Vacuum cleaner

Abstract

An object of the present invention is to provide a dust collecting device in a vacuum cleaner replacement of which dust collecting filter is easy. To achieve this, the present invention provides a vacuum cleaner including a cleaner body having a body suction opening, and a fan-motor assembly for forced circulation of air introduced through the body suction opening, a dust collecting device in communication with the body suction opening, the dust collecting device having a main cyclone unit for separating foreign matters from the air introduced thereto by a cyclone principle, and at least one supplementary cyclone unit around the main cyclone for separating foreign matters from the air discharged from the main cyclone unit, a suction unit having an air suction opening in communication with the body suction opening, for drawing external air through the air suction opening, and a filter assembly having a dust collecting filter in a flow passage through which the air from the supplementary cyclone unit flows for separating the foreign matters from the air, and a filter housing in the dust collecting device for housing the dust collecting filter therein and drawing out of the dust collecting device assembly in a sliding fashion, thereby permitting easy mounting/dismounting of the dust collecting filter on/off the dust collecting device, enabling convenient washing or replacement of the dust collecting filter.

1 . A vacuum cleaner comprising: 
 a cleaner body having a body suction opening, and a fan-motor assembly for forced circulation of air introduced through the body suction opening;    a dust collecting device in communication with the body suction opening, the dust collecting device having a main cyclone unit for separating foreign matters from the air introduced thereto by a cyclone principle, and at least one supplementary cyclone unit around the main cyclone for separating foreign matters from the air discharged from the main cyclone unit;    a suction unit having an air suction opening in communication with the body suction opening, for drawing external air through the air suction opening; and    a filter assembly having a dust collecting filter in a flow passage through which the air from the supplementary cyclone unit flows for separating the foreign matters from the air, and a filter housing in the dust collecting device for housing the dust collecting filter therein and drawing out of the dust collecting device in a sliding fashion.    
   
   
       2 . The vacuum cleaner as claimed in  claim 1 , further comprising a filter mounting portion at a portion the filter housing is to be mounted thereto, having an opening for mounting the filter housing.  
   
   
       3 . The vacuum cleaner as claimed in  claim 2 , wherein the filter assembly further includes a sealing member at a portion the filter housing is secured to the filter mounting portion for preventing the air from leaking to an outside of the filter assembly.  
   
   
       4 . The vacuum cleaner as claimed in  claim 1 , wherein the filter housing includes a mesh for maintaining a received state of the dust collecting filter against an air flow.  
   
   
       5 . The vacuum cleaner as claimed in  claim 4 , wherein the mesh is at at least one of an upper and a lower portion of the filter housing.  
   
   
       6 . The vacuum cleaner as claimed in  claim 4 , wherein the filter housing includes a holding member for holding the dust collecting filter.  
   
   
       7 . The vacuum cleaner as claimed in  claim 1 , wherein the filter assembly further includes a handle on a front of the filter housing.  
   
   
       8 . A vacuum cleaner comprising: 
 a cleaner body having a body suction opening, and a fan-motor assembly for forced circulation of air introduced through the body suction opening;    a dust collecting device in communication with the body suction opening, the dust collecting device having a main cyclone unit for separating foreign matters from the air introduced thereto by a cyclone principle, and at least one supplementary cyclone unit around the main cyclone for separating foreign matters from the air discharged from the main cyclone unit;    a suction unit having an air suction opening in communication with the body suction opening, for drawing external air through the air suction opening; and    a filter assembly having a dust collecting filter in a flow passage through which the air from the supplementary cyclone unit flows for separating the foreign matters from the air, and a filter housing in the cleaner body for housing the dust collecting filter therein and drawing out of the cleaner body in a sliding fashion.    
   
   
       9 . The vacuum cleaner as claimed in  claim 8 , further comprising a filter mounting portion at a portion the filter housing is to be mounted thereto, having an opening for mounting the filter housing.  
   
   
       10 . The vacuum cleaner as claimed in  claim 9 , wherein the filter assembly further includes a sealing member at a portion the filter housing is secured to the filter mounting portion for preventing the air from leaking to an outside of the filter assembly.  
   
   
       11 . The vacuum cleaner as claimed in  claim 8 , wherein the filter housing includes a mesh for maintaining a received state of the dust collecting filter against an air flow.  
   
   
       12 . The vacuum cleaner as claimed in  claim 11 , wherein the mesh is at at least one of an upper and a lower portion of the filter housing.  
   
   
       13 . The vacuum cleaner as claimed in  claim 11 , wherein the filter housing includes a holding member for holding the dust collecting filter.  
   
   
       14 . The vacuum cleaner as claimed in  claim 8 , wherein the filter assembly further includes a handle on a front of the filter housing.