The present invention relates to a fan device including at least one ring and inner blades and outer blades extend form an inner periphery and an outer periphery of the at least one ring.
A conventional fan device for removing heat from a hear source such as a CPU in a computer is disclosed in
The present invention intends to provide a fan device that includes at least one ring and a plurality of inner blades and outer plates extend from the inner periphery and the outer periphery of the at least one ring.
The present invention relates to a fan device that comprises a casing having a recess defined in a first side thereof so as to receive a fan unit therein, and a hole is defined through a second side of the casing. An outlet is defined in a side of the casing. The fan unit includes a first ring and a motor is located at a center of the first ring. A plurality of inner blades extend from an inner periphery of the first ring and a plurality of outer blades extend from an outer periphery and an underside of the first ring. The inner plates are connected to the motor.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
The fan unit 11 includes a first ring 18, a second ring 19, and a motor 151 located at a center of the first and second rings 18 and 19. A plurality of curve inner blades 15 extend from the two respective inner peripheries of the first ring 18 and the second ring 19. The inner blades 15 each have an extension portion 152 which is connected on a top of the motor 151. A plurality of curve outer blades 16 extend from an outer periphery and an underside of the first ring 18. The first ring 18 is in flush with a top side of the inner and outer blades 15, 16, A lower side of each outer blades 16 are connected to a top of the second ring 19. A number of the inner blades 15 is less than a number of the outer blades 16. In other words, each of the inner blades 15 is connected to one of the outer blades 16 and some of the outer blades 16 are not connected to the inner blades 15. The connection of the inner blades 15 and the outer blades 16 form smooth curve blades. A diameter of the first ring 18 is different from that of the second ring 19. In this embodiment, the diameter of the first ring 18 is smaller than the diameter of the second ring 19. A cover 12 is connected to a top of the casing 10 and includes a hole 170 whose diameter is larger than the diameter of the fan device 11 so that the fan device 11 sucks air via the hole 170. Air is sucked from the underside of the fan device 11 via the holes 17. The curve blades 15, 16 efficiently suck air from both sides of the fan device 11 and send the air out from the outlet 14.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Number | Name | Date | Kind |
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6873069 | Odagiri et al. | Mar 2005 | B1 |
6964556 | Chiu et al. | Nov 2005 | B2 |
20040258527 | Kaneko et al. | Dec 2004 | A1 |
Number | Date | Country | |
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20060073043 A1 | Apr 2006 | US |