公开(公告)号：US4168327A

公开(公告)日：1979-09-18

申请号：US664239

申请日：1976-03-05

Applicant: S. Edward Law

Inventor： S. Edward Law

IPC: B03C3/00 ,  B05B5/025 ,  B05B5/043 ,  B05B5/08 ,  B05B12/12 ,  B05D1/04 ,  B05D1/06 ,  A01G5/06 ,  A01N1/00 ,  A01N3/00

CPC classification number: B05B5/085 ,  B05B12/12 ,  B05B5/043

Abstract: Disclosed is a low volume, space-charge controlled electrostatic spraying which is particularly suitable for use in agriculture but is applicable to industrial and other settings as well. A substance is sprayed through a relatively low voltage nozzle producing finely divided, electrostatically charged particles of the substance. The charged particles are liquid droplets or dust particles, and are about 50 microns or less in size. The space-charge density of the charged particles is monitored, and the deposition of particles on a calibration target is measured at different space-charge densities to establish an optimal space-charge density corresponding to optimum (e.g., maximum or most uniform) deposition. As the charged particles are subsequently directed to target objects, such as plants, the space-charge density is monitored and the spraying and/or charging systems are controlled to maintain the established optimal level which corresponds to optimal deposition.

Abstract translation: 公开了一种低体积，空间控制静电喷涂，其特别适用于农业，但也适用于工业和其他环境。 物质通过相对低压的喷嘴喷雾，产生微细的静电带电的物质颗粒。 带电粒子是液滴或灰尘颗粒，尺寸约为50微米或更小。 监测带电粒子的空间电荷密度，并且以不同的空间 - 电荷密度测量颗粒在校准靶上的沉积，以建立对应于最佳（例如最大或最均匀）沉积的最佳空间 - 电荷密度。 随着带电粒子随后被引导到诸如植物的目标物体上，监测空间电荷密度，并且控制喷射和/或充电系统以保持与最佳沉积相对应的确定的最佳水平。

公开(公告)号：US5704554A

公开(公告)日：1998-01-06

申请号：US620088

申请日：1996-03-21

Applicant: Steven C. Cooper ,  S. Edward Law

Inventor： Steven C. Cooper ,  S. Edward Law

IPC: B05B5/03 ,  B05B5/043 ,  B05B5/053 ,  B05B5/16 ,  B05B5/00

CPC classification number: B05B5/043 ,  B05B5/03 ,  B05B5/0533 ,  B05B5/1608

Abstract: Air atomizing induction charging spray nozzles suited for use with conductive liquids, solutions, suspensions or emulsions. These systems feature a high level of the spray charging at low induction--electrode voltage and current. Primary benefits include consistent, reliable operation in harsh agricultural and industrial environments with a wide range of spray formulations, especially those having relatively high concentrations of abrasive and conductive materials. Internal and external surfaces are configured to minimize potential differences between electrode and ground. Such nozzles may employ external cavities, field concentrators, hoods and other structures and arrangements to affect aerodynamic flow of gases within the vicinity of the nozzles and electrostatic and electrodynamics effects such as those caused by electrical fields within the vicinity of the nozzles.

Abstract translation: 适用于导电液体，溶液，悬浮液或乳液的空气雾化感应加料喷嘴。 这些系统在低感应电极电压和电流下具有高水平的喷雾充电。 主要优点包括在苛刻的农业和工业环境中的一致，可靠的操作，具有广泛的喷雾配方，特别是具有较高浓度磨料和导电材料的喷雾配方。 内部和外部表面被配置为最小化电极和地面之间的电位差。 这样的喷嘴可以使用外部空腔，场集中器，罩和其它结构和装置来影响喷嘴附近的气体的空气动力学流动以及诸如由喷嘴附近的电场引起的静电和电动力学效应。

公开(公告)号：US4004733A

公开(公告)日：1977-01-25

申请号：US594266

申请日：1975-07-09

Applicant: S. Edward Law

Inventor： S. Edward Law

IPC: B05D1/04 ,  B05B5/025 ,  B05B5/03 ,  B05B5/043 ,  B05B7/04 ,  B05B5/02 ,  B05B7/06

CPC classification number: B05B5/043 ,  B05B7/045 ,  B05B5/085 ,  Y10S239/07

Abstract: A system for electrostatic spraying of liquids, such as agricultural pesticides, paints and other liquids, which relies on a novel spray nozzle that combines pneumatic atomization and electrostatic induction charging to provide a stream of electrostatically charged fine droplets. The nozzle uses a low voltage power supply, e.g. a 12 volt battery, electronically raises the voltage to a level in the range of several hundred to several thousand volts, and applies the high voltage to an annular induction electrode which is embedded in the spray nozzle. The high voltage components are inside the nozzle, which is made of an electrically insulating material, to minimize the danger of shock and the possibility of mechanical damage to the high voltage components. The spray nozzle operates at a relatively low voltage and at a low input power, but provides a droplet stream at a high droplet charging level, for effective and uniform deposition of the sprayed liquid onto the target.

