EP3427840B1 - Flüssigkeitsspender - Google Patents

Flüssigkeitsspender Download PDF

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Publication number
EP3427840B1
EP3427840B1 EP17181288.6A EP17181288A EP3427840B1 EP 3427840 B1 EP3427840 B1 EP 3427840B1 EP 17181288 A EP17181288 A EP 17181288A EP 3427840 B1 EP3427840 B1 EP 3427840B1
Authority
EP
European Patent Office
Prior art keywords
valve
actuator
discharge head
pump chamber
liquid
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
EP17181288.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3427840A1 (de
Inventor
Tobias Baumann
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
Aptar Radolfzell 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 Aptar Radolfzell GmbH filed Critical Aptar Radolfzell GmbH
Priority to EP17181288.6A priority Critical patent/EP3427840B1/de
Priority to BR112019027936-9A priority patent/BR112019027936B1/pt
Priority to US16/625,411 priority patent/US11179739B2/en
Priority to KR1020207000013A priority patent/KR102503350B1/ko
Priority to CN201880046766.XA priority patent/CN110831704B/zh
Priority to PCT/EP2018/066686 priority patent/WO2019011622A1/de
Publication of EP3427840A1 publication Critical patent/EP3427840A1/de
Application granted granted Critical
Publication of EP3427840B1 publication Critical patent/EP3427840B1/de
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
    • B05B11/01—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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1033—Pumps having a pumping chamber with a deformable wall the deformable wall, the inlet and outlet valve elements being integrally formed, e.g. moulded
    • 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
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • 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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/05—Details of containers
    • A45D2200/054—Means for supplying liquid to the outlet of the container
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/05—Details of containers
    • A45D2200/054—Means for supplying liquid to the outlet of the container
    • A45D2200/057—Spray nozzles; Generating atomised liquid
    • 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
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container

