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EP0388651B1 - Dispositif pour décharger un fluide - Google Patents

Dispositif pour décharger un fluide Download PDF

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Publication number
EP0388651B1
EP0388651B1 EP90103388A EP90103388A EP0388651B1 EP 0388651 B1 EP0388651 B1 EP 0388651B1 EP 90103388 A EP90103388 A EP 90103388A EP 90103388 A EP90103388 A EP 90103388A EP 0388651 B1 EP0388651 B1 EP 0388651B1
Authority
EP
European Patent Office
Prior art keywords
valve
pump
discharge
valve seat
plunger
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
EP90103388A
Other languages
German (de)
English (en)
Other versions
EP0388651A3 (fr
EP0388651A2 (fr
Inventor
Karl-Heinz Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Publication of EP0388651A2 publication Critical patent/EP0388651A2/fr
Publication of EP0388651A3 publication Critical patent/EP0388651A3/fr
Application granted granted Critical
Publication of EP0388651B1 publication Critical patent/EP0388651B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons

Definitions

  • the invention relates to a discharge device for media according to the preamble of claim 1.
  • the discharge device is assigned at least one discharge pump.
  • a discharge device is known in which both valve parts are arranged on one and the same pump part and a deformable valve part is not deformed directly by the fluid pressure but by radial mechanical pressure.
  • the discharge device according to FR-A-2 635 084 does not have a discharge pump, but only a valve part that can be deformed under fluid pressure.
  • the discharge device with discharge pump according to EP-A-0 218 840, from which the preamble of claim 1 is delimited, has the two valve parts of a valve on the same of the two pump parts that can be moved relative to one another for manual pump actuation.
  • the invention has for its object to provide a discharge device of the type mentioned, in which the disadvantages of known designs are avoided, in particular the discharge of the medium also in particular compact or small-sized training can be controlled very well and possibly allows the simplest possible training.
  • Means are provided by which at least one valve body on the inside of at least one valve of the discharge device can change shape for the valve function and thereby at least partially determine at least one closed position or at least one open position of the valve.
  • the valve could be an inlet valve, a pure air valve, such as a ventilation valve, and / or preferably an outlet valve.
  • valve body for transferring to the open position in the direction of at least one cross-sectional extent, in particular essentially is narrowed evenly over its entire circumference under the excess pressure and / or mechanical means occurring on the corresponding side of the valve seat.
  • At least one pump chamber is connected to at least one outlet channel with the interposition of at least one outlet valve, which may open under excess pressure in the pump chamber, and has at least one outlet valve and at least one valve body which can be transferred between at least one closed and at least one open position and which is located internally, as well as at least one valve seat.
  • the discharge device should in particular be suitable for the sprayed or atomized discharge of liquid media, for the jet-like or strand-like discharge of pasty media or the like.
  • the media Pharmaceutical, cosmetic or similar agents, for example also technical aids, can be expediently applied by manual operation of the discharge device or the discharge pump.
  • At least one valve body could be formed by a pressure-elastic solid body, such as a ball, a cylinder or the like.
  • a pressure-elastic solid body such as a ball, a cylinder or the like.
  • means are expediently provided for this valve body, for example in the closed position, to be a substantially sealed system by means of at least one sealing lip experiences. If this sealing lip is not provided on the valve seat but on the valve body, then this can practically only be formed by a sealing lip-shaped component or component section.
  • the valve seat could also be elastically deformable depending on the pressure, for example in the manner of a hose valve, but there is a particularly reliable function if the valve seat is formed by a component which is dimensionally stable at least in its area, so that the valve movements are carried out exclusively by the valve body inside .
  • the valve seat is formed by a bore, for example forming a section of the outlet channel, which has essentially constant cross sections on at least one longitudinal section belonging to the valve body, the valve body can be functionally changed axially in relation to this bore without changing the function of the valve got to.
  • a path-dependent function of the valve can also be provided, in which case a change in shape is not absolutely necessary.
  • valve body or the valve seat as, for example, a one-part component with a functional part of the discharge device which is provided for a further movement which does not serve the valve function.
  • This movement can lie transversely or at right angles to, for example, the radially narrowing valve movement.
  • the two valve parts can be changed relative to one another both with regard to the valve function and in a further movement.
