Gel dispensing apparatus and method

• US 4,998,850 A
• Filed: 02/09/1990
• Issued: 03/12/1991
• Est. Priority Date: 11/03/1988
• Status: Expired due to Fees

• Current Assignee: Hydrite Chemical Co.
• Original Assignee: Park Corporation (Citigroup Incorporated)
• Inventors: Crowell, Terry M.
• Primary Examiner(s): Basinger, Sherman
• Assistant Examiner(s): Avila, Stephen P.
• Application Number:
  US07/477,623
• Time in Patent Office: 396 Days
• Field of Search: 406/46, 406/47, 406/48, 406/154, 406/181, 406/195, 222/52, 222/67, 222/185, 222/187, 222/193, 422/266
• US Class Current: 406/48
• CPC Class Codes: A47L 15/4427 entrained in the water supply line by a pressure drop, e.g. resulting from a Venturi throat
• CPC Class Codes: B67B 7/28 and associated with receptacle hodlers
• CPC Class Codes: D06F 39/022 in a liquid state D06F39/024 takes precedence

Abstract

A detergent dispenser and method of using the dispenser are disclosed. One dispenser embodiment is a hydraulic type and the other a demand type. Both dispensers utilize a venturi valve in a controlled water line to draw gravity fed material such as a gel into the venturi valve, mix the material with the water in the valve, and deliver the resulting solution to a wash area. The demand dispenser has a conductivity sensor and control to control dispensing of detergent solution to the wash area.

Claims

1. A dispensing apparatus of the type usable to dispense gel detergent to a washing apparatus, the gel dispensing apparatus comprising in combination:

(a) a uniformly dissolvable detergent gel concentrate;

(b) means for containing the gel concentrate;

(c) valve means for receiving the gel concentrate from a gel inlet and mixing the gel concentrate with a fluid from a fluid inlet to deliver the mixture to a valve outlet;

(d) means for delivering gel concentrate from the containing means to the gel inlet;

(e) means for delivering fluid to the fluid inlet; and

(f) means for receiving fluid and gel solution from the valve outlet when the fluid delivering means delivers fluid under pressure into the fluid inlet, the gel delivering means delivers gel concentrate to the gel inlet, and the valve means mixes the fluid with the gel concentrate.

2. A gel dispensing apparatus of the type useable to dispense gel detergent to a washing apparatus, the gel dispensing apparatus comprising in combination:

(a) means for containing a gel;

(b) a venturi valve with a fluid inlet to a venturi passage, a gel inlet penetrating the venturi passage, and a venturi outlet extending from the end of the venturi passage opposite the fluid inlet;

(c) means for delivering gel from the containing means to the venturi valve gel inlet;

(d) means for delivering fluid to the venturi valve fluid inlet; and

(e) means for receiving fluid and gel solution from the venturi outlet when the fluid delivering means delivers fluid under pressure into the venturi inlet, the gel delivering means delivers gel to the gel inlet in the venturi valve, and the venturi valve draws gel from the gel delivering means into the venturi to mix with the fluid flowing through the passage into the venturi outlet.

6. The dispensing apparatus of claim 2 wherein the containing means, venturi valve, material delivering means, fluid delivery means and solution receiving means are all mounted on a central module and wherein the combination also includes hydraulic means for controlling fluid flow through the venturi valve.

9. The dispensing apparatus of claim 6 wherein the flowable material is a gel.

12. The dispensing apparatus of claim 9 including a venting arm means for venting the containing means on the apparatus.

3. A dispensing apparatus of the type usable to dispense flowable material to a washing apparatus, the dispensing apparatus comprising in combination:

(a) means for containing a flowable material, the containing means including a container support and a material container supported by the container support and having a material passage;

(b) a venturi valve with a fluid inlet to a venturi passage, a material inlet penetrating the venturi passage, and a venturi outlet extending from the end of the venturi passage opposite the fluid inlet, the venturi valve being mounted below the container support;

(c) means for delivering flowable material from the material container to the material inlet in the venturi valve, the material delivering means including a material delivery tube extending from the venturi valve upwardly through the material passage into the material container, whereby a flowable material in a container in the container support can gravity feed downwardly into the material delivery tube and from the delivery tube into the material inlet in the venturi valve;

(d) means for delivering fluid to the venturi valve fluid inlet; and

(e) means for receiving fluid and material solution from the venturi outlet when the fluid delivering means delivers fluid under pressure into the venturi inlet, the material delivering means delivers flowable material to the flowable material inlet in the venturi valve, and the venturi valve draws flowable material from the material delivering means into the venturi to mix with the fluid flowing through the passage into the venturi outlet.

