EP2293880B2 - Fluid discharge head - Google Patents

Fluid discharge head Download PDF

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Publication number
EP2293880B2
EP2293880B2 EP09761388.9A EP09761388A EP2293880B2 EP 2293880 B2 EP2293880 B2 EP 2293880B2 EP 09761388 A EP09761388 A EP 09761388A EP 2293880 B2 EP2293880 B2 EP 2293880B2
Authority
EP
European Patent Office
Prior art keywords
discharge head
fluid discharge
head according
valve body
discharge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09761388.9A
Other languages
German (de)
French (fr)
Other versions
EP2293880A1 (en
EP2293880B1 (en
Inventor
Gisbert Welp
Karl-Heinz Waitz
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.)
Silgan Dispensing Systems Hemer GmbH
Original Assignee
MeadWestvaco Calmar GmbH
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Filing date
Publication date
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Priority claimed from DE102008027600A external-priority patent/DE102008027600A1/en
Priority claimed from DE102008027598A external-priority patent/DE102008027598A1/en
Application filed by MeadWestvaco Calmar GmbH filed Critical MeadWestvaco Calmar GmbH
Publication of EP2293880A1 publication Critical patent/EP2293880A1/en
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Publication of EP2293880B2 publication Critical patent/EP2293880B2/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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B05B11/0067—Lift valves having a valve seat located downstream the valve element (take precedence)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3468—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber
    • B05B1/3473—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber in response to liquid pressure
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0072—A valve member forming part of an outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0075—Two outlet valves being placed in a delivery conduit, one downstream the other
    • 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
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • 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
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7835—Valve seating in direction of flow