  • the valve body can easily carry out the further movement, it is expediently provided on at least one, in particular on the free end of a shaft, which extends essentially parallel to this direction of movement and only further away from the valve body with its lying end is supported.
  • At least one valve body on the inside or its sealing lip can be formed by a separate component or can be formed in one piece with the stem.
  • a discharge device possibly including a thrust piston pump and including at least one valve, can be created from only two or three one-piece components.
  • the discharge device is particularly suitable for being designed as a one-way discharge device, in which medium is not drawn in from each pump stroke from a media store via an inlet valve into the pump chamber, but in which the entire storage volume is contained in the pump chamber from the outset.
  • a discharge device is e.g. DE-OS 36 31 341 to which reference is made for further features, details and effects.
  • the discharge device can also be designed so that it consists of e.g. refillable media storage in the pump chamber, for example engages in a container neck of the media storage.
  • the discharge device 1 has a discharge pump 2 designed as a push piston pump, which is essentially formed by a pump cylinder 3 and a pump piston 4 guided on its running surface with at least one annular piston lip 5.
  • the pump piston 5 is provided in the illustrated embodiment with at least two, in particular three, with a small axial distance from one another and integrally formed with it, sawtooth-shaped, the same piston lips 5, which taper in cross-section to their annular lip edges at different flank angles and of which the foremost is immediately adjacent to the associated end face of the pump piston 4.
  • elastically resiliently bendable piston lips slide under prestress on the cylinder running surface.
  • a pump chamber 6 is delimited within the pump cylinder 3, which in the exemplary embodiment shown can only be opened in the direction of an outlet channel.
  • the pump cylinder 3 or the pump chamber 6 is in fact formed by a cup-shaped cylinder container 7, the open side of which is mounted only by pushing it onto the pumping piston 4, the pump chamber 6 of which, in the assembled state, is substantially completely filled with the medium to be discharged.
  • the outlet nozzle 9 can e.g. be designed as an atomizer nozzle with a radial or tangential inlet and an axial outlet.
  • the outlet channel 8 can be closed with an outlet valve 10, which essentially consists of two interlocking valve parts, namely a one-piece design with the cylinder container 7, inside lying valve body 11 with sealing lip 12 and a valve seat 13 formed in one piece with the pump piston 4.
  • the valve seat 13 lies within the pump piston 4 or a piston shaft 14 connected in one piece to it, which has approximately the same external cross-sections as the pump piston 4 between the piston lips 5 and extends approximately to the outlet nozzle 9 or in the area thereof forms at least part of a swirl device for guiding the flow of the medium supplied to the outlet nozzle 9 and can be several times longer than the pump piston 4.
  • the valve seat 13 which has constant internal cross sections over its length, is formed by at least one longitudinal section of a blind bore 15 lying in the pump piston 4 and in the piston shaft 14, essentially in the central axis thereof, the open end of which lies in the front end face of the pump piston 4 and whose length is several times greater than their diameter is.
  • the blind hole 15 has constant internal cross sections over its entire length and expediently also forms the valve seat 13 essentially over its entire length.
  • at least one narrower, approximately radial transverse channel 16 is guided to the outer circumference of the piston skirt 14 from the blind hole 15 .
  • the only channel groove 17 connected to a single transverse channel 16 is provided in the outer circumference of the piston shaft 14 and is closed over its length on its open groove side by a discharge sleeve 18 which extends the piston shaft 14 approximately to the pump piston 4 or to the associated rearmost one Piston lip 5 and closely surrounds substantially over its entire length.
  • the outlet valve 10 and the discharge nozzle 9 are in the pump axis 20.
  • valve body 11 could e.g. be arranged or held on the component forming the valve seat 13 or on the pump piston 4, wherein a design which is in one piece with this component may be conceivable.
  • the valve body 11 is connected to a component which can be displaced simultaneously with the pump stroke, namely the pump cylinder 3 or the cylinder container, in such a way that it also carries out the pump stroke movement relative to the valve seat 13.
  • the valve body 11 with the valve seat 13 or the blind bore 15 forms a further pump in the form of a thrust piston pump directly downstream in the flow direction of the pump chamber 6, the effective cross sections of which are substantially smaller than those of the pump chamber 6.
  • This further pump is filled during the pumping stroke from the pump chamber 6 and at the same time accelerates the medium introduced into it in the direction of the discharge nozzle 9, the valve body 11 with a shaft 22 carrying it acting primarily as a displacement piston in the blind hole 15.
  • the blind hole 15 is completely free in cross section between the valve body 11 and its bottom.
