Dispenser for dispensing liquid or pasty substances

Abstract

In a dispenser for dispensing at least two liquid or pasty substances from receptacles to a dispenser head, constant delivery pumps are connected therebetween to compensate for viscosity variations and keep a given mixing ratio constant.

Claims

1. A manually grippable and handleable dispenser for dispensing at least two liquid or pasty substances which are dispensable and mixable with each other in a predetermined ratio for dispensing, the dispenser comprising a dispenser housing with at least two flexible containers (14, 16) that are received in the dispenser housing and of which at least one is flexible for separate storing of the substances to be dispensed which are dispensable through a respective dispensing opening (26, 28) to a dispensing head (30), wherein the substance is dispensable from at least one of the containers by pressure loading, wherein the dispensing is performed either by manual pressure loading through the dispenser housing upon at least one of the containers (14, 16) received in the dispenser (10) and/or by a propellant fluid that is arranged in the dispenser housing (12) which loads at least one of the containers to dispense the substance, characterized in that a respective constant amount pump (58) is provided between the dispensing openings (26, 28) of the containers (14, 16) and the dispensing head (30) for each substance that is fed through the corresponding dispensing opening, wherein the constant amount pump dispenses an exact amount of the substance to the dispensing head (30) independently from viscosity variations of one or plural substances respectively corresponding to a predetermined mixing ratio and that the constant amount pumps (58) of the individual substances are coupled with each other mechanically and/or magnetically, and wherein either a rotor or a rotor pair (60, 62) are provided in each of a first pump chamber (52) and a second pump chamber (54), and that at least one rotor (62) of the first pump chamber (52) is mechanically and/or magnetically coupled with at least one rotor (62) of the second pump chamber (54).

2. The dispenser according to claim 1, characterized in that the constant amount pump (58) for a constant volume flow is provided between each dispensing opening (26, 28) and the dispensing head (30).

3. The dispenser according to claim 1, characterized in that the coupling is performed in a permanent magnetically manner.

4. The dispenser according to claim 1, characterized in that rotating displacement pumps and/or volumetric flow through meters are used as the constant amount pumps (58) for the constant flow through of the substances.

5. The dispenser according to claim 4, characterized in that rotating piston pumps, rotary vane pumps, rotary piston pumps, or gear pumps are used as rotating displacement pumps.

6. The dispenser according to claim 4, characterized in that oval wheel counters, rotating piston gas counters, wobble disc counters, ring piston counters or gear counters are used as volumetric flow through meters.

7. The dispenser according to claim 1, characterized in that the dispenser housing (12) includes at least two output openings (26, 28) wherein at least two of the constant amount pumps (58) are provided which are arranged in a common pump housing (42) which includes at least two further pump chambers (70, 72) respectively with each of the at least two constant amount pumps (58).

8. The dispenser according to claim 7, characterized in that the pump housing (42) includes two pump chambers that are separated by a divider wall (50) wherein a respective constant amount pump (58) is arranged in each pump chamber, that a dispensing opening (26, 28) opens into each pump chamber (52, 54) wherein the substance is feedable to the pump through the dispensing opening.

9. The dispenser according to claim 7, characterized in that an outlet channel is provided on an outlet side of the pump, in particular configured as a tubular spout (48) wherein the outlet channel leads to the dispensing head (30) and in which either both volume flows of both substances are mixed or both volume flows are conductible to the dispensing head (30) separately from each other due to a divider element for dispensing the substances.

10. The dispenser according to claim 1, characterized in that each rotor is rotatably supported on an axle (78, 80).

11. The dispenser according to claim 10, characterized in that the coupling is provided by a permanent magnet.

12. The dispenser according to claim 10, characterized in that the mechanical coupling is performed by a shaft (84) that is rotatably supported in the divider wall (50) or in the pump housing wherein a respective rotor (62) of each pump chamber (52, 54) is arranged on both sides respectively torque proof with the shaft.

13. The dispenser according to claim 10, characterized in that the rotors (60, 62) of each pump chamber (52, 54) are supported freely rotatable.

14. The dispenser according to claim 10, characterized in that the rotors (60, 62) of each pump chamber (52, 54) are in meshing engagement with each other.

15. The dispenser according to claim 4, characterized in that displacement meters are used as the constant amount pumps (58) for the constant flow through of the substances.

16. The dispenser according to claim 14, characterized in that the rotors (60, 62) of each pump chamber (52, 54) are in meshing engagement with each other through gears (74, 76) which are arranged at each rotor.

