Electrostatic spray device for spraying a liquid coating product, and spray facility comprising such a spray device
US9901941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2014 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Aug 8, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B5/043
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrostatic spray device for spraying a liquid coating product, including a rotating bowl and a device for driving the bowl around a rotational axis, the bowl defining a concave surface for distributing the coating product and an edge which limits an area for the spraying the coating product. The spray device includes an electrode that charges by ionization of drops of the coating product. The electrode is arranged, in relation to the edge and along the rotational axis, opposite the spray area, between the edge and the device for driving the bowl. A second electrode mounted on a stationary body allows the creation of an electrostatic field for transporting drops. A third electrode, which is also mounted on a stationary body, is brought to an intermediate potential between those of the first and second electrodes during the operation of the spray device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.