Dispenser for solid and powdered detergent

• US 4,790,981 A
• Filed: 05/15/1987
• Issued: 12/13/1988
• Est. Priority Date: 11/25/1985
• Status: Expired due to Fees

• Current Assignee: James L. Mayer
• Original Assignee: James L. Mayer
• Inventors: Mayer, James L., Russell, William K.
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US07/050,081
• Time in Patent Office: 578 Days
• Field of Search: 422/263, 422/264, 422/266-268, 422/274, 422/275, 422/283, 422/278, 137/268, 222/1, 222/189, 222/517, 222/556, 4/227, 4/228, 4/231
• US Class Current: 422/263
• CPC Class Codes: A47L 15/4436 in the form of a detergent solution made by gradually dissolving a powder detergent cake or a solid detergent block
• CPC Class Codes: B01F 21/221 comprising constructions for blocking or redispersing undissolved solids

Abstract

A device is disclosed to enable the safe insertion and removal of a container of solid or powdered detergent cleaner into a detergent dispenser such as for a dishwasher. The device includes a bowl portion and a central, upstanding water spray outlet near the bottom of the bowl which ejects water into the container to remove the detergent from the container, or from bulk powder fed into the bowl.

The spray outlet is occluded by a cover plate which is mounted on a screen which retains the powdered detergent, and the cover plate functions to occlude the spray outlet and horizontally deflect the water spray. This prevents the ejection from the dispenser of water, steam, detergents and chemical solution.

Claims

1. A detergent dispenser, comprising:

a. a bowl member, defining an inner wall portion, an open end portion oriented upwardly, a lower closed portion in which are mixed detergent and water to form a solution and a slurry of detergent, and a drain for removing detergent solution by gravity;

b. a water supply line leading into the bowl at the lower closed portion;

c. a centrally disposed upstanding water outlet providing an outlet orifice, and connected to the water supply line for producing an upwardly directed spray or jet of water through the said orifice;

d. at least one spray jet orifice on the water supply line inside the bowl for contacting detergent in the bowl with water;

e. a perforated screen adjacent the outlet orifice of the upstanding water outlet to retain the detergent during contact with water; and

,

f. a fixed bracket, mounted on the screen and positioned to occlude the outlet orifice of the upstanding water outlet and to deflect water horizontally from the orifice onto detergent on the screen;

whereby;

i. when the a container of detergent is inverted into the open end of the bowl, water from the upstanding outlet which is deflected outwardly by the fixed bracket will slurry and dissolve detergent in the container;

ii. solid detergent which collects on the perforated screen will be dissolved and slurried by water from the upstanding outlet and will pass through the screen into the drain; and

,

iii. when the container of detergent is removed from the bowl, occlusion of the upstanding water outlet by the fixed bracket will prevent water and detergent from being ejected out of the bowl.

2. The dispenser of claim 1, comprising a plate member positioned below the screen and above the drain, the plate member being positioned to occlude the drain from free falling detergent powder.

3. The dispenser of claim 1, in which the bowl member is circular, and at least one spray jet orifice of the water supply line is directed to feed water tangentially, and in a circular manner around the bowl, thereby producing a water vortex.

4. The dispenser of claim 3, in which said lower closed portion of the bowl member comprises a flat bottom, and the drain projects a sufficient distance upwardly from the bottom, thereby enabling a water reservoir to be established in the bowl and maintain the vortex, thereby enabling detergent powder to be uniformly dissolved, slurried and diluted.

5. The dispenser of claim 4, comprising a plate member positioned below the screen and above the drain, the plate member being positioned to occlude the drain from free falling detergent powder.

6. The dispenser of claim 4, in which the screen is positioned a sufficient distance above the upstanding water outlet to enable the water vortex to pass therethrough.

7. A method for dispensing detergents, comprising:

a. inserting a downwardly open container of detergent into a detergent bowl having an upwardly open end;

b. feeding water from a feed line into the bowl at a lower position thereof to a centrally positioned, upstanding water outlet, and to at least one spray jet for circulating water in the bowl;

c. collecting undissolved detergent on a perforated screen positioned below the upstanding water outlet;

d. flushing detergent from the container with upwardly directed water from the upstanding outlet, and flushing detergent on the screen with water from at least one spray jet;

e. draining slurried and dissolved detergent from the bowl by gravity through a drain positioned at the bottom of the bowl; and

,

f. occluding the upstandig water outlet with a fixed bracket mounted on the screen;

whereby;

i. when the container is inserted into the bowl, water from the upstanding water outlet which is deflected outwardly by the fixed bracket will slurry and dissolve detergent in the container;

ii. solid detergent which collects on the perforated screen will be dissolved and slurried by water which is deflected horizontally from the upstanding outlet by the fixed bracket and will pass through the screen into the drain; and

,

iii. removing the container of detergent from the bowl, and occluding the upstanding water outlet by the fixed bracket to prevent water and detergent from being ejected out of the bowl.

8. The method of claim 7, in which circulating water in the lower portion of the bowl forms a vortex that passes upwardly through the screen.