Ventilator with rotating cylinder

Abstract

A ventilation device for a building is provided. The ventilation device includes a pair of frame elements spaced a distance from each other to define a free passage extending between an inside of the building and an outside of the building in a clearance defined by the distance. A rotating cylinder is positioned within the clearance and is configured to rotate between a closed position in which the rotating cylinder substantially completely seals the free passage and an opened position in which the rotating cylinder substantially completely opens the free passage. At least two seals are configured to substantially completely seal the rotating cylinder at least at each frame element of the pair of frame elements in the closed position.

1 . A ventilation device for a building, the ventilation device comprising:
 a pair of frame elements spaced a distance from each other to define a free passage extending between an inside of the building and an outside of the building in a clearance defined by the distance;   a rotating cylinder positioned within the clearance and configured to selectively rotate between a closed position in which the rotating cylinder substantially completely seals the free passage and an opened position in which the rotating cylinder substantially completely opens the free passage; and   at least two seals configured to substantially completely seal the rotating cylinder at least at each frame element of the pair of frame elements in the closed position.   
     
     
         2 . The ventilation device according to  claim 1 , further comprising a drainage positioned between the at least two seals, the drainage preferably arranged at a front side of the rotating cylinder such that a rotation axis of the rotating cylinder is substantially perpendicular to a longitudinal axis of the free passage. 
     
     
         3 . The ventilation device according to  claim 1 , wherein a ratio between a cross-sectional area of the passage and an overall cross-sectional area of the ventilation device is greater than 0.5. 
     
     
         4 . The ventilation device according to  claim 1 , wherein the rotating cylinder comprises a pair of elongated elements each having a cross section that is substantially partially circular, the elongated elements connected to each other at axial ends thereof. 
     
     
         5 . The ventilation device according to  claim 1 , wherein the at least two seals are configured to seal the rotating cylinder along a cylindrical surface of the rotating cylinder and at two front sides of the rotating cylinder. 
     
     
         6 . The ventilation device according to  claim 1 , wherein each seal of the at least two seals is configured to seal a gap between a cylindrical surface of the rotating cylinder and an adjacent frame element. 
     
     
         7 . The ventilation device according to  claim 1 , wherein each seal of the at least two seals comprises at least one of a permanently elastic elastomer, silicone, EPDM, TPE, butyl rubber, and gum. 
     
     
         8 . The ventilation device according to  claim 1 , further comprising a motor on a front side of the rotating cylinder and coupled to a terminating element, wherein a drive shaft of the motor is configured to drive the rotating cylinder. 
     
     
         9 . The ventilation device according to  claim 8 , further comprising:
 a motor controller including a central processing unit (CPU) configured to control a plurality of motors of a plurality of ventilation devices; and   a stand-by circuit operatively coupled to a power supply and configured to supply the CPU with current only when driving commands are received.   
     
     
         10 . The ventilation device according to  claim 9 , further comprising a contact strip configured to send a signal to the motor controller upon application of pressure to stop the motor, wherein the contact strip is coupled within a gap defined between a cylindrical surface of the rotating cylinder and an adjacent frame element. 
     
     
         11 . The ventilation device according to  claim 3 , wherein the ratio is greater than 0.6. 
     
     
         12 . The ventilation device according to  claim 4 , further comprising circular disks that couple the elongated elements together. 
     
     
         13 . The ventilation device according to  claim 1 , wherein each frame elements of the pair of frame elements has an elongated shape and the frame elements are connected to each other at ends of each frame element. 
     
     
         14 . The ventilation device according to  claim 13 , further comprising circular terminating elements that couple the frame elements together. 
     
     
         15 . The ventilation device according to  claim 1 , wherein each seal of the at least two seals is configured to seal a gap between a circular terminating element and a circular disk, wherein the seal comprises a pair of circular-arc portions for sealing the circular disk. 
     
     
         16 . The ventilation device according to  claim 6 , wherein each seal of the at least two seals is formed integrally and includes a pair of elongated portions for sealing the cylindrical surface of the rotating cylinder. 
     
     
         17 . The ventilation device according to  claim 7 , wherein each seal of the at least two seals is formed by an extrusion process. 
     
     
         18 . The ventilation device according to  claim 8 , further comprising a disk coupled to the rotating cylinder, the motor coupled to the disk to drive the rotating cylinder. 
     
     
         19 . The ventilation device according to  claim 1 , wherein the rotating cylinder is selectively positionable in arbitrary intermediate positions between the closed position and the opened position to partially block the free passage.