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EP1742855A1 - Spray head for atomizing a medium - Google Patents

Spray head for atomizing a medium

Info

Publication number
EP1742855A1
EP1742855A1 EP05716022A EP05716022A EP1742855A1 EP 1742855 A1 EP1742855 A1 EP 1742855A1 EP 05716022 A EP05716022 A EP 05716022A EP 05716022 A EP05716022 A EP 05716022A EP 1742855 A1 EP1742855 A1 EP 1742855A1
Authority
EP
European Patent Office
Prior art keywords
spray head
holding
section
head according
holding element
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.)
Granted
Application number
EP05716022A
Other languages
German (de)
French (fr)
Other versions
EP1742855B1 (en
Inventor
Rüdiger Belau
Lutz Maske
Campbell Patrick
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.)
Boehringer Ingelheim Microparts GmbH
Original Assignee
Boehringer Ingelheim Microparts 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 Boehringer Ingelheim Microparts GmbH filed Critical Boehringer Ingelheim Microparts GmbH
Publication of EP1742855A1 publication Critical patent/EP1742855A1/en
Application granted granted Critical
Publication of EP1742855B1 publication Critical patent/EP1742855B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/16—Actuating means
    • B65D83/20—Actuator caps
    • B65D83/206—Actuator caps comprising cantilevered actuating elements, e.g. levers pivoting about living hinges

Definitions

  • the invention relates to a spray head for atomizing a medium with the features of the preamble of claim 1.
  • a spray head is placed on a spray can and triggered by simple pressure on an actuating mechanism, so that the medium is discharged in a spray.
  • WO 03/051522 AI From WO 03/051522 AI a valve is known in which the medium is atomized or atomized through a capillary tube without a nozzle. The known valve is designed for flow rates from 0.5 g / s to 0.01 g / s.
  • WO 03/051522 AI describes how the capillary tube of the valve is to be dimensioned in order to be able to spray the atomized medium.
  • the result of using the capillary tube is that only a volume ratio of 1:50 to 1: 5000 is required for the ratio of medium to propellant gas at atmospheric pressure. As a result, little propellant gas is required and the spray containers can be designed with a small volume.
  • a spray head body has a holding device which has an inlet opening, an adjoining, closed channel section and an adjoining holding section bent by 90 °.
  • the holding device also includes an actuating element of the spray head body, which forms the complementary component to the holding section.
  • the channel element designed as a capillary tube is nozzleless and leads to
  • BESTATIGUNGSKOPIE nebulization of the medium by transport in the capillary tube and exiting from it.
  • the actuating element and the holding section are pressed upward against a stop by means of a tension spring.
  • the actuating element and the holding section are held against one another in contact.
  • This is the only way to fix the channel element in the holding section.
  • This has assembly-technical disadvantages, because it has to be installed practically under the pressure of a tension spring. These difficulties in assembly are particularly important because a channel element designed as a capillary tube is quickly irreparably damaged. The reject rate when installing such a spray head is likely to be high.
  • the teaching is based on the problem of optimizing the known, previously explained spray head in terms of assembly technology.
  • the construction described with at least one clamping element allows the channel element, in particular the capillary tube, to be fixed in advance in the holding section of the holding element, that is to say to hold it in a latching or latching manner, and thus to handle the channel element together with the holding element during assembly without it is damaged. It is also possible to mount the holding element first. Then the channel element can simply be inserted into the channel section of the holding element and then clamped or locked in the holding section. In this respect, there is also a pre-fixation.
  • the teaching of the invention is particularly preferably implemented in that the holding section has at least one pair of clamping jaws which comprise the channel element.
  • the channel element projects over the holding section at the upper end, as is already the case at the starting point.
  • the holding section it is recommended that the holding section have at least one opening on a side pointing away from the bend.
  • the holding element preferably has a closed channel section running in the longitudinal direction of the spray head body, into which the channel element is inserted. Furthermore, the holding element preferably has a cylindrical receiving section for a seat of a valve.
  • the channel section expediently has one or more circumferential retaining projections which hold the channel element in a clamping manner without reducing its inside diameter.
  • the holding element additionally has an extension which has a rear wall which runs in the longitudinal direction of the spray head body and which is arranged approximately in the region of the holding section.
  • the rear wall has a depression on the side facing away from the outlet opening, which is delimited laterally by walls facing away from the outlet opening.
  • the spray head body has a projection facing the holding element, which lies flat against the rear wall of the extension in the recess on the side walls.
  • the spray head body has at least one second projection which bears on the rear wall on the side facing the outlet opening.
  • the spray head body has at least one contact surface which rests on the holding element. The force is transmitted from the actuating element via the holding element to the valve via the contact surface.
  • the spray head body preferably has connecting means which hold the holding element in it.
  • the connecting means have two mutually facing projections with projecting lugs which engage behind the holding element near the outlet opening of the channel element.
  • the connecting means are preferably designed as snap means, so that the holding element with the channel element used can snap into the spray head body.
  • FIG. 3 shows the holding element in a section along the line III-III from FIG. 2,
  • FIG. 5 shows a cross section through the holding element along the line V-V from FIG. 3,
  • Fig. 8 shows a section through the snap projections in the spray head body along the line VIII-VIII in Fig. 7 and
  • FIG. 1 shows a cross section through the spray head according to the invention with a spray head body 10, a holding element 12 and a channel element 14.
  • the spray head body 10 has a fastening ring 16 with inwardly projecting projections 18, with which the fastening ring 16 on a spray container (not shown) ) can be attached.
  • the spray head body 10 also has an actuating element 20 with an actuating depression 22.
  • the holding element 12 has an inlet opening 24, an adjoining channel section 26 and a subsequent holding section 28.
  • the holding section 28 is bent through 90 ° and is additionally supported by a wall 30.
  • the holding element 12 also has an extension 32 with a rear wall 34 (see also FIGS. 2 to 5).
  • the extension 32 is open on its side facing the operating recess 22.
  • a channel element 14 in the form of a capillary tube is inserted into the holding element 12.
  • the capillary tube 14 serves to atomize the mixture of medium and propellant, which mixture can also have other constituents.
  • the capillary tube 14 does not necessarily consist of the same plastic material as the holding element 12 and / or the spray head body 10, but can be made of a softer and more flexible material.
  • FIGS. 2 to 5. 3 shows the holding element 12 with the channel section 26.
  • the channel section 26 has a section in the region of the inlet opening 24 with a holding projection 36 for receiving a valve seat.
  • a cylindrical holding section 38 connects to the holding projection 36.
  • the diameter then widens in a section 39 and is subsequently delimited by a holding section 40 which widens conically on the side facing away from the inlet opening 24.
  • the channel section 26 also has a receiving area 42 for the capillary tube 14. In the inserted state, the capillary tube 14 lies on the projection 36.
  • the end of the channel section 26 pointing away from the inlet opening 24 has a conical extension 46, to which the extension 32 is connected with a rear wall 34.
  • the extension 32 is approximately cuboid in shape, see FIG. 4, the rear wall 34 being delimited by two side walls 35 in order to form a depression.
  • the capillary tube 14 is guided through the neck 32.
  • the holding section 28 is then angled to the conical extension 46 by approximately 90 °.
  • the holding section 28 is designed to be open on the side facing away from the bend, a recess being formed for receiving the channel element 14 with a rounded base.
  • three clamping elements 50 extending in the longitudinal direction of the holding element 12 are provided in the form of projections, which hold the capillary tube 14 inserted in the holding section 28 by means of longitudinal ribs 51.
  • the spray head body 10 is shown in perspective in the section from FIG. 1.
  • the projection 52 which projects into the spray head body 10 and bears against the rear wall 34, is cut in the middle.
  • the projection 52 is connected on the back to a wall 53 which protrudes from the spray head body 10 in the longitudinal direction of the holding section 28. Furthermore, a projection 54 at the outlet opening is visible in FIG. 6, which extends like the wall 53 in the direction of the holding section 28 and is shown from the front in FIG. 8. A second projection 55 is provided adjacent to the projection 52 and extends parallel to the first projection 52, but is shorter. The projection 52 has a wedge-shaped end in cross section. In the assembled state, the rear wall 34 is located between the projections 52 and 55, as a result of which the holding element 12 is held securely even when actuated.
  • FIG 8 shows a detailed view in the area of the outlet opening 62 with a slot 63.
  • Snap lugs 56 delimit a partially round opening.
  • the holding element 12 is snapped and held in the region of the holding section 28 near the outlet opening between the snap lugs 56.
  • Projection 54 (see FIGS. 6, 7) abuts the channel element 14 from above.
  • slot 63 facilitates the mounting of the holding element 12 and, on the other hand, allows a drop which forms at the opening of the channel element 14 to flow back and does not dry out in the channel element 14 in the case of viscous media.
  • Fig. 7 shows a section through the spray head body 10.
  • the projection 52 projects beyond the shoulder 32 and lies flat against the rear wall 34.
  • the projection 58 has two locking elements 59, each with a contact surface 60, which abut the side wall of the extension 32.
  • a force is exerted on the actuating trough 22.
  • the force is transmitted to the projection 32 via the projection 58 and the contact surface 60 and presses the holding element 12 onto the valve.
  • the locking elements 59 hold the holding element laterally.
  • the valve opens and the mixture of medium and propellant gas enters the capillary tube 14, where the medium to be applied is atomized.
  • the current exits via the outlet opening 62 and the medium is sprayed.
  • the valve closes and the spraying process is ended.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

