Ventilation device for generating uniform fluid flows, and a drive unit for a device of said type

Abstract

A device according to the present disclosure ( 60 ) for generating a directed fluid flow comprises a support structure ( 1 ); a rotary structure ( 5 ) disposed in relation to the support structure so as to be rotatable around a first axis of rotation ( 10 ); and at least one active element ( 61, 61 ′) disposed on the rotary structure ( 5 ) so as to be rotatable around a second axis of rotation ( 9,9 ′), and which has an active surface ( 67 ). The at least one active element is rotatably connected to the rotary structure and the support structure such that, when the rotary structure rotates in relation to the support structure by one revolution around the first axis of rotation in a first direction of rotation, the at least one active element rotates in relation to the rotary structure by half of one revolution around the second axis of rotation in the opposite direction of rotation.

1 . A device for generating a directed fluid flow, particularly a directed air flow, by moving an active element with an active surface in a fluid, having a support structure; a rotary structure, which is rotatably supported around a first axis of rotation relative to the support structure; and at least one active element with an active surface, which is mounted on the rotary structure and rotatably supported around a second axis of rotation; wherein the at least one active element is operatively connected to the rotary structure and the support structure in such a manner that, when the rotary structure rotates in relation to the support structure around the first axis of rotation by a first frequency of rotation f1, the at least one active element rotates in relation to the rotary structure around the second axis of rotation by a second speed of rotation f2, wherein the ratio between the first and the second frequency of rotation is more than 1, preferably ≧1.5, and especially preferred ≧1.7. 
     
     
         2 . The device according to  claim 1 , wherein the ratio between the first and the second frequency of rotation is less than 3, preferably ≦2.5, and especially preferred ≦2.25. 
     
     
         3 . The device according to  claim 1 , wherein the first axis of rotation of the rotary structure and the second axis of rotation of the active elements are parallel. 
     
     
         4 . The device according to  claim 1 , wherein the angle between the first axis of rotation of the rotary structure and the second axis of rotation of the active elements is less than 90°, preferably less than 45°, especially preferred less than 30°. 
     
     
         5 . The device according to  claim 1 , characterized wherein the active elements are essentially configured as flat paddles. 
     
     
         6 . The device according to  claim 1 , wherein the at least one active element includes a drive gear, which is connected in a torque-resistant or rotatable manner to the same, that is rotatably connected to the support structure. 
     
     
         7 . The device according to  claims 6 , wherein the drive gears of the active elements are rotatably connected to the center gear by means of V-belts and/or intermediate gears, wherein the said center gear is fixedly disposed or reversibly locked in relation to the support structure. 
     
     
         8 . The device according to  claims 6 , wherein the drive gears of the active elements are rotatably connected to a ring gear, wherein the said ring gear is fixedly disposed or reversibly locked in relation to the support structure. 
     
     
         9 . The device according to  claim 1 , wherein the actuation of the active elements is achieved by means of a drive motor that rotates the rotary structure in relation to the support structure. 
     
     
         10 . The device according to  claim 6 , wherein the actuation of an active element is achieved by means of a direct drive motor that rotates the active element of the drive gear in relation to the rotary structure. 
     
     
         11 . The device according to  claim 1 , wherein there exists at least one drive unit, wherein the rotary structure and the at least one active element are rotatably connected to a drive unit; and a center gear, which is coaxially disposed in relation to the first axis of rotation, is rotatably connected to the at least one active element, wherein the said center gear is able to rotate with regard to the support structure and the rotary structure around the first axis of rotation. 
     
     
         12 . The device according to  claim 11 , wherein the center gear and the rotary structure are powered by a common drive unit. 
     
     
         13 . The device according to  claim 11 , wherein the center gear and the rotary structure are powered by two different drive units. 
     
     
         14 . The device according to  claim 11 , wherein the center gear and the rotary structure have different rotational speeds with the same rotational speed of the drive unit. 
     
     
         15 . The device according to  claim 11 , wherein two or more coupling units are provided by means of which it is possible to rotatably connect the at least one drive unit to the center gear and the rotary structure, wherein the two or more coupling units can be alternately activated. 
     
