EP2151280B1 - Pump device and method for operating a pump device - Google Patents
Pump device and method for operating a pump device Download PDFInfo
- Publication number
- EP2151280B1 EP2151280B1 EP09165628.0A EP09165628A EP2151280B1 EP 2151280 B1 EP2151280 B1 EP 2151280B1 EP 09165628 A EP09165628 A EP 09165628A EP 2151280 B1 EP2151280 B1 EP 2151280B1
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- EP
- European Patent Office
- Prior art keywords
- fluid
- valve
- pump device
- pump
- outlet
- 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.)
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Classifications
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- 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
- B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
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- 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
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- 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
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- 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
- B05B11/1063—Air exhausted from the pump chamber being discharged into the container during priming
Definitions
- the invention relates to a pump device for remplisstechnikszerstäubervorraumen, which has at least one fluid input line, at least one pumping chamber and at least one fluid outlet line, and at least one input valve between at least one fluid inlet line and at least one pumping chamber and at least one output valve between at least one pumping chamber and at least one fluid outlet line , Furthermore, the invention relates to a liquid atomizer and a scenting device. Moreover, the invention relates to a method for operating a pumping device.
- pumped atomizers For example, by a user through a mechanical operation pumped a small amount of liquid to a corresponding pump, thereby pressurized, and ejected in the direction of a nozzle head. At the nozzle head, the pressure of the liquid causes a sputtering of the same into many small to smallest drops. The liquid is thus broken up into a mist of minute liquid droplets, often referred to as sputtering.
- Such pump sprayers since they are often disposable, must be relatively simple and inexpensive to build. Nevertheless, the pump sprayers should work reliably. If possible, the pump sprayers should also meet relatively high hygienic requirements. Furthermore, such pump sprayers should be as universally usable.
- the object of the invention is thus to propose a pumping device for remplisstechnikszerstäubervorraumen, which is as universally applicable.
- the object of the invention is to propose a liquid atomizer which is as universally usable as possible and a scenting device which is as universally usable as possible.
- the invention consists in proposing an improved method for operating a pumping device.
- a pump device for remplisstechnikszerstäubervoriquesen which has at least one fluid input line, at least one pumping chamber and at least one fluid outlet line, and between at least one fluid input line and at least one pumping chamber at least one input valve and between at least one pumping chamber and at least one fluid outlet line at least one output valve is arranged to form such that at least one fluid branch line is provided.
- the fluid branch line With the aid of the fluid branch line, it is possible to divert a portion of the fluid being pumped or the fluid still to be pumped instead of delivering the corresponding fluid to the fluid exit line and, in turn, to a "consumer".
- the branched off fluid can be used, for example, for other purposes or, in particular, can be returned to a suction region where it can again be available to the pump device.
- a portion of the fluid is "effectively", ie spent on the actual "consumer”.
- This in turn kahn the discharged fluid amount can be reduced in a particularly simple manner.
- Due to the proposed modification however, these may "pump" or discharge significantly smaller amounts of liquid under certain circumstances. Since the proposed modification can be carried out very inexpensively, thereby a very cost-effective pumping device can be realized which, however, can handle very small to very small amounts of liquid.
- the ratio of effectively discharged fluid and branched fluid can be ensured by appropriate measures, such as in particular by a corresponding dimensioning of the fluid resistance of the "consumer” and the fluid resistance of the fluid branch line.
- a fluid is to be understood as meaning, in particular, liquids, gases, liquid-gas mixtures and supercritical fluids.
- the fluids may also contain, to some extent, solids in the form of suspended solids (eg, smoke, suspensions).
- At least one valve, in particular an input valve and / or an outlet valve of the pump device is designed as a self-closing valve, in particular designed as a force-loaded valves.
- a self-closing valve in particular designed as a force-loaded valves.
- ball valves can fall out of their closed position in the event of an "overhead position" of the pump device, and thus can no longer cause a fluid closure.
- the self-closing function can be realized in a simple way by acting on the closure body of the valve with a force which is effected or mediated in particular by means independent of the closure body.
- the application of force can be selected such that it is slightly larger than a gravitational force and / or acceleration force acting on the closure body (eg caused by impacts, centrifugal forces, deceleration forces, etc.).
- At least one self-closing valve is spring loaded and / or magnetic.
- a force application of the closure body of the self-closing valve for example, by means of a spring (in particular by means of a coil spring) particularly simple and inexpensive, but still very reliable realized.
- the valve closure body is designed as a permanent magnet and the magnetic fields generated by the permanent magnet interact with other assemblies of the valve, which may be made in particular of a ferromagnetic material.
- the permanent magnet is designed in conjunction with other assemblies of self-closing valve, and the magnetic fields generated by this with the valve closure body, which is made for example of a ferromagnetic material, interact.
- the fluid channel can be kept free of fluid flow obstructing internals substantially.
- At least one fluid branch line is in fluid communication with at least one fluid outlet line and / or at least one pumping chamber.
- the fluid branch line is in fluid communication with at least one fluid outlet line.
- the fluid branching line in the form of a simple opening (for example by means of a bore, an orifice element, etc.).
- At least one fluid branch line is provided with at least one branch valve.
- Such a design is particularly useful when the fluid branch line is in fluid communication with at least one pumping chamber.
- tests have shown that the provision of a branch valve can prevent problems with the suction process (filling the pumping chamber) particularly effective. As a result, a puncture impairment of the pumping device can be prevented particularly effectively in a simple manner.
- branch valves even if the fluid branch line communicates with other elements, such as a fluid exit line.
- At least one valve in particular at least one branch valve, is designed as a material deformation valve, in which a fluid opening is released by a material deformation of an elastic material.
- pumping devices are often designed as Einwesbauteil, and therefore problems with material fatigue phenomena usually play only a relatively minor role.
- a possible construction results, for example, when a provided with one or more openings tubular element is provided with an elastic hose pushed over it. When pressure is applied to the inside of the tube, the tube expands and, when a certain pressure difference is exceeded, allows fluid to escape from the tube interior to the outside. In the reverse direction, however, a fluid passage is effectively prevented.
- a meaningful training opportunity may result if at least one fluid branch line is formed in multiple stages.
- This can be realized, for example, in that a plurality of openings or OrificeEinraumen are connected in series.
- a kind of intermediate chamber can be provided between the individual openings.
- the respective geometric position of the passage openings is offset from one another (for example in the axial, radial and / or angular respect). With such a construction, it is possible, for example, to realize a fluid branch line, which has a relatively high flow resistance for passing through fluid, but is still made compact and has a relatively small space.
- a defined proportion of pumped and / or still to be pumped fluid is branched off via the fluid branch line. This can be done, for example, by appropriately adjusting the fluid resistance of "consumer" and fluid branch line.
- the fluid branch line is designed as an opening, its fluid resistance over the length and diameter of the opening (possibly also on the number of parallel and / or serially arranged openings) can be adjusted.
- the portion of the branched off fluid is more than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90% and / or the fraction of the branched off fluid is less than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90%. In this way, an optimized for the particular purpose pumping device can be formed.
- the outlet of the fluid branch line is fluidically connected to the fluid input line.
- the branched off Portion of the pumped fluid for example, in the reservoir from which the fluid input line removes the fluid is returned. In this way, no fluid is "lost", so that a particularly economical pumping device can be realized, Moreover, in the pumping device is not necessarily a fluid leakage into unwanted areas inside.
- a liquid atomizer in particular a liquid atomizer for a scenting device which has at least one pumping device with the structure described above.