Definitions

  • the invention relates to a fluid discharge head according to the preamble of claim 1.
  • a fluid discharge head with a discharge connection having a discharge opening which receives an inner sleeve is known.
  • an inner body is arranged which delimits an outlet channel and has a connecting member for connection to the counterpart of a discharge device.
  • the inner sleeve has a sealing surface on the front side, adjacent to the discharge opening, against which a valve plug located on the inner body and closing the outlet channel is spring-preloaded.
  • a valve is thus integrated into the discharge head, in which the valve closure is realized by a relative movement when actuated by the user. Such a valve can be made small. Due to the back suction problem of the fluid discharge head, however, there is insufficient protection against the ingress of germs and bacteria. The use of oligodynamic substances may therefore be necessary so that no germs or other impurities can penetrate into the system through the discharge opening. The use of such oligodynamic substances when using preservative-free media is disadvantageous.
  • the object of the invention is therefore to create a fluid discharge head which allows improved valve closure.
  • a lightning-like closure immediately after a burst of spray ensures that neither germs nor other contaminants can penetrate through the media outlet opening into the fluid discharge head.
  • the force to open the valve is applied directly via the medium conveyed into the discharge head.
  • An adjustable medium pressure opens the spring-loaded valve closure by moving the valve body against a spring force.
  • the medium conveyed into the fluid discharge head by means of a discharge device is directed into a closed and sealed space of the cylinder chamber from which the media outlet flows.
  • the chamber supplies a quantity of media at the media outlet, the media surface of which, in conjunction with the media pre-pressure, prevents the ingress of bacteria and contaminants.
  • a small dimensioning of the valve closure is possible.
  • the intermediate valve plate on which the spring acts to press the valve body into the upper valve seat, preferably has a sealing strip for sealing the cylinder chamber on the bottom.
  • the upper valve seat lifts off when the force on the intermediate valve plate caused by the medium pressure is greater than the spring force to be held.
  • the opening and closing behavior can be influenced by the transmission ratio of the projected areas and the increasing pressure within the cylinder chamber.
  • the lower valve seat preferably has the function of a stuffing box seal for the media channel, against which the moving lower end of the valve body rests in a sealing manner.
  • FIGS. 1 to 3 show a fluid discharge head 1 for use with a discharge device 2, wherein the discharge device 2 comprises a medium reservoir (not shown) for fluid in which the medium is pressurized or from which the medium is discharged via a media pump 3, in particular a thrust piston pump.
  • the discharge device 2 has a counterpart 4 to which the fluid discharge head 1 can be attached.
  • the discharge device 2 with attached fluid discharge head 1 form a dispenser for, in particular, liquid media.
  • the fluid discharge head 1 and the discharge device 2 can be moved axially relative to one another to actuate the discharge while shortening the dispenser.
  • a spring F causes them to return in the opposite direction to the starting position according to FIG Fig. 1 back.
  • the fluid discharge head 1 comprises a discharge connection 5 with a discharge opening 6, which is provided here on the front side on the discharge connection 5.
  • the discharge nozzle 5 receives an inner sleeve 7 which delimits a media channel 8 which connects to a discharge section 26 of a media guide 34 in the form of adjoining channel sections and / or media spaces located within the fluid discharge head 1.
  • the inner sleeve 7 can also have a connecting member 9 for connection to the counterpart 4 of the discharge device 2.
  • the inner sleeve 7 is pot-shaped at its end 11 facing the discharge opening 6 in order to form a cylinder chamber 12 in connection with the front end 13 of the discharge connection 5, which has the discharge opening 6.
  • the inner sleeve 7 receives a spring-loaded valve body 10 which automatically closes the discharge opening 6.
  • the valve body 10 is designed as a cylindrical piston which is axially displaceable in the cylinder chamber 12 formed by the inner sleeve 7 on the head side.
  • the movable valve body 10 divides the cylinder chamber 12 into an upper and a lower chamber section.
  • the upper chamber section forms a pressure chamber 19, which is connected to the media channel 8 and can be opened and closed towards the discharge opening 6.
  • the lower chamber section serves to accommodate a spring element, in particular a compression spring 20, for pressure loading of the valve body 10 so that it closes the discharge opening 6 with a pretensioning force as a spring-loaded valve body 10.
  • an upper valve seat 14 and a lower valve seat 15 are provided, which can also serve as guide bearings for the piston ends 16, 17. At least one of the two valve seats 14, 15 preferably serves as a guide bearing.
  • the piston of the valve body 10 has an intermediate valve disk 18 which forms a chamber bottom of the pressure chamber 19 connected to the media channel 8. The intermediate valve disk 18 seals the pressure chamber 19 from the upper valve seat 14. The intermediate valve disk 18 also serves to guide the movement of the valve body 10 in the cylinder chamber 12.
  • the intermediate valve disk 18 is designed as a circumferential sealing lip which guides the valve body 10 in the cylinder chamber 12 during its upward and downward movement.
  • the intermediate valve plate 18 forms a chamber bottom of the pressure chamber 19, which is axially movable with respect to the discharge opening 6, namely by moving the valve body 10.
  • the volume of the pressure chamber 19 consequently varies, with the increase in volume when the discharge opening 6 is opened by the medium pressure in the passage 21 so that no germs can penetrate.
  • the reduction in the volume of the pressure chamber 19 when the discharge opening 6 is closed causes a residual medium thrust which prevents the penetration of germs.
  • a media discharge pressure can be set in the pressure chamber 19 which is higher than a spring force of the compression spring 20 that closes the valve body 10 Fig. 1 and Fig. 2 show a discharge opening 6 closed by the valve body 10.
  • the valve body 10 is flowed through by medium, for which purpose the valve body 10 has a passage channel 21 which connects the media channel 8 with the pressure chamber 19.
  • the passage channel 21 is preferably guided centrally through the valve body 10.
  • the passage 21 is formed by a riser pipe section, which preferably ends on the outlet side in an annular groove 22, which transfers the passage 21 into the pressure chamber 19.
  • the lower valve seat 15 preferably has the function of a stuffing box seal in which a spout-like widened piston end 17 of the valve body 10 rests in a sealing manner during a downward and upward movement of the valve body 10.
  • the upper valve seat 14 preferably comprises a slotted bushing 24, which can guide the upper piston end 16 during the opening and closing movement, on the other hand allows the flow to the discharge opening 6 through bushing slots when the upper piston end 16 lifts with a preferably rounded sealing surface 23 and the discharge opening 6 relative to the pressure chamber 19 releases.
  • the discharge opening 6 can have one or more openings, depending on which spray pattern or jet pattern is desired.
  • the bush 24 can form a swirl chamber.
  • the socket 24 is preferably formed on the discharge nozzle 5 and is free-standing for this purpose.
  • the pressure chamber 19 surrounds the discharge opening 6 with an inflow tank of fluid which, between the intermediate valve disk 18 and the upper valve seat 14, provides a level of fluid as an inflow reservoir adjacent to the discharge opening 6. Before the valve body 10 is lifted off the upper valve seat 14, the medium is present with a high initial pressure. This pre-pressure in the pressure chamber 19 is higher than the ambient pressure, so that when the discharge opening 6 is opened, the pending medium emerges immediately.
  • the pre-pressure is preferably set in a range between 1.5 and 2.3 bar.
  • Fig. 3 shows the released discharge opening 6.
  • the valve body 10 has carried out a movement away from the discharge opening 6, as a result of which the sealing surface 23 has lifted off.
  • the medium in the pressure chamber 19 then presses out of the discharge opening 6 through the chamber 28 formed between the head end of the valve body 10 and the front end 13 of the discharge nozzle 5.
  • the chamber 28 is preferably a swirl chamber.
  • the discharge amount is not limited to the volume of the pressure chamber 19, since medium is conveyed and discharged via the passage channel 21 up to the end of a pump or pressure stroke.
  • the opening characteristic is determined by the transmission ratio of the projected areas F1 and F2, F1 being determined by the valve seat 15 for the lower piston end 17 and its diameter, while F2 is determined by the pressure chamber 19 and the diameter of the intermediate valve disk 18.
  • F3 determines the opening width of the discharge opening 6 in the area of the sealing surface 23 at the upper piston end of the valve body 10.
  • the compression spring 20 is inserted into the cylinder chamber 12 and is supported on the one hand on an underside of the intermediate valve disk 18 and on a shoulder 27 of the cylinder chamber 12 adjacent to the valve seat 15.
  • the valve body 10 is axially displaceable against the spring force of the compression spring 20 to open and close the upper valve seat 14.
  • the axial stroke can be limited by a spring compression and the resulting increasing spring force and / or by a stop that can be provided on the lower valve seat 15 .
  • the inner sleeve 7 is fixedly seated in the discharge nozzle 5, it being possible for the attachment to be detachable via a snap connection.
  • the discharge nozzle 5 has finger support surfaces 25 for manual actuation with the application of actuating forces on the counterpart 4.
  • the opening width of the channel 26 is selectable and can be adapted to the desired delivery rate using inserts.
  • the channels 26, 8 and 21 are preferably placed one above the other along a central axis.
  • the discharge nozzle 5 has the shape of a nasal olive in order to be able to be placed on the counterpart 4 as a nose adapter.
  • the discharge nozzle 5 can have other outer contours.
  • FIGS. 4 to 6 show a second embodiment of the fluid discharge head 1, which differs from the first embodiment described above in that the socket 24 is formed here on an inserted component 29 which is fixed between the inner sleeve 7 and the upper end 13 of the discharge nozzle 5.
  • the component 29 can be provided with legs 30 in the manner of a spider, which can serve for positional positioning on the inner sleeve 7.
  • swirl channels 31 can be formed on the bushing integrated in the component 29. A selectable spray pattern can be given to the medium emerging from the chamber 28 via the swirl channels 31.
  • the second exemplary embodiment differs from the first exemplary embodiment in that the media channel 8 connects to a discharge section 26 in the form of a media chamber which is shut off or secured against a backflow of medium via a valve, in particular a ball valve 32.
  • the fluid discharge head 1 according to the invention can be combined with a large number of different discharge and conveying systems 33.
  • a fluid discharge head 1 is provided which can be tested for leaks on the assembly line.
  • This fluid discharge head enables various ways of the pressure drop to be checked. This enables a complete leak test.
  • a fluid discharge head is provided with a discharge nozzle 5 having a discharge opening 6, in which an inner sleeve 7 is arranged, which has a media channel 8 and receives a spring-loaded valve body 10 which automatically closes the discharge opening 6 and which is an axially displaceable piston with an upper 14 and a
  • the lower valve seat 15 for the piston ends 16, 17 is arranged in a cup-shaped end of the inner sleeve 7.
  • the cup-shaped end 11 forms a cylinder chamber 12 for the valve body 10 with an inner passage 21, and the cup-shaped end 11 has a wall opening 42 between the cylinder chamber 12 and an interior 43 of the discharge nozzle 5.
  • the cup-shaped end 11 has a wall opening 42 between the cylinder chamber 12 and an interior 43 of the discharge nozzle 5.
  • Fig. 2 shows the seal points that can be checked and the possible paths for the pressure drop V1, V2 and V3 in the event of leaks.
  • an air pressure P is applied in the direction of the media guide 47 (cf. Fig. 7 ) created. If the intermediate valve disk 18 does not seal against the upper valve seat 14 and / or the valve seat 15 does not seal, air penetrates through the wall opening 42 into the interior 43 and can be measured as a pressure drop V2. Leaks in the area of the valve seat 14 can be measured as a pressure drop V1. Leaks between the inner sleeve 7 and the discharge nozzle 5 can be measured as a pressure drop V3.
  • the fluid discharge head 1 also has an outer cam 44 at the cup-shaped end 11, which cooperates as a stop with a rib 45 on an inner wall 48 of the discharge nozzle 5 when the inner sleeve 7 moves axially upward.
  • the discharge nozzle 5 which serves to forward the fluid discharged from the media container, connects with its media channel 8 to a discharge section 26 in the form of a discharge channel of the counterpart 4.
  • the opening width of the channel 26 is selectable and can be adapted to the desired delivery rate using inserts.
  • the channels 26, 8 and 21 are preferably placed one above the other along a central axis.
  • the discharge nozzle 5 here has the shape of a nasal olive in order to be able to be placed on the counterpart 4 as a nose adapter.
  • the discharge nozzle 5 can have other outer contours.

