US 12,382,882 B2
Greenhouse
Willem Nowé, 's-Gravenzande (NL); and Vincent Martijn Kickert, Den Hoorn (NL)
Assigned to Van der Hoeven Horticultural Projects B.V., Den Hoorn (NL)
Filed by VAN DER HOEVEN HORTICULTURAL PROJECTS B.V., Den Hoorn (NL)
Filed on Feb. 8, 2023, as Appl. No. 18/107,061.
Application 18/107,061 is a division of application No. 16/955,918, granted, now 11,596,111, previously published as PCT/NL2018/050876, filed on Dec. 21, 2018.
Claims priority of application No. 2020176 (NL), filed on Dec. 22, 2017.
Prior Publication US 2023/0180676 A1, Jun. 15, 2023
Int. Cl. A01G 9/14 (2006.01); A01G 9/24 (2006.01); E04B 7/16 (2006.01); E04D 13/17 (2006.01)
CPC A01G 9/1407 (2013.01) [A01G 9/241 (2013.01); A01G 9/246 (2013.01); E04B 7/163 (2013.01); E04D 13/174 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A process for conditioning the air within a greenhouse comprising transparent walls and a structure including one or more ridge beams as part of a roof of the greenhouse, the process comprising:
maintaining a pressure difference between an average pressure within the greenhouse and a pressure exterior to the greenhouse;
taking in air from the exterior of the greenhouse and mixing this air with air taken from the interior of the greenhouse to obtain conditioned air;
distributing the conditioned air via a forced flow to the interior of the greenhouse; and
discharging a volume of air from the interior of the greenhouse via openings present in the one or more ridge beams such to maintain the pressure difference,
wherein the discharge of air via the openings in the one or more ridge beams is performed via openings that direct the air in a sideways direction relative to the one or more ridge beams, and
wherein a rotatable valve rotating over an axis parallel to the one or more ridge beams is used to either direct the majority of the air to one side or to the other side.