- the liquid atomizer can also carry out particularly small amounts of liquid. This is particularly interesting in the field of scenting devices, since it is desirable here for reasons of space to be able to use particularly highly concentrated scent. However, so that it does not come to an excessively strong scenting, the discharged amounts of fragrance must be chosen correspondingly small.
- a scenting device which has at least one pump device with the structure described above and / or at least one liquid atomizer with the structure described above.
- the scenting device then has the advantages and properties already described in connection with the pump device or the liquid atomizer in an analogous manner.
- the Scenting device may in particular be a scenting device for a vehicle, preferably for a motor vehicle, preferably for a power-driven land vehicle.
- the land vehicle may in any way be a rail-bound and / or non-rail-bound vehicle.
- an application in an aircraft, a watercraft and / or in a building is conceivable.
- a meaningful embodiment results when the scenting device has at least one actuator device for actuating at least one pump device and / or at least one liquid atomizer.
- scenting can take place automatically.
- the vehicle occupants can perceive the scenting over a substantially unlimited period of time.
- a method for operating a pumping device in which a portion of the pumped fluid and / or the still to be pumped fluid is diverted and in particular is returned to the suction of the pumping device.
- the method can be further developed in the sense of the further training possibilities already described.
- the proposed method has the features and advantages already described in connection with the pump device, the Flusstechnikszerstäuber and the scenting device in an analogous manner.
- a pump sprayer 1 according to a first embodiment is shown in a schematic cross-sectional view;
- the pump sprayer 1 has an inlet channel 6, which is fluidically connected via an inlet valve 2 with a pumping chamber 3. Via an outlet valve 4, the pumping chamber 3 can deliver fluid in the direction of the outlet channel 7.
- the output channel 7 discharges the fluid in the direction of a spray nozzle 9.
- a part of the outlet channel 7 and the atomizing nozzle 9 are arranged in a spray head 8.
- the pump 5 of the pump sprayer 1 is confirmed by depressing or releasing the spray head 8.
- the input valve 2 is formed in the illustrated embodiment with a valve ball 10 which rests in its closed position in a valve seat 11.
- the output valve 4 is formed in the presently illustrated embodiment with a sealing element 12 which is axially displaceably mounted in an outer cladding tube 13 and with a sealing plate 14 works together.
- the sealing plate 14 is integrally disposed on a pin 15 which is movably arranged with a clearance in the lower region of the outlet channel 7. The play between pin 15 and outlet channel 7 is so large that fluid can pass through the gap between channel wall 16 and pin 15.
- the pump sprayer 1 When the pump sprayer 1 is operated by pushing down the spray head 8, the volume of the pumping chamber 3 of the pump 5 decreases, and the fluid contained in the pumping chamber 3 is pressurized. At the same time, the valve ball 10 is pressed into its valve seat 11, so that the input valve 2 is closed in a fluid-tight manner.
- the lower region of the sealing element 12 touches a stop web 19, which is formed in the outer cladding tube 13. If the spray head 3 is pressed further down, then the sealing element 12 is lifted off from the sealing plate 14 with the aid of the Anschtagstegs 19. The outlet valve 4 opens, and a certain amount of fluid is released into the outlet channel 7.
- the bypass opening 20 is provided in the channel wall 16 of the outlet channel 7.
- the annular space 22 is formed by the channel wall 16 and the outer cladding tube 13.
- the annular space 22 "drains" the amount of fluid supplied via the bypass opening 20 via the outlet opening 21.
- the outlet opening 21 returns the portion of the fluid pumped by the pump 5 back into the fluid reservoir 23, from which the pump 5 via its input channel 6 to refers to pumping fluid.
- Annular space 22 and outlet opening 21 is in Fig. 2 In an enlarged view, to clarify the arrangement, the first coil spring 17 is not shown for reasons of clarity.
- the output of the pump (5) is 50 microliters. This corresponds to a customary for pump sprayer 1 liquid output.
- the amount of liquid discharged via the spray head 8 is reduced to 5-8 microliters through the two openings 20, 21 (bypass opening 20, outlet opening 21).
- the bypass opening 20 and the outlet opening 21 have a diameter of approximately 0.3 mm in each case.
- the spray head 8 is released again, the spray head 8 is brought by means of the coil springs 17, 18 back up to the starting position.
- the volume of the pumping chamber 3 of the pump 5 increases.
- the increase in volume of the pumping chamber 3 causes a vacuum to be created in the pumping chamber 3.
- the valve ball 10 is lifted off the valve seat 11.
- the inlet valve 2 opens. This in turn has the consequence that fluid is sucked into the pumping chamber 3 of the pump 5 via the inlet channel 6.
- FIG. 3 is a modification of the in Fig. 1 and 2 shown Pumpzerstäubers 1 shown.
- the outlet opening 21 is arranged lower in the axial direction of the pump sprayer 24.
- the outlet opening 21 is located in a region in which it is covered by a region of the sealing element 12 in the resting state (unactuated state) of the pump sprayer 24.
- This makes it possible to achieve a liquid-tight, liquid-tight and / or gas-tight closure of the fluid container 23 from the outside world when the pump sprayer 24 is not actuated.
- no fluid can escape from the fluid container 23 when, for example, the pump sprayer 24 is inclined (tilted).
- a further embodiment of a pump sprayer 25 is shown, which again compared to the in Fig. 1 and 2 illustrated embodiment 1 or, compared to in Fig. 3 illustrated embodiment 24 is modified.
- a single outlet opening 26 is provided for the fluid pumped or pumped by the pump 5.
- the outlet opening 26 is provided in a region of the outer cladding tube 13 which defines the pumping chamber 3 of the pump 5.
- a piece of hose 27 attached in the field of Outlet opening 26 on the outside of the outer cladding tube 13 a piece of hose 27 attached.
- the hose piece 27 is made of an elastic material.
- the fluid pressure causes the hose piece 27 to lift off the outer jacket 13 slightly.
- fluid can escape from the pumping chamber 3 and into the chamber Fluid reservoir 23 flow back, where it is available for further pumping operations.
- a fluid outlet into the outlet channel 7 continues, which transports the fluid to the atomizing nozzle 9, where it finally emerges as a fluid mist.
- the effluent via the outlet opening 26 fluid content reduces the exiting via the spray head 8 fluid quantity.
- the pump 5 can "pump" significantly smaller amounts of fluid "effectively” than is the case with conventional pump atomizers.
- the proportion of the output via the outlet opening 26 amount of fluid not only by the dimensioning of the outlet opening (diameter, length, number), but also be determined by the material properties of the tube piece 27.
- the size of the tube piece 27 (and thus the length of the fluid channel in the region of the tube piece 27) also has an influence on the proportion of the fluid escaping via the dispensing opening 26.
- Fig. 5 a further modification of a pump sprayer is shown.
- illustrated modification may additionally or alternatively be provided for providing a bypass opening 20, an outlet opening 21 and an outlet opening 26, respectively.
- the inlet valve 4 is formed as a magnetically force-loaded valve.
- the inlet valve 4 comprises a valve ball 10, which cooperates with a corresponding valve seat 11.
- the ball is in the present embodiment 10 of a ferromagnetic material, such as iron, nickel or an iron alloy, in particular made of steel, manufactured.
- a ring magnet 28 Adjacent to the valve ball 10 of the exhaust valve 4, a ring magnet 28 is provided.
- the ring magnet 28 is placed outside in the region of the inlet channel 6 on the outer casing 13 and fixed there, for example by means of an adhesive.
- the ring magnet 28 is designed as a permanent magnet (it is quite conceivable to provide an electrical coil).
- the magnetic field lines generated by the ring magnet 28 cause that the valve ball 10 made of a ferromagnetic piece of value is pulled into the valve seat 11. As a result, the valve ball 11 at a tilting of the pump sprayer 30 no longer, or only made difficult roll out its valve seat 11.
