Abstract: Self-travelling vacuum cleaner (10) has body (20) having suction port (101), drive unit (30), and an electric fan. Since suction port (101) is disposed in a maximum width part of body (20) closer than drive unit (30), self-travelling vacuum cleaner (10) can suck a trash on a corner in a target region to be cleaned easily and can move from the corner to another area quickly.

Abstract: A vacuum cleaner includes a first dirt separation unit and a second dirt separation unit. The first dirt separation unit has a first inlet port through which a suction air stream including dirt particles is introduced thereinto, and the second dirt separation unit has a second inlet port through which the air stream introduced into the first dirt separation unit is introduced into the second dirt separation. The first and the second inlet port are disposed such that they are not registered with each other. Accordingly, the dirt particles suctioned are separated in two stages, thereby decreasing the possibility of occlusion of a filter and rapid deterioration of a suction force.

Abstract: A vacuum cleaner includes a first dirt separation unit and a second dirt separation unit. The first dirt separation unit has a first inlet port through which a suction air stream including dirt particles is introduced thereinto, and the second dirt separation unit has a second inlet port through which the air stream introduced into the first dirt separation unit is introduced into the second dirt separation. The first and the second inlet port are disposed such that they are not registered with each other. Accordingly, the dirt particles suctioned are separated in two stages, thereby decreasing the possibility of occlusion of a filter and rapid deterioration of a suction force.

Abstract: An electric cleaner provided with a main body comprised of a cleaner housing (20) equipped with wheels (27) for mobility on a floor surface. Both side surfaces of the main body extend outwardly beyond rim portions (35) of the respective wheels (27) that stay in contact with the floor surface, and a center of gravity G (40) of the main body is placed in such a position that the main body rolls toward a direction where the wheels (27) stand on the floor surface so as to return itself into an original posture when the main body tilts in a way that one of the side surfaces lies in contact to the floor.

Abstract: An electric cleaner provided with a main body comprised of a cleaner housing (20) equipped with wheels (27) for mobility on a floor surface. Both side surfaces of the main body extend outwardly beyond rim portions (35) of the respective wheels (27) that stay in contact with the floor surface, and a center of gravity G (40) of the main body is placed in such a position that the main body rolls toward a direction where the wheels (27) stand on the floor surface so as to return itself into an original posture when the main body tilts in a way that one of the side surfaces lies in contact to the floor.