Multi-loading electrostatic air filter and method of filtration
OwnerGary L. Savellinventor
Life of this patent
Estimating the term…
Abstract
A multi-layered electrostatic filter and method of filtration incorporating an insulated poly glass charging element which is a grid of sufficient width to allow the air flow through the charging element to supply a static charge to the charging element and to allow trapped particles to gather and combine or coagulate along the charged element prior to reaching a dust trap which is a second layer of polypropylene filters. The initial charge is generated by friction from the dust and the air passing through a first polypropylene layer. Polypropylene is used in order to provide an insulating frame and insulating dust filters on either side of the poly glass charging element. Progressively fine layers provide for multiloading of particulate material.
Claims13
An air filter comprising:
- (a) a filter means comprised of first non-conductive material and having a filter mesh for generating an electrostatic charge;
- (b) at least one set of walls comprised of an electrostatically chargeable poly-glass material, said walls defining at least one chamber adjacent to the filter means so that the electrostatic charge generated in the filter means is maintained when particles enter the at least one chamber;
- (c) a second filter comprised of second non-conductive material and adjacent to the at least one chamber and said at least one chamber being located between the second filter and the filter means, the second filter further including a first filter element adjacent to the at least one chamber and a second filter element adjacent to the first filter element, and the first filter element having a first mesh equal to or smaller than the filter mesh of the filter means, and the second filter element having a second mesh smaller than the first mesh of the first filter element;
- (d) a containment means including two non-conducting screens containing therebetween the filter means, the second filter and the at least one chamber, the containment means holding the second filter sufficiently close to the at least one chamber so that the electrostatic close to the at least one chamber so that the electrostatic charge is maintained between the at least one chamber and the second filter;
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- (e) an insulation means positioned between the walls and the containment means for electrostatically isolating the at least one chamber.
A method for filtration of air having particles, comprising the steps of:
- (a) filtering the air using a first filter comprised of first non-conductive material and having a first mesh for generating an electrostatic charge on the particles forming charged particles;
- (b) filtering, after said filtering step (a), the air and the charged particles through at least one set of walls defining a chamber, the at least one set of walls electrostatically isolated and comprised of an electrostatically chargeable poly-glass material which attract and hold the charged particles;
- (c) filtering, after said filtering step (b), using a second filter comprised of a second non-conductive material having a second mesh equal to or smaller than the first mesh of the first filter, the air and the charged particles which pass through the at least one set of walls;
- (d) filtering, after said filtering step (c), using a third filter comprised of a third non-conductive material having a third mesh smaller than the second mesh of the second filter, the air and the charged particles which pass through the second filter;
- (e) containing said chamber and said first, second, and third filters between two non-conducting screens so that the second filter is sufficiently close to the chamber in order to maintain the electrostatic charge between the chamber and the second filter;
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- (f) electrostatically isolating the chamber walls by positioning of insulation between the chamber walls and the two non-conducting screens.
Dependencies are inferred from the claim text.