MICROWAVE PROCESSING PLANT Russian patent published in 1996 - IPC

FIELD: heat treatment of materials. SUBSTANCE: plant has microwave oscillator with diaphragm and working chamber, power circuit, relay inserted in power circuit of microwave oscillator, section of waveguide below cutoff in respect to fundamental of microwave oscillator, coupling member of below-cutoff waveguide with working chamber, and microwave energy converter connected to below-cutoff waveguide. In emergency operating conditions, signal level at higher multiple harmonics, that is, at control unit input, abruptly rises, relay operates and de-energizes microwave oscillator power circuit. EFFECT: improved design. 1 dwg, 1 tbl