Impeller assembly

Abstract

An impeller assembly is revealed. The impeller assembly includes a base arranged with at least one impeller. The base has a flow guide surface disposed with at least one mount location set thereof. The mount location set is composed of a plurality of locking slots and a mounting region while each locking slot connects the mounting region with the flow guide surface. The impeller includes a mounting part mounted into the mounting region of the base and a plurality of blades is arranged around the mounting part. A reinforcing piece is disposed between the inner edge of the blade and the mounting part for connection, and is mounted into the locking slot correspondingly. By such design, the structural strength of the weak region between the mounting part and the blade is increased and this favors precise location and assembly of the impeller with the base.

1 . An impeller assembly comprising:
 a base having a flow guide surface and being disposed with at least one mount location set; wherein the mount location set includes a plurality of locking slots and a mounting region while each locking slot connects the mounting region with the flow guide surface; and   at least one impeller having a mounting part in a center thereof to be mounted in the mounting region of the base correspondingly and a plurality of blades arranged around a periphery of the mounting part and corresponding to each locking slot of the base; wherein the blade includes a front edge that is an air inlet end and a rear edge while a region between an inner edge of the blade and the periphery of the mounting part is arranged with a reinforcing piece; the reinforcing piece connects the mounting part and the inner edge of the blade and being mounted in the locking slot of the base correspondingly; a region among the two adjacent blades and the flow guide surface of the base forms an air channel.   
   
   
       2 . The device as claimed in  claim 1 , wherein an area of the flow guide surface is corresponding to a region that covers the inner edge and the rear edge of the blade so as to make air out of the impeller assembly become a side flow. 
   
   
       3 . The device as claimed in  claim 1 , wherein the base includes an upper and a lower mount location sets, respectively locked and fixed with corresponding upper and lower impellers; the impellers respectively include at least one blade while the blade of the lower impeller is located on a rear end of an air channel formed among the two adjacent blades of the upper impeller and the flow guide surface of the base. 
   
   
       4 . The device as claimed in  claim 1 , wherein the mounting part of the impeller includes a top surface in which a shaft is disposed on a center of a bottom side thereof for connection with a mechanism that transmits the rotation of the impeller assembly. 
   
   
       5 . The device as claimed in  claim 1 , wherein the base includes a housing and a shaft is arranged at a center of an inner surface of the housing for connection with a mechanism that transmits the rotation of the impeller assembly. 
   
   
       6 . The device as claimed in  claim 5 , wherein the housing is located on a center of the mounting region and the mount location set is set outside the housing. 
   
   
       7 . The device as claimed in  claim 6 , wherein the base is further disposed with at least one lower blade and the rear edge of the blade of the impeller together with a front edge of the lower blade of the base form a blade whose surface has a continuous curvature. 
   
   
       8 . The device as claimed in  claim 6 , wherein the base is further disposed with at least one lower blade and the lower blade of the base is located on a rear end of an air channel formed among the two adjacent blades of the impeller and the flow guide surface. 
   
   
       9 . The device as claimed in  claim 5 , wherein the mount location set of the base is located over the housing. 
   
   
       10 . The device as claimed in  claim 9 , wherein the base is further disposed with at least one lower blade and the rear edge of the blade of the impeller together with a front edge of the lower blade of the base form a blade whose surface has a continuous curvature. 
   
   
       11 . The device as claimed in  claim 9 , wherein the base is further disposed with at least one lower blade and the lower blade of the base is located on a rear end of an air channel formed among the two adjacent blades of the impeller and the flow guide surface. 
   
   
       12 . The device as claimed in  claim 1 , wherein an outer end of the blade of the impeller is connected with an air outlet end of a space of a frame so that the impeller is non-rotating and another impeller that includes a housing and a periphery disposed with a plurality of blades is arranged over the non-rotating impeller; an angle of attack of the blade of the impeller above and that of the blade of the non-rotating impeller are disposed opposite to each other; a mechanism for transmitting rotation of the impeller assembly is mounted in the housing of the impeller above.