Electromagnetic exposure chamber for improved heating

H - Electricity – 05 – B

Patent

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Details

H05B 6/78 (2006.01) H05B 6/70 (2006.01) H05B 6/74 (2006.01)

Patent

CA 2355152

The present invention utilizes dielectric slabs to provide a relatively uniform electromagnetic field to a cavity between two or more dielectric slabs. Each dielectric slab is a thickness equal to or nearly equal to a quarter of a wavelength of the electromagnetic field in the dielectric slab. In a particular embodiment, sample material is introduced into the cavity between the two dielectric slabs. This sample material may be introduced through one or more openings in the dielectric slabs. In further embodiments, specialized choke flanges prevent the leakage of energy from this cavity. In a preferred embodiment, an elliptical conducting surface directs the electromagnetic field to a focal region between the two dielectric slabs. Openings to this focal region allow sample material to be passed through this region of focused heating.

L'invention utilise des plaques diélectriques pour fournir un champ électromagnétique relativement uniforme dans une cavité ménagée entre deux ou plusieurs plaques diélectriques. L'épaisseur de chaque plaque est égale ou quasiment égale à un quart d'une longueur d'onde du champ électromagnétique de la plaque diélectrique. Selon un mode de réalisation particulier, une matière échantillon est introduite dans la cavité ménagée entre les deux plaques, à travers une ou plusieurs ouvertures ménagées dans les plaques. Selon d'autres modes de réalisation, des flasques d'arrêt spécialisés empêchent la fuite d'énergie. Selon un mode de réalisation préféré, une surface conductrice elliptique dirige le champ électromagnétique sur une zone focale entre les deux plaques. La matière échantillon traverse les ouvertures pour passer à travers la zone de chaleur concernée.

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