The invention relates to a spray head for atomising a medium using a pressurised propellant, with a spray head body (10) which comprises a fastening ring (6) and an actuating element (20) movably connected thereto, a holding element (12) which comprises an inlet port (24), an adjoining duct section (26) and a holding section (28), and a duct element (14) which has an outlet port (62) for the medium and which has in at least one section a diameter such that the medium to be discharged atomizes in the flow of propellant, the duct element (14) preferably being a capillary pipe or capillary tube and/or having a constant diameter over its entire length, the duct element (14) being arranged in the holding section (28) of the holding element (12) and, preferably, being bent through approximately 90° in the holding section (28) of the holding element (12) and the holding element (12) preferably being connected to the spray head body (10). The assembly of this spray head is made easier by the fact that the holding element (12) comprises, at least in the holding section (28), particularly at the upper end thereof, at least one clamping element (50) for clamping or latching the duct element (14) on the holding element (12).

Description

Sprühkopf zum Atomisieren eines Mediums Spray head for atomizing a medium

Die Erfindung betriff einen Sprühkopf zum Atomisieren eines Mediums mit den Merkmalen des Oberbegriffs von Anspruch 1. Ein solcher Sprühkopf wird auf eine Sprühdose aufgesetzt und durch einfachen Druck auf einen Betätigungsmechanismus ausgelöst, so daß das Medium in einem Sprühnebel ausgetragen wird.The invention relates to a spray head for atomizing a medium with the features of the preamble of claim 1. Such a spray head is placed on a spray can and triggered by simple pressure on an actuating mechanism, so that the medium is discharged in a spray.

Klassische Aerosol- Sprühsystemen arbeiten mit großen Volumina an Treibgas, weil über komplizierte Ventil- und Düsenstrukturen das Medium versprüht wird.Classic aerosol spray systems work with large volumes of propellant gas because the medium is sprayed through complicated valve and nozzle structures.