Definitions

  • the invention relates to a discharge head for a liquid dispenser for discharging pharmaceutical or cosmetic liquids according to the preamble of claim 1 and a liquid dispenser according to claim 14 equipped therewith.
  • a discharge head of the generic type has a base and an actuating handle which can be pressed down on the other hand and by means of which a pump device can be actuated.
  • Such a discharge head usually has a number of valves, in particular at least one of the following valves.
  • a pressure-dependent opening outlet valve between the pump chamber and the discharge opening serves the purpose of opening the liquid in the pump chamber when the pump chamber is reduced in size during actuation by the liquid pressure, so that the liquid can be discharged through a discharge opening, but closes on the return stroke.
  • a pressure-dependent opening inlet valve between the liquid inlet and the pump chamber opens in the course of the return stroke after actuation under the impression of the negative pressure in the pump chamber in order to suck liquid into the pump chamber for the next discharge process.
  • a pressure-dependent opening ventilation valve serves the purpose of opening a ventilation channel when a negative pressure has set in the liquid reservoir after a discharge. When the discharge head is at rest, the ventilation valve must be closed so that no contamination can penetrate.
  • All these valves should be closed in certain phases of operation and open in other phases.
  • the opening is primarily controlled by the applied liquid pressure and / or gas pressure. If a certain excess pressure, which is caused by the design of the valve, is exceeded, this leads to a deflection of a valve body, in particular a valve flap, so that liquid or air can flow through until the excess pressure falls below the limit and the respective valve closes again .
  • the problem with known configurations is that the design of the valve often involves a conflict of objectives. For example, it is desired that the excess pressure limit for opening the outlet valve is as low as possible so that even a slight actuation of the actuating handle causes a continuous flow of liquid. At the same time, however, it is also desired that it be in one Resting the discharge head requires a high excess pressure to open so that in a situation of low ambient pressure, for example in the cargo hold of an aircraft or in a filling device operating in a negative pressure atmosphere, no unintentional opening of the outlet valve takes place.
  • the ventilation valve that this closes the liquid reservoir very securely in the absence of a negative pressure in the liquid reservoir, but opens it reliably during or after actuation so that no negative pressure remains in the liquid reservoir.
  • the inlet valve similar to the outlet valve, it is important that it closes securely when the discharge head is in the idle state so that a negative pressure situation in the vicinity cannot cause any opening. Nevertheless, if there is a negative pressure in the pump chamber, the inlet valve should open as soon as possible.
  • dispensers are known in which for the purpose of so-called "priming", i.e. the initial filling of the pump chamber with liquid, a forced opening of the inlet valve takes place at the end of the stroke in order to push the air contained therein in the delivery state back into the liquid reservoir.
  • a pin provided in a stationary manner for the actuation handle serves as a type of driver which runs up against a dome-like valve towards the end of the actuation stroke and, with continued movement, deforms it and thereby opens it.
  • the pumping chamber is formed by a hose-like, elastically deformable pumping chamber body which also has an inlet valve flap or an outlet valve flap in a one-piece manner.
  • These dispensers are each designed in such a way that the valve flaps are otherwise decoupled from the deformation of the body.
  • the application of force to the valve flaps for the purpose of opening thus takes place solely under the impression of the gas or liquid pressures applied on both sides of the valve flaps.
  • the respective limit overpressure which is required to open the respective valves therefore does not depend on the degree of deformation of the respective pump chamber body.
  • the object of the invention is to develop a generic discharge head in such a way that it advantageously reduces the above-mentioned conflict of objectives that arise with regard to the respective limit overpressures at the valve flaps.
  • a discharge head which, in accordance with generic discharge heads, has a base and an operating handle that can be depressed in one operating direction between an unactuated end position and an actuated end position.
  • the discharge head also has a liquid inlet for connection to a liquid reservoir and a discharge opening for dispensing liquid in an environment and has a pumping device with a pump chamber arranged between the actuating handle and the base, by means of which liquid can be conveyed from the liquid reservoir to the discharge opening.
  • a generic discharge head has at least one of the three following valves.
  • An outlet valve between the pump chamber and the discharge opening which opens as a function of pressure, opens when the pump chamber is reduced in size by the liquid pressure of the liquid in the pump chamber.
  • a pressure-dependent opening inlet valve between the liquid inlet and the pump chamber opens when the pump chamber is enlarged by the negative pressure in the pump chamber.
  • a pressure-dependent ventilation valve opens when there is negative pressure in the liquid reservoir.
  • At least one of these valves has a variable limit overpressure from which it opens, this variable limit overpressure depending on the position of the actuating handle relative to the base. This means that the force with which the respective valve is structurally kept closed at the same pressure on both sides of the valve is different in the respective end positions, namely lower in the actuated end position of the actuating handle compared to the non-actuated end position of the actuating handle.
  • the inlet valve it is about the excess pressure limit in the surrounding atmosphere compared to the liquid reservoir.
  • the inlet valve it is about the excess pressure limit in the liquid reservoir compared to the pumping chamber.
