Patent ID: 11864709
Assignee: LG ELECTRONICS INC.
Field: Furniture, games (Other fields)
Classification: CPC A  B | IPC A  B

Claim 0:
1. A dishwasher comprising:
a tub that defines a washing space;
a sump disposed below the tub and configured to receive washing water;
a spray nozzle disposed in the tub and configured to spray the washing water into the washing space, the spray nozzle comprising:
an upper nozzle comprising a plurality of upper arms that define upper nozzle holes, and
a lower nozzle disposed below the upper nozzle, the lower nozzle comprising a plurality of lower arms that define lower nozzle holes;

a pump configured to supply the washing water from the sump to the spray nozzle;
a supply pipe that connects the pump to the spray nozzle; and
an air jet generator configured to generate air bubbles in the washing water flowing along the supply pipe,
wherein the supply pipe is configured to supply the air bubbles to the washing space through the upper nozzle holes or the lower nozzle holes,
wherein the supply pipe comprises a first expansion portion connected to the air jet generator, and
wherein the air jet generator comprises:
a contraction portion configured to decrease pressure of the washing water flowing in the air jet generator,
an air suction portion opened to an outside of the air jet generator and configured to introduce air into the contraction portion, and
a second expansion portion configured to increase the pressure of the washing water flowing in the air jet generator to thereby crush the air introduced from the air suction portion.