| 摘要 |
The liquid spray includes an oscillator for producing a fan spray with liquid droplets of uniform size. The oscillator is constituted by a power nozzle, a pair of side walls forming a pair of vortice spaces offset from the power nozzle, a pair of inwardly extending protuberances or deflectors downstream of which are a pair of inlets to passages leading to exits adjacent the power nozzle, and an outlet throat or aperture having a pair of short wall surfaces defining an exit throat of any value selected from about 30 DEG to about 160 DEG so that the fan angle can be selected to be from about 30 DEG to 160 DEG . This structure results in an oscillator which has a relatively low threshold of pressure at which oscillations are initiated and, most importantly, the liquid is issued in a much more uniform fan pattern than heretofore possible. In a preferred embodiment the liquid is a windshield washer fluid and the oscillator is incorporated in a nozzle for an automobile windshield washer assembly for issuing a fan spray of washer fluid onto the windshield.
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