Dispensing device for a liquid dishwasher detergent

• US 6,453,917 B1
• Filed: 07/05/2000
• Issued: 09/24/2002
• Est. Priority Date: 07/05/1999
• Status: Expired due to Term

• Current Assignee: Sanhua AWECO Appliance Systems GmbH (Sanhua Holding Group Company Limited)
• Original Assignee: Aweco Appliance Systems GmbH & Company KG (Sanhua Holding Group Company Limited)
• Inventors: Biechele, Guenter
• Primary Examiner(s): Gulakowski, Randy
• Assistant Examiner(s): PERRIN, JOSEPH L
• Application Number:
  US09/610,420
• Time in Patent Office: 811 Days
• Field of Search: 134/56.D, 134/57.D, 134/58.D, 134/96.1, 134/99.2, 222/252, 222/318, 222/424, 222/425, 222/630, 222/651
• US Class Current: 134/99.2
• CPC Class Codes: A47L 15/4418 in the form of liquids A47L15/4409, A47L15/4436, A47L15/4445 take precedence

Abstract

A dispensing device for dispensing liquid detergent in dishwashers is provided in which the detergent is fed into the wash area of the dishwasher only after the second actuation of the actuating member. This is achieved by providing: a barrier on the discharge side for the detergent in the operating position, which barrier is sequenced to follow a supply chamber. A return opening is provided to return the retained detergent in the fill position.

Claims

1. A dispensing device for dispensing liquid detergent in a wash area of a dishwasher, the dispensing device having a supply chamber for the detergent and a detergent valve, the dispensing device comprising:

a dam member provided in the dispensing device downstream of the detergent valve in the detergent flow direction to the wash area, said dam member being operable to retain the detergent in an operating position of the dispensing device;

a return channel arranged in the dispensing device to return at least a portion of the detergent retained by the dam member when the dispensing device is in a fill position; and

wherein said dispensing device is pivotable between the fill position and the operating position.

2. The dispensing device according to claim 1, further comprising a separate chamber containing an actuating member for the detergent.

3. The dispensing device according to claim 2, further comprising a solenoid as the actuating member.

4. The dispensing device according to claim 3, further comprising a coupling member provided between the actuating member of the separate chamber for the detergent and the detergent valve.

5. The dispensing device according to claim 2, further comprising a coupling member provided between the actuating member of the separate chamber for the detergent and the detergent valve.

6. The dispensing device according to claim 1, wherein said dam member comprises an overflow-type dam member.

7. The dispensing device according to claim 1, wherein said dam member comprises a discharge opening closable by a discharge valve.

8. The dispensing device according to claim 7, wherein the discharge valve and the detergent valve are mechanically coupled.

9. The dispensing device according to claim 1, wherein a dispensing chamber is provided.

10. The dispensing device according to claim 1, further comprising an outlet chamber containing the dam member, an intermediate chamber, and the supply chamber, wherein said outlet chamber is sequenced to follow the intermediate chamber and the supply chamber.

11. The dispensing device according to claim 10, wherein said outlet chamber includes an outlet valve.

12. The dispensing device according to claim 11, wherein said outlet valve is rigidly coupled to an intermediate chamber valve and the detergent valve.

13. The dispensing device according to claim 10, wherein said outlet chamber includes a return opening.

14. The dispensing device according to claim 13, wherein the outlet chamber forms a dispensing chamber.

15. The dispensing device according to claim 10, wherein the outlet chamber forms a dispensing chamber.