Aus der WO 03/051522 AI ist ein Ventil bekannt, bei dem das Medium durch ein Kapillarrohr ohne Düse atomisiert bzw. zerstäubt wird. Das bekannte Ventil ist für Flußraten von 0,5 g/s bis 0,01 g/s ausgelegt. Die WO 03/051522 AI beschreibt, wie das Kapillarrohr des Ventils zu dimensionieren ist, um das atomi- sierte Medium versprühen zu können. Ergebnis der Verwendung des Kapillarrohrs ist, daß bei Atmosphärendruck lediglich ein Volumenverhältnis von 1 :50 bis 1 :5000 für das Verhältnis von Medium zu Treibgas erforderlich ist. Mithin wird wenig Treibgas benötigt und die Sprühbehälter können mit einem kleinen Volumen ausgelegt werden.From WO 03/051522 AI a valve is known in which the medium is atomized or atomized through a capillary tube without a nozzle. The known valve is designed for flow rates from 0.5 g / s to 0.01 g / s. WO 03/051522 AI describes how the capillary tube of the valve is to be dimensioned in order to be able to spray the atomized medium. The result of using the capillary tube is that only a volume ratio of 1:50 to 1: 5000 is required for the ratio of medium to propellant gas at atmospheric pressure. As a result, little propellant gas is required and the spray containers can be designed with a small volume.

Grundsätzlich ist das düsenlose Atomisieren von flüssigen Medien mittels eines Kapillarrohrs seit Jahrzehnten bekannten (US 2,592,808 A). Bei dem dortigen Sprühkopf zum Atomisieren eines Mediums unter Verwendung eines unter Druck stehenden Treibmittels weist ein Spruhkopfkorper eine Haltevorrichtung auf, die eine Eintrittsöffnung, einen daran anschließenden, geschlossenen Kanalabschnitt und einen daran anschließenden um 90° abgebogenen Halteabschnitt aufweist. Zu der Halteeinrichtung gehört auch ein Betätigungselement des Sprühkopfkö ers, die das komplementäre Bauteil zum Halteabschnitt bildet. Ein Kanalelement in Form eines Kapillarrohrs oder Kapillarschlauchs, das über seine gesamte Länge einen konstanten Durchmesser besitzt, ist zwischen dem Halteabschnitt und dem komplementären Abschnitt des Betätigungselements entsprechend bogenförmig geführt und überragt mit seinem Ende den Halteabschnitt seitlich. Das als Kapillarrohr ausgeführte Kanalelement ist düsenlos und führt zuBasically, the nozzleless atomization of liquid media using a capillary tube has been known for decades (US 2,592,808 A). In the spray head there for atomizing a medium using a pressurized propellant, a spray head body has a holding device which has an inlet opening, an adjoining, closed channel section and an adjoining holding section bent by 90 °. The holding device also includes an actuating element of the spray head body, which forms the complementary component to the holding section. A channel element in the form of a capillary tube or capillary tube, which has a constant diameter over its entire length, is guided in a correspondingly arcuate manner between the holding section and the complementary section of the actuating element and laterally projects beyond the holding section with its end. The channel element designed as a capillary tube is nozzleless and leads to

BESTATIGUNGSKOPIE einer Vernebelung des Mediums durch den Transport im Kapillarrohr und das Austreten aus demselben.BESTATIGUNGSKOPIE nebulization of the medium by transport in the capillary tube and exiting from it.

Das Betätigungselement und der Halteabschnitt werden mittels einer Spannfeder nach oben gegen einen Anschlag gedrückt. Dadurch werden das Betätigungselement und der Halteabschnitt in Anlage aneinander gehalten. Nur dadurch wird das Kanalelement im Halteabschnitt fixiert. Das hat montagetechnische Nachteile, weil praktisch unter dem Druck einer Spannfeder montiert werden muß. Diese Schwierigkeiten bei der Montage schlagen insbesondere deshalb zu Buche, weil ein als Kapillarrohr ausgeführtes Kanalelement schnell irreparabel beschädigt wird. Die Ausschußrate bei der Montage eines solchen Sprühkopfes dürfte hoch sein.The actuating element and the holding section are pressed upward against a stop by means of a tension spring. As a result, the actuating element and the holding section are held against one another in contact. This is the only way to fix the channel element in the holding section. This has assembly-technical disadvantages, because it has to be installed practically under the pressure of a tension spring. These difficulties in assembly are particularly important because a channel element designed as a capillary tube is quickly irreparably damaged. The reject rate when installing such a spray head is likely to be high.

Der Lehre liegt das Problem zugrunde, den bekannten, zuvor erläuterten Sprüh- köpf montagetechnisch zu optimieren.The teaching is based on the problem of optimizing the known, previously explained spray head in terms of assembly technology.

Die zuvor aufgezeigte Problemstellung ist bei einem Sprühkopf mit den Merkmalen des Oberbegriffs von Anspruch 1 durch die Merkmale des kennzeichnenden Teils von Anspruch 1 gelöst. Bevorzugte Ausgestaltungen und Weiterbil- düngen sind Gegenstand der Unteransprüche.The problem presented above is solved in a spray head with the features of the preamble of claim 1 by the features of the characterizing part of claim 1. Preferred refinements and developments are the subject of the subclaims.

