HOTHOUSE CROP AND SEEDLING GROWING GREENHOUSE Russian patent published in 1996 - IPC

FIELD: agriculture. SUBSTANCE: greenhouse floor with crop layer is separated from ground surface and is mounted at its ends on two wide and high columns covered with heat-insulating material. Shell is positioned between columns for rotation about its longitudinal axis so that it embraces floor. Shell is covered from bottom with arched warmed profile shaped as semishell. Shell is divided across chord section into glass-enclosed summer section and warmed winter section. When shell is rotated, one section is replaced by the other section. When greenhouse operates in winter mode, warmed section is over floor. In this case sealing is provided by flexible cord such as rubber pipe filled with compressed air and inserted between shell, columns and semishells. Efficient usage of inner volume of shell is provided by mounting shelves with crops through brackets on floor edges. Floor may be made multitier. When greenhouse is mounted on ceiling of heated building, two warmed shields are positioned in greenhouse instead of semishell so that pocket open from bottom is defined. It allows heat to be utilized. Washing is facilitated through step-by-step rotation of shell so that windows are brought to washing zone. EFFECT: increased efficiency, reduced power consumption and enhanced reliability in operation. 6 cl, 9 dwg