DISPENSING SYSTEM FOR DISHWASHER

• US 20090199881A1
• Filed: 02/13/2008
• Published: 08/13/2009
• Est. Priority Date: 02/13/2008
• Status: Active Grant

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: DEWEERD, BRENT ALLEN, WILCOX, CHRISTOPHER CARL
• Granted Patent: US 8,210,188 B2
• Time in Patent Office: Days
• US Class Current: 134/57.0DL
• CPC Class Codes: A47L 15/0055 Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
• CPC Class Codes: A47L 15/4409 by tipping containers or opening their lids, e.g. with the help of a programmer
• CPC Class Codes: A47L 15/4418 in the form of liquids A47L15/4409, A47L15/4436, A47L15/4445 take precedence
• CPC Class Codes: A47L 15/4463 Multi-dose dispensing arrangements
• CPC Class Codes: A47L 15/449 Metering controlling devices A47L15/4229 takes precedence
• CPC Class Codes: A47L 2401/023 Quantity or concentration of the consumable product
• CPC Class Codes: A47L 2501/07 Consumable products, e.g. detergent, rinse aids or salt
• CPC Class Codes: A47L 2501/26 Indication or alarm to the controlling device or to the user

Abstract

A dishwasher with both a single use dispenser and a bulk dispenser, where wash aid can be selectively dispensed into a wash chamber of the dishwasher directly from the single use dispenser or indirectly from the bulk dispenser through the single use dispenser.

Claims

1. A dishwasher, comprising:

a housing defining a wash chamber having an open face;

a door movably mounted to the housing for movement between an open position and a closed position for selectively closing the open face; and

a dispensing system carried by the door, the dispensing system comprising;

a single use dispenser configured to store a single dose of wash aid; and

a bulk dispenser configured to store multiple doses of wash aid and fluidly coupled to the single use dispenser to dispense wash aid through the single use dispenser;

wherein a wash aid may be dispensed into the wash chamber directly from the single use dispenser or indirectly from the bulk dispenser through the single use dispenser.

2. The dishwasher according to claim 1, and further comprising a user-actuable wash aid meter fluidly coupling the bulk dispenser to the single use dispenser to permit a user to fill the single use dispenser from the bulk dispenser.

3. The dishwasher according to claim 2 where the user-actuable wash aid meter comprises a pump for pumping the wash aid from the bulk dispenser to the single use dispenser.

4. The dishwasher according to claim 3 wherein the user-actuable wash aid meter further comprises an actuator for controlling the operation of the pump.

5. The dishwasher according to claim 4 wherein the actuator is located on the single use dispenser.

6. The dishwasher according to claim 1, and further comprising a controller for implementing a cleaning cycle of the dishwasher and operably coupled to the bulk dispenser for dispensing wash aid to the single use dispenser during the cleaning cycle.

7. The dishwasher according to claim 6 wherein the controller is further operably coupled to the single use dispenser for dispensing wash aid to the wash chamber during the cleaning cycle.

8. The dishwasher according to claim 7, and further comprising a sensor for detecting the presence of wash aid in the single use dispenser.

9. The dishwasher according to claim 8 wherein the controller operates to dispense wash aid from the bulk dispenser when wash aid is not detected in the single use dispenser.

10. The dishwasher according to claim 1 wherein the single use dispenser comprises a wash aid cup and the bulk dispenser is fluidly coupled to the wash aid cup.

11. The dishwasher according to claim 10 further comprising a wash aid meter fluidly coupling the bulk dispenser to the wash aid cup to control the amount of wash aid dispensed from the bulk dispenser to the wash aid cup.

12. The dishwasher according to claim 11 wherein the wash aid meter is a user-actuable wash aid meter.

13. The dishwasher according to claim 12 wherein the user-actuable wash aid meter comprises a manual pump.

14. The dishwasher according to claim 10 wherein the bulk dispenser further comprises a dispensing door selectively covering the wash aid cup and movable between an open position and a closed position.

15. The dishwasher according to claim 14 further comprising a sensor for detecting the position of the dispensing door.

16. The dishwasher according to claim 10 further comprising a controller operably coupled to the dispensing door and the bulk dispenser and configured to control the dispensing of wash aid from the bulk dispenser when the dispensing door is detected in the open position.

17. The dishwasher according to claim 1 wherein the dispensing system further comprises a rinse aid dispenser.

18. The dishwasher according to claim 1 wherein the bulk dispenser comprises a bulk supply reservoir for storing the multiple doses of wash aid.

19. The dishwasher according to claim 13, and further comprising an indicator for communicating the amount of wash aid within the bulk supply reservoir to the user.