  • the discharge head has an active member which rests against the actuating handle and the base and is preferably fastened there so that it deforms when the actuating handle is pressed down.
  • This deformation of the active member made of an elastic material such as an elastomer acts on a valve flap of the outlet valve, the inlet valve and / or the ventilation valve, which is attached to the active member, this effect being in the application of a force or moment through which the force with the respective
  • the valve is kept closed at the same pressure on both sides of the valve, and the required overpressure limit also falls. So that the associated desired positive effects are shown sufficiently, the design of the active member and / or the respective valve flap and the attachment of the valve flap to the active member is such that the excess pressure limit is reduced by at least 10%.
  • the overpressure limit for opening the valve which drops when actuated, reduces the risk of an oscillating opening and closing of the outlet valve occurring during slow actuation, which makes metered discharge difficult.
  • the overpressure limit in the unactuated end position can also be selected to be higher, so that the risk of the dispenser leaking in a surrounding atmosphere of low ambient pressure, for example an aircraft hold, is reduced.
  • the inlet valve which opens as intended on the return stroke
  • liquid is sucked in more quickly at the beginning of the return stroke and the actuating handle returns more quickly to its unactuated end position and can accordingly be reused more quickly.
  • the overpressure limit in the unactuated end position can be selected to be greater, so that the probability that a surrounding negative pressure will draw liquid out of the dispenser through the inlet and outlet valves decreases.
  • the ventilation valve it is achieved that this opens reliably approximately at the same time as the opening of the inlet valve in order to immediately ensure pressure equalization in the liquid reservoir.
  • the ventilation valve In the unactuated end position, on the other hand, the ventilation valve is reliably closed, so that the penetration of contaminants into the liquid reservoir is prevented if the dispenser is idle for a long time.
  • a compressible active member is placed or fastened with opposite ends on the base and on the actuating handle, so that it is compressively deformed when actuated.
  • the respective valve flap is attached to the active member, preferably by a one-piece design, that this deformation of the active member also causes a force or moment coupling into the valve flap, this force or this moment being directed in the direction in which the valve flap is intended opening the respective Valve is relocated.
  • the force with which the valve flap is pressed against its associated opposing surface and the excess pressure limit required to open the valve decreases.
  • the above-mentioned lowering of the excess pressure limit by at least 10% is aimed for.
  • the excess pressure limit drops to an even greater extent, in particular by at least 30% or even by at least 40%.
  • the overpressure limit of the outlet valve in the unactuated end position can be, for example, over 800 mbar and in the actuated end position less than 700 mbar.
  • the excess pressure limit in the non-actuated end position can be, for example, over 100 mbar and in the actuated end position less than 90 mbar.
  • the excess pressure limit in the non-actuated end position can be, for example, over 200 mbar and in the actuated end position less than 180 mbar.
  • the active member Since the active member is attached to the base as well as to the actuating handle, its deformation begins almost immediately with the start of the displacement of the actuating handle. Since this deformation leads to a lowering of the excess pressure limit, this also preferably drops immediately when actuation begins. It is considered to be advantageous if at least a 5% reduction in the overpressure limit has already been achieved by moving the actuating handle into a central position between the non-actuated end position and the actuated end position, in particular preferably at least 15% or even at least 20%.
  • the overpressure limit at the valves of different valve types decreases when the respective valve flap is acted upon when moving from the unactuated end position to the actuated end position preferably by less than 100%. Even in the actuated end position, an overpressure is therefore preferably required in order to open the respective valve. In the case of the outlet valve, this is advantageous because otherwise the suction taking place during the return stroke under the impression of a negative pressure in the pump chamber would be disturbed and there would be the risk that air would flow into the pump chamber through the discharge opening during the return stroke. In the case of the inlet valve and the ventilation valve, it is also considered to be desirable that they are not opened solely due to the deformation of the active member in the actuated end position. In this case, however, opening the respective valve as a result of the end position is less damaging and can even be advantageous in individual cases for sucking liquid into the pump chamber or air into the liquid reservoir.
  • the active member is placed against the base and the actuating handle and, in particular, fastened, which is to be understood as meaning that it is inevitably deformed when the actuating handle approaches the base.
  • the active member is preferably fixed to the base and the actuating handle by a clamp connection or the like.
  • valve flaps which have a valve flap attached to the active member in accordance with the invention, provision can be made for the valve flaps to be attached to a common active member as well as to be attached to different active members.
  • the active element for acting on a valve flap can serve as a dedicated active element solely for acting on one or more valve flaps and, moreover, be designed separately from the pumping device.
  • the pump device itself has an elastically compressible component which at the same time also forms the active member.
  • the pumping device has a pumping chamber wall which surrounds the pumping chamber and which is formed by a deformable hose-like pumping chamber component which is fastened to the base with an open input side and is fastened to the actuating handle with an open output side.
