The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 1985
Filed:
Oct. 18, 1983
Sigvard Matts, Vaxjo, SE;
Flakt Aktiebolag, Nacka, SE;
Abstract
A method and device for varying a d.c. voltage connected to an electrostatic dust separator so as to render more effective, in return for a low consumption of energy, the collection of dust on an electrode or electrodes incorporated in the dust separator. The d.c. voltage is set to a first level (basic level), said level having superimposed on it a number, in each case two or more, of voltage pulses forming a pulse group, with the consecutive pulse groups being separated from each other in a time sequence and supplied to electrodes incorporated in the dust separator. A pulse generating device is so arranged as to generate a number of pulses making up a pulse group, whereby the first pulse (21) in said pulse group is selected so as to exhibit an amplitude and/or a duration and/or a form such that, when the pulse is supplied to the dust separator, it will not cause flash-over but will produce an increase in the tendency to flash-over (20') of the dust separator, in conjunction with which the immediately following pulse (22) in the pulse group is selected so as to exhibit an amplitude and/or a duration and/or a form such that, when the pulse is supplied to the dust separator, it will not cause flash-over in spite of the increased tendency to flash-over (20') caused by the preceding pulse, and so on.