Electrostatic spray apparatus including a spray hood having an electrode

摘要

PCT No. PCT/GB90/00877 Sec. 371 Date Jan. 31, 1992 Sec. 102(e) Date Jan. 31, 1992 PCT Filed Jun. 6, 1990 PCT Pub. No. WO90/14894 PCT Pub. Date Dec. 13, 1990.An electrostatic spray apparatus, including a spray hood having an electrode. The hood defines a top region with a depending skirt and comprises first and second hood elements, either or both of which may comprise molded shells, with an electrode sandwiched therebetween. The electrode extends over the top region and down the skirt and terminates short of the lower regions of the skirt. The hood is constructed such that, other than at the lowermost regions of the skirt, the hood does not have any junction of its planar surfaces having a radius less than one hundred and fifty millimeters. The hood has an opening in its top region, through which an electrostatic spray head is placed into the hood. The electrode presents a connection for an electrical supply, and the potential applied to the spray head is substantially the same as that applied to the electrode.