HOTHOUSE Russian patent published in 1994 - IPC

FIELD: agriculture. SUBSTANCE: hothouse has a set of frames, which have cross-bars, and containers for growing plants, mounted onto cross-bars. Two screens are mounted above the frames. Any screen is combined and has shutters; any shutter is mounted for rotation. Shutters of the screen which is disposed closer to the frames, are made of transparent material. Shutters of the other screen are covered with light-reflecting material. Light sources are disposed between the screens; the sources are fixed to posts. Additional shutter screens which are covered with light-reflecting material, are fixed around light sources onto the frames. Each shutter of additional screen is fixed for rotation about axis which is parallel to planes of cross-bars disposition in such a manner, that axes of their possible rotation pass through cylindrical surface, which has axis passing through light sources. EFFECT: improved quality of goods; improved productivity. 2 cl, 2 dwg