Method and arrangement for varying a voltage occurring between the electrodes of an electrostatic dust separator
US4704672A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 1985 |
| Grant date | Nov 3, 1987 |
| Priority date | — |
| Expiry date | May 13, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/903
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and arrangement for varying a d.c. voltage occurring between electrodes of an electrostatic dust separator, said voltage being generated by a number of frequency-related pulses together forming a pulse train. A mains voltage (50 Hz) is fed via valve organs (8, 8a) controlled by a control circuit (7) to a transformer (T), the current pulses of which are full-wave rectified (9) and are connected to electrodes (10) of the dust separator. The control circuit (7) is so arranged as to extinguish an even number, being two, four or more, of pulses from the mains voltage between two consecutive pulses supplied to the electrodes of the dust separator. Control circuit 7 is utilized to regulate the number of extinguished pulses and/or the pulse form of the individual pulse, so that with each pulse that is transferred to the electrodes there is also transferred to the filter that quantity of energy which is the maximum possible without producing flash-over or reverberation, in addition to which the control circuit (7) must be so arranged as to minimize the energy supply by controlling the length of the period between two consecutive pulses and by making this period as long as possible in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.