- the pump sprayer 30 can thereby be used substantially independent of location.
- a riser pipe 29 is inserted into the inlet channel 6
- Riser 29 may be formed, for example, as a flexible hose, at the lower end of a weight is arranged. The suction opening of the riser 29 then follows gravitationally the liquid, so that the liquid can be removed in a plurality of position of the pump sprayer 30 from the liquid container 23,
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- Jet Pumps And Other Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
Die Erfindung betrifft eine Pumpeinrichtung für Flüssigkeitszerstäubervorrichtungen, welche zumindest eine Fluideingangsleitung, zumindest eine Pumpkammer und zumindest eine Fluidausgangsleitung aufweist, und bei der zwischen wenigstens einer Fluideingangsleitung und wenigstens einer Pumpkammer wenigstens ein Eingangsventil sowie zwischen wenigstens einer Pumpkammer und wenigstens einer Fluidausgangsleitung wenigstens ein Ausgangsventil angeordnet ist. Weiterhin betrifft die Erfindung einen Flüssigkeitszerstäuber sowie eine Beduftungsvorrichtung. Darüber hinaus betrifft die Erfindung ein Verfahren zum Betreiben einer Pumpeinrichtung.The invention relates to a pump device for Flüssigkeitszerstäubervorrichtungen, which has at least one fluid input line, at least one pumping chamber and at least one fluid outlet line, and at least one input valve between at least one fluid inlet line and at least one pumping chamber and at least one output valve between at least one pumping chamber and at least one fluid outlet line , Furthermore, the invention relates to a liquid atomizer and a scenting device. Moreover, the invention relates to a method for operating a pumping device.
Bei vielen Anwendungsgebieten ist es erforderlich, relativ kleine Flüssigkeitsmensen zu pumpen, und sie dabei auf einen relativ hohen Druck zu bringen. Dies ist beispielsweise bei sogenannten Pumpzerstaubern der Fall. Beispielsweise wird von einem Benutzer durch eine mechanische Betätigung einer entsprechenden Pumpe eine kleine Flüssigkeitsmenge gepumpt, dabei unter Druck gesetzt, und in Richtung eines Düsenkopfs ausgestoßen. Am Düsenkopf bewirkt der Druck der Flüssigkeit eine Zerstäubung derselben in viele kleine bis kleinste Tropfen. Die Flüssigkeit wird folglich in einen Nebel aus kleinsten Flüssigkeitstropfen zerteilt, was oftmals als Zerstäuben bezeichnet wird.In many applications, it is necessary to pump relatively small Flüssigkeitsmensen, while bringing them to a relatively high pressure. This is the case, for example, in so-called pumped atomizers. For example, by a user through a mechanical operation pumped a small amount of liquid to a corresponding pump, thereby pressurized, and ejected in the direction of a nozzle head. At the nozzle head, the pressure of the liquid causes a sputtering of the same into many small to smallest drops. The liquid is thus broken up into a mist of minute liquid droplets, often referred to as sputtering.
Derartige Pumpzerstäuber müssen, da es sich bei Ihnen oftmals um Einwegartikel handelt, relativ einfach und kostengünstig im Aufbau sein. Dennoch sollten die Pumpzerstäuber zuverlässig arbeiten. Nach Möglichkeit sollten die Pumpzerstäuber auch relativ hohen hygienischen Anforderungen genügen. Weiterhin sollten derartige Pumpzerstäuber möglichst universell verwendbar sein.Such pump sprayers, since they are often disposable, must be relatively simple and inexpensive to build. Nevertheless, the pump sprayers should work reliably. If possible, the pump sprayers should also meet relatively high hygienic requirements. Furthermore, such pump sprayers should be as universally usable.
Über die Jahre hinweg wurden unterschiedlichste Detailkonstruktionen von derartigen Pumpzerstäubern bekannt. Beispielsweise ist in
Bekannte Systeme sind so ausgelegt, dass eine Mindestausbringungsmenge von ca. 30 Mikrolitern produktionstechnisch nicht unterschritten werden kann. Eine deutliche Reduzierung dieser Ausbringungsmengen ist ohne Funktionsbeeinträchtigung durch eine Hubbegrenzung der Pumpe in aller Regel nicht möglich. Auch ist es kaum möglich, die Geometrie der Anordnung derart zu verkleinern, dass die Mindestausbringungsmenge deutlich reduziert wird.Known systems are designed so that a minimum application rate of about 30 microliters can not be undershot production technology. A significant reduction of these application rates is not possible without functional impairment by a stroke limitation of the pump in most cases. Also, it is hardly possible to reduce the geometry of the arrangement such that the minimum application rate is significantly reduced.
Es gibt jedoch Einsatzfälle, bei denen es erforderlich oder wünschenswert ist, kleinere Flüssigkeitsmengen auszutragen. Ein Beispiel hierfür sind beispielsweise Beduftungsvörrichtungen für Kraftfahrzeuge. Hier ist es wünschenswert, sehr kleine Flüssigkeitsmengen auszutragen, damit das Duftmittel höher konzentriert werden kann, und somit der Vorratsbehälter weniger Platz einnehmen muss.However, there are applications in which it is necessary or desirable to discharge smaller amounts of liquid. An example of this is, for example, scenting devices for motor vehicles. Here it is desirable to discharge very small amounts of liquid, so that the fragrance can be concentrated higher, and thus the reservoir must take up less space.
Sollen sehr kleine Flüssigkeitsmengen versprüht werden, so werden bislang meist spezielle Mikropumpen oder auch Vernebler auf Piezobasis eingesetzt. Diese Technologien sind jedoch nicht standardmäßig verfügbar und darüber hinaus köstenintensiv.If very small amounts of liquid are to be sprayed, special micropumps or nebulizers based on piezos have hitherto usually been used. However, these technologies are not available by default and are also expensive.
Ein weiteres Problem bei vielen bekannten Pumpzerstäubern besteht darüber hinaus darin, dass diese lageempfindlich sind. Dadurch ist die Funktion des Pumpzerstäubers nur innerhalb eines relativ eng begrenzten Winkelbereichs um die Senkrechte gewährleistet. Weicht jedoch die Lage des Pumpzerstaubers deutlich davon ab, so ist eine sichere Funktion des Pumpzerstäubers oftmals nicht mehr gewährleistet. Dies ist naturgemäß unerwünscht.Another problem with many known pump atomizers is moreover that they are sensitive to position. As a result, the function of the pump sprayer is ensured only within a relatively narrow angular range around the vertical. However, if the position of the pump sprayer differs significantly from it, a reliable function of the pump sprayer is often no longer guaranteed. This is undesirable by nature.
Die Aufgabe der Erfindung besteht somit darin, eine Pumpeinrichtung für Flüssigkeitszerstäubervorrichtungen vorzuschlagen, welche möglichst universell verwendbar ist. Darüber hinaus besteht die Aufgabe der Erfindung darin, einen möglichst universell verwendbaren Flüssigkeitszerstäuber sowie eine möglichst universell verwendbare Beduftungsvorrichtung vorzuschlagen. Weiterhin besteht die Erfindung darin, ein verbessertes Verfahren zum Betreiben einer Pumpeinrichtung vorzuschlagen.The object of the invention is thus to propose a pumping device for Flüssigkeitszerstäubervorrichtungen, which is as universally applicable. In addition, the object of the invention is to propose a liquid atomizer which is as universally usable as possible and a scenting device which is as universally usable as possible. Furthermore, the invention consists in proposing an improved method for operating a pumping device.
