EP0441377B1 - Manually operated sprayer for liquids - Google Patents

Manually operated sprayer for liquids Download PDF

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Publication number
EP0441377B1
EP0441377B1 EP91101690A EP91101690A EP0441377B1 EP 0441377 B1 EP0441377 B1 EP 0441377B1 EP 91101690 A EP91101690 A EP 91101690A EP 91101690 A EP91101690 A EP 91101690A EP 0441377 B1 EP0441377 B1 EP 0441377B1
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EP
European Patent Office
Prior art keywords
housing
pump
pressure regulator
closing element
orifice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91101690A
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German (de)
French (fr)
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EP0441377A2 (en
EP0441377A3 (en
Inventor
Karl Kläger
Karl-Heinz Kläger
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.)
KLAEGER, KARL
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Individual
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Publication of EP0441377A3 publication Critical patent/EP0441377A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0037Containers
    • B05B11/0039Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/10Pump 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
    • B05B11/1001Piston pumps
    • B05B11/1009Piston pumps actuated by a lever
    • B05B11/1011Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke

Definitions

  • the invention relates to a manually operable liquid atomizer according to the type specified by the preamble of claim 1.
  • the two ring seals of the piston of the piston pump are so closely spaced apart that the mouth of the ventilation line lying in their annular space is already out of its rest position after a relatively short displacement of the piston connects to the atmosphere through the open end of the pump cylinder.
  • the connection is made via an annular space that exists between the main length of the pump piston sealed by the two ring seals against the pump chamber and the surrounding pump cylinder, so that the ventilation of the reservoir during the displacement of the pump piston caused by the handle lever against the force of the return spring is constant is mediated through this annular space.
  • the axial guidance of the pump piston on the surrounding wall of the pump cylinder is thus essentially limited only to the remaining length, which is relatively short with the two ring seals, at the piston end facing the pump chamber, so that this causes a rather unstable displacement of the piston, which tends to tilt, with a corresponding disadvantageous effect Impact on the operation of the piston pump is obtained.
  • This disadvantageous effect is particularly noticeable when the ring seals are formed as one-piece lip seals with the piston, because then such tilting movements also lead to faster wear on the relatively thin lips of the seals.
  • a liquid atomizer in which the distance between two integrally formed lip seals of the piston of a corresponding piston pump is dimensioned such that a ventilation hole designed for ventilation of the reservoir in the wall of the pump cylinder is in the rest position as well also lies in the maximum displacement position of the pump piston obtained with a limit stop in the annular space between the two lip seals.
  • a partial coverage of the inlet suction line opening into the pump chamber is obtained, so that a valve chamber upstream of the pump chamber then also has a connection to the other lip seal against the open end of the pump cylinder has sealed ventilation hole.
  • the annular space between the two ring seals is connected to the atmosphere at the same time via a ventilation groove formed in the wall of the pump cylinder in an axially parallel manner, this connection being different from that in the rest position of the pump piston, the open end of the pump cylinder sealing lip seal is released during the movement of the pump piston. With this liquid atomizer there is therefore a risk of leakage leakage through the open end of the pump cylinder.
  • the invention characterized by the claims solves the problem of designing a manually operable liquid atomizer of the type specified in such a way that greater security for leakage leakage is obtained via the open end of the pump cylinder.
  • the liquid atomizer shown in its entirety in FIG. 1 represents a further development of the atomizer according to DE-C-32 45 493, the individual parts of which are partly adopted unchanged and partly undergo an uncomplicated adaptation to the design according to the invention.
  • the use of an atomizer nozzle is provided, which, with a design according to DE-C-34 43 640, results in simple mounting on the atomizer housing.
  • the atomizer is provided for screwing to a storage container containing the liquid to be atomized by means of a union nut 2 which is freely rotatable by the atomizer housing 1.
  • a handle lever 3 is pivotally mounted on the atomizer housing 1 and bears with a projection 4 on the piston 6 of a piston pump, which piston is biased by a return spring 5.
  • the pump piston 6 can thus be displaced by the handle lever 3 against the force of the return spring 5 in a pump chamber 7 formed with the atomizer housing 1, which is sealed against an open end of the pump cylinder 10 by a piston seal designed with two lip seals 8 and 9.
  • a connection bore 11 opens with a valve chamber 12, to which a connecting line 14 leading to the reservoir is connected via an inlet check valve 13 formed with a valve ball.
  • the connecting line 14 thus forming a partial length of an inlet-suction line opening into the pump chamber 7 passes through a closure piece 15 of the storage container which can be fixed by the union nut 2, the closure piece being cylindrical overall and engaging behind a central push-through opening of the union nut with a radially projecting ring flange 16 which thus supports the union nut so that it can rotate freely.
  • an outlet pressure line 17 extends from the pump chamber 7, at the mouth of which the atomizing nozzle 18 is arranged.
  • the handle lever 3 is formed with an essentially U-shaped bearing fork 19, which has a pivot pin formed as a double pin 20, 21 at each of the two fork ends.
  • Each pivot is inserted into two axially aligned bearing bores 22 and 23 of an outer housing wall 24 and a spaced inner housing wall 25, which are thus arranged in pairs on both sides of the outlet pressure line 17 formed with the atomizer housing 1.
  • This paired arrangement is designed according to the sectional view in FIG.
  • the valve chamber 12 is formed within a hollow cylindrical housing extension 26, which is provided for a plug connection with the closure piece 15 of the storage container.
  • the housing extension 26 is surrounded by a coaxially formed second housing extension 27 with the formation of an intermediate space 28 which is dimensioned such that when a housing extension 26 is plugged onto the closure piece 15 a plug connection with an axially projecting ring flange 29 of the closure piece is obtained at the same time.
  • the plug connection provided for the ring flange 29 of the closure piece 15 is supplemented by a snap connection with the second housing attachment 27, which is formed with a catch lug 30 of the ring flange 29 and a catch hole 31 of the second housing attachment 27.
  • the snap connection primarily serves the purpose of keeping the union nut 2 freely rotatable on the closure piece in the interaction of the second housing extension 27 and the radially projecting ring flange 16 of the closure piece 15, for which purpose the central push-through opening of the union nut has a somewhat larger diameter than the axially projecting ring flange 29 having.
  • an axially parallel longitudinal groove 32 is formed, which is sealed with a press fit of the ring flange against the housing shoulder 26.
  • the longitudinal groove 32 forms a partial length of a ventilation line which, via a prechamber formed with the intermediate space 28 between the two housing attachments 26 and 27 and a ventilation bore 33 in the wall of the pump cylinder 10, connects to the annular intermediate space 34 between the two lip seals 8 and 9 of the pump piston 6 connected.
  • the longitudinal groove 32 has a connection to a bore 35 of the closure piece 15, via which a connection to the storage container can thus be established.
  • a labyrinth seal 36 with the mutual contact surfaces of the second housing extension 27 and the ring flange 29 is also formed, which press-fits the Ring flange 29 is radially preloaded with respect to the press fit supplementing a housing extension 26.
  • the intermediate space 34 formed between the two lip seals 8, 9 of the pump piston 6 is sealed in the rest position of the piston by the one lip seal 9 against the open end of the pump cylinder 10.
  • a seal against the pump chamber 7 is obtained with the other lip seal 8.
  • This double-sided seal also exists with respect to a ventilation groove 37, which is formed axially parallel with a length smaller than the distance between the two lip seals in the wall of the pump cylinder 10 and, according to the detail shown in FIG. 4, has a diffuser-like widening end 38, which with reference to the illustration in FIG. 3 on one to the ventilation hole 33 diametrically opposite point in the wall of the pump cylinder 10 is formed.
  • the other lip seal 8 maintains an unchanged seal of the intermediate space 34 and thus at the same time the ventilation hole 33 against the pump chamber 7, which on the other hand has a connection with the valve chamber 12 that is constantly maintained via the bore 11.
  • the outlet pressure line 17 is thus also continuously connected to the valve chamber 12 via the pump chamber 7.
  • an O-ring can also be provided for the sealing on these contact surfaces.
  • the lip seals 8, 9 of the pump piston 6 can also be replaced by such separate O-rings.
  • a rib can also be formed on the wall of the pump cylinder 10 in order to maintain the connection to the atmosphere outside the rest position of the pump piston.

