| 摘要 |
FIELD: agricultural engineering. SUBSTANCE: automatic temperature control unit has a power member and a movable member. The former makes the latter move along a guiding bar. The movable member is in kinematic linkage with a ventilation door of the greenhouse at such a distance that any force applied on the ventilation door side does not result in movement of the movable member along the guiding bar, and the ventilation door does not make a turn. The ventilation door can be turned only by the effort of the power member, and the control unit automatically counterworks in the case of any external force applied on the ventilation door. The power member may be a solid body. EFFECT: higher reliability; lower cost; smaller dimensions. 5 dwg |
