| 摘要 |
PCT No. PCT/SE88/00198 Sec. 371 Date Nov. 16, 1989 Sec. 102(e) Date Nov. 16, 1989 PCT Filed Apr. 18, 1988 PCT Pub. No. WO88/08336 PCT Pub. Date Nov. 3, 1988.A powder sprayer for the powder coating of an object is provided with an annular charging channel (9) for electrostatic charging of the powder. The channel is defined by an inner, longitudinal rod (8) and an outer tube, (7), both being manufactured of electrically insulating material. The rod (8) is centered in the tube (7) by means of spacer and turbulence members (10) with vanes which are obliquely inclined or helically configurated in relation to the longitudinal direction of the sprayer. In order to improve the charging and blending of the powder, the turbulators (10) are arranged pair-wise after one another, each with a plurality of vanes which are distributed about the rod (8) so that through flow channels are formed between the vanes. The vanes in adjacent turbulators (10) are, in this instance, offset in the circumferential direction in relation to one another, so that the leading edges of the vanes in a downstream turbulator (10) lie in register with the through flow channels in an upstream turbulator (10).
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