Landscapes

  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Description

Die Erfindung bezieht sich auf einen manuell betätigbaren Flüssigkeitszerstäuber gemäß der durch den Oberbegriff des Patentanspruches 1 angegebenen Gattung.The invention relates to a manually operable liquid atomizer according to the type specified by the preamble of claim 1.

Bei einem aus der DE-C-31 04 450 bekannten Flüssigkeitszerstäuber dieser Art sind die beiden Ringdichtungen des Kolbens der Kolbenpumpe derart eng voneinander beabstandet, daß die in ihren ringförmigen Zwischenraum liegende Mündung der Belüftungsleitung bereits nach einem relativ kurzen Verschiebeweg des Kolbens aus seiner Ruheposition heraus eine Verbindung mit der Atmosphäre über das offene Ende des Pumpenzylinders erhält. Die Verbindung wird dabei über einen ringförmigen Zwischenraum hergestellt, der zwischen der durch die beiden Ringdichtungen gegen die Pumpenkammer abgedichteten Hauptlänge des Pumpenkolbens und dem umgebenden Pumpenzylinder besteht, sodaß die Belüftung des Vorratsbehälters bei der mit dem Griffhebel entgegen der Kraft der Rückstellfeder bewirkten Verschiebung des Pumpenkolbens ständig über diesen ringförmigen Zwischenraum vermittelt wird. Die axiale Führung des Pumpenkolbens an der umgebenden Wand des Pumpenzylinders ist damit im wesentlichen nur auf die mit den beiden Ringdichtungen relativ kurz bemessene Restlänge an dem der Pumpenkammer zugewandten Kolbenende beschränkt, sodaß dadurch eine ziemlich labile und zu Kippbewegungen neigende Verschiebung des Kolbens mit einer entsprechend nachteiligen Auswirkung auf die Arbeitsweise der Kolbenpumpe erhalten wird. Diese nachteilige Wirkung ist besonders dann feststellbar, wenn die Ringdichtungen als mit dem Kolben einstückige Lippendichtungen ausgebildet werden, weil dabei dann solche Kippbewegungen auch zu einem rascheren Verschleiß an den relativ dünnen Lippen der Dichtungen führen. Die Gefahr für ein Entweichen von Leckflüssigkeit über das offene Ende des Pumpenzylinders besteht dann nicht nur in der Ruheposition des Pumpenkolbens, sollte dabei über ein unbeabsichtigte Betätigung des Griffhebels eine geringfügige Axialverschiebung des Kolbens ausgelöst werden, sondern vielmehr auch bei der mit dem Griffhebel beabsichtigten Betätigung der Kolbenpumpe, weil dabei dann an der Kolbendichtung keine ausreichende Abdichtung gegen die Pumpenkammer mehr erhalten wird.In a liquid atomizer of this type known from DE-C-31 04 450, the two ring seals of the piston of the piston pump are so closely spaced apart that the mouth of the ventilation line lying in their annular space is already out of its rest position after a relatively short displacement of the piston connects to the atmosphere through the open end of the pump cylinder. The connection is made via an annular space that exists between the main length of the pump piston sealed by the two ring seals against the pump chamber and the surrounding pump cylinder, so that the ventilation of the reservoir during the displacement of the pump piston caused by the handle lever against the force of the return spring is constant is mediated through this annular space. The axial guidance of the pump piston on the surrounding wall of the pump cylinder is thus essentially limited only to the remaining length, which is relatively short with the two ring seals, at the piston end facing the pump chamber, so that this causes a rather unstable displacement of the piston, which tends to tilt, with a corresponding disadvantageous effect Impact on the operation of the piston pump is obtained. This disadvantageous effect is particularly noticeable when the ring seals are formed as one-piece lip seals with the piston, because then such tilting movements also lead to faster wear on the relatively thin lips of the seals. The risk of leakage leakage through the open end of the pump cylinder then exists not only in the rest position of the pump piston, should an unintentional actuation of the handle lever trigger a slight axial displacement of the piston, but rather also in the actuation of the handle lever intended Piston pump, because then a sufficient seal against the pump chamber is no longer obtained at the piston seal.

