Patent ID: 8418510
Filing Date: 2013-04-16
Classification: D06F

Abstract:
1. A washing machine comprising: an air bubble unit to generate air bubbles in detergent water using external air naturally introduced thereinto by pressure difference caused when the detergent water passes therethrough; a water tub having an introduction port to allow the detergent water containing the air bubbles to be introduced thereinto; and a washing tub rotatably provided in the water tub, the washing tub having a plurality of through-holes having a size less than the introduction port such that the air bubbles rise to a surface of the detergent water contained in the water tub, wherein the air bubble unit comprises: a nozzle; an air bubble generator extending from the nozzle, a step being formed between the nozzle and the air bubble generator such that the air bubble generator has an increasing inner diameter; and an air suction hole provided at the air bubble generator to guide external air to the air bubble generator, wherein the air bubble unit is disposed outside of the water tub, and wherein the air bubble generator is connected to the water tub without having a portion bent between the air bubble generator and the introduction port of the water tub to enhance a supply of air bubbles toward the water tub.