 6 aus einem Glasring eingefügt wird, um eine tolerierte Spannung zu erzeugen. Am Boden ist ein axial offener Glaszylinder 7a mit einem dichtenden Klemmboden 9 aus flexiblem Werkstoff (Kunststoff) aufgesetzt.The storage container 7 is made of a transparent glass cylinder 7a manufactured. The glass can also be colored. For the Case that the glass cylinder 7a only from one side there is an open cylinder, the cylinder housing 3 is one formed the lid engaging behind the cylinder edge, whereby a pressure piece 6 between the cylinder edge and this cover a glass ring is inserted to provide a tolerated voltage produce. At the bottom there is an axially open glass cylinder 7a a sealing clamping base 9 made of flexible material (plastic) placed.

Die Fig. 1a zeigt dabei eine gegenüber der Ausführungsform der Fig. 1 dahingehend geänderte Ausführungsform, daß der Kolben 1 und die Feder 2 als einstückiges Teil 21 ausgebildet sind. Insbesondere kann dieses Teil durch Spritzguss hergestellt werden. Es kann aus einer oder aus zwei Materialkomponenten bestehen. Zumindest der die Funktion der Feder übernehmende Bereich 21a ist vorzugsweise aus thermoplastischem Kunststoff mit einer Shore-Härte von 70°-90°A hergestellt. Der Kolbenbereich 21b kann auch aus steiferem Kunststoff ausgebildet sein. Die einstückige Ausbildung des Teils 21 reduziert die Anzahl erforderlicher Bauteile und vereinfacht die Endmontage.1a shows one compared to the embodiment 1 modified embodiment in that the Piston 1 and the spring 2 formed as a one-piece part 21 are. In particular, this part can be produced by injection molding become. It can consist of one or two material components consist. At least the one that takes over the function of the spring Area 21a is preferably made of thermoplastic Plastic with a Shore hardness of 70 ° -90 ° A. The piston region 21b can also be made of stiffer plastic be trained. The one-piece design of part 21 reduces the number of required components and simplifies the final assembly.

Gemäß Fig. 2 sind die Größen-Verhältnisse und die Formen des Spenders erkennbar. Gemäß Fig. 3 ist in dem Vorratsbehälter 7 ein durch Saugkraft des Kolbens 1 verstellbarer, fliegender Kolben 8 gleitend gelagert. Der fliegende Kolben 8 weist eine ebene Stirnfläche 8b auf.2 are the size ratios and the shapes of the Recognizable donor. 3 is in the reservoir 7 by suction the piston 1 adjustable, flying piston 8 sliding stored. The flying piston 8 has a flat end face 8b.

Das Zylindergehäuse 3 (Fig. 1 und 3) besitzt einen hohlen Führungsschaft für eine innere Führung des gefederten Saug- bzw. Druckkolbens 1 und für eine äußere Führung des hülsenförmig ausgebildeten Saug- und Druckkolbens 1. In dem Hohlraum 1b ist die aus Stahl bestehende Druckfeder 2 angeordnet. In der äußeren Hülsenwandung 1c des Saug- bzw. Druckkolbens 1 sind axial parallel verlaufende Entlüftungskanäle 1d eingearbeitet.The cylinder housing 3 (Fig. 1 and 3) has a hollow Guide shaft for an internal guidance of the sprung suction or pressure piston 1 and for external guidance of the sleeve-shaped trained suction and pressure pistons 1. In the cavity 1b, the steel compression spring 2 is arranged. In the outer sleeve wall 1c of the suction or pressure piston 1 axially parallel ventilation channels 1d are incorporated.

Gemäß Fig. 1 geht der Ventilsitz 5 konzentrisch zum Rastanschluß 3g in eine Halterung 5d für ein Saugrohr 12 über.1, the valve seat 5 is concentric with Locking connection 3g in a holder 5d for a suction pipe 12 about.

Das Zylindergehäuse 3 kann nach einer alternativen Bauweise (Fig. 4) winkelförmig ausgebildet sein, wobei vom oberen Raum 3e die Ansaug- bzw. Ausdrücköffnung 3f als winkelförmiger Kanal 3k weitergeführt ist. Der Ventilsitz 5 ist zum Vorratsbehälter 7 hin hohl und bildet zusammen mit dem Rastanschluß 3g einen Ringabsatz 5e, der in einen korrespondierend geformten Ringraum 8a des fliegenden Kolbens 8 hinein bewegbar ist.The cylinder housing 3 can be of an alternative design (Fig. 4) be angular, from the upper room 3e the suction or discharge opening 3f as an angular one Channel 3k is continued. The valve seat 5 is the reservoir 7 hollow and forms together with the locking connection 3g a ring heel 5e, which corresponds to a shaped annular space 8a of the flying piston 8 movable into it is.

