EP1987888B1 - Dispositif de sortie - Google Patents

Dispositif de sortie Download PDF

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Publication number
EP1987888B1
EP1987888B1 EP08007090A EP08007090A EP1987888B1 EP 1987888 B1 EP1987888 B1 EP 1987888B1 EP 08007090 A EP08007090 A EP 08007090A EP 08007090 A EP08007090 A EP 08007090A EP 1987888 B1 EP1987888 B1 EP 1987888B1
Authority
EP
European Patent Office
Prior art keywords
discharge
discharge head
air outlet
liquid
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08007090A
Other languages
German (de)
English (en)
Other versions
EP1987888A2 (fr
EP1987888A3 (fr
Inventor
Thomas Bruder
Andi Herz
Gerald Krampen
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 EP1987888A2 publication Critical patent/EP1987888A2/fr
Publication of EP1987888A3 publication Critical patent/EP1987888A3/fr
Application granted granted Critical
Publication of EP1987888B1 publication Critical patent/EP1987888B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B05B11/0067—Lift valves having a valve seat located downstream the valve element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1061—Pump priming means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers
    • 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
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers 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

Definitions

  • the invention relates to a discharge device for discharging liquid or pasteusem medium with a pumping device with a volume changeable pumping chamber, with a discharge opening for the liquid medium, with a supply path between the pumping device and the discharge opening and with an outlet valve, which for opening the discharge opening in dependence of Pressure is formed in the supply path.
  • the invention further relates to a discharge head for a discharge device having a discharge opening for discharging liquid medium, a supply path for transporting the medium to the discharge opening and an outlet valve, which is designed to open the discharge opening in dependence on the pressure in the supply path.
  • EP 0 696 480 and EP 0 701 950 By using a pumping device with a variable-volume pumping chamber or a different type of pumping device, medium is introduced into the supply path when corresponding discharge devices are used, which at a sufficiently high pressure leads to an opening of the outlet valve and thus to a discharge of the medium from the supply path into the environment.
  • the outlet valve opens only at a constructive limit pressure. This ensures that a desired form of the discharge, for example a spray discharge, is achieved.
  • the object of the invention is therefore to develop a generic discharge and a generic discharge to the effect that the air in the system can be easily and easily removed when you start the discharge.
  • a generic discharge device and a generic discharge head which have a gas-permeable and liquid-tight air outlet, which connects the supply path with an outside environment.
  • Such a design of a discharge device or a discharge head allows a separate outlet of the air, which otherwise opposes by their compressibility of a sufficient pressure increase to open the exhaust valve.
  • the air which is present in the supply path to the outlet valve before generating an overpressure is therefore discharged into an external environment when an overpressure is generated from the pumping chamber and / or the supply path, and for the purposes of this invention the media reservoir also represents the external environment. Exceeding the limit pressure of the exhaust valve is not required.
  • the air in the pumping chamber and / or the supply path may be replaced by liquid by single or multiple actuation of the pump until there is sufficient liquid in the pumping chamber and / or the supply path to be actuated further due to incompressibility of the liquid to reach the limit pressure required to open the exhaust valve.
  • each actuation with the concomitant decrease in volume leads, almost directly, to a fluid pressure which is greater than this limit pressure. Thus, the operating condition is reached.
  • the pumping device is preferably a manually operated pumping device. It conveys medium from an integrated in the discharge or to the discharge device connectable media storage in the feed path.
  • the feed path itself can be in the simplest case be formed by a simple channel between pumping device and discharge.
  • the outlet valve is preferably a spring-loaded outlet valve, which closes at a pressure which is less than a limiting pressure, and thereby both prevents unwanted medium from escaping as well as the unwanted impurities from entering the discharge device.
  • the gas-permeable and liquid-tight air outlet can be formed in various ways.