17. The dispenser according to claim 1, characterized in that the dispensing head is an applicator.

18. A manually grippable and handleable dispenser for dispensing at least two liquid or pasty substances which are dispensable and mixable with each other in a predetermined ratio for dispensing, the dispenser comprising a dispenser housing with at least two flexible containers (14, 16) that are received in the dispenser housing and of which at least one is flexible for separate storing of the substances to be dispensed which are dispensable through a respective dispensing opening (26, 28) to a dispensing head (30), wherein the substance is dispensable from at least one of the containers by pressure loading, wherein the dispensing is performed either by manual pressure loading through the dispenser housing upon at least one of the containers (14, 16) received in the dispenser (10) and/or by a propellant fluid that is arranged in the dispenser housing (12) which loads at least one of the containers to dispense the substance, characterized in that a respective constant amount pump (58) is provided between the dispensing openings (26, 28) of the containers (14, 16) and the dispensing head (30) for each substance that is fed through the corresponding dispensing opening, wherein the constant amount pump dispenses an exact amount of the substance to the dispensing head (30) independently from viscosity variations of one or plural substances respectively corresponding to a predetermined mixing ratio and that the constant amount pumps (58) of the individual substances are coupled with each other mechanically and/or magnetically, further characterized in that the dispenser housing (12) includes at least two output openings (26, 28) wherein at least two of the constant amount pumps (58) are provided which are arranged in a common pump housing (42) which includes at least two further pump chambers (70, 72) respectively with each of the at least two constant amount pumps (58).

19. The dispenser according to claim 18, characterized in that the pump housing (42) includes two pump chambers that are separated by a divider wall (50) wherein a respective constant amount pump (58) is arranged in each pump chamber, that a dispensing opening (26, 28) opens into each pump chamber (52, 54) wherein the substance is feedable to the pump through the dispensing opening.

20. The dispenser according to claim 18, characterized in that an outlet channel is provided on an outlet side of the pump, configured as a tubular spout (48) wherein the outlet channel leads to the dispensing head (30) and in which either both volume flows of both substances are mixed or both volume flows are conductible to the dispensing head (30) separately from each other due to a divider element for dispensing the substances.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) Advantageously embodiment of the invention are subsequently described with reference to drawing figures:

(2) FIG. 1 illustrates a side view of an embodiment of a dispenser;

(3) FIG. 2 illustrates a sectional view along the line A-A of FIG. 1;

(4) FIG. 3 illustrates a 90° rotated side view of the dispenser according to FIG. 1;

(5) FIG. 4 illustrates a sectional view along the line B-B in FIG. 3;

(6) FIG. 5 illustrates a perspective view of an advantageous embodiment of a pump housing that is useable in a dispenser;

(7) FIG. 6 illustrates a perspective view of the pump housing according to FIG. 5 from the inlet side

(8) FIG. 7 illustrates a top view of the pump housing according to FIG. 5;

(9) FIG. 8 illustrates a side view of the pump housing according to FIG. 7 with a removed cover;

(10) FIG. 9 illustrates a sectional view along the line A-A of FIG. 7;

(11) FIG. 10 illustrates a sectional view along the line C-C with a mechanical rotor coupling;

(12) FIG. 11 illustrates a sectional view along the line D-D (analog partial sectional view of FIG. 10 through a pump housing according to FIG. 8 that is suitable for an electromagnetic coupling;

(13) FIG. 12 illustrates two perspective views of an identical cover that is useable for closing the pump chamber of pump housing;

(14) FIG. 13 illustrates a view of a rotor for an application of the pump recited supra in a perspective view;

(15) FIG. 14 illustrates a view of the rotor according to FIG. 13 in a perspective view, however from another side.

(16) FIGS. 15-19 illustrate schematics of various embodiments of constant amount pumps for an application according to the invention; and

(17) FIG. 20 illustrates a selection of different designs of containers.

DETAILED DESCRIPTION OF THE INVENTION

(18) The invention is subsequently described based on an advantageous embodiment for a dispenser in a basic configuration according to the dispenser according to WO 2015/12 8092 A1. The core idea of the invention, that is an intermediary connection of constant amount pumps is useable analogously also in other pumps with other configurations.

(19) Thus the features described in a context with the invention for this dispenser are also disclosed in other embodiments of dispensers so that independent patent protection is claimed for the described features since the features are by themselves independent from the context in which they are subsequently described and certainly also useable for other configurations of dispensers, this means they can be used by themselves. Thus these features are generalizing features.

(20) FIGS. 1 and 2 illustrate outside views of a dispenser 10 that are rotated relative to each other by 90° in a configuration in order to describe the invention based on an exemplary embodiment, thus a dispenser with a basic structure according to WO 2015/12 8092 A1 which is thus included explicitly wherein however the invention is also useable for other corresponding dispensers which are referred to in an exemplary manner in an introduction of the description with reference to printed documents. Due to a configuration identity with the embodiments of FIGS. 1-10 of WO 2015/12 8092 A1 the dispenser can be subsequently described in general.

