An electric vacuum cleaning apparatus includes a station and an electric vacuum cleaner connectable/disconnectable from the station. The electric vacuum cleaner includes: a coarse-dust collecting chamber that accumulates coarse dust separated with a first separator; a filter chamber that accumulates fine dust separated with a filter; a coarse-dust waste-outlet that discharges the coarse dust from the coarse-dust collecting chamber; a fine-dust waste-outlet adjacent to the coarse-dust waste-outlet and discharges the fine dust from the filter chamber; and a waste-outlet lid that opens/closes both the coarse-dust waste-outlet and fine-dust waste-outlet together. The station includes: a secondary dust container accumulating coarse dust to be discharged from a primary dust container through the coarse-dust waste-outlet port and fine dust to be discharged from the primary dust container through the fine-dust waste-outlet; and a secondary electromotive blower that applies negative pressure to the primary dust container to transfer the coarse and fine dust.

A fan with airfoil blades is provided for a regenerative air vacuum street sweeper. The blades are formed using cut and pressed upper and lower panels which are welded at a forward edge to a rod to form the airfoil leading edge and welded at the rear edges to form the airfoil trailing edge. Pins extend laterally outwardly from the rod for mounting each blade in corresponding holes in the front and rear plates of the fan housing. The side edges of the blade are welded to the plates at a 9-11° angle of attack. The airfoil blades allow for reduced size, horse power, noise, and manufacturing and shipping costs.

A vacuum collection vehicle may include a chassis, a vacuum container, a filter unit, a first discharge conduit and a second discharge conduit. The filter unit may include a filter housing that supports a filter independent of opposing interior walls. The vehicle may include a storage container supported by the chassis and containing a vacuum source or hose reel. The vehicle may include inner and outer collection receptacle supports for supporting collection receptacles within the vacuum container.

A filter system for a vacuum cleaner is disclosed. The system comprises a housing reconfigurable relative to a bin between an operative configuration in which the housing is disposed upon the bin so that dirt separated from dirt-laden air can collect in the bin, and an idle configuration in which the housing is removed from the bin. The housing comprises an inlet for receiving dirt-laden air into the housing, an outlet via which cleaned air can exit the housing. The system further comprises first filtering means and second filtering means disposed within the housing, the first filtering means being positioned upstream of the second filtering means. The first and second filtering means comprises a filter medium configured to separate dirt from the dirt-laden air passing from the inlet to the outlet through the filter medium. The system further comprises filter cleaning means for removing dirt from the filter medium of the first filtering means when the housing is configured at least in the operative configuration.

A cyclone unit capable of enhancing dust collection performance. A cyclone unit includes a cyclone unit body, a dust box and a core tube. The cyclone unit body includes a lower base, an upper base and a middle base sandwiched between the lower base and the upper base. The dust box is assembled to the cyclone unit body so as to collect dust and dirt. The core tube, having a meshed shape, is assembled to the middle base so as to be located inside the dust box. The core tube is detachable from the middle base while the upper base is assembled to the lower base.

A separating device that is connectable to a vacuuming device for separating dirt particles from an air stream drawn in by the vacuuming device, containing at least one separator. The at least one separator contains an inlet opening for the air stream and a first and second outlet opening, wherein the first outlet opening serves for the exit of drawn-in dirt particles from the separator and the second outlet opening serves for the exit of the drawn-in air stream and of the drawn-in dirt particles from the separator, and wherein a first and second collection vessel for collecting the dirt particles separated from the separator is contained, and wherein the first collection vessel is positioned in a direction beneath the first outlet opening and the second collection vessel is positioned in a direction beneath the second outlet opening.

A vacuum cleaner includes a foot assembly having a suction inlet thereon, a suction source in fluid communication with the suction inlet to produce a working airflow there through, and a dirt container in fluid communication with the suction inlet and suction source. The foot assembly further includes a body defined by a central portion and a pair of extension arms, a rotatable agitator on each extension arm, and a drive assembly configured to counter-rotate the agitators. The counter-rotating agitators are operable to cooperate with the suction source to direct dust and debris towards the suction inlet.

A fan with airfoil blades is provided for a regenerative air vacuum street sweeper. The blades are formed using cut and pressed upper and lower panels which are welded at a forward edge to a rod to form the airfoil leading edge and welded at the rear edges to form the airfoil trailing edge. Pins extend laterally outwardly from the rod for mounting each blade in corresponding holes in the front and rear plates of the fan housing. The side edges of the blade are welded to the plates at a 9-11 angle of attack. The airfoil blades allow for reduced size, horse power, noise, and manufacturing and shipping costs.

A vacuum cleaner includes a foot assembly having a suction inlet thereon, a suction source in fluid communication with the suction inlet to produce a working airflow there through, and a dirt container in fluid communication with the suction inlet and suction source. The foot assembly further comprises a body defined by a central portion and a pair of extension arms, a rotatable agitator on each extension arm, and a drive assembly configured to counter-rotate the agitators. The counter-rotating agitators are operable to cooperate with the suction source to direct dust and debris towards the suction inlet.

A cleaner is provided. The cleaner includes a transfer device, and a dust collecting apparatus connectable to the transfer device and configured to filter out rubbish transferred from the transfer device. The dust collecting apparatus includes a housing in which a first dust chamber is formed, and including a guide recessed inwardly from an outer surface, a handle configured to be movable on the outside of the housing and provided to cover at least a portion of the guide, a first rubbish removal member configured to be movable inside the housing based on the movement of the handle, and configured to discharge rubbish collected in the first dust chamber, and a link configured to connect the handle to the first rubbish removal member, and having a movement guided by the guide.