  • the valve body 11 is designed in the manner of a hollow sleeve or ring body, for which it is provided on its front end face in the flow direction with a blind hole-like recess 19 which is widened at an acute angle to its open end face and whose axial extent is approximately in the order of magnitude of its greatest width .
  • the sealing lip 12, which is ring-shaped in cross-section and essentially forms the entire valve body 11, is at least slightly tapered in cross-section with respect to its annular end face which is at the front in the direction of flow End face on the outer circumference forms the radially outward most protruding, annular sealing edge 21 with an acute angle in cross section, which also protrudes slightly radially beyond the outer circumference of the shaft 22.
  • the shaft 22 has essentially constant outer cross sections over its entire or effective length, which are only slightly smaller than the inner cross sections of the valve seat 13 or the blind hole 15, so that the valve body 11 and the shaft 22 with the valve seat 13 form a gap-shaped annular channel limit, the cross section of which can be of the order of the transverse channel 16.
  • the sealing lip 12 or the sealing edge 21 is dimensioned such that it rests on the valve seat 13 with a resilient bias in the idle state and the outlet valve 10 is thereby closed.
  • the shaft 22 is free from engaging parts and can therefore have full cross sections over its length.
  • the sealing lip 12 projecting freely in cross-section in the conveying direction can be elastically resiliently so radially narrowed that its outer circumference is approximately the same width as that of the shaft 22 or, in contrast, is even smaller, so that the said annular channel then connects the pump chamber 6 and the Outlet channel 8 releases. Due to the design described, the valve body 11 forms a closure in the idle state, the closing force of which increases with excess pressure in the outlet channel 8. With negative pressure in the outlet channel 8 or with excess pressure in the pump chamber 6, on the other hand, the valve body 11 becomes narrower or narrower in the manner mentioned depending on the pressure.
  • valve body 11 or the shaft 22 could be held with webs projecting approximately radially. In the illustrated embodiment, however, the valve body 11 is exclusively with the one facing away from it End of the shaft 22 is held, which integrally connects to the inside of the bottom wall 23 of the cylinder container 7, so that the shaft 22 extends substantially over the entire length of the pump chamber 6 and free of space within this or like the valve body essentially between the ends of the cylinder or the pump chamber.
  • valve body 11 protrudes freely towards the open or discharge end of the pump cylinder 3, but is set back relative to this end in such a way that it already engages in the valve seat 13 when the pump piston 4 is inserted and in its initial position, but directly adjacent to the front end face of the Pump piston 4 lies within this.
  • the valve body 11 contributes to securing the pump cylinder 3 with respect to the pump piston 4 against forces acting transversely to the pump axis 20.
  • the cylinder container 7 is mounted and secured only by being plugged onto the pumping piston 4 and is otherwise without support relative to the rest of the discharge device 1, in particular on the outer circumference. This makes it very easy to replace the cylinder container 7 after being removed.
  • the pump cylinder 3 On the one hand and the pump piston 4 on the other hand.
  • the handle 24 of the cylinder container 3 is formed by its bottom wall 23, which forms a correspondingly recessed thumb cavity on its outside.
  • the cylinder container 7 At the opposite or open end, the cylinder container 7 has an annular collar 25 which projects only over its outer circumference, the pump cylinder 3 at this end being closed exclusively by the inserted pump piston 4 and not, for example, additionally by a cylinder cover, a cap or the like.
  • the piston raceway is widened slightly conically at the insertion end.
  • the pump piston 4 is in his front end surface provided with an approximately spherical cap-shaped recess 26, which essentially adjoins the front, frusto-conical flank of the foremost piston lip 5, the cross-sectional shape formed thereby being essentially completely complementary to the cross-sectional shape of the inner surface of the bottom wall 23, against which the pump piston 4 is connected its front end surface can be moved to a narrow, essentially gap-free system.
  • the pump chamber 6 can practically be narrowed to a volume-free dimension and thus be emptied almost completely.
  • the discharge nozzle 9 is provided at the end of a discharge nozzle 27 which is frusto-conical and essentially lies in the pump axis 20, the outer circumference of which is essentially formed by an outer sleeve 28.
  • the rear end of the outer sleeve 28 is formed in one piece with a cap 30 which is elongated in the axial view, namely, for example is essentially flat-oval or elliptical.
  • the smaller cross-sectional extent is approximately in the order of magnitude of the associated outer width of the rear end of the discharge nozzle 27, while the larger cross-sectional extension is several times larger, so that two pressure handles 29 lying on opposite sides of each other are formed by the corresponding cap end wall 31 .
  • Their pressure surfaces are expediently inclined to the discharge nozzle 27 at a small angle so that they are towards them increase the outer ends in the axial distance from the handle 24, so that with one-handed actuation there is no danger that the two fingers resting on the handles 29 can slip outwards.
