US2012251321A1PendingUtilityA1

Impeller and centrifugal fan

16
Assignee: FUCHIBE MANABUPriority: Mar 31, 2011Filed: Mar 19, 2012Published: Oct 4, 2012
Est. expiryMar 31, 2031(~4.7 yrs left)· nominal 20-yr term from priority
Inventors:Manabu Fuchibe
F04D 25/0613F04D 29/282F05C 2225/00
16
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Claims

Abstract

Herein disclosed are an impeller and a centrifugal fan having the same. The impeller includes a cup-shaped metallic hub having a cylindrical portion. The hub includes a flange extending outwardly from an edge of the cup, a plurality of resin vanes disposed above an outer portion of the flange and coaxially with the cylindrical portion, and an annular part made of resin supporting the plurality of resin vanes thereon and holding the outer portion of the flange embedded therein.

Claims

exact text as granted — not AI-modified
1 . An impeller comprising:
 a cup-shaped metallic hub having a cylindrical portion, the hub comprising a flange extending outwardly from an edge of the cup;   a plurality of resin vanes disposed above an outer portion of the flange and coaxially with the cylindrical portion; and   an annular part made of resin supporting the plurality of resin vanes thereon and holding the outer portion of the flange embedded therein.   
     
     
         2 . The impeller according to  claim 1 , wherein the plurality of resin vanes and the annular part include an elastomer. 
     
     
         3 . The impeller according to  claim 1 , wherein at least a part of the outer portion of the flange embedded in the annular part has a form which is not perpendicular to the rotation axis of the cylindrical portion. 
     
     
         4 . The impeller according to  claim 1 , wherein at least a part of the outer portion of the flange embedded in the annular part is bent upwardly to form an acute angle with the rotation axis of the cylindrical portion. 
     
     
         5 . The impeller according to  claim 1 , wherein at least a part of the outer portion of the flange embedded in the annular part has a waved form. 
     
     
         6 . The impeller according to  claim 1 , wherein the plurality of resin vanes and the annular part include a glass fiber. 
     
     
         7 . A centrifugal fan comprising the impeller according to  claim 1  and a motor rotating the impeller.

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