Die beschriebene Konstruktion mit mindestens einem Klemmelement erlaubt es, das Kanalelement, insbesondere also das Kapillarrohr, im Halteabschnitt des Halteelements vorab zu fixieren, also klemmend oder rastend zu halten, und so das Kanalelement gemeinsam mit dem Halteelement bei der Montage zu handhaben, ohne daß es beschädigt wird. Es ist auch möglich, das Halteelement zunächst zu montieren. Dann läßt sich das Kanalelement einfach in den Kanalabschnitt des Halteelements einstecken und anschließend im Halteabschnitt verklemmen oder verrasten. Auch insoweit erfolgt also ein Vorfixierung.The construction described with at least one clamping element allows the channel element, in particular the capillary tube, to be fixed in advance in the holding section of the holding element, that is to say to hold it in a latching or latching manner, and thus to handle the channel element together with the holding element during assembly without it is damaged. It is also possible to mount the holding element first. Then the channel element can simply be inserted into the channel section of the holding element and then clamped or locked in the holding section. In this respect, there is also a pre-fixation.

Besonders bevorzugt wird die Lehre der Erfindung dadurch realisiert, daß der Halteabschnitt mindestens ein Paar von Klemmbacken aufweist, die das Kanalelement umfassen.The teaching of the invention is particularly preferably implemented in that the holding section has at least one pair of clamping jaws which comprise the channel element.

Bevorzugt ist vorgesehen, daß das Kanalelement am oberen Ende über den Halteabschnitt vorsteht, so wie das auch bereits beim Ausgangspunkt der Fall ist. Möglich ist aber auch ein Abschließen der Öffnung des Kanalelements mit dem Halteabschnitt. In jedem Falle empfiehlt es sich, daß der Halteabschnitt auf einer von der Biegung wegweisenden Seite mindestens eine Durchbrechung aufweist.It is preferably provided that the channel element projects over the holding section at the upper end, as is already the case at the starting point. However, it is also possible to close the opening of the channel element with the holding section. In any case, it is recommended that the holding section have at least one opening on a side pointing away from the bend.

Das Halteelement weist bevorzugt einen in Längsrichtung des Sprühkopfkörpers verlaufenden geschlossenen Kanalabschnitt auf, in den das Kanalelement eingesetzt ist. Ferner weist das Halteelement bevorzugt einen zylindrischen Aufhah- meabschnitt für einen Sitz eines Ventils auf. Zweckmäßigerweise weist der Kanalabschnitt einen oder mehrere umlaufende Haltevorsprünge auf, die das Kanal- element klemmend halten, ohne dessen Innendurchmesser zu verringern.The holding element preferably has a closed channel section running in the longitudinal direction of the spray head body, into which the channel element is inserted. Furthermore, the holding element preferably has a cylindrical receiving section for a seat of a valve. The channel section expediently has one or more circumferential retaining projections which hold the channel element in a clamping manner without reducing its inside diameter.

Das Halteelement weist in einer zweckmäßigen Ausgestaltung zusätzlich einen Ansatz auf, der eine in der Längsrichtung des Sprühkopfköφers verlaufende Rückwand aufweist, die ungefähr im Bereich des Halteabschnitts angeordnet ist. Die Rückwand weist an der von der Austritts Öffnung fortweisenden Seite eine Vertiefung auf, die seitlich durch von der Austrittsöffnung fortweisende Wände begrenzt ist.In an expedient embodiment, the holding element additionally has an extension which has a rear wall which runs in the longitudinal direction of the spray head body and which is arranged approximately in the region of the holding section. The rear wall has a depression on the side facing away from the outlet opening, which is delimited laterally by walls facing away from the outlet opening.

Der Sprühkopfköφer weist einen zum Halteelement weisenden Vorsprung auf, der flach an der Rückwand des Ansatzes in der Vertiefung an den Seitenwänden anliegt. Zusätzlich weist der Sprühkopfköφer mindestens einen zweiten Vorsprung auf, der an der Rückwand auf der zur Austrittsöff ung weisenden Seite anliegt. Ferner weist der Sprühkopfköφer mindestens eine Anlagefläche auf, die an dem Halteelement anliegt. Über die Anlagefläche wird die Kraft von dem Betätigungselement über das Halteelement auf das Ventil weitergeleitet.The spray head body has a projection facing the holding element, which lies flat against the rear wall of the extension in the recess on the side walls. In addition, the spray head body has at least one second projection which bears on the rear wall on the side facing the outlet opening. Furthermore, the spray head body has at least one contact surface which rests on the holding element. The force is transmitted from the actuating element via the holding element to the valve via the contact surface.

Ferner weist der Sprühkopfköφer bevorzugt Verbindungsmittel auf, die das Halteelement in diesem halten. Die Verbindungsmittel weisen zwei einander zugewandte Vorsprünge mit vorstehenden Nasen auf, die das Halteelement nahe der Austrittsöffnung des Kanalelements hintergreifen. Die Verbindungsmittel sind bevorzugt als Schnappmittel ausgebildet, so daß das Halteelement mit dem eingesetzten Kanalelement in den Sprühkopfköφer einschnappen kann.Furthermore, the spray head body preferably has connecting means which hold the holding element in it. The connecting means have two mutually facing projections with projecting lugs which engage behind the holding element near the outlet opening of the channel element. The connecting means are preferably designed as snap means, so that the holding element with the channel element used can snap into the spray head body.