Aus der EP-A-0 295 767 ist ein Flüssigkeitszerstäuber bekannt, bei dem der Abstand von zwei einstückig ausgebildeten Lippendichtungen des Kolbens einer entsprechenden Kolbenpumpe derart bemessen ist, daß eine zur Belüftung des Vorratsbehälters in der Wand des Pumpenzylinders ausgebildete Lüftungsbohrung sowohl in der Ruheposition als auch in der mit einem Begrenzungsanschlag erhaltenen maximalen Verschiebeposition des Pumpenkolbens in dem ringförmigen Zwischenraum zwischen den beiden Lippendichtungen liegt. In der maximalen Verschiebeposition des Pumpenkolbens wird dabei gleichzeitig mit der an der Pumpenkammer angeordneten einen Lippendichtung eine teilweise Überdeckung der in der Pumpenkammer mündenden Einlaß-Saugleitung erhalten, sodaß eine der Pumpenkammer vorgeschaltete Ventilkammer dann auch eine Anschlußverbindung an die mit der anderen Lippendichtung gegen das offene Ende des Pumpenzylinders abgedichtete Lüftungsbohrung aufweist. Der ringförmige Zwischenraum zwischen den beiden Ringdichtungen steht dabei gleichzeitig über eine in der Wand des Pumpenzylinders achsparallel ausgebildete Belüftungsnut mit der Atmosphäre in Verbindung, wobei diese Verbindung von der in der Ruhestellung des Pumpenkolbens das offene Ende des Pumpenzylinders abdichtenden Lippendichtung bei der Bewegung des Pumpenkolbens freigegeben wird. Auch bei diesem Flüssigkeitszerstäuber besteht daher die Gefahr eines Entweichens von Leckflüssigkeit über das offene Ende des Pumpenzylinders.From EP-A-0 295 767 a liquid atomizer is known in which the distance between two integrally formed lip seals of the piston of a corresponding piston pump is dimensioned such that a ventilation hole designed for ventilation of the reservoir in the wall of the pump cylinder is in the rest position as well also lies in the maximum displacement position of the pump piston obtained with a limit stop in the annular space between the two lip seals. In the maximum displacement position of the pump piston, at the same time as the lip seal arranged on the pump chamber, a partial coverage of the inlet suction line opening into the pump chamber is obtained, so that a valve chamber upstream of the pump chamber then also has a connection to the other lip seal against the open end of the pump cylinder has sealed ventilation hole. The annular space between the two ring seals is connected to the atmosphere at the same time via a ventilation groove formed in the wall of the pump cylinder in an axially parallel manner, this connection being different from that in the rest position of the pump piston, the open end of the pump cylinder sealing lip seal is released during the movement of the pump piston. With this liquid atomizer there is therefore a risk of leakage leakage through the open end of the pump cylinder.

Die durch die Patentansprüche gekennzeichnete Erfindung löst die Aufgabe, einen manuell betätigbaren Flüssigkeitszerstäuber der angegebenen Gattung derart auszubilden, daß eine größere Sicherheit für ein Entweichen von Leckflüssigkeit über das offene Ende des Pumpenzylinders erhalten wird.The invention characterized by the claims solves the problem of designing a manually operable liquid atomizer of the type specified in such a way that greater security for leakage leakage is obtained via the open end of the pump cylinder.