  • cap end wall 31 The same shape as the cap end wall 31 has the cap jacket 32 in all cross sections substantially parallel to the pump axis 20 and protrudes against the discharge nozzle 9 freely over the full width so far that it protrudes relatively far beyond the cylinder container 7 in the starting position.
  • the cap jacket 32 On one or both long sides, the cap jacket 32 is provided with a thumb-engaging cutout 33 which extends from its rear end edge and extends approximately to the region of the front end surface of the pump piston 4 and which, like this end surface, is at a short distance from the end wall 31.
  • the filled discharge device 1 which is in the initial position, is gripped with one hand and the cylinder container 7 is pushed further onto the piston shaft 14.
  • the valve body 11 is compressed according to FIG. 3, so that the medium from the pump chamber 6 can pass through the annular channel into the blind hole 15.
  • the valve body 11 moves within the blind bore 15 in the discharge direction, so that the chamber volume of the cylindrical blind bore 15 is also reduced and the medium is also displaced from this bore, which narrows like a pump chamber.
  • the front, free end face of the valve body 11 is in the region of the boundary of the transverse channel 16 facing the pump piston 4, so that only a very small, undisplaced residual volume is left in the blind hole 15 remains.
  • this residual volume can also be reduced to a value towards zero will.
  • the front end thereof is widened slightly conically, it connecting to the recess 26.
  • the discharge device including at least one valve can be produced from a very small number of plastic parts without any use of metallic parts, it even being possible to form two pumps connected in series.
  • the bottom of the cylinder container 7 would have to be provided with a corresponding suction or inlet opening for connection to a storage tank, this inlet then being assigned a valve of the type according to the invention as an inlet valve.
  • valve body of this inlet valve could be in the same direction as the valve body 11 of the exhaust valve in a valve seat formed by the cylinder container with respect to the direction of the fault and possibly also be formed in one piece with the cylinder container, in which case the valve body cannot be arranged displaceably with respect to the valve seat needs.
  • the design according to the invention is particularly suitable for extremely small discharge devices with a piston diameter of the order of between 3 and 15 mm, in particular of the order of about 5 mm.
  • the valve body 11 can have a width in the order of less than 1 mm to more than 5 mm, in particular in the order of about 1.5 to 2 mm. In contrast, its length can be approximately one third smaller, while the stem length is several times greater than the length of the valve body or the stem diameter.
  • FIGS. 4 to 7 the same reference numerals are used for corresponding parts as in FIGS. 1 to 3, but with different letter indices, which is why corresponding description parts apply to all the figures.
  • FIGS. 4 and 5 show an embodiment in which the valve opens either exclusively or at least partially depending on the path, so that an elastic change in the shape of the valve body is not absolutely necessary for opening the exhaust valve.
  • the valve body not shown, is expediently designed the same as in the embodiment according to FIGS.
  • the longitudinal profiles 34 gradually increase in depth at a very shallow angle to their maximum depth, the length of which Initial section 35 can correspond to about a third to a quarter of the total length of the longitudinal profiles 34.
  • the valve body first reaches the area of the initial sections 35 and then the areas of constant depth of the longitudinal profiles 34, so that even at a very low pressure medium which is insufficient for an elastic shape change of the valve body the sealing lip of the valve body and the valve seat can flow to the outlet opening in the manner of a path-dependent slide-controlled valve. If the pressure is increased sufficiently strongly by correspondingly strong actuation of the discharge pump, it additionally leads to an elastic change in shape of the valve body which widens the passage cross sections. The amount of media applied per unit of time can be fine-tuned.
  • the longitudinal profiles 34 extend to the transverse bore 16a, so that a section of the valve seat free of longitudinal profiles, which is only penetrated by the transverse bore 16a, is connected to the bottom of the blind hole.
  • the longitudinal profiles 34b are formed by longitudinal ribs which are angularly limited in cross section, which have a sharp rib edge and rib flanks lying at an acute angle to one another and are each approximately symmetrical to an axial plane of the valve seat 13b.
  • These longitudinal profiles 34b press, as soon as the valve body runs onto it, its sealing lip notches-like, so that a narrow transition opening for the medium is created on both sides of the respective longitudinal profile, which can be enlarged by a corresponding increase in pressure and the resulting change in shape of the valve body.
  • the longitudinal profiles 34b extend all the way to that Longitudinal section of the valve seat 13b, in which the transverse bore 16b passes through it, namely approximately to the bottom of the blind bore 15b.

