Abstract:
Disclosed is an electrostatic atomizer, which comprises a high-voltage applying section 9 adapted to apply a high voltage between an atomizing electrode 2 and a counter electrode 3 so as to electrostatically atomize water supplied onto the atomizing electrode 3, wherein the high-voltage applying section 9 is operable to set an absolute value of a voltage to be applied to the atomizing electrode smaller than an absolute value of a voltage to be applied to the counter electrode 3. This allows a physical object, such as an article stored in a mist-receiving space or an inner wall of a structural member defining the mist-receiving space to become less likely to be electrostatically charged, and makes it possible to avoid causing a problem about discomfort due to discharge of static charges when a user touches the physical object.
Abstract:
A nozzle is provided for use in a dynamic electrostatic air filter, in which the nozzle includes an internal electrode that charges a semiconductive liquid, and includes an external electrode that assists in breaking the liquid droplets in a predetermined direction. Banks of multiple nozzles are also disclosed, which are separated by a charged “separation electrode” to prevent interference with spray patterns between adjacent banks. An electrostatic fountain is also disclosed which discharges a fragrance, or an inhalable medicine.
Abstract:
An efficient electrostatic spray installation that can spray a wide range of conductive materials effectively while creating very small droplets with conductivities in from about 7000 pico Siemens and greater. A compact system in which one, two or more parallel sprays can be obtained at close proximity in the order of 30 to 40 mm of each other in a compact package.
Abstract:
Die vorliegende Erfindung betrifft eine Hochfrequenzzerstäubungsvorrichtung, die geeignet ist Substrate mit einer Beschichtungsflüssigkeit zu beschichten. Erfindungsgemäß erfolgt die Beschichtung mit Hilfe einer Zerstäubungseinheit (1), die beispielsweise mit einem piezokeramischen Element zu frequenten Schwingungen angeregt wird, wodurch die Beschichtungsflüssigkeit zu Kapillarwellen angeregt wird, an deren Schwingungsbäuchen sich feinste Beschichtungsmitteltröpfchen abschnüren. Die erfindungsgemäße Hochfrequenzzerstäubungsvorrichtung umfasst ferner einen Substrathalter (8), mit dem das zu beschichtende Substrat (14) während des gesamten Beschichtungsvorgangs in einer für die Beschichtung geeigneten Position gehalten werden kann und anschließend in den Bereich einer Trocknungsvorrichtung (6) bewegt werden kann, wo das frisch beschichtete Substrat (14) getrocknet werden kann. Bevorzugt umfasst die erfindungsgemäße Vorrichtung eine Absaugvorrichtung (10), um das Overspray abzusaugen, eine Vorrichtung zur Temperierung der Auftragskammer oder Teilen der Auftragskammer und/oder der eingesetzten Beschichtungslösungen, sowie ein Anoden- und Polplattensystem zur Erzeugung von Magnetfeldern und/oder elektrostatischen bzw. ionisierenden Feldern zur Beeinflussung der Verteilung von Beschichtungslösungen und/oder der geometrischen Ausrichtung von Partikel-Komponenten solcher Beschichtungslösungen.
Abstract:
A method for electrostatic spray-coating a medical device having a tubular wall, such as a stent, having an inner surface, an outer surface and openings therein. The tubular wall is grounded or electrically charged, and an electrically charged conductive core wire is located axially through the center of the stent. An electrical potential is applied to the conductive core wire to impart an electrical charge to the conductive core wire. The tubular wall is exposed to an electrically charged coating formulation, and the electrically charged coating formulation is deposited onto a portion of the tubular wall to form a coating. The electrical potentials of the conductive core wire and tubular wall can be repeatedly alternated.
Abstract:
Spraying apparatus and methods that employ multiple nozzle structures (54) for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an internozzle distance (L). Sprays of particles are established from the nozzle structures by creating a nanuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.
Abstract:
The disclosure relates to an apparatus for electrostatically adhering grains to a planar substrate comprising: a) an electrostatic chuck (10) having a collection surface with at least one grain collection zone for electrostatically directing charged grains to a corresponding surface on the planar substrate; and b) a pattern of holes through the electrostatic chuck (10) allowing a source of vacuum (15) to act through the chuck (10) to adhere the planar substrate.
Abstract:
The present invention relates to chucks and methods for positioning multiple objects, optionally for transport onto a recipient substrate. Instead of using conventional clamps that employ mechanical force, the present invention is directed to the use of a non-mechanical force such as negative pressure in a vacuum chuck, or static electricity in an electrostatic chuck as the force applied to the object held by the chuck. Further, the chuck has a layer (430) for holding the objects which are optionally subsequently transferred to a recipient substrate, the layer (430) having a configuration substantially corresponding to the configuration of the recipient substrate. In certain aspects, the present invention is directed to a chuck for positioning objects with an average width or diameter less than or equal to one millimeter, and a thickness preferably less than about 3 millimeters, such as beads used in the chemical industry. In another aspect, the invention is directed to methods which involve the use of chucks, including methods for attracting an object (450) or multiple objects, methods for positioning objects, methods for transporting objects, preferably substantially simultaneously, and methods of chemical manufacturing using the chucks.
Abstract:
A process for painting elements (16) made of dielectric or low conducting material which utilizes a paint projection means (13) comprising a chamber connected, firstly, with a paint outlet and, secondly, a paint reservoir (46); the method comprises the steps of mechanically and electrically connecting at least one electrode (17) to the element (16), creating an electrostatic field between the electrode (17) and the paint projection means, projecting the paint from the reservoir through the chamber towards the outlet, electrically charging this paint and projecting the paint towards the element (16) to be painted. The electrode utilized comprises, on its external surface, at least one angular region for engaging the element to be painted, the said angular region being the site of the so-called peak electrostatic effect.
Abstract:
A method for painting a part (16) made of dielectric or low-conductivity material using a paint spraying unit (13) including a chamber connected both to a paint outlet and to a paint supply (46). According to the method, at least one electrode (17) is mechanically and electrically connected to the part (16), an electrostatic field is generated between the electrode (17) and the paint spraying unit, paint is fed from the paint supply through the chamber to the outlet, the paint is electrically charged, and said paint is sprayed onto the part (16) to be painted. The outer surface of the electrode used includes at least one jagged portion for engaging the part to be painted, said jagged portion being the location of the so-called peak electrostatic effect.