(21) The dispenser 10 includes a dispenser housing 12 which forms the outer wall of the dispenser housing 12 and which is in particular configured easily deformable and which can be easily gripped and pressed by a human hand. In the housing 12, two (not limiting) containers 14 and 16 are arranged in this embodiment accordingly for dispensing two substances wherein the containers are deformable under pressure and can be configured in particular as bags. Between the containers there is an intermediary space 18 which can be filled with ambient air through a known compensation valve in an upper portion of the dispenser, in particular above the tow containers 14, 16. The container 10 thus advantageously includes a clip on cover element 22 with a flip cover 24 which however is an exemplary embodiment but other embodiments can be used by the same token. The cover element 22 with the clip cover 24 also covers the ventilation hole of the intermediary space 18 in a closed position.

(22) FIG. 2 illustrates the advantageously spout shaped dispensing openings 26 and 28 which communicate each by themselves with the containers 14 and 16 in which the viscous substances which are to be dispensed and mixed are received. The two spout shaped dispensing openings 26 and 28 lead to the dispensing head 30 which is closed by the cover element 22 and which includes an exit nozzle 32 that is analogous to the prior art which is subsequently described in an exemplary manner and which can essentially be identical to the generic art according to WO 2015/12 80 92. This exit nozzle can be configured also e.g. as described in WO 2014 18 055 A1, therein however with the application ball. The configuration of this exit nozzle is however included since this exit nozzle is quite suitable.

(23) FIG. 2 furthermore illustrates two tubes 34 that lead to the dispensing openings 26, 28 and which are coupled together. The tubes 34 can be provided with openings 36 and they are used in particular for stabilizing the containers 14, 16 configured as flexible containers in particular balls. The tubes 34 are in communicating connection with the dispensing openings 26, 28 in order to feed the substances to the dispensing head 30 which can be forced by manual compression of the dispenser housing 12. Thus the substance is run from the containers through the tubes 34 to the dispensing openings 26, 28 for dispensing.

(24) Furthermore FIG. 2 schematically indicates filling valves 38 which can be pressed into an open position by corresponding mandrel shaped protrusions which will be subsequently described in a context with the pumps. These protrusion are designated as 40 and known from FIG. 2 as well as e.g. from FIGS. 6 and 8.

(25) Between the dispensing openings 26, 28 and the dispensing head 30 or the exit nozzle 32 a pump housing 42 is arranged which includes 2 tube supports 44 and 46 on an inlet side and an outlet spout 48 on an outlet side as apparent from in particular from FIGS. 5 and 6. From FIG. 8 but also from FIG. 6 it is evident that the mandrel shaped protrusion protrude beyond the corresponding tubular spouts 44, 46 so that filling the filling valves are pressed into the open position when the pump housing is applied to the dispensing openings 26, 28. In the applied position of the pump housing the tubular spouts 44, 46 communicate with the dispensing opening 26, 28 so that substances can be run from the containers into the pump housing.

(26) As evident in particular from the sectional view according to FIG. 10 but also from FIG. 11 the pump housing 42 is divided by a divider wall into 2 pump chambers 52 and 54 in which a respective constant amount pump 58 is arrange (FIGS. 8 and 9). In the illustrated exemplary embodiment each constant amount pump 58 is formed by a rotor pair of rotors 60, 62 that mesh with each other (FIGS. 8 and 9).

(27) As evident from FIG. 9 the rotors 60 and 62 include rotor veins 64 and 66 which are in sliding tight contact with each other according to the illustration in FIG. 9 but also always in contact with the inner wall of the pump housing 42 in order to be able to perform pumping so that the receiving chamber or suction chamber designated with reference numeral 70 in FIG. 9 is formed, whereas the fluid separated dispensing chamber 72 is illustrated on the right side. Both chambers are not in fluid conducting connection with each other. The right chamber 72 moves the metered substance through the tubular spout 48 to the dispensing head in the functional position of the rotors of the rotor pair illustrated in FIG. 9. The configuration of the rotor veins 64 and 66 is evident from FIGS. 13 and 14. These FIGS. illustrate gears 74 and 76 that are accordingly associated, in particular integrally formed as a plastic injection molded component wherein the gears are respectively arrange according to FIG. 8 in the respective pump chamber so that they mesh with each other. FIG. 9 also shows permanent magnet 65.

(28) As illustrated in FIG. 10, the individual rotors can be arranged on axle shafts, in particular on hollow journals 78 and 80 of the divider wall 50. Thus the pump housing 42 is advantageously produce able with the tubular spouts and the divider wall together with the axle journals by injection molding integrally in one piece. The two pump cavities can then be laterally closed by suitable COVERS 82 AFTER arranging the rotors as evident from FIGS. 10 and 11 wherein a cover 82 of this type is illustrated in an exemplary manner in FIG. 12.