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Description

Die Erfindung betrifft einen Fluidaustragkopf nach dem Oberbegriff des Anspruchs 1.The invention relates to a fluid discharge head according to the preamble of claim 1.

Siehe als nächtliegender Stand der Technik US 6062 433 bzw. FR 2887232 .See as a nightly state of the art US 6062 433 or. FR 2887232 .

Aus WO 2007/009617 A1 ist ein Fluidaustragkopf mit einem eine Austragöffnung aufweisenden Austragstutzen, der eine Innenhülse aufnimmt, bekannt. In der Innenhülse ist ein Innenkörper angeordnet, der einen Auslasskanal begrenzt und ein Verbindungsglied zur Verbindung mit dem Gegenstück einer Austragvorrichtung aufweist. Die Innenhülse weist stirnseitig benachbart zur Austragöffnung eine Dichtfläche auf, gegen die ein am Innenkörper befindlicher, den Auslasskanal verschließender Ventilstopfen federvorgespannt ist. In den Austragkopf ist damit ein Ventil integriert, bei dem der Ventilverschluss durch eine Relativbewegung bei Betätigung durch den Anwender realisiert wird. Ein solches Ventil ist klein dimensionierbar. Durch die Rücksaugungsproblematik des Fluidaustragkopfes ist jedoch die Sicherung gegen das Eindringen von Keimen und Bakterien nicht ausreichend gegeben. Damit keine Keime oder sonstige Verunreinigungen durch die Austragöffnung in das System eindringen können, kann deshalb die Verwendung oligodynamischer Substanzen erforderlich sein. Die Verwendung solcher oligodynamischen Substanzen bei Einsatz konservierungsmittelfreier Medien ist nachteilig.Out WO 2007/009617 A1 a fluid discharge head with a discharge connection having a discharge opening which receives an inner sleeve is known. In the inner sleeve, an inner body is arranged which delimits an outlet channel and has a connecting member for connection to the counterpart of a discharge device. The inner sleeve has a sealing surface on the front side, adjacent to the discharge opening, against which a valve plug located on the inner body and closing the outlet channel is spring-preloaded. A valve is thus integrated into the discharge head, in which the valve closure is realized by a relative movement when actuated by the user. Such a valve can be made small. Due to the back suction problem of the fluid discharge head, however, there is insufficient protection against the ingress of germs and bacteria. The use of oligodynamic substances may therefore be necessary so that no germs or other impurities can penetrate into the system through the discharge opening. The use of such oligodynamic substances when using preservative-free media is disadvantageous.

Aufgabe der Erfindung ist es daher, einen Fluidaustragkopf zu schaffen, der einen verbesserten Ventilschluss erlaubt.The object of the invention is therefore to create a fluid discharge head which allows improved valve closure.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1.

Hierdurch wird ein Fluidaustragkopf mit einem Ventilschluss geschaffen, bei dem die Rücksaugungsproblematik beim Schließen des Ventils durch ein Überdruckventil eliminiert wird. Ein blitzartiges Verschließen direkt nach einem Sprühstoß gewährleistet, dass weder Keime noch sonstige Verunreinigungen durch die Medienaustrittsöffnung in den Fluidaustragkopf eindringen können. Die Kraft zur Öffnung des Ventils wird über das in den Austragkopf geförderte Medium direkt aufgebracht. Ein einstellbarer Mediendruck öffnet den federbelasteten Ventilverschluss durch Bewegen des Ventilkörpers gegen eine Federkraft. Das mittels einer Austragvorrichtung in den Fluidaustragkopf geförderte Medium wird dabei in einen geschlossenen und abgedichteten Raum der Zylinderkammer geleitet, aus der der Medienauslass angeströmt wird. Die Kammer stellt eine Medienmenge am Medienauslass an, deren Medienoberfläche in Verbindung mit dem Medienvordruck dem Eindringen von Bakterien und Verunreinigungen entgegensteht. Eine kleine Dimensionierung des Ventilverschlusses ist möglich.This creates a fluid discharge head with a valve closure in which the back suction problem when closing the valve is eliminated by an overpressure valve. A lightning-like closure immediately after a burst of spray ensures that neither germs nor other contaminants can penetrate through the media outlet opening into the fluid discharge head. The force to open the valve is applied directly via the medium conveyed into the discharge head. An adjustable medium pressure opens the spring-loaded valve closure by moving the valve body against a spring force. The medium conveyed into the fluid discharge head by means of a discharge device is directed into a closed and sealed space of the cylinder chamber from which the media outlet flows. The chamber supplies a quantity of media at the media outlet, the media surface of which, in conjunction with the media pre-pressure, prevents the ingress of bacteria and contaminants. A small dimensioning of the valve closure is possible.

Der Zwischenventilteller, auf den die Feder wirkt, um den Ventilkörper in den oberen Ventilsitz zu pressen, besitzt vorzugsweise eine Dichtleiste zum bodenseitigen Abdichten der Zylinderkammer. Bei hinreichendem Mediendruck in der Zylinderkammer, dessen Kammerboden den Zwischenventilteller bildet, hebt der obere Ventilsitz ab, wenn die durch den Medienvordruck hervorgerufene Kraft auf den Zwischenventilteller größer ist als die zuhaltende Federkraft. Durch das Übersetzungsverhältnis der projizierten Flächen und des ansteigenden Drucks innerhalb der Zylinderkammer kann auf das Öffnungs- und Schließverhalten Einfluss genommen werden.The intermediate valve plate, on which the spring acts to press the valve body into the upper valve seat, preferably has a sealing strip for sealing the cylinder chamber on the bottom. When there is sufficient media pressure in the cylinder chamber, the chamber bottom of which forms the intermediate valve plate, the upper valve seat lifts off when the force on the intermediate valve plate caused by the medium pressure is greater than the spring force to be held. The opening and closing behavior can be influenced by the transmission ratio of the projected areas and the increasing pressure within the cylinder chamber.

Der untere Ventilsitz hat vorzugsweise die Funktion einer Stopfbuchsendichtung für den Medienkanal, an der sich das bewegte untere Ende des Ventilkörpers abdichtend anlegt.The lower valve seat preferably has the function of a stuffing box seal for the media channel, against which the moving lower end of the valve body rests in a sealing manner.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further refinements of the invention can be found in the following description and the subclaims.

