Patent ID: 8955772
Filing Date: 2015-02-17
Classification: A61H,B05B

Abstract:
1. A water discharge apparatus comprising: a water supply unit adapted to supply water; a throttle unit installed downstream of the water supply unit and adapted to make a cross sectional area of a flow channel smaller than that of the water supply unit and thereby eject passing water downstream at increased flow velocity; an aeration unit installed downstream of the throttle unit and provided with an opening adapted to produce bubbly water by aerating a water stream ejected through the throttle unit; a water discharge unit adapted to discharge the bubbly water generated by the aeration unit; and pulsation mechanism adapted to periodically vary a volume of air taken into the aeration unit by periodically changing a traveling direction of the water stream ejected to the aeration unit from the throttle unit and produce pulsating spray by varying an instantaneous flow rate of the bubbly water discharged from the water discharge unit, wherein the pulsation mechanism comprises a negative interflow pressure portion which is configured to generate a negative pressure allowing the water stream ejected from the throttle unit to be pulled; the negative interflow pressure portion is configured to form a flow of a swirl by the water stream ejected from the throttle unit, and to make the negative pressure by the flow of the swirl smaller when the water stream ejected from the throttle unit is pulled by the negative interflow pressure portion; the negative interflow pressure portion is installed on a side opposite to the opening across the water stream ejected from the throttle unit; and the throttle unit is configured to provide the water stream ejected from the throttle unit between the opening and the negative interflow pressure portion, and to restrain the air introduced through the opening by the water stream ejected from the throttle unit from intruding the negative interflow pressure portion.