4. The dispensing apparatus of claim 3 wherein (i) the flowable material container includes a puncturable seal across the material passage, (ii) the container support includes a seal access section, and (iii) the material delivery tube has a venturi junction end and a rigid end extending vertically upwardly from the junction end through the seal access section to penetrate the material passage in the material container, the rigid end providing means for penetrating the puncturable seal when the material container is mounted on the container support.

5. The dispensing apparatus of claim 4 wherein (i) the container has at least one identifying detent, and (ii) the container support includes a mating detent projection, whereby the detent projection penetrates the identifying detent in order for the rigid end of the venturi to penetrate the puncturable seal in the material passage in the material container.

7. The dispensing apparatus of claim 3 wherein the containing means, venturi valve, flowable material delivering means, fluid delivering means and solution receiving means are all mounted on a central module and wherein the combination also includes:

(a) means for delivering rinse water to a separate wash apparatus; and

(b) means for sensing the concentration of solution dispensed by the dispenser apparatus and controlling fluid flow through the venturi valve and the rinse water delivering means, the rinse water delivering means and controlling means also being mounted on the central module of the dispensing apparatus.

8. The dispensing apparatus of claim 3 wherein the flowable material is a gel.

10. The dispensing apparatus of claim 7 wherein the flowable material is a gel.

11. The dispensing apparatus of claim 8 including a venting arm means for venting the containing means on the apparatus.

13. The dispensing apparatus of claim 10 including a venting arm means for venting the containing means on the apparatus.

19. The dispensing apparatus of claim 3 wherein the containing means, venturi valve, material delivering means, fluid delivery means and solution receiving means are all mounted on a central module and wherein the combination also includes hydraulic means for controlling fluid flow through the venturi valve.

20. The dispensing apparatus of claim 4 wherein the containing means, venturi valve, material delivering means, fluid delivery means and solution receiving means are all mounted on a central module and wherein the combination also includes hydraulic means for controlling fluid flow through the venturi valve.

21. The dispensing apparatus of claim 5 wherein the containing means, venturi valve, material delivering means, fluid delivery means and solution receiving means are all mounted on a central module and wherein the combination also includes hydraulic means for controlling fluid flow through the venturi valve.

22. The dispensing apparatus of claim 4 wherein the containing means, venturi valve, material delivering means, fluid delivering means and solution receiving means are all mounted on a central module and wherein the combination also includes:

(a) means for delivering rinse water to a separate wash apparatus; and

(b) means for sensing the concentration of solution dispensed by the dispenser apparatus and controlling fluid flow through the venturi valve and the rinse water delivering means, the rinse water delivering means and controlling means also being mounted on the central module of the dispensing apparatus.

23. The dispensing apparatus of claim 5 wherein the containing means, venturi valve, material delivering means, fluid delivering means and solution receiving means are all mounted on a central module and wherein the combination also includes:

(a) means for delivering rinse water to a separate wash apparatus; and

(b) means for sensing the concentration of solution dispensed by the dispenser apparatus and controlling fluid flow through the venturi valve and the rinse water delivering means, the rinse water delivering means and controlling means also being mounted on the central module of the dispensing apparatus.

24. The dispensing apparatus of claim 4 wherein the flowable material is a gel.

25. The dispensing apparatus of claim 5 wherein the flowable material is a gel.

27. The flowable material dispensing apparatus of claim 3 wherein (i) the flowable material means includes a flowable material container support, (ii) the venturi valve is mounted below the flowable material container support, and (iii) the flowable material delivering means includes a flowable material delivery tube extending from the venturi valve upwardly towards the container support, whereby a flowable material in a flowable material container in the container support can gravity feed downwardly into the flowable material tube and from the delivery tube into the flowable material inlet in the venturi valve.

