Blower and fan frame

Abstract

The blower includes a fan blade 5 extending in a centrifugal direction from an outer peripheral surface of a hub part having a cylindrically-shaped outer peripheral surface, a driving part for supporting and driving the fan blade 5 , and a fan frame 2 a which supports the driving part and has an intake port 4 , and is characterized in that the fan frame 2 a includes legs 9 a to 9 c for connecting a drive side inner peripheral end of the intake port 4 to an outer peripheral end, and a side of the outer peripheral end of the fan frame 2 a is provided with slits 10 for extending the legs 9 a to 9 c.

1 . A blower including:
 a fan blade extending in a centrifugal direction from an outer peripheral surface of a hub part having a cylindrically-shaped outer peripheral surface;   a driving part for supporting and driving the fan blade; and   a fan frame which supports the driving part and has an intake port, characterized in that the fan frame includes a leg for connecting a drive side inner peripheral end of the intake port to an outer peripheral end opposed to the inner peripheral end, and a side of the outer peripheral end of the fan frame is provided with a slit for extending the leg.   
     
     
         2 . The blower as claimed in  claim 1 , wherein the fan frame is provided with a connection for connecting the fan frame to a fan cover for pinching and supporting the fan blade together with the fan frame, and the connection is placed in a position other than an extension of the leg. 
     
     
         3 . The blower as claimed in  claim 1 , wherein the slit is parallel to a longitudinal direction of the leg. 
     
     
         4 . The blower as claimed in  claim 1 , wherein the leg near to an exhaust port among the plural legs is formed thicker than the other legs. 
     
     
         5 . The blower as claimed in  claim 4 , wherein a length of the slit with which the leg near to the exhaust port is provided differs from that of the slit with which the other leg is provided. 
     
     
         6 . The blower as claimed in  claim 1 , wherein an end of the slit has substantially a circular arc shape. 
     
     
         7 . The blower as claimed in  claim 1 , wherein in thicknesses of both ends of the leg, the thickness of a side of the driving part is thinner than the thickness of a side of the slit. 
     
     
         8 . The blower as claimed in  claim 6 , wherein thicknesses of both ends of the leg change obliquely so as to become thin from a side of the slit toward a side of the driving part. 
     
     
         9 . The blower as claimed in  claim 7 , wherein thicknesses of both ends of the leg change stepwise so as to become thin from a side of the slit toward a side of the driving part. 
     
     
         10 . The blower as claimed in  claim 7 , wherein thicknesses of both ends of the leg change in a portion notched in the leg so as to become thin from a side of the slit toward a side of the driving part. 
     
     
         11 . The blower as claimed in  claim 1 , wherein the leg and the slit extend in a tangential direction of the drive side inner peripheral end of the intake port. 
     
     
         12 . A blower including:
 a fan blade extending in a centrifugal direction from an outer peripheral surface of a hub part having a cylindrically-shaped outer peripheral surface;   a driving part for supporting and driving the fan blade, and   a fan case which supports the driving part and has an intake port and an exhaust port, characterized in that the fan case includes plural legs for connecting a drive side inner peripheral end of the intake port to an outer peripheral end opposed to the inner peripheral end, and a side of the outer peripheral end of the fan frame is provided with a slit for extending the leg.   
     
     
         13 . The blower as claimed in  claim 12 , wherein the fan case includes a fixing part for fixing the blower to a cabinet for installing the blower, and the fixing part is positioned as an extension of the leg. 
     
     
         14 . The blower as claimed in  claim 12 , wherein the fan case includes a fixing part for fixing the blower to a cabinet for installing the blower, and the number of legs is smaller than the number of fixing parts. 
     
     
         15 . The blower as claimed in  claim 1 , wherein the plural slits are provided and all the plural slits have substantially the same length. 
     
     
         16 . The blower as claimed in  claim 1 , wherein the plural slits are provided and all the plural slits have substantially the same width. 
     
     
         17 . A fan frame for housing a fan blade, including an intake port for sucking air by the fan blade, wherein the fan frame includes a leg for connecting an inner peripheral end of the intake port to an outer peripheral end opposed to the inner peripheral end, and a side of the outer peripheral end of the fan frame is provided with a slit for extending the leg. 
     
     
         18 . A blower including:
 a fan blade extending in a centrifugal direction from an outer peripheral surface of a hub part having a cylindrically-shaped outer peripheral surface, and   a fan frame which receives the fan blade and has an intake port, wherein the fan frame includes a leg for connecting a drive side inner peripheral end of the intake port to an outer peripheral end opposed to the inner peripheral end, and a side of the outer peripheral end of the fan frame is provided with a slit for extending the leg.