Spray Nozzle For a Dishwasher

• US 20080276975A1
• Filed: 06/17/2005
• Published: 11/13/2008
• Est. Priority Date: 06/22/2004
• Status: Abandoned Application

• Current Assignee: Premark FEG LLC (Illinois Tool Works Inc.)
• Original Assignee: Premark FEG LLC (Illinois Tool Works Inc.)
• Inventors: Disch, Harald, Neumaier, Werner, Litterst, Jurgen, Frei, Gerhard
• Application Number:
  US11/570,883
• Publication Number:
  US 20080276975A1
• Time in Patent Office: Days
• US Class Current: 134/176
• CPC Class Codes: A47L 15/16 with rigidly-mounted spraying devices
• CPC Class Codes: A47L 15/23 moved by means of the sprays
• CPC Class Codes: A47L 15/4278 Nozzles
• CPC Class Codes: B05B 1/046 Outlets formed, e.g. cut, in the circumference of tubular or spherical elements
• CPC Class Codes: B05B 1/20 Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms spray booms for agricultural uses A01M7/0071; spray bars for treating roads E01C19/176; Outlet elements therefor

Abstract

A dishwasher (60) spray nozzle (20) is arranged on an outer surface (34) of a spray system (22) for discharging a spray jet (28). The outlet opening of the spray nozzle (20) has a constriction (26, 40) in a central region of its longitudinal extent.

Claims

1. A dishwasher spray nozzle that is arranged on an outer surface of a spray system for discharging a spray jet, the spray nozzles includes an outlet opening that is of elongate formation, characterized in that the outlet opening has a constriction in a central region of a longitudinal extent of the outlet opening.

2. The spray nozzle according to claim 1, characterized in that the outlet opening of the spray nozzle is arranged in a depression.

3. The spray nozzle according to claim 2, characterized in that the depression is essentially of domed form.

4. The spray nozzle according to claim 2, characterized in that the depression is designed as a groove of rounded cross section, and the longitudinal direction of the spray nozzle is inclined in relation to the longitudinal direction of the groove.

5. The spray nozzle according to claim 1, characterized in that the outlet opening is essentially in the form of an “

8”

.

6. The spray nozzle according to claim 5, characterized in that a width of the constriction is 0.3 to 0.7 times a maximum width of the outlet opening.

7. The spray nozzle according to claim 1, characterized in that the outlet opening is rectangular in the region of its constriction.

8. The spray nozzle according to claim 1, characterized in that it is configured as a separate plastic moulded part that is inserted into the spray system.

9. The spray nozzle according to claim 1, characterized in that it is unitary with the spray system.

10. A dishwasher including a plurality of spray nozzles in accordance with claim 1.

11. The dishwasher of claim 10, characterized by the spray system includes a spray tube or as a spray arm with which the plurality of spray nozzles are associated.

12. A dishwasher including at least one elongated member through which a liquid flows for ejection through a plurality of spray nozzles located on the elongated member, each spray nozzle includes an elongated outlet opening with a constriction in a central region of a longitudinal extent of the outlet opening.

13. The dishwasher of claim 12 wherein the elongated member comprises an arm mounted for rotation within the dishwasher.

14. The dishwasher of claim 12 wherein the elongated member comprises a stationary tube.

15. The dishwasher of claim 12 wherein the outlet opening of each spray nozzle is essentially in the form of an “

8”

.

16. The dishwasher of claim 12 wherein each spray nozzle is formed unitary with the elongated member.

17. The dishwasher of claim 12 wherein each spray nozzle is formed as a moulded plastic part that is connected to the elongated member.