Die Erfindung wird nachstehend anhand der in den beigefügten Abbildungen dargestellten Ausführungsbeispiele näher erläutert.

  • Fig. 1 zeigt schematisch im Schnitt einen Fluidaustragkopf gemäß einem ersten Ausführungsbeispiel,
  • Fig. 2 zeigt schematisch den Ventilverschluss des Fluidaustragkopfes gemäß Fig. 1 in vergrößerter Darstellung,
  • Fig. 3 zeigt den Fluidaustragkopf gemäß Fig. 2 mit geöffnetem Ventilverschluss,
  • Fig. 4 zeigt schematisch im Schnitt einen Fluidaustragkopf gemäß einem zweiten Ausführungsbeispiel,
  • Fig. 5 zeigt den Fluidaustragkopf gemäß Fig. 4 mit geöffnetem Ventilverschluss,
  • Fig. 6 zeigt schematisch eine Draufsicht des Fluidaustragkopfes gemäß Fig. 4 mit teilweise entferntem Austragstutzen,
  • Fig. 7 zeigt schematisch im Schnitt einen Fluidaustragkopf gemäß einem dritten Ausführungsbeispiel,
  • Fig. 8 zeigt schematisch den Fluidaustragkopf gemäß Fig. 7 mit möglichen Wegen des Druckabfalls.
The invention is explained in more detail below with reference to the exemplary embodiments shown in the accompanying figures.
  • Fig. 1 shows schematically in section a fluid discharge head according to a first embodiment,
  • Fig. 2 shows schematically the valve closure of the fluid discharge head according to FIG Fig. 1 in an enlarged view,
  • Fig. 3 shows the fluid discharge head according to FIG Fig. 2 with open valve closure,
  • Fig. 4 shows schematically in section a fluid discharge head according to a second embodiment,
  • Fig. 5 shows the fluid discharge head according to FIG Fig. 4 with open valve closure,
  • Fig. 6 shows schematically a plan view of the fluid discharge head according to FIG Fig. 4 with partially removed discharge nozzle,
  • Fig. 7 shows schematically in section a fluid discharge head according to a third embodiment,
  • Fig. 8 shows schematically the fluid discharge head according to FIG Fig. 7 with possible ways of pressure drop.

Fig. 1 bis Fig. 3 zeigen einen Fluidaustragkopf 1 zur Verwendung mit einer Austragvorrichtung 2, wobei die Austragvorrichtung 2 einen nicht dargestellten Mediumspeicher für Fluid umfasst, in dem das Medium unter Druck gestellt ist oder aus dem das Medium über eine Medienpumpe 3, insbesondere eine Schubkolbenpumpe, ausgetragen wird. Die Austragvorrichtung 2 weist ein Gegenstück 4 auf, an dem der Fluidaustragkopf 1 anbringbar ist. Die Austragvorrichtung 2 mit aufgesetztem Fluidaustragkopf 1 bilden einen Spender für insbesondere flüssige Medien. FIGS. 1 to 3 show a fluid discharge head 1 for use with a discharge device 2, wherein the discharge device 2 comprises a medium reservoir (not shown) for fluid in which the medium is pressurized or from which the medium is discharged via a media pump 3, in particular a thrust piston pump. The discharge device 2 has a counterpart 4 to which the fluid discharge head 1 can be attached. The discharge device 2 with attached fluid discharge head 1 form a dispenser for, in particular, liquid media.

Der Fluidaustragkopf 1 und die Austragvorrichtung 2 sind zur Austragsbetätigung unter Verkürzung des Spenders axial gegeneinander bewegbar. Bei Freigabe einer Betätigungskraft kehren sie durch eine Feder F in entgegengesetzter Richtung zur Ausgangsstellung gemäß Fig. 1 zurück.The fluid discharge head 1 and the discharge device 2 can be moved axially relative to one another to actuate the discharge while shortening the dispenser. When an actuating force is released, a spring F causes them to return in the opposite direction to the starting position according to FIG Fig. 1 back.

Der Fluidaustragkopf 1 umfasst einen Austragstutzen 5 mit einer Austragöffnung 6, die hier stirnseitig am Austragstutzen 5 vorgesehen ist. Der Austragstutzen 5 nimmt eine Innenhülse 7 auf, die einen Medienkanal 8 begrenzt, der an einen Austragabschnitt 26 einer Medienführung 34 in Form von aneinander anschließenden und innerhalb des Fluidaustragkopfes 1 liegenden Kanalabschnitten und/oder Medienräumen anschließt.The fluid discharge head 1 comprises a discharge connection 5 with a discharge opening 6, which is provided here on the front side on the discharge connection 5. The discharge nozzle 5 receives an inner sleeve 7 which delimits a media channel 8 which connects to a discharge section 26 of a media guide 34 in the form of adjoining channel sections and / or media spaces located within the fluid discharge head 1.

Die Innenhülse 7 kann ferner ein Verbindungsglied 9 zur Verbindung mit dem Gegenstück 4 der Austragvorrichtung 2 aufweisen. Die Innenhülse 7 ist an ihrem der Austragöffnung 6 zugewandten Ende 11 topfförmig ausgebildet zur Ausbildung einer Zylinderkammer 12 in Verbindung mit dem stirnseitigen Ende 13 des Austragstutzens 5, das die Austragöffnung 6 aufweist. Zum Verschließen der Austragöffnung 6 nimmt die Innenhülse 7 einen die Austragöffnung 6 selbsttätig schließenden federbelasteten Ventilkörper 10 auf.The inner sleeve 7 can also have a connecting member 9 for connection to the counterpart 4 of the discharge device 2. The inner sleeve 7 is pot-shaped at its end 11 facing the discharge opening 6 in order to form a cylinder chamber 12 in connection with the front end 13 of the discharge connection 5, which has the discharge opening 6. To close the discharge opening 6, the inner sleeve 7 receives a spring-loaded valve body 10 which automatically closes the discharge opening 6.

Der Ventilkörper 10 ist als zylindrischer Kolben ausgebildet, der in der von der Innenhülse 7 kopfseitig gebildeten Zylinderkammer 12 axial verschiebbar ist. Der bewegbare Ventilkörper 10 unterteilt die Zylinderkammer 12 in einen oberen und einen unteren Kammerabschnitt. Der obere Kammerabschnitt bildet eine Druckkammer 19, die an den Medienkanal 8 angeschlossen und zur Austragöffnung 6 hin geöffnet und geschlossen werden kann. Der untere Kammerabschnitt dient zur Aufnahme eines Federelementes, insbesondere einer Druckfeder 20, zur Druckbelastung des Ventilkörpers 10, damit dieser mit einer Vorspannkraft als federbelasteter Ventilkörper 10 die Austragsöffnung 6 verschließt.The valve body 10 is designed as a cylindrical piston which is axially displaceable in the cylinder chamber 12 formed by the inner sleeve 7 on the head side. The movable valve body 10 divides the cylinder chamber 12 into an upper and a lower chamber section. The upper chamber section forms a pressure chamber 19, which is connected to the media channel 8 and can be opened and closed towards the discharge opening 6. The lower chamber section serves to accommodate a spring element, in particular a compression spring 20, for pressure loading of the valve body 10 so that it closes the discharge opening 6 with a pretensioning force as a spring-loaded valve body 10.