Die mit dem erfindungsgemäßen Flüssigkeitszerstäuber erzielbaren Vorteile liegen im wesentlichen darin, daß jetzt mit der Kolbendichtung eine verbesserte Axialführung des Pumpenkolbens erhalten wird, die mit Unterstützung der besonderen Schwenklagerung des Griffhebels zu einer streng linearen Bewegung idealisiert werden kann. Die dadurch mögliche Vermeidung von Kippbewegungen des Kolbens bei der Betätigung der Kolbenpumpe ergibt damit eine merkliche Verringung der Gefahr eines Entweichens von Leckflüssigkeit über das offene Ende des Pumpenzylinders, wobei diese Gefahr primär auch für die Ruheposition völlig ausgeschaltet ist, da auch bei einer unbeabsichtigten minimalen Verschiebung des Kolbens das offene Ende des Pumpenzylinders durch die Kolbendichtung gegen die Atmosphäre abgedichtet bleibt beziehungsweise die Belüftungsnut derart angelegt ist, daß damit ein Entweichen von Leckflüssigkeit praktisch ausgeschlossen werden kann.The advantages that can be achieved with the liquid atomizer according to the invention are essentially that an improved axial guidance of the pump piston is now obtained with the piston seal, which can be idealized for a strictly linear movement with the support of the special swivel bearing of the handle lever. The possible avoidance of tilting movements of the piston when the piston pump is actuated thus results in a noticeable reduction in the risk of leakage escaping through the open end of the pump cylinder, this risk also being completely eliminated primarily for the rest position, since even with an unintentional minimal displacement the piston, the open end of the pump cylinder remains sealed from the atmosphere by the piston seal or the ventilation groove is designed in such a way that leakage of leakage fluid can be practically ruled out.

Ein Ausführungsbeispiel des erfindungsgemäßen Flüssigkeitszerstäubers ist in der Zeichnung schematisch dargestellt und wird nachfolgend näher erläutert.An embodiment of the liquid atomizer according to the invention is shown schematically in the drawing and is explained in more detail below.

Es zeigt

Fig. 1
einen Längsschnitt des Zerstäubers,
Fig. 2
eine Schnittansicht nach der Linie II-II in Fig. 1,
Fig. 3
eine Schnittansicht nach der Linie III-III in Fig. 1,
Fig. 4
eine Ansicht der Einzelheit A gemäß Fig. 1 und
Fig. 5 bis 7
weitere Schnittansichten des Zerstäubers nach den Linien V-V, VI-VI und VII-VII in Fig. 1.
It shows
Fig. 1
a longitudinal section of the atomizer,
Fig. 2
2 shows a sectional view along the line II-II in FIG. 1,
Fig. 3
2 shows a sectional view along the line III-III in FIG. 1,
Fig. 4
a view of the detail A of FIG. 1 and
5 to 7
further sectional views of the atomizer along the lines VV, VI-VI and VII-VII in Fig. 1st

Der in Fig. 1 mit seiner Gesamtheit gezeigte Flüssigkeitszerstäuber stellt eine Weiterentwicklung des Zerstäubers gemäß der DE-C-32 45 493 dar, dessen Einzelteile dabei teilweise unverändert übernommen werden und teilweise eine unkomplizierte Anpassung an die erfindungsgemäße Ausbildung erfahren. Für den Zerstäuber ist dabei die Verwendung einer Zerstäuberdüse vorgesehen, die mit einer Ausbildung gemäß der DE-C-34 43 640 eine einfache Montierbarkeit an dem Zerstäubergehäuse ergibt.The liquid atomizer shown in its entirety in FIG. 1 represents a further development of the atomizer according to DE-C-32 45 493, the individual parts of which are partly adopted unchanged and partly undergo an uncomplicated adaptation to the design according to the invention. For the atomizer, the use of an atomizer nozzle is provided, which, with a design according to DE-C-34 43 640, results in simple mounting on the atomizer housing.

Der Zerstäuber ist zur Verschraubung mit einem die zu zerstäubende Flüssigkeit enthaltenden Vorratsbehälter mittels einer durch das Zerstäubergehäuse 1 frei drehbar gehaltenen Überwurfmutter 2 vorgesehen. An dem Zerstäubergehäuse 1 ist ein Griffhebel 3 schwenkbar gelagert, der mit einem Vorsprung 4 an dem durch eine Rückstellfeder 5 vorgespannten Kolben 6 einer Kolbenpumpe anliegt. Der Pumpenkolben 6 ist somit durch den Griffhebel 3 gegen die Kraft der Rückstellfeder 5 in einer mit dem Zerstäubergehäuse 1 ausgebildeten Pumpenkammer 7 verschiebbar, die durch eine mit zwei Lippendichtungen 8 und 9 ausgebildete Kolbendichtung gegen ein offenes Ende des Pumpenzylinders 10 abgedichtet ist.The atomizer is provided for screwing to a storage container containing the liquid to be atomized by means of a union nut 2 which is freely rotatable by the atomizer housing 1. A handle lever 3 is pivotally mounted on the atomizer housing 1 and bears with a projection 4 on the piston 6 of a piston pump, which piston is biased by a return spring 5. The pump piston 6 can thus be displaced by the handle lever 3 against the force of the return spring 5 in a pump chamber 7 formed with the atomizer housing 1, which is sealed against an open end of the pump cylinder 10 by a piston seal designed with two lip seals 8 and 9.

