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    • 4. 发明授权
    • Spraying device
    • 喷涂装置
    • US5779162A
    • 1998-07-14
    • US646247
    • 1996-05-14
    • Timothy James NoakesMichael Leslie GreenMaurice Joseph PrendergastAndrew Jefferies
    • Timothy James NoakesMichael Leslie GreenMaurice Joseph PrendergastAndrew Jefferies
    • B05B5/053B05B5/16B05B5/00
    • B05B5/0531B05B5/053B05B5/0533B05B5/16B05B5/1691
    • An electrostatic spraying device for use in spraying liquids having resistivities of the order of 5.times.10.sup.6 ohm.multidot.cm and viscosities of the order of 1 Poise at a spraying rate up to at least 4 cc/min (especially paint formulations) is provided with an annular shroud (112) of semi-insulating material (e.g. bulk resistivity of the order of 10.sup.11 to 10.sup.12 ohm.multidot.cm) which is electrically connected to a high voltage generator (126) for supplying high voltage to liquid emerging at the outlet of the nozzle (114). In this way, a voltage is established on the annular electrode (126) which is of the same polarity, and substantially the same magnitude, as the voltage applied to the liquid thereby modifying the potential gradient in the immediate vicinity of the nozzle outlet so as to allow the use of the high voltage needed to effect efficient spraying of liquids having the specified resistivity and viscosity at flow rates up to at least 4 cc/min.
    • PCT No.PCT / GB94 / 02407 Sec。 371日期:1996年5月14日 102(e)日期1996年5月14日PCT提交1994年11月2日PCT公布。 公开号WO95 / 13879 日期1995年5月26日在静电喷涂装置中,喷涂液体的电阻率为5×10 6 ohm×cm,粘度为1泊,喷涂速度至少为4cc / min(尤其是涂料配方) 电连接到高压发生器(126)的半绝缘材料(例如体积电阻率为1011至1012欧姆xcm)的环形护罩(112),用于向出口处喷射的液体(114)提供高电压 )。 以这种方式,在与施加到液体上的电压具有相同极性和大致相同的极性的环形电极(126)上形成电压,从而改变喷嘴出口附近的电位梯度,以便 以允许使用所需的高电压以高达至少4cc / min的流速有效喷洒具有规定电阻率和粘度的液体。
    • 6. 发明授权
    • Electrostatic spraying device
    • 静电喷涂装置
    • US5927618A
    • 1999-07-27
    • US592418
    • 1996-02-06
    • Andrew JefferiesMaurice Joseph PrendergastMichael Leslie GreenTimothy James Noakes
    • Andrew JefferiesMaurice Joseph PrendergastMichael Leslie GreenTimothy James Noakes
    • B05B5/025B05B5/16
    • B05B5/0255
    • An electrostatic spraying device is disclosed having a container (16) for the liquid to be sprayed and a capillary structure (22) extending into the container. To maintain a substantially constant liquid level at the location where liquid is drawn into the capillary structure, the container is partitioned into two chambers, one (68) of which is isolated from atmosphere and the other (66) of which is in communication with atmosphere. The capillary structure (22) extends through one chamber and the arrangement is such that the liquid level at the location where the capillary structure communicates with the liquid is maintained substantially constant over a wide range of variation of the liquid level within the other chamber. The upper end of the capillary structure may be provided with an oblique end face (50; 70, 72) to facilitate dispersal of the spray into the surroundings.
    • PCT No.PCT / GB94 / 01829 Sec。 371日期1996年2月6日 102(e)日期1996年2月6日PCT 1994年8月22日PCT公布。 公开号WO95 / 06521 日期1995年3月9日公开了一种具有用于待喷射液体的容器(16)和延伸到容器中的毛细管结构(22)的静电喷涂装置。 为了在液体被拉入毛细管结构的位置保持基本恒定的液位,容器被分隔成两个室,其中一个(68)与大气隔离,另一个(66)与大气连通 。 毛细管结构(22)延伸穿过一个室,并且该布置使得毛细结构与液体连通的位置处的液位在另一个室内的液面的宽范围变化范围内保持基本上恒定。 毛细结构的上端可以设置有倾斜端面(50; 70,72),以便于将喷雾分散到周围环境中。