Landscapes

  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Photographic Developing Apparatuses (AREA)

Claims (12)

  1. Dispositif de décharge pour fluides, comportant au moins une pompe de décharge (2) qui présente des parties de pompe (4, 7) qui peuvent être déplacées l'une par rapport à l'autre en vue de l'actionnement manuel, et au moins une vanne (10), telle qu'une vanne de sortie, qui peut être actionnée par la pression et qui présente un corps de vanne intérieur (11) et un siège de vanne (13), parmi lesquels au moins l'un est configuré de manière à changer de forme sous cette pression et peut être déformé par la surpression d'un fluide qui définit une différence de pression, caractérisé en ce que le corps de vanne (11) et le siège de vanne (13) sont disposés respectivement sur une des parties de pompe (4, 7) qui peuvent être déplacées l'une par rapport à l'autre.
  2. Dispositif de décharge selon la revendication 1, caractérisé en ce qu'une chambre de pompe (6) est raccordée en particulier à un canal de sortie (8) par l'intermédiaire de la vanne (10) qui s'ouvre sous la différence de pression qui règne dans la chambre de pompe (6), tandis que de préférence au moins un corps de vanne (11) d'au moins une vanne (10) est configuré comme corps de vanne se rétrécissant sous une pression radiale ou une surpression.
  3. Dispositif de décharge selon la revendication 1 ou 2, caractérisé en ce qu'au moins une vanne (10) est configurée comme vanne à lèvre comportant une lèvre d'étanchéité (12) annulaire élastique et une surface périphérique associée à celle-ci et servant de siège de vanne (13), tandis que de préférence le corps de vanne (11) présente une seule lèvre d'étanchéité (12) et/ou qu'il est prévu un siège de vanne (13) formant un tronçon d'au moins un canal de sortie (8).
  4. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce que le siège de vanne (13) et le corps de vanne (11) d'au moins une vanne (10) sont reliés à des parties de pompe qui peuvent être déplacées l'une par rapport à l'autre sur l'étendue d'une course de pompage, et en ce que le siège de vanne (13) s'étend sous la forme d'un alésage aveugle (15) ou similaire sur une longueur qui correspond essentiellement à la longueur de la course, en ce que de préférence le corps de vanne (11) et/ou le siège de vanne (13) d'au moins une vanne (10) sont configurés d'un seul tenant avec la partie de pompe associée, et en ce que de préférence la pompe de décharge (2) est configurée comme pompe à piston coulissant qui présente un cylindre de pompe (3) et un piston de pompe (4) qui peut être coulissé manuellement dans ce dernier, tandis que le corps de vanne (11) est disposé sur le cylindre de pompe (3), et en particulier déborde par sa tige (22) d'une paroi frontale, située en face du piston de pompe (4), de la chambre de pompe (6).
  5. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce que le corps de vanne (11) d'au moins une vanne (10) est prévu & l'extrémité d'une tige (22) située en particulier sensiblement sur le même axe qu'un siège de vanne associé (13), ou est formé par une extrémité d'une seule pièce, élargie, de cette tige (22) débordant librement dans la direction de décharge, et en ce que de préférence le corps de vanne (11) d'au moins une vanne (10) est configuré en forme annulaire en coupe transversale et en forme de godet en coupe axiale, tandis qu'en particulier l'extrémité de la tige (22) se transforme en un tronçon de manchon s'élargissant en forme de tronc de cône à angle aigu.
  6. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce que le corps de vanne (11) d'au moins une vanne en position d'ouverture, et en particulier la tige (22), avec le siège de vanne (13) et l'alésage de vanne, délimitent un tronçon, de forme annulaire en section transversale, du canal associé, tandis que, dans chaque position, le corps de vanne (11) est de préférence situé à l'intérieur de l'alésage de vanne.