In der Pumpenkammer 7 mündet eine Verbindungbohrung 11 mit einer Ventilkammer 12, an welche über ein mit einer Ventilkugel ausgebildetes Einlaß-Rückschlagventil 13 eine zu dem Vorratsbehälter führende Anschlußleitung 14 angeschlossen ist. Die somit eine Teillänge einer in der Pumpenkammer 7 mündenden Einlaß-Saugleitung bildende Anschlußleitung 14 durchsetzt ein durch die Überwurfmutter 2 festlegbares Verschlußstück 15 des Vorratsbehälters, wobei das Verschlußstück insgesamt zylindrisch ausgebildet ist und eine zentrale Durchstecköffnung der Überwurfmutter mit einem radial vorstehenden Ringflansch 16 hintergreift, durch welchen somit die Überwurfmutter frei drehbar abgestützt wird. Von der Pumpenkammer 7 geht andererseits eine Auslaß-Druckleitung 17 aus, an deren Mündung die Zerstäuberdüse 18 angeordnet ist. In der in Fig. 1 gezeigten Ruheposition des Pumpenkolbens 6 wird eine durch die Rückstellfeder 5 vorgespannte Anschlagstellung des Griffhebels 3 an dem Zerstäubergehäuse 1 an einer der Zerstäuberdüse 18 nahen Stelle erhalten.In the pump chamber 7, a connection bore 11 opens with a valve chamber 12, to which a connecting line 14 leading to the reservoir is connected via an inlet check valve 13 formed with a valve ball. The connecting line 14 thus forming a partial length of an inlet-suction line opening into the pump chamber 7 passes through a closure piece 15 of the storage container which can be fixed by the union nut 2, the closure piece being cylindrical overall and engaging behind a central push-through opening of the union nut with a radially projecting ring flange 16 which thus supports the union nut so that it can rotate freely. On the other hand, an outlet pressure line 17 extends from the pump chamber 7, at the mouth of which the atomizing nozzle 18 is arranged. In the rest position of the pump piston 6 shown in FIG. 1, a stop position of the handle lever 3 on the atomizer housing 1 biased by the return spring 5 is obtained at a location close to the atomizer nozzle 18.

In den Figuren 1, 2 und 5 ist die spezielle Schwenklagerung des Griffhebels 3 näher gezeigt. Der Griffhebel 3 ist mit einer im wesentlichen U-förmigen Lagergabel 19 ausgebildet, die an den beiden Gabelenden je einen als Doppelzapfen 20, 21 ausgebildeten Drehzapfen aufweist. Jeder Drehzapfen ist in zwei axial fluchtende Lagerbohrungen 22 und 23 einer Gehäuseaußenwand 24 und einer beabstandeten Gehäuseinnenwand 25 eingesetzt, die somit paarweise zu beiden Seiten der mit dem Zerstäubergehäuse 1 ausgebildeten Auslaß-Druckleitung 17 angeordnet sind. Diese paarweise Anordnung ist dabei gemäß der Schnittdarstellung in Fig. 5 derart an dem Zerstäubergehäuse 1 ausgebildet, daß wenigstens für die beiden Gehäuseinnenwände 25 eine elastisch federnde Ausbildung erhalten wird, so daß beim Vorschieben der Gabelenden respektive der an den Gabelenden ausgeformten Drehzapfen 20 und 21 in die mit den beiden Wandpaaren ausgebildeten Zwischenräume eine entsprechend federnd nachgiebige Führung erhalten wird, die ein Einschnappen der Drehzapfen in die Lagerbohrungen 22, 23 begünstigt. Durch die Ausbildung der Drehzapfen als Doppelzapfen wird für den Griffhebel 3 ein Schwenklager erhalten, das auch bei einer etwas robusteren Betätigung des Griffhebels eine unveränderte Anlage des Vorsprunges 4 an dem Pumpenkolben 6 sicherstellt und damit verhindert, daß der Pumpenkolben eine von der Wirklinie der Rückstellfeder 5 abweichende Bewegung erfährt.In Figures 1, 2 and 5, the special pivot bearing of the handle lever 3 is shown in more detail. The handle lever 3 is formed with an essentially U-shaped bearing fork 19, which has a pivot pin formed as a double pin 20, 21 at each of the two fork ends. Each pivot is inserted into two axially aligned bearing bores 22 and 23 of an outer housing wall 24 and a spaced inner housing wall 25, which are thus arranged in pairs on both sides of the outlet pressure line 17 formed with the atomizer housing 1. This paired arrangement is designed according to the sectional view in FIG. 5 on the atomizer housing 1 in such a way that at least for the two housing inner walls 25 an elastically resilient design is obtained, so that when the fork ends are pushed forward or at the fork ends molded pivot 20 and 21 in the gaps formed with the two pairs of walls a corresponding resilient guide is obtained, which promotes snapping of the pivot into the bearing bores 22, 23. By designing the trunnion as a double pivot, a pivot bearing is obtained for the handle lever 3, which ensures that the projection 4 remains in unchanged contact with the pump piston 6 even when the handle lever is operated somewhat more robustly, and thus prevents the pump piston from moving from the line of action of the return spring 5 experiences different movement.

