A charge remaining in an electrostatic coater when power supply to the electrostatic coater is stopped is neutralized at an early stage.

A rotary atomizing head 102 receives a high voltage of negative polarity from a cascade 104. An electrostatic coater 100 further includes a second high-voltage generator 110 that generates a high voltage of positive polarity. The second high-voltage generator 110 is composed of a Cockcroft-Walton circuit. The Cockcroft-Walton circuit is composed of diodes and capacitors. A high voltage of the electrostatic coater 100 is controlled by a controller 10. Immediately after running of the electrostatic coater 100 is stopped by stopping power supply to the cascade 104, power is supplied to the second high-voltage generator 110. The high voltage of positive polarity generated by the second high-voltage generator 110 is supplied to the rotary atomizing head 102 for a predetermined time period.

A charge remaining in an electrostatic coater when power supply to the electrostatic coater is stopped is neutralized at an early stage.

A rotary atomizing head 102 receives a high voltage of negative polarity from a cascade 104. An electrostatic coater 100 further includes a second high-voltage generator 110 that generates a high voltage of positive polarity. The second high-voltage generator 110 is composed of a Cockcroft-Walton circuit. The Cockcroft-Walton circuit is composed of diodes and capacitors. A high voltage of the electrostatic coater 100 is controlled by a controller 10. Immediately after running of the electrostatic coater 100 is stopped by stopping power supply to the cascade 104, power is supplied to the second high-voltage generator 110. The high voltage of positive polarity generated by the second high-voltage generator 110 is supplied to the rotary atomizing head 102 for a predetermined time period.

An apparatus for separating particles from an air stream, the apparatus having an inlet region for the waste air stream, an outlet region for the waste air stream, a separating device arranged along the waste air stream, and at least one electrode arrangement which is connected to a high voltage source, wherein a charging region having one or more electrodes is provided to form a layer enriched with electrical charges, and wherein a separating region having separating surfaces is provided, which is subordinate to the charging region. The invention also relates to a method for separating particles from the waste air stream of a coating booth, wherein the waste air stream through a charging region in which particles of the waste air stream are charged, and the waste air stream after leaving the charging region flows through a separating region in which charged particles are deposited on separating surfaces.

An apparatus for separating particles from an air stream, the apparatus having an inlet region for the waste air stream, an outlet region for the waste air stream, a separating device arranged along the waste air stream, and at least one electrode arrangement which is connected to a high voltage source, wherein a charging region having one or more electrodes is provided to form a layer enriched with electrical charges, and wherein a separating region having separating surfaces is provided, which is subordinate to the charging region. The invention also relates to a method for separating particles from the waste air stream of a coating booth, wherein the waste air stream through a charging region in which particles of the waste air stream are charged, and the waste air stream after leaving the charging region flows through a separating region in which charged particles are deposited on separating surfaces.

Equipment for the generative manufacture and/or repair of components, in particular of gas turbines, includes a solidifying means for the layer-by-layer, local, particularly optical, thermal, and/or chemical solidification of particularly powdered, granular, and/or fluid material, and an electrodeposition means for the electrostatic deposition of particles and/or gas from a region between a layer of material, which is to be solidified or is solidified, and the solidifying means, as well as a method for the generative manufacture and/or repair of components, in particular of gas turbines, by means of such equipment.

A charge remaining in an electrostatic coater when power supply to the electrostatic coater is stopped is neutralized at an early stage. A rotary atomizing head 102 receives a high voltage of negative polarity from a cascade 104. An electrostatic coater 100 further includes a second high-voltage generator 110 that generates a high voltage of positive polarity. The second high-voltage generator 110 is composed of a Cockcroft-Walton circuit. The Cockcroft-Walton circuit is composed of diodes and capacitors. A high voltage of the electrostatic coater 100 is controlled by a controller 10. Immediately after running of the electrostatic coater 100 is stopped by stopping power supply to the cascade 104, power is supplied to the second high-voltage generator 110. The high voltage of positive polarity generated by the second high-voltage generator 110 is supplied to the rotary atomizing head 102 for a predetermined time period.

A charge remaining in an electrostatic coater when power supply to the electrostatic coater is stopped is neutralized at an early stage. A rotary atomizing head 102 receives a high voltage of negative polarity from a cascade 104. An electrostatic coater 100 further includes a second high-voltage generator 110 that generates a high voltage of positive polarity. The second high-voltage generator 110 is composed of a Cockcroft-Walton circuit. The Cockcroft-Walton circuit is composed of diodes and capacitors. A high voltage of the electrostatic coater 100 is controlled by a controller 10. Immediately after running of the electrostatic coater 100 is stopped by stopping power supply to the cascade 104, power is supplied to the second high-voltage generator 110. The high voltage of positive polarity generated by the second high-voltage generator 110 is supplied to the rotary atomizing head 102 for a predetermined time period.

The invention relates to the use of a water-based carrier medium for wet scrubbing paint overspray from the circulating air in painting booths, the carrier medium containing at least 40 wt. % of polyfunctional organic oxo compounds. The carrier medium is characterized in that the viscosity thereof is within a specified range over a wide range of shear stresses, such that the carrier medium flows off of the separating surfaces of a wet scrubbing facility in a temporally homogeneous and approximately laminar manner. In a further aspect, the invention relates to a method for wet scrubbing using the aforementioned carrier medium.

The invention relates to the use of a water-based carrier medium for wet scrubbing paint overspray from the circulating air in painting booths, the carrier medium containing at least 40 wt. % of polyfunctional organic oxo compounds. The carrier medium is characterized in that the viscosity thereof is within a specified range over a wide range of shear stresses, such that the carrier medium flows off of the separating surfaces of a wet scrubbing facility in a temporally homogeneous and approximately laminar manner. In a further aspect, the invention relates to a method for wet scrubbing using the aforementioned carrier medium.

The present invention relates to an aqueous separation liquid comprising at least 49.9 wt. % water, 5 to 50 wt. % of at least one organic water-soluble polyol, based on the total weight of the aqueous separation liquid, and at least one low molecular weight cellulose derivative as rheology modifier, and to the use of this liquid in a process for removing paint overspray from a paint spray booth.