  7. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce qu'une partie de pompe délimitant à la périphérie extérieure de la pompe de décharge (2) une chambre de pompe (6) enfichée par coulissement sur une autre partie de pompe, est configurée en particulier comme réservoir cylindrique (7) fermé dans le fond, en forme de godet, à la paroi de fond (23) duquel se raccorde au moins un corps de vanne (11) d'au moins une vanne située à l'intérieur du cylindre de pompe (3), essentiellement sur le même axe, tandis que de préférence la paroi frontale, opposée à un piston de pompe (4) de la pompe de décharge (2), d'une chambre de pompe (6), et le côté frontal associé du piston de pompe (4) sont configurés complémentaires en vue d'un engagement mutuel essentiellement sans jeu, et la paroi frontale est au moins partiellement cintrée de manière convexe pour déborder dans la chambre de pompe (6).
  8. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce qu'un piston de pompe (4) de la pompe de décharge présente au moins une lèvre de piston (5), en particulier configurée d'un seul tenant avec lui, et est configuré de préférence d'un seul tenant avec une tige de piston (14) recevant un siège de vanne (13) d'au moins une vanne.
  9. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce qu'un canal de sortie (8) prévu entre les surfaces périphériques est situé dans la direction de décharge après le siège de vanne (13) d'au moins une vanne configurée comme vanne de sortie (10), est de préférence relié au siège de vanne (13) par au moins un alésage transversal (16), situé en position immédiatement voisine à l'extrémité de l'alésage aveugle (15), tandis qu'en particulier la tige de piston (14) est placée dans un manchon de décharge (18) formant à son extrémité une buse de décharge (9).
  10. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce que deux pompes de décharge branchées en particulier directement l'une derrière l'autre sont prévues, parmi lesquelles de préférence le piston de la pompe disposée en deuxième position dans la direction d'écoulement est formé par le corps de vanne (11) d'une vanne de sortie (10).
  11. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce qu'au moins une vanne (10a, 10b) est configurée à la manière d'une vanne à tiroir s'ouvrant au moins en partie sous la dépendance de la position, en ce qu'en particulier l'alésage de vanne prévu comme siège de vanne (13a ou 13b) présente sur une partie de sa longueur, qui se raccorde à la position de départ du corps de vanne, au moins une profilation longitudinale (34 ou 34b) telle qu'une rainure longitudinale, une nervure longitudinale ou similaires, et en ce que de préférence la hauteur du profilé d'au moins une profilation longitudinale (34 ou 34b) remonte obliquement sur un tronçon de départ (35), et/ou en ce que la profilation longitudinale (34 ou 34b), en particulier associée à une lèvre d'étanchéité du corps de vanne, s'étend au moins jusqu'à l'alésage transversal (16a ou 16b).
  12. Dispositif de décharge selon l'une des revendications précédentes, caractérisé en ce qu'au moins un piston de pompe (4) d'au moins une pompe de décharge (2) est relié à une prise (29), en particulier réalisée d'un seul tenant avec le manchon de décharge (18), tandis que de préférence le dispositif de décharge (1) comprenant au moins une vanne est constitué d'au plus trois composants distincts.
EP90103388A 1989-03-18 1990-02-22 Dispositif pour décharger un fluide Expired - Lifetime EP0388651B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3909031 1989-03-18
DE3909031A DE3909031A1 (de) 1989-03-18 1989-03-18 Austragvorrichtung fuer medien