Bei einem winkelförmig zur Achse des Vorratsbehälters 7 angeordneten Zylindergehäuse 3 ist über einen Verbindungskanal 3m ein Innenrohr 13, das achsgleich mit der Achse des Vorratsbehälters 7 verläuft, angeschlossen. Dabei ist das Innenrohr 13, das an die Dosiervorrichtung 10 mit einem Füllstück 11 angeschlossen ist, von einem Schutzrohr 14 umgeben. Das Innenrohr 13 mit der Dosiervorrichtung 10 und das Schutzrohr 14 sind mit einer abnehmbaren Schutzkappe 15 versehen.
Eine Standartisierung kann dabei dadurch erreicht werden, daß aus Membran 4 und Ventilsitz 5 sowie einer Kappe 22 eine Funktionseinheit gebildet wird, die als Zweiwegeventil wirkt und in eine Vielzahl auch unterschiedlich großer Spenderpumpen einsetzbar ist. Eine solche Funktionseinheit ist in Fig. 1b dargestellt. Die Membran kann hierzu einen inneren Bereich 4e geringerer Shore-Härte (z.B. ca. 55°A) und eine äußeren Bereich 4f größerer Shore-Härte (z.B. ca. 80°A) aufweisen. Dabei beeinflußt das Flächenverhältnis zwischen den wirkenden Flächen sowie das Verhältnis der Membranhärte die Schaltpunkte des Ventils. Diese können daher bei gleichbleibender Ventilgeometrie durch Verwendung entsprechender Membranen an unterschiedliche Arbeitspunkte angepaßt werden.In the case of a cylinder housing 3 which is arranged at an angle to the axis of the storage container 7, an inner tube 13 is connected via a connecting channel 3m, said inner tube 13 running coaxially with the axis of the storage container 7. The inner tube 13, which is connected to the metering device 10 with a filler 11, is surrounded by a protective tube 14. The inner tube 13 with the metering device 10 and the protective tube 14 are provided with a removable protective cap 15.
A standardization can be achieved in that a functional unit is formed from the membrane 4 and valve seat 5 and a cap 22, which functions as a two-way valve and can be used in a variety of dispenser pumps of different sizes. Such a functional unit is shown in Fig. 1b. For this purpose, the membrane can have an inner region 4e of lower Shore hardness (for example approximately 55 ° A) and an outer region 4f of greater Shore hardness (for example approximately 80 ° A). The area ratio between the effective areas and the ratio of the membrane hardness influence the switching points of the valve. With the valve geometry remaining the same, they can therefore be adapted to different working points by using appropriate membranes.

In den Fig. 5 und 6 ist der alternative Spender perspektivisch und in seiner natürlichen Größe dargestellt. Für das ergonomische Drücken (Saugen oder Pumpen) ist eine dem Finger angepaßte Druckfläche 1a gebildet.5 and 6, the alternative dispenser is in perspective and shown in its natural size. For the Ergonomic pressing (sucking or pumping) is one of the fingers adapted printing area 1a formed.

Unter dem Ventilsitz 5 (Fig. 7) ist eine Nadelhalterbuchse 16 im Zylindergehäuse 3 befestigt und in der Nadelhalterbuchse 16 befindet sich eine Hohlstechnadel 17, deren Kanal 17a mit den Durchlaßöffnungen 5a in Verbindung steht, sobald eine dichtende Wandung eines Zweitkolbens 18 durchstoßen wird.Under the valve seat 5 (FIG. 7) is a needle holder bushing 16 fixed in the cylinder housing 3 and in the needle holder bush 16 is a hollow technique needle 17, the channel 17a with the passage openings 5a communicates as soon as one sealing wall of a second piston 18 is pierced.

Alternativ hierzu ist es auch möglich, das dem Vorratsbehälter 7 zugewande Ende des Ventilsitzes 5 als Luer-Lock-Anschluß auszubilden. Dabei ist der Ventilsitz 5 vorzugsweise das weibliche Teil des Luer-Lock-Anschlusses. Dadurch wird es unter Wahrung von Hygiene- und Sterilitätsbedingungen möglich, den Vorratsbehälter erst unmittelbar vor Gebrauch mit dem Spender und seinem Ventilsitz 5 zu verbinden. Alternatively, it is also possible to use the storage container 7 facing end of the valve seat 5 as a Luer lock connection train. The valve seat 5 is preferred the female part of the Luer lock connector. It will possible while maintaining hygiene and sterility conditions, the storage container only immediately before use to connect the dispenser and its valve seat 5.