     
         16 . The device according to  claim 15 , wherein the two or more coupling units generate different speed ratios between the center gear and the rotary structure and/or between the center gear and the drive unit and/or between the rotary structure and the drive unit. 
     
     
         17 . The device according to  claim 15 , wherein two coupling units are provided, and it is possible to switch back and forth between the same by changing the direction of rotation of the drive unit. 
     
     
         18 . The device according to  claim 17 , wherein the coupling units are configured such that the directions of rotation of the center gear and the rotary structure are independent of the direction of rotation of the drive unit. 
     
     
         19 . The device according to  claim 11 , further comprising an auxiliary drive and an addition gear with a sun gear, a ring gear, as well as a planet carrier means that is rotatably disposed between the ring gear and the center gear; wherein planetary gears are rotatably disposed on the planet carrier means, which rotatably connect the ring gear, the planet carrier means and the sun gear; and wherein a drive unit, the auxiliary drive and the center gear are rotatably connected, respectively, to one unit each of the three units ring gear, planet carrier means and center gear. 
     
     
         20 . The device according to  claim 19 , wherein the drive unit is rotatably connected to the sun gear, the auxiliary drive is rotatably connected to the ring gear, and the center gear is rotatably connected to the planetary gear device. 
     
     
         21 . The device according to  claim 1 , wherein the rotary structure includes at least on active element holding means in which the at least one active element can be reversibly fastened. 
     
     
         22 . The device according to  claim 1 , further comprising solar cells that are disposed on the active elements. 
     
     
         23 . The device according to  claim 1 , further comprising light sources that are disposed on the active elements. 
     
     
         24 . A drive apparatus for generating superimposed rotational movements of active elements, having at least one drive unit; one support structure; one rotary structure, which is rotatably connected to the drive unit, and rotatably supported in relation to the support structure around a first axis of rotation; and one or a plurality of holding means for active elements, which are rotatably connected to the drive unit, and the same are rotatably supported on the rotary structure around a second axis of rotation, further comprising a center gear that is rotatably connected to the active element holding means, and which is coaxially disposed in relation to the first axis of rotation, wherein the said center gear is able to rotate in relation to the support structure and the rotary structure around the first axis of rotation. 
     
     
         25 . The drive apparatus according to  claim 24 , wherein the center gear and the rotary structure are powered by a common drive unit. 
     
     
         26 . The drive apparatus according to  claim 24 , wherein the center gear and the rotary structure are powered by two different drive units. 
     
     
         27 . The drive apparatus according to  claim 24 , wherein the center gear and the rotary structure have different speeds of rotation, while the speeds of rotation of the drive unit is the same. 
     
     
         28 . The drive apparatus according to  claim 24 , wherein two or more coupling units are provided by means of which the at least one drive unit can be rotatably connected to the center gear and the rotary structure, wherein the two or more coupling units can be alternately activated. 
     
     
         29 . The drive apparatus according to  claim 28 , wherein the two or more coupling units generate different speed ratios between the center gear and rotary structure and/or between the center gear and the drive unit and/or between the rotary structure and the drive unit. 
     
     
         30 . The drive apparatus according to  claim 28 , wherein two or more coupling units are provided, and wherein it is possible to switch back and forth between the same by changing the direction of rotation of the drive unit. 
     
     
         31 . The drive apparatus according to  claim 30 , wherein the coupling units are configured such that the directions of rotation of the center gear and of the rotary structure are independent of the direction of rotation of the drive unit. 
     
     
         32 . The drive apparatus according to  claim 24 , wherein an auxiliary drive and an addition gear having a sun gear, a ring gear as well as a planetary gear device is rotatably disposed between the ring gear and the sun gear; wherein planetary gears are rotatably disposed on the planetary gear device rotatably connecting the sun gear; and wherein a drive unit, the auxiliary drive and the center gear are rotatably connected respectively with one of the three units ring gear, planetary gear device and sun gear. 
     
     
         33 . The drive apparatus according to  claim 32 , wherein the drive unit is rotatably connected to the sun gear, the auxiliary drive is rotatably connected to the ring gear, and the center gear is rotatably connected to the planetary gear device.