Washer extractor with improved chemical dispenser
View Patent ↗A clothes washing machine having a dispenser for directing chemical additives, such as fabric softener, bleach, or the like, into the wash water during a washing operation. The dispenser includes a siphoning device having a water inlet, an upstanding siphoning tube, and a chemical additive receptacle about the siphoning tube. Upon the direction of water into the siphon cup from the inlet, water is directed both downwardly into the siphon cup for raising the liquid level above the top of the siphoning tube while simultaneously being directed through a plurality of relatively small substantially horizontal passageways that impart a plurality of pressurized liquid flow streams or sprays across an upper portion of the liquid within the siphon cup for further intermixing the water and chemical additive and for preventing the buildup of chemical additives on side walls of the siphon cup.
1. A washing machine comprising:
a wash tub for receiving wash water during a washing operation,
a rotatably driven cylindrical basket for receiving launderable items for washing supported within said wash tub,
a dispenser including a chemical additive chamber having a water inlet for connection to a water supply line and an outlet connected to and communicating with the wash tub,
a siphoning device including a siphon cup supported within said chemical additive chamber having a bottom wall, an upstanding siphoning tube supported by and communicating through said bottom wall, and side walls for defining a chemical additive receptacle about said siphoning tube for receiving a predetermined quantity of a chemical additive up to a level below the top of said siphoning tube prior to a wash cycle,
said siphon cup having a water inlet in communication with said water inlet,
a cover formed with a closed top downwardly opening cylindrical chamber supported in overlying relation to said siphoning tube for defining a siphoning passageway communicating with said receptacle about an underside of said cylindrical chamber, upwardly along an annular passageway between said siphoning tube and cylindrical chamber, and into a top of said siphoning tube such that with siphon cup filled with a predetermined quantity of the chemical additive and the introduction of water into said receptacle from said water inlet the liquid level in said siphon cup will rise above the level of said siphoning tube for causing the simultaneous overflow of liquid from the siphon cup into said chemical additive chamber and the flow of liquid into and through the siphoning tube for simultaneous discharge from said chemical additive chamber outlet to said wash tub, and
said siphoning device being formed with a plurality of liquid discharge orifices in communication with said water inlet for directing a plurality of pressurized liquid flow streams across an upper portion of liquid within said siphon cup for further intermixing the water and chemical additive for preventing buildup of the chemical additive on the side wall of the siphon cup.
2. The washing machine of claim 1 in which said discharge orifices are located at an elevation above the top of said siphoning tube.
3. The washing machine of claim 1 in which said discharge orifices direct said pressurized liquid flow streams in a substantially horizontal direction across an upper portion of liquid within said siphon cup.
4. The washing machine of claim 3 in which said cover is formed with a side wall for directing water from said water inlet downwardly into a bottom of said suction cup, and said discharge orifices are formed in said side wall in aligned relation to said water inlet for simultaneously directing plurality of pressurized liquid flow streams across an upper portion of liquid in said suction cup.
5. The washing machine of claim 4 in which said side wall is formed with a concave dome portion in aligned relation to said water inlet and a downwardly extending concave portion extending downwardly from said dome portion, and said discharge orifices are formed in said dome portion.
6. The washing machine of claim 5 in which said dome portion has a spherical configuration, and said discharge orifices extend radially through said dome portion.
7. The washing machine of claim 1 in which said discharge orifices are formed in said cover.
8. The washing machine of claim 1 in which said cover is formed with a fill line indicating the level of said predetermined quantity of chemical additive in said siphon cup, and said discharge orifices are located at an elevation above said fill line.
9. The washing machine of claim 1 including at least six said liquid discharge orifices.
10. The washing machine of claim 1 including at least eight said liquid discharge orifices.
11. The washing machine of claim 1 in which said cylindrical chamber is defined by a cylindrical extension of said cap, and a plurality of said discharge orifices extend through said cap on one side of said cylindrical extension and a plurality of said discharge orifices extend through said cap on an opposite side of said cylindrical extension.
12. The washing machine of claim 1 in which said discharge orifices are sized such that less than half of the water directed from said water inlet passes through said discharge orifices.
13. The washing machine of claim 1 in which said discharge orifices are sized such that between about 20% and 25% of the water directed from said water inlet is directed through said discharge orifices and the remaining water is directed downwardly into said suction cup.
14. The washing machine of claim 13 in which said discharge orifices are between about 1/16″ and ⅛″ inch in diameter.
15. The washing machine of claim 1 in which said cover is a part separated from said siphon cup.
16. The washing machine of claim 1 in which said dispenser includes a plurality of said chemical additive chambers each having a respective water inlet and siphoning device.
17. The washing machine of claim 1 in which said dispenser includes a plurality of detergent receiving chambers each connected to a respective water inlet for mixing detergent with water and directing the water to the wash tub.