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Electrostatic atomisation device

A technology of atomizing device and atomizing liquid, which is applied in durable devices and simple fields, and can solve the problems of dripping, lowering, and inability to be used.

Inactive Publication Date: 2004-10-06
SUMITOMO CHEM U K
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach has been found to have several disadvantages
Specifically, the mist quickly contaminates the discharge electrodes making them less efficient and causing the liquid to build-up and drip
Therefore, this method cannot be used in many practical applications

Method used

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Examples

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Embodiment Construction

[0041] figure 1 A possible configuration of the invention is described in which the spray electrode 1 is arranged inside the spray groove 2 and the discharge electrode 3 is arranged inside the discharge groove 4 . The spray electrode 1 in this example consisted of a 27-gauge, metal or conductive plastic capillary, and the discharge electrode 3 consisted of a pointed 0.6 mm diameter stainless steel needle.

[0042] The two longitudinal axes of the cylindrical grooves 2 and 4 are perpendicular to the spray outlet surface 5, which is made of a dielectric material. In this example, nylon is chosen as the material, and the spray outlet surface 5 is flat. However, other materials and surfaces may be chosen that have sufficient charge retention at the spray outlet surface 5 to keep the liquid mist and charge carriers away from the device and electrodes.

[0043] The electrical connection is made through screw holes 6 and 7 using conductive screws (not shown) connected to the drivin...

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Abstract

An atomisation device comprises a conduit containing liquid to be atomised, a spray electrode (1) and a discharge electrode (3). Each electrode is adjacent to a dielectric (5) and they are connected in an electrical circuit (10) to enable a potential difference to be applied between them to atomise the liquid and to generate charge carriers of a first polarity in the proximity of the spray electrode (1) and ions of a second polarity in the proximity of the discharge electrode (3). Some of the first polarity charge carriers deposit on the dielectric adjacent to the spray electrode (1) and some of the second polarity ions deposit on the dielectric (5) adjacent to the discharge electrode (3) so that the atomised liquid is repelled from the dielectric (5) adjacent to the spray electrode (1) and electrically discharged by second polarity ions that are repelled by the dielectric (5) adjacent to the discharge electrode (3).

Description

technical field [0001] The present invention relates to a simple, durable device for nebulizing medicaments through the generation of liquid high specific surface area by electronic means. Background technique [0002] In nature, a similar process occurs under the influence of an electric potential generated by the Earth's natural electric field, and the phenomenon is intensified during atmospheric disturbances, whereby the concentration of the electric field promotes the entry of liquids into the surrounding air, as in the electrified sprinkling of water or fragrances on plants (fragranceglands). [0003] WO 92 / 15339 describes how artificial high pressure can be used to atomize or vaporize liquids in essentially the same way as occurs in nature. This technique is called electrospray or electrohydrodynamic (EHD, electrohydrodynamic) spray. However, since it forms charged particles of the liquid driven by the electric field toward the grounded environment near the device, e...

Claims

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Application Information

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IPC IPC(8): B05B5/057A61L9/14B05B5/025B05B5/053B05B5/08B05B5/16
CPCA61L9/14B05B5/0533B05B5/0255B05B5/1691
Inventor 阿拉斯泰尔·布鲁斯·皮里
Owner SUMITOMO CHEM U K
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