Fan and fan housing thereof having flapper

Inactive Publication Date: 2008-06-19
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012]As mentioned above, the flapper of the invention is connected to the corner of the fan housing. Thus, the flapper is directly coupled to the fan housing, so that the fan housing does not occupy additional space, the additional elements for installing or fixing the flapper are unnecessary, and the structure and manufacturing of the fan housing are simplified. Compared with the prior art, the invention modifies the corner of the fan

Problems solved by technology

If one of the fans malfunctions while the computer system is operating, a backflow through the fan occurs since the interior of the computer system has negative pressure.
The backflow will affe

Method used

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  • Fan and fan housing thereof having flapper
  • Fan and fan housing thereof having flapper
  • Fan and fan housing thereof having flapper

Examples

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Example

[0028]With reference to FIGS. 5 and 7 showing the second embodiment of a fan 3 according to the present invention. The fan 3 includes a motor base 22, an impeller with a plurality of blades 41 (not shown), a motor (not shown) and a fan housing 21. The fan 3 can be an axial-flow fan or a centrifugal fan. The fan 3 is similar to fan 2 as above described except that each of the flappers 321 is pivotally connected to a corner of the fan housing 21 via the connecting element 322, and the shape of the flappers 321 corresponds to the shape of the opening 2111 without covering the motor base 22 when the fan 3 malfunctions or stops. The flapper 321 is connected to a corner of the fan housing 21 by the way of, for example but not limited to, pivoting, locking, clipping or wedging.

[0029]The flapper 321 can be also connected to the nearby fixing aperture 316 at the four corners of the fan housing 21. The fan housing 21 further comprises a cylindrical portion 213 and an outwardly expanding porti...

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PUM

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Abstract

A fan includes a motor base, a motor, an impeller, and a fan housing. The fan housing accommodates the motor base, the impeller, and the motor, and includes at least one flapper disposed at the corner of the fan housing via a plurality of connecting elements for covering the opening of the fan housing to prevent the air backflow.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of U.S. application Ser. No. 11 / 907,363, filed on Oct. 11, 2007, and claims priority to Taiwan Application Serial Number 095147374, filed on Dec. 18, 2006, the disclosure of which is hereby incorporated by reference herein in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of Invention[0003]The invention relates to a fan and a fan housing thereof, and, in particular, to a fan and a fan housing having a flapper.[0004]2. Related Art[0005]The computer system has become more complex, so the fans used in the computer system have to provide more efficient heat-dissipating ability. If one of the fans malfunctions while the computer system is operating, a backflow through the fan occurs since the interior of the computer system has negative pressure. The backflow will affect the airflow in the computer system and thus decrease the heat-dissipating ability of the fans. The prior art provides severa...

Claims

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Application Information

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IPC IPC(8): F04D29/56
CPCF04D29/526F04D25/14
Inventor LEE, CHIEN-MINGCHEN, YING-CHI
Owner DELTA ELECTRONICS INC
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