Für den Ventilkörper 10 ist ein oberer Ventilsitz 14 und ein unterer Ventilsitz 15 vorgesehen, die zugleich als Führungslager für die Kolbenenden 16, 17 dienen können. Vorzugsweise dient mindestens einer der beiden Ventilsitze 14, 15 als Führungslager. Der Kolben des Ventilkörpers 10 weist einen Zwischenventilteller 18 auf, der einen Kammerboden der an den Medienkanal 8 angeschlossenen Druckkammer 19 bildet. Der Zwischenventilteller 18 dichtet die Druckkammer 19 zum oberen Ventilsitz 14 ab. Der Zwischenventilteller 18 dient ferner zur Führung der Bewegung des Ventilkörpers 10 in der Zylinderkammer 12. Der Zwischenventilteller 18 ist als umlaufende Dichtungslippe ausgebildet, die den Ventilkörper 10 in der Zylinderkammer 12 bei seiner Auf- und Abwärtsbewegung führt. Der Zwischenventilteller 18 bildet einen Kammerboden der Druckkammer 19, der gegenüber der Austragöffnung 6 axial bewegbar ist, und zwar durch Bewegung des Ventilkörpers 10. Der Volumeninhalt der Druckkammer 19 variiert folglich, wobei die Volumenvergrößerung bei Öffnung der Austragöffnung 6 durch den Mediumdruck im Durchlasskanal 21 ausgefüllt wird, so dass keine Keime eindringen können. Die Verkleinerung des Volumeninhalts der Druckkammer 19 beim Schließen der Austragöffnung 6 bewirkt einen Mediumrestschub, der das Eindringen von Keimen verhindert.For the valve body 10, an upper valve seat 14 and a lower valve seat 15 are provided, which can also serve as guide bearings for the piston ends 16, 17. At least one of the two valve seats 14, 15 preferably serves as a guide bearing. The piston of the valve body 10 has an intermediate valve disk 18 which forms a chamber bottom of the pressure chamber 19 connected to the media channel 8. The intermediate valve disk 18 seals the pressure chamber 19 from the upper valve seat 14. The intermediate valve disk 18 also serves to guide the movement of the valve body 10 in the cylinder chamber 12. The intermediate valve disk 18 is designed as a circumferential sealing lip which guides the valve body 10 in the cylinder chamber 12 during its upward and downward movement. The intermediate valve plate 18 forms a chamber bottom of the pressure chamber 19, which is axially movable with respect to the discharge opening 6, namely by moving the valve body 10. The volume of the pressure chamber 19 consequently varies, with the increase in volume when the discharge opening 6 is opened by the medium pressure in the passage 21 so that no germs can penetrate. The reduction in the volume of the pressure chamber 19 when the discharge opening 6 is closed causes a residual medium thrust which prevents the penetration of germs.

Zum Öffnen des oberen Ventilsitzes 14 ist in der Druckkammer 19 ein Medienaustragdruck einstellbar, der höher ist als eine den Ventilkörper 10 zuhaltende Federkraft der Druckfeder 20. Die Fig. 1 und Fig. 2 zeigen eine durch den Ventilkörper 10 geschlossene Austragöffnung 6.To open the upper valve seat 14, a media discharge pressure can be set in the pressure chamber 19 which is higher than a spring force of the compression spring 20 that closes the valve body 10 Fig. 1 and Fig. 2 show a discharge opening 6 closed by the valve body 10.

Der Ventilkörper 10 wird von Medium durchströmt, wozu der Ventilkörper 10 einen Durchlasskanal 21 aufweist, der den Medienkanal 8 mit der Druckkammer 19 verbindet. Vorzugsweise ist der Durchlasskanal 21 zentrisch durch den Ventilkörper 10 geführt. Der Durchlasskanal 21 wird von einem Steigrohrabschnitt gebildet, der auslassseitig vorzugsweise in einer Ringnut 22 endet, die den Durchlasskanal 21 in die Druckkammer 19 überleitet.The valve body 10 is flowed through by medium, for which purpose the valve body 10 has a passage channel 21 which connects the media channel 8 with the pressure chamber 19. The passage channel 21 is preferably guided centrally through the valve body 10. The passage 21 is formed by a riser pipe section, which preferably ends on the outlet side in an annular groove 22, which transfers the passage 21 into the pressure chamber 19.

Der untere Ventilsitz 15 hat vorzugsweise die Funktion einer Stopfbuchsendichtung, in der ein tüllenartig verbreitertes Kolbenende 17 des Ventilkörpers 10 abdichtend anliegt, und zwar bei einer Abwärts- und Aufwärtsbewegung des Ventilkörpers 10.The lower valve seat 15 preferably has the function of a stuffing box seal in which a spout-like widened piston end 17 of the valve body 10 rests in a sealing manner during a downward and upward movement of the valve body 10.

Der obere Ventilsitz 14 umfasst vorzugsweise eine geschlitzte Buchse 24, die das obere Kolbenende 16 bei der Öffnungs- und Schließbewegung führen kann, andererseits die Anströmung der Austragöffnung 6 durch Buchsenschlitze erlaubt, wenn das obere Kolbenende 16 mit einer vorzugsweise gerundeten Dichtfläche 23 abhebt und die Austragöffnung 6 gegenüber der Druckkammer 19 freigibt. Die Austragöffnung 6 kann eine oder mehrere Öffnungen aufweisen, je nachdem, welches Sprühbild oder Strahlbild erwünscht ist. Die Buchse 24 kann eine Drallkammer ausbilden.The upper valve seat 14 preferably comprises a slotted bushing 24, which can guide the upper piston end 16 during the opening and closing movement, on the other hand allows the flow to the discharge opening 6 through bushing slots when the upper piston end 16 lifts with a preferably rounded sealing surface 23 and the discharge opening 6 relative to the pressure chamber 19 releases. The discharge opening 6 can have one or more openings, depending on which spray pattern or jet pattern is desired. The bush 24 can form a swirl chamber.