  • the active member is integrally connected to the pump chamber component, the active member in particular preferably being formed by the pump chamber wall or a part thereof.
  • the effect of the deformation of the active member on the valve flap can be implemented in various ways.
  • a design is advantageous in which the active member has a shape that is bent or kinked several times in opposite directions, which when the actuating handle is operated in the manner of a Accordion shortened.
  • the active member is formed by the pump chamber wall, this can be implemented in such a way that the pump chamber wall is designed at least in sections in the form of a bellows with a shape that is repeatedly bent or kinked in opposite directions.
  • a partial section of the active member in particular a first or last partial section of such an accordion-like active member, can already be oriented at an angle to the direction of actuation in the non-actuated end position of the actuating handle in a preferred configuration.
  • the subsection is arranged on the active member in such a way that, when the actuating handle is actuated, it is pivoted into a more angled orientation relative to the actuating direction by a kind of pivoting movement.
  • the valve flap can be arranged on this subsection or on an adjacent subsection that pivots with this subsection to a somewhat lesser extent, so that when the actuating handle is depressed, a moment acting in the open position is brought about.
  • the active member preferably has a fastening section, in particular a circumferential fastening section, at at least one end, which is fastened to the actuating handle or to the base, in particular by means of a clamp connection or a clamp connection.
  • An easily deformable tilting web can be formed on this fastening section, in particular a circumferential, collar-like tilting web, which preferably extends approximately in the plane whose normal vector coincides with the actuation direction.
  • a deformable part of the active member extends in or against the actuation direction and the valve flap extends in the opposite direction, so that when the actuation handle is actuated, a moment acting on the active member through the actuation is coupled into the valve flap in the direction of its open position becomes.
  • the tilting web acts as a decoupling means, which allows a coupled translative and / or rotative mobility of the valve flap with the end of the self-deformable Part of the active member is permitted and thus enables the coupling of a relief torque into the valve flap.
  • a related type of applying a torque and / or a force to a valve flap provides that the active member has a fastening section of the type mentioned for connection to the base and / or to the operating handle, in particular again a circumferential fastening section.
  • This fastening section merges into a deformable push web, in particular a circumferential push web, at the end of which is opposite the fastening section and offset from the valve flap, a pushing force is coupled by the depression.
  • the valve flap is formed offset towards the fastening section, so that when the actuating handle is actuated, the shifted thrust force on an outside of the valve flap causes a tensile force that couples a tilting moment in the relief direction into the valve flap.
  • the invention further relates to a liquid dispenser for dispensing pharmaceutical or cosmetic liquids with a liquid reservoir and a dispensing head of the type described.
  • the liquid dispenser is particularly suitable for pharmaceutical or cosmetic liquids. As a result of the mode of operation described above, such a dispenser is well suited for transport, since there is usually no risk of leakage. By designing the outlet valve in the manner described above, a very metered and predictable discharge is possible even when the operating handle is operated slowly.
  • the liquid reservoir of the dispenser is preferably filled with lotions or gels, lotions with a solid content or soap or shampoo.
  • An outlet valve of the type according to the invention has proven itself particularly in the case of lotions with a solid content, as is not uncommon in the field of facial cosmetics, since it also closes well when a solid granule is in the area of the sealing surface.
  • Fig. 1 shows a liquid dispenser 100 according to the invention, in the present case a liquid dispenser for dispensing cosmetic lotions.
  • the liquid dispenser 100 has a liquid reservoir 110 in the form of a bottle, at the upper end of which an outlet nozzle is arranged.
  • the liquid reservoir 110 is screwed into a discharge head 10, which in turn has a base 20 on which an actuating handle 40 designed as a pusher for the purpose of dispensing liquid through a discharge opening 44 is slidably mounted in an actuating direction 2.
  • the discharge head 10 has an in Fig. 1 Pump device 60, not shown, with which liquid can be conveyed from the liquid reservoir 110 to a discharge opening 44.
  • Fig. 2 shows the discharge head 10 in an enlarged and sectioned representation.
  • the discharge head is constructed from only a few components for the purpose of inexpensive design, namely in the core only from a component forming the base 20, a component forming the actuating handle 40 and a pump chamber component 66, which at the same time delimits a pump chamber 64 on the outside and the valve flaps 72, 82 92 forms three valves 70, 80, 90, namely an inlet valve 80 between the liquid reservoir 110 and the pump chamber 64, an outlet valve 70 between the pump chamber 64 and an environment and a vent valve 90 between the environment and the liquid reservoir 110
  • the liquid dispenser 100 can have a discharge head made of only three parts, a riser pipe 102, a seal 104 in the form of a sealing ring between the discharge head 10 and the liquid reservoir 110 and a cap not shown in the figures. The entire dispenser can thus be made up of only 4 to 7 parts, which greatly simplifies production and assembly.
  • the base 20 of the in Fig. 2 The discharge head shown has a coupling device 24 in the manner of an internal thread, an end face 25 provided with ventilation openings 26 and an outer sleeve 27 in which the actuating handle 40 is guided so as to be movable to a limited extent.
  • the end face 25 is pierced by a liquid inlet 22 with an inlet sleeve 23, which at the end has an opening 28 for the exit of liquid into the pump chamber 64 and serves to clamp the pump chamber component 66.
