Cleaner

Abstract

A cleaner includes a case having an internal path formed therein and an intake motor to draw in air containing foreign substances into the case. The cleaner includes a dust collector on the internal path of the case through which the drawn air flows and rotatable to separate the foreign substances from the drawn air by rotating the drawn air, and a rotation body disposed further downstream than the dust collector in an airflow direction of the drawn air, to rotate by the air passing through the dust collector, and to rotate the dust collector by being combined with the dust collector.

What is claimed is: 
     
         1 . A cleaner comprising:
 a case having an internal path formed therein;   an intake motor to draw in air containing foreign substances into the case;   a dust collector disposed on the internal path through which the drawn air flows and rotatable to separate the foreign substances from the drawn air by rotating the drawn air; and   a rotation body disposed further downstream than the dust collector in an airflow direction of the drawn air, to rotate by the air passing through the dust collector, and to rotate the dust collector by being combined with the dust collector.   
     
     
         2 . The cleaner according to  claim 1 , wherein
 the rotation body comprises:
 a rotor to extend in a direction parallel to a direction in which the air passing through the dust collector flows; and 
   blades arranged along an outer circumference of the rotor to rotate the rotor by the air passed through the dust collector, and   the dust collector is coupled to the rotor to be rotated by the rotation of the rotor.   
     
     
         3 . The cleaner according to  claim 2 , wherein
 the rotor comprises:
 a rotor body to be inserted into the dust collector; and 
 a rotor head formed at one end of the rotor body to be outside the dust collector, 
   the blades arranged along an outer circumference of the rotor head,   the dust collector comprises a first coupler formed on an inner circumferential surface of the dust collector, and   the rotor body comprises a second coupler formed on an outer circumferential surface of the rotor body to be coupled to the first coupling part.   
     
     
         4 . The cleaner according to  claim 3 , wherein
 the first coupler comprises a protruding part formed to protrude from the inner circumferential surface toward the inside of the dust collector, and   the second coupler comprises a groove part into which the protruding part is inserted.   
     
     
         5 . The cleaner according to  claim 1 , wherein
 the rotation body is detachably combined with the dust collector.   
     
     
         6 . The cleaner according to  claim 2 , wherein
 the blades comprise:
 a first blade on the outer circumference of the rotor; and 
 a second blade on an opposite side of the first blade with respect to the rotor, 
   the dust collector comprises a dust collector body having a cylindrical shape, and   a length from one end of the first blade to one end of the second blade is to be smaller than a diameter of the dust collector body.   
     
     
         7 . The cleaner according to  claim 1 , wherein
 the case comprises:
 an outer case comprising an intake hole to allow the air to be drawn into the inside of the case; and 
 an inner case to be accommodated in the outer case to rotatably accommodate the dust collector and the rotation body. the inner case comprising an opening formed to allow the air drawn into the outer case to flow into the inner case. 
   
     
     
         8 . The cleaner according to  claim 7 , wherein
 the case further comprises a cover part to cover the opening of the inner case, the cover part comprising a plurality of holes to allow the air drawn into the outer case to pass into the inner case, and   the inner case comprises:
 a bypass hole formed to allow air not passing through the plurality of holes to be introduced into the inner case in response to the air not passing through the plurality of holes; and 
 a bypass door to be rotatable to open or close the bypass hole. 
   
     
     
         9 . The cleaner according to  claim 7 , wherein
 the case further comprises a scattering preventor coupled to a lower side of the inner case to prevent foreign substances accumulated inside the outer case from being introduced into the opening, and   the scattering preventor comprises:
 a scattering prevention body extending downward from the inner case; and 
 a scattering prevention rib extending spirally along a longitudinal direction of the scattering prevention body on an outer circumferential surface of the scattering prevention body and protruding toward an inner circumferential surface of the outer case. 
   
     
     
         10 . The cleaner according to  claim 7 , wherein
 the dust collector comprises:
 a dust collector body to separate the foreign substances from the air flowing into the inner case, 
 a dust collector rotation shaft extending downward from a lower surface of the dust collector body to be inserted into the inner case; 
 a dust collector bearing coupled to the dust collector rotation shaft to rotatably support the dust collector on the inner case; and 
 a first guard formed to be spaced outward from the dust collector rotation shaft and protruding downward to prevent the foreign substances from flowing into the dust collector bearing by covering the dust collector rotation shaft from the outside. 
   
     
     
         11 . The cleaner according to  claim 10 , wherein
 the inner case comprises a first rotation support to protrude upward to form a first insertion groove into which the dust collector bearing and the dust collector rotation shaft are inserted, and   the first rotation support to be inserted into a space formed by the dust collector rotation shaft and the first guard being spaced apart.   
     
     
         12 . The cleaner according to  claim 3 , wherein
 the case comprises an inner case to rotatably support the rotation body, and   the rotation body comprises:
 a rotor rotation shaft extending upward from the rotor head to be inserted into the inner case, 
 a rotor bearing coupled to the rotor rotation shaft to rotatably support the rotation body on the inner case; and 
 a second guard formed to be spaced outward from the rotor rotation shaft and protruding upward to prevent the foreign substances from flowing into the rotor bearing by covering the rotor rotation shaft from the outside. 
   
     
     
         13 . The cleaner according to  claim 12 , wherein
 the rotation body further comprises a third guard formed to be spaced outward from the second guard and protruding upward to cover the second guard from the outside, and   the inner case comprises a protruding rib formed to protrude downward and to be inserted into a space formed by the second guard and the third guard being spaced apart.   
     
     
         14 . The cleaner according to  claim 7 , wherein
 the inner case comprises a rotation guide to guide the air drawn into the outer case so that the air drawn into the outer case passed through the intake hole rotates in a first direction inside the outer case, and   the rotation body comprises:
 a rotor to extend in a direction parallel to a direction in which the air passing through the dust collector flows; and 
 blades inclined to have a negative inclination with respect to a tangential direction of the first direction to rotate the rotor in the first direction by the air passing through the dust collector and arranged along an outer circumference of the rotor. 
   
     
     
         15 . The cleaner according to  claim 14 , wherein
 the dust collector comprises:
 a dust collector body combined with the rotation body to rotate in the first direction; and 
   
       a dust collection rib protruding from an outer circumference of the dust collector body in a radial direction of the dust collector body and formed to be inclined toward a tangential direction in a direction opposite to the first direction. 
     
     
         16 . A cleaner comprising:
 an intake motor to generate an intake force; and   an impeller to be driven by the intake motor to generate an intake airflow drawing in air containing foreign substances;   a dust collector disposed on a path of the intake airflow and rotatable to rotate the drawn air to separate the foreign substances from the drawn air;   a rotation body disposed further downstream than the dust collector in a flow direction of the intake airflow, the rotation body including a rotor extending in a direction parallel to the air passed through the dust collector; and   blades to rotate the rotor by the air passing through the dust collector, to rotate the dust collector by being combined with the dust collector,   wherein the dust collector is detachably coupled to the rotor.