Es wird vorgeschlagen, eine Pumpeinrichtung für Flüssigkeitszerstäubervorrichtungen, gemäß Anspruch 1, welche zumindest eine Fluideingangsleitung, zumindest eine Pumpkammer und zumindest eine Fluidausgangsleitung aufweist, und bei der zwischen wenigstens einer Fluideingangsleitung und wenigstens einer Pumpkammer wenigstens ein Eingangsventil und zwischen wenigstens einer Pumpkammer und wenigstens einer Fluidausgangsleitung wenigstens ein Ausgangsventil angeordnet ist, derart auszubilden, dass zumindest eine Fluidabzweigungsleitung vorgesehen wird. Mit Hilfe der Fluidabzweigungsleitung ist es möglich, einen Teil der des gepumpten Fluids, bzw. des noch zu pumpenden Fluids abzuzweigen, anstatt das entsprechende Fluid zur Fluidausgangsleitung und in Folge zu einem "Verbraucher" zu befördern. Das abgezweigte Fluid kann beispielsweise für andere Zwecke genutzt werden oder insbesondere in einen Ansaugbereich zurückgeführt werden, wo es erneut der Pumpeeinrichtung zur Verfügung stehen kann. Somit wird nur ein Teil des Fluids "effektiv", also am eigentlichen "Verbraucher" ausgegeben. Damit wiederum kahn die ausgetragene Fluidmenge auf besonders einfache Weise reduziert werden. Dadurch ist es insbesondere möglich, Pumpeinrichtungen mit einem im Wesentlichen "klassischen" Aufbau weiter verwenden zu können. Durch die vorgeschlagene Modifikation können diese jedoch unter Umständen bedeutend kleinere Flüssigkeitsmengen "pumpen" bzw. austragen. Da die vorgeschlagene Modifikation sehr kostengünstig ausgeführt werden kann, kann dadurch eine sehr kostengünstige Pumpeinrichtung realisiert werden, die jedoch auch sehr kleine bis kleinste Flüssigkeitsmengen austragen kann. Das Verhältnis von effektiv ausgetragenem Fluid und abgezweigten Fluid kann durch geeignete Maßnahmen sicher gestellt werden, wie insbesondere durch eine entsprechende Dimensionierung des Fluidwiderstands des "Verbrauchers" sowie des Fluidwiderstands der Fluidabzweigungsleitung. Beispielsweise ist es möglich, die Länge bzw. den Durchmesser der Fluidabzweigungsleitung geeignet zu dimensionieren. Unter einem Fluid sind insbesondere Flüssigkeiten, Gase, Flüssigkeits-Gas-Gemische sowie überkritische Fluide zu verstehen. Gegebenenfalls können die Fluide auch bis zu einem gewissen Teil Feststoffe in Form von Schwebstoffen enthalten (z. B. Rauch, Suspensionen).It is proposed, a pump device for Flüssigkeitszerstäubervorrichtungen, according to
Alternativ oder zusätzlich ist es möglich, dass wenigstens ein Ventil, insbesondere ein Eingangsventil und/oder ein Ausgangsventil der Pumpeinrichtung als selbstverschließendes Ventil ausgeführt ist, insbesondere als kraftbeaufschlagte Ventile ausgeführt ist. Mit einer derartigen selbstverschließenden Ausführung ist es möglich, die Pumpeinrichtung weitestgehend lageunabhängig ausführen zu können, Beispielsweise kann es vermieden werden, dass Kugelventile bei einer "Überkopflage" der Pumpeinrichtung aus ihrer Verschlussstellung herausfallen können, und dadurch keinen Fluidverschluss mehr bewirken können. Die selbstverschließende Funktion kann auf einfachem Wege durch eine Beaufschlagung des Verschlusskörpers des Ventils mit einer Kraft realisiert werden, die insbesondere durch vom Verschlusskörper unabhängige Einrichtungen bewirkt bzw. vermittelt wird. Die Kraftbeaufschlagung kann dabei so gewählt werden, dass diese geringfügig größer ist als eine auf den Verschlusskörper einwirkende Gravitationskraft und/oder Beschleunigungskraft (z. B. durch Stöße, Fliehkräfte, Verzögerungskräfte usw. hervorgerufen).Alternatively or additionally, it is possible that at least one valve, in particular an input valve and / or an outlet valve of the pump device is designed as a self-closing valve, in particular designed as a force-loaded valves. For example, it can be avoided that ball valves can fall out of their closed position in the event of an "overhead position" of the pump device, and thus can no longer cause a fluid closure. The self-closing function can be realized in a simple way by acting on the closure body of the valve with a force which is effected or mediated in particular by means independent of the closure body. The application of force can be selected such that it is slightly larger than a gravitational force and / or acceleration force acting on the closure body (eg caused by impacts, centrifugal forces, deceleration forces, etc.).
Es kann sich als sinnvoll erweisen, wenn zumindest ein selbstverschließendes Ventil federbelastet und/oder magnetisch ausgeführt ist. Eine Kraftbeaufschlagung des Verschlusskörpers des selbstverschließenden Ventils kann beispielsweise mit Hilfe einer Feder (insbesondere mit Hilfe einer Spiralfeder) besonders einfach und kostengünstig, aber dennoch sehr zuverlässig realisiert werden. Auch ist es möglich, das selbstverschließende Ventil mit Hilfe magnetischer Kräfte zu verschließen. Beispielsweise ist es möglich, dass der Ventilverschlusskörper als Permanentmagnet ausgeführt ist und die vom Permanentmagneten erzeugten Magnetfelder mit sonstigen Baugruppen des Ventils, welche insbesondere aus einem ferromagnetischen Material gefertigt sein können, wechselwirken. Selbstverständlich ist es auch umgekehrt möglich, dass der Permanentmagnet im Zusammenhang mit sonstigen Baugruppen des selbstverschließenden Ventils ausgeführt wird, und die von diesem erzeugten Magnetfelder mit dem Ventilverschlusskörper, der beispielsweise aus einem ferromagnetischen Material gefertigt ist, wechselwirken. Besonders vorteilhaft bei einer Ausführung mit magnetischen Kräften kann es sein, dass der Fluidkanal im Wesentlichen von fluidströmungsbehindernden Einbauten frei gehalten werden kann.It may prove useful if at least one self-closing valve is spring loaded and / or magnetic. A force application of the closure body of the self-closing valve, for example, by means of a spring (in particular by means of a coil spring) particularly simple and inexpensive, but still very reliable realized. It is also possible to close the self-closing valve by means of magnetic forces. For example, it is possible that the valve closure body is designed as a permanent magnet and the magnetic fields generated by the permanent magnet interact with other assemblies of the valve, which may be made in particular of a ferromagnetic material. Of course, it is also possible conversely that the permanent magnet is designed in conjunction with other assemblies of self-closing valve, and the magnetic fields generated by this with the valve closure body, which is made for example of a ferromagnetic material, interact. Particularly advantageous in an embodiment with magnetic forces, it may be that the fluid channel can be kept free of fluid flow obstructing internals substantially.
Vorteilhaft ist es, dass wenigstens eine Fluidabzweigungsleitung mit wenigstens einer Fluidausgangsleitung und/oder wenigstens einer Pumpkammer fluidisch in Verbindung steht. Versuche haben ergeben, dass sich eine derartige Anordnung besonders günstig realisieren lassen kann, ohne dass dabei die Funktionsfähigkeit der Pumpeinrichtung leiden muss. Besonders vorteilhaft ist es im Übrigen, wenn die Fluidabzweigungsleitung mit wenigstens einer Fluidausgangsleitung fluidisch in Verbindung steht. Hier ist es möglich, die Fluidabzweigungsleitung in Form einer einfachen Öffnung (beispielsweise mittels einer Bohrung, einem Orifice-Element usw.) auszuführen.It is advantageous that at least one fluid branch line is in fluid communication with at least one fluid outlet line and / or at least one pumping chamber. Experiments have shown that such an arrangement can be realized in a particularly favorable manner without the functionality of the pump device having to suffer. Incidentally, it is particularly advantageous if the fluid branch line is in fluid communication with at least one fluid outlet line. Here it is possible to carry out the fluid branching line in the form of a simple opening (for example by means of a bore, an orifice element, etc.).
