Cleaning device

Abstract

A cleaning device may include a body unit movable along one plane, a first suction unit extending in a first direction and arranged under the body unit, and through which waste is suctionable, a second suction unit extending in the first direction and arranged under the body unit, and through which waste is suctionable, a partition unit extending in the first direction and arranged between the first suction unit and the second suction unit, a roller unit arranged in the first suction unit, extending in the first direction, and arranged to be rotatable around one axis extending in the first direction, a brush extending by a first length from an outer circumferential surface of the roller unit, and a driving unit generating power such that the roller unit rotates around the one axis.

1 . A cleaning device comprising:
 a body unit movable along one plane;   a first suction unit extending in a first direction and arranged under the body unit, and through which waste is suctionable;   a second suction unit extending in the first direction and arranged under the body unit, and through which waste is suctionable;   a partition unit extending in the first direction and arranged between the first suction unit and the second suction unit;   a roller unit arranged in the first suction unit, extending in the first direction, and arranged to be rotatable around one axis extending in the first direction;   a brush extending by a first length from an outer circumferential surface of the roller unit; and   a driving unit configured to generate power such that the roller unit rotates around the one axis,   wherein the outer circumferential surface of the roller unit and the partition unit are arranged to be spaced apart from each other by a first distance, and   the first length of the brush extends from the outer circumferential surface of the roller unit is greater than the first distance.   
     
     
         2 . The cleaning device of  claim 1 , wherein the partition unit is inclined at a first angle with respect to the one plane. 
     
     
         3 . The cleaning device of  claim 2 , wherein
 the first angle is about 15 degrees to about 75 degrees.   
     
     
         4 . The cleaning device of  claim 1 , wherein
 an end portion of the partition unit is arranged at a height of about 0.5 mm to about 3 mm above another end portion of the brush located at a lowest end portion in a direction toward the one plane.   
     
     
         5 . The cleaning device of  claim 1 , wherein
 a suction pressure of the first suction unit is greater than a suction pressure of the second suction unit.   
     
     
         6 . The cleaning device of  claim 1 , wherein a width of the second suction unit in a second direction perpendicular to the first direction is greater than the first distance between the outer circumferential surface of the roller unit and the partition unit. 
     
     
         7 . The cleaning device of  claim 1 , wherein the first distance between the outer circumferential surface of the roller unit and the partition unit is about 1 mm to about 5.2 mm. 
     
     
         8 . The cleaning device of  claim 1 , wherein
 a width of the second suction unit in a second direction perpendicular to the first direction is about 4 mm to about 20 mm.   
     
     
         9 . The cleaning device of  claim 1 , further comprising:
 a support frame in which the first suction unit, the second suction unit, and the partition unit are arranged and which is detachable from the body unit,   wherein the roller unit is arranged to be rotatable with respect to the support frame.   
     
     
         10 . The cleaning device of  claim 9 , wherein
 the support frame and the partition unit are integrally provided with each other.   
     
     
         11 . The cleaning device of  claim 9 , wherein
 the roller unit is arranged to be detachable from the support frame.   
     
     
         12 . The cleaning device of  claim 11 , further comprising:
 a bearing unit respectively arranged at both end portions of the one axis so as to support rotation of the roller unit about the one axis.   
     
     
         13 . The cleaning device of  claim 1 , wherein
 a cross-section of the roller unit in a second direction perpendicular to the first direction is circular shape,   a radius of the circular shape is about 6 mm to about 18 mm, and   a length of the brush extending in a radial direction from the outer circumference surface of the roller unit is about 2.9 mm to about 8.7 mm.   
     
     
         14 . The cleaning device of  claim 1 , wherein
 the roller unit rotates around the one axis at a speed of about 500 revolutions per minute (rpm) to about 1,500 rpm.   
     
     
         15 . The cleaning device of  claim 1 , further comprising:
 a sensor unit configured to sense a rotation speed of the roller unit; and   a controller configured to control an operation of the driving unit by receiving the rotation speed of the roller unit from the sensor unit.