  • the inlet valve 80 and its circumferential valve flap 82 are provided between this opening 28 and the pump chamber 64, an end-side annular surface at the end of the inlet sleeve 23 forming a valve surface 84 of the inlet valve.
  • a ring structure is also provided on the base, the inside of which forms a valve surface 94 of the ventilation valve 90.
  • the actuation handle 40 of the in Fig. 2 The discharge head shown is guided displaceably on the base 20 by means of a jacket 45.
  • the discharge opening 44 is arranged at the upper end of the jacket 45.
  • An end face of the actuating handle 40 forms the actuating surface 42.
  • an annular holding structure 46 for clamping the pump chamber component 66 is provided on the inside of the actuating handle 40.
  • a further annular web is provided within the holding structure 46, the outside of which forms a valve surface 74 of the outlet valve 70.
  • valve flaps 72, 82 With the same pressure on both sides, the valve flaps 72, 82 are inwardly biased against the respective valve surface 74, 84.
  • a third valve flap 92 of the ventilation valve 90 rests against the valve surface 94 in an outwardly biased manner with the same pressure on both sides. All three valve flaps 72, 82, 92 are designed circumferentially and therefore have a conical section-shaped or cylindrical shape.
  • a circumferential fastening section 54 is provided, by means of which the pump chamber component 66 is clamped into the holding structure 46, thereby creating a tight coupling of the pump chamber to the discharge opening 44.
  • a thin tilting web 56 extends radially inward from the fastening section 54, with a notch 56A being provided in the present exemplary embodiment so that the tilting web develops the decoupling effect explained below.
  • the valve flap 72 adjoins the actuating direction 2, while the bellows-like pump chamber wall 62 extends in the direction of the base 20 in the opposite direction.
  • the lower end of the pump chamber component 66 forms a circumferential fastening section 55 which is clamped onto the inlet sleeve 23.
  • the valve flap 82 is integrally formed on this fastening section 55.
  • a tilting and pushing web 57, 58 adjoins the fastening section 55, which in turn is made comparatively thin by means of a circumferential notch 57A.
  • the lower end of the bellows-like pump chamber wall 62 adjoins this in the direction of the actuating handle 40.
  • the valve flap 92 of the ventilation valve 90 connects in the opposite direction.
  • the design of the pump chamber component 66 with the elements mentioned and in particular the valve flaps 72, 82, 92 serves the purpose of influencing the force with which the ends of the valve flaps 72, 82, 92 due to their connection to other parts of the pump chamber component 66 against the valve surfaces 74, 84, 94 are pressed.
  • the pump chamber component 66 and in particular its bellows-like pump chamber wall 62 form an active member 50 for controlling this respective force.
  • the tilting and pushing web 58 also has the effect that the section 53 and the valve flap 92 are slightly displaced in relation to the fastening section 54 in the direction of the arrow 7. This results in a tensile force in the side of the valve flaps 82 of the inlet valve 80 facing the pump chamber 64, as a result of which a moment is also coupled into this, which acts in the direction of arrow 8 and also reduces the contact pressure on the valve surface 84 on this valve flap 82.
  • the achieved state represents an intermediate position of the operating handle 40.
  • the respectively reduced contact force of the valve flaps 72, 82, 92 on the valve surfaces 74, 84, 94 in this state causes the limit overpressure required to open the valve to be reduced on each of the valves becomes.
  • the excess pressure limit at the outlet valve 70 is already reduced by about 30%.
  • the excess pressure limit is reduced by approximately 20%.
  • the limit overpressure is reduced by approximately 50% at the ventilation valve 90.
  • the pumping chamber wall 62 effects a restoring force by which the actuating handle 40 over the state of the Figure 3B back to the state of Figure 3A is pressed.
  • the behavior is as follows: Based on the state of the Figure 3A the actuation handle is actuated against a resistance that is maximum at the beginning, since the valve flap 72 of the outlet valve 70 is pressed against the valve surface 74 with maximum force in this state. After overcoming the starting resistance caused in this way, the valve flap 72 is opened as the movement begins due to the overpressure in the pump chamber 64 and the pressure required to keep the outlet valve 70 open is reduced as the pump chamber wall 62 and thus the active member 50 begin to deform. Thus, even if the actuation slows down, the exhaust valve 70 remains open. It only closes when it comes to a standstill, regardless of the partial stroke that has taken place up to that point. The inlet valve 80 and the ventilation valve 90 are meanwhile already closed due to the shape of the pump chamber component 66, wherein the inlet valve is additionally pressed into the closed position by the pressure in the pump chamber 64.
  • the inlet valve opens immediately, since the restoring force is at a maximum at this moment and because the excess pressure limit for opening the inlet valve is minimal.
  • the refilling of the pump chamber 64 therefore begins immediately.
  • the vent valve 90 which was already open, allows equalizing air to flow in unhindered through the vent openings 26 into the liquid reservoir and remains reliably open during the predominant return stroke. The result is a very rapid resetting of the actuating handle 40 when the pump chamber 64 is completely refilled. After the unactuated end position of the Figure 3A the next actuation stroke can follow immediately.
EP17181288.6A 2017-07-13 2017-07-13 Flüssigkeitsspender Active EP3427840B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP17181288.6A EP3427840B1 (de) 2017-07-13 2017-07-13 Flüssigkeitsspender
BR112019027936-9A BR112019027936B1 (pt) 2017-07-13 2018-06-21 Cabeça de descarga para um dispensador de líquido e dispensador de líquido
US16/625,411 US11179739B2 (en) 2017-07-13 2018-06-21 Liquid dispenser
KR1020207000013A KR102503350B1 (ko) 2017-07-13 2018-06-21 액체 분배기
CN201880046766.XA CN110831704B (zh) 2017-07-13 2018-06-21 液体分配器
PCT/EP2018/066686 WO2019011622A1 (de) 2017-07-13 2018-06-21 Flüssigkeitsspender