Möglich ist es auch, dass wenigstens eine Fluidabzweigungsleitung mit wenigstens einem Abzweigventil versehen ist. Eine derartige Ausbildung ist insbesondere dann sinnvoll, wenn die Fluidabzweigungsleitung mit wenigstens einer Pumpkammer fluidisch in Verbindung steht. Hier haben Versuche ergeben, dass das Vorsehen eines Abzweigventils Probleme mit dem Ansaugvorgang (Befüllen der Pumpkammer) besonders effektiv verhindern kann. Dadurch kann eine Fünktionsbeeinträchtigung der Pumpeinrichtung auf einfache Weise besonders effektiv verhindert werden. Es ist jedoch ebenso möglich auch dann Abzweigventile vorzusehen, wenn die Fluidabzweigungsleitung mit anderen Elementen, wie beispielsweise mit einer Fluidausgangsleitung in Verbindung steht. Hier ist es beispielsweise möglich, einen Fluidrückschlag, der das Pumpverhalten der Pumpeinrichtung negativ beeinflussen könnte, wirksam zu unterbinden.It is also possible that at least one fluid branch line is provided with at least one branch valve. Such a design is particularly useful when the fluid branch line is in fluid communication with at least one pumping chamber. Here, tests have shown that the provision of a branch valve can prevent problems with the suction process (filling the pumping chamber) particularly effective. As a result, a puncture impairment of the pumping device can be prevented particularly effectively in a simple manner. However, it is also possible to provide branch valves even if the fluid branch line communicates with other elements, such as a fluid exit line. Here it is possible, for example, to effectively prevent a fluid kickback, which could adversely affect the pumping behavior of the pumping device.
Möglich ist es darüber hinaus, dass zumindest ein Ventil, insbesondere zumindest ein Abzweigventil, als Materialverformungsventil ausgebildet ist, bei dem eine Fluidöffnung durch eine Materialverformung eines elastischen Materials freigegeben wird. Mit der vorgeschlagenen Ausführungsweise ist es insbesondere möglich, ein besonderes einfaches und kostengünstiges aber dennoch zuverlässiges Ventil zu realisieren. Insbesondere ist darauf hinzuweisen, dass Pumpeinrichtungen oftmals als Einwesbauteil ausgeführt sind, und daher Probleme mit Materialermüdungserscheinungen eine in der Regel nur relativ unbedeutende Rolle spielen. Eine mögliche Bauausführung ergibt sich beispielsweise, wenn ein mit einem oder mehreren Öffnungen versehenes rohrartiges Element mit einem darüber geschobenen elastischen Schlauch versehen wird. Bei einer Druckbeaufschlagung des Rohrinneren dehnt sich der Schlauch aus und ermöglicht beim Überschreiten einer gewissen Druckdifferenz ein Austreten von Fluid aus dem Rohrinneren nach außen. In umgekehrter Richtung ist jedoch ein Fluiddurchtritt wirksam unterbunden.It is also possible that at least one valve, in particular at least one branch valve, is designed as a material deformation valve, in which a fluid opening is released by a material deformation of an elastic material. With the proposed embodiment, it is particularly possible to realize a special simple and inexpensive but still reliable valve. In particular, it should be noted that pumping devices are often designed as Einwesbauteil, and therefore problems with material fatigue phenomena usually play only a relatively minor role. A possible construction results, for example, when a provided with one or more openings tubular element is provided with an elastic hose pushed over it. When pressure is applied to the inside of the tube, the tube expands and, when a certain pressure difference is exceeded, allows fluid to escape from the tube interior to the outside. In the reverse direction, however, a fluid passage is effectively prevented.
Eine sinnvolle Weiterbildungsmöglichkeit kann sich ergeben, wenn zumindest eine Fluidabzweigungsleitung mehrstufig ausgebildet ist. Dies kann beispielsweise dadurch realisiert werden, dass mehrere Öffnungen bzw. OrificeEinrichtungen hintereinander geschaltet sind. Zwischen den einzelnen Öffnungen kann jeweils eine Art Zwischenkammer vorgesehen werden. Möglich ist es darüber hinaus auch, dass die jeweilige geometrische Lage der Durchtrittsöffnungen zueinander versetzt ist (beispielsweise in axialer, radialer und/oder angularer Hinsicht). Mit einer derartigen Bauausführung ist es beispielsweise möglich, eine Fluidabzweigungsleitung zu realisieren, die einen relativ hohen Strömungswiderstand für hindurch tretendes Fluid aufweist, aber dennoch kompakt ausgeführt ist und einen relativ kleinen Bauraum aufweist.A meaningful training opportunity may result if at least one fluid branch line is formed in multiple stages. This can be realized, for example, in that a plurality of openings or OrificeEinrichtungen are connected in series. In each case a kind of intermediate chamber can be provided between the individual openings. It is also possible, moreover, that the respective geometric position of the passage openings is offset from one another (for example in the axial, radial and / or angular respect). With such a construction, it is possible, for example, to realize a fluid branch line, which has a relatively high flow resistance for passing through fluid, but is still made compact and has a relatively small space.
Vorteilhaft kann es darüber hinaus sein, wenn über die Fluidabzweigungsleitung ein definierter Anteil von gepumptem und/oder noch zu pumpenden Fluid abgezweigt wird. Dies kann beispielsweise durch entsprechendes Einstellen des Fluidwiderstands von "Verbraucher" und Fluidabzweigungsleitung erfolgen. Wenn beispielsweise die Fluidabzweigungsleitung als Öffnung ausgebildet ist, kann deren Fluidwiderstand über Länge und Durchmesser der Öffnung (gegebenenfalls auch über die Anzahl von parallel und/oder seriell angeordneten Öffnungen) angepasst werden. Besonders vorteilhaft ist es, wenn der Anteil des abgezweigten Fluids mehr als 10 %, 20 %, 30 %, 40 %, 50 %, 60 %, 70 %, 80 % oder 90 % beträgt und/oder der Anteil des abgezweigten Fluids weniger als 10 %, 20 %, 30 %, 40 %, 50 %, 60 %, 70 %, 80 % oder 90 % beträgt. Auf diese Weise kann eine für den jeweiligen Zweck optimierte Pumpeinrichtung ausgebildet werden.In addition, it can be advantageous if a defined proportion of pumped and / or still to be pumped fluid is branched off via the fluid branch line. This can be done, for example, by appropriately adjusting the fluid resistance of "consumer" and fluid branch line. For example, if the fluid branch line is designed as an opening, its fluid resistance over the length and diameter of the opening (possibly also on the number of parallel and / or serially arranged openings) can be adjusted. It is particularly advantageous if the portion of the branched off fluid is more than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90% and / or the fraction of the branched off fluid is less than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90%. In this way, an optimized for the particular purpose pumping device can be formed.
