Radial- oder diagonalventilator

Abstract

The invention relates to a radial fan with an impeller ( 100 ) and a cylindrical drive unit ( 200 ) that can be rotated around the longitudinal axis, whereby the impeller ( 100 ) consists of a baseplate and of blades ( 101 ) arranged on the baseplate, and whereby the blades are located on the side facing the main air flow, and it is characterized in that the impeller ( 100 ) can be operatively connected to the drive unit ( 200 ) in two fastening planes. The impeller consists of a baseplate and blades arranged on the baseplate, whereby the blades are located on the side of the baseplate facing the main air flow, and whereby the baseplate is made up of an upper shell located on the side facing the main air flow and of a lower shell located on the side facing away from the main air flow, whereby the upper shell and the lower shell form a closed cavity with the cylindrical drive unit when in the installed state, whereby a first fastening plane is located on the upper shell and a second fastening plane is located on the lower shell.

1 . A radial or diagonal fan with an impeller and a prismatic drive unit that can be rotated around the longitudinal axis, characterized in that the impeller can be operatively connected to the drive unit in two fastening planes, whereby the impeller has a baseplate and blades arranged on the baseplate, and whereby the blades are located on the side of the baseplate facing the main air flow, whereby the baseplate is made up of an upper shell located on the side facing the main air flow and of a lower shell located on the side facing away from the main air flow, whereby the upper shell and the lower shell form a closed cavity with the cylindrical drive unit when in the installed state, whereby a first fastening plane is located on the upper shell and a second fastening plane is located on the lower shell. 
     
     
         2 . The radial or diagonal fan according to  claim 1 , characterized in that on the edge of the upper shell and of the lower shell facing the drive unit ( 200 ), there are fastening means in the appertaining fastening plane, and the drive unit has two flanges that are offset in the longitudinal axis, whereby the flanges have fastening means that can be detachably connected to the fastening means of the impeller. 
     
     
         3 . The radial or diagonal fan according to  claim 2 , characterized in that the upper shell and the lower shell are connected by screwed connections to flanges that are arranged on the cylindrical drive unit so as to be offset in the longitudinal axis. 
     
     
         4 . The radial or diagonal fan according to  claim 3 , characterized in that the fastening means in the upper shell, relative to the longitudinal axis of the rotatable cylindrical drive unit, are arranged radially offset to the fastening means of the lower shell. 
     
     
         5 . The radial or diagonal fan according to  claim 4 , characterized in that there are installation holes in the upper shell and/or in the lower shell opposite from the fastening means, which are concealed when in the installed state. 
     
     
         6 . The radial or diagonal fan according to  claim 5 , characterized in that the installation holes have a larger diameter than the holes in the lower shell and in the upper shell. 
     
     
         7 . The radial or diagonal fan according to  claim 5 , characterized in that the fastening means in the upper shell and the fastening means in the lower shell have holes or threaded bolts that are operatively connected to holes or threaded bolts of the flanges when in the installed state. 
     
     
         8 . The radial or diagonal fan according to  claim 1 ,
 characterized in that the upper shell and/or the lower shell have centering means that cooperate with centering means on the flanges that have been put in place.   
     
     
         9 . The radial or diagonal fan according to  claim 8 , characterized in that the centering means are centering projections and centering indentations that cooperate during the installation of the impeller on the cylindrical drive unit. 
     
     
         10 . The radial or diagonal fan according to  claim 1 , characterized in that the upper shell is configured to be rotation-symmetrically curved in such a way that it curves in the direction of the main air flow. 
     
     
         11 . The radial or diagonal fan according to  claim 1 , characterized in that the upper shell has several sections that have at least one concave section or one convex section or one flat section. 
     
     
         12 . The radial or diagonal fan according to  claim 1 , characterized in that the lower shell is configured to be flat. 
     
     
         13 . The radial or diagonal fan according to  claim 1 , characterized in that the cavity has at least one reinforcement that runs as a round or polygonal ring axially around the cylindrical drive unit or extends radially relative to the longitudinal axis of the rotatable cylindrical drive unit. 
     
     
         14 . The radial or diagonal fan according to  claim 1 , characterized in that the blades arranged on the baseplate are configured with a shell design. 
     
     
         15 . The radial or diagonal fan according to  claim 1 , characterized in that the contours of the blades arranged on the baseplate are configured to be smooth on the side facing the main air flow. 
     
     
         16 . The radial or diagonal fan according to  claim 2 , characterized in that the flanges of the drive unit extend to differing extents radially relative to the longitudinal axis. 
     
     
         17 . The radial or diagonal fan according to  claim 2 , characterized in that installation holes are arranged in the flanges opposite from the fastening means, which are concealed when in the installed state. 
     
     
         18 . The radial or diagonal fan according to  claim 17 , characterized in that the installation holes have a larger diameter than the holes in the lower flange and in the upper flange. 
     
     
         19 . The radial or diagonal fan according to  claim 1 , characterized in that the drive unit is a rotor or a shaft connection. 
     
     
         20 . The radial or diagonal fan according to  claim 1 , characterized in that the impeller has a baseplate as a closure.