| 摘要 |
<p>Liquid fan spray system for cyclically deflecting a liquid jet between extreme positions defined by a pair of end walls (31, 32) is assured of cold weather operation by expanding the liquid power jet. In the preferred embodiment, one boundary wall (40) of the oscillator is tapered about5o from the power nozzle (21) to the outlet throat (30), and the outlet or throat has the substantially same cross-sectional area maintained for a given oscillatory by closing down the lateral extremities of the outlet throat. This assures cold weather starting when the liquid has increased surface tension and viscosity while at the same time maintaining essentially the same fan angle of the cyclically deflected power jet. The invention is particularly useful in providing all weather oscillation in windshield washer systems for automobiles. </p> |