Ein bevorzugtes Ausführungsbeispiel des erfindungsgemäßen Sprühkopfes wird nachfolgend anhand der Zeichnungen näher erläutert. Es zeigt: Fig. 1 einen erfindungsgemäßen Sprühkopf in einem Schnitt von der Seite,A preferred embodiment of the spray head according to the invention is explained in more detail below with reference to the drawings. It shows: 1 shows a spray head according to the invention in a section from the side,

Fig. 2 das Halteelement in einer perspektivischen Ansicht von der Rückseite,2 the holding element in a perspective view from the rear,

Fig. 3 das Halteelement in einem Schnitt entlang der Linie III-III aus Fig. 2,3 shows the holding element in a section along the line III-III from FIG. 2,

Fig. 4 a,b das Halteelement von schräg oben in einer perspektivischen Ansicht und in einer geschnittenen Ansicht,4 a, b the holding element obliquely from above in a perspective view and in a sectional view,

Fig. 5 einen Querschnitt durch das Halteelement entlang der Linie V-V aus Fig. 3,5 shows a cross section through the holding element along the line V-V from FIG. 3,

Fig. 6 einen Schnitt durch den Sprühkopfköφer in einer perspektivischen Ansicht,6 shows a section through the spray head body in a perspective view,

Fig. 7 einen Schnitt durch den Sprühkopfköφer in Ansicht von der Seite,7 shows a section through the spray head body in a view from the side,

Fig. 8 einen Schnitt durch die Schnappvorsprünge in dem Spruhkopfkorper entlang der Linie VIII- VIII in Fig. 7 undFig. 8 shows a section through the snap projections in the spray head body along the line VIII-VIII in Fig. 7 and

Fig. 9 einen Schnitt durch den Sprühkopfköφer entlang der Linie IX-IX in Fig. 7.9 shows a section through the spray head body along the line IX-IX in FIG. 7.

Fig. 1 zeigt einen Querschnitt durch den erfindungsgemäßen Sprühkopf mit einem Sprühkopfköφer 10, einem Halteelement 12 und einem Kanalelement 14. Der Sprühkopfköφer 10 besitzt einen Befestigungsring 16 mit nach innen vorstehenden Vorsprüngen 18, mit denen der Befestigungsring 16 an einem Sprüh- behälter (nicht dargestellt) befestigt werden kann. Der Sprühkopfköφer 10 besitzt ferner ein Betätigungselement 20 mit einer Betätigungsmulde 22.1 shows a cross section through the spray head according to the invention with a spray head body 10, a holding element 12 and a channel element 14. The spray head body 10 has a fastening ring 16 with inwardly projecting projections 18, with which the fastening ring 16 on a spray container (not shown) ) can be attached. The spray head body 10 also has an actuating element 20 with an actuating depression 22.

Das Halteelement 12 besitzt eine Eintrittsöffhung 24, einen daran anschließenden Kanalabschnitt 26 und einen nachfolgenden Halteabschnitt 28. Der Halteab- schnitt 28 ist um 90° gebogen und wird durch eine Wand 30 zusätzlich abgestützt. Das Halteelement 12 besitzt ferner einen Ansatz 32 mit einer Rückwand 34 (vgl. auch Fig. 2 bis 5). Der Ansatz 32 ist auf seiner zur Betätigungsmulde 22 weisenden Seite offen ausgebildet.The holding element 12 has an inlet opening 24, an adjoining channel section 26 and a subsequent holding section 28. The holding section 28 is bent through 90 ° and is additionally supported by a wall 30. The holding element 12 also has an extension 32 with a rear wall 34 (see also FIGS. 2 to 5). The extension 32 is open on its side facing the operating recess 22.

In das Halteelement 12 eingesetzt ist ein Kanalelement 14 in Form eines Kapillarschlauchs. Der Kapillarschlauch 14 dient zur Atomisierung des Gemisches aus Medium und Treibmittel, wobei das Gemisch noch weitere Bestandteile aufweisen kann. Der Kapillarschlauch 14 besteht nicht notwendig aus demselben Kunststoffmaterial wie das Halteelement 12 und/oder der Sprühkopfköφer 10, sondern kann aus einem weicheren und biegsameren Material hergestellt sein.A channel element 14 in the form of a capillary tube is inserted into the holding element 12. The capillary tube 14 serves to atomize the mixture of medium and propellant, which mixture can also have other constituents. The capillary tube 14 does not necessarily consist of the same plastic material as the holding element 12 and / or the spray head body 10, but can be made of a softer and more flexible material.

Nähere Einzelheiten zu dem Halteelement 12 sind Fig. 2 bis 5 zu entnehmen. Fig. 3 zeigt das Halteelement 12 mit dem Kanalabschnitt 26. Der Kanalabschnitt 26 besitzt im Bereich der Eintrittsöffnung 24 einen Abschnitt mit einem Halte- vorsprung 36 zur Aufnahme eines Ventilsitzes. An den Haltevorsprung 36 schließt sich ein zylindrischer Halteabschnitt 38 an. Nachfolgend verbreitert sich der Durchmesser in einem Abschnitt 39 und wird nachfolgend durch einen Halteabschnitt 40 begrenzt, der sich auf der von der Eintrittsöffnung 24 fortweisenden Seite kegelförmig erweitert. Der Kanalabschnitt 26 besitzt ferner einen Aufnahmebereich 42 für den Kapillarschlauch 14. Der Kapillarschlauch 14 liegt im eingesetzten Zustand auf dem Vorsprung 36 auf.Further details on the holding element 12 can be found in FIGS. 2 to 5. 3 shows the holding element 12 with the channel section 26. The channel section 26 has a section in the region of the inlet opening 24 with a holding projection 36 for receiving a valve seat. A cylindrical holding section 38 connects to the holding projection 36. The diameter then widens in a section 39 and is subsequently delimited by a holding section 40 which widens conically on the side facing away from the inlet opening 24. The channel section 26 also has a receiving area 42 for the capillary tube 14. In the inserted state, the capillary tube 14 lies on the projection 36.

Das von der Eintrittsöffnung 24 wegweisende Ende des Kanalabschnitts 26 besitzt eine konische Erweiterung 46, an die sich der Ansatz 32 mit einer Rückwand 34 anschließt. Der Ansatz 32 besitzt ungefähr Quaderform, vergleiche Fig. 4, wobei die Rückwand 34 durch zwei Seitenwände 35 begrenzt ist, um eine Vertiefung zu bilden. Im eingesetzten Zustand ist der Kapillarschlauch 14 durch den Ansatz 32 geführt.The end of the channel section 26 pointing away from the inlet opening 24 has a conical extension 46, to which the extension 32 is connected with a rear wall 34. The extension 32 is approximately cuboid in shape, see FIG. 4, the rear wall 34 being delimited by two side walls 35 in order to form a depression. In the inserted state, the capillary tube 14 is guided through the neck 32.

