Dust collecting filter for vacuum cleaner and vacuum cleaner having the same

Abstract

A dust collecting filter for an vacuum cleaner capable of being reused after being emptied and washed The dust collecting filter comprises a filter casing having a backside surface and a side surface vertically extended from an edge of the backside surface to thereby define a predetermined space therein, the backside surface having an air discharging hole formed therein to fluid-communicate with the air outlet, a cover having an air inflow hole fluid-communicating with the air inlet and separably connected with the filter casing, and a dust filtering means mounted in the filter casing, for filtering dust from the air that is drawn in through the air inflow hole and discharged through the air discharging hole. Accordingly, since the dust collecting filter can be reused after being emptied and washed, it is not required to replace the dust collecting filter. Also, since the filter is designed to prevent the propagation of the bacteria, it can keep the cleanliness of the environment. Also, easy separation and mounting of the filter improves the convenience in using the cleaner.

What is claimed is:  
     
         1 . A dust collecting fitter for a vacuum cleaner mounted in a dust collecting chamber of the vacuum cleaner having an air inlet and an air outlet, for filtering dust from air drawn in through the air inlet, the dust collecting filter being reusable, the dust collecting filter comprising: 
 a filter casing having a backside surface and a side surface vertically extended from an edge of the backside surface to thereby define a predetermined space therein, the backside surface having an air discharging hole formed therein to fluid-communicate with the air outlet;    a cover having an air inflow hole fluid-communicating with the air inlet and separably connected with the filter casing; and    a dust filtering means mounted in the filter casing, for filtering dust from the air that is drawn in through the air inflow hole and discharged through the air discharging hole.    
     
     
         2 . The dust collecting filter for the vacuum cleaner of  claim 2 , wherein the filter casing has a cylindrical shape and the filter casing and the cover are removably connected with each other by a projection portion and hooks respectively disposed at the fitter casing and the cover and corresponding to each other.  
     
     
         3 . The dust collecting fitter for the vacuum cleaner of  claim 1 , wherein the dust filtering means comprises: 
 a first dust-filtering member for filtering a big-sized dust; and    a second dust-filtering member for filtering a minute dust that is not filtered by the first dust filtering means.    
     
     
         4 . The dust collecting filter for the vacuum cleaner of  claim 3 , wherein the first dust-filtering member comprises: 
 a frame integrally formed with the backside surface of the filter casing to section an inner space of the fitter casing into an outer dust collecting portion and an inner air discharging portion, the frame having a plurality of holes being formed in a radial direction; and    a net body attached to a side of the frame to enclose the holes of the frame.    
     
     
         5 . The dust collecting filter for the vacuum cleaner of  claim 4 , wherein the second dust-filtering member comprises: 
 a first bracket contacting with the backside surface of the filter casing corresponding to the air discharging portion and having a passage hole formed in a center thereof to correspond to the air discharging hole;    a second bracket supported by an end of the frame at an edge thereof; and    a minute dust filter supported by circumference ends of the first and the second brackets.    
     
     
         6 . The dust collecting filter for the vacuum cleaner of  claim 5 , wherein the second bracket is formed in a conical shape that becomes gradually wider from a central point toward the other end, thereby allowing air drawn in through the air inflow hole of the cover to smoothly flow into the dust collecting portion disposed in the filter casing.  
     
     
         7 . The dust collecting filter for the vacuum cleaner of  claim 5 , wherein the minute dust filter is made of nonwoven fabric and the nonwoven fabric has a plurality of pleated portions to increase a dust filtering area.  
     
     
         8 . The dust collecting filter for the vacuum cleaner of  claim 5 , wherein the cover is provided with a plurality of ribs protruding from an inside of the cover, the ribs pressing the second bracket supported by the end of the frame as the cover is connected with the filter casing.  
     
     
         9 . A vacuum cleaner comprising: 
 a cleaner body having a dust collecting chamber provided with an air inlet and an air outlet and connected to a suction brush;    a vacuum-generating device disposed in a driving chamber, for generating a negative pressure in the dust collecting chamber, the driving chamber disposed in a rear portion of the dust collecting chamber of the cleaner body to fluid-communicate with the dust collecting chamber through the air outlet; and    a dust collecting filter mounted in the dust collecting chamber, for filtering and collecting dust collecting filter from air drawn into the dust collecting chamber, the dust- collecting fitter being reusable,    the dust collecting filter comprising, 
 a filter casing having a backside surface and a side surface vertically extended from an edge of the backside surface to thereby define a predetermined space therein, the backside surface having an air discharging hole formed therein to fluid-communicate with the air outlet;  
 a cover having an air inflow hole fluid-communicating with the air inlet and separably connected with the filter casing; and  
 a dust filtering means mounted in the filter casing, for filtering dust from the air that is drawn in through the air inflow hole and discharged through the air discharging hole.  
   
     
     
         10 . The vacuum cleaner of  claim 9 , wherein the filter casing has a cylindrical shape and the filter casing and the cover are removably connected with each other by a projection portion and hooks respectively disposed at the filter casing and the cover and corresponding to each other.  
     
     
         11 . The vacuum cleaner of  claim 9 , wherein the dust filtering means comprises: 
 a first dust-filtering member for filtering a big-sized dust filtering means; and    a second dust-filtering member for filtering a minute dust filtering means that is not filtered by the first dust filtering means.    
     
     
         12 . The vacuum cleaner of  claim 11 , wherein the first dust-filtering member comprises: 
 a frame integrally formed with the backside surface of the filter casing to section an inner space of the filter casing into an outer dust collecting portion and an inner air discharging portion, the frame having a plurality of holes being formed in a radial direction; and    a net body attached to a side of the frame to enclose the holes of the frame.    
     
     
         13 . The vacuum cleaner of  claim 12 , wherein the second dust-filtering member comprises: 
 a first bracket contacting with the backside surface of the filter casing corresponding to the air discharging portion and having a passage hole formed in a center thereof and corresponding to the air discharging hole;    a second bracket supported by an end of the frame at an edge thereof; and    a minute dust filter supported by circumference ends of the first and the second brackets.    
     
     
         14 . The vacuum cleaner of  claim 13 , wherein the second bracket is formed in a conical shape that becomes gradually wider from a central point toward the other end, thereby allowing air drawn in through the air inflow hole of the cover to smoothly flow into the dust collecting portion disposed in the filter casing.  
     
     
         15 . The vacuum cleaner of  claim 13 , wherein the minute dust filter is made of nonwoven fabric, and the nonwoven fabric has a plurality of pleated portions to increase a dust filtering area.  
     
     
         16 . The vacuum cleaner of  claim 13 , wherein the cover is provided with a plurality of ribs protruding from an inside of the cover, the ribs pressing the second bracket supported by the end of the frame as the cover is connected with the filter casing.