EP0388651A2 - Dispositif pour décharger un fluide - Google Patents

Dispositif pour décharger un fluide Download PDF

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Publication number
EP0388651A2
EP0388651A2 EP90103388A EP90103388A EP0388651A2 EP 0388651 A2 EP0388651 A2 EP 0388651A2 EP 90103388 A EP90103388 A EP 90103388A EP 90103388 A EP90103388 A EP 90103388A EP 0388651 A2 EP0388651 A2 EP 0388651A2
Authority
EP
European Patent Office
Prior art keywords
valve
pump
discharge
valve body
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90103388A
Other languages
German (de)
English (en)
Other versions
EP0388651A3 (fr
EP0388651B1 (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 which, according to the invention, is assigned to or has at least one discharge pump in order to achieve a particularly easily controllable discharge of the medium.
  • a discharge device with at least one discharge pump in which 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 at least one outlet valve, at least one, depending on the pressure, between at least one Has closed and at least one openable position, internal valve body and 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 being pharmaceutical, cosmetic or similar agents, for example also techni cal aids and can be expediently applied by manual operation of the discharge device or the discharge pump.
  • the invention is further based on the object of providing a discharge device of the type mentioned, in which the disadvantages of known designs are avoided, in particular the discharge of the medium can be controlled very well even with a particularly compact or small-sized design, and which the simplest possible training allowed.
  • 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 vent valve, and / or preferably an outlet valve.
  • a particularly advantageous embodiment results if the valve body for transfer into 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 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.
  • this valve body means are expediently provided for this valve body to be essentially sealed, for example in the closed position by at least one sealing lip location experienced. 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 safe 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 any change in 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-piece 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 carry out the further movement without any problems, 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 with its further distance from the valve body lying end is supported.
  • At least one internal valve body 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 sucked 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 pumping piston 5 is provided in the illustrated embodiment with at least two, in particular three, with a small axial distance to 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 pump 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 at least by a longitudinal section of a blind bore 15 lying in the pump piston 4 and in the piston skirt 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 substantially over its entire length. Immediately adjacent to the blind hole bottom, at least one of the blind hole 15, which is narrower, approximately radial, is guided to the outer circumference of the piston skirt 14 .
  • 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 20th
  • 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 that is in one piece with this component would possibly be conceivable.
  • the valve body 11 is connected to a component that 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 connected 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 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 substantially 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 constricted 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 to the one Exhaust 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 only with that facing away from it End of the shaft 22 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 substantially between the ends of the cylinder or the pump chamber.
  • the valve body 11 projects freely towards the open or discharge-side 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 in position exclusively by being plugged onto the pump piston 4 and is otherwise without support compared 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 slightly conically expanded 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 substantially 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 lies essentially 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 extent 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 having the cap jacket 32 lies in all cross-sections essentially 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 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, which, like this end surface, is at a short distance from the end wall 31.
  • the filled discharge device 1 which is in the starting 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, thereby displacing the medium from this bore, which narrows like a pump chamber.
  • the front, free end face of the valve body 11 stands 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 close to zero be wrested.
  • 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 would have to be provided with a corresponding suction or inlet opening for connection to a storage container, 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 lie in a valve seat formed by the cylinder container in the same direction as the valve body 11 of the exhaust valve with respect to the direction of the malfunction and could 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 either opens 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. 1 to 3.
  • the valve body first passes into the area of the initial sections 35 and then into the areas of constant depth of the longitudinal profiles 34, so that even with 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 up 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 166a, 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 formed approximately symmetrically 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 increased by a corresponding increase in pressure and the resulting change in shape of the valve body.
  • the longitudinal profiles 34b extend all the way Longitudinal section of the valve seat l3b, in which this is penetrated by the transverse bore 16b, 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)
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
DE3909031A DE3909031A1 (de) 1989-03-18 1989-03-18 Austragvorrichtung fuer medien
DE3909031 1989-03-18

Publications (3)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486894A1 (fr) * 1990-11-21 1992-05-27 Promo Pack Sa Pulvérisateur d'une dose unique endonasale des médicaments liquides
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
FR2678906A1 (fr) * 1991-07-10 1993-01-15 Valois Dispositif pour projeter une dose predeterminee d'un produit fluide, et son procede de remplissage.
US5307953A (en) * 1991-12-03 1994-05-03 Glaxo Group Limited Single dose dispenser having a piercing member
US8921205B2 (en) 2002-08-14 2014-12-30 Asm America, Inc. Deposition of amorphous silicon-containing films

Families Citing this family (3)

* 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
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
DE102006008874B4 (de) 2006-02-21 2012-06-21 Ing. Erich Pfeiffer Gmbh Dosiervorrichtung mit einer manuell betätigbaren Pumpeinrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218840A2 (fr) * 1985-09-14 1987-04-22 Ing. Erich Pfeiffer GmbH & Co. KG Pulvérisateur pour matériaux fluidiques
EP0289856A2 (fr) * 1987-05-08 1988-11-09 Ing. Erich Pfeiffer GmbH & Co. KG Distributeur de fluide
FR2635084A1 (fr) * 1988-08-08 1990-02-09 Sofab Embouts de distributeurs

Family Cites Families (4)

* 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.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218840A2 (fr) * 1985-09-14 1987-04-22 Ing. Erich Pfeiffer GmbH & Co. KG Pulvérisateur pour matériaux fluidiques
EP0289856A2 (fr) * 1987-05-08 1988-11-09 Ing. Erich Pfeiffer GmbH & Co. KG Distributeur de fluide
FR2635084A1 (fr) * 1988-08-08 1990-02-09 Sofab Embouts de distributeurs

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486894A1 (fr) * 1990-11-21 1992-05-27 Promo Pack Sa Pulvérisateur d'une dose unique endonasale des médicaments liquides
US5289818A (en) * 1990-11-21 1994-03-01 Promo Pack S.A. Single-dose spray-dispenser for endonasal administration of liquid medicaments
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
FR2678906A1 (fr) * 1991-07-10 1993-01-15 Valois Dispositif pour projeter une dose predeterminee d'un produit fluide, et son procede de remplissage.
US5307953A (en) * 1991-12-03 1994-05-03 Glaxo Group Limited Single dose dispenser having a piercing member
US8921205B2 (en) 2002-08-14 2014-12-30 Asm America, Inc. Deposition of amorphous silicon-containing films

Also Published As

Publication number Publication date
EP0388651A3 (fr) 1991-05-29
EP0388651B1 (fr) 1996-08-14
ATE141191T1 (de) 1996-08-15
DE59010441D1 (de) 1996-09-19
DE3909031A1 (de) 1990-09-27

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