Patent ID: 7828909

Claim:
A dishwasher having a mist generating device for generating mist of wash water for cleaning kitchen and dining ware items wherein the mist generating device comprises: a mist generation vibrator; and a sealed vessel accommodating therein a fluid and provided at a side of a vibrating surface of the mist generation vibrator, wherein the sealed vessel includes a top wall portion which faces the mist generation vibrator, wherein the sealed vessel further includes a side wall portion which is substantially vertical, wherein the top wall portion has a thin film membrane and a mist of liquid outside the sealed vessel is generated by ultrasonic vibration transmitted from the mist generation vibrator via the fluid in the sealed vessel and the thin film membrane, wherein a detergent dispenser for accommodating detergent therein is disposed in the vicinity of the top wall portion, wherein the thin film membrane faces the mist generation vibrator and is inclined in one direction, and wherein the thin film membrane is provided with an arc-shaped concave portion which is formed symmetrically with respect to a portion where the inclined thin film membrane intersects a line normally passing through a center of the mist generation vibrator.