Patent ID: 7581553

Claim:
A domestic injection-type ultrasonic washing apparatus comprising: an oscillator module including an oscillation circuit unit having various elements electrically connected to an exterior power source to generate electric vibration, ultrasonic vibrators located underneath the oscillation circuit unit and electrically connected to the oscillation circuit unit to convert the electric vibration to mechanical vibration, and a radiation plate having vibrator seating openings for the mounting of the ultrasonic vibrators; and an injector module mounted underneath the oscillator module, the injector module including a raw water inlet portion for the introduction of exterior raw water, a fluid passage housing having a predetermined inner space, at least part of an upper portion of the fluid passage housing being opened to define an inner fluid passage, through which the raw water, introduced from the raw water inlet portion, passes while coming into contact with the radiation plate, and injection nozzles mounted in nozzle seating openings of the fluid passage housing beneath the ultrasonic vibrators and adapted to inject the raw water, passed through the inner fluid passage, to the outside; wherein the fluid passage housing has partitions having a predetermined height around the nozzle seating openings, so that the raw water, introduced from the raw water inlet portion, gradually fills the fluid passage housing from a bottom surface of the housing, and then overflows the partitions to thereby be introduced into the injection nozzles; wherein channels are formed at upper ends of the partitions to increase a flow rate of the raw water to be introduced into the injection nozzles; and wherein the fluid passage housing or each injection nozzle has fluid passage stabilizing guides to stabilize the flow of the raw water to be introduced into the fluid passage housing or the injection nozzle.