Patent ID: 8881424

Claim:
A dryer installation ( 1 ) for drying a product ( 3 ), said dryer installation comprising: a device ( 2 ) for moving the product ( 3 ); at least one heating unit ( 4 ), said heating unit comprising at least one infrared emitter ( 5 ) and an overpressure system ( 6 ); said heating unit ( 4 ) adapted for heating by radiating said moving product ( 3 ), thereby obtaining evaporation products ( 7 ); said at least one heating unit ( 4 ) being delimited by protection ( 8 ); said protection ( 8 ) being transparent to infrared radiation and providing a physical barrier against said evaporation products ( 7 ); said overpressure system ( 6 ) being adapted for blowing air ( 9 ) into said heating unit ( 4 ) for creating an overpressure in the heating unit ( 4 ); said infrared emitters ( 5 ) adapted for producing combustion products ( 10 ) at high temperature; said air ( 9 ) and said combustion products ( 10 ) getting mixed in the heating unit thereby obtaining a mixture ( 11 ); said protection ( 8 ) being adapted for allowing a first flow ( 12 ) of said mixture ( 11 ) to exit the heating unit ( 4 ) through said protection ( 8 ) onto the product ( 3 ) to be dried; said overpressure system ( 6 ) being adapted for removing a second flow ( 13 ) of said mixture ( 11 ) out of the heating unit ( 4 ); said dryer installation further comprising: an extraction means ( 14 ) being adapted for extracting extracted products ( 15 ), said extracted products ( 15 ) comprising at least part of said evaporation products ( 7 ) and said first flow ( 12 ) of said mixture ( 11 ).