  • Gas permeability is to be understood in the context of this invention as meaning that the air outlet is gas-permeable when it already allows air leakage at an air pressure within the supply path which is below the limit pressure required to open the outlet valve. It is preferred if the gas permeability of the air outlet according to Gurley is less than or equal to 50 seconds, preferably less than or equal to 30 seconds, particularly preferably less than 20 seconds.
  • the liquid density of the air outlet is to be understood in the context of this invention as meaning that there is no liquid leakage at the air outlet up to the limit pressure at which the outlet valve opens. As far as a liquid outlet at the air outlet on a pure wetting or facing away in the feed path Limited side of the air outlet, this is still considered in the context of the invention as liquid-tight.
  • the air outlet is provided in the region of the feed path, in particular in an upper area in a position of use of the discharge device or of the discharge head.
  • the arrangement of the air outlet in the supply path, in particular in an upper region of the supply path, ensures that the air outlet is not blocked early in the startup of the discharge by liquid in the supply path.
  • the air outlet is provided in relation to a normal position of use of the device, approximately at the level of the discharge opening or above the discharge opening.
  • the air outlet for the air and the discharge opening for the liquid are oriented in opposite directions and orthogonal to a main extension direction of the discharge device.
  • the main extension direction is preferably a vertical direction with respect to a usual position of use of the discharge device.
  • the air outlet is provided in a valve slide of the outlet valve, preferably on a side opposite a closing section of the valve slide, in particular on a pressure plate of the valve slide provided on the opposite side.
  • the pressure plate of the valve spool extends radially from the preferably pin-shaped shaft of the valve spool.
  • One side of the pressure plate closes off a pressure space associated with and connected to the supply path.
  • the pressure plate is due to its planar design and the fact that it naturally delimits the feed path or supply path relative to the environment, particularly well for the local arrangement of the air outlet.
  • valve spool is usually a separate component, it is also advantageous in terms of mounting to provide the air outlet on the valve spool, since separate components of the air outlet, such as a separate membrane, are easier to insert into the valve spool instead of the poorly accessible housing of the discharge ,
  • a discharge device according to the invention or an inventive discharge head, wherein the air outlet is closed by a gas-permeable and liquid-tight membrane.
  • a membrane can be accommodated in a very space-saving manner and, in particular, can be accommodated in wall sections delimiting the feed path or feed path, without negatively affecting the overall size of the discharge device or the discharge head.
  • the expedient surface of the membrane is determined in particular by the amount of air to be displaced and the air pressure upon actuation of the discharge device. Good experiences were made with membrane surfaces from 1mm 2 .
  • the required membrane area can also be distributed over several membranes.
  • membranes having a mean pore size between 0.1 .mu.m and 0.5 .mu.m Preference is given to membranes having a mean pore size between 0.1 .mu.m and 0.5 .mu.m.
  • membranes with a pore size smaller than 0.2 ⁇ m are suitable for microbiological contamination due to their high tightness.
  • a larger pore size for example of 0.45 microns, is particularly useful in such membranes, which are protected by additional measures on its outer side against contamination, for example by a corresponding housing sections, which represent a protection of the membrane against contact.
  • Such comparatively large pore sizes are expedient even with lower requirements for tightness against microbiological contaminants, because it allows the use of smaller and / or fewer membranes, resulting in reduced manufacturing costs.
  • larger pores are preferred with a mean size of more than 0.4 microns.
  • the membrane is formed integrally with a component of the discharge device.
  • the component and the membrane are preferably made of the same material, for example a suitable plastic.
  • embodiments of the invention are also included in which various materials are provided for the membrane and the component carrying it.
  • a housing or a valve slide of the discharge device or of the discharge head come into consideration as supporting components.
  • the one-piece construction ensures a tight fit of the membrane, which in particular withstands the fluid pressure during use.
  • the air outlet is microbiologically sealed, so that impurities can not get into the discharge device or the discharge head through the air outlet.