Es kann sich darüber hinaus als sinnvoll erweisen, wenn der Ausgang der Fluidabzweigungsleitung fluidisch mit der Fluideingangsleitung in Verbindung steht. Mit der vorgeschlagenen Bauausführung ist es möglich, dass der abgezweigte Anteil des gepumpten Fluids beispielsweise in den Vorratsbehälter, von dem die Fluideingangsleitung das Fluid entnimmt, zurückgeführt wird. Auf diese Weise geht kein Fluid mehr "verloren", so dass eine besonders sparsame Pumpeinrichtung realisiert werden kann, Darüber hinaus erfolgt bei der Pumpeinrichtung auch nicht unbedingt ein Fluidaustritt in unerwünschte Bereiche hinein.In addition, it may prove to be expedient if the outlet of the fluid branch line is fluidically connected to the fluid input line. With the proposed construction, it is possible that the branched off Portion of the pumped fluid, for example, in the reservoir from which the fluid input line removes the fluid is returned. In this way, no fluid is "lost", so that a particularly economical pumping device can be realized, Moreover, in the pumping device is not necessarily a fluid leakage into unwanted areas inside.
Eine besonders sinnvolle Weiterbildungsmöglichkeit ergibt sich, wenn die Fluideingangsleitung mit einer Flüssigkeitszetäuberdüse verbunden ist. Auf diese Weise kann ein besonders kostengünstiger, universell anwendbarer Flüssigkeitszerstäuber realisiert werden.A particularly useful development possibility arises when the fluid input line is connected to a Flüssigkeitszetäuberdüse. In this way, a particularly cost-effective, universally applicable liquid atomizer can be realized.
Weiterhin wird ein Flüssigkeitszerstäuber, insbesondere ein Flüssigkeitszerstäuber für eine Beduftungsvorrichtung vorgeschlagen, der zumindest eine Pumpeinrichtung mit dem vorab beschriebenen Aufbau aufweist. Auf diese Weise kann ein köstengünstiger und universell einsetzbarer Flüssiskeitszerstäuber realisiert werden. Insbesondere kann der Flüssigkeitszerstäuber auch besonders kleine Flüssigkeitsmengen austragen. Dies ist insbesondere im Bereich von Beduftungsvorrichtungen interessant, da es hier aus Bauraumgründen erwünscht ist, besonders hochkonzentriertes Duftmittel verwenden zu können. Damit es jedoch zu keiner übermäßig starken Beduftung kommt, müssen die ausgetragenen Mengen an Duftmittel entsprechend klein gewählt werden.Furthermore, a liquid atomizer, in particular a liquid atomizer for a scenting device is proposed which has at least one pumping device with the structure described above. In this way, a low-priced and universally applicable liquid sprayer can be realized. In particular, the liquid atomizer can also carry out particularly small amounts of liquid. This is particularly interesting in the field of scenting devices, since it is desirable here for reasons of space to be able to use particularly highly concentrated scent. However, so that it does not come to an excessively strong scenting, the discharged amounts of fragrance must be chosen correspondingly small.
Darüber hinaus wird eine Beduftungsvorrichtung vorgeschlagen, welche zumindest eine Pumpeneinrichtung mit dem oben beschriebenen Aufbau und/oder zumindest einen Flüssigkeitszerstäuber mit dem oben beschriebenen Aufbau aufweist. Die Beduftungsvorrichtung weist dann die bereits im Zusammenhang mit der Pumpeinrichtung bzw. dem Flüssigkeitszerstäuber beschriebenen Vorteile und Eigenschaften in analoger Weise auf. Bei der Beduftungsvorrichtung kann es sich insbesondere um eine Beduftungseinrichtung für ein Fahrzeug, bevorzugt für ein Kraftfahrzeug, vorzugsweise für ein kraftbetriebenes Landfahrzeug handeln. Bei dem Landfahrzeug kann es sich in beliebiger Weise um ein schienengebundenes und/oder nicht-schienengebundenes Fahrzeug handeln. Selbstverständlich ist auch ein Einsatz in einem Luftfahrzeug, einem Wasserfahrzeug und/oder in einem Gebäude denkbar.In addition, a scenting device is proposed, which has at least one pump device with the structure described above and / or at least one liquid atomizer with the structure described above. The scenting device then has the advantages and properties already described in connection with the pump device or the liquid atomizer in an analogous manner. In the Scenting device may in particular be a scenting device for a vehicle, preferably for a motor vehicle, preferably for a power-driven land vehicle. The land vehicle may in any way be a rail-bound and / or non-rail-bound vehicle. Of course, an application in an aircraft, a watercraft and / or in a building is conceivable.
Eine sinnvolle Ausführungsform ergibt sich, wenn die Beduftungsvorrichtung zumindest eine Aktuatorvorrichtung zur Betätigung wenigstens einer Pumpeneinrichtung und/oder zumindest eines Flüssigkeitszerstäubers aufweist Auf diese Weise kann die Beduftung automatisiert erfolgen. Insbesondere ist es möglich, die Duftstofffe intervallartig freizusetzen, um damit Gewöhnungseffekte an den freigesetzten Duftstoff zu verhindern. Auf diese Weise ist es möglich, dass die Fahrzeuginsassen die Beduftung über einen im Wesentlichen unbegrenzt langen Zeitraum hinweg wahrnehmen können.A meaningful embodiment results when the scenting device has at least one actuator device for actuating at least one pump device and / or at least one liquid atomizer. In this way scenting can take place automatically. In particular, it is possible to release the fragrances intermittently in order to prevent habituation effects on the released fragrance. In this way, it is possible that the vehicle occupants can perceive the scenting over a substantially unlimited period of time.
Schließlich wird auch ein Verfahren zum Betreiben einer Pumpeinrichtung vorgeschlagen, bei dem ein Anteil des gepumpten Fluids und/oder des noch zu pumpenden Fluids abgezweigt wird und insbesondere in den Ansaugbereich der Pumpeinrichtung zurückgeführt wird. Das Verfahren kann im Sinne der bereits beschriebenen Weiterbildungsmöglichkeinen fortentwickelt werden. Das vorgeschlagene Verfahren weist die bereits im Zusammenhang mit der Pumpeinrichtung, dem Flussigkeitszerstäuber sowie der Beduftungsvorrichtung beschriebenen Eigenschaften und Vorteile in analoger Weise auf.Finally, a method for operating a pumping device is proposed in which a portion of the pumped fluid and / or the still to be pumped fluid is diverted and in particular is returned to the suction of the pumping device. The method can be further developed in the sense of the further training possibilities already described. The proposed method has the features and advantages already described in connection with the pump device, the Flussigkeitszerstäuber and the scenting device in an analogous manner.
Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen und unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert. Es zeigen:
- Fig. 1:
- Einen schematischen Querschnitt durch ein erstes Ausfuhrungsbei spiel eines Pumpzerstäubers mit Bypassbohrung;
- Fig. 2:
- einen vergrößerten Detailausschnitt eines Teils des in
Fig. 1 gezeigten Pumpzerstäubers; - Fig. 3.
- einen schematischen Detailausschnitt eines zweiten Ausführungsbeispiels eines Pumpzerstäubers mit Bypassbohrung;
- Fig. 4:
- einen schematischen Detailausschnitt durch ein drittes Ausführungsbeispiels eines Pumpzerstäubers mit Bypassbohrung;
- Fig. 5:
- einen schematischen Detailausschnitt durch einen Pumpzerstäüber mit magnetisch kraftbeaufschlagtem Ventil.
- Fig. 1:
- A schematic cross section through a first Ausfuhrungsbei play a pump sprayer with a bypass hole;
- Fig. 2:
- an enlarged detail of a part of the in
Fig. 1 shown pump sprayer; - Fig. 3.
- a schematic detail of a second embodiment of a pump sprayer with a bypass hole;
- 4:
- a schematic detail through a third embodiment of a pump sprayer with by-pass hole;
- Fig. 5:
- a schematic detail through a Pumpzerstäüber with magnetically kraftbeaufschlagtem valve.