Die Ventilkammer 12 ist innerhalb eines hohlzylindrischen Gehäuseansatzes 26 ausgebildet, der für eine Steckverbindung mit dem Verschlußstück 15 des Vorratsbehälters vorgesehen ist. Der Gehäuseansatz 26 ist von einem koaxial ausgebildeten zweiten Gehäuseansatz 27 unter Ausbildung eines Zwischenraumes 28 umgeben, der so bemessen ist, daß beim Aufstecken des einen Gehäuseansatzes 26 auf das Verschlußstück 15 auch gleichzeitig eine Steckverbindung mit einem axial vorstehenden Ringflansch 29 des Verschlußstückes erhalten wird. Die für den Ringflansch 29 des Verschlußstückes 15 vorgesehene Steckverbindung wird noch durch eine Schnappverbindung mit dem zweiten Gehäuseansatz 27 ergänzt, die mit einer Fangnase 30 des Ringflansches 29 und einem Fangloch 31 des zweiten Gehäuseansatzes 27 ausgebildet ist. Die Schnappverbindung erfüllt dabei primär den Zweck, im Zusammenwirken des zweiten Gehäuseansatzes 27 und des radial vorstehenden Ringflansches 16 des Verschlußstückes 15 die Überwurfmutter 2 an dem Verschlußstück frei drehbar zu halten, wofür die zentrale Durchstecköffnung der Überwurfmutter einen gegenüber dem axial vorstehenden Ringflansch 29 etwas größeren Durchmesser aufweist.The valve chamber 12 is formed within a hollow cylindrical housing extension 26, which is provided for a plug connection with the closure piece 15 of the storage container. The housing extension 26 is surrounded by a coaxially formed second housing extension 27 with the formation of an intermediate space 28 which is dimensioned such that when a housing extension 26 is plugged onto the closure piece 15 a plug connection with an axially projecting ring flange 29 of the closure piece is obtained at the same time. The plug connection provided for the ring flange 29 of the closure piece 15 is supplemented by a snap connection with the second housing attachment 27, which is formed with a catch lug 30 of the ring flange 29 and a catch hole 31 of the second housing attachment 27. The snap connection primarily serves the purpose of keeping the union nut 2 freely rotatable on the closure piece in the interaction of the second housing extension 27 and the radially projecting ring flange 16 of the closure piece 15, for which purpose the central push-through opening of the union nut has a somewhat larger diameter than the axially projecting ring flange 29 having.

In dem axial vorstehenden Ringflansch 29 des Verschlußstückes 15 ist eine achsparallel verlaufende Längsnut 32 ausgebildet, die mit einem Preßsitz des Ringflansches gegenüber dem Gehäuseansatz 26 abgedichtet wird. Die Längsnut 32 bildet eine Teillänge einer Belüftungsleitung, die über eine mit dem Zwischenraum 28 zwischen den beiden Gehäuseansätzen 26 und 27 ausgebildete Vorkammer und eine Lüftungsbohrung 33 in der Wand des Pumpenzylinders 10 an den ringförmigen Zwischenraum 34 zwischen den beiden Lippendichtungen 8 und 9 des Pumpenkolbens 6 angeschlossen ist. An ihrem anderen Ende weist die Längsnut 32 einen Anschluß an eine Bohrung 35 des Verschlußstückes 15 auf, über welche somit eine Verbindung mit dem Vorratsbehälter herstellbar ist. Um die Vorkammer der Belüftungsleitung genügend dicht abzuschließen und somit nur eine über die Längsnut 32 vermittelte Belüftung des Vorratsbehälters zu erhalten, ist im übrigen noch eine Labyrinthdichtung 36 mit den wechselseitigen Berührungsflächen des zweiten Gehäuseansatzes 27 und des Ringflansches 29 ausgebildet, die mit einem den Preßsitz des Ringflansches 29 gegenüber dem einen Gehäuseansatz 26 ergänzenden Preßsitz radial vorgespannt ist.In the axially projecting ring flange 29 of the closure piece 15, an axially parallel longitudinal groove 32 is formed, which is sealed with a press fit of the ring flange against the housing shoulder 26. The longitudinal groove 32 forms a partial length of a ventilation line which, via a prechamber formed with the intermediate space 28 between the two housing attachments 26 and 27 and a ventilation bore 33 in the wall of the pump cylinder 10, connects to the annular intermediate space 34 between the two lip seals 8 and 9 of the pump piston 6 connected. At its other end, the longitudinal groove 32 has a connection to a bore 35 of the closure piece 15, via which a connection to the storage container can thus be established. In order to close the antechamber of the ventilation line sufficiently tightly and thus to obtain only a ventilation of the storage container mediated via the longitudinal groove 32, a labyrinth seal 36 with the mutual contact surfaces of the second housing extension 27 and the ring flange 29 is also formed, which press-fits the Ring flange 29 is radially preloaded with respect to the press fit supplementing a housing extension 26.

