Dry vacuum cleaner with spot cleaning
View Patent ↗A vacuum cleaner has a cleaning powder distribution system and an actuator connected to the powder distribution system for selectively dispensing powder from the powder distribution system to soiled spots on a floor surface. In addition, a cleaning fluid distribution system is adapted to selectively distribute a liquid cleaning solution to the soiled spot. A propellant, in the form of an aerosol or compressed gas can be used to distribute the cleaning powder to the floor. A method of cleaning a spot on a surface comprises applying a selected volume of fluid cleaning solution to a selected area on the surface to be cleaned, applying a selected amount of cleaning powder to the selected area and extracting the applied cleaning solution and cleaning powder from the selected area on the surface to be cleaned.
1. A vacuum cleaner comprising:
a housing having a suction nozzle and that is adapted to move along a surface to be cleaned;
a cleaning powder distribution system associated with the housing and having a powder storage container that stores a powdered cleaning solution, a propellant that pressurizes the powdered cleaning solution, a distributor positioned at a location on the housing forwardly of the suction nozzle, a conduit between the powder storage container and the distributor, and a valve in the conduit to control the flow of the powdered cleaning solution from the powder storage container to the distributor, wherein the distributor is configured on the housing to propel the powdered cleaning solution to a target area on the surface to be cleaned adjacent to the housing when the valve is opened;
a recovery system adapted to remove soiled powdered cleaning solution from the surface and including the suction nozzle, a recovery tank, a suction source having a suction inlet fluidly connected to the recovery tank and the suction nozzle to draw soiled powdered cleaning solution through the suction nozzle and deposit the soiled cleaning solution in the recovery tank; and
an actuator coupled to the valve for selectively opening the valve to dispense the powdered cleaning solution from the distributor; and
wherein the cleaning powder distribution system is adapted to propel powdered cleaning solution to the selected target area adjacent the housing on the surface to be cleaned when the actuator opens the valve and the propellant comprises pressurized air that is exhausted from the suction source.
2. The vacuum cleaner of claim 1 , further comprising a liquid cleaning fluid distribution system associated with the housing and adapted to distribute a liquid cleaning solution to the target cleaning area of the surface to be cleaned; and the recovery system is configured to remove soiled liquid cleaning solution from the surface to be cleaned.
3. The vacuum cleaner of claim 1 , further comprising an agitator mounted to the housing for agitating the surface to be cleaned.
4. The vacuum cleaner of claim 3 wherein the agitator is a brush.
5. The vacuum cleaner of claim 1 , further comprising a target-illuminating device mounted to the housing to illuminate the target cleaning area on a surface forwardly of the housing.
6. The vacuum cleaner of claim 5 wherein the target-illuminating device is at least one of a laser light, a light emitting diode (LED), and an incandescent lamp.
7. The vacuum cleaner of claim 1 wherein the recovery tank includes a cyclonic air/dirt separator assembly and a dirt cup assembly.