  • a membrane of PTFE or polyester which preferably has a thickness of less than 500 .mu.m, preferably less than 350 .mu.m.
  • a membrane has been found to be very well suited for this purpose due to rapid venting with good liquid tightness.
  • Fig. 1 shows a discharge device 10 with a pump cap 30 and a discharge head 50.
  • the discharge device 10 is provided for attachment to a non-illustrated media storage.
  • the pumping attachment 30 comprises a pump 32.
  • This pump 32 has a pumping chamber 34, which is closed on the input side by an inlet valve 36a and on the outlet side by an outlet valve 36b.
  • a suction tube 38a is provided, through which medium from the media reservoir into the pumping chamber 34 can be conveyed.
  • the output valve 36b is followed by a pipe section 38b, which defines a first section 40a of a supply path 40.
  • a discharge-side pipe section 52a is pressed, which forms part of an approximately L-shaped second section 40b of the supply path 40 limited.
  • This second section 40b of the supply path 40 is followed by a pressure chamber 40c and a discharge opening 54.
  • the pipe section 52a is part of the discharge head 50. By connecting the pipe section 52a to the pipe section 38b, the discharge head 50 is simultaneously connected to the pump attachment 30.
  • a valve spool 60 In a transverse to a main extension direction 2 extending part of the second portion 40b of the supply path 40 and in the pressure chamber 40c, a valve spool 60 is provided which has a shaft-shaped portion 62 and a radially adjoining the shaft-shaped portion 62 valve plate 64.
  • the shaft 62 is disposed within the second portion 40b. It has a conically shaped end 62 a, which closes the discharge opening 54 in the illustrated closed state. This configuration of the conical end 62a and the discharge opening 54 provides a reliable protection against microbiological contaminants.
  • the valve disk 64 is disposed within the pressure chamber 40c and separates it from an adjacent spring receiving space 56.
  • the outer diameter of the valve disk 64 is adapted to the inner diameter of the pressure chamber 40c, so that no liquid from the pressure chamber 40c can enter the spring receiving space 56.
  • a spring 58 is arranged, which is supported on the housing of the discharge head 50, the valve slide 60 with a spring force in the direction of the discharge opening 54 subjected to force and thereby produces the closed state.
  • An actuation of the discharge device is effected by acting in the main extension direction 2 actuating stroke by an applied to a finger rest 50a of the discharge head 50 actuating force against the restoring force of the return spring 12.
  • the discharge head 50 is moved in its entirety together with the supply path 40 in the direction of the pump section 30. This results in closing the input valve 36a and opening the output valve 36b.
  • the existing in the pumping chamber 34 at this time liquid is thereby promoted in the already already liquid-filled feed path 40.
  • the discharge opening 54 is opened and the pressurized medium from the supply path 40 is discharged until the liquid pressure in the supply path has dropped below the limit pressure for opening the exhaust valve again.
  • the pump section 30 and the discharge head 50 After releasing the actuating force brings a return spring 12, the pump section 30 and the discharge head 50 back to the starting position of Fig. 1 , wherein the pumping chamber volume is increased again when the outlet valve 36b is closed and the inlet valve 36a is open, thereby conveying new medium from the medium reservoir into the pumping chamber 34.
  • air outlet openings 80 are provided in the valve disk, which are closed by thin-walled membranes 82.
  • the membrane 82 are formed as a PTFE membrane and integrally connected to the valve spool 60.
  • the membranes are permeable to gases and especially air, but form a barrier to liquid.
  • the membranes with an average pore size of about 0.2 microns form a good protection against the ingress of microbiological contaminants.
  • the discharge opening 54 which is likewise microbiologically tight in an idle state of rest, there is thus a reliable and complete protection against such contamination.
  • the embodiment of the Fig. 2 is with the embodiment of Fig. 1 largely comparable.
  • the only difference is that the membrane 82 is not provided on the valve plate 64, but in the region of the discharge opening 54 in this embodiment.
  • the membrane 82 is merely inserted with a slight interference fit into a stepped outlet opening 80.
  • An additional connection of the membrane 82 with the housing of the discharge head is not required, since in the feed path during operation, normal pressure or overpressure always prevails, so that a suction of the membrane in the feed path is not to be feared.

