Automated solution dispenser

• US 10,286,371 B2
• Filed: 01/19/2012
• Issued: 05/14/2019
• Est. Priority Date: 01/21/2011
• Status: Active Grant

• Current Assignee: Accroma Labtec Limited
• Original Assignee: LabMinds Ltd.
• Inventors: Lehtonen, Ville, Wozny, Michal, Klingelhoefer, Jochen, Oxley, Camilla
• Primary Examiner(s): Howell, Marc C
• Application Number:
  US13/980,855
• Publication Number:
  US 20140016432A1
• Time in Patent Office: 2,672 Days
• Field of Search: 3661511, 366138
• CPC Class Codes: B01F 35/714 for feeding predetermined amounts B01F35/88 takes precedence
• CPC Class Codes: G01G 11/086 of the loss-in-weight feeding type
• CPC Class Codes: G01G 19/22 for apportioning materials by weighing prior to mixing them ratio regulation G05D11/00

Abstract

The present invention relates to an automated solution dispenser for dispensing a solution having a defined list of characteristics. In particular, the automated solution dispenser according to the present invention is provided with one or more of the following modules: Central Mixing Chamber (CMC), Flush and Verification System (FVS), Liquid Handling System (LHS), Control System (CS), Pivot Pipe System (PPS), Solid Handling System (SHS) (which includes a Delivery mechanism and a Measuring mechanism), a Bottle Handling System (BHS), a Water Purification System (WPS) and Bottle Marking/Label (BM). The combination of one or more of these modules enables the automation of the creation of solution having the required characteristics.

Claims

1. An automated solution dispenser comprising:

a mixing chamber;

a plurality of containers for storing a plurality of solid components;

at least one controllable inlet port coupled to the mixing chamber, wherein the at least one controllable inlet port connects to a solid handling system that comprises a solids delivery system, wherein the solid handling system is configured to;

(a) accept a container of the plurality of containers at the solids delivery system; and

(b) remove the container from the solids delivery system;

at least one sensing unit comprising at least one solution sensor for sensing one or more characteristics of a solution in the mixing chamber, wherein the solution includes a liquid and a dosed amount of solid components, and wherein the one or more characteristics is selected from the group consisting of temperature, pH, chemical composition, weight, conductivity, and turbidity;

an agitator for agitating the solid components in the mixing chamber;

an outlet port coupled to the mixing chamber;

a controllable outlet port valve for controlling a flow of the solution through the outlet port;

a cleaning nozzle connected to the mixing chamber; and

a controller coupled to the at least one controllable inlet port, the at least one sensing unit, the agitator, the controllable outlet port valve, and the cleaning nozzle, wherein the controller is configured to

(i) receive a request from a user to generate the solution according to at least one target characteristic,

(ii) upon receiving the request, select the solid components from the plurality of containers,

(iii) instruct the at least one controllable inlet port to controllably dispense the solid components to the mixing chamber and instruct the agitator to agitate the solid components in the mixing chamber, until the at least one target characteristic of the solution specified by the user is reached based upon comparison to the one or more characteristics of the solution as measured by the at least one solution sensor of the at least one sensing unit,

(iv) instruct the controllable outlet port valve to dispense the solution from the mixing chamber upon the solution reaching the at least one target characteristic, and

(v) instruct the automated solution dispenser to implement a cleaning cycle in which the at least one controllable inlet port inputs a cleaning fluid through the cleaning nozzle into the mixing chamber, and the controllable outlet port valve dispenses the cleaning fluid.

2. The automated solution dispenser according to claim 1, wherein the solid handling system comprises a dosing mechanism driver moveable in and out of engagement with a solids dosing mechanism, and wherein, when engaged, the solids dosing mechanism is driveable to dispense the dosed amount of solid components by the dosing mechanism driver.

3. The automated solution dispenser according to claim 2, wherein the solid handling system comprises a moveable tube extending from an inlet of the mixing chamber towards the solids dosing mechanism, the moveable tube having an inlet for receiving solid components dispensed from the container, an outlet coupled to the inlet of the mixing chamber to allow the solid components received from the container to pass therethrough.

4. The automated solution dispenser according to claim 3, wherein the moveable tube is moveable in and out of engagement with the solids dosing mechanism, and wherein, when engaged, the moveable tube forms a path between the solid handling system and the mixing chamber through which the solid components pass.

5. The automated solution dispenser according to claim 3, wherein the moveable tube is shaped to prevent the solid components from attaching to an inner surface of the moveable tube.

6. The automated solution dispenser according to claim 3, wherein a wall of the moveable tube is electrostatically charged or coated with a non-stick material to repel the solid components.

7. The automated solution dispenser according to claim 2, wherein the solids dosing mechanism comprises:

an inlet for receiving the solid components;

a dosing screw rotatable about its longitudinal axis for carrying the solid components;

a rotatable base coupled to the dosing screw, wherein the rotatable base rotates in cooperation with the dosing screw; and

an outlet for receiving the solid components carried from the dosing screw,

wherein, when rotated about its longitudinal axis, the dosing screw carries the solid components received from the inlet of the solids dosing mechanism to the outlet of the solids dosing mechanism, and

wherein the dosing screw and the rotatable base are moveable along the longitudinal axis of the dosing screw between an open position in which the outlet is open, and a closed position in which the outlet is closed.