Der zwischen den beiden Lippendichtungen 8, 9 des Pumpenkolbens 6 ausgebildete Zwischenraum 34 ist in der Ruheposition des Kolbens durch die eine Lippendichtung 9 gegen das offene Ende des Pumpenzylinders 10 abgedichtet. Gleichzeitig wird mit der anderen Lippendichtung 8 eine Abdichtung gegen die Pumpenkammer 7 erhalten. Diese doppelseitige Abdichtung existiert auch bezüglich einer Belüftungsnut 37, die mit einer Länge kleiner als der Abstand der beiden Lippendichtungen in der Wand des Pumpenzylinders 10 achsparallel ausgebildet ist und gemäß der in Fig. 4 gezeigten Einzelheit ein sich diffusorartig erweiterndes Ende 38 aufweist, das unter Hinweis auf die Darstellung in Fig. 3 an einer zu der Lüftungsbohrung 33 diametral gegenüber liegenden Stelle in der Wand des Pumpenzylinders 10 ausgebildet ist. Wenn daher der Pumpenkolben 6 durch eine Betätigung des Griffhebels 3 aus der Ruheposition heraus bewegt wird, dann wird dabei die Lippendichtung 9 aus der in Fig. 4 mit der strichpunktierten Linie 9' verdeutlichten Anfangsposition in Richtung der Pumpenkammer 7 verschoben, so daß es bei dieser Verschiebung zu einem Überstreichen der Belüftungsnut 37 kommt. Durch die Belüftungsnut 37 wird somit dann eine Verbindung des ringförmigen Zwischenraumes 34 mit dem offenen Ende des Pumpenzylinders 10 hergestellt, so daß damit unter Vermittlung der Längsnut 32 eine Belüftung des Vorratsbehälters erhalten wird. Diese Belüftung wird solange fortgesetzt, bis der Pumpenkolben 6 seine mit einem Anschlag 39 begrenzte maximale Verschiebeposition erreicht hat, in welcher dann die Lippendichtung 9 die in Fig. 4 strichpunktiert angedeutete Position 9'' einnimmt. In der maximalen Verschiebeposition des Pumpenkolbens 6 wird mit der anderen Lippendichtung 8 eine unveränderte Abdichtung des Zwischenraumes 34 und damit gleichzeitig der Lüftungsbohrung 33 gegen die Pumpenkammer 7 beibehalten, die andererseits über die Bohrung 11 eine ständig beibehaltene Verbindung mit der Ventilkammer 12 aufweist. Die Auslaß-Druckleitung 17 ist somit über die Pumpenkammer 7 ebenfalls ständig mit der Ventilkammer 12 verbunden.The intermediate space 34 formed between the two lip seals 8, 9 of the pump piston 6 is sealed in the rest position of the piston by the one lip seal 9 against the open end of the pump cylinder 10. At the same time, a seal against the pump chamber 7 is obtained with the other lip seal 8. This double-sided seal also exists with respect to a ventilation groove 37, which is formed axially parallel with a length smaller than the distance between the two lip seals in the wall of the pump cylinder 10 and, according to the detail shown in FIG. 4, has a diffuser-like widening end 38, which with reference to the illustration in FIG. 3 on one to the ventilation hole 33 diametrically opposite point in the wall of the pump cylinder 10 is formed. Therefore, if the pump piston 6 is moved out of the rest position by actuating the handle lever 3, then the lip seal 9 is shifted from the initial position illustrated in FIG. 4 with the dash-dotted line 9 'in the direction of the pump chamber 7, so that it is at this Shift comes to sweep the ventilation groove 37. A connection of the annular intermediate space 34 to the open end of the pump cylinder 10 is then produced by the ventilation groove 37, so that ventilation of the storage container is obtained by means of the longitudinal groove 32. This ventilation is continued until the pump piston 6 has reached its maximum displacement position limited by a stop 39, in which the lip seal 9 then assumes the position 9 ″ indicated by dash-dotted lines in FIG. 4. In the maximum displacement position of the pump piston 6, the other lip seal 8 maintains an unchanged seal of the intermediate space 34 and thus at the same time the ventilation hole 33 against the pump chamber 7, which on the other hand has a connection with the valve chamber 12 that is constantly maintained via the bore 11. The outlet pressure line 17 is thus also continuously connected to the valve chamber 12 via the pump chamber 7.

Anstelle der Labyrinthdichtung 36, die mit umlaufenden Rippen oder Rillen an den zusammenwirkenden Berührungsflächen des zweiten Gehäuseansatzes 27 und des Ringflansches 29 ausgebildet ist, kann für die Abdichtung an diesen Berührungsflächen auch ein O-Ring vorgesehen sein. Auch die Lippendichtungen 8,9 des Pumpenkolbens 6 können durch solche separaten O-Ringe ersetzt sein. Schließlich kann anstelle der Belüftungsnut 37 auch eine Rippe an der Wand des Pumpenzylinders 10 ausgeformt sein, um die Verbindung mit der Atmosphäre außerhalb der Ruheposition des Pumpenkolbens zu erhalten.Instead of the labyrinth seal 36, which is formed with circumferential ribs or grooves on the cooperating contact surfaces of the second housing extension 27 and the ring flange 29, an O-ring can also be provided for the sealing on these contact surfaces. The lip seals 8, 9 of the pump piston 6 can also be replaced by such separate O-rings. Finally, instead of the ventilation groove 37, a rib can also be formed on the wall of the pump cylinder 10 in order to maintain the connection to the atmosphere outside the rest position of the pump piston.

Claims (6)

