Irradiation device

Details Irradiation device Irradiation device

1991-03-29

1992-08-04

Berman, Jack I.

Radiant energy

Irradiation of objects or material

250504R, 315248, H05B 4116

Patent

active

051361701

ABSTRACT:
The irradiation device for drying and/or curing paints, varnishes and similar coatings (13, 14) has at least one UV high-power radiator having a discharge space (3) filled with filling gas. The filling gas contained therein emits radiation under the effect of silent electrical discharges. The discharge space (3) is bounded by walls (1, 2), at least one wall consisting of dielectric material and being transmissive to the radiation generated in the discharge space (3). A pair of electrodes (4, 5), with an AC source (10) connected to the two electrodes, serves for feeding the discharge. The treatment space (6) is immediately adjacent to the dielectric (1, 2). The electrodes (4, 5) are positioned at a distance from the immediately neighboring dielectric. The coupling of the electrical energy from the electrodes into the discharge space takes place essentially capacitively. In this way, as well as the discharges in the actual discharge space (3), which are responsible for the generation of UV or VUV radiation, there also occur in the treatment spaces (6, 7) electrical discharges which, along with the radiation produced in the discharge space (3), additionally act catalytically on said coatings and substantially accelerate the drying/curing of the coating (13, 14).

REFERENCES:
patent: 4266162 (1981-05-01), McNeill et al.
patent: 4266167 (1981-05-01), Proud et al.
patent: 4647821 (1987-03-01), Lapatovich et al.
patent: 4675577 (1987-06-01), Hanlet
patent: 5013959 (1991-05-01), Kogelschatz
Applied Physics B 46, (1988), B. Eliasson et al., "UV Excimer Radiation from Dielectric-Barrier Discharges", pp. 299-303.

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