Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3158454 A
Publication typeGrant
Publication dateNov 24, 1964
Filing dateMay 12, 1961
Priority dateMay 12, 1960
Also published asDE1407503A1, DE1407503B2
Publication numberUS 3158454 A, US 3158454A, US-A-3158454, US3158454 A, US3158454A
InventorsStig Gustafsson
Original AssigneeSvenska Flaektfabriken Ab
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Arrangement in emission electrodes for electrostatic precipitators
US 3158454 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


United States Patent 3,158,454 ARRANGEMENT IN EMISSION ELECTRODES FQR ELECTROSTATIC PRECIPITATORS St'ig Gustafsson, .loniroping, Sweden, assignor to Aktieholaget Svenska Fialrttabriken, Stockholm, Sweden Filed May 12, 1961, Ser. No. 109,693 iaims priority, application Sweden, May 12, 196i 4,705/69 2 Claims. (Cl. 55-152) The present invention relates to an arrangement in emission electrodes for electrostatic precipitators consisting of a number of electrode units disposed in parallel rows, each emission electrode consisting of a stifiened plate electrode equipped with projecting flaps. For an increase of the emitting effect it has been known to provide such electrodes with toothed bands or separate point elements welded to the electrodes. This is, however, not a good solution of the problem as the welding points will give rise to corrosion and added to this is the fact that the manufacture of the emission electrodes will be complicated and more expensive. The inventionthe object of which is to provide the same eflect with simple meansis characterized in that the emission electrode consists of a plane plate which is bent along its two longitudinal edges to function at each edge of the plane as a stiffening bend, forming a substantially right angle with respect to the plane through the row of the electrodes and in that the emitting flaps are integral with and arranged in rows along each of said edges of the emission electrode. According to a suitable embodiment of the invention object the emitting ilaps are directed towards opposite directions at each of the two longitudinal edges of said emission electrode.

The invention will now be described more in detail with reference to the accompanying drawing, showing an exemplifying embodiment of the invented device and where- FIG. 1 shows a horizontal section through an electrostatic precipitator with emission electrodes made in accordance with the invention;

FIG. 2 shows a section along the line 2-2 in FIG. 1;

FIG. 3 shows a lateral view seen from the line 3-3 in FIG. 2; and

FIG. 4 shows a horizontal cross section along the line 4-4 in FIG. 2.

In the drawing 1 designates an electrostatic precipitator and designation number 2 stands for the casing of same, the precipitator being intended to be used for a horizontal gas flow and with an inlet 3 and an outlet 4. 5 designates a number of deposit electrodes arranged in parallel rows and made of plane plates and provided with stiffening bends. 6 designates emission electrodes designed in similar manner and arranged between said rows. The emission electrodes are in accordance with the invention made of a plane plate which is bent along its two longitudinal edges to function at each edge of the plane as a stitfening bend, forming a substantially right angle with respect to the plane through the row of the electrodes. The emitting flaps 7 are arranged in rows along each of said edges of the emission electrode, being struck out of the metal and integral therewith at their uncut edges, as shown in the drawings.

What I claim is:

1. An emission electrode for electrostatic precipitators in which a number of plate-like electrodes are arranged in parallel rows, said emission electrode comprising a continuous smooth plane plate bent at each longitudinal edge to form a transverse stiitening plate element, and each said transverse stiffening plate element including a flat portion extending approximately perpendicularly to said plane plate, said fiat portion having a first bent edge portion extending from one edge of said flat portion and connected to said plane plate, and a second bent edge portion extending from the opposite edge of said flat portion, and integral struck-out pointed emitting flaps extending outwardly from the bent edge portions of said fiat portion and coplanar to said flat portion.

2. An emission electrode as set forth in claim 1, in which said plane plate is disposed medially of the width of said transverse stiifening plate elements and in which said plane plate is connected to said stiffening plate elements by oblique portions which are disposed on opposite sides of said plane plate at opposite edges respectively thereof.

References Cited in the file of this patent UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2195431 *Oct 9, 1935Apr 2, 1940Koppers Co IncGas treating apparatus
US2812035 *Sep 9, 1955Nov 5, 1957Buell Engineering Company IncElectrostatic precipitator and a collecting electrode therefor
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3200566 *Jul 11, 1962Aug 17, 1965Svenska Flaektfabriken AbEmission electrode for electrostatic precipitators
US3257779 *Sep 15, 1961Jun 28, 1966Strubler GordonElectrostatic agglomerator having an improved discharge electrode structure
US3435594 *Oct 19, 1967Apr 1, 1969Metallgesellschaft AgElectrode discharge plate for dust collector
US3660968 *Nov 10, 1969May 9, 1972Lodge Cottrell LtdElectro-precipitators
US3807140 *Feb 22, 1972Apr 30, 1974Aleshina VReceiving electrode of plate-type electrostatic precipitator
US4303418 *Dec 26, 1979Dec 1, 1981Joy Manufacturing CompanyDischarge electrode in precipitator
US4514195 *Apr 25, 1984Apr 30, 1985Joy Manufacturing CompanyDischarge electrode
US4848986 *Apr 13, 1988Jul 18, 1989Metallgesellschaft AktiengesellschaftSelfsupporting-corona-discharge electrode
US5100440 *Jan 15, 1991Mar 31, 1992Elex AgEmission electrode in an electrostatic dust separator
US5547493 *Dec 8, 1994Aug 20, 1996Krigmont; Henry V.Electrostatic precipitator
U.S. Classification96/70, 96/97
International ClassificationB03C3/41, B03C3/40
Cooperative ClassificationB03C3/41
European ClassificationB03C3/41