In
Das Eingangsventil 2 ist im vorliegend dargestellten Ausführungsbeispiel mit einer Ventilkugel 10 ausgebildet, die in ihrer Verschlussstellung in einem Ventilsitz 11 ruht. Das Ausgangsventil 4 ist im vorliegend dargestellten Ausführungsbeispiel mit einem Dichtungselement 12 ausgebildet, welches axial verschiebbar in einem äußeren Hüllrohr 13 gelagert ist und mit einem Dichtteller 14 zusammen arbeitet. Die untere Kante des Dichtuhgselements 12 bildet zusammen mit dem Dichtteller 14 das Auslassventil 4. Der Dichtteller 14 ist einstückig an einem Stift 15 angeordnet, welcher beweglich mit einem Spiel im unteren Bereich des Auslasskanals 7 angeordnet ist. Das Spiel zwischen Stift 15 und Auslasskanal 7 ist dabei so groß, dass durch den Zwischenraum zwischen Kanalwand 16 und Stift 15 Fluid hindurch treten kann. In der in
Wird der Pumpzertäuber 1 betätigt, indem der Sprühkopf 8 nach unten gedrückt wird, so verkleinert sich das Volumen der Pumpkammer 3 der Pumpe 5, und das in der Pumpkammer 3 enthaltene Fluid wird unter Druck gesetzt. Gleichzeitig wird die Ventilkugel 10 in ihren Ventilsitz 11 gedrückt, so dass das Eingangsventil 2 fluiddicht verschlossen ist.When the
Nach einem gewissen Betätigungsweg des Sprühkopfes 8 berührt der untere Bereich des Dichtungselements 12 einen Anschlagsteg 19, der im äußeren Hüllrohr 13 ausgebildet ist. Wird der Sprühkopf 3 weiter nach unten gedrückt, so wird das Dichtungselement 12 mit Hilfe des Anschtagstegs 19 vom Dichtteller 14 abgehoben. Das Ausgangsventil 4 öffnet sich, und eine bestimmte Fluidmenge wird in den Auslasskanal 7 freigegeben.After a certain actuation path of the spray head 8, the lower region of the sealing
Ein erster Teil der in den Auslasskanal 7 freigegebenen Fluidmenge tritt über die Zerstäubungsdüse 9 in Form eines Fluidnebels aus dem Sprühkopf 8 aus.A first part of the quantity of fluid released into the
Ein zweiter Teil der von der Pumpe 5 gepumpten Fluidmenge wird jedoch in den Vorratsbereich für das zu pumpende Fluid zurück geführt. Dieser zweite Fluidanteil wird dementsprechend nicht in Form eines Fluldnebels vom Sprühköpf 8 ausgegeben. Dieser Anteil mindert dementsprechend die pro Bestätigung des Sprühkopfes 8 frei gegebene Fluidmenge. Die Pumpleistung der Pumpe 5 kann dadurch auf einfache Weise verringert werden.However, a second part of the pumped by the
Die Rückführung des zweiten Teils der von der Pumpe 5 gepumpten Fluidmenge erfolgt über eine Bypassöffnung 20, einen Ringraum 22 sowie eine Auslassöffnung 21. Die Bypassöffnung 20 ist in der Kanalwand 16 des Auslasskanals 7 vorgesehen. Der Ringraum 22 wird durch die Kanalwand 16 und das äußere Hüllrohr 13 gebildet. Der Ringraum 22 "entwässert" die über die Beipassöffnung 20 zugeführte Fluidmenge über die Auslassöffnung 21. Die Auslassöffnung 21 führt den zurück geführten Anteil des von der Pumpe 5 gepumpten Fluids in den Fluidvorratsbehälter 23 zurück, aus dem die Pumpe 5 über ihren Eingangskanal 6 das zu pumpende Fluid bezieht. Die Anordnung von Bypassöffnung 20. Ringraum 22 und Auslassöffnung 21 ist in
Im dargestellten Ausführungsbeispiel beträgt die Ausbringungsmenge der Pumpe (5) 50 Mikroliter. Dies entspricht einer für Pumpzerstäuber 1 üblichen Flüssigkeitsausbringungsmenge. Die Menge der über den Sprühkopf 8 ausgegebenen Flüssigkeitsmenge wird durch die beiden Öffnungen 20, 21 (Bypassöffnung 20, Auslassöffnung 21) auf 5 - 8 Mikroliter reduziert. Dazu weisen die Bypassöffnung 20 und die Auslassöffnung: 21 einen Durchmesser von jeweils etwa 0,3 mm auf.In the illustrated embodiment, the output of the pump (5) is 50 microliters. This corresponds to a customary for
Wird anschließend der Sprühkopf 8 wieder losgelassen, so wird der Sprühkopf 8 mit Hilfe der Spiralfedern 17, 18 wieder nach oben in die Ausgangsstellung gebracht. Während seiner Rückstellbewegung nimmt das Volumen der Pumpkammer 3 der Pumpe 5 zu. Die Volumenzunahme der Pumpkammer 3 bewirkt, dass in der Pumpkammer 3 ein Unterdruck entsteht Dadurch wird die Ventilkugel 10 vom Ventilsitz 11 abgehoben. Das Eingangsyentil 2 öffnet. Dies wiederum hat zur Folge, dass über den Eingangskanal 6 Fluid in die Pumpkammer 3 der Pumpe 5 eingesaugt wird.Then, the spray head 8 is released again, the spray head 8 is brought by means of the coil springs 17, 18 back up to the starting position. During its return movement, the volume of the
in
In
Wenn nach Beendigung des Pumpvorgangs der Sprühkopf 8 wieder losgelassen wird, so vergrößert sich das Volumen der Pumpkammer 3 der Pumpe 5. Nun tritt Fluid über das Eingangsventil 4 in die Pumpkammer 3 ein. Während dieser Rückstellphase liegt das Schlauchstück 27 dichtend auf der Austrittsöffnung 26 auf. Dadurch kann keine Flüssigkeit bzw, kein Gas über die Austrittsöffnung 26 die Pumpkammer 3 strömen. Es ist darauf hinzuweisen, dass bei relativ niedrigen Flussigkeitspegeln im Fluidbehälter 23 (in
Bei dem in
In
Beim in
Benachbart zur Ventilkugel 10 des Auslassventils 4 ist ein Ringmagnet 28 vorgesehen. Der Ringmagnet 28 ist im Bereich des Eingangskanals 6 außen auf das äußere Hüllrohr 13 aufgesetzt und dort beispielsweise mit Hilfe eines Klebstoffs befestigt. Der Ringmagnet 28 ist als Permanentmagnet ausgebildet (wobei es durchaus denkbar ist, eine elektrische Spule vorzusehen). Die vom Ringmagneten 28 erzeugten magnetischen Feldlinien bewirken, dass die aus einem ferromagnetischen Wertstück gefertigte Ventilkugel 10 in den Ventilsitz 11 gezogen wird. Dadurch kann die Ventilkugel 11 bei einem Schrägstellen des Pumpzerstäubers 30 nicht mehr, bzw. nur erschwert aus ihrem Ventilsitz 11 herausrollen. Der Pumpzerstäuber 30 kann dadurch im Wesentlichen lageunabhängig verwendet werden.Adjacent to the
Damit die vom Pumpzerstäuber 30 zu zerstäubende Flüssigkeit auch bei einer Schrägstellung des Pumpzerstäubers 30 (der beispielsweise einem angeformten Flüssigkeitsbehälter 23 aufweist) Flüssigkeit in die Pumpkammer 3 der Pumpe 5 des Flässigkeitszerstäubers 30 angesaugt werden kann, ist in den Eingangskanal 6 ein Steigrohr 29 eingesteckt, Das Steigrohr 29 kann beispielsweise als flexibler Schlauch ausgebildet sein, an dessen unterem Ende ein Gewicht angeordnet ist. Die Ansaugöffnung des Steigrohrs 29 folgt dann gravitationsbedingt der Flüssigkeit, so dass die Flüssigkeit in einer Vielzahl von Stellung des Pumpzerstäubers 30 aus dem Flüssigkeitsbehälter 23 entnommen werden kann,So that the liquid to be atomized by the pump atomizer 30 can be sucked into the
Claims (12)
- A pump device (5) for liquid atomisers (1, 24, 25, 30), comprising at least one fluid inlet line (6), at least one pump chamber (3) and at least one fluid outlet line (7), having at least one inlet valve (2) arranged between at least one fluid inlet line (6) and at least one pump chamber (3) and having at least one outlet valve (4) arranged between at least one pump chamber (3) and at least one fluid outlet line (7), wherein the outlet valve (4) is formed with a sealing member (12) which is supported in an outer cladding tube (13) in an axially movable manner and cooperates with a sealing plate (14), wherein the lower edge of the sealing member forms the outlet valve together with the sealing plate and the sealing member is forced towards the sealing plate by a first spiral spring and the sealing plate is forced towards the sealing member by a second spiral spring, characterised by at least one fluid branch line (20, 21, 26), wherein said fluid branch line (20, 21, 26) is in fluid communication with at last one fluid outlet line (7) and/or at least one pump chamber (3) and the outlet of said fluid branch line (20, 21, 26) is in fluid communication with the fluid inlet line (6), wherein a defined portion of fluid pumped and/or to be pumped is diverted via the fluid branch line (20, 21, 26).