Nach dem Durchstechen der Wandung des Zweikolbens 18 befindet sich die Nadelhalterbuchse 16 aufgrund einer eingelassenen Innenkontur 18a mit der Außenkontur der Nadelhalterbuchse 16 in Berührung mit dem Rastanschluß 3g und dem Ringabsatz 5e des Ventilsitzes 5. Der Zweitkolben 18 wird durch den Saughub mit der Hubhöhe "h" (vgl. Fig. 3) bei einem durch den Zylinder-Innendurchmesser "D" nach oben gezogen. Die einzufüllende Masse der Flüssigkeit oder der zähflüssigen Flüssigkeit oder zu versprühenden oder zu zerstäubenden Flüssigkeit wird zwischen dem fliegenden Kolben 8 und dem Zweitkolben 18 im zuge der Montage eingefüllt.After piercing the wall of the two-piston 18 is located the needle holder bush 16 due to a recessed Inner contour 18a with the outer contour of the needle holder bushing 16 in contact with the locking connection 3g and the ring shoulder 5e of the valve seat 5. The second piston 18 is through the suction stroke with the lifting height "h" (see FIG. 3) with a through the cylinder inner diameter "D" pulled up. The one to fill in Mass of liquid or viscous liquid or liquid to be sprayed or atomized between the flying piston 8 and the second piston 18 in filled in the assembly.

Eine Ausnutzung der größtmöglichen Hubhöhe "h" des Kolbens 1 und eine Beseitigung von Restflüssigkeiten ergibt sich u.a. gemäß Fig. 4 durch den dortigen Kolbenfortsatz mit gestuftem Druchmesser, der bei fortschreitendem Hub in den winkelförmigen Kanal 3k eintaucht und gemäß den Fig. 1 bzw. 3, in denen der Kolbenfortsatz in die Verbindungsöffnung 4b eintaucht.Exploitation of the greatest possible lifting height "h" of the piston 1 and removal of residual liquids results, among other things. 4 by the piston extension there with stepped Diameter that as the stroke progresses in the angular Channel 3k dips and according to FIGS. 1 and 3, in which the piston extension is immersed in the connection opening 4b.

Claims (21)