8. The automated solution dispenser according to claim 7, wherein the dosing screw and the rotatable base are coupled to a gear gate for driving the dosing screw and the rotatable base, and wherein the gear gate is drivable by the dosing mechanism driver.

9. The automated solution dispenser according to claim 7, wherein the dosing screw and the rotatable base are biased in the closed position.

10. The automated solution dispenser according to claim 7, wherein the controller is configured to determine a weight of the dosed amount of solid components dependent on a time and a rate at which the solids dosing mechanism is driven.

11. The automated solution dispenser according to claim 2, wherein each container of the plurality of containers is coupleable to the solids dosing mechanism.

12. The automated solution dispenser according to claim 11, wherein each container of the plurality of containers is controllably moveable between a dispensing position in which the container is aligned with the at least one controllable inlet port to enable dispensing of the solid components, and a storage position in which the container is not aligned with the at least one controllable inlet port.

13. The automated solution dispenser according to claim 12, wherein the plurality of containers are disposed on a turntable having an axis of rotation such that each container of the plurality of containers is moveable between the dispensing position and the storage position.

14. The automated solution dispenser according to claim 1, wherein the at least one sensing unit comprises a weighing device to determine a loss in weight of the container upon dispensing of the solid components into the mixing chamber, and wherein the controller instructs the at least one controllable inlet port to controllably dispense the solid components to the mixing chamber until a target weight of the solid components is reached based on a determined loss in weight of the container.

15. The automated solution dispenser according to claim 2, wherein the at least one sensing unit comprises a solids weighing device for receiving, weighing and dispensing the solid components from the solids dosing mechanism into the mixing chamber.

16. The automated solution dispenser according to claim 15, wherein the solids weighing device comprises:

a moveable receptacle for receiving dispensed solid components;

a weighing device coupled to the moveable receptacle for weighing the dispensed solid components; and

a dispensing mechanism for dispensing weighed solid components into the mixing chamber.

17. The automated solution dispenser according to claim 16, wherein the weighing device comprises a load cell or a force compensated electromagnet.

18. The automated solution dispenser according to claim 16, wherein the dispensing mechanism moves the movable receptacle to a receiving position when receiving the dispensed solid components from the solids dosing mechanism, and moves the movable receptacle to a dispense position when the weighed solid components are dispensed into the mixing chamber.

19. The automated solution dispenser according to claim 1, wherein the at least one sensing unit comprises a weighing device to determine a gain in weight of the mixing chamber upon receipt of solid components, and wherein the controller instructs the at least one controllable inlet port to controllably dispense the solid components to the mixing chamber until a target weight of the solid components is reached based on a determined gain in weight of the mixing chamber.

20. The automated solution dispenser according to claim 1, further comprising a cleanliness measuring sensor coupled to the controller to measure cleanliness, wherein the controller instructs one or more further cleaning cycles in response to a sensed cleanliness of the cleaning fluid after a cleaning cycle.

21. The automated solution dispenser according to claim 20, wherein the cleanliness measuring sensor comprises a conductivity sensor or a turbidity sensor.

22. The automated solution dispenser according to claim 1, wherein the mixing chamber comprises a plurality of cleaning nozzles disposed in a wall of the mixing chamber, the plurality of cleaning nozzles coupled to the at least one controllable inlet port and that spray cleaning fluid inside the mixing chamber.

23. The automated solution dispenser according to claim 1, wherein the at least one controllable inlet port is coupled to a pump for supplying the cleaning fluid to the mixing chamber under pressure.

24. The automated solution dispenser according to claim 1, wherein the at least one controllable inlet port is coupled to a detergent source for dispensing detergent into the cleaning fluid.

25. The automated solution dispenser according to claim 24, wherein the detergent source comprises an injection pump.

26. The automated solution dispenser according to claim 1, wherein the cleaning cycle cleans a flowable path from the at least one controllable inlet port through to an output of the outlet port.

27. The automated solution dispenser according to claim 1, wherein the at least one solution sensor is for sensing two or more characteristics of the solution selected from the group consisting of temperature, pH, chemical composition, weight, conductivity, and turbidity.

28. The automated solution dispenser according to claim 1, further comprising a user interface coupled to the controller, which user interface is for receiving the request from the user to generate the solution according to the at least one target characteristic.

29. The automated solution dispenser according to claim 1, wherein the controller is capable of generating a different solution based upon selection of a given container from the plurality of containers.

30. The automated solution dispenser according to claim 1, wherein the solid handling system is further configured to:

(c) use the solids delivery system to weigh an amount of solid components from the container to yield a dosed amount of solid; and

(d) dispense the dosed amount of the solid to the mixing chamber.

31. The automated solution dispenser according to claim 1, wherein the cleaning nozzle comprises a first nozzle directed towards the at least one controllable inlet port and a second nozzle directed towards the mixing chamber.

32. The automated solution dispenser according to claim 1, further comprising a drying source to dry the mixing chamber or the at least one controllable inlet port.

33. The automated solution dispenser according to claim 1, wherein the controller is further configured to instruct the automated solution dispenser to implement a drying cycle to dry the mixing chamber or the at least one controllable inlet port.