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17181288.6A EP3427840B1 (de) 2017-07-13 2017-07-13 Flüssigkeitsspender

Publications (2)

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EP3427840B1 true EP3427840B1 (de) 2020-12-02

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US (1) US11179739B2 (ko)
EP (1) EP3427840B1 (ko)
KR (1) KR102503350B1 (ko)
CN (1) CN110831704B (ko)
BR (1) BR112019027936B1 (ko)
WO (1) WO2019011622A1 (ko)

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EP4151317A1 (de) 2019-05-06 2023-03-22 Aptar Radolfzell GmbH Austragkopf und flüssigkeitsspender mit einem austragkopf
EP3895809B1 (de) * 2020-04-14 2024-03-06 Aptar Radolfzell GmbH Verfahren zur auswertung einer pumpbetätigung sowie flüssigkeitsspender und auswertungseinheit, die dieses verfahren nutzen
US11260410B2 (en) * 2020-06-05 2022-03-01 Ningbo Shunde Medical Technology Co., Ltd. All-plastic liquid dispenser
WO2024018293A1 (en) * 2022-07-21 2024-01-25 Aptar Italia S.P.A. Fluid dispenser

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KR20200032085A (ko) 2020-03-25
US11179739B2 (en) 2021-11-23
CN110831704A (zh) 2020-02-21
BR112019027936A2 (pt) 2020-07-14
WO2019011622A1 (de) 2019-01-17
BR112019027936B1 (pt) 2022-12-20
US20210121904A1 (en) 2021-04-29
CN110831704B (zh) 2022-02-18
KR102503350B1 (ko) 2023-02-23
EP3427840A1 (de) 2019-01-16

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