Die Buchse 24 ist vorzugsweise an dem Austragstutzen 5 ausgebildet und dazu freistehend ausgebildet. Die Druckkammer 19 umgibt die Austragöffnung 6 mit einem Anströmkessel an Fluid, der zwischen dem Zwischenventilteller 18 und dem oberen Ventilsitz 14 eine Standhöhe an Fluid als Anströmreservoir benachbart zur Austragöffnung 6 bereitstellt. Vor dem Abheben des Ventilkörpers 10 von dem oberen Ventilsitz 14 steht das Medium mit einem hohen Anfangsdruck an. Dieser Vordruck in der Druckkammer 19 ist höher als der Umgebungsdruck, so dass beim Freigeben der Austragöffnung 6 das anstehende Medium unmittelbar austritt. Der Vordruck wird vorzugsweise in einem Bereich zwischen 1,5 und 2,3 bar eingestellt.The socket 24 is preferably formed on the discharge nozzle 5 and is free-standing for this purpose. The pressure chamber 19 surrounds the discharge opening 6 with an inflow tank of fluid which, between the intermediate valve disk 18 and the upper valve seat 14, provides a level of fluid as an inflow reservoir adjacent to the discharge opening 6. Before the valve body 10 is lifted off the upper valve seat 14, the medium is present with a high initial pressure. This pre-pressure in the pressure chamber 19 is higher than the ambient pressure, so that when the discharge opening 6 is opened, the pending medium emerges immediately. The pre-pressure is preferably set in a range between 1.5 and 2.3 bar.

Fig. 3 zeigt die freigegebene Austragöffnung 6. Der Ventilkörper 10 hat dazu eine Bewegung weg von der Austragöffnung 6 durchgeführt, wodurch ein Abheben der Dichtfläche 23 eingetreten ist. Das in der Drucckammer 19 anstehende Medium drückt dann durch die zwischen dem Kopfende des Ventilkörpers 10 und dem stirnseitigen Ende 13 des Austragstutzens 5 gebildeten Kammer 28 aus der Austragöffnung 6. Die Kammer 28 ist vorzugsweise eine Drallkammer. Die Austragmenge ist dabei nicht auf den Volumeninhalt der Druckkammer 19 beschränkt, da über den Durchlasskanal 21 Medium bis zum Ende eines Pumpen- oder Druckhubs gefördert und ausgetragen wird. Fig. 3 shows the released discharge opening 6. For this purpose, the valve body 10 has carried out a movement away from the discharge opening 6, as a result of which the sealing surface 23 has lifted off. The medium in the pressure chamber 19 then presses out of the discharge opening 6 through the chamber 28 formed between the head end of the valve body 10 and the front end 13 of the discharge nozzle 5. The chamber 28 is preferably a swirl chamber. The discharge amount is not limited to the volume of the pressure chamber 19, since medium is conveyed and discharged via the passage channel 21 up to the end of a pump or pressure stroke.

Die Öffnungscharakteristik wird bestimmt durch das Übersetzungsverhältnis der projizierten Flächen F1 und F2, wobei F1 durch den Ventilsitz 15 für das untere Kolbenende 17 und dessen Durchmesser bestimmt wird, während F2 durch die Druckkammer 19 und den Durchmesser des Zwischenventiltellers 18 bestimmt wird. F3 bestimmt die Öffnungsweite der Austragöffnung 6 im Bereich der Dichtfläche 23 am oberen Kolbenende des Ventilkörpers 10.The opening characteristic is determined by the transmission ratio of the projected areas F1 and F2, F1 being determined by the valve seat 15 for the lower piston end 17 and its diameter, while F2 is determined by the pressure chamber 19 and the diameter of the intermediate valve disk 18. F3 determines the opening width of the discharge opening 6 in the area of the sealing surface 23 at the upper piston end of the valve body 10.

Die Druckfeder 20 ist eingesetzt in die Zylinderkammer 12 und stützt sich ab einerseits an einer Unterseite des Zwischenventiltellers 18 und einer Schulter 27 der Zylinderkammer 12 benachbart zum Ventilsitz 15.The compression spring 20 is inserted into the cylinder chamber 12 and is supported on the one hand on an underside of the intermediate valve disk 18 and on a shoulder 27 of the cylinder chamber 12 adjacent to the valve seat 15.

Der Ventilkörper 10 ist entgegen der Federkraft der Druckfeder 20 axial verschiebbar zum Öffnen und Schließen des oberen Ventilsitzes 14. Der axiale Hub ist begrenzbar durch eine Federkompression und der dadurch ansteigenden Federkraft und/oder durch einen Anschlag, der an dem unteren Ventilsitz 15 vorgesehen sein kann.The valve body 10 is axially displaceable against the spring force of the compression spring 20 to open and close the upper valve seat 14. The axial stroke can be limited by a spring compression and the resulting increasing spring force and / or by a stop that can be provided on the lower valve seat 15 .

Die Innenhülse 7 sitzt fest angeordnet in dem Austragstutzen 5, wobei die Befestigung lösbar über eine Schnappverbindung erfolgen kann.The inner sleeve 7 is fixedly seated in the discharge nozzle 5, it being possible for the attachment to be detachable via a snap connection.

Der Austragstutzen 5 weist für eine manuelle Betätigung unter Aufbringung von Betätigungskräften auf das Gegenstück 4 Fingerauflageflächen 25 auf. Der Austragstutzen 5, der zur Weiterleitung des aus dem Medienbehälter ausgetragenen Fluids dient, schließt mit seinem Medienkanal 8 an einen Austragabschnitt 26 in Form eines Austragkanals des Gegenstücks 4 an. Die Öffnungsweite des Kanals 26 ist wählbar und kann über Einsatzstücke an die gewünschte Fördermenge angepasst werden. Die Kanäle 26, 8 und 21 sind vorzugsweise entlang einer zentralen Achse übereinandergesetzt.The discharge nozzle 5 has finger support surfaces 25 for manual actuation with the application of actuating forces on the counterpart 4. The discharge nozzle 5, which serves to forward the fluid discharged from the media container, connects with its media channel 8 to a discharge section 26 in the form of a discharge channel of the counterpart 4. The opening width of the channel 26 is selectable and can be adapted to the desired delivery rate using inserts. The channels 26, 8 and 21 are preferably placed one above the other along a central axis.

Der Austragstutzen 5 besitzt hier die Form einer Nasenolive, um als Nasenadapter auf das Gegenstück 4 aufgesetzt werden zu können. Für andere Anwendungszwecke kann der Austragstutzen 5 andere Außenkonturen besitzen.The discharge nozzle 5 has the shape of a nasal olive in order to be able to be placed on the counterpart 4 as a nose adapter. For other purposes of use, the discharge nozzle 5 can have other outer contours.