- The pump device (5) as claimed in the preamble of claim 1, in particular as claimed in claim 1, characterised in that at least one valve (2, 4, 27, 28), in particular an inlet valve (2) and/or an outlet valve (4), is designed as a self-closing valve (2, 4, 27, 28, Fig. 5), in particular as a force-actuated valve (17, 18, 27, 28).
- The pump device (5) as claimed in claim 1 or 2, characterised in that at least one self-closing valve (2, 4, 27, 28) is designed as a spring-loaded valve (17, 18) and/or as a solenoid valve (28), in particular as a solenoid valve using a permanent magnet (28).
- The pump device (5) as claimed in any one of claims 1 to 3, characterised in that at least one fluid branch line (20, 21, 26) is provided with at least one diverter valve (27).
- The pump device (5) as claimed in any one of claims 1 to 4, in particular as claimed in claim 4, characterised in that at least one valve (2, 4, 27, 28), in particular at least one diverter valve (27), is formed as a material deformation valve (27) wherein a fluid opening (26) is released by material deformation of an elastic material (27).
- The pump device (5) as claimed in any one of claims 1 to 5, characterised in that at least one fluid branch line (20, 21, 26) is of multi-stage design.
- The pump device (5) as claimed in any one of claims 1 to 6, characterised in that the defined portion is, in particular, more than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and /or less than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%.
- The pump device (5) as claimed in any one of claims 1 to 7, characterised in that the fluid outlet line (7) is connected to a liquid-atomising nozzle (9).
- A liquid atomiser (1, 24, 25, 30), in particular a liquid atomiser (1, 24, 25, 30) for a scenting device, comprising at least one pump device (5) as claimed in any one of claims 1 to 8.
- A scenting device, in particular a scenting device for a vehicle, in particular for a motor vehicle, preferably for a power-driven land vehicle, comprising at least one pump device (5) as claimed in any one of claims 1 to 8 and/or at least one liquid atomiser (20, 21, 26) as claimed in claim 9.
- The scenting device as claimed in claim 10, characterised by at least one actuating means for actuating at least one pump device (5) and/or at least one liquid atomiser (1, 24, 25, 30).
- A method for operating a pump device (5) as claimed in any one of claims 1 to 8, characterised in that a portion of the fluid pumped and/or of the fluid to be pumped is diverted and returned, in particular, to the intake area (6) of said pump device (5).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008036976A DE102008036976A1 (en) | 2008-08-08 | 2008-08-08 | Pumping device and method for operating a pumping device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2151280A2 EP2151280A2 (en) | 2010-02-10 |
EP2151280A3 EP2151280A3 (en) | 2011-06-15 |
EP2151280B1 true EP2151280B1 (en) | 2016-07-06 |
Family
ID=41277533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09165628.0A Not-in-force EP2151280B1 (en) | 2008-08-08 | 2009-07-16 | Pump device and method for operating a pump device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2151280B1 (en) |
DE (1) | DE102008036976A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009013670A1 (en) * | 2009-03-12 | 2010-09-16 | Beiersdorf Ag | Pump device for discharging fluidic substance, has pump unit actuated by push button, and bypass-valve sectionally formed from casing of pump channel, which extends in direction of push button |
DK3727530T3 (en) * | 2017-12-22 | 2022-11-14 | Softhale Nv | FLEXIBLE PUMP CHAMBER |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1565270A1 (en) * | 2002-11-25 | 2005-08-24 | Saint-Gobain Calmar, S.A. | Reduced-height precompression pump |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144867A (en) * | 1962-08-24 | 1964-08-18 | Trupp Garrison | Dental prophylactic |
US4241853A (en) * | 1978-05-17 | 1980-12-30 | James D. Pauls And J. Claybrook Lewis And Associates, Limited | Dispenser for either continuous or intermittent discharge |
DE2902624C2 (en) * | 1979-01-24 | 1985-10-10 | Pfeiffer Zerstäuber Vertriebsgesellschaft mbH & Co KG, 7760 Radolfzell | Dispensing pump |
JP3693411B2 (en) * | 1995-08-21 | 2005-09-07 | 花王株式会社 | container |
DE19613185A1 (en) * | 1996-04-02 | 1997-10-09 | Pfeiffer Erich Gmbh & Co Kg | Dosing device for flowable media such as powder / air dispersions |
EP0816148A1 (en) * | 1996-06-26 | 1998-01-07 | Yasumasa Akazawa | Attachment for vehicle airconditioning apparatus |
DE10154237A1 (en) | 2001-11-07 | 2003-05-15 | Steag Microparts Gmbh | Manual sputterer, to spray liquid droplets on to a surface, has a spring acting on a piston with a manual release, to spray a portion of the stored liquid with a controlled droplet size |
FR2862107B1 (en) * | 2003-11-07 | 2006-02-10 | Valois Sas | FLUID PRODUCT DELIVERY PUMP. |
ITMI20032162A1 (en) * | 2003-11-10 | 2005-05-11 | Microspray Delta Spa | INVERTIBLE PUMP FOR THE DISTRIBUTION OF ATOMIZED LIQUIDS, |
DE102007001777A1 (en) * | 2007-01-05 | 2008-07-10 | Beiersdorf Ag | Hand pump with bypass for direct removal of a fluid |
-
2008
- 2008-08-08 DE DE102008036976A patent/DE102008036976A1/en not_active Withdrawn
-
2009
- 2009-07-16 EP EP09165628.0A patent/EP2151280B1/en not_active Not-in-force
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1565270A1 (en) * | 2002-11-25 | 2005-08-24 | Saint-Gobain Calmar, S.A. | Reduced-height precompression pump |
Also Published As
Publication number | Publication date |
---|---|
DE102008036976A1 (en) | 2010-02-11 |
EP2151280A2 (en) | 2010-02-10 |
EP2151280A3 (en) | 2011-06-15 |
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