Der Halteabschnitt 28 ist anschließend an die konische Erweiterung 46 um unge- fähr 90° abgewinkelt. Wie aus Fig. 5 ersichtlich ist, ist der Halteabschnitt 28 an der von der Biegung wegweisenden Seite offen ausgebildet, wobei sich eine Ausnehmung zur Aufnahme des Kanalelements 14 mit einem abgerundeten Grund bildet. Beabstandet voneinander sind in dem Halteabschnitt 28 drei in Längsrichtung des Halteelements 12 verlaufende Klemmelemente 50 in Form von Vorsprüngen vorgesehen, die den eingesetzten Kapillarschlauch 14 in dem Halteabschnitt 28 durch Längsrippen 51 halten. In Fig. 6 ist der Sprühkopfköφer 10 in dem Schnitt aus Fig. 1 perspektivisch dargestellt. Der Vorsprung 52, der in den Sprühkopfköφer 10 vorsteht und an der Rückwand 34 anliegt, ist mittig geschnitten. Der Vorsprung 52 ist rückseitig mit einer Wand 53 verbunden, die aus dem Sprühkopfköφer 10 in Längsrichtung des Halteabschnitts 28 vorsteht. Ferner ist in Fig. 6 ein Vorsprung 54 an der Austrittsöffnung sichtbar, der sich wie die Wand 53 in Richtung des Halteab- schnitts 28 erstreckt und in Fig. 8 von vorne dargestellt ist. Benachbart zu dem Vorsprung 52 ist ein zweiter Vorsprung 55 vorgesehen, der sich parallel zu dem ersten Vorsprung 52 erstreckt, jedoch kürzer ist. Der Vorsprung 52 besitzt ein im Querschnitt keilförmiges Ende. Im montierten Zustand befindet sich die Rückwand' 34 zwischen den Vorsprüngen 52 und 55, wodurch das Halteelement 12 auch bei einer Betätigung sicher gehalten wird.The holding section 28 is then angled to the conical extension 46 by approximately 90 °. As can be seen from FIG. 5, the holding section 28 is designed to be open on the side facing away from the bend, a recess being formed for receiving the channel element 14 with a rounded base. Spaced apart from one another, three clamping elements 50 extending in the longitudinal direction of the holding element 12 are provided in the form of projections, which hold the capillary tube 14 inserted in the holding section 28 by means of longitudinal ribs 51. 6 the spray head body 10 is shown in perspective in the section from FIG. 1. The projection 52, which projects into the spray head body 10 and bears against the rear wall 34, is cut in the middle. The projection 52 is connected on the back to a wall 53 which protrudes from the spray head body 10 in the longitudinal direction of the holding section 28. Furthermore, a projection 54 at the outlet opening is visible in FIG. 6, which extends like the wall 53 in the direction of the holding section 28 and is shown from the front in FIG. 8. A second projection 55 is provided adjacent to the projection 52 and extends parallel to the first projection 52, but is shorter. The projection 52 has a wedge-shaped end in cross section. In the assembled state, the rear wall 34 is located between the projections 52 and 55, as a result of which the holding element 12 is held securely even when actuated.

Fig. 8 zeigt eine Detailansicht im Bereich der Austrittsöffnung 62 mit einem Schlitz 63. Schnappnasen 56 begrenzen eine teilweise runde Öffnung. Zur Verbindung des Halteelements 12 mit dem Sprühkopfköφer 10 wird das Halteelement 12 im Bereich des Haltabschnitts 28 nahe der Austrittsöffnung zwischen die Schnappnasen 56 eingeschnappt und gehalten. Vorsprung 54 (vergl. Fign. 6, 7) liegt von oben an dem Kanalelement 14 an. Schlitz 63 erleichtert einerseits die Montage des Halteelements 12 und erlaubt andererseits, daß bei viskosen Medien ein sich an der Öffnung des Kanalelements 14 bildender Tropfen zurückfließt und nicht in dem Kanalelement 14 eintrocknet.8 shows a detailed view in the area of the outlet opening 62 with a slot 63. Snap lugs 56 delimit a partially round opening. To connect the holding element 12 to the spray head body 10, the holding element 12 is snapped and held in the region of the holding section 28 near the outlet opening between the snap lugs 56. Projection 54 (see FIGS. 6, 7) abuts the channel element 14 from above. On the one hand, slot 63 facilitates the mounting of the holding element 12 and, on the other hand, allows a drop which forms at the opening of the channel element 14 to flow back and does not dry out in the channel element 14 in the case of viscous media.

Fig. 7 zeigt einen Schnitt durch den Sprühkopfköφer 10. Auf der Innenseite der Betätigungsmulde 22 sind zwei beabstandet zueinander angeordnete Vorsprünge 58 vorgesehen, die jeweils auf ihren einander zugewandten Seiten Anlageflächen 60 in Form eines Absatzes besitzen. Im eingesetzten Zustand des Halteelements 12 steht der Vorsprung 52 über den Ansatz 32 hinaus und liegt flächig an der Rückwand 34 an. Der Vorsprung 58 besitzt zwei Rastelemente 59 mit jeweils einer Anlagefläche 60, die an der Seitenwand des Ansatzes 32 anliegen.Fig. 7 shows a section through the spray head body 10. On the inside of the actuating trough 22 there are two spaced apart projections 58, each of which has contact surfaces 60 in the form of a shoulder on their mutually facing sides. In the inserted state of the holding element 12, the projection 52 projects beyond the shoulder 32 and lies flat against the rear wall 34. The projection 58 has two locking elements 59, each with a contact surface 60, which abut the side wall of the extension 32.

