Vacuum cleaner

Abstract

A vacuum cleaner capable of attenuating noise of an air discharge port, including a cleaner body having a motor driving chamber with an air inlet and an air outlet, a motor disposed in the motor driving chamber for drawing in air from the air inlet and exhausting the air into the motor driving chamber, and a motor housing disposed in the cleaner body to cover the motor and defining the motor driving chamber, the motor having air guide ribs for preventing the air exhausted from the motor from directly flowing to the air outlet. The first and second ribs are arranged and oriented to cooperate with each other and so to provide a baffle to the air flow within motor driving chamber

1 . A vacuum cleaner capable of attenuating noise from an air discharge port, comprising: 
 a cleaner body having a motor driving chamber, the motor driving chamber including an air inlet and an air outlet;    a motor disposed in the motor driving chamber for drawing in air through the air inlet and exhausting the air into the motor driving chamber; and    a motor housing disposed in the cleaner body to cover the motor and defining the motor driving chamber, the motor housing having air guide ribs for preventing the air exhausted from the motor from directly flowing to the air outlet.    
   
   
       2 . The vacuum cleaner of  claim 1 , wherein the motor driving chamber is further defined by the engagement of a lower housing having the air inlet and the air outlet and being integrally formed with the cleaner body, and the motor housing engaged to cover an open upper part of the lower housing.  
   
   
       3 . The vacuum cleaner of  claim 2 , wherein the air is exhausted from the motor toward the motor housing, and the air guide ribs comprise: 
 at least one first rib for changing direction of the exhaust air flow from the motor to flow in a first direction; and    at least one second rib for preventing the air flowing in the first direction from mixing with air flowing in a second direction, opposed to the first direction, thereby to extend the air flow path.    
   
   
       4 . The vacuum cleaner of  claim 3 , wherein the first ribs are formed extending downwardly from the motor housing into the motor driving chamber, opposite to each other and separated by a predetermined interval.  
   
   
       5 . The vacuum cleaner of  claim 4 , wherein a pair of second ribs is formed extending downwardly from the motor housing into the motor driving chamber in a parallel relationship to each other, and extending substantially perpendicular to the first ribs.  
   
   
       6 . The vacuum cleaner of  claim 4 , wherein a partition rib is formed projecting upwardly from the lower housing of the motor driving chamber in a corresponding location so as to engage the first rib so that the motor does not directly face the air outlet.  
   
   
       7 . The vacuum cleaner of  claim 4 , wherein a pair of the second ribs is formed to extend from the motor housing to the bottom of the lower housing in a parallel relationship.  
   
   
       8 . The vacuum cleaner of  claim 3 , wherein the ribs are arranged and oriented to cooperate with each other and so to provide a baffle to the air flow within motor driving chamber.