Fan device capable of increasing air pressure and air supply
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[0017]Referring to FIGS. 1, to 3, a fan device according to the present invention includes a fan frame 11 and a fan wheel 12. The fan frame 11 has an outlet side 111, an inlet side 112 and a flow path 113 communicating the inlet side 111 and the outlet side 112. Further, a base 13 is disposed in the flow path 113. The base 13 includes a main base part 131 and a shoulder part 132. It can be seen in FIG. 3, The shoulder part 132 has a streamline contour extending from a lateral side of the main base part 131 to the inlet side 111 of the fan frame 11 and provides a concave inward curved surface 133 converging toward the central axis 14 such that a tip end 134 is formed at the central axis 14.
[0018]Referring to FIG. 2 again, the base 13 is joined to the inner wall of the fan frame 11 with a plurality of elongated fan blade shaped connecting parts 15 such that the base 13 is held in the flow path 113.
[0019]Referring to FIG. 4, the fan wheel 12 is rotatably to the base main part 131 oppos...
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