Device for adjusting an air volume flow

Abstract

A device for adjusting an air volume flow, in particular in an air distribution network, has a central air channel which can be flowed through and a throttle which is arranged in the central air channel. A size of a cross section of the air channel which can be flowed through can be changed by a throttle, wherein the throttle has an adjustment mechanism for changing the cross section which can be flowed through. The device has in addition to the throttle a central flow element which is arranged in the air channel and which has a cover, the circumference of which increases in the direction away from the throttle. The adjustment mechanism can be activated with the device being mounted in a wall opening. This enables an optimum fine adjustment of the device.

1 . A device for adjusting an air volume flow, in particular in an air distribution network,
 wherein the device has an air channel which can be flowed through and a throttle which is arranged in the air channel, wherein a size of a cross section of the air channel which can be flowed through can be changed by means of the throttle,   wherein the throttle has an adjustment means for changing the cross section which can be flowed through,   wherein the device has in addition to the throttle a flow element which is arranged in the air channel and which has a cover, the circumference of which increases in the direction away from the throttle, and   wherein the adjustment means can be activated with the device being mounted in a wall opening.   
     
     
         2 . The device according to  claim 1 , wherein the adjustment means can be activated manually. 
     
     
         3 . The device according to  claim 1 , wherein the flow element has a through-opening which enables access to the adjustment means. 
     
     
         4 . The device according to  claim 3 , wherein the through-opening is arranged in a decentralized manner in the cover of the flow element. 
     
     
         5 . The device according to  claim 1 , wherein the throttle has at least a first throttle portion ( 60 ) having first blocking elements and a second throttle portion having second blocking elements,
 wherein the position of the second blocking elements can be changed relative to the first blocking elements in order to change the size of the cross section which can be flowed through.   
     
     
         6 . The device according to  claim 5 , wherein the cover of the flow element in the flow direction is arranged with spacing from the first blocking elements and/or the second blocking elements. 
     
     
         7 . The device according to  claim 5 , wherein the second throttle portion is supported on its circumference. 
     
     
         8 . The device according to  claim 5 , wherein the second throttle portion is not guided and has no bearings in a central region. 
     
     
         9 . The device according to  claim 5 , wherein the second throttle portion is configured in a rotatable manner, and wherein the adjustment means is arranged in a decentralized manner. 
     
     
         10 . The device according to  claim 1 , wherein the adjustment means has a tooth arrangement and a gear which is in engagement with the tooth arrangement, and wherein the tooth arrangement is arranged on the second throttle portion and the gear forms a head of a rotary pin. 
     
     
         11 . The device according to  claim 10 , wherein the rotary pin has a pin which can be contacted through the through-opening of the flow element in order by rotating the pin to rotate the gear along the tooth arrangement. 
     
     
         12 . The device according to  claim 1 , wherein the cover runs spaced apart from an inner wall of a housing, and wherein the air channel runs in the gap between the cover and the inner wall of the housing. 
     
     
         13 . The device according to  claim 1 , wherein the flow element in the mounted state of the device is arranged indirectly or directly on the throttle so as to be releasable and able to be secured again. 
     
     
         14 . The device according to  claim 1 , wherein the flow element has a bell-like configuration having a cross section which expands in a direction away from the throttle and the cover which is curved inwards.