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Priority to GEAP2010011844priorityCriticalpatent/GEP20125468B/en
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A furnace contains a heat-insulated case 1 with a bed 3, ovens 4 with baking trays 9 placed therein, combustion chambers 5 with the gas torches 6 placed therein, air distributors 7, channels of collection of combustion products and outlet pipe. The furnace is in addition supplied with heat-collecting bimodal hood 2 mounted above the case. In each oven there are pairs of air distributors of W-shaped form between which there is a clearing. At the bottom of the air distributors and in the top part of the ovens the electro-heaters 8 are located, and in the bed the thermal chamber is arranged.