Vacuum cleaner

Abstract

The present invention discloses a vacuum cleaner which can improve the cleaning performance by filtering off impurities from the sucked air twice according to a cyclone method, and allow the user to easily discharge the collected impurities. The vacuum cleaner includes a primary cyclone unit ( 100 ), a secondary cyclone unit ( 120 ), and a passage partition unit ( 131 ) formed between the primary cyclone unit and the secondary cyclone unit. The sucked air is primarily filtered in the primary cyclone unit ( 110 ), and secondarily filtered in the secondary cyclone unit ( 120 ), thereby improving the cleaning performance. In addition, a dust container ( 140 ) is detachably coupled to the primary cyclone unit ( 110 ) or the secondary cyclone unit ( 120 ). Therefore, the user can easily remove the impurities collected in the dust container ( 140 ) by separating the dust container ( 140 ) from the primary and secondary cyclone units.

1 - 31 . (canceled) 
   
   
       32 . A vacuum cleaner, comprising:
 a primary cyclone unit for primarily separating impurities from the sucked air by primary cyclone flow;   a secondary cyclone unit for secondarily separating impurities from the air passing through the primary cyclone unit by secondary cyclone flow inside a plurality of secondary cyclones, and collecting the impurities at the center portion of the primary cyclone unit; and   a first passage partition unit for guiding the flow of the primary cyclone unit to inlets of the secondary cyclones, respectively.   
   
   
       33 . The vacuum cleaner of  claim 32 , wherein the secondary cyclones are formed in an inclined conical shape with outlets and dust discharge holes at both axial direction ends, the surfaces of which contacting the first passage partition unit being horizontal. 
   
   
       34 . The vacuum cleaner of  claim 32 , comprising eddy current prevention units for partitioning the outlets of the secondary cyclones in order to prevent an eddy current of the air discharged through the outlets of the secondary cyclones. 
   
   
       35 . The vacuum cleaner of  claim 34 , wherein the eddy current prevention units are partition walls installed to cross the outlets of the secondary cyclones. 
   
   
       36 . The vacuum cleaner of  claim 34 , wherein the eddy current prevention units are cylindrical members installed on the outlets of the secondary cyclones in the axial direction. 
   
   
       37 . The vacuum cleaner of  claim 32 , wherein the first passage partition unit seals up the gap between the inlet of the primary cyclone unit and the outlets of the secondary cyclones, and partially covers the outside surfaces of the secondary cyclones. 
   
   
       38 . The vacuum cleaner of  claim 32 , further comprising a mesh unit upwardly isolated from the inside bottom surface of the primary cyclone unit at a predetermined interval. 
   
   
       39 . The vacuum cleaner of  claim 32 , wherein the first passage partition unit further comprises a region with a plurality of through holes. 
   
   
       40 . The vacuum cleaner of  claim 37 , wherein the inlets of the secondary cyclones are adjacent to the outside surfaces of the secondary cyclones covered by the first passage partition unit. 
   
   
       41 . The vacuum cleaner of  claim 32 , wherein the inlets of the secondary cyclones are opened in the same direction. 
   
   
       42 . The vacuum cleaner of  claim 32 , further comprising a second passage partition unit for isolating the inside flow of the primary cyclone unit from passages from the outlets of the secondary cyclones. 
   
   
       43 . The vacuum cleaner of  claim 42 , wherein the second passage partition unit seals up the spaces between the secondary cyclones in order to increase the sectional area of the passages from the outlets of the secondary cyclones. 
   
   
       44 . The vacuum cleaner of  claim 32 , wherein the secondary cyclones are formed inside the inlet of the primary cyclone unit. 
   
   
       45 . The vacuum cleaner of  claim 44 , wherein the first passage partition unit isolates the outlets of the secondary cyclones from the inlet of the primary cyclone unit, and has its section downwardly inclined toward the center portion. 
   
   
       46 . The vacuum cleaner of  claim 32 , wherein the primary cyclone unit comprises a primary dust container for collecting impurities, the secondary cyclone unit comprises a secondary dust container installed at the center portion of the primary dust container to communicate with the outlets of the secondary cyclones, and the first passage partition unit is integrally formed with the secondary dust container. 
   
   
       47 . The vacuum cleaner of  claim 32 , further comprising a dust container detachably coupled to at least one of the primary cyclone unit and the secondary cyclone unit, for collecting the impurities separated in the primary cyclone unit or the secondary cyclone unit. 
   
   
       48 . The vacuum cleaner of  claim 47 , wherein the dust container comprises a primary dust container for collecting the impurities from the primary cyclone unit, and a secondary dust container formed in the primary dust container, for collecting the impurities from the secondary cyclone unit. 
   
   
       49 . The vacuum cleaner of  claim 47 , further comprising a sealing member installed between at least one of the primary cyclone unit and the secondary cyclone unit and the dust container. 
   
   
       50 . The vacuum cleaner of  claim 47 , wherein a handle unit is formed at the outer portion of the dust container, and the dust container is downwardly separated from the primary cyclone unit or the secondary cyclone unit by using the handle unit. 
   
   
       51 . The vacuum cleaner of  claim 47 , further comprising a dust separation plate installed between the primary cyclone unit and the dust container. 
   
   
       52 . The vacuum cleaner of  claim 51 , wherein the dust separation plate comprises at least one opening unit for passing dust. 
   
   
       53 . The vacuum cleaner of  claim 51 , wherein the dust separation plate is detachably coupled to the dust container. 
   
   
       54 . The vacuum cleaner of  claim 51 , wherein the dust separation plate is detachably coupled to the primary cyclone unit or the secondary cyclone unit. 
   
   
       55 . A vacuum cleaner, comprising:
 a primary cyclone unit for primarily separating and collecting impurities from the sucked air by primary cyclone flow;   a secondary cyclone unit for secondarily separating and collecting impurities from the air passing through the primary cyclone unit by secondary cyclone flow; and   a dust container detachably coupled to at least one of the primary and secondary cyclone units, for collecting the impurities separated in the primary and secondary cyclone units.   
   
   
       56 . The vacuum cleaner of  claim 55 , wherein the dust container comprises a primary dust container for collecting the impurities from the primary cyclone unit, and a secondary dust container formed in the primary dust container, for collecting the impurities from the secondary cyclone unit. 
   
   
       57 . The vacuum cleaner of  claim 55 , further comprising a sealing member installed between at least one of the primary cyclone unit and the secondary cyclone unit and the dust container. 
   
   
       58 . The vacuum cleaner of  claim 55 , wherein a handle unit is formed at the outer portion of the dust container, and the dust container is downwardly separated from the primary cyclone unit or the secondary cyclone unit by using the handle unit. 
   
   
       59 . The vacuum cleaner of  claim 55 , further comprising a dust separation plate installed between the primary cyclone unit and the dust container. 
   
   
       60 . The vacuum cleaner of  claim 59 , wherein the dust separation plate comprises at least one opening unit for passing dust. 
   
   
       61 . The vacuum cleaner of  claim 59 , wherein the dust separation plate is detachably coupled to the dust container. 
   
   
       62 . The vacuum cleaner of  claim 59 , wherein the dust separation plate is detachably coupled to the primary cyclone unit or the secondary cyclone unit.