Landscapes

  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Coating Apparatus (AREA)

Claims (9)

  1. Tête de distribution (50) pour un dispositif de distribution (10), comprenant
    - un orifice de distribution (54) pour distribuer un milieu matériel liquide,
    - un conduit d'alimentation (40b, 40c) pour transporter le milieu matériel vers l'orifice de distribution (54),
    - une soupape de sortie (54, 62a) conçue pour ouvrir l'orifice de distribution (54) en fonction de la pression dans le conduit d'alimentation (40b, 40c),
    caractérisée par
    - une sortie d'air (80) perméable aux gaz et imperméable aux liquides, qui est fermée par une membrane (82) perméable aux gaz et imperméable aux liquides et relie le conduit d'alimentation (40b, 40c) à un environnement extérieur.
  2. Tête de distribution selon la revendication 1,
    caractérisée en ce
    que, dans une position d'utilisation du dispositif de distribution (10), la sortie d'air (80) est située dans une zone supérieure du conduit d'alimentation.
  3. Tête de distribution selon l'une des revendications précédentes,
    caractérisée en ce
    que la sortie d'air (80) est prévue dans un tiroir de soupape (60), de préférence d'un côté opposé à une section de fermeture (62a) du tiroir de soupape (60), en particulier sur une tête de pression (64) du tiroir de soupape (60) prévue du côté opposé.
  4. Tête de distribution selon l'une des revendications précédentes,
    caractérisée en ce
    que la membrane (82) présente une grosseur moyenne de pore comprise entre 0,1 µm et 0,5 µm.
  5. Tête de distribution selon l'une des revendications précédentes,
    caractérisée en ce
    que la membrane (82) est formée en une seule pièce dans un composant (60, 64) du dispositif de distribution.
  6. Tête de distribution selon l'une des revendications précédentes,
    caractérisée en ce
    que la sortie d'air (80) est conçue de manière à assurer l'étanchéité microbiologique.
  7. Tête de distribution selon l'une des revendications précédentes,
    caractérisée en ce
    que la membrane (82) est constituée de PTFE ou de polyester et présente de préférence une épaisseur inférieure à 500 µm, de préférence inférieure à 350 µm.
  8. Dispositif de distribution (10) pour distribuer un milieu matériel liquide ou pâteux, comprenant
    - une tête de distribution (50) et
    - un dispositif de pompage (32) avec une chambre de pompage (34) à volume modifiable,
    caractérisé en ce
    que la tête de distribution (50) est conçue selon l'une des revendications précédentes et que le conduit d'alimentation (40) de la tête de distribution (50) est relié au dispositif de pompage (32).
  9. Dispositif de distribution selon la revendication 8,
    caractérisé en ce
    que la sortie d'air (80) pour l'air et l'orifice de distribution (54) pour le liquide sont orientés dans des directions opposées et sont orthogonaux à une direction d'extension principale (2) du dispositif de distribution (10).
EP08007090A 2007-04-30 2008-04-10 Dispositif de sortie Active EP1987888B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007021415A DE102007021415A1 (de) 2007-04-30 2007-04-30 Austragvorrichtung

Publications (3)

Publication Number Publication Date
EP1987888A2 EP1987888A2 (fr) 2008-11-05
EP1987888A3 EP1987888A3 (fr) 2010-06-02
EP1987888B1 true EP1987888B1 (fr) 2011-05-25

Family

ID=39689157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08007090A Active EP1987888B1 (fr) 2007-04-30 2008-04-10 Dispositif de sortie

Country Status (5)

Country Link
US (1) US8038036B2 (fr)
EP (1) EP1987888B1 (fr)
AT (1) ATE510628T1 (fr)
DE (1) DE102007021415A1 (fr)
ES (1) ES2364786T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107352152A (zh) * 2016-05-10 2017-11-17 浙江金马实业有限公司 液压泵

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Publication number Priority date Publication date Assignee Title
WO2010047486A2 (fr) * 2008-10-20 2010-04-29 Byeon Jae-Sam Contenant pour substance cosmétique de type sans air
US8888978B2 (en) * 2011-03-11 2014-11-18 Life Safety Distribution Ag Vented oxygen cell
DE202011000682U1 (de) * 2011-03-24 2013-11-12 Rpc Bramlage Gmbh Spender zur Ausgabe flüssiger bis pastöser Massen
DE102013113791A1 (de) * 2013-12-10 2015-06-11 Rpc Bramlage Gmbh Spender
EP3103498B2 (fr) 2015-06-12 2023-06-14 AP Pharma Systems Atomizadores e Dispensadores Ltda Distributeur par pulvérisation de médicaments par voie nasale
US9943867B2 (en) 2016-05-10 2018-04-17 Zhejiang JM Industry Co., Ltd Extended emission time liquid sprayer
US9981278B2 (en) 2016-05-10 2018-05-29 Zhejiang Jm Industry Co., Ltd. Extended emission time liquid sprayer
FR3072311A1 (fr) * 2017-10-12 2019-04-19 Promens Sa Dispositif de distribution de produits liquides a pateux avec dispositif de fermeture formant un module
US10583450B2 (en) * 2018-04-24 2020-03-10 Gerhard Brugger Dosing dispenser

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107352152A (zh) * 2016-05-10 2017-11-17 浙江金马实业有限公司 液压泵

Also Published As

Publication number Publication date
US20080264975A1 (en) 2008-10-30
DE102007021415A1 (de) 2008-11-06
ES2364786T3 (es) 2011-09-14
EP1987888A2 (fr) 2008-11-05
ATE510628T1 (de) 2011-06-15
EP1987888A3 (fr) 2010-06-02
US8038036B2 (en) 2011-10-18

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