摘要:
A portable, compact and self-contained continuous flow recycling system includes a housing to accommodate a vacuum motor and liquid pump for recirculating a liquid cleaning solution and air. A pair of wheels supports the housing for tilting about a wheel axle. A pair of support arms are mounted to rotate on the axle, and their opposite ends are fixed to the shell of a cleaning head. The head is shaped to define a first compartment for receiving atomized cleaning solution and air, and a second compartment. A vacuum source draws the solution and air from the first chamber, across a partition near the floor, into the second compartment. The head is free to travel in an arcuate path relative to the housing, with its orientation determined by the arms, to insure a desired coplanarity with the floor or other surface being cleaned, when the head is in its operating position. A latching mechanism can secure the cleaning head in an upright position, away from the floor, sufficiently to accommodate a tilting of the housing to an upright position in which a bottom of the housing (rather than the wheels) supports the device. A pair of pivot links, associated with each arm, limits pivoting of the arm beyond a certain location below the operating position. The pivot arms, in cooperation with a glide formed as part of the shell, precisely position and orient the cleaning head for maximum efficiency.
摘要:
The liquid filter assembly including a filter housing with an inlet below a prescribed external liquid level and having a generally cylindrical filter unit inside it with reusable filter elements which effectively operate at low pressure drops and permitting bypass liquid to recirculate within the filtered section without passing through the filter element and providing a filter support frame having the filter element supported thereon to provide a changeable filter assembly unit sealingly mounted within the housing.
摘要:
An aqueous surface cleaning composition consists essentially of water and a surfactant. The surfactant is incorporated, preferably, at a concentration of 10-100 parts per million, by weight as a proportion of the entire composition, and more preferably is within the range of about 70-93 ppm. The preferred surfactant is sodium octyl sulfate, which is resistant to combining or interacting with ozone and has the desired foaming characteristics. Other ozone resistant surfactants may be employed, alone or in combination with one another. The liquid cleaning composition is used advantageously in a fluid cycling cleaning system or a recycling system in which the liquid is provided from a canister to a cleaning tool head, then returned over a vacuum conduit to the canister for filtration and reuse. Circulation of the cleaning composition through the system agitates the composition, enabling the surfactant to promote formation of a foam layer that covers an otherwise exposed surface of the cleaning composition, virtually preventing the outgasing of ozone. The cleaning composition can be enhanced through water conditioners, alkalinity enhancers and other additives with little or no ozone demand. The cleaning composition is conveniently prepared by making a liquid concentrate incorporating the surfactant at 0.9-1.2 percent, then diluting the concentrate with water. Surfaces are cleaned by incorporating ozone into the liquid cleaning composition, delivering the ozone-containing composition to an application area, and using a vacuum to draw the cleaning composition, air, and removed soil away from the application area.
摘要:
An adapter plate, removably mounted with respect to the cleaning tool head of a continuous flow recycling cleaning device, supports a fluid flow barrier. The barrier is formed of multiple resilient filaments parallel to one another and packed closely together to resist air passage through the barrier. The filaments are supported in cantilevered fashion, and are individually and locally deformable as the tool head is placed in an operating position near a floor or other surface to be cleaned. The barrier thus conforms to the topography of the surface being cleaned, to achieve a better seal. The barrier is used in combination with a more porous layer, e.g., a carpet tile or a less tightly packed filament arrangement, to channel air from outside of the tool head into an intake compartment while blocking passage to an exhaust compartment inside the tool head.
摘要:
The invention provides a cushioning control circuit which restricts the initial flow of current to a D.C. permanent magnet motor by providing a neon control lamp in series with a pair of triac control circuits which drops the initial voltage imposed on the motor windings.
摘要:
A continuous flow recycling surface cleaning device includes a cleaning tool head incorporating a nozzle arrangement to enhance surface cleaning and drying. The head includes a shell that engages a surface being cleaned to form an enclosed chamber. A partition divides the chamber into intake and evacuation compartments. A row of nozzles is mounted to the shell to spray liquid cleaning solution into the intake compartment. Air enters the receiving sector through slots near the nozzles and between a forward portion of the shell and the floor, and is drawn beyond the partition into the evacuation compartment by a vacuum source. Each of the nozzles generates a sheet-like, fan-shaped spray pattern. The nozzles are arranged to form adjacent spray patterns that overlap one another longitudinally (lengthwise of the elongate shell) but are separated from one another to avoid interference between adjacent spray patterns. In one particularly advantageous arrangement, the nozzles are angularly offset from the lengthwise direction to form parallel spray patterns that define air passages between them. The shell, particularly along and adjacent the surface being cleaned, is configured to promote air flow into the intake compartment while resisting air passage into the evacuation compartment.
摘要:
A back flush filter system for a cleaning apparatus which includes a hollow filter member with a flow diffusing member inserted therein to cause the flow through the filter to be diffused into a substantially circumferential uniform flow passage through the entire area of the screen in both the filtering mode and the back flow mode of operation and including an atmospheric air vent to permit air entrapped within liquid flow system to escape and thus maintain a substantially air free liquid flow system.
摘要:
A continuous flow recycling cleaning system includes a canister containing a liquid cleaning solution, and a dispensing conduit for conveying the cleaning solution from the canister to a cleaning tool head for direct application to a carpet, upholstery fabric or other material at an application area. A recovery conduit is connected to the cleaning tool head for returning recovered cleaning solution, along with air and extracted soil, to the canister. The system includes at least one ozone injector selectively positioned along a fluid flow pathway that includes the canister, the dispensing and recovery conduits, and the cleaning tool head. The fluid flow pathway further can include a counterflow conduit and an ozone-introduction conduit provided solely for the injection of ozone. Each injector is coupled to an ozone generator, to combine the ozone with the cleaning solution flowing through the injector. A portion of the ozone is dissolved in the liquid cleaning solution for cleaning, sanitizing and deodorizing the application area and interior surfaces along the fluid flow pathway. A surfactant is incorporated into the cleaning solution to improve the retention of dissolved ozone. A portion of the ozone remaining in the gaseous state sanitizes and deodorizes air within the system. The system includes an air exhaust, which can incorporate a filter for reducing ozone concentrations in the expelled air.
摘要:
A liquid recycling and filtering system is well suited for use in continuous flow recycling surface cleaning devices. The system employs a canister containing a liquid cleaning solution, and a cylindrical filter submerged in the liquid and defining a chamber containing a portion of the liquid. A liquid supply conduit withdraws liquid from the chamber and supplies the liquid to a cleaning tool head, where the liquid is sprayed upon a floor or other surface being cleaned. A counterflow conduit is coupled to the liquid supply conduit and to the chamber, for transporting liquid under pressure to a spraying assembly within the chamber. The spraying assembly includes a rotatable manifold and nozzles at opposite ends of the manifold. The nozzles spray the liquid in planar, fan-shaped patterns that impinge upon the filter over limited surface areas. Due to nozzle orientation, the sprays include tangential forces that cause the nozzles and manifold to rotate in the direction opposite to the forces, moving the sprays to cover the filter over sweep areas much larger than the initial impingement areas. A bypass valve along the counterflow conduit controls the liquid flow through that conduit and also determines the pressure of the liquid at the cleaning tool head. A vacuum line, open to the cleaning tool head and to the reservoir, is used to recover liquid and return recovered liquid and air to the reservoir at a location outside of the chamber.