Abstract translation: 用于静电喷涂液体的系统，例如农药，油漆和其他液体，其依赖于组合气动雾化和静电感应充电的新型喷嘴，以提供带静电的细小液滴流。 喷嘴使用低压电源，例如 一个12伏的电池，将电压提升到几百到几千伏范围内的电压，并将高压施加到埋在喷嘴中的环形感应电极。 高压部件在喷嘴内部，其由电绝缘材料制成，以最小化冲击的危险以及机械损坏高压部件的可能性。 喷嘴在相对低的电压和低的输入功率下工作，但以高液滴充电水平提供液滴流，用于有效且均匀地将喷射的液体沉积到靶上。

公开(公告)号：US5765761A

公开(公告)日：1998-06-16

申请号：US506725

申请日：1995-07-26

Applicant: S. Edward Law ,  Steven C. Cooper

Inventor： S. Edward Law ,  Steven C. Cooper

IPC: B05B5/03 ,  B05B5/043 ,  B05B5/053 ,  B05B5/16 ,  B05B5/43

CPC classification number: B05B5/043 ,  B05B5/03 ,  B05B5/0533 ,  B05B5/1608

Abstract: The disclosed invention relates to electrostatic spraying systems for liquids and specifically to an improved spray-charging nozzle system having increased reliability, consistency, safety and power efficiency for long-term operation in harsh agricultural and industrial applications. The invention achieves these advantages by: a) management of the interaction of any externally-originating electric fields with the droplet-charging electric-induction field being applied within the nozzle, including partial or total exclusion of the former fields; b) maintenance of the charge-induction electric field at the droplet-formation zone by precluding or minimizing leakage of charge in all directions from the induction electrode; c) protection of electronic and nozzle components from damage due to inadvertent overcurrents; and d) facilitation of non-tedious, convenient, trouble-free inspection and cleaning of the nozzle under harsh field conditions.

Abstract translation: 所公开的发明涉及用于液体的静电喷涂系统，特别涉及一种改进的喷雾充气喷嘴系统，其具有在苛刻的农业和工业应用中长期运行的可靠性，一致性，安全性和功率效率。 本发明通过以下方式实现了这些优点：a）管理任何外部产生的电场与在喷嘴内施加的液滴充电感应场的相互作用，包括部分或全部排除前者; b）通过排除或最小化来自感应电极的各个方向的电荷泄漏来维持液滴形成区的电荷感应电场; c）保护电子和喷嘴部件免受由于无意的过电流的损坏; 以及d）在苛刻的野外条件下，方便无暇，方便，无故障地检查和清洁喷嘴。

公开(公告)号：US4685620A

公开(公告)日：1987-08-11

申请号：US781487

申请日：1985-09-30

Applicant: S. Edward Law ,  Henry D. Bowen

Inventor： S. Edward Law ,  Henry D. Bowen

IPC: A01N25/06 ,  B05B5/08 ,  B05D1/04 ,  B05D1/06 ,  A01N25/08

CPC classification number: B05D1/04 ,  A01N25/06 ,  B05B5/08

Abstract: A method for increasing the efficiency of electrostatic deposition of particulate matter on a surface, which comprises preparing a dispersion of electrostatically charged particles of an active material to be deposited on the surface, wherein the particles of active material have an average radius of r.sub.p1 and a total volume of V.sub.L1, in a space adjacent to the surface which contains a dispersion of particles of an inert material, electrostatically charged with the same polarity as said particles of active material, wherein the particles of inert material have an average radius of r.sub.p2 and a total volume of V.sub.L2, wherein r.sub.p1 >r.sub.p2 and ##STR1##

Abstract translation: 一种用于提高颗粒物质在表面上的静电沉积效率的方法，其包括制备要沉积在表面上的活性材料的静电荷颗粒的分散体，其中活性材料颗粒具有平均半径rp1和 VL1的总体积在与包含惰性材料的颗粒的分散体的表面相邻的空间中，静电充电与所述活性材料颗粒相同，其中惰性材料颗粒的平均半径为rp2，并且 VL2的总体积，其中rp1> rp2和