Publications (3)

Publication Number Publication Date
EP0388651A2 EP0388651A2 (fr) 1990-09-26
EP0388651A3 EP0388651A3 (fr) 1991-05-29
EP0388651B1 true EP0388651B1 (fr) 1996-08-14

Family

ID=6376728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103388A Expired - Lifetime EP0388651B1 (fr) 1989-03-18 1990-02-22 Dispositif pour décharger un fluide

Country Status (3)

Country Link
EP (1) EP0388651B1 (fr)
AT (1) ATE141191T1 (fr)
DE (2) DE3909031A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005528C2 (de) * 1990-02-22 1998-01-15 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung für Medien
IT1244803B (it) * 1990-11-21 1994-09-05 Promo Pack S A Erogatore-spruzzatore monodose per la somministrazione endonasale di medicamenti liquidi.
WO1993000172A1 (fr) * 1991-06-26 1993-01-07 Valois (Societe Anonyme) Dispositif pour projeter une dose predeterminee d'un produit fluide, et son procede de remplissage
FR2678906B1 (fr) * 1991-07-10 1993-10-22 Valois Dispositif pour projeter une dose predeterminee d'un produit fluide, et son procede de remplissage.
GB9125699D0 (en) * 1991-12-03 1992-01-29 Glaxo Group Ltd Device
DE19525734A1 (de) * 1995-07-14 1997-01-16 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung für fließfähige Medien, insbesondere für den Austrag in nur einem Hub
US7186630B2 (en) 2002-08-14 2007-03-06 Asm America, Inc. Deposition of amorphous silicon-containing films
DE102006008874B4 (de) 2006-02-21 2012-06-21 Ing. Erich Pfeiffer Gmbh Dosiervorrichtung mit einer manuell betätigbaren Pumpeinrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2149671A6 (fr) * 1971-08-19 1973-03-30 Step
AU471702B2 (en) * 1973-06-26 1976-04-29 Precision Valve Australia Pty. Limited Pump
US4082223A (en) * 1975-12-06 1978-04-04 Yoshino Kogyosho Co., Ltd. Trigger type spraying device
NL179791C (nl) * 1977-05-12 1986-11-17 Yoshino Kogyosho Co Ltd Zowel rechtop als in omgekeerde stand te gebruiken verstuiver.
DE8526339U1 (de) * 1985-09-14 1987-05-07 Ing. Erich Pfeiffer GmbH & Co KG, 7760 Radolfzell Austragvorrichtung für fließfähige Medien
DE3715299A1 (de) * 1987-05-08 1988-11-24 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung fuer medien
FR2635084B1 (fr) * 1988-08-08 1991-04-12 Sofab Embouts de distributeurs

Also Published As

Publication number Publication date
DE3909031A1 (de) 1990-09-27
DE59010441D1 (de) 1996-09-19
EP0388651A3 (fr) 1991-05-29
EP0388651A2 (fr) 1990-09-26
ATE141191T1 (de) 1996-08-15

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