Fig. 4 bis Fig. 6 zeigen ein zweites Ausführungsbeispiel des Fluidaustragkopfes 1, das sich von dem zuvor beschriebenen ersten Ausführungsbeispiel dadurch unterscheidet, dass die Buchse 24 hier an einem eingesetzten Bauteil 29 ausgebildet ist, das zwischen der Innenhülse 7 und dem oberen Ende 13 des Austragstutzens 5 fixiert ist. Dazu kann das Bauteil 29 spinnenartig mit Beinen 30 versehen sein, die zur Lagepositionierung an der Innenhülse 7 dienen können. Ferner können an der in das Bauteil 29 integrierten Buchse 24 Drallkanäle 31 ausgebildet sein. Über die Drallkanäle 31 kann dem aus der Kammer 28 austretenden Medium ein wählbares Sprühbild verliehen werden. FIGS. 4 to 6 show a second embodiment of the fluid discharge head 1, which differs from the first embodiment described above in that the socket 24 is formed here on an inserted component 29 which is fixed between the inner sleeve 7 and the upper end 13 of the discharge nozzle 5. For this purpose, the component 29 can be provided with legs 30 in the manner of a spider, which can serve for positional positioning on the inner sleeve 7. Furthermore, swirl channels 31 can be formed on the bushing integrated in the component 29. A selectable spray pattern can be given to the medium emerging from the chamber 28 via the swirl channels 31.

Weiterhin unterscheidet sich das zweite Ausführungsbeispiel von dem ersten Ausführungsbeispiel dadurch, dass der Medienkanal 8 an einen Austragabschnitt 26 in Form einer Medienkammer anschließt, die über ein Ventil, insbesondere ein Kugelventil 32, gegenüber einem Rückfluss von Medium abgesperrt bzw. gesichert ist. Der erfindungsgemäße Fluidaustragkopf 1 ist dabei mit einer Vielzahl verschiedener Austrag- und Fördersysteme 33 kombinierbar.Furthermore, the second exemplary embodiment differs from the first exemplary embodiment in that the media channel 8 connects to a discharge section 26 in the form of a media chamber which is shut off or secured against a backflow of medium via a valve, in particular a ball valve 32. The fluid discharge head 1 according to the invention can be combined with a large number of different discharge and conveying systems 33.

Im Übrigen gelten die vorstehenden Ausführungen zum ersten Ausführungsbeispiel für das zweite Ausführungsbeispiel entsprechend.Otherwise, the above statements on the first exemplary embodiment apply accordingly to the second exemplary embodiment.

Gemäß einem dritten in Fig. 7 und Fig. 8 dargestellten Ausführungsbeispiel ist ein Fluidaustragkopf 1 vorgesehen, der auf der Montagelinie auf Undichtigkeiten getestet werden kann. Dieser Fluidaustragkopf ermöglicht eine Überprüfung verschiedener Wege des Druckabfalls. Eine vollständige Dichtigkeitsprüfung ist dadurch möglich.According to a third in Fig. 7 and Fig. 8 A fluid discharge head 1 is provided which can be tested for leaks on the assembly line. This fluid discharge head enables various ways of the pressure drop to be checked. This enables a complete leak test.

Hierzu ist vorgesehen ein Fluidaustragkopf mit einem eine Austragöffnung 6 aufweisenden Austragstutzen 5, in dem eine Innenhülse 7 angeordnet ist, die einen Medienkanal 8 aufweist und einen die Austragöffnung 6 selbsttätig schließenden federbelasteten Ventilkörper 10 aufnimmt, der als axial verschiebbarer Kolben mit einem oberen 14 und einem unterem Ventilsitz 15 für die Kolbenenden 16, 17 in einem topfförmigen Ende der Innenhülse 7 angeordnet ist. Das topfförmige Ende 11 bildet eine Zylinderkammer 12 für den Ventilkörper 10 mit einem inneren Durchlasskanal 21, und das topfförmige Ende 11 weist eine Wandöffnung 42 zwischen der Zylinderkammer 12 und einem Innenraum 43 des Austragstutzens 5 auf.For this purpose, a fluid discharge head is provided with a discharge nozzle 5 having a discharge opening 6, in which an inner sleeve 7 is arranged, which has a media channel 8 and receives a spring-loaded valve body 10 which automatically closes the discharge opening 6 and which is an axially displaceable piston with an upper 14 and a The lower valve seat 15 for the piston ends 16, 17 is arranged in a cup-shaped end of the inner sleeve 7. The cup-shaped end 11 forms a cylinder chamber 12 for the valve body 10 with an inner passage 21, and the cup-shaped end 11 has a wall opening 42 between the cylinder chamber 12 and an interior 43 of the discharge nozzle 5.

Das topfförmige Ende 11 besitzt eine Wandöffnung 42 zwischen der Zylinderkammer 12 und einem Innenraum 43 des Austragstutzens 5. Fig. 2 zeigt die überprüfbaren Dichtstellen und die möglichen Wege des Druckabfalls V1, V2 und V3 bei Undichtigkeiten. Dazu wird ein Luft-Druck P in Richtung der Medienführung 47 (vgl. Fig. 7) angelegt. Wenn der Zwischenventilteller 18 zum oberen Ventilsitz 14 nicht abdichtet und/oder der Ventilsitz 15 nicht dichtet, dringt Luft durch die Wandöffnung 42 in den Innenraum 43 und ist als Druckabfall V2 messbar. Undichtigkeiten im Bereich des Ventilsitzes 14 sind als Druckabfall V1 messbar. Undichtigkeiten zwischen der Innenhülse 7 und dem Austragstutzen 5 sind als Druckabfall V3 messbar.The cup-shaped end 11 has a wall opening 42 between the cylinder chamber 12 and an interior 43 of the discharge nozzle 5. Fig. 2 shows the seal points that can be checked and the possible paths for the pressure drop V1, V2 and V3 in the event of leaks. For this purpose, an air pressure P is applied in the direction of the media guide 47 (cf. Fig. 7 ) created. If the intermediate valve disk 18 does not seal against the upper valve seat 14 and / or the valve seat 15 does not seal, air penetrates through the wall opening 42 into the interior 43 and can be measured as a pressure drop V2. Leaks in the area of the valve seat 14 can be measured as a pressure drop V1. Leaks between the inner sleeve 7 and the discharge nozzle 5 can be measured as a pressure drop V3.

Der Fluidaustragkopf 1 weist ferner an dem topfförmigen Ende 11 einen Außennocken 44 auf, der als Anschlag mit einer Rippe 45 an einer Innenwandung 48 des Austragstutzens 5 bei einer axial aufwärts gerichteten Bewegung der Innenhülse 7 zusammenwirkt.The fluid discharge head 1 also has an outer cam 44 at the cup-shaped end 11, which cooperates as a stop with a rib 45 on an inner wall 48 of the discharge nozzle 5 when the inner sleeve 7 moves axially upward.