  1. Manually operable atomizer for liquids, adapted to be screwed together with a reservoir containing the liquid to be atomized, by means of a union nut (2), comprising:
    - a housing (1) of a reciprocating pump whose plunger (8) is provided for displacement against the force of a restoring spring (5) by means of an operating lever (3) pivotable at said housing (1) in a pump chamber (7) formed in the axial connector at a pump cylinder (10);
    - an inlet suction line (11) opening in said pump chamber (7) and extending from a valve chamber (12) formed on a sealing plug connector means outside said pump chamber (7) between a hollow cylindrical housing connector (26) and a cylindrical closing element (15) of said reservoir, which is adapted to be fixed by means of said union nut (2) and which comprises an inlet non-return valve (13) at the orifice of a connecting line (14) formed by said closing element (15);
    - an outlet pressure line (17) which extends from said pump chamber (7) and has an orifice at which a spray nozzle (18 is disposed, and
    - a pressure regulator line (32) formed in said closing element (15), by means of which, when said plunger (6) of said reciprocating pump is moving, a communication may be established, under control by a plunger packing (8, 9), between said reservoir and that end of said pump cylinder (10) which opens to the atmosphere, wherein
    - the orifice (33) of said pressure regulator line (32) extends from a forechamber (28) formed outside said pump cylinder (10) at a sealing plug connector means between said housing connector (26) and an axially projecting annular flange (29) of said closing element (15), and wherein a partial length of said pressure regulator line is formed by a space between said housing connector (26) and said annular flange (29) of said closing element (15), and wherein
    - said plunger packing comprises two annular packings (8, 9) spaced by an axial distance through an annular space (34), whereof one (8) permanently seals the orifice of said pressure regulator line (32) relative to said pump chamber (7), which orifice is located within said annular space at the inoperative position of said plunger (6) of said reciprocating pump,
    characterized in that the spacing of said two annular packings (8, 9) on said plunger (6) of said reciprocating pump is so dimensioned that
    - the orifice of said pressure regulator line (32) is located in said annular space (34) between said two annular packings (8, 9) even at the position of maximum displacement of said plunger (6), which is defined by a limiting means (39), and communicates with the atmosphere through a paraxial pressure regulator groove (37) which is formed in a wall of said pump cylinder (10) at a location substantially diametrically opposite to the orifice of said pressure regulator line, at a length shorter than the distance of said two annular packings (8, 9), and in that
    - the space between said housing connector (26) and said annular flange (29) of said closing element (15), which constitutes a partial length of said pressure regulator line (32), is provided in the form of a longitudinal groove (32) of said housing connector (26) and/or of said annular flange (29) of said closing element (15), said groove being sealed by a press-fit seat of said plug connector means on either side.
  2. Atomizer according to Claim 1,
    characterized in that said pressure regulator groove (37), which is formed in the wall of said pump cylinder (10), is flared in the manner of a diffuser towards its end (38) diametrically opposite to the orifice (33) of said pressure regulator line (32).
  3. Atomizer according to Claim 1 or 2,
    characterized in that a second press-fit seat supplementing said press-fit seat of said plug connector means on said annular flange (29) of said closing element (15), which carries said housing connector (26), is designed so as to present a second plug connector means of a coaxial second cylindrical hollow housing connector (27) carrying said annular flange (29) of said closing element (15).
  4. Atomizer according to Claim 3,
    characterized in that said second plug connector means is sealed by means of a labyrinth packing (36) formed by one of the areas of mutual contact of said second housing connector (27) and said annular flange (29) of said closing element (15).
  5. Atomizer according to Claim 3 or 4,
    characterized in that said second press-fit seat is formed over at least one partial area in congruence with said longitudinal groove (32) for radially biasing said labyrinth packing (36).
  6. Atomizer according to any of Claims 1 to 5, wherein said operating lever (3) is supported by means of a substantially U-shaped bearing yoke (19), with one pivot (20, 21) respectively being formed in the two ends of said yoke, in bearing bushings (22, 23) of said housing (1) of the atomizer, and bearing against said plunger (6) of said reciprocating pump by a projection (4) formed on the gripping portion of said operating lever (3),
    characterized in that each pivot is provided in the form of a double trunnion (20, 21) and is inserted into two axially aligned bearing bushings (22, 23) in an outside wall (24) of said housing and in an inside wall (25) of said housing, which is spaced from the first wall, between which walls the end of the associated yoke is engaged.
EP91101690A 1990-02-09 1991-02-07 Manually operated sprayer for liquids Expired - Lifetime EP0441377B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4004024A DE4004024A1 (en) 1990-02-09 1990-02-09 Manually operated liq. atomiser
DE9001517U DE9001517U1 (en) 1990-02-09 1990-02-09 Manually operated liquid atomizer
DE4004024 1990-02-09

Publications (3)

Publication Number Publication Date
EP0441377A2 EP0441377A2 (en) 1991-08-14
EP0441377A3 EP0441377A3 (en) 1992-02-26
EP0441377B1 true EP0441377B1 (en) 1994-12-07

Family

ID=25889941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101690A Expired - Lifetime EP0441377B1 (en) 1990-02-09 1991-02-07 Manually operated sprayer for liquids

Country Status (2)

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EP (1) EP0441377B1 (en)
DE (3) DE9001517U1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711554B1 (en) * 1993-10-22 1995-12-22 Oreal Distribution unit with controlled air intake.
DE19511885A1 (en) * 1995-03-31 1996-10-02 Bayer Ag Dispensing plant protective chemicals
US5779108A (en) * 1995-06-15 1998-07-14 Calmar Inc. Pressure venting trigger sprayer
FR2810301B1 (en) * 2000-06-16 2002-09-13 Rexam Sofab STATIC AIR RETURN DEVICE FOR LIQUID PRODUCT DISPENSER

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55373Y2 (en) * 1974-09-26 1980-01-08
JPS6032505B2 (en) * 1979-03-19 1985-07-29 株式会社吉野工業所 liquid sprayer
US4402432A (en) * 1980-02-13 1983-09-06 Corsette Douglas Frank Leak-proof dispensing pump
JPS5756066A (en) * 1980-09-22 1982-04-03 Yoshino Kogyosho Co Ltd Spray
US4365751A (en) * 1980-09-26 1982-12-28 Yoshino Kogyosho Co., Ltd. Trigger type liquid injector
DE3778441D1 (en) * 1986-07-21 1992-05-27 Yoshino Kogyosho Co Ltd LIQUID DISPENSER WITH HAND RELEASE.
US4747523A (en) * 1987-06-19 1988-05-31 Calmar, Inc. Manually actuated dispensing pump

Also Published As

Publication number Publication date
DE59103730D1 (en) 1995-01-19
DE4004024C2 (en) 1993-07-29
EP0441377A2 (en) 1991-08-14
DE4004024A1 (en) 1991-08-14
EP0441377A3 (en) 1992-02-26
DE9001517U1 (en) 1990-04-12

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