Zur Betätigung des erfindungsgemäßen Sprühkopfes wird eine Kraft auf die Betätigungsmulde 22 ausgeübt. Über den Vorsprung 58 und die Anlagefläche 60 wird die Kraft auf den Ansatz 32 übertragen und drückt das Halteelement 12 auf das Ventil. Die Rastelemente 59 halten dabei das Halteelement seitlich. Das Ventil öffnet und das Gemisch aus Medium und Treibgas tritt in den Kapillarschlauch 14 ein, wo das anzutragende Medium atomisiert wird. Über die Austrittsöffnung 62 tritt der Strom aus und das Medium wird versprüht. Sobald die Kraft mehr auf die Betätigungsmulde 22 ausgeübt wird, schließt das Ventil und der Sprühvorgang ist beendet. To actuate the spray head according to the invention, a force is exerted on the actuating trough 22. The force is transmitted to the projection 32 via the projection 58 and the contact surface 60 and presses the holding element 12 onto the valve. The locking elements 59 hold the holding element laterally. The The valve opens and the mixture of medium and propellant gas enters the capillary tube 14, where the medium to be applied is atomized. The current exits via the outlet opening 62 and the medium is sprayed. As soon as the force is exerted more on the actuating depression 22, the valve closes and the spraying process is ended.

Claims

Patentansprüche: claims: 1. Sprühkopf zum Atomisieren eines Mediums unter Verwendung eines unter Druck stehenden Treibmittels, mit einem Sprühkopfköφer (10), der einen Befestigungsring (6) und ein beweglich mit diesem verbundenes Betätigungselement (20) aufweist, einem Halteelement (12), das eine Eintrittsöffnung (24), einen daran anschließenden Kanalabschnitt (26) und einen Halteabschnitt (28) aufweist, und einem Kanalelement (14), das eine Austrittsöffnung (62) für das Medium auf- weist und das in mindestens einem Abschnitt einen solchen Durchmesser aufweist, daß das auszutragende Medium in dem Strom des Treibmittels atomisiert, wobei das Kanalelement (14) vorzugsweise ein Kapillarschlauch oder Kapillarrohr ist und/oder über seine gesamte Länge einen konstanten Durchmesser aufweist, wobei das Kanalelement (14) in dem Halteabschnitt (28) des Halteelements (12) angeordnet und, vorzugsweise, in dem Halteabschnitt (28) des Halteelements (12) um ungefähr 90° abgewinkelt ist und wobei, vorzugsweise, das Halteelement (12) mit dem Sprühkopfköφer (10) verbunden ist, dadurch gekennzeichnet, daß das Halteelement (12) zumindest im Halteabschnitt (28), insbesondere an dessen oberem Ende, mindestens ein Klemmelement (50) zum klemmenden oder rastenden Halten des Kanalelements (14) am Halteelement (12) aufweist.1. spray head for atomizing a medium using a pressurized propellant, with a Sprühkopfköφer (10) having a mounting ring (6) and an actuating element (20) movably connected thereto, a holding element (12) which has an inlet opening ( 24), an adjoining channel section (26) and a holding section (28), and a channel element (14) which has an outlet opening (62) for the medium and which has a diameter in at least one section such that the medium to be discharged atomized in the flow of the propellant, the channel element (14) preferably being a capillary tube or capillary tube and / or having a constant diameter over its entire length, the channel element (14) in the holding section (28) of the holding element (12) arranged and, preferably, is angled in the holding section (28) of the holding element (12) by approximately 90 ° and, preferably the holding element (12) is connected to the spray head body (10), characterized in that the holding element (12) at least in the holding section (28), in particular at its upper end, at least one clamping element (50) for clamping or latching holding of the channel element ( 14) on the holding element (12). 2. Sprühkopf nach Anspruch 1, dadurch gekennzeichnet, daß das Halteelement (12) im Halteabschnitt (28) mindestens ein Paar von Klemmbacken (50) aufweist, die das Kanalelement (14) umfassen.2. Spray head according to claim 1, characterized in that the holding element (12) in the holding section (28) has at least one pair of clamping jaws (50) which comprise the channel element (14). 3. Sprühkopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Kanalelement (14) am oberen Ende über den Halteabschnitt (28) vorsteht und/oder daß der Halteabschnitt (28) auf seiner von der Biegung fortweisenden Seite mindestens eine Durchbrechung aufweist. 3. Spray head according to claim 1 or 2, characterized in that the channel element (14) projects at the upper end over the holding section (28) and / or that the holding section (28) has at least one opening on its side pointing away from the bend. 4. Sprühkopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kanalabschnitt (26) geschlossen ist und das Kanalelement (14) in den in Längsrichtung des Sprühkopf öφers (10) verlaufenden geschlossenen Kanalabschnitt (26) eingesteckt ist.4. Spray head according to one of claims 1 to 3, characterized in that the channel section (26) is closed and the channel element (14) in the longitudinal direction of the spray head Öφers (10) extending closed channel section (26) is inserted. 5. Sprühkopf nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Halteelement (12) einen Aufnahmeabschnitt für einen Sitz eines Ventils aufweist.5. Spray head according to one of claims 1 to 4, characterized in that the holding element (12) has a receiving section for a seat of a valve. 6. Sprühkopf nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß der Kanalabschnitt (26) mindestens einen zylindrischen Haltevorsprung (36) aufweist.6. Spray head according to claim 4 or 5, characterized in that the channel section (26) has at least one cylindrical holding projection (36). 7. Sprühkopf nach Anspruch 6, dadurch gekennzeichnet, daß ein Haltevorsprung (36) an den Aufnahmeabschnitt angrenzt und ein zweiter Haltevorsprung (40) beabstandet von dem ersten Haltevorsprung (36) angeordnet ist.7. Spray head according to claim 6, characterized in that a holding projection (36) is adjacent to the receiving section and a second holding projection (40) is arranged spaced from the first holding projection (36). 8. Sprühkopf nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Halteelement (12) einen Ansatz (32) mit einer in der Längsrichtung des Sprühkopfköφers (10) verlaufenden Rückwand (34) aufweist.8. Spray head according to one of claims 1 to 7, characterized in that the holding element (12) has a projection (32) with a in the longitudinal direction of the spray head body (10) extending rear wall (34). 9. Sprühkopf nach Anspruch 8, dadurch gekennzeichnet, daß die Rückwand (34) an ihrer von der Austrittsöffnung (62) wegweisenden Seite eine Vertiefung aufweist, die seitlich durch in Längsrichtung verlaufende Wände (35) begrenzt ist.9. Spray head according to claim 8, characterized in that the rear wall (34) on its side facing away from the outlet opening (62) has a recess which is laterally delimited by walls (35) extending in the longitudinal direction. 10. Sprühkopf nach Anspruch 9, dadurch gekennzeichnet, daß der Sprühkopfköφer (10) mindestens einen zum Halteelement (12) weisen- den Vorsprung (52) aufweist, der flach an der Rückwand (34) des Ansatzes (32) und in der Vertiefung an den Seitenwänden anliegt.10. Spray head according to claim 9, characterized in that the spray head body (10) has at least one projection (52) pointing to the holding element (12), which is flat on the rear wall (34) of the extension (32) and in the recess fits the side walls. 11. Sprühkopf nach Anspruch 10, dadurch gekennzeichnet, daß der Sprühkopfköφer (10) einen zweiten, zum Halteelement (12) weisenden Vorsprung (55) aufweist, der an der Rückwand (34) auf der zur Austrittsöffhung (62) weisenden Seite anliegt. 11. Spray head according to claim 10, characterized in that the spray head body (10) has a second, to the holding element (12) facing projection (55) which rests on the rear wall (34) on the side facing the outlet opening (62). 12. Sprühkopf nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, daß der Sprühkopfköφer (10) eine Anlagefläche (60) aufweist, die an dem Ansatz (32) des Halteelements (12) anliegt.12. Spray head according to one of claims 8 to 11, characterized in that the spray head body (10) has a contact surface (60) which bears against the projection (32) of the holding element (12). 13. Sprühkopf nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß der Sprühkopfköφer (10) Verbindungsmittel (54, 56) für das Halteelement 12) aufweist.13. Spray head according to one of claims 1 to 12, characterized in that the spray head body (10) has connecting means (54, 56) for the holding element 12). 14. Sprühkopf nach Anspruch 13, dadurch gekennzeichnet, daß die Verbindungsmittel (54, 56) zwei aneinander zugewandte Vorsprünge mit vorstehenden Nasen (56) aufweisen, die das Halteelement (12) nahe der Austrittsöffhung (62) des Kanalelements (14) -hintergreifen.14. Spray head according to claim 13, characterized in that the connecting means (54, 56) have two mutually facing projections with protruding lugs (56) which engage behind the retaining element (12) near the outlet opening (62) of the channel element (14). 15. Sprühkopf nach Anspruch 14, dadurch gekennzeichnet, daß das Halteelement (12) in die Verbindungsmittel (54, 56) eingeschnappt ist. 15. Spray head according to claim 14, characterized in that the holding element (12) is snapped into the connecting means (54, 56).
EP05716022A 2004-05-05 2005-03-14 Spray head for atomizing a medium Expired - Lifetime EP1742855B1 (en)

