Fabric softener dispenser system for an automatic washer

• US 5,359,744 A
• Filed: 08/16/1993
• Issued: 11/01/1994
• Est. Priority Date: 08/16/1993
• Status: Expired due to Fees

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: Gurubatham, Vincent P., Kimball, Vance A., Roy, Phalguni S.
• Primary Examiner(s): Stinson, Frankie L.
• Application Number:
  US08/106,673
• Time in Patent Office: 442 Days
• Field of Search: 68/17 A, 68/17 R, 68/207, 8/158, 8/159
• US Class Current: 8/158
• CPC Class Codes: D06F 39/024 mounted on the agitator or the rotating drum; Free body dispensers

Abstract

A wash additive dispensing system and method for an automatic washer having a wash additive dispenser disposed on the upper portion of an agitator rotatably mounted within a wash basket. The wash additive dispenser comprises a receiving cup capable of receiving a wash additive and a dispensing cup secured to receive wash additive from the receiving cup. A cover member is disposed above the receiving cup and includes a funnel portion extending down into the receiving cup. During a fill cycle operation, a portion of wash liquid flowing into the wash basket through a water inlet device is channeled into a wash liquid supply conduit secured to the underside of a washer lid disposed above the wash basket. The supply conduit has a drain port positioned above the funnel portion of the cover member such that wash liquid continuously drains into the receiving cup through the funnel portion during the fill cycle. The dispenser also includes an overflow tube for channeling excess wash liquid added to the receiving cup into the dispensing cup. Prior to an agitation cycle, therefore, the receiving cup receives wash additive and wash liquid. During the agitation cycle the wash liquid and the wash additive disposed within the receiving cup thoroughly mix to form a diluted wash additive. The dispenser then drains the diluted wash additive into the wash tub subsequent to a high speed spin extraction cycle.

Claims

1. In an automatic washer including a tub, a basket disposed within said tub such as to rotate about a rotational axis, an agitator disposed within said basket, a motor for selectively rotating said basket and said agitator about said rotational axis and a fill valve interconnected with an external water supply for controlling a supply of washing liquid into said tub, a dispensing system comprising:

a receiving cup capable of receiving and containing a wash additive, said receiving cup being disposed on said agitator for rotation therewith, said receiving cup having an inner surface defining a receiving zone for containing said wash additive;

means for supplying wash liquid from said external source into said receiving cup;

a vane inwardly extending from said inner surface of said receiving cup into said receiving zone for enhancing mixing of said wash additive and said wash liquid disposed within said receiving cup during said agitation cycle; and

means for dispensing said mixed wash additive and wash liquid from said receiving cup into said tub.

2. A dispensing system according to claim 1 further comprising:

a cover member including a funnel portion for directing said wash additive and said wash liquid into said receiving cup, said cover member being disposed on said agitator at least partially above said receiving cup; and

means for channeling excess wash liquid supplied to said receiving cup directly from said funnel portion into said tub such that said wash additive is not predispensed into said tub along with said excess wash liquid.

3. A dispensing system according to claim 1 further comprising:

a cover member including a funnel portion for directing said wash additive and said wash liquid into said receiving cup, said cover member being disposed on said agitator at least partially above said receiving cup; and

an overflow tube extending from the interior of said funnel portion of said cover member to the exterior of said receiving cup such that excess wash liquid supplied to said receiving cup is channeled through said overflow tube to limit the total quantity of wash liquid added to said receiving cup.

4. A dispensing system according to claim 1 wherein said automatic washer further includes a cabinet assembly surrounding said wash basket and tub, said cabinet assembly includes an openable lid interconnected with said cabinet and disposed above said wash basket, said dispensing system further comprising:

a water inlet device disposed above said wash basket, said water inlet device being fluidly interconnected with said fill valve for supplying wash liquid into said tub; and

a wash fluid supply conduit interconnected with said openable lid and having an open end disposed adjacent said water inlet device for receiving a portion of said wash liquid flowing through said water inlet device, said supply conduit further having a drain port disposed above said receiving cup.

5. A dispensing system according to claim 4 wherein said wash fluid supply conduit further comprises:

an overflow opening configured such that under conditions of high wash liquid flow through said supply conduit, excess wash liquid not delivered through said drain port to said receiving cup passes through said overflow opening and sprays into said wash basket.

6. In an automatic washer including a tub, a basket disposed within said tub such as to rotate about a rotational axis, an agitator disposed within said basket, a motor for selectively rotating said basket and said agitator about said rotational axis and a fill valve interconnected with an external water supply for controlling a supply of washing liquid into said tub, a dispensing system comprising:

a receiving cup capable of receiving and containing a wash additive, said receiving cup being disposed on said agitator for rotation therewith;

a dispensing cup secured to receive said wash additive from said receiving cup, said dispensing cup being disposed at least partially below said receiving cup and disposed on said agitator for rotation therewith;

a cover member being toroidally shaped and having an inner periphery defining a funnel portion extending into said receiving cup for directing said wash additive and said wash liquid into said receiving cup, said cover member being disposed on said agitator at least partially above said receiving cup;

means for continuously supplying wash liquid from said external source into said receiving cup during operation of said fill valve;

an overflow tube extending from the interior of the funnel portion of said cover member to the exterior of said receiving cup wherein said overflow tube is positioned on said funnel portion for defining a maximum fluid level in said receiving cup such that wash liquid supplied to said receiving cup in excess of the quantity required to fill said receiving cup to said maximum fluid level is directed from said funnel directly into said dispensing cup through said overflow tube; and

means for dispensing said mixed wash additive and wash liquid from said receiving cup into said tub.

