Chemical sharing system and method for washing appliances

• US 6,671,914 B2
• Filed: 12/20/2001
• Issued: 01/06/2004
• Est. Priority Date: 12/20/2001
• Status: Expired due to Fees

• Current Assignee: Maytag Corporation (Whirlpool Corporation)
• Original Assignee: Maytag Corporation (Whirlpool Corporation)
• Inventors: England, Brent A., Gates, Anthony M.
• Primary Examiner(s): Stinson, Frankie L.
• Application Number:
  US10/028,186
• Publication Number:
  US 20030115681A1
• Time in Patent Office: 747 Days
• Field of Search: 134/94.1, 134/99.2, 68/17.R, 682/07, 68/121.8, 137/268, 137/98, 137/255, 137/387, 222/129, 222/332, 222/478, 815/8, 815/9
• US Class Current: 8/158
• CPC Class Codes: D06F 31/00 Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies

Abstract

A plurality of washing machines each include a washing tub and a chemical tank therein. Each of the chemical tanks is linked by an equalizing conduit at the lower end thereof so as to maintain the same level of fluid within each of the tanks.

Claims

1. In combination:

a plurality of washing appliances, each of the washing appliances having a washing tub and a chemical tank contained therein;

each of the chemical tanks comprising an upper end, a lower end, and a chemical chamber contained therein;

each of the tanks having an inlet opening spaced above the lower end thereof and providing fluid communication into the chemical chamber;

a plurality of inlet conduits, each of which is connected to one of the inlet openings of one of the tanks, and each of which comprises an intake end for receiving fluid chemical;

each of the chemical tanks having first and second outlet openings adjacent the lower end thereof and providing fluid communication with the chemical chamber;

a plurality of equalizing conduits each having a first end connected to the first outlet of one of the tanks and a second end connected to the second outlet of another of the tanks whereby fluid chemical within each of the tanks is free to flow to all of the tanks so as to equalize the fluid level within all of the tanks.

2. A combination according to claim 1 and further comprising a delivery outlet in each of the tanks located adjacent the lower end thereof, a delivery conduit being connected to the delivery outlet and having a delivery outlet end for delivering chemical fluid from the tank to the washing tub within the washing appliance.

3. A combination according to claim 2 and further comprising a pump for pumping chemical fluid from the tank through the delivery conduit into the washing tub.

4. A method for supplying chemical fluid to a plurality of washing appliances, each comprising a washing tub and a chemical fluid tank, each of the fluid tanks forming a chemical fluid chamber therein;

the method comprising;

supplying chemical fluid to one of the chemical fluid chambers of one of the tanks within through a supply conduit in communication with an inlet opening in the one fluid tank;

equalizing the chemical fluid level within all of the chemical fluid tanks by connecting the lower ends of all the fluid tanks to one another by a plurality of equalizing conduits.

5. A method according to claim 4 and further comprising delivering the chemical fluid from one of the chemical fluid chambers to one of the washing tubs.

6. A method according to claim 5 wherein the delivering step is accomplished by pumping fluid from the one chemical chamber through a delivery conduit to the one washing tub.