VENTILATION SYSTEM FOR A GLASSHOUSE.

摘要

The glasshouse structure is formed by main support pieces (2) and auxiliary vertical and horizontal supports (1) plus arched bars (3) that configure the roof. The arched bars (3), reinforced with some auxiliary vertical bars, join with the main vertical pieces (2) in a coupling node (4) formed by a flange that engages the ends of each bar. The ventilation device allows the opening of a half arch by means of a window hinged in the coupling node (4) and whose end (8) facing the air current is in the ridge of the enclosure. The hinged coupling is located on the end of the arched bar (3) of the structure and formed from two pieces in an L with the arms in opposition and external, joined by means of the same screws employed in the union of the arched bar (3). The pieces in an L and are separated by means of tubular pieces at a distance equivalent to the width of the window frame (5). The frame (5) connects at its end with the end of the assembly of pieces in an L, which are bent upwards to assure a certain distance between the piece (3) of the arch and the frame (5) of the window whilst rotation in the hinged area is not impeded. On the hinged connection there is a piece (7) for securing the end of the plastic sheet (6) that serves as covering for the window maintaining it in tension. A motor driven actuator is used to open the window.