Der Austragstutzen 5, der zur Weiterleitung des aus dem Medienbehälter ausgetragenen Fluids dient, schließt mit seinem Medienkanal 8 an einen Austragabschnitt 26 in Form eines Austragkanals des Gegenstücks 4 an. Die Öffnungsweite des Kanals 26 ist wählbar und kann über Einsatzstücke an die gewünschte Fördermenge angepasst werden. Die Kanäle 26, 8 und 21 sind vorzugsweise entlang einer zentralen Achse übereinandergesetzt.The discharge nozzle 5, which serves to forward the fluid discharged from the media container, connects with its media channel 8 to a discharge section 26 in the form of a discharge channel of the counterpart 4. The opening width of the channel 26 is selectable and can be adapted to the desired delivery rate using inserts. The channels 26, 8 and 21 are preferably placed one above the other along a central axis.

Der Austragstutzen 5 besitzt hier die Form einer Nasenolive, um als Nasenadapter auf das Gegenstück 4 aufgesetzt werden zu können. Für andere Anwendungszwecke kann der Austragstutzen 5 andere Außenkonturen besitzen.The discharge nozzle 5 here has the shape of a nasal olive in order to be able to be placed on the counterpart 4 as a nose adapter. For other purposes the discharge nozzle 5 can have other outer contours.

Im Übrigen gelten die vorstehenden Ausführungen zu dem ersten und zweiten Ausführungsbeispiel des Fluidaustragkopf hier entsprechend.Otherwise, the above statements regarding the first and second exemplary embodiments of the fluid discharge head apply here accordingly.

Claims (11)

  1. Fluid discharge head for application to a mating piece (4) of a discharge device (2) having a discharge nozzle (5) which has a discharge opening (6) and in which an inner sleeve (7) is arranged, which has a medium duct (8) and houses a spring-loaded valve body (10) automatically closing the discharge opening (6), characterized in that the medium duct (8) extends through the valve body (10) as a passage duct (21), the inner sleeve (7) has a connecting element (9) to provide a connection to the mating piece (4) and the inner sleeve is pot-shaped at its end (11) facing the discharge opening (6), in order to form a potlike cylinder chamber (12) in conjunction with the front end (13) of the discharge nozzle (5), the valve body (10) is formed as a cylindrical piston, which is axially displaceable in the cylinder chamber (12) formed by the inner sleeve (7), wherein an upper (14) and a lower valve seat (15) is provided for the piston ends (16, 17), and the valve body (10) has an intermediate valve plate (18), which forms a chamber bottom of a pressure chamber (19) connected to the medium duct (8), and, in order to open the upper valve seat (14), a medium discharge pressure which is higher than a spring force holding the valve body (10) closed is settable in the pressure chamber, for which purpose a compression spring (20) is inserted into the cylinder chamber (12) and is supported at one end on the bottom of the intermediate valve plate (18) and on a shoulder (27) of the cylinder chamber (12) adjacent to the valve seat (1) for the spring preloading of the valve body (10), the intermediate valve plate (18) seals off the pressure chamber (19) in relation to the upper valve seat (14) and the intermediate valve plate (18) is formed as a circumferential sealing lip, which guides the valve body (10) in the cylinder chamber (12) during its upward and downward movement.
  2. Fluid discharge head according to claim 1, characterized in that the lower valve seat (15) houses in a sealing manner a piston end (17) broadening in the manner of a funnel.
  3. Fluid discharge head according to claim 1 or 2, characterized in that at least one valve seat (14, 15) is formed as a guide bearing for a piston end (16, 17).
  4. Fluid discharge head according to one of claims 1 to 5, characterized in that the passage duct (21) is led centrally through the valve body (10).
  5. Fluid discharge head according to one of claims 1 to 4, characterized in that the upper valve seat (14) is formed in a bush (24).
  6. Fluid discharge head according to claim 5, characterized in that the bush (24) is formed as a slotted self-supporting bush in one piece with the discharge nozzle (5).
  7. Fluid discharge head according to claim 5, characterized in that the bush (24) is formed as an insertable component (29).
  8. Fluid discharge head according to claim 7, characterized in that the inserted component (29) is shaped spider-like with legs (30) and has swirl ducts (31) on the top side.
  9. Fluid discharge head according to one of claims 1 to 8, characterized in that the pressure chamber (19) surrounds the discharge opening (6) with an inflow chamber.
  10. Fluid discharge head according to one of claims 1 to 9, characterized in that the medium duct (8) adjoins a discharge section (26) of a medium guide (34) in the form of duct sections and/or medium spaces adjoining one another and located within the fluid discharge head (1).
  11. Fluid discharge head according to claim 10, characterized in that the medium duct (8) is connectable to a chamber-like discharge section (26) of a discharge system (33), secured against reverse flow of medium by a valve (32).
EP09761388.9A 2008-06-10 2009-05-26 Fluid discharge head Active EP2293880B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008027600A DE102008027600A1 (en) 2008-06-10 2008-06-10 Fluid discharge head for use with fluid discharge device, has valve body with intermediate valve disk that defines compartment bottom of pressure chamber, where medium discharge pressure is adjusted in chamber to open upper valve seat
DE102008027598A DE102008027598A1 (en) 2008-06-10 2008-06-10 Fluid discharge head for use with fluid discharge device, has valve body with intermediate valve disk that defines compartment bottom of pressure chamber, where medium discharge pressure is adjusted in chamber to open upper valve seat
PCT/EP2009/003721 WO2009149825A1 (en) 2008-06-10 2009-05-26 Fluid discharge head

Publications (3)

Publication Number Publication Date
EP2293880A1 EP2293880A1 (en) 2011-03-16
EP2293880B1 EP2293880B1 (en) 2016-09-28
EP2293880B2 true EP2293880B2 (en) 2021-05-05

Family

ID=40902219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09761388.9A Active EP2293880B2 (en) 2008-06-10 2009-05-26 Fluid discharge head

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US (1) US8985401B2 (en)
EP (1) EP2293880B2 (en)
JP (1) JP5458328B2 (en)
CN (1) CN102056677B (en)
BR (1) BRPI0915020B1 (en)
CA (1) CA2725608C (en)
ES (1) ES2609294T5 (en)
RU (1) RU2488448C2 (en)
WO (1) WO2009149825A1 (en)

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Also Published As

Publication number Publication date
US8985401B2 (en) 2015-03-24
CA2725608C (en) 2016-09-20
JP5458328B2 (en) 2014-04-02
US20110084100A1 (en) 2011-04-14
ES2609294T5 (en) 2021-12-01
RU2488448C2 (en) 2013-07-27
JP2011523894A (en) 2011-08-25
BRPI0915020B1 (en) 2020-02-04
WO2009149825A1 (en) 2009-12-17
ES2609294T3 (en) 2017-04-19
EP2293880A1 (en) 2011-03-16
CN102056677A (en) 2011-05-11
EP2293880B1 (en) 2016-09-28
CN102056677B (en) 2014-02-26
CA2725608A1 (en) 2009-12-17
BRPI0915020A2 (en) 2015-10-27
RU2010154455A (en) 2012-08-20

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