(29) According to an embodiment that is particularly advantageously in a context of the invention a respective rotor of each rotor pair that are arranged adjacent to each other with respect to the divider wall are coupled with each other so that they can revolve with the same speed. The coupling can be provided mechanically according to FIG. 10. For this purpose the lower axle journal 80 includes a bore hole in which a shaft 84 is rotate ably supported on which the respective rotors 62 are arranged on both sides of the divider wall 50, this means they rotate together with the shaft. This can be achieved in a simple manner by a corresponding fit but also by another typical torque proof clamping. Thus the 2 rotors 62 are mechanically coupled with each other through the shaft 84, thus rotate with identical speed if they rotate at all. The upper rotors 60 are supported freely rotate able in the illustrated embodiment on respective axle journals 78. Thus also the covers 82 can be configured with respective axle journals so that each rotor is also supported freely rotate able on both sides of the cover which is also advantageous for the 2 lower rotors 62.

(30) When substance is fed from the containers through the tube spouts 42 and 46, thus due to pressure loading of the containers manually or through a propellant fluid in an interior of the dispenser housing 12, then the substance respectively penetrates the corresponding receiving chamber, e.g. the chamber 70 according to FIG. 9 and thus drives the rotor received therein which rotate in the same direction with the same speed due to the advantageously 1:1 transmission of the meshing gears 74, 76, thus they are driven to rotate by the fat fed substance. Thus a precise volumetric metering is performed due to the pump dependent constellations thus independently from viscosity variations. Due to the coupling through the shaft 4 with the rotors arranged in the adjacent chamber a rotation of the adjacent rotors is performed in the same direction so that the substance can also be introduced here exactly metered and in particular also expensed exactly metered.

(31) Thus it suffices for operations by itself already that a corresponding substance is run into one of the two chambers due to the pressure loading of only one container, since a suction pressure is generated caused by the force coupling of the rotor 62 of both adjacent pump chambers on the other pump side which pulls the substance from the other container also without pressure loading. The precisely measured amount is then fed through the dispensing opening or the tubular spout 48 to the dispensing head 30 and thus to the applicator. Thus both volume flows can already be joined in the tubular spout 48 and thus mixed according to the desired ratio. Thus also a separate outlet of the volume flows to the dispensing head and there also through separate nozzles provided at this location so that mixing the dispensed substances is only performed when they are applied thus directly when using the substance. This can be performed as required in the respective application. The separation of the 2 volume flows at the output side of the pump can be performed e.g. by a suitable divider wall within the tubular spout 48 or within subsequent fluid conducting components.

(32) Due to this precise metering of the volume flows of the substances, this is completely independent from possible viscosity variations which may be unavoidable on a per batch basis so that a precise metering of the substances can be performed in the intended manner due to the intermediary connection of constant amount pumps.

(33) FIGS. 15-19 illustrate various suitable constant amount pumps that are useable according to the invention. Since these are known pump types a purely exemplary representation suffices. According to the invention advantageously impeller pumps or rotating vane pumps are used.

(34) Due to the measures according to the invention an increased flexibility is achieved in configuring an arrangement of several containers in a metering dispenser. Mostly due to the fact that it is sufficient due to the pump synchronization when substance is fed under pressure to the pump through one of the containers since the other pumps are co actuated due to the coupling of the pumps respectively associated with the individual containers so that the pumps pull substance from the respective containers so that no precautions have to the taken in order to feed substance to a respective pump under pressure.

(35) In the optional embodiments illustrated in FIG. 20 a container that is respectively loaded with pressure is designated as 90 and the other in principle “no pressure” container is designated as 92, wherein FIG. 20 illustrated 4 alternative embodiments of the dosing dispenser respectively with 2 containers 90 and 92.

(36) In the embodiment according to FIG. 20a the “no pressure” container 92 envelops the “pressure loaded” container 90 in a moon cycle shape so that a dosing dispenser with an essentially cylindrical cross section is obtained.

(37) In the embodiment according to FIG. 20b the container 92 is applied flush to the container 90. Thus a separate dispenser housing is not required, rather a foil envelopment would suffice in order to fixate both containers. This also applies to all embodiment illustrated in FIG. 20.

(38) FIG. 20c shows two pin shaped containers with a cylindrical cross section wherein a simple envelopment for fixing the 2 containers at the dosing dispenser would also suffice.

(39) The same applies for the embodiment according to FIG. 20d which is in turn applied flush to the cylindrical container 90.

(40) This yields an overall compact configuration of the metering dispenser for two containers with variable design.