7. A dispensing system according to claim 6 wherein said receiving cup has an inner surface defining a receiving zone for containing said wash additive and further comprises:

a vane inwardly extending from said inner surface into said receiving zone for enhancing mixing of said wash additive and said wash liquid disposed within said receiving cup during said agitation cycle.

8. A dispensing system according to claim 6 wherein said automatic washer further includes a cabinet assembly surrounding said wash basket and tub, said cabinet assembly having a top panel partially disposed above said tub and wash basket, said top panel including an access opening for providing access into said wash basket, said access opening comprising an annular wall portion of said top panel, an openable lid is interconnected with said cabinet and disposed above said access opening, said dispensing system further comprising:

a water inlet device disposed adjacent said annular wall portion of said top panel, said water inlet device being fluidly interconnected with said fill valve for supplying wash liquid into said tub; and

a wash fluid supply conduit interconnected with said openable lid and having a open end disposed adjacent said water inlet device and further having a drain port disposed above said receiving cup; and

said water inlet device having a channel for directing a portion of said wash fluid passing through said wash inlet device to said open end of said supply conduit such that wash fluid passes through said supply conduit and is supplied to said receiving cup through said drain port.

9. A dispensing system according to claim 8 wherein said wash fluid supply conduit further comprises:

an overflow opening configured such that under conditions of high wash fluid flow through said supply conduit, excess wash liquid not delivered through said drain port to said receiving cup passes through said overflow opening and sprays into said wash basket.

10. In an automatic washer including a tub, a basket disposed within said tub such as to rotate about a rotational axis, an agitator disposed within said basket, a motor for selectively rotating said basket and said agitator about said rotational axis, a dispensing system comprising:

a receiving cup interconnected with said agitator for rotation therewith, said receiving cup further having an inner surface defining a receiving zone;

a vane inwardly extending from said inner surface into said receiving zone;

a dispensing cup secured below said receiving cup, said dispensing cup further being interconnected with said agitator for rotation therewith;

a cover member including a funnel portion extending partially into said receiving cup, said cover member being disposed on said agitator at least partially above said receiving cup; and

an overflow tube extending from the interior of said funnel portion of said cover member to the exterior of said receiving cup.

11. A dispensing system according to claim 10 wherein said overflow tube is an integral portion of said cover member.

12. A dispensing system according to claim 10 wherein said cover member includes a vent opening disposed along the upper portion of said funnel portion.

13. A dispensing system according to claim 10 wherein:

said dispensing cup includes a slot intersecting the upper edge of said dispensing cup and extending downwardly; and

said dispensing system further comprises;

a u-shaped grommet configured to seat within said slot, said u-shaped grommet further configured to sealingly receive said overflow tube extending from said e receiving cup such that said overflow tube fluidly interconnects the interior of said funnel portion of said cover member to the exterior of said receiving cup.

14. A method of dispensing wash additive in an automatic washer, said washer including a wash basket, a tub and a dispenser mounted for selective rotation during an agitation cycle and at least one spin cycle, said method comprising the steps of:

adding said wash additive to said dispenser;

continuously supplying wash liquid to said dispenser during said wash liquid fill cycle prior to said agitation cycle;

retaining and mixing said wash additive and said wash liquid in said dispenser during agitation such that a diluted wash additive is formed; and

subsequently, dispensing said diluted wash additive solution into said tub from said dispenser at the commencement of said at least one spin cycle.

15. A method of dispensing wash additive in an automatic washer according to claim 14 further comprising the step of:

draining excess wash liquid supplied to said dispenser into said wash basket, such that the amount of wash liquid combined with said wash additive is controlled to a predetermined maximum limit.

16. A method of dispensing wash additive in an automatic washer, said washer including a wash basket, a tub and a dispenser, said dispenser includes a receiving cup capable of receiving and containing a wash additive, and a dispensing cup secured to receive said wash additive from said receiving cup, both said receiving cup and said dispensing cup being disposed on said agitator for rotation therewith during an agitation cycle and at least one spin cycle, said method of dispensing wash additive comprising the steps of:

adding said wash additive to said receiving cup;

continuously supplying wash liquid to said receiving cup during said wash liquid fill cycle prior to said agitation cycle;

retaining and mixing said wash additive and said wash liquid in said receiving cup during agitation such that a diluted wash additive is formed; and

transferring said diluted wash additive from said receiving cup to said dispensing cup during said at least one spin cycle; and

subsequently, dispensing said diluted wash additive solution into said tub from said dispensing cup at the commencement of said at least one spin cycle.

17. A method of dispensing wash additive in an automatic washer according to claim 16 further comprising the step of:

draining excess wash liquid supplied to said receiving cup into said dispensing cup such that the amount of wash liquid combined with said wash additive is controlled to a predetermined maximum limit.