  1. Dispenser for liquids, or for viscous or sprayable products, to which is sealingly interchangeably fitted a storage container (7) and which is connectable to a dosing device, having a suction or pressure piston movable backwards and forwards in a cylinder housing (3), a valve between a cylinder area (3d) in the cylinder casing (3) and the storage container (7) and on the one end (3b) of the valve is provided a valve seat (5) with a membrane disk (4) fixed to the circumference (4a) for blocking the through-flow into or out of the storage container (7), where the membrane disk (4) has a central connecting opening (4b) towards the cylinder housing (3), characterized in that at one end (3a) the cylinder housing (3) receives the piston (1) with a compression spring (2) located in a cavity (1b) outside the cylinder area (3d), the membrane disk (4) being clamped on an outer edge (4d) between the valve seat (5) and cylinder housing (3), passage ducts (3n) being provided there in the cylinder housing (3), that the membrane disk (4) engages in pressure-dependent manner against a concentric, outer ring land (3c) of the cylinder housing (3) and that the membrane disk (4) rests in spaced, pressure-dependent manner on an annular sealing seat (5c) around the central connecting opening (4b).
  2. Dispenser according to claim 1, characterized in that in the valve seat (5) are provided passage openings (5a) in storage container (7).
  3. Dispenser according to one of the claims 1 or 2, characterized in that the membrane disk (4) with the cylinder area (3d) and an upper area (3e) is connected by means of the membrane disk (4) to a suction or squeezing out opening (3f) for the dosing device (10).
  4. Dispenser according to one of the claims 1 to 3, characterized in that the membrane disk (4) with its connecting opening (4b) faces a suction or squeezing out opening (3f) of the cylinder housing (3).
  5. Dispenser according to one of the claims 1 to 4, characterized in that on the side towards the storage container (7), the valve seat (5) forms a sealing locking connection (3g).
  6. Dispenser according to one of the claims 1 to 5, characterized in that the storage container (7) comprises a transparent glass cylinder (7a).
  7. Dispenser according to one of the claims 1 to 6, characterized in that an axially open glass cylinder (7a) has a sealing clamping base (9) made from flexible material.
  8. Dispenser according to one of the claims 1 to 7, characterized in that ih the storage container (7) is provided a flying piston (8) adjustable by suction force.
  9. Dispenser according to claim 8, characterized in that the flying piston (8) has a planar end face (8b).
  10. Dispenser according to one of the claims 1 to 9, characterized in that the cylinder housing (3) has a hollow guide shaft (3h) for an inner guidance of the sprung suction/pressure piston (1) and an external guidance of the sleeve-like suction/pressure piston (1).
  11. Dispenser according to claim 10, characterized in that the compression spring (2) is placed in a cavity (1b) of the sleeve-like suction/pressure piston (1).
  12. Dispenser according to one of the claims 10 or 11, characterized in that axially directed vent ducts (1d) are provided in the outer sleeve wall (1c) of the suction/pressure piston (1).
  13. Dispenser according to one of the claims 1 to 12, characterized in that, concentrically to the locking connection (3j), the valve seat (5) passes into a mounting support (5d) for a suction tube (12).
  14. Dispenser according to one of the claims 1 to 13, characterized in that the cylinder housing (3) has an angular construction, the suction or squeezing out opening (3f) being continued on as an angular channel (3k) from the upper area (3e).
  15. Dispenser according to one of the claims 1 to 14, characterized in that the valve seat (5) directed towards the storage container (7) is hollow and together with the locking connection (3g) forms a ring step (5e), which is movable into a correspondingly shaped annular space (8a) of the flying piston (8).
  16. Dispenser according to one of the claims 1 to 15, characterized in that in the case of a cylinder housing (3) arranged in angular manner towards the axis of the storage container (7) by means of a connecting channel (3m) is connected an inner tube (13), which is equiaxial to the axis of the storage container (7).
  17. Dispenser according to one of the claims 1 to 16, characterized in that the inner tube (13), which is connected to the dosing device (10), is surrounded by a protective tube (14).
  18. Dispenser according to one of the claims 1 to 17, characterized in that the inner tube (13) with the dosing device (10) and protective tube (14) are provided with a removable protective cap (15).
  19. Dispenser according to one of the claims 1 to 18, characterized in that under the valve seat (5) is fixed in the cylinder housing (3) a needle holding bush (16) and that in said needle holding bush (16) is fixed a hollow piercing needle (17), whose channel (17a) is connected to the passage openings (5a).
  20. Dispenser according to one of the claims 1 to 19, characterized in that in the storage container (7) a second piston (18) is provided under the needle holding bush (16) and a flush-mounted inner contour (18a) corresponds to the outer contour of the needle holding bush (16), the locking connection (3g) and the ring step (5e) of the valve seat (5).
  21. Dispenser according to one of the claims 1 to 20, characterized in that the liquid mass or the viscous liquid or the liquid to be atomized and which is to be filled can be filled between the flying piston (8) and the second piston (18).
EP00960446A 1999-08-16 2000-08-12 Dispenser for liquids or for viscous or sprayable products Expired - Lifetime EP1202816B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19938798 1999-08-16
DE19938798A DE19938798A1 (en) 1999-08-16 1999-08-16 Dispenser for liquids or for viscous or sprayable products
PCT/EP2000/007882 WO2001012338A1 (en) 1999-08-16 2000-08-12 Dispenser for liquids or for viscous or sprayable products

Publications (2)

Publication Number Publication Date
EP1202816A1 EP1202816A1 (en) 2002-05-08
EP1202816B1 true EP1202816B1 (en) 2004-03-24

Family

ID=7918553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960446A Expired - Lifetime EP1202816B1 (en) 1999-08-16 2000-08-12 Dispenser for liquids or for viscous or sprayable products

Country Status (5)

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US (1) US6705493B1 (en)
EP (1) EP1202816B1 (en)
AT (1) ATE262379T1 (en)
DE (2) DE19938798A1 (en)
WO (1) WO2001012338A1 (en)

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Also Published As

Publication number Publication date
EP1202816A1 (en) 2002-05-08
ATE262379T1 (en) 2004-04-15
DE50005806D1 (en) 2004-04-29
WO2001012338A1 (en) 2001-02-22
DE19938798A1 (en) 2001-03-01
US6705493B1 (en) 2004-03-16

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