Axial blower

Abstract

An axial blower includes a moving vane generating air flow by rotation, a casing accommodating said moving vane, and an adapter detachably attached to the casing. The adapter includes a fitting part to be fit to an inner surface of the casing. The adapter forms a protrusion or a step on the inner surface of the casing.

1 . An axial blower comprising:
 a moving vane generating air flow by rotation;   a casing accommodating said moving vane; and   an adapter detachably attached to said casing, the adapter including a fitting part to be fit to an inner surface of said casing, the adapter forming a protrusion or a step on the inner surface of said casing.   
     
     
         2 . The axial blower as claimed in  claim 1 , further comprising a stopper part formed on one end side of said fitting part and extending in a direction perpendicular to an axial direction of said casing. 
     
     
         3 . The axial blower as claimed in  claim 1 , wherein said fitting part of said adapter includes a plurality of strip parts extending in an axial direction of said casing. 
     
     
         4 . The axial blower as claimed in  claim 1 , wherein said fitting part of said adapter includes a plurality of strip parts extending in a direction slanted with respect to an axial direction of said casing by a predetermined angle. 
     
     
         5 . The axial blower as claimed in  claim 2 , wherein said stopper part is in contact with an end of said casing from which air flows out of said casing. 
     
     
         6 . The axial blower as claimed in  claim 2 , wherein said stopper part is in contact with an end of said casing through which air flows into said casing. 
     
     
         7 . The axial blower as claimed in  claim 1 , wherein a tip of said fitting part has a slanting surface or a curved surface. 
     
     
         8 . The axial blower as claimed in  claim 1 , wherein said adapter includes a finger guard.