Flow direction control mechanism

Abstract

A flow direction control mechanism is provided, which includes at least a rotatable means provided in a passage of an electronic system or apparatus. The rotatable means moves to an open position by means of a force generated from fluids flowing through the passage and returns to a close position in the absence of the force. Further, a restrictor is disposed adjacent to the rotatable means for restricting movement of the rotatable means between the open position and the close position.

1 - 24 . (canceled)  
   
   
       25 . A flow direction control mechanism, comprising at least one rotatable means provided in a passage of an electronic device in which the rotatable means moves to an open position by means of a force generated from airflow flowing through the passage in operation of a heat dissipating device in the electronic device, and the rotatable means returns to a close position to prevent reverse flowing of the airflow into the passage with occurrence of a breakdown of the heat dissipating device, 
 wherein the rotatable means is rotatably mounted in a pivotal, coaxial or engaging manner or as a module in the passage of the electronic device.    
   
   
       26 . A flow direction control mechanism, comprising: 
 a rotatable means mounted in a passage of an electronic device, wherein the rotatable means moves to an open position by means of a force generated from    airflow flowing through the passage in operation of a heat dissipating device in the    electronic device, and the rotatable means returns to a close position in the absence of    the force; and    a restricting means mounted close to the rotatable means for restricting    movement of the rotatable means between the open position and the close position.    
   
   
       27 . The flow direction control mechanism of  claim 26 , wherein the rotatable means is a thin plate pivotally mounted in the passage of the electronic device.  
   
   
       28 . The flow direction control mechanism of  claim 26 , further comprising a bias means mounted close to the rotatable means, allowing the rotatable means to return to the close position via biasing effect from the bias means,  
   
   
       29 . The flow direction control mechanism of  claim 26 , wherein the flow direction control mechanism is formed in a module type and capable of being detachably installed on at least one predetermined position in the passage of the electronic device.  
   
   
       30 . The flow direction control mechanism of  claim 26 , wherein the flow direction control mechanism is mounted in the passage near an air inlet or air outlet of the passage.  
   
   
       31 . The flow direction control mechanism of  claim 26 , wherein the flow direction control mechanism is mounted outside the heat dissipating device near an air inlet or air outlet of the heat dissipating device.  
   
   
       32 . The flow direction control mechanism of  claim 26 , wherein the rotatable means is made of alight material selected from the group consisting of Mylar, polyester, acrylic plastic, fiber glass, resin, metal, and polycarbonate.  
   
   
       33 . The flow direction control mechanism of  claim 26 , wherein the rotatable means is rotatably mounted in a pivotal, coaxial or engaging manner or as a module in the passage of the electronic device.  
   
   
       34 . The flow direction control mechanism of  claim 26 , wherein the restricting means is selected from the group consisting of a grid, guide, gate, protrusion, frame, block, shaft, and bolt, to be mounted an a side wall, bottom wall or top wall of the passage of the electronic device.  
   
   
       35 . A flow direction control mechanism, comprising: 
 a rotatable means mounted in a passage of an electronic device, wherein the rotatable means moves to an open position by means of a force generated from    airflow flowing through the passage in operation of a heat dissipating device in the    electronic device, and the rotatable means returns to a close position without the    operation of the heat dissipating device; and    a restricting means mounted close to the rotatable means for restricting movement of the rotatable means between the open position and the close position.    
   
   
       36 . The flow direction control mechanism of  claim 35 , further comprising a bias means mounted close to the rotatable means, allowing the rotatable means to return to the close position via biasing effect from the bias means.  
   
   
       37 . The flow direction control mechanism of  claim 35 , wherein the flow direction control mechanism is formed in a module type and capable of being detachably 
 installed on at least one predetermined position in the passage of the electronic device.    
   
   
       38 . The flow direction control mechanism of  claim 35 , wherein the flow direction control mechanism is mounted in the passage near an air inlet or air outlet of the passage.  
   
   
       39 . The flow direction control mechanism of  claim 35 , wherein the flow direction control mechanism is mounted outside the heat dissipating device near an air inlet or air outlet of the heat dissipating device.  
   
   
       40 . The flow direction control mechanism of  claim 35 , wherein the rotatable means is made of alight material selected from the group consisting of Mylar, polyester, acrylic plastic, fiber glass, resin, metal, and polycarbonate.