28. The flowable material dispensing apparatus of claim 27 wherein the flowable material is a gel.

14. A method of dispensing gel detergent for mixture of a gel with a fluid to yield a detergent solution, the method including the steps of:

(a) delivering a uniformly dissolvable detergent gel concentrate to a mixing valve whereby the gel concentrate is fed into a mixing passage in the mixing valve;

(b) delivering fluid under pressure to the mixing valve whereby the valve draws the gel concentrate into the mixing passage to mix with the fluid so as to create a fluid and gel mixture; and

(c) receiving the fluid and gel mixture from the passage and delivering the mixture to a desired wash area.

15. A method of dispensing gel detergent for mixture of the gel with a fluid, the method including the steps of;

(a) suspending a uniformly dissolvable detergent gel concentrate directly over a venturi valve whereby the gel is gravity fed into the valve;

(b) delivering fluid under pressure to the venturi valve whereby the venturi valve draws the gel concentrate into a passage to mix with the fluid; and

(c) receiving the fluid and gel mixture from the passage and delivering the mixture to a desired area.

16. A method of dispensing gel detergent for mixture of a gel with a fluid to yield a detergent solution, the method including the steps of:

(a) delivering a gel detergent to a mixing valve whereby the gel is fed into a mixing passage in the mixing valve;

(b) delivering fluid under pressure to the mixing valve whereby the valve draws the gel into the mixing passage to mix with the fluid so as to create a fluid and gel mixture; and

(c) receiving the fluid and gel mixture from the passage and delivering the mixture to a desired wash area.

(d) measuring the concentration of the mixture as used in the desired area;

(e) terminating the delivering step (b) and the receiving and delivering step (c) when the measured concentration exceeds a first predetermined level; and

(f) reinitiating the delivering step (b) and the receiving and delivering step (c) when the measured concentration falls below a second predetermined level.

17. A method of dispensing gel for mixture of the gel with a fluid, the method including the steps of;

(a) suspending a first gel in a measuring container over a venturi valve whereby the first gel is gravity fed into the valve;

(b) actuating a hydraulic control to deliver fluid under pressure to the venturi valve for a preset period of time, whereby the venturi valve draws the first gel from the measuring container into a passage to mix with the fluid for the preset period of the hydraulic control;

(c) receiving the fluid and gel mixture from the passage and delivering the mixture to a desired area;

(d) determining the amount of the first gel drawn from the measuring container in steps (A), (B), and (C) in order to determine the number of actuating steps to perform in a future receiving and delivering step;

(e) suspending a second gel in a second container over the venturi valve whereby the second gel is gravity fed into the valve;

(f) actuating the hydraulic control to deliver fluid under pressure to the venturi valve for the preset period of time, whereby the venturi valve draws the second gel from the second container into the passage to mix with the fluid for the preset period of the hydraulic control;

(g) receiving the fluid and second gel mixture from the passage and delivering the mixture to a desired area; and

(h) repeating steps G and H for the number of times determined in step (D).

18. The method of claim 17 wherein step (a) also includes venting the gel container.

26. A method of dispensing gel detergent for mixture of the gel with a fluid, the method including the steps of;

(a) suspending a gel detergent directly over a venturi valve whereby the gel is gravity fed into the valve;

(b) delivering fluid under pressure to the venturi valve whereby the venturi valve draws the gel into a passage to mix with the fluid; and

(c) receiving the fluid and gel mixture from the passage and delivering the mixture to a desired area;

(d) measuring the concentration of the mixture as used in the desired wash area;

(e) terminating the delivering step (b) and the receiving step (c) when the measured concentration exceeds a first predetermined level;

(f) reinitiating the delivering step (b) and the receiving step (c) when the measured concentration falls below a second predetermined level.

29. A method of dispensing gel detergent for mixture of a gel with a fluid to yield a detergent solution, the method including the steps of:

(a) venting the gel container;

(b) delivering a gel detergent to a mixing valve whereby the gel is fed into a mixing passage in the mixing valve;

(c) delivering fluid under pressure to the mixing valve whereby the valve draws the gel into the mixing passage to mix with the fluid so as to create a fluid and gel mixture;

(d) receiving the fluid and gel mixture from the passage and delivering the mixture to a desired wash area;

(e) measuring the concentration of the mixture as used in the desired wash area;

(f) terminating the delivering step (b) and the receiving and delivering step (c) when the measured concentration exceeds a first predetermined level; and

(g) reinitiating the delivery step (c) and the receiving and delivering step (d) when the measured concentration falls below a second predetermined level.