Applications Claiming Priority (2)

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DE102004022131A DE102004022131A1 (en) 2004-05-05 2004-05-05 Spray head for atomizing a medium
PCT/EP2005/002676 WO2005108240A1 (en) 2004-05-05 2005-03-14 Spray head for atomizing a medium

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EP1742855A1 true EP1742855A1 (en) 2007-01-17
EP1742855B1 EP1742855B1 (en) 2009-06-24

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US (1) US7967224B2 (en)
EP (1) EP1742855B1 (en)
CN (1) CN100513275C (en)
AT (1) ATE434576T1 (en)
AU (1) AU2005240264A1 (en)
BR (1) BRPI0510672B1 (en)
CA (1) CA2563568A1 (en)
DE (2) DE102004022131A1 (en)
ES (1) ES2327756T3 (en)
IL (1) IL179027A (en)
MX (1) MXPA06012711A (en)
WO (1) WO2005108240A1 (en)
ZA (1) ZA200608912B (en)

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CA2563568A1 (en) 2005-11-17
EP1742855B1 (en) 2009-06-24
ES2327756T3 (en) 2009-11-03
US20080164345A1 (en) 2008-07-10
BRPI0510672A (en) 2007-12-26
DE502005007571D1 (en) 2009-08-06
AU2005240264A1 (en) 2005-11-17
WO2005108240A1 (en) 2005-11-17
IL179027A0 (en) 2007-03-08
MXPA06012711A (en) 2007-02-14
CN100513275C (en) 2009-07-15
US7967224B2 (en) 2011-06-28
DE102004022131A1 (en) 2005-11-24
IL179027A (en) 2010-05-31
CN1950270A (en) 2007-04-18
BRPI0510672B1 (en) 2018-05-29
ATE434576T1 (en) 2009-07-15
WO2005108240